Y8196A (T8196AThermostat/
Q682A Subbase) Heating/Cooling New
Construction Thermostat/Subbase
Package—Installation Instructions
Assure power is off to the heating, cooling, or heating/
cooling system at the main fuse panel. Most buildings have
Preparation
a separate switch box or circuit breaker for disconnecting
Check thermostat and subbase suitability for the heat-
power to the heating and cooling (if applicable) equipment.
ing, cooling, or heating/cooling system. Refer to Table 1.
This thermostat is compatible with virtually all heating,
Assemble tools required: flat bladed screwdriver, hand
cooling or heating/cooling systems. Refer to Table 1 for
or power drill with 3/16-in. drill bit, wire cutter/stripper or
additional thermostat compatibility information.
sharp knife, bubble level or plumb bob and line.
TABLE 1—THERMOSTAT AND SYSTEM COMPATIBILITY.
Type of Heating System
to be Controlled
Conditions/Compatibility
Electric (Line Voltage)—typical baseboard and
radiant
•
•
•
The R8239D1015 Isolating Relay or R841 Silent Switching
Center must be installed in the thermostat control circuit.a
Gas—Direct Spark Ignition (DSI), Intermittent
Pilot (IP), and Standing Pilot (SP)
Compatible.
Heat Pump
Compatible. Assure correct subbase identity is selected for fan
control and changeover control (O terminal for cool and B
terminal for heat). Jumper Y to W for heat pump compressor
control.
Hot Water Zone
•
•
Honeywell 2-wire valves are compatible.
Some non-Honeywell 2-wire valves require an R8239D1015
Isolating Relay in the thermostat control circuit.a
Some 3-wire valves require an R8239A1052 Isolating Relay
in the thermostat control circuit.a, b
•
Oil
•
Compatible.
Vent Damper
•
•
Honeywell damper motors are compatible.
Some non-Honeywell damper motors require an R8239D1015
Isolating Relay in the thermostat control circuit.a Check
control amperage requirement.
Warm Air Zone
•
Most are compatible.
a If thermostat is not compatible with the system being controlled, the system will not operate. No hazard exists. The thermostat
will not be damaged unless it is used to directly control a line voltage system. A Honeywell R841 or R8239D1015 Isolating
Relay must be added to the thermostat control circuit for proper system operation.
b Consult manufacturer for installation requirements.
Recycling Notice
This control contains mercury in a sealed tube. Do not
place control in the trash at the end of its useful life.
If this control is replacing a control that contains mer-
cury in a sealed tube, do not place your old control in the
trash.
Contact your local waste management authority for
instructions regarding recycling and the proper disposal of
this control, or of an old control containing mercury in a
sealed tube.
• Form Number 69-0637—2
D. F. • Rev. 12-94 • ©Honeywell Inc. 1994 •
M3375
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Outlet Box Mounting (Fig. 4)
Fig. 3—Leveling methods for subbase.
Use a horizontally mounted outlet box if possible. If a
vertical outlet box is used, the subbase must be mounted on
a 202689A Cover Plate Assembly (ordered separately).
Follow the instructions provided with the cover plate as-
sembly.
SPIRIT LEVEL
Align the subbase mounting holes on the outlet box and
loosely fasten with the two screws.
Carefully level the subbase (Fig. 3) and firmly tighten
the screws.
PLUMB
LINE
O
B
R
G
W
Y
PLUMB
BOB OR
WEIGHT
FAN
COOL
ON
AUTO
HEAT
OFF
M1555
Fig. 4—Mounting subbase on outlet box.
VERTICAL
OUTLET
1
BOX
EXISTING
HORIZONTAL
OUTLET BOX
2
COVER
PLATE
ADAPTER
RING
2
O
B
R
W
HEATING/
COOLING
SUBBASE
W
R
G
G
Y
FAN
COOL
ON
AUTO
HEAT
OFF
SUBBASE OR
WALLPLATE
MOUNTING
SCREWS (2)
M1553A
1
2
NOT INCLUDED WITH UNIT.
M1554A
ACCESSORY PARTS AVAILABLE.
WIRE SUBBASE
Connect the wires to corresponding terminals on the
subbase.
If labels do not agree with your new subbase, refer to
Table 2 or Fig. 11.
Follow the instructions provided by the heating, cool-
ing, or heating/cooling equipment manufacturer. If not
available, refer to the Typical Wiring Diagrams section at
the end of this publication.
Disconnect the power supply before making wiring con-
nections to prevent electrical shock or equipment damage.
TABLE 2—TERMINAL DESIGNATIONS.
Subbase
NOTE: All wiring must comply with local electrical codes
and ordinances.
Terminal
Control Function
Control transformer power.
Heating control circuit.
R
W
Y
Refer to Fig. 5 and strip thermostat wire insulation as
necessary.
Cooling control circuit (jumper to W for
heat pump compressor control).
Fig. 5—Methods of connecting terminals.
G
O
Fan control circuit.
FOR STRAIGHT
CONNECTION—
STRIP 5/16 in. [8 mm]
Cooling damper or changeover/reversing
valve, makes continuously in cool.
B
Heating damper or changeover/reversing
valve, makes continuously in heat.
FOR WRAPAROUND
BARRIER
CONNECTION—
STRIP 7/16 in. [11 mm]
Push excess wire back into the wall.
Plug the hole in the wall with nonhardening caulk, putty,
or nonflammable insulation to prevent drafts from affect-
ing thermostat operation.
M1556B
3
69-0637—2
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MOUNT THE THERMOSTAT
SET TIMER
Note the tabs on the top inside edge of the thermostat
base. These tabs fit the slots molded into the top of the
subbase.
Adjust the timer by moving the knob clockwise
Do NOT reverse the knob.
.
When time is correctly set, the time indicator arrow
(Fig. 8) must point to the corresponding daytime (light) or
nighttime (dark) portion of the program dial.
Hang thermostat base on subbase.
Insert the two captive mounting screws located in the
bottom corners of the base (Fig. 6).
Firmly tighten the screws.
Fig. 8—Set timer.
Fig. 6—Thermostat mounting.
PROGRAM
PINS (4)
SEE OWNER'S
MANUAL FOR
DETAILS
TAB (2)
TIMER
SETTING
KNOB
MOUNTING SLOT (2)
TIME
INDICATOR
ARROW
1
M5161
35
30
25
20
10
ATTACH THERMOSTAT COVER
Make sure the packing inserts in the thermostat base are
removed.
Place the two tabs on the upper edge of the cover into the
mounting slots in the thermostat base (Fig. 9).
Swing the cover downward until it catches at the bottom
of the base.
CAPTIVE
MOUNTING SCREWS
WALLPLATE
OR SUBBASE
THERMOSTAT
BASE
M8674
INSERT TIMER BATTERIES
Power is supplied to the timer by two AAA alkaline
batteries (not included).
Fig. 9—Attach cover.
Install the batteries in the thermostat (Fig. 7).
Once a year or when batteries are dead, replace with two
new AAA alkaline batteries. We recommend Energizer®
batteries.
50
60
70
80
Fig. 7—Insert timer batteries.
BATTERY LOCATION FOR
(2) AAA BATTERIES;
INSTALL WITH POSITIVE
ENDS UP
M8604
SET TEMPERATURE CONTROL LEVERS
The two levers on top of thermostat control the low and
high temperatures for energy savings and comfort control
(Fig. 10). The lever on the left (blue mark) controls the
lower temperature. The lever on the right (red mark) con-
trols the higher temperature.
We recommend pushing the levers together at an appro-
priate temperature for either heat or cool until the occupant
programs the thermostat and makes the final temperature
selections.
M8585
69-0637—2
4
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HEATING/COOLING SYSTEM
Fig. 10—Temperature control levers.
Turn on power to the furnace and cooling system.
Place the system switch lever to HEAT and fan switch
lever to AUTO.
LOW TEMPERATURE
(BLUE MARK)
SET LEVER
HIGH TEMPERATURE
(RED MARK)
SET LEVER
Push both temperature setting levers together at least
5°F (3°C) above room temperature. The main burner should
come on. The fan will start when the furnace heats up. (If
central electric heat or heat pump system, fan starts imme-
diately.)
70
60
80
50
Move both levers 5°F (3°C) below room temperature.
The burner should shut off.
Place the system switch lever at COOL and the fan
switch lever at AUTO. The cooling equipment should
operate, and the fan will start. Allow for any time delay that
may be built into the compressor control circuit.
M859
SET SUBBASE SWITCHES
The subbase system switch controls system operation as
follows:
HEAT: Heating system is controlled by the thermostat.
Cooling system is off.
NOTE: To avoid compressor damage, do not operate the
system if outdoor temperature is below 50°F (10°C).
Refer to manufacturer recommendations.
COOL: Cooling system is controlled by the thermostat.
Heating system is off.
OFF: Both the heating and cooling systems are off. If the
fan switch is in the AUTO position, the fan is also off.
Move both temperature setting levers together at least
5°F (3°C) above room temperature. The cooling equipment
should shut off.
Place the fan switch to ON. The fan should run continu-
ously with the system switch in any position.
Place the system switch to OFF. Move both temperature
setting levers to various positions. The heating and cooling
systems should not operate.
Operate the entire system for at least one complete cycle
with the system switch at COOL and one complete cycle
with the switch at HEAT.
If thermostat fails any test, refer to the Troubleshooting
Guide in the Owner’s Manual.
The subbase fan switch controls fan operation as follows:
ON: Fan operates continuously.
AUTO: Fan operates with the cooling equipment as
controlled by the thermostat or with the heating equip-
ment as controlled by the plenum switch. In electric
heat, heat pump and fan coil systems, the fan is
controlled by the thermostat in heating and cooling.
To switch positions, use thumb or index finger to slide
lever to the desired position. Switch lever must stop in
detent over the desired function indicator mark for proper
circuit operation.
Reset both temperature setting levers to the desired
temperatures.
Leave Owner’s Manual and Assistance Information in a
convenient place for the building occupant or provide with
other appliance manuals.
CHECK OUT THERMOSTAT OPERATION
CAUTION
TYPICAL WIRING DIAGRAMS
For wiring, follow the hookup diagram supplied with
your heating, cooling or heating/cooling equipment. If not
available, use Fig. 11 as a guide.
Do NOT check operation by shorting across
terminals of relay or valve coil; this will burn
out the thermostat heat anticipator.
REMEMBER: Your wiring must follow local electrical
codes and ordinances.
5
69-0637—2
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Fig. 11—Typical hookup for Y8196A Package (T8196A Thermostat/Q682A Subbase) in heating/cooling
system.
TIMER
C
C
H
H
FILTER
LIGHT
THERMOSTAT
FALL
FALL
HEAT
ANTICIPATOR
HEAT
ANTICIPATOR
2
BATTERIES
COOL
ANTICIPATOR
SYSTEM
SWITCH
SUBBASE
FAN
SWITCH
SWITCH
R
O
G
W
B
Y
3
REVERSING
VALVE/
HEATING
DAMPER
REVERSING
VALVE/
COOLING
DAMPER
FAN
RELAY
HEAT
RELAY
COMPRESSOR
CONTACTOR
1
L1
(HOT)
L2
1
2
3
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
REMOTE INDICATION FOR FILTER OPTIONAL.
JUMPER W TO Y FOR HEAT PUMP COMPRESSOR CONTROL.
M2386A
Automation and Control Solutions
Honeywell International Inc.
1985 Douglas Drive North
Golden Valley, MN 55422
Honeywell Limited—Honeywell Limitée
35 Dynamic Drive
Scarborough, Ontario M1V 4Z9
69-0637—2
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