Carrier Air Conditioner ZONEKIT4ZCAR User Manual

ZONEKIT4ZCAR

Comfort Zone

Installation and Start-Up Instructions

NOTE: Read the entire instruction manual before starting the

installation.

TABLE OF CONTENTS

PAGE

Safety Consideration ......................................................................1

Installation Considerations..........................................................1-2

Introduction ....................................................................................2

Installation.................................................................................2-18

Check Equipment and Jobsite ..................................................2

Wiring........................................................................................2

Shielded Cable.....................................................................2

Install Comfort Zone Center ....................................................3

Install Zone Dampers ............................................................3-5

Round Metal Duct Work.....................................................4

Rectangular Metal Duct Work............................................4

Round Flexible Duct Work..............................................4-5

Rectangular Fibrous Glass Duct Work...............................5

Install Barometric Bypass Dampers.........................................5

Install Duct Temperature Sensor ..........................................5-6

Install Dx Coil Sensor ..............................................................6

Install Four Zone Controller.....................................................6

Install Remote Room Sensor or Smart Sensors ......................6

Comfort Zone System Wiring Diagram...................................7

Sequence Of Operation.............................................................6-12

Temperature Setpoints.........................................................6

Heating and Cooling Comfort Setpoints.....................6 & 8

Sequence of Events For a Normal Heating

2:45

COOL

HEAT

A93208

Fig. 1−Comfort Zone System

Hardware Failure Error Table......................................................21

Wiring Diagrams.....................................................................22-31

Configuration Table .....................................................................32

SAFETY CONSIDERATIONS

Improper installation, adjustment, alteration, service, maintenance,

or use can cause fire, electrical shock, or other conditions which

may cause personal injury or property damage. Consult a qualified

installer, service agency or your distributor or branch for informa-

tion or assistance. The qualified installer or agency must use

factory-authorized kits or accessories when modifying this prod-

uct. Refer to the individual instructions packaged with the kits or

accessories when installing.

or Cooling Cycle............................................................8

Selection of a Reference Zone In The System ..................8

Pre-positioning Dampers And Starting

The System Fan................................................................8-9

Controlling The Zone Dampers ..........................................9

Operating The Heating And Cooling Equipment...............9

Control Strategy For Heating/Cooling Stages...............9-10

Configuration Options For Equipment Operation............10

Relay Pack To HVAC Equipment Connections ..............10

Starting The HVAC Equipment ..................................10-11

Stage Control During Equipment Operation...............11-12

Configuring Four Zone Controller....................................12-13

Programmable Options Settings ..................................12-13

Programmable Options Toggles........................................13

Wiring Diagram Reference Tables.........................................13

Start Up..............................................................................13-14

Programming Schedules....................................................14-16

System Switches...........................................................14-15

Controller Display .............................................................15

Zone Selector Dial .......................................................15-16

Accessories ........................................................................16-17

Troubleshooting ......................................................................17

Care And Maintenance ................................................................17

Toggle Summary Table................................................................18

Operating Problem Table.............................................................19

Storage Failure Error Table.........................................................20

Follow all safety codes and wear safety glasses. Have fire

extinguisher available. Read these instructions thoroughly and

follow all warnings or cautions attached to the unit. Consult local

and state building codes and Sheet Metal and Air Conditioning

National Association (SMACNA) for special installation require-

ments.

Recognize safety information. This is the safety-alert symbol

When you see this symbol on the unit or in instructions and

manuals, be alert to the potential for personal injury.

Understand the signal words DANGER, WARNING, or CAU-

TION. These words are used with the safety-alert symbol. DAN-

GER identifies the most serious hazards which will result in severe

personal injury or death. WARNING signifies hazards which

could result in personal injury or death. CAUTION is used to

identify unsafe practices which would result in minor personal

injury or product and property damage.

INSTALLATION CONSIDERATIONS

1. Install in a non-condensing area with ambients between 32°F

and 120°F.

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Book

Tab 3a 5a 2a 5a

PC 101

Catalog No. 809-568

Printed in U.S.A.

Form ZONEKIT4-1SI

Pg 1

7-95

Replaces: 920415-3SI

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NOTE 2

PORT #1

PORT #2

PORT #1

PORT #2

ISOSAT-01

Comfort

Zone

I/O

Comfort

Zone

I/O

Comfort

Zone

I/O

Comfort

Zone

I/O

Comfort

Zone

I/O

Comfort

Zone

I/O

ISOSAT BUS

PORT #1

ISOSAT BUS

PORT #1

NOTE 1

NOTE 2

NOTE 1

NOTE 2

SHIELD DRAIN WIRE (TYP)

ISOSAT-01

PORT #2

DEVICE BUS (TYP)

SHIELD DRAIN WIRE (TYP)

PORT #1

SHIELD DRAIN WIRE (TYP)

PORT #1

ISOSAT-01

PORT #2

ISOSAT-01

PORT #2

NOTES:

1. Use butt splices, or solder,

for shield connections. Then

tape up shield.

NOTES:

1. Use butt splices, or solder,

for shield connections. Then

tape up shield.

2. Do not connect the shield

drain wire at the end of

Communication Bus. Cut

and tape up to avoid shorting.

PORT #1

2. Do not connect the shield

drain wire at the end of

Communication Bus. Cut

and tape up to avoid shorting.

ISOSAT-01

PORT #2

ISOSAT-01

PORT #2

BUILDING GROUND

TO PERSONAL COMPUTER OR MODEM

A93249

Fig. 3—Typical Communications Network

PORT #1

PORT #2

ISOSAT-02

Table 1—Wiring Requirements

FROM

COMFORT ZONE

CENTER TO

MAX.

LENGTH

(FT)

NO.

OF WIRES

GAGE

BUILDING GROUND

3‡

5‡

18/22

200/100

A93250

Four Zone Controller

Fig. 4—Communication Network With

An ISOSAT-02

Remote Room Sen-

sors

2‡

18/22

200/100

Remote Duct Sensors

Dx Coil Sensor

2‡

18/22

200/100

To prevent possible damage to Comfort Zone Center, do not

mount on plenum, duct work, or flush against furnace.

Home Access

Module

3‡

18/22

1000/100

ISOSAT*

3‡

18/22

1000/100

1. Separate Comfort Zone Center cover. (See Fig. 5)

Transformer†

2. Mount back plate of center cover to wall using screws and

wall anchors provided.

* When using ISOSATS in interfacing multiple buses together, the length of

wiring between ISOSATS cannot exceed 4000 ft with 18 gage.

† 24 vac, 50-75 va

3. Level back plate and tighten screws.

‡ Shielded cable recommended to reduce noise interference.

Step 4—Install Zone Dampers

Step 3—Install Comfort Zone Center

NOTE: The Comfort Zone System is approved for indoor use

only and should never be installed with any of its components

exposed to the elements. The enclosure must be installed with

center cover to help prevent damage from other sources. Do not

mount Comfort Zone Center where it will be accessible to

children. Do not locate center in areas of the home that are noise

sensitive since relays are energized and de-energized during

operation and may be an annoyance. Install Comfort Zone in an

area with a temperature range between 32°F and 120° F.

IMPORTANT: If conditions exist for possible condensing, motor

must be positioned for adequate draining. (See Fig. 6.)

NOTE: If a multi-damper enabler is used to link dampers

together, add 5va per damper to the transformer power supply

rating. Reference multi-damper enabler Installation Instructions.

Zone dampers may be installed in any direction.

Install dampers so that actuator is visible for inspection and

accessible in the event it would ever need to be serviced. The black

mark on the end of damper shaft represents the position of damper

blade.

Install Comfort Zone Center in either a vertical or horizontal

position. Locate in an area that is easily accessible in case

servicing should be required.

NOTE: Insulate damper using 1-1/2 in. insulation (check local

codes). In areas where excessive condensing may occur, carefully

insulate over the actuator assembly. Make sure insulation does not

interfere with operation of actuator.

NOTE: Four vent plugs and 2 bushings have been supplied. Snap

bushings in the 1-in. diameter holes that are to be used for wiring

and place plugs in remaining holes.

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COMFORT ZONE CENTER

BACK PLATE

INTERCHANGEABLE

HOLE PLUGS AND

BUSHINGS

POSITION

INDICATOR

MOUNTING

HUB

ANGULAR

ROTATION

STOPS

ACTUATOR

HOUSING

Comfort Zone

Center

QUICK BLADE

RELEASE

BUTTON

COMFORT ZONE

CENTER COVER

MOUNTING

BRACKET

(RED)

FIELD

INSTALLED

POWER WIRING

A93247

Fig. 5—Comfort Zone Center

A95096

Fig. 7—Damper 24-vac Connections

DAMPER

MOUNTING

BRACKET

SUPPLY

FLEX

ZONE DAMPER

CONNECTOR

A95129

Fig. 8—Round Metal Duct Work

¹/2 ″ STEEL STRAP

ACTUATOR

A95128

Fig. 6—Damper Motor Positioning

Before insulating the duct work, check for proper damper opera-

tion. Apply the 24vac between COM and OPN to open the damper

and COM and CLS to close the damper. (See Fig. 7.) The damper

will modulate counter-clockwise to open and clockwise to close.

A95130

Fig. 9—Insulated Round Metal Duct Work

If in an emergency it becomes necessary to force a damper open,

manually press in the red quick blade release button with one hand

and turn the mounting hub to reposition the damper shaft. Release

the button to hold the damper shaft in the new position.

NOTE: All zone dampers and duct work must be properly

supported according to local codes or SMACNA standards.

RECTANGULAR METAL DUCT WORK

1. Make connections using S-lock and drives. (See Fig. 10.)

To avoid noise and vibration, do not hard mount dampers to any

solid structure such as joists.

2. Properly seal joint using duct tape, mastic, or other approved

method. Do not allow mastic to come in contact with actuator.

ROUND METAL DUCT WORK

3. Insulate damper using 1-1/2-in. to 2-in. insulation. (Check

your local codes.)

IMPORTANT: If application exists with all metal duct work

without insulation, flex connectors must be used on each end of

zone dampers to avoid noise and vibration.

NOTE: All zone dampers and duct work must be properly

supported according to local codes or SMACNA standards.

1. Crimp end of branch duct.

NOTE: There should be a minimum of 4 ft between zone damper

and first branch duct if more than 1 branch duct is downstream of

zone damper.

2. Slip end of zone damper over end of duct work. Use

self-tapping sheet metal screw to secure. (See Fig. 8.)

3. Properly seal joint using duct tape, mastic, or other approved

method. Do not allow mastic to come in contact with actuator.

ROUND FLEXIBLE DUCT WORK

4. Insulate damper using 1-1/2-in. to 2-in. insulation. (Check

your local codes.)

1. Slip 1 end of flexible duct work over 1 end of zone damper.

(See Fig. 12.)

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¹/²″ STEEL STRAP

S-LOCK

SUPPLY

A95133

AIR DUCT

Fig. 13—Insulated Round Flexible Duct Work

DRIVE

ZONE

DAMPER

FIBROUS

GLASS

DUCTWORK

FIELD

SUPPLIED

SCREWS

A92478

ZONE

DAMPER

Fig. 10—Rectangular Metal Duct Work

1¹/2 " TO 2"

INSULATION

2″ TO 3″

A92480

Fig. 14—Rectangular Fibrous Glass Duct Work

1¹/2″ TO 2″

INSULATION

A95131

Fig. 11—Insulated Rectangular Metal Duct Work

A95134

Fig. 15—Insulated Rectangular Fibrous Glass Duct

Work

ZONE

DAMPER

FLEXIBLE

DUCT

Step 5—Install Barometric Bypass Damper

NOTE: The barometric bypass damper is a critical part of

Comfort Zone System for control of minimum airflow and noise

reduction. It is recommended that the bypass be installed.

The bypass should be installed according to local codes and

SMACNA standards. Be sure bypass is properly supported.

For proper installation, refer to Installation Instructions packaged

with barometric bypass.

A95132

Fig 12—Round Flexible Duct Work

2. Secure flexible duct to zone damper using SMACNA or other

approved method.

Failure to properly install bypass damper can cause perma-

nent damage to the HVAC equipment. For single speed

furnace applications bypass air must never exceed 25 percent.

3. Properly seal joint using duct tape, mastic, or other approved

method. Do not allow mastic to come in contact with actuator.

4. Insulate damper using 1-1/2-in. to 2-in. insulation. (Check

your local codes.)

Step 6—Install Duct Temperature Sensor

Locate duct temperature sensor in main supply trunk after heating

and cooling coil and before bypass damper and first branch. The

duct temperature sensor must be radiant shielded to prevent heat

from affecting correct air temperature.

NOTE: All zone dampers and duct work must be properly

supported according to local codes or SMACNA standards.

RECTANGULAR FIBROUS GLASS DUCT WORK

1. Insert 1 end of zone damper into 1 end of fibrous glass duct

work approximately 2- to 3-in. (See Fig. 14.)

1. Drill a 7/8-in. hole at location in unit where sensor will be

installed.

2. Screw field-supplied screws and tabs into zone damper.

2. Remove cover and insert sensor probe through 7/8-in. hole.

3. Properly seal joint using duct tape, mastic, or other approved

method. Do not allow mastic to come in contact with actuator.

3. Drill two 1/16-in. holes to accept No. 6 screws through

pre-drilled holes in duct temperature sensor back plate.

4. Insulate damper using 1-1/2-in. to 2-in. insulation. (Check

your local codes.)

4. Use two No. 6 sheet metal screws included with sensor to

mount duct temperature sensor back plate to unit.

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5. Insert 2-conductor wiring through 1 of pre-drilled holes in side

of back plate.

3. Connect black or white wire to terminal labeled B- and

connect red wire to terminal labeled R+.

4. Align sensor case with base plate then press firmly until cover

snaps into place.

6. Connect sensor to 2-wire conductor using provided wire nuts.

(See Fig. 16 for connection to Comfort Zone Center.)

Step 10—Sequence of Operation

Step 7—Install Dx Coil Sensor

TEMPERATURE SETPOINTS

The Dx coil temperature sensor is recommended for use in heat

pump with fan coil applications only. The sensor should be

installed between Dx coil and electric heaters. It measures Dx coil

temperature and adds extra protection for high/low temperature

limits. The range is from 30°F to 180°F. The Dx coil sensor

interfaces to Comfort Zone Center on terminal TB-1. (See Fig. 16.)

To activate Dx coil temperature sensor turn T-27 on. When

activated, the Dx coil sensor has built-in LAT setpoints of 50°F

and 45°F in the cooling mode, and 105°F and 110°F in the heating

mode. This is non-adjustable.

The Comfort Zone System uses 2 temperature setpoints. The

setpoints are displayed in the left-hand window on the 4 zone

controller. (See Fig. 18.)

In display window, cooling setpoint is shown on upper left and

heating setpoint is shown on lower right.

The temperature setpoints for any of the 4 zones can be displayed

by the 4 zone controller. When the 4 zone controller rotary switch

points to zone 1, setpoints for zone 1 at the 4 zone controller are

displayed. Selecting zone 2, zone 3, or zone 4 will display

setpoints for each of these zones which use either remote room

sensors or smart sensors. The system is not required to have all 4

zones installed.

Step 8—Install Four Zone Controller

The Four Zone Controller is the zone 1 thermostat. It is recom-

mended to locate this in the zone occupied as the living room or

family room for maximum comfort.

HEATING AND COOLING COMFORT SETPOINTS

If space temperature is between heating and cooling setpoints for

the zone, then the zone is said to be "satisfied" with respect to

temperatures. When a zone is "satisfied" no heating or cooling

equipment will turn on to condition the space. For example, if

cooling setpoint is 76°F and heating setpoint is 72°F, then a space

temperature of 73°F is assumed to be satisfactory and no heating

or cooling of zone is required.

DO NOT locate controller where supply air can blow directly on

it. Avoid locating controller where heat from any lamps, appli-

ances, or direct sunlight will affect temperature sensor on control-

ler. Do not locate on an outside wall or next to a return air grill.

1. Separate base plate from main body of controller.

2. Pull 3-wire cable for communication bus and 5-wire cable for

controller through 3/4-in. round hole on base plate. Three-wire

cable and 5-wire cable must be separate jacketed wiring. Do

not use one 8-wire cable. (See Fig. 17.)

If space temperature in a zone falls below heating setpoint, then

that zone needs to have heat added to zone which will raise space

temperature back to heating setpoint. For example, if heating

setpoint is 72°F and space temperature is 70°F, then space

temperature must be raised 2 degrees in order for zone to be

satisfied. In this case, temperature "heating demand" for zone is

2°F. (72°F minus 70°F.)

NOTE: Insulate or seal field wiring feed through hole to reduce

draft.

3. Mount base plate using provided screws, starting screw in

round hole first then second screw in slotted hole. On drywall

it is recommended to use provided plastic wall anchors.

Otherwise, if space temperature in a zone rises above cooling

setpoint, then that zone needs to have heat removed from zone

which will lower space temperature back to cooling setpoint. For

example, if cooling setpoint is 76°F and space temperature is 77°F,

space temperature must be lowered 1° in order for zone to be

satisfied. In this case, "cooling demand" for zone is 1°F. (77°F

minus 76°F.)

NOTE: If mounting controller using an electrical box, mount base

plate using pair of horizontal holes.

4. Level base plate and tighten screw in slotted hole first, then

the screw in round hole.

5. Connect the 3 wires for communication bus and the 5 wires for

controller to base plate terminal screws. (See Fig. 16.) Ensure

that there are no excess or bare wires exposed.

Comfort Zone allows owner or installer to set ranges for comfort

setpoints along with maximum and minimum temperatures which

can be used by system.

6. Plug base plate connector into back of main body and ensure

it is secure into connector located on back of 4 zone

controller’s main body. Ensure connectors and main body are

secure.

Comfort Zone allows both heating and cooling comfort setpoints

to operate in a 14° span. The heating and cooling temperature

"spans" can be set to allow for a selected range of operation.

Rotary switch position 9 sets base temperatures for both heating

and cooling spans.

7. Align main body with base plate and snap into place.

Step 9—Install Remote Room Sensors or

Smart Sensors (Optional)

When switch is set to 9, both heating and cooling base tempera-

tures are displayed and each can be modified by using up/down

setpoint buttons. The base temperatures are the same for all 4

zones.

Comfort Zone may have up to 4 zones. The 4 zone controller

controls zone 1. Remote room sensors or smart sensors control the

other 3 zones. If using a smart sensor, a smart sensor power pack

must be used. The remote sensors should be located 5 ft above the

floor and must be less than 200 ft away from Comfort Zone Center.

If cooling base temperature is set to 68°F, then cooling comfort

range will be 68°F to 82°F. If heating base temperature is set to

54°F, then heating comfort range will be 54°F to 68°F.

DO NOT locate sensors where supply air can blow directly on

them. Avoid locating sensors where heat from any lamps, appli-

ances, or direct sunlight will affect temperature sensor on room

sensors. Do not locate on an outside wall or next to a return air

grill.

1. Separate the 2 parts of sensor and mount back plate with

provided flat-head screw.

2. Pull a 2-wire conductor through hole on right-hand side.

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Zone Dampers

24 VAC Transformer

(Field Supplied)

HVAC

System

50 VAC req. for basic

4 damper system. Please

see Page 1, Electrical

Rating for details.

#16 AWG to

Grounded to Water Pipe

or Solid Electrical Ground

PWR. 24VAC

ZN4

BYPASS

ZN3

ZN2

ZN1

CL OP COM CL OP COM CL OP COM CL OP COM CL OP COM

Power

COMFORT ZONE I/O

COMM

BUS HAM

COMM BUS

CONTROLLER

CHR-06

LAT

ZT2

SHIELD

GROUND

W R

ZT4 ZT3

DX OAT

2:45

Zone 2*

Zone 3*

Zone 4*

4-Zone Controller

Zone 1

Dx Coil

Sensor

(optional)

Outside Air

Sensor

(optional)

Duct

Sensor

Remote Room

Sensors

Communication Bus

Custom Cable

CALLOUT TO PHONE PHONE LINE

POWER

COMM BUS

B Y G W R

Home Access Module

(optional)

Smart Sensor Power Pack

(optional)

* It is recommended that a 5 wire cable be used to install

Remote Room Sensors to allow

for future upgrade to Smart Sensors.

Smart Sensor

(optional)

A94311

Fig. 16—Comfort Zone System Wiring Diagram

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5. Set the zone damper positions based upon zone demand.

5 WIRE CONDUCTOR

(INTERFACE BOARD)

6. Energize additional stages of heating or cooling if demand

warrants.

3 WIRE CONDUCTOR

(COMM BUS)

7. Continue to adjust zone dampers as conditions within zones

change.

COMM BUS

8. Turn off heating or cooling equipment when all zones are

within 0.5°F of desired comfort setpoint.

GRN

RED

GREEN

RED

WHITE

RED

YELLOW

BLUE

GREEN

WHITE

9. Open all zone dampers when equipment is turned off.

WHT

RED

This is the basic Sequence of Operation for the Comfort Zone

system. The actual control of dampers, HVAC equipment, and

system fan will change with configuration of system. Depending

upon configuration, Comfort Zone can control heat pumps, fur-

naces, and dual fuel applications.

YEL

BLU

GRN

WHT

SELECTION OF A REFERENCE ZONE IN THE SYSTEM

The first step in any heating or cooling cycle requires Comfort

Zone to evaluate zones, determine if heating or cooling is needed,

and select a Reference Zone.

FIELD WIRING

(FEED THRU)

I/O BOARD

A93231

The Comfort Zone system actively looks at Comfort Setpoints and

space temperature in all zones. If any zone in system has a demand

of 1.5°F or more, then Comfort Zone will prepare to operate

heating or cooling equipment to reduce demand.

Fig. 17—Wiring Four Zone Controller

Changing the base temperatures will change the Comfort

Temperature Setpoints used in the system schedules. Always

set the Base Temperatures prior to programming the system

schedules.

First, Comfort Zone will select a reference zone in the system. The

reference zone will be zone with greatest demand. The zone

damper serving reference zone will be forced fully open and will

remain fully open as long as that zone is used as reference.

Comfort Zone also uses a minimum temperature and a maximum

temperature for comfort setpoints. The minimum and maximum

temperatures are the same for all 4 zones.

As long as any zone in system has a demand greater than or equal

to 1.5°F, then Reference Zone will be selected by zone with

greatest demand. Once all zones have a demand less than 1.5^oF,

Reference Zone selection will not change until demand in that

zone is below 0.5°F. At this point Comfort Zone will re-select

Reference Zone and position that particular zone damper fully

open.

The Maximum Temperature is only used for cooling. It is set by

selecting Rotary Switch Position S-2. The Maximum Temperature

setting is used when a temperature above the 14° span is selected.

If Cooling Base Temperature is set to 68°F and cooling setpoint is

82°F, any attempt to raise cooling setpoint will select Maximum

Temperature.

The objective of Reference Zone is to ensure that zone with

greatest demand is receiving as much conditioned air as system

will allow. It also gives Comfort Zone system a point of reference

in observing response of zones to equipment operation.

The Minimum Temperature is only used for heating. It is set by

selecting Rotary Switch Position S-3. The Minimum Temperature

setting is used when a temperature below the 14 ° span is selected.

If Heating Base Temperature is set to 54°F, any attempt to lower

heating setpoint below 54°F will select Minimum Temperature.

PRE-POSITIONING DAMPERS AND STARTING

THE SYSTEM FAN

Both Maximum and Minimum Temperatures are intended for use

with schedules or setpoints which are extreme compared to normal

building temperatures.

In order to minimize noise and enhance system operation, Comfort

Zone maintains all zone dampers full open prior to starting system

fan or heating or cooling equipment. The intent is to provide

HVAC equipment with unrestricted duct work and reduce pressure

surges. Comfort Zone also fully opens dampers whenever a

heating or cooling cycle is completed and system fan is shutting

down. If Fan Switch on 4 zone controller is set to Auto, then all

zone dampers will remain fully open until next heating or cooling

cycle.

Comfort Zone also has one additional set of temperature settings.

These are Vacation Setpoints. The Vacation Setpoints are heating

and cooling setpoints to be used in all 4 zones whenever 4 zone

controller rotary switch is turned to "Vacation." The Vacation

option is used to place entire building in setback during long

unoccupied periods without danger of freezing or extreme

heat/humidity.

The other reason for opening dampers is to provide unrestricted

duct work to other equipment which is not directly controlled by

Comfort Zone. One example may be Heat Recovery Ventilator. If

Comfort Zone is not actively controlling HVAC system, then it

must not impose any control influences (i.e., closed zone dampers)

on system and prevent proper operation of other devices.

SEQUENCE OF EVENTS FOR A NORMAL HEATING OR

COOLING CYCLE

Given Comfort Setpoints and space temperature for zones within

system, Comfort Zone will determine if active heating or cooling

is required. If so, Comfort Zone will perform the following:

For Fan operation, switch settings on 4 zone controller and system

configuration can change actual operation.

1. Select a reference zone.

2. Make sure all zone dampers are fully open.

3. Energize HVAC equipment fan.

If Auto Fan Off For Heating option (Rotary switch position

number T-9) is ON, then Comfort Zone will only energize fan for

cooling cycles. This option is intended for furnaces which will

control their own fan internally.

4. Energize heating or cooling equipment. The equipment may

be a compressor, furnace, strip heater, etc.

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If Fan Switch on 4 zone controller is set to ON instead of Auto,

then system fan will run continuously. Any time Comfort Zone is

operating fan, it will be in active control of system.

The damper positions in table are also used during a Float Mode.

A zone with a demand of 0.5°F will be set to position number 5.

The actual control of zone dampers by Comfort Zone system can

be modified using 3 configurable options. These are Maximum

Damper Position, Minimum Damper Position, and Ventilation

Mode.

NOTE: If Auto Fan Off For Heating option (rotary switch

position T-9) is ON, and Fan Switch on the 4 zone controller is

ON, Comfort Zone will operate fan full time.

These options apply to all zone dampers simultaneously. Any

dampers servicing Zone 1 cannot be configured differently than

those servicing Zone 2. The options are as follows:

Operating fan continuously will place Comfort Zone in a Float

Mode any time no active heating or cooling is taking place. During

Float Mode, Comfort Zone will position zone dampers based upon

demand in each zone. Comfort Zone will check air temperature in

duct work and allow air into zones if it will help zones reduce their

individual demands. For example, if temperature of air in duct

work is 65°F, cooling comfort setpoint for a zone is 72°F, and

space temperature is 73°F, then Comfort Zone will open damper

servicing that zone and allow cooler air into space.

1. The Maximum Damper Position (rotary position number

S-4) sets maximum open damper position for all 4 zones. The

allowable range for this option is damper positions number 8

through number 15 (fully open). The factory default is 15. The

only time zone dampers will exceed this position is if system

fan is off or zone dampers are being calibrated.

Ventilation Mode is only in effect when temperature of supply air

is between 65°F and 80°F. Ventilation Mode establishes minimum

position of zone dampers and is intended to help air movement

throughout zones and reduce chance of having areas which are

stagnant or have high humidities with respect to rest of system.

The changes to dampers are detailed in the next section "Control-

ling the Zone Dampers."

2. The Minimum Damper Position (rotary position number

S-5) sets minimum open damper position for all 4 zones. The

allowable range for this option is damper positions number 0

through number 7. The factory default is number 0 (fully

closed). If Ventilation Mode (rotary position T-25) is turned

OFF, then minimum damper position will be an absolute

minimum regardless of operating mode. If Ventilation Mode

is turned ON, then minimum damper position will be mini-

mum position during a Ventilation Mode only and dampers

will be allowed to fully close at any other time.

CONTROLLING THE ZONE DAMPERS

The zone dampers have a total of 16 possible positions or

increments which are numbered 0 (zero) through 15. Position

number 0 is fully closed and position number 15 is fully open.

While damper servicing reference zone remains fully open, all

other zone dampers are positioned by selecting a position equal to

demand of space in tenths of a degree. (See Table 2.)

3. Ventilation Mode (rotary position T-25). If Ventilation Mode

is turned ON, then any time air inside supply air duct work is

between 65°F and 80°F, system will be in a "Ventilation

Mode". During a Ventilation Mode all zone dampers will have

a minimum position which is set by Minimum Damper

Position (rotary position S-5). The zone dampers are not

allowed to fully close as long as supply air temperature

remains within the 65°F-80°F range. If supply air temperature

falls outside the 65°F-80°F range, then zone dampers may

fully close.

Table 2—Zone Damper Positions

Damper Position Versus Zone Demand

DAMPER

POSITION

DEMAND °F

DEMAND °C

NOTE: If Ventilation Mode option (rotary position T-25) is

turned ON, and Minimum Damper Position (rotary position S-5) is

set to position 0, there is no difference between Float Mode and

Ventilation Mode. In other words, Ventilation Mode option has

no effect on system.

Fully Closed

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

1.1

1.2

1.3

1.4

0.06

0.11

0.17

0.22

0.28

0.33

0.39

0.44

0.50

0.55

0.61

0.67

0.72

0.78

OPERATING THE HEATING AND COOLING EQUIPMENT

Before any heating or cooling equipment is started, Comfort Zone

must first choose between heating or cooling. For most of the year

there is little question as to the need for heat or cooling. But for

portions of the year, particularly during mid-season, a building

may have simultaneous needs for both heating and cooling.

The first step in selecting heating or cooling is the determination of

a Reference Zone. If there is a single zone which has greatest

demand, then it will become the Reference Zone and Comfort

Zone will start equipment based upon needs of that zone. If 2 zones

have same "greatest demand" but in different modes (1 needs

heating and the other needs cooling), then Comfort Zone will

select mode which has greatest number of zones which require

same mode.

1.5

0.83

Fully Opened

For example, a zone which has a 1.0°F demand will have damper

set to position number 10 while a zone which has a demand of

0.5°F will have damper set to position number 5. A demand of 0

(zero) will fully close zone damper. Any zone which has a demand

greater than 1.5°F will remain fully open.

CONTROL STRATEGY FOR HEATING / COOLING STAGES

The Comfort Zone system will attempt to minimize use of

additional stages of heating or cooling equipment. In an ideal case,

building conditioning needs can be supplied by first stage cooling

or first stage heating alone.

Notice that positions are based upon tenths of a degree Fahrenheit.

If Comfort Zone has Celsius Temperature Display option (rotary

position T-2) turned on, the damper control is still based upon

Fahrenheit scale.

For most heat pump applications, there may be only 2 or 3 stages

of heat depending upon type of emergency heater present. For a

heat pump, secondary heat source will generally be an electric strip

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Table 3—Heating System Option Vs. Type of Heater Used

FAN ON

FOR COOLING ONLY

TOGGLE:

HEAT PUMP

SYSTEM TOGGLE:

T-6

TWO STAGE

HEAT PUMP

TOGGLE: T-26

DUAL FUEL

SYSTEM SWITCH:

S-7

HEATER TYPE USED

IN SYSTEM

T-9

Single-Stage Heat Pump

Two-Stage Heat Pump

Off

0^oF (off)

Off

Heat Pump/Furnace Dual

Fuel

Off

10 to 60^oF

Off

Two-Stage Heat Pump,

Furnace Dual Fuel*

0°F

Furnace Heat Only

Strip Heater Only

Off

0^oF (off)

On or Off

Off

* Refer to 2-speed heat pump Installation and Start-Up Instructions for details regarding 2-speed heat pump operation. It is recommended that heat pump control board

controls operation of this equipment and not Comfort Zone.

Table 4—Available Heating and Cooling Stages Vs. System Type

TYPE OF HVAC

COOLING STAGE 1

COOLING STAGE 2

HEAT STAGE 1

HEAT STAGE 2

HEAT STAGE 3

HEAT STAGE 4

EQUIPMENT USED

Cooling Only, any Heater Type

Single-Stage Heat Pump

Two-Stage Heat Pump

For cooling applications, the second stage of an air conditioner is not necessarily more expensive to operate than first stage. But additional cooling can drive down the

efficiency of a 2-speed air conditioner and longer use of first stage alone tends to deliver better humidity control in moist climates. Again, because of these advantages,

Comfort Zone will attempt to minimize use of second stage cooling. This is not as great of a concern for a heating application, because the majority of small air

conditioning systems sold today (5 tons and below) are single-stage cooling only.

heater. The electric strip heat is much more expensive to operate

when comparing cost per unit of heat. Because auxiliary stages of

heating tend to be more expensive to operate, Comfort Zone

attempts to keep number of stages at a minimum.

For cooling only applications with any type of heater, Comfort

Zone will only control 2 stages of heat. If system uses a heat pump,

then Comfort Zone will control 3 stages of heat. The additional

stage is heat pump compressor contact. The auxiliary heat is still

2 stages. If system uses a 2 stage heat pump, then Comfort Zone

will control 4 stages of heat, 2 stages for heat pump and 2 stages

for auxiliary heat.

CONFIGURATION OPTIONS FOR EQUIPMENT

OPERATION

Comfort Zone has several configurable options which allow it to

control different types of HVAC equipment and change the

manner in which the equipment is controlled. This first group must

be set given the type of HVAC equipment installed. These include:

The Comfort Zone Relay Pack outputs are shown in Table 4. The

Y1 and Y2 contacts are used for compressor contacts only.

Comfort Zone operates heat pumps by energizing compressor

contacts and controlling reversing valve through Reversing Valve

(RV) relay output. The W1 and W2 contacts are always used for

heat sources. These are heating only units such as furnaces, strip

heaters, etc. The relay outputs for Comfort Zone 1.4 are shown in

Table 4.

1. Heat Pump Operation (Rotary Position T-6).

2. Two-Stage Heat Pump (Rotary Position T-26).

3. Dual Fuel trip temperature (Rotary Position S-7).

4. Auto Fan Off For Heat (Rotary Position T-9).

The second group modifies the way the HVAC equipment is

controlled. These include:

Under no circumstances may the W1 and Y1 contacts on the

relay pack be jumpered together. This is a common practice

for many heat pump installations but will cause improper

operation of the Comfort Zone (1.4 or greater) system.

1. Comfort Trend Staging (Rotary Position T-8).

2. System Mode Reselect (Rotary Position T-22).

3. High/Low Temperature Limits Enabled (Rotary Position

T-10).

STARTING THE HVAC EQUIPMENT

4. High Temperature Trip Limit (Rotary Position S-6).

5. Dx Sensor (Rotary Position T-27).

Once Comfort Zone selects a mode, controller will use configu-

ration options to modify control of HVAC equipment. The

controller first selects number of stages of heating and cooling that

may be applied to building load. The "available" stages are

determined by Reference Zone temperature demand and are shown

in Table 5.

6. Smart Start (Heat Pump Strip Heat Economy Feature)

The first options which must be set are based upon the type heater

or heaters used. These are shown in Table 3. The only option

which appears to impact cooling operation is Two-Stage Heat

Pump which implies the availability of 2 stages of cooling. In

reality there are no changes to cooling control scheme.

Using Table 5, if Reference Zone has a 2.3°F demand, then

Comfort Zone may use 2 stages of cooling or 2 stages of heating.

The HVAC equipment may not have 3 stages of heat or even 2

stages of cooling. The table is only used to determine what

equipment Comfort Zone is allowed to turn on at any given time

during a heating or cooling cycle. Actual operation of stages

depends on other variables as well.

Comfort Zone assumes that there are always 2 stages of cooling

present. These are connected to the Comfort Zone Relay Pack on

the Y1 and Y2 contacts.

RELAY PACK TO HVAC EQUIPMENT CONNECTIONS

Given system configuration, Comfort Zone can determine number

of heating stages that it will actually control and which relay

outputs will be used to control each stage of heat. Comfort Zone

can control up to 4 stages of heat depending upon system

configuration.

Normally Comfort Zone will start equipment operation when it has

a demand of 1.5°F or greater. In some cases, Comfort Zone will be

facing a demand greater than 1.5°F when a mode is starting. This

can occur when user changes setpoints in a zone or if a schedule

change has reset the Comfort Setpoints.

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heat and switch into a cooling mode. Once cooling demand is

satisfied (or System Mode Reselect dictates a switch), Comfort

Zone will revert to a heating mode in order to try and satisfy that

demand.

Table 5—HVAC Equipment Stages

Vs. Zone Demand

HEATING & COOLING

DEMAND °F

DEMAND °C

EQUIPMENT STAGES

First-Stage Cooling

Second-Stage Cooling

First-Stage Heating

Second-Stage Heating

Third-Stage Heating

Fourth-Stage Heating

The need for System Mode Reselect usually indicates some type of

system problem. Common use of System Mode Reselect may be

caused by poor or improper duct work, open windows or doors,

HVAC equipment failure, improper equipment sizing, etc. The

need for System Mode Reselect usually occurs in larger installa-

tions where zone use or occupancy may vary widely. For residen-

tial application, the need for System Mode Reselect is normally not

frequent unless the building has unusual architectural features or

problems with HVAC system.

1.5

2.0

1.5

2.0

2.5

3.0

0.83

1.11

0.83

1.11

1.39

1.67

NOTE: Comfort Zone uses a 3-minute timer to delay start of

second-stage (heating or cooling). This timer is started whenever

first-stage heating or cooling is energized. This delay cannot be

overridden or disabled.

High/Low Temperature Limits is an option that allows Comfort

Zone to control equipment stages and position dampers based upon

temperature of supply air leaving HVAC equipment. As the

Comfort Zone system operates through a heating or cooling cycle,

zone demands and damper positions will change. This changes

actual tonnage or BTUH that is applied to HVAC equipment. The

tonnage generated by HVAC equipment must equal tonnage

placed into zones. If zone’s airflow decreases, cooling equipment

will tend to drive down supply air temperatures. Conversely,

heating equipment will tend to drive up supply air temperatures.

STAGE CONTROL DURING EQUIPMENT OPERATION

As shown earlier, Comfort Zone has 6 configurable options which

help govern equipment operation. They are:

1. Comfort Trend Staging (Rotary Position T-8).

2. System Mode Reselect (Rotary Position T-22).

With High/Low Temperature Limits turned ON, Comfort Zone

will detect this condition and take corrective action. The first step

taken by Comfort Zone will be to start turning off extra stages of

equipment. this will continue until either the Leaving Air Tem-

perature problem is corrected or system is operating on first-stage

heating or cooling only.

3. High/Low Temperature Limits Enabled (Rotary Position

T-10).

4. High Temperature Trip Limit (Rotary Position S-6).

5. Dx Sensor (Rotary Position T-27).

6. Smart Start (Heat Pump Strip Heat Economy Feature)

If system is operating on first-stage heating or cooling, Comfort

Zone will begin to gradually open zone dampers. This can continue

until system has become a fully-open constant-volume system if

needed. The objective is to provide required heating or cooling as

best as possible prior to shutting off equipment. In practice the

control tends to match equipment capacity to zone demands and

will seldom revert back to a fully-open system.

Comfort Trend Staging and High/Low Temperature Limits

control the use of extra stages of heating and cooling. Both can be

turned off by the installer but the use of these options is highly

recommended.

Comfort Trend Staging is used by Comfort Zone as an aid to

decide if second-stage (heating or cooling) is needed. The system

must have at least 1 zone with a demand equal to or greater than

2.0^oF to allow use of second stage. Comfort Trend looks at

temperature inside zone and watches trend over time. If zone

demand is being lowered by first-stage operation, second stage is

not energized. Stage 1 would remain ON and Stage 2 would

remain OFF as long as temperature and trend continued to

improve.

The Leaving Air Temperature control can also indicate problem

zones within a system which are not receiving sufficient airflow. If

1 area (or zone) within a building has difficulty becoming satisfied

then there may be a sizing problem or an obstruction in duct work

supplying that zone.

To use the Leaving Air Temperature Control, 3 options must be

setup properly. They are:

Comfort Trend Staging uses a 6-minute timer and a record of the

Reference Zone demand to control second stage. When Comfort

Trend Staging starts, demand in Reference Zone is recorded and

temperature in zone is continuously monitored. If demand in

Reference Zone is reduced (temperature is approaching comfort

setpoints), then 6-minute timer is restarted and new demand is

recorded. If 6-minute timer expires and demand is the same or has

grown greater, Comfort Zone will start second stage.

1. High/Low Temperature Limits Enabled (Rotary Position

T-10).

2. High Temperature Trip Limit (Rotary Position S-6).

3. Dx Coil Sensor For Leaving Air Temperature Checking

(Rotary Position T-27).

First, High/Low Temperature Limits Enabled must be turned

ON. This is the ON-OFF switch for the control option. The

temperature used for this control is measured by Remote Duct

Sensor and (optionally) the Dx Coil Sensor.

Comfort Trend works for all stages of heating and cooling

operation.

Comfort Trend staging will be used if rotary Position T-8 is turned

ON. If T-8 is turned OFF, then second stage will be energized

whenever Reference Zone demand meets or exceeds 2.0°F and

after 3-minute delay.

The High Temperature Trip Limit (Rotary Position S-6) is

supply air temperature for heating that the Leaving Air Tempera-

ture control uses to detect a problem during heating modes only.

The Comfort Zone thermostat will display a number between 05

and 55°F. The actual temperature is 100°F greater, such that the

actual range is 105°F to 155°F. Comfort Zone cannot display the

100’s digit.

System Mode Reselect allows Comfort Zone to switch between

heating and cooling even if current system demand has not been

satisfied. For example, if Comfort Zone is providing heat, System

Mode Reselect allows Comfort Zone to look at any cooling needs

which may also exist in the building. If cooling demand exceeds

heating demand for 20 minutes, Comfort Zone will stop providing

Selecting the Offset Temperature picks the temperature when

Comfort Zone will start taking action to correct the Leaving Air

Temperature. If limit temperature is between 105°F and 109°F,

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then temperature at which first stage will be shut down will be

offset 5°F above limit value (110°F to 114°F). If limit temperature

is between 110°F and 155°F, then temperature at which first stage

will shut down will be offset 20°F above limit value (130°F to

175°F). For Cooling modes the temperature is fixed at 50°F (10°C)

for starting the control and 45°F (7.2°C) for turning off first-stage

cooling.

Table 6—Programmable Options-Settings

SETTING

NO.

FACTORY

DEFAULT

SETTING NAME

VALUE

S-1

S-2

S-3

S-4

S-5

S-6

S-7

4 Zone Controller Bus Address

Maximum Cooling Setpoint

Minimum Heating Setpoint

Maximum Damper Position

Ventilation/Minimum Damper Position

High Temperature Trip Limit

Dual Fuel Setpoint

4-64

80-95

34-64

8-15

0-7

The heating value must be set given the type of heater used in the

system. This is for the final heat source. So a heat pump with

strip heat would use a temperature appropriate for strip heaters. A

furnace application may have a setting in the 130°F to 155°F

range. Strip heaters may fall into a 115°F to 130°F range. Heat

pump only systems may use 105°F to 115°F. Check equipment

manufacturer recommendations and verify setting is in accordance

with UL, NFPA, or any applicable Local or State Building Codes.

If there is any question about what may be an appropriate

temperature setting, use conservative (low) temperatures.

105-155

0 or 10-60

105

ZONE 1 Address of 4 zone controller

ZONE 2 Address must be 1 less than zone 1

ZONE 3 Address must be 2 less than zone 1

ZONE 4 Address must be 3 less than zone 1

To set address of a Smart Sensor, rotary switch position 1 on

Smart Sensor must be selected first.

Dx Coil Sensor For Leaving Air Temperature (Rotary Position

T-27) allows Comfort Zone to use a Dx Coil Sensor in addition to

Remote Duct Sensor for Leaving Air Temperature Checking. The

Dx Coil Sensor is used in heat pumps with fan coil applications

and will be located after the Dx coil and before any strip heaters.

This sensor is only active during heat pump operation. The

temperature setting for this sensor is fixed at 105°F for initiating

the control option and 110°F for shutting down first stage.

2. Maximum Cooling Setpoint (S-2)

This is the highest temperature value to which cooling setpoint

can be adjusted. All zones will use same value. The maximum

cooling setpoint can be programmed from 80°F to 95°F. This

allows cooling setpoints to be programmed above normal

range.

Example: Maximum cooling setpoint is programmed at 92°

F. The temperature range for cooling setpoint is 70° F to 84°F.

When the COOL setpoint up button is pressed to adjust

cooling setpoint above 84°F, setpoint will jump to 92°F.

Heat Pump-Strip Heat Economy Feature (Smart Start). This is

an automatic control within Comfort Zone and not a selectable

option. The Smart Start feature is used whenever primary source of

heat is a heat pump. As such, the Heat Pump toggle (Rotary

Position T-6) must be turned ON. Smart Start is designed to help

minimize use of strip heat or emergency heat whenever a large

heating demand occurs due to a scheduled setpoint change. Smart

Start looks at scheduled comfort setpoints for the next hour. If

scheduled setpoints will make system provide heat, Smart Start

will start heat pump an hour early. Smart Start will operate until

zone demand is brought within 0.5°F (0.28°C) of the next hour’s

heat setpoint or setpoints change due to the schedule (the hour

expires).

3. Minimum Heating Setpoint (S-3)

This is the lowest temperature value to which heating setpoint

can be adjusted. All zones will use same value. The minimum

heating setpoint can be programmed from 34°F to 64°F. This

allows heating setpoints to be programmed below normal

range.

Example: Minimum heating setpoint is programmed at 56°

F. The temperature range for heating setpoint is 66° F to 80°F.

When the HEAT setpoint down button is pressed to adjust

heating setpoint below 66°F, setpoint will jump to 56°F.

Smart Start assumes auxiliary heat is more expensive to operate

when compared to heat pump and it assumes that heat pump is a

relatively "slow" source of heat. Smart Start allows a zone to

recover from a setback or unoccupied period and use the most

economic source of heat in doing so. The idea of using a setback

or unoccupied schedule is to save money in operating costs. There

is little incentive to use schedules if zone is heated with most

expensive source of heat available.

4. Maximum Damper Position (S-4)

This is the highest open position to which a damper will

change. Full open is designated as position 15. Maximum

open damper position can be programmed between 8 (half

open) and 15, in increments of 1. All zone dampers will use

the same programmed maximum value.

5. Ventilation/Minimum Damper Position (S-5)

When there is no demand for cooling or heating, this is the

minimum position that every zone damper will maintain as

long as air temperature in duct work is between 65°F and

80°F. Full closed is designated as position 00. Minimum open

damper position can be programmed between 7 (half-open)

and 00, in increments of 1. All zone dampers will use the same

programmed ventilation value.

Step 11—Configuring Four Zone Controller

PROGRAMMABLE OPTIONS-SETTINGS

Turn zone selector dial to position S. (See Fig. 18.) The controller

display shows setting number and its value.

The upper 2 digits show the setting’s number and the lower 2 digits

show the value of setting.

6. High Temperature Trip Limit (S-6)

Press the COOL up or down setpoint buttons to change setting

number and the HEAT up or down setpoint buttons to change

value. Refer to Table 6 for settings and their definitions.

The trip temperatures limits are duct temperatures used to turn

HVAC equipment off to prevent damage to equipment.

Temperature values are measured by duct temperature sen-

sors.

1. Zone Controller Bus Address (S-1)

This setting establishes the identity of the 4 zone controller on

the Carrier communication bus.

The low temperature trip limits are 50°F (turn off second-stage

cooling) and 45°F (turn off first-stage cooling) and cannot be

changed.

NOTE: Remote room sensors do not require addressing.

If using optional Smart Sensors, they must be addressed as

follows:

The second-stage high temperature trip limit can be pro-

grammed from 105°F to 155°F.

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If a value of 105 to 110 is selected (second-stage heating is

turned off at this value) then the first-stage high temperature

trip limit is the programmed value plus 5°F (first-stage is

turned off).

If a value of 111 to 155 is selected (second-stage heating is

turned off) then the first-stage high temperature trip limit is the

programmed value plus 20°F (first stage is turned off).

Example 1:

High temperature trip limit selected is 105°F. (Shown as 05 in

controller display.)

Second-stage heat will turn off when duct temperature sensor

measures a temperature greater than 105°F.

First-stage heat will turn off when duct temperature sensor

measures a temperature greater than 110°F.

Example 2: High temperature trip limit selected is 140°F.

(Shown as 40 in controller display.)

Second-stage heat will turn off when duct temperature sensor

measures a temperature greater than 140°F.

First-stage heat will turn off when duct temperature sensor

measures a temperature greater than 160°F.

Table 7—Wiring Diagram Reference

For Fig. 19 and 20

FAN COIL WITH AIR CONDITIONER

INDOOR UNIT (FIG. 19)

FA4A

OUTDOOR UNIT

FB4A

FC4B

FK4A

FK4B

Single-Stage

Air Conditioner

Two-Speed

Air Conditioner

C†

FURNACE WITH AIR CONDITIONER

INDOOR UNIT (FIG. 20)

58WAV

58PAP 58ZAV

58RAP 58PAV

58GFA 58RAV

OUTDOOR UNIT

58TUA

58TMA

58VUA/VCA 58DFA 58SXC 58MVP

58EFA 58DXC

58SXA 58EJA

58DXA 58MXA

58MCA

7. Dual Fuel Setpoint (S-7)

Single-Speed

Air Conditioner

A* B

D E*

This option is used with a system that has a heat pump and

another heat source (possibly gas) that should not run at the

same time as heat pump. When any heat pump is on, all

auxiliary heat will be off, and vice versa.

Two-Speed

Air Conditioner

F†

G†

H I †

* KGATT0101VSP (Optional) Two-stage relay kit— may help to control over

conditioning.

† Latent capacity control—Required, field supplied. See 2-speed Installation

Instructions.

NOTE: The auxiliary heat must always have greater heating

ability than the heat pump at low outdoor temperatures for this

option to have any value.

NOTE: If Dual Fuel setpoint is set to 0, then this option is

disabled. If Dual Fuel option is used, an outside air temperature

sensor or refrigerated air sensor must be used.

Table 8—Wiring Diagram Reference

For Fig. 21 and 22

FAN COIL WITH HEAT PUMP

INDOOR UNIT (FIG. 21)

When dual fuel setpoint variable is set to outdoor temperature

(10°F to 60°F) that is the crossover point between running

heat pump or using auxiliary heat as the preferred method of

heating.

The setpoint is used only when the first stage of heating is

brought on. If outdoor temperature is above setpoint, heat

pump (Y1) is energized. If outdoor temperature is below

setpoint, auxiliary heat (W1) is used. If heat pump is started

and outdoor temperature goes below setpoint, dual fuel option

is not used for that heating cycle.

FA4A

FB4A

FC4B

OUTDOOR UNIT

FK4A

FK4B

Single-Stage

Heat Pump

Two-Speed

Heat Pump

C†

FURNACE WITH HEAT PUMP

INDOOR UNIT (FIG. 22)

58WAV

58PAP 58ZAV

58RAP 58PAV

PROGRAMMABLE OPTIONS-TOGGLES

Turn zone selector dial to position T. (See Fig. 18.) The controller

display shows setting number and its value.

58GFA 58RAV

OUTDOOR UNIT

58TUA

58TMA

58VUA/VCA 58DFA 58SXC 58MVP

58EFA 58DXC

The upper left 2 digits show setting number while the right side

shows the value of ON or OFF.

58SXA 58EJA

58DXA 58MXA

58MCA

Press the COOL up or down setpoint buttons to change toggle

number and the HEAT up or down setpoint buttons to change

status of toggle. (See Table 11.)

Single-Speed

Heat Pump

A** B* **

E** F* **

Two-Speed

Heat Pump

G†

H†

Step 12—Wiring Diagrams

* KGATT0101VSP (Optional) Two-stage relay kit—may help to control over

Refer to Tables 7 and 8 for wiring diagram reference information.

Step 13—Start-Up

conditioning.

† Latent capacity control—Required, field supplied. See 2-speed Installation

Instructions.

** Field-supplied isolation relay.

1. Verify that zone number for remote room sensors and corre-

sponding zone damper wire connections are the same in the

Comfort Zone Center.

4. Make sure that the 3 wire communication bus cable for the 4

zone controller is not run in same conduit, or use same cable

jacket, as the 5 wire conductor of the 4 zone controller.

2. Check that AC power wires (dampers and transformer) are

kept away from DC wires (remote room sensors, 4 zone

controller, communication bus) leading up to, and in the

Comfort Zone Center.

5. On a remote room sensor follow wire guide stamped on base

by terminal screws in order to keep polarity and voltages

correct. Otherwise sensor will not work properly.

3. Check location of 4 zone controller and remote room sensors

to make sure that they are not near heat producing devices

such as lamps, sunlight, and appliances.

6. Make sure duct temperature sensor is placed in supply air duct

work, downstream of furnace and evaporator coil, and up-

stream of bypass damper.

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7. Write down on a piece of paper AND GIVE TO THE

OWNER a list showing what rooms are controlled by what

dampers, and their corresponding zone numbers. Keep list for

your future use.

13. Instruct owner to call 800 number supplied with Comfort Zone

Center to receive free "How to use Comfort Zone" video tape.

14. For toggle settings for configuration see Programmable

Toggles and Options and Table 9.

8. Instruct owner to turn cool switch OFF in the fall, and turn it

ON in the spring.

Step 14—Programming Schedules

The 4 zone controller is the program center for the Comfort Zone

System. The 4 zone controller provides the ability to program

system for unique demands of each zone at different times during

the day and week. See Fig. 18 to become familiar with various

parts of the 4 zone controller.

9. Make sure emergency heat switch is in the OFF position. If a

gas furnace is used this switch should never be turned on. It is

for heat pumps only.

10. Be sure and set clock to correct time of day. You only need to

do this when you first power up system, or after a power

outage lasting longer than 8 hours.

SYSTEM SWITCHES

System switches select desired equipment operation.

Heat Switch

11. Go to rotary switch setting 2 on the 4 zone controller. Check

calibration of room sensor. Do same for zones 2, 3, and 4

(rotary switch 3-4-5). Sensors must be calibrated.

OFF—Heat will not come on.

AUTO—Heat will come on when any zone is more than 1.5°F

12. Instruct owner in operation of Comfort Zone System

below desired heat setpoint.

CONTROLLER DISPLAY

INDICATES ZONE SETPOINTS, ZONE TEMPERATURES,

AND PROGRAMMING INFORMATION AND

ALLOWS SETPOINT ADJUSTMENT.

CLOCK DISPLAY

INDICATES THE CURRENT TIME AND DAY

AND THE START TIMES/WEEKLY PERIODS

DURING PROGRAMMING.

FOUR

ZONE

CONTROLLER

SET

SELECT

TIME/TEMP

MIN/HR/DAY

OPTIONS

SET

TIME/TEMP

SCHEDULES

ZONE

SELECT

MIN/HR/DAY

SCHEDULES

ZONE

HOLD

TEMPERATURES

ADVANCE

TIME/DAY

ZONE

OFF AUTO

HEAT

AUTO OFF

COOL

AUTO

OFF

ZONE

HOLD

TEMPERATURES

ADVANCE

TIME/DAY

FAN

EMERGENCY HEAT

VACATION

PROGRAMMING ADJUSTMENT BUTTTONS

ALLOWS FOR PROGRAMMING WEEKLY PERIODS, START TIMES

FOR EACH ZONE AND SETS THE CLOCK FOR DAY AND TIME.

OPTIONS

ZONE 1

ZONE 2

ZONE 3

ZONE 4

OFF AUTO

HEAT

AUTO OFF

COOL

AUTO

OFF

FAN

EMERGENCY HEAT

VACATION

SYSTEM SWITCHES

PROVIDES FOR SELECTION OF HEAT, COOL,

FAN AND EMERGENCY HEAT OPERATION.

ZONE SELECTOR DIAL

PROVIDES ACCESS TO INFORMATION AND PROGRAMMING

FOR EACH ZONE AND SELECTION OF VACATION MODE.

OPTION AREA IS FOR USE BY INSTALLATION/SERVICE.

A93232

Fig. 18—Four Zone Controller

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Cool Switch

Setting The Clock

The clock display will normally show hour, minutes, AM or PM,

and day.

OFF—Cooling will not come on.

AUTO—Cooling will come on when any zone is more than 1.5°F

1. Set minutes.

above desired cool setpoint.

Press SELECT MIN/HR/DAY button once.

Fan Switch

Press ADVANCE TIME/DAY button to scroll to proper

minutes.

ON—Fan will stay on continuously (recommended).

AUTO—Fan will come on only when heating or cooling is

required.

2. Set hour.

Press SELECT MIN/HR/DAY button once again.

Emergency Heat Switch (Heat Pump Systems only)

Press ADVANCE TIME/DAY button to scroll to proper hour,

AM or PM.

OFF—Electric strip heat will not come on unless there is a zone

more than 2°F below desired heat setpoint and comfort trend

demand has been satisfied.

3. Set day.

ON—When any zone requires heat, electric strip heat will turn on.

The compressor will remain off.

Press SELECT MIN/HR/DAY button once again.

Press ADVANCE TIME/DAY button to scroll to proper day.

4. Return to normal operation.

CONTROLLER DISPLAY

Press SELECT MIN/HR/DAY button once again. The newly

programmed time will be displayed.

When set for normal operation, the 4 zone controller display shows

current zone temperature setpoints and allows adjustment of these

setpoints using setpoint buttons. By pressing both heating or

cooling setpoint buttons simultaneously, controller will lock in and

display temperatures for that zone. To release, push both buttons

simultaneously again. This will only work when T-20 is off.

Programming Schedules

1. Enter Program Mode

Press SET TIME/TEMP SCHEDULES button to enter pro-

gram mode. The program mode and current zone will be

shown on controller display.

ZONE SELECTOR DIAL

2. Select a zone.

To view setpoints for each zone, turn zone selector dial to zone

number you wish to view.

Turn rotary switch to the zone to be programmed.

3. Select a weekly period.

The setpoints for selected zone will be displayed in controller

display.

The clock display will show MTWTHF.

Program Schedules

Pressing ADVANCE TIME/DAY button selects weekly pe-

riod to be programmed.

Each zone has 3 different weekly periods, (Weekdays, Saturday,

and Sunday) and up to 4 different possible combinations of heating

and cooling setpoints that can be programmed to provide auto-

matic climate control depending upon day of week and time of

each day. Each zone can be programmed independently. (See

Table 9.)

Pressing button 1 time will change clock display to SA.

A second press will change display to SU.

A third press returns display to MTWTHF.

4. Program time periods.

There are 4 start times that can be programmed in each weekly

period.

NOTE: All zones must be programmed.

Table 9—Example Weekly Schedule

Press SELECT MIN/HR/DAY button to program start times

for selected weekly period.

WEEKDAYS

SATURDAY

SUNDAY

Pressing SELECT MIN/DAY/HR button once shows first

program start time on clock display and setpoints, with the

word PROGRAM for this start time on controller display.

6 AM

72/70

85/65

70/68

85/65

7 AM

72/68

85/65

70/68

85/65

8 AM

72/70

85/65

70/68

85/65

8 AM

5 PM

10 AM

2 PM

10 AM

7 PM

10 PM

11 PM

10 PM

Additional presses display start times 2, 3, 4, and then back to

weekly period display.

WEEKLY PERIOD

Cooling Setpoint/Heating Setpoint

Start Time

NOTE: While in program mode, if a period of 4-1/2 minutes

passes without a change to some value, the controller will return to

normal operation.

Vacation Mode

5. Program start time

Vacation mode displays current vacation temperature setpoints and

allows adjustment of these setpoints using setpoint buttons. These

setpoints are used by all zones until selector dial is returned to 1 of

the zone selection positions. At all times, the setpoints displayed

will be the temperature range that the system will maintain.

NOTE: Start times must be programmed in chronological order

and must be in the same day. Any times before previous time

period will be ignored. In the WRONG example below, periods 2

and 4 will be ignored.

RIGHT

6 AM - TIME PERIOD 1

8 AM - TIME PERIOD 2

5 PM - TIME PERIOD 3

9 PM - TIME PERIOD 4

This mode can also be used to maintain entire home at 1 constant

temperature-typically when unoccupied.

NOTE: If Fan Switch is set to ON, fan will continue to run in

vacation mode.

WRONG 6 AM - TIME PERIOD 1

2 AM - TIME PERIOD 2

To enter vacation mode, turn selector dial to VACATION. The

word "VACATION" will appear on controller display whenever

system is in this mode. Set vacation mode setpoints.

9 PM - TIME PERIOD 3

5 PM - TIME PERIOD 4

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Press ADVANCE TIME/DAY button until desired start time

is displayed.

Table 10—Temperature Sensor Calibrations

ZONE SELECTOR

DIAL

SENSOR TO BE

CALIBRATED

6. Adjust setpoints.

Damper Service

Position

Adjust setpoints using up and down buttons until desired

temperatures for the selected time period appear in display.

These setpoints will be used during the time period currently

displayed in clock window.

Position 1

Position 2

Position 3

Position 4

Position 5

Position 6

Zone 1 Temperature

Sensor

Zone 2 Temperature

Sensor

7. Complete time period programming.

Repeat 4 through 6 to program remaining weekly period start

times. Each weekly period can be programmed with 4 differ-

ent time periods.

Zone 3 Temperature

Sensor

Zone 4 Temperature

Sensor

8. Complete weekly schedule.

Duct Temperature

Sensor

After completing start time programming, press SELECT

MIN/HR/DAY until MTWTHF reappears in clock display.

Outside Air

Temperature Sensor

Position 7

Position 8

Position 9

Repeat steps 3 through 7 to program weekly periods. Once

finished, this will complete programming of 1 zone.

Dx Coil Sensor

Base Temperature Set-

point Scale

9. Program a different zone.

To program a different zone, turn rotary switch to desired zone

to be programmed and repeat 2 through 8.

Bypass Damper Pressure Relief Limit

10. Exit program mode.

We do not encourage using a motorized bypass damper. Using a

barometric bypass damper is the preferred method to control

operating pressures in supply duct.

Exit program mode by pressing SET TIME/TEMP SCHED-

ULES button.

Overriding Programming

The display shows zone number in the upper left digits, and the

lower right digits show damper position. The left hand setpoint

buttons will toggle the zone number (1-4) and also to 5 where

collective damper position is programmed in for bypass. When it

is toggled to position 5 and annunciator is toggled from OFF to ON

with right hand buttons, controller totals all damper positions and

stores them. While displaying 1-4, the damper for that zone can be

directed to any position with right hand buttons. The collective

damper position that is programmed at position 5 is the minimum

total damper open position. The largest minimum open position is

60 (4 zones with 15 positions each). The number that is pro-

grammed in will be the minimum total damper open positions that

bypass will try to maintain. The bypass damper positions are 1 for

every 3 that the total needs. (Example: The maximum total is 60,

but only 3 dampers are open. This is only 45, so bypass takes 60,

subtracts 45, comes up with 15, and divides this number by 3. The

result is 5, so bypass goes to position 5.)

To override time programming, press any setpoint button. This

will also adjust setpoints for override period. Once setpoints are

adjusted, they will not change until the next programmed time

period for that zone.

If HOLD TEMPERATURES button is pressed, then current

setpoints will not change with time, but remain at last values

entered for as long as hold mode is active.

To release hold mode, press HOLD TEMPERATURE button a

second time.

The controller display will show the word HOLD whenever hold

mode is active.

Temperature Sensor Calibration

NOTE: Temperature sensors are factory calibrated; however,

field calibration is recommended.

The setpoint display shows actual temperature (Fahrenheit or

Celsius).

Step 15—Accessories

The upper left-hand corner of display indicates the whole number

value. The lower right-hand corner indicated the tenths.

Refer to individual Installation Instructions packaged with kits or

accessories when installing.

Pressing either HEAT or COOL button raises or lowers displayed

temperature by 1/10 of a degree.

HOME ACCESS MODULE

The Home Access Module (HAM) is designed to detect Comfort

Zone System errors. The HAM can report when system is

operating correctly, or when an error is detected. The HAM can

automatically call an ACS dealer or the ACS National Response

Center.

If temperature readings are not stable within 0.5°F, refer to

troubleshooting section for details.

Damper Service Mode

The Damper Service Mode can be selected to check full operation

of each zone damper independently. The controller display shows

zone number in the upper left digits, and damper position in the

lower right digits. The left hand setpoint buttons will toggle the

zone number (1-4) and 5.

NOTE: The HAM must be programmed via Report Logger or PC

Command Center Software prior to installation.

SMART SENSOR AND SMART SENSOR POWER PACK

NOTE: No. 5 not used for damper service mode, see below for

details when setting motorized bypass damper pressure relief limit.

NOTE: These 2 accessories must be used together.

The Smart Sensor provides the ability to view and adjust setpoints

in zone where sensor is located.

When this mode is selected, all 4 zone dampers are activated and

opened to position 15. (See Table 2.) Fan will energize. Use right

hand setpoint buttons to toggle down from position 15 to position

0. This feature can verify that each zone damper is operating

properly by manually opening and closing each zone. When rotary

switch dial is moved onto another position, Damper Service Mode

will be cleared and controller will resume normal operation.

The Smart Sensor replaces a Remote Room Sensor and requires a

single 5-wire conductor instead of a 2-wire conductor.

OUTSIDE AIR DAMPER

The outside air damper allows fresh outside air into building.

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OUTSIDE AIR TEMPERATURE SENSOR

When any zone cannot maintain room temperature within 5°F of

desired setpoint for a period of 20 minutes, a comfort trend error

is declared. This error is transparent and will not be shown on

controller display. If a Home Access Module (HAM) is on the

system, the ACS dealer or national ACS response center will

receive a call identifying this error.

The Outside Air Temperature Sensor must be used whenever an

Outside Air Damper is installed. An Outside Air Temperature

Sensor must also be used for dual fuel applications.

Step 16—Troubleshooting

This section contains information to assist you in troubleshooting

problems and errors associated with the Comfort Zone System.

The most common operating problems and different types of errors

associated with the Comfort Zone System are:

Operating Problems—No display, flashing display, and flashing

HEAT or COOL annunciators. Comfort Zone controller selects a

system mode but does not energize heating/cooling unit.

Hardware Failure (HF) Errors—Occur when Comfort Zone

controller detects a problem with 1 of its own components or an

associated device.

CARE AND MAINTENANCE

For continuing optimum performance and to minimize possible

equipment failure, it is essential that periodic maintenance be

performed on this equipment. Consult your servicing contractor or

User’s Manual for the proper frequency of maintenance. Fre-

quency of maintenance may vary depending upon geographic area.

Leave system manual with homeowner.

Explain system operation and maintenance procedures outlined in

User’s Manual.

Storage Failure (SF) Errors—Occur when Comfort Zone con-

troller detects and replaces faulty data contained within its memory

with factory selected default values.

Transparent Errors—Occur when Comfort Zone controller de-

tects a system or zone operating problem.

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Table 11—Toggle Summary

TOGGLE SETTING

OFF

DEFAULT

Timeguard delay is 30 sec, overrides 5-minute delay be-

tween de-energizing and re-energizing HVAC stages. This

option automatically returns to OFF after 30 sec timeout. If

equipment has been shut down due to a leaving air tem-

perature trip, the timeguard override has no effect.

Time delay is standard 5 minutes be-

tween de-energizing and re-energizing

HVAC stages.

(T1)-Timeguard Override

OFF

Temperature and setpoints are displayed

in Fahrenheit degrees.

(T2)-Celsius Display

(T3)-2400 Baud Rate

(T4)-Error Code Display

Temperature and setpoints are displayed in Celsius degrees.

OFF

Communication baud rate is 2400.

Communications baud rate is 4800.

Non-critical errors are displayed.*; when set to ON both

SF/HF errors are displayed.

Only critical errors are displayed.

The system broadcasts the time on communication bus with The system does not broadcast time or

(T5)-Enable Broadcast

every scan.

outside air temperatures on bus.

Heat Pump mode

First-stage heat pump will energize Y1 to turn compressor

on.

No heat pump operation. Used for electric

heat or gas furnace. W1 will be energized

for heat.

OFF

(T6)-Heat Pump Operation

The system assumes that an outside air temperature sensor

is attached and will broadcast outside air temperature on

communication bus if enable broadcast is turned on.

The outside air temperature sensor is not

attached.

(T7)-Outside Air Temperature

(T8)-Comfort Trend Staging

(T9)-Auto Fan Off For Heat

OFF

The system will energize the second stage only if zone de-

mand exceeds 2˚F and the zone temperature has not im-

proved at least 0.1˚F for 6 minutes. The 6 minute timer is

reset if the zone temperature trend is improving.

A 2˚F demand alone will energize the

second stage after timeguard between

stages has been satisfied.

When the fan switch is set to AUTO, the system will not en-

ergize the fan during heat modes. This allows the equipment

to control fan operation for proper heat exchanger warm-up.

The fan relay is energized during heating

and cooling.

OFF

The system will check leaving air temperature (measured by

the duct sensor) for excessive heating and cooling limits.

Cool limits are fixed at 50˚ F (second-stage cool de-

Operates the same as ’ON’ position, but

dampers will not modulate open in a LAT

(T10)-High/Low Temperature Limits

energized) and 45˚ F (first-stage cool de-energized). Heating trip.

limits are programmable between 105˚/110˚ to 155˚/175˚F.

Rotary switch positions 1 through 7 and S on controller dis-

play will display dashes.

(T11)-Installer Switch Lockout

All switch positions operate normally.

OFF

The outside air damper is forced to a minimum position of 2 The outside air damper is set to the posi-

when fan is on.

(T12)-Force Outside Air Ventilation

tion the system requests.

The system assumes a smart sensor is attached to zone 2.

The 4 zone controller will read zone temperature and set-

points for zone 2 via the 3-wire communication bus at 1 ad- the remote room sensor.

dress below controller.

The system reads zone 2 temperature via

(T13)-Smart Sensor Attached For Zone 2

(T14)-Smart Sensor Attached For Zone 3

(T15)-Smart Sensor Attached For Zone 4

OFF

The system assumes a smart sensor is attached to zone 3.

The 4 zone controller will read zone temperature and set-

points for zone 3 via the 3-wire communication bus at 2 ad- the remote room sensor.

dresses below controller.

The system reads zone 3 temperature via

The system assumes a smart sensor is attached to zone 4.

The system reads zone 4 temperature via

the remote room sensor.

The 4 zone controller will read zone temperature and set-

points for zone 4 via the 3-wire communications bus at 3

addresses below controller.

(T16)-Zone 2 Active

(T17)-Zone 3 Active

(T18)-Zone 4 Active

Zone 2 is being used.

Zone 2 is not being used.

Zone 3 is not being used.

Zone 4 is not being used.

Zone 3 is being used.

Zone 4 is being used.

The system will use outside air as first-stage cooling and

mechanical cooling as second stage. When outside air tem- The system will use only mechanical

(T19)-Economizer

OFF

perature drops below 65˚ F, damper will modulate 10 per-

cent open. Full open in cooling.

cooling.

The controller display will alternate between setpoints and

zone temperatures.

The controller display will continuously

show setpoints.

(T20)-Enable Alternate Display

OFF

The system will operate fifth motorized damper as an out-

side air damper.

The system will operate fifth motorized

damper as a motorized bypass damper.

(T21)-Outside Air Damper Attached

The system will re-evaluate demand while still in a mode. If

simultaneous demand exists and demand for opposite mode The system will not change modes until

(T22)-System Mode Reselect

OFF

exceeds demand for current mode for 20 minutes the sys-

tem will change modes.

current mode has been satisfied.

The system will report a transparent error when any zone

cannot be maintained within 5˚ F for longer than 20 minutes.

(T23)-System Error Checking

(T24)-50 Hz Operation

The system will not report error.

OFF

The system will be set to operate using

60 hz power source.

The system will be set to operate using 50 hz power source.

Damper position will not go below mini-

mum damper position, which is set as S5,

even when the duct temperature is too

cold or too hot.

When duct temperature is below 65˚F or above 80˚F damper

will go fully closed, i.e., below minimum damper position in

order to avoid over conditioning zone.

(T25)-Ventilation Mode

OFF

Y2 will be used to turn on second stage of a 2-stage com-

pressor in a heat pump system.

(T26)-Two Stage Heat Pump

(T27)-Dx Sensor for LAT Checking

(T28)-Cool Without Fan

Second-stage operation will be canceled.

Dx Sensor is ignored for LAT checking.

OFF

Dx Sensor will be LAT checked in addition to Duct Tempera-

ture Sensor. (T-10 must also be on)

The fan will not be energized. The cooling equipment must

provide a way to turn fan on.

The fan relay is energized anytime there

is a cooling demand.

* Pressing any setpoint button when a hardware error exists causes a reset if in a run position.

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Table 12—Operating Problems

SYMPTOM

POSSIBLE CAUSE

Thermostat is not receiving power.

1. Verify that comfort zone center is receiving 24 vac. (50 va minimum required with 4 motorized

dampers, 5 va for each additional motorized damper.)

2. Check that the thermostat is receiving a steady 10 VDC across the red and white wires at the

system controller terminal block on the comfort zone, I/O board, and on the Red/White terminals

on the base plate of the 4 zone controller.

No Display

Low voltage.

1. Verify that the comfort zone center is receiving 24 vac. (50 va minimum required with motorized

dampers, 5 va for each additional motorized damper.)

2. Check that the thermostat is receiving a steady 10 VDC across the red and white wires at the

system controller terminal block on the comfort zone, I/O board, and on the red/white terminals

on the base of the 4 zone controller.

Blinking Temperature Display

3. Check that the yellow or blue wires are connected properly and not broken at the system control-

ler terminal block on the comfort zone I/O board and on the yellow/blue terminal on the base of

the 4 zone controller.

4. Verify that the terminals are properly installed on the base plate of the controller.

5. Wiring connector block for smart sensor could be defective.

1. Check to see if high/low temperature trip limits have been exceeded.

2. Temperature sensor is improperly wired or defective.

Blinking HEAT or COOL Annunciator

Cooling or Heating is Requested But 1. Must have at least 1 zone with a demand greater than 1.5° F from setpoints.

The HEAT or COOL Annunciator is

not displayed

2. Check system switches. They must be set to AUTO or ON to operate.

3. Have you waited for timeguard (5 minutes) to expire?

1. Check that the LEDs on the CHR06 relay pack are indicating the correct relay is closed. If not,

check for a bad relay.

2. Measure voltage across common (red) and any de-energized relay. Voltage should be 24 vac.

3. Apply 24 vac directly across relay.

COOL or HEAT Annunciator is Lit

But Cool or Heat is Not On

1. Verify that there are no obstructions binding the damper blade or shaft.

2. Check for 24 vac across common and either the open or close terminals.

3. Check stop switch. If defective, replace actuator.

4. Verify that motor is operating correctly.

Damper Will Not Open or Close

5. Check damper fuse.

1. Make sure bypass damper is working properly.

2. Verify that duct work is properly sized.

System is Too Noisy

1. Check for drafts.

2. Use shielded cable.

Unstable Temperature Readings

1. Make sure that the sensor wire is not run in parallel with any wires carrying AC voltage.

2. Disconnect all other sensors from the comfort zone I/O board and check to see if the sensor

reading is still fluctuating.

3. Disconnect all other sensors from the comfort zone panel and check to see if the problem still

exists.

4. Disconnect the 4 zone controller and re-wire it directly to the I/O board with a separate

5-conductor cable.

5. If all sensors are still fluctuating, replace the 4 zone controller.

6. If only 1 sensor is fluctuating, disconnect that sensor from the I/O board and re-wire it directly to

the I/O board using a separate 2-conductor cable.

Room Sensors Fluctuating

7. If the sensor still has the problem, replace the I/O board.

8. Verify if shielded or non-shielded cable is being used.

9. If shielded, follow through the remaining steps. If non-shielded, go to No. 6.

10. Verify that the shield is connected to the comfort zone panel and that the panel is properly

grounded to the chassis.

11. Remove the shield wire and check to see if the problem still exists.

12. Verify that the shield wire has been clipped off at the sensor end and is not touching any other

wires or any exposed metal.

13. Ensure that there is a solid electrical ground on the electric power box.

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Table 13—Storage Failure Errors

Error Display (Dial Position T4) must be turned on.

SF ERROR CODE

DESCRIPTION

SOLUTION

Temperature Programming Error

Time Period Programming Error

Reprogram the scheduled temperatures.

Reprogram the scheduled time periods.

1. Turn selection dial to position 2.

2. Change temperature value.

3. Return selection dial to any run mode position. Valid temperature range = 30°—180°F.

Zone 1 Temperature Calibration Out

of Range

1. Turn selection dial to position 3.

2. Change temperature value.

3. Return selection dial to any run mode position. Valid temperature range = 30°—180°F.

Zone 2 Temperature Calibration Out

of Range

1. Turn selection dial to position 4.

2. Change temperature value.

3. Return selection dial to any run mode position. Valid temperature range = 30°—180°F.

Zone 3 Temperature Calibration Out

of Range

1. Turn selection dial to position 5.

2. Change temperature value.

3. Return selection dial to any run mode position. Valid temperature range = 30°—180°F.

Zone 4 Temperature Calibration Out

of Range

1. Turn selection dial to position 6.

2. Change temperature value.

3. Return selection dial to any run mode position. Valid temperature range = 30°—180°F.

Duct Temperature Calibration Out of

Range

1. Turn selection dial to position 7.

2. Change temperature value.

3. Return selection dial to any run mode position. Valid temperature range = 30°—120°F.

Outside Temperature Calibration Out

of Range

1. Turn selection dial to position 8.

2. Change temperature value.

3. Return selection dial to any run mode position. Valid temperature range = 30°—180°F.

Dx Coil Temperature Calibration Out

of Range

1. Turn selection dial to position S.

2. Select variable number 6.

3. Enter a new value.

LAT Error

4. Return selection dial to any run mode position.

1. Turn selection dial to position S.

2. Verify correct address of the 4 zone controller is as shown in the Programming and Operation

Section.

Device Address Error

3. Verify smart sensor address(es) are as shown in the Programming and Operation Section.

1. Turn selection dial to position T2, T11, T12, T18, T20, T22, and T24.

2. Check and correct the configuration.

3. Return selection dial to any run mode position.

Configuration Error

1. Turn selection dial to position T4, T5, T6, T13, and T17.

2. Check and correct the configuration.

3. Return selection dial to any run mode position.

1. Turn selection dial to position T7, T8, T9, T10, T19, T21, T23, and T25.

2. Check and correct the configuration.

3. Return selection dial to any run mode position.

1. Turn selection dial to position T26 and T27.

2. Check and correct the configuration.

3. Return selection dial to any run mode position.

Configuration Error

Push HOLD button on/off.

1. Turn the error display T4 off.

2. Change any setpoint.

3. Turn the error display T4 on.

4. Return selection dial to any run mode position.

Current Setpoints

1. Turn the error display T4 off.

2. Turn the selection dial to Vacation.

3. Change any setpoint.

Vacation Setpoints

4. Turn the error display T4 on.

5. Return selection dial to any run mode position.

1. Turn selection dial to position S.

Maximum/Minimum Temperature Set-

points

2. Change the maximum cooling setpoint (S2). Must be outside 14° range.

3. Change the minimum heating setpoint (S3). Must be outside 14° range.

4. Return selection dial to any run mode position.

1. Turn the selection dial to position S.

Maximum/Minimum Damper Ventila-

tion

2. Change the maximum damper position (S4). Default = 15.

3. Change the vent damper position (S5). Default = 0.

4. Return selection dial to any run mode position.

1. Turn the selection dial to position 1.

Bypass Damper Total

Baud Rate

2. Re-program bypass damper pressure relief limit according to instructions on Programming Sec-

tion.

1. Turn selection dial to position T1.

2. Toggle the baud rate twice (T3).

3. Return selection dial to any run mode position.

1. Turn selection dial to position S7.

2. Change the value.

Dual Fuel Trip Temperature Error

3. Return selection dial to any run mode position.

1. Turn selection dial to position 9.

2. Set base temperatures. Do not overlap with 14° maximum cooling/minimum heating set point

range.

Base Temperatures Error

3. Return selection dial to any run mode position.

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Table 14—Hardware Failure Errors

Error Display (Dial Position T4) must be turned on.

HF ERROR CODE

DESCRIPTION

SOLUTION

Bad sensor, shorted or open.

1. Check wiring and sensor.

Zone 1 Temperature Sensor

2. Replace failed sensor, if necessary. Valid temperature range = 30°—180°F.

Bad sensor, shorted or open.

Zone 2 Temperature Sensor

Zone 3 Temperature Sensor

Zone 4 Temperature Sensor

Duct Temperature Sensor

Outside Air Temperature Sensor

Dx Coil Sensor

1. Check wiring and sensor.

2. Replace failed sensor, if necessary. Valid temperature range = 30°—180°F.

Bad sensor, shorted or open.

1. Check wiring and sensor.

2. Replace failed sensor, if necessary. Valid temperature range = 30°—180°F.

Bad sensor, shorted or open.

1. Check wiring and sensor.

2. Replace failed sensor, if necessary. Valid temperature range = 30°—180°F.

Bad sensor, shorted or open.

1. Check wiring and sensor.

2. Replace failed sensor, if necessary. Valid temperature range = 30°—180°F.

Bad sensor, shorted or open.

1. Check wiring and sensor.

2. Replace failed sensor, if necessary. Valid temperature range = -30°—120°F.

Bad sensor, shorted or open.

1. Check wiring and sensor.

2. Replace failed sensor, if necessary. Valid temperature range = 30°—180°F.

Controller can not communicate on bus.

1. Check 3-wire bus between controller and comfort zone center.

2. Replace faulty controller/center boards, if necessary

Bus Access Error

Cannot communicate with zone 2 smart sensor.

1. Turn toggle 13 off if there is no smart sensor attached to zone 2.

2. Check wiring between sensor and comfort center.

3. Verify correct address.

Zone 2 Smart Sensor

Zone 3 Smart Sensor

Zone 4 Smart Sensor

4. Must be addressed 1 less than 4 zone controller’s address.

Cannot communicate with zone 3 smart sensor.

1. Turn toggle 14 off if there is no smart sensor attached to zone 3.

2. Check wiring between sensor and comfort center.

3. Verify correct address.

4. Must be addressed 2 less than 4 zone controller’s address.

Cannot communicate with zone 4 smart sensor.

1. Turn toggle 15 off if there is no smart sensor attached to zone 4.

2. Check wiring between sensor and comfort center.

3. Verify correct address.

4. Must be addressed 3 less than 4 zone controller’s address.

Clock Not Ready

No correction possible.

Parker Custom Chip Not Ready

Non-Volatile RAM Not Ready

No correction possible. Fatal error.

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STANDARD

SINGLE SPEED

AIR CONDITIONER

STANDARD

SINGLE SPEED

AIR CONDITIONER

COMFORT ZONE SYSTEM

FAN COIL

COMFORT ZONE SYSTEM

FAN COIL

Red

UNIT 24 VAC (R)

Yellow

COOL 1 (Y1)

COOL 2 (Y2)

HEAT 1 (W1)

HEAT 2 (W2)

FAN (G)

COOL 1 (Y1)

COOL 2 (Y2)

HEAT 1 (W1)

HEAT 2 (W2)

FAN (G)

Blue

White

Brown

Green

Orange

Black

Y/Y2

White

Brown

Green

Orange

Black

RV-COOL (O)

RV-HEAT (O)

RV-COOL (O)

RV-HEAT (O)

A93227

A93296

2-SPEED

AIR CONDITIONER

(38TD)

2-SPEED

AIR CONDITIONER

(38TD)

COMFORT ZONE CENTER

FAN COIL

COMFORT ZONE CENTER

FAN COIL

Red

UNIT 24 VAC (R)

Yellow

COOL 1 (Y1)

COOL 2 (Y2)

HEAT 1 (W1)

HEAT 2 (W2)

FAN (G)

COOL 1 (Y1)

COOL 2 (Y2)

HEAT 1 (W1)

HEAT 2 (W2)

FAN (G)

Blue

White

Brown

Green

Orange

Black

White

Brown

Green

Orange

Black

RV-COOL (O)

RV-HEAT (O)

RV-COOL (O)

RV-HEAT (O)

A94033

Latent Capacity Control (LCC)

R1 = Relay DPST, Pilot Duty,

24-v coil (HN61KK324) or Equivalent.

H = Humidistat, opens on humidity

rise (HL38MG026)

A94032

Fig. 19—Typical Wiring Diagrams (Fan Coil with Air Conditioner)

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2-SPEED

AIR CONDITIONER

(38TD)

COMFORT ZONE CENTER

FAN COIL

Red

UNIT 24 VAC (R)

Yellow

COOL 1 (Y1)

COOL 2 (Y2)

HEAT 1 (W1)

HEAT 2 (W2)

FAN (G)

Blue

White

Brown

Green

Orange

Black

Y/Y2

RV-COOL (O)

RV-HEAT (O)

A94034

Fig. 19—Typical Wiring Diagrams (Fan Coil with Air Conditioner) Continued

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STANDARD

SINGLE SPEED

AIR CONDITIONER

STANDARD

SINGLE SPEED

AIR CONDITIONER

COMFORT ZONE CENTER

VARIABLE SPEED

COMFORT ZONE CENTER

FURNACE

Red

UNIT 24 VAC (R)

Yellow

COOL 1 (Y1)

COOL 2 (Y2)

HEAT 1 (W1)

HEAT 2 (W2)

FAN (G)

COOL 1 (Y1)

COOL 2 (Y2)

HEAT 1 (W1)

HEAT 2 (W2)

FAN (G)

Blue

White

Brown

Green

Orange

Black

White

Brown

Green

Orange

Black

RV-COOL (O)

RV-HEAT (O)

RV-COOL (O)

RV-HEAT (O)

A93220

(KGATT0101VSP)

RELAY

COIL

Black

NOTE: Put set-up Switch

(P5)

No. 2 at the control

board to the ON

CONNECTION AT

CONTROL BOARD

position (up) when using

Two Stage Relay Kit

KGATT0101VSP

Accessory (Optional)

A93219

STANDARD

SINGLE-SPEED

AIR CONDITIONER

2-SPEED

AIR CONDITIONER

(38TD)

COMFORT ZONE CENTER

VARIABLE SPEED

FURNACE

COMFORT ZONE CENTER

FURNACE

Red

UNIT 24 VAC (R)

Red

Yellow

UNIT 24 VAC (R)

COOL 1 (Y1)

COOL 2 (Y2)

HEAT 1 (W1)

HEAT 2 (W2)

FAN (G)

Yellow

Blue

COOL 1 (Y1)

COOL 2 (Y2)

HEAT 1 (W1)

HEAT 2 (W2)

FAN (G)

Blue

White

Brown

Green

Orange

Black

White

Brown

Green

Orange

Black

Y/Y2

W/W1

RV-COOL (O)

RV-HEAT (O)

RV-COOL (O)

RV-HEAT (O)

NOTE: Locking furnace into "low fire" may help prevent over conditioning

in the heating mode. This will allow the furnace to stage between

low and high fire. Before using this feature read furnace Installation

Instructions for two-stage operation. Connect "W2" from the

Comfort Zone Center to "W2" on the furnace control board.

A94036

See Furnace Installation Instructions For Details Involving

Set-Up Switch Configuration and Two-Stage Furnace Operation.

A94035

Fig. 20—Typical Wiring Diagrams (Furnace with Air Conditioner)

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2-SPEED

AIR CONDITIONER

(38TD)

2-SPEED

AIR CONDITIONER

(38TD)

COMFORT ZONE CENTER

VARIABLE SPEED

COMFORT ZONE CENTER

FURNACE

Red

UNIT 24 VAC (R)

Yellow

COOL 1 (Y1)

COOL 2 (Y2)

HEAT 1 (W1)

HEAT 2 (W2)

FAN (G)

COOL 1 (Y1)

COOL 2 (Y2)

HEAT 1 (W1)

HEAT 2 (W2)

FAN (G)

Blue

White

Brown

Green

Orange

Black

White

Brown

Green

Orange

Black

RV-COOL (O)

RV-HEAT (O)

RV-COOL (O)

RV-HEAT (O)

NOTE: Put set-up switch No. 2

at the control board to

the ON position (up)

when using Two Stage

Relay Kit

(KGATT0101VSP)

RELAY

Black

KGATT0101VSP

COIL

Accessory (Optional).

(P5)

CONNECTION AT

CONTROL BOARD

A94037

Latent Capacity Control (LCC)

R1 = Relay DPST, Pilot Duty,

24-v coil (HN61KK324) or Equivalent.

H = Humidistat, opens on humidity

rise (HL38MG026)

A94038

2-SPEED

AIR CONDITIONER

(38TD)

COMFORT ZONE CENTER

FURNACE

Red

UNIT 24 VAC (R)

2-SPEED

Yellow

AIR CONDITIONER

(38TD)

FURNACE

COOL 1 (Y1)

Blue

COOL 2 (Y2)

COMFORT ZONE CENTER

White

HEAT 1 (W1)

Brown

Red

HEAT 2 (W2)

UNIT 24 VAC (R)

Green

Yellow

FAN (G)

COOL 1 (Y1)

COOL 2 (Y2)

HEAT 1 (W1)

HEAT 2 (W2)

FAN (G)

Orange

Blue

RV-COOL (O)

Black

White

Brown

Green

Orange

Black

Y/Y2

W/W1

RV-HEAT (O)

RV-COOL (O)

RV-HEAT (O)

NOTE: Locking furnace into "low fire" may help prevent over conditioning

in the heating mode. This will allow the furnace to stage between

low and high fire. Before using this feature read furnace Installation

Instructions for two-stage operation. Connect "W2" from the

Comfort Zone Center to "W2" on the furnace control board.

Latent Capacity Control (LCC)

See Furnace Installation Instructions For Details Involving

Set-Up Switch Configuration and Two-Stage Furnace Operation.

A94040

R1 = Relay DPST, Pilot Duty,

24-v coil (HN61KK324) or Equivalent.

H = Humidistat, opens on humidity

rise (HL38MG026)

A94039

Fig. 20—Typical Wiring Diagrams (Furnace with Air Conditioner) Continued

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2-SPEED

AIR CONDITIONER

(38TD)

COMFORT ZONE CENTER

FURNACE

Red

UNIT 24 VAC (R)

Yellow

COOL 1 (Y1)

COOL 2 (Y2)

HEAT 1 (W1)

HEAT 2 (W2)

FAN (G)

Blue

White

Brown

Green

Orange

Black

W/W1

RV-COOL (O)

RV-HEAT (O)

Y/Y2

NOTE:

Locking furnace into

"low fire" may help

prevent over

conditioning in the

heating mode. This will

allow the furnace to

stage between low and

high fire. Before using

this feature read

furnace Installation

Instructions for two-

stage operation.

Connect "W2" from the

Comfort Zone Center

to "W2" on the furnace

control board.

Latent Capacity Control (LCC)

R1 = Relay DPST, Pilot Duty,

24-v coil (HN61KK324) or Equivalent.

H = Humidistat, opens on humidity

rise (HL38MG026)

See Furnace Installation

Instructions For Details

Involving Set-Up Switch

Configuration and Two-

Stage Furnace Operation.

A93219

Fig. 20—Typical Wiring Diagrams (Furnace with Air Conditioner) Continued

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STANDARD

SINGLE SPEED

HEAT PUMP

STANDARD

SINGLE SPEED

HEAT PUMP

COMFORT ZONE CENTER

FAN COIL

COMFORT ZONE SYSTEM

FAN COIL

Red

UNIT 24 VAC (R)

Yellow

COOL 1 (Y1)

COOL 2 (Y2)

HEAT 1 (W1)

HEAT 2 (W2)

FAN (G)

COOL 1 (Y1)

COOL 2 (Y2)

HEAT 1 (W1)

HEAT 2 (W2)

FAN (G)

Blue

White

Brown

Green

Orange

Black

White

Brown

Green

Orange

Black

Y/Y2

RV-COOL (O)

RV-HEAT (O)

RV-COOL (O)

RV-HEAT (O)

A93242

A93243

2-SPEED

HEAT PUMP

(38YD)

2-SPEED

HEAT PUMP

(38YD)

COMFORT ZONE SYSTEM

FAN COIL

COMFORT ZONE SYSTEM

FAN COIL

Red

UNIT 24 VAC (R)

Yellow

COOL 1 (Y1)

COOL 2 (Y2)

HEAT 1 (W1)

HEAT 2 (W2)

FAN (G)

COOL 1 (Y1)

COOL 2 (Y2)

HEAT 1 (W1)

HEAT 2 (W2)

FAN (G)

Blue

White

Brown

Green

Orange

Black

White

Brown

Green

Orange

Black

RV-COOL (O)

RV-HEAT (O)

RV-COOL (O)

RV-HEAT (O)

A94043

Latent Capacity Control (LCC)

R1 = Relay DPST, Pilot Duty,

24-v coil (HN61KK324) or Equivalent.

H = Humidistat, opens on humidity

rise (HL38MG026)

A94042

Fig. 21—Typical Wiring Diagrams (Fan Coil with Heat Pump)

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2-SPEED

HEAT PUMP

(38YD)

COMFORT ZONE SYSTEM

FAN COIL

Red

UNIT 24 VAC (R)

Yellow

COOL 1 (Y1)

COOL 2 (Y2)

HEAT 1 (W1)

HEAT 2 (W2)

FAN (G)

Blue

White

Brown

Green

Orange

Black

Y/Y2

RV-COOL (O)

RV-HEAT (O)

A94044

Fig. 21—Typical Wiring Diagrams (Fan Coil with Heat Pump) Continued

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STANDARD

SINGLE SPEED

HEAT PUMP

STANDARD

SINGLE SPEED

HEAT PUMP

COMFORT ZONE CENTER

VARIABLE SPEED

COMFORT ZONE CENTER

VARIABLE SPEED

FURNACE

Red

UNIT 24 VAC (R)

Yellow

COOL 1 (Y1)

COOL 2 (Y2)

HEAT 1 (W1)

HEAT 2 (W2)

FAN (G)

COOL 1 (Y1)

COOL 2 (Y2)

HEAT 1 (W1)

HEAT 2 (W2)

FAN (G)

Blue

White

Brown

Green

Orange

Black

White

Brown

Green

Orange

Black

RV-COOL (O)

RV-HEAT (O)

RV-COOL (O)

RV-HEAT (O)

(KGATT0101VSP)

RELAY

COIL

Black

(P5)

CONNECTION AT

CONTROL BOARD

R1 = Relay DPST, Pilot Duty,

24-v coil (HN61KK324)

or Equivalent.

A93234

NOTE: Put set-up Switch

No. 2 at the control

board to the ON

R1 = Relay, DPST, Pilot Duty,

24-v coil (HN61KK324)

or Equivalent.

position (up) when using

Two Stage Relay Kit

KGATT0101VSP

Accessory (Optional)

A93298

STANDARD

SINGLE SPEED

HEAT PUMP

STANDARD

SINGLE-SPEED

HEAT PUMP

COMFORT ZONE CENTER

FURNACE

COMFORT ZONE CENTER

FURNACE

Red

UNIT 24 VAC (R)

Yellow

COOL 1 (Y1)

COOL 2 (Y2)

HEAT 1 (W1)

HEAT 2 (W2)

FAN (G)

Y/Y2

Blue

COOL 2 (Y2)

White

Brown

Green

Orange

Black

W/W1

HEAT 1 (W1)

Brown

HEAT 2 (W2)

Green

FAN (G)

Orange

RV-COOL (O)

RV-HEAT (O)

Black

RV-HEAT (O)

A93235

NOTE: Locking furnace into "low fire" may help prevent over conditioning

in the heating mode. This will allow the furnace to stage between

low and high fire. Before using this feature read furnace Installation

Instructions for two-stage operation. Connect "W2" from the

Comfort Zone Center to "W2" on the furnace control board.

See Furnace Installation Instructions For Details Involving

Set-Up Switch Configuration and Two-Stage Furnace Operation.

A94045

Fig. 22—Typical Wiring Diagram (Furnace with Heat Pump)

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2-SPEED

HEAT PUMP

(38YD)

2-SPEED

HEAT PUMP

(38YD)

COMFORT ZONE CENTER

VARIABLE SPEED

FURNACE

COMFORT ZONE CENTER

VARIABLE SPEED

FURNACE

Red

UNIT 24 VAC (R)

Yellow

COOL 1 (Y1)

COOL 2 (Y2)

HEAT 1 (W1)

HEAT 2 (W2)

FAN (G)

COOL 1 (Y1)

COOL 2 (Y2)

HEAT 1 (W1)

HEAT 2 (W2)

FAN (G)

Blue

White

Brown

Green

Orange

Black

White

Brown

Green

Orange

Black

RV-COOL (O)

RV-HEAT (O)

RV-COOL (O)

RV-HEAT (O)

(KGATT0101VSP)

RELAY

COIL

Black

(P5)

CONNECTION AT

CONTROL BOARD

R1 = Relay DPST, Pilot Duty,

24-v coil (HN61KK324) or Equivalent.

A94046

NOTE: Put set-up Switch

No. 2 at the control

board to the ON

position (up) when using

KGATT0101VSP

A94047

2-SPEED

HEAT PUMP

(38YD)

Accessory (Optional)

COMFORT ZONE CENTER

FURNACE

Red

UNIT 24 VAC (R)

COOL 1 (Y1)

COOL 2 (Y2)

HEAT 1 (W1)

HEAT 2 (W2)

FAN (G)

Yellow

Blue

White

Brown

Green

Orange

Black

RV-COOL (O)

RV-HEAT (O)

Latent Capacity Control (LCC)

R1 = Relay DPST, Pilot Duty,

24-v coil (HN61KK324) or Equivalent.

H = Humidistat, opens on humidity

rise (HL38MG026)

A94048

Fig. 22—Typical Wiring Diagrams (Furnace with Heat Pump) Continued

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2-SPEED

HEAT PUMP

(38YD)

2-SPEED

HEAT PUMP

(38YD)

COMFORT ZONE CENTER

FURNACE

COMFORT ZONE CENTER

FURNACE

Red

UNIT 24 VAC (R)

Yellow

COOL 1 (Y1)

COOL 2 (Y2)

HEAT 1 (W1)

HEAT 2 (W2)

FAN (G)

COOL 1 (Y1)

COOL 2 (Y2)

HEAT 1 (W1)

HEAT 2 (W2)

FAN (G)

Blue

White

Brown

Green

Orange

Black

White

Brown

Green

Orange

Black

Y/Y2

W/W1

RV-COOL (O)

RV-HEAT (O)

RV-COOL (O)

RV-HEAT (O)

NOTE: 38YD – with dual fuel, use the 38YD “Furnace Interface” and

“Balance Point” feature on the heat pump control to operate

dual fuel option. Configure the 4-Zone controller to act as

if it were controlling a single speed heat pump. Turn (T-6) ON.

Turn (T-9 & T-26) OFF. Set (S-7) to 0. (Let the 38YD perform

the dual fuel optimization).

In addition, lock furnace into “low fire”. This may help prevent over

conditioning during the back-up heat (furnace) mode. This will also

allow the furnace to stage between low and high fire. Before using

this feature read furnace Installation Instructions for two-stage

operation. Connect “W2” from the Comfort Zone Center to “W2” on

the furnace control board.

Latent Capacity Control (LCC)

See Furnace Installation Instructions For Details Involving

Set-Up Switch Configuration and Two-Stage Furnace Operation.

R1 = Relay DPST, Pilot Duty,

38YDA – with dual fuel, same as above, however in addition if

(T-26) is turned “ON”, and stage 2 latch pot is set to zone position,

4 stages of heat are possible.

24-v coil (HN61KK324) or Equivalent.

H = Humidistat, opens on humidity

rise (HL38MG026)

A94049

See Heat Pump Installation Instructions For Details Involving

Two-Speed Configuration and Operation.

A94312

Fig. 22—Typical Wiring Diagrams (Furnace with Heat Pump) Continued

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Comfort Zone Configuration Table

FACTORY

RECORD

JOB SETTING

TOGGLE

DESCRIPTION

DEFAULT

OFF

Timeguard Override

Celsius Temperature Display

2400 Baud Rate

Error Code Display

Enable Broadcast

Heat Pump Operation

Outside Air Temp Sensor Attached

Comfort Trend Setting

Auto Fan Off For Heat

High/Low Temperature Limits

Installer Switch Lockout

Force Outside Air Ventilation

Smart Sensor Attached For Zone 2

Smart Sensor Attached For Zone 3

Smart Sensor Attached For Zone 4

Zone 2 Active

OFF

T10

T11

T12

T13

T14

T15

T16

T17

T18

T19

T20

T21

T22

T23

T24

T25

T26

T27

T28

SETTING

S-1

S-2

S-3

S-4

S-5

S-6

S-7

ROTARY

OFF

Zone 3 Active

Zone 4 Active

Economizer

OFF

Alternating Display

Outside Air Damper Attached

System Mode Reselect

System Error Checking

50 Hz Operation

Ventilation Mode

Two-Stage Heat Pump

Dx Sensor For LAT Checking

Cool Without Fan

4 Zone Controller Bus Address

Max Cooling Setpoint

Min Heating Setpoint

Max Damper Position

Ventilation Damper Position

High Temp Trip Limit

105

Dual Fuel Setpoint

Base Temp Setpoint Scale

Calibrate Dx Coil Sensor

Calibrate Outside Air Temp Sensor

Calibrate Duct Temperature Sensor

Calibrate Zone 4 Temp Sensor

Calibrate Zone 3 Temp Sensor

Calibrate Zone 2 Temp Sensor

Calibrate Zone 1 Temp Sensor

Damper Service Position

zonekt4c

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Book

Tab 3a 5a 2a 5a

PC 101

Catalog No. 809-568

Printed in U.S.A.

Form ZONEKIT4-1SI

Pg 32

7-95

Replaces: 920415-3SI

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