Carrier Heat Pump GT G User Manual

GEOTHERMAL SPLIT SYSTEMS

CARRIER

INDOOR & OUTDOOR SPLIT GEOTHERMAL

HEATING AND COOLING COMFORT SYSTEMS

GT-PX INDOOR SPLIT (50YDS) SERIES - SIZES 026-064

GT-G INDOOR SPLIT (50YCS) SERIES - SIZES 018-060

GT-S OUTDOOR SPLIT (38WQS) SERIES - SIZES 018-060

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Indoor & Outdoor Split

Geothermal Comfort Systems

Table of Contents

Geothermal Advantages.......................................................................................................................................................................................................................................2

Loop Systems .............................................................................................................................................................................................................................................................3

GT-PX Indoor Split (50YDS) Series Introduction .................................................................................................................................................................................4

GT-PX Indoor Split (50YDS) Series Features & Beneﬁts..................................................................................................................................................................5

GT-G Split Indoor (50YCS) Series Features & Beneﬁts.....................................................................................................................................................................8

GT-S Outdoor Split (38WQS) Series Introduction.............................................................................................................................................................................10

GT-S Outdoor Split (38WQS) Series Features & Beneﬁts..............................................................................................................................................................12

ARI/ISO/ASHRAE 13256-1 Data....................................................................................................................................................................................................................14

Model Nomenclature.............................................................................................................................................................................................................................................16

Reference Calculations & Legend...................................................................................................................................................................................................................17

GT-GS/GT-S Performance Correction Factors........................................................................................................................................................................................17

GT-PX Performance Correction Factors....................................................................................................................................................................................................18

GT-PX Performance Data...................................................................................................................................................................................................................................19

GT-GS/GT-S Performance Data.......................................................................................................................................................................................................................27

Physical Data...............................................................................................................................................................................................................................................................34

GT-PX Dimensional Data....................................................................................................................................................................................................................................35

GT-GS Dimensional Data....................................................................................................................................................................................................................................36

GT-S Dimensional Data........................................................................................................................................................................................................................................37

Electrical Data.............................................................................................................................................................................................................................................................38

Thermostat Wiring..................................................................................................................................................................................................................................................39

CXM Control Features.........................................................................................................................................................................................................................................40

Typical Wiring Diagram - GT-PX Units........................................................................................................................................................................................................43

Typical Wiring Diagram - GT-GS Units........................................................................................................................................................................................................44

Typical Wiring Diagram - GT-S Units............................................................................................................................................................................................................45

Equipment Selection...............................................................................................................................................................................................................................................46

Engineering Guides..................................................................................................................................................................................................................................................49

Accessories, Options, & Warranty..................................................................................................................................................................................................................52

Guide Revision Log.............................................................................................................................................................................................................................Back Cover

Revised: 08/10/05D

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Carrier

Agency (EPA) and the Department of Energy

(DOE). Because it is lowest in CO₂emissions,

geothermal technology provides a solution to global

warming by primarily using the natural energy

of the earth. In contrast, traditional space

conditioning systems depend upon the exploitation

and burning of fossil energy sources with the

resultant greenhouse gas emissions. Also, Puron^®

HFC 410A refrigerant is used in the GT-PX series

equipment for minimum global warming impact and

zero ozone depletion.

Geothermal Advantages

Geothermal systems transfer heat from a building

to the earth in the cooling mode, or from the

earth to the building in the heating mode. Water

is used as the heat transfer medium, either in a

closed loop piping system, or by directly pumping

well water. By using this stable thermal source,

geothermal heat pumps provide energy efﬁcient

comfort year around.

Highest Efﬁciency

The extremely high levels of efﬁciency are

Better Investment

possible because a geothermal heat pump only

uses electricity to move heat, not produce it. A

geothermal unit typically supplies 4 kilowatts of

heat for every kilowatt of electricity used. Three of

these kilowatts of heat come directly from the earth

itself, and are clean, free, and renewable. Overall,

geothermal technology offers the highest cooling

EER’s and heating COP’s available in the industry.

Most systems also include a hot water generator,

which diverts a portion of the supplied heat to the

domestic water heater. This provides a substantial

portion of a family’s hot water needs at a very low

cost. Overall, geothermal technology offers the

highest cooling EER’s and heating COP’s available in

the industry.

Low life-cycle costs are provided by the low

operating and maintenance costs of geothermal

systems, even when the higher initial installation costs

are considered. In new construction, monthly energy

savings typically exceed the increased mortgage

payments. Therefore, cash ﬂow can be positive from

the start. In retroﬁt systems, a buyer who purchases

with cash usually realizes a return on investment

well above certiﬁcate of deposit rates. And, with

equipment life exceeding 20 years, a Carrier

geothermal system is a lasting investment.

Electric utilities, recognizing the dual beneﬁts of

high efﬁciency and low electric peak demand, often

provide incentives to purchase these systems.

Maximum Comfort

Before choosing a geothermal system, many

application factors must be evaluated including:

• Ground water availability and quality

• Loop installation costs

Geothermal heat pumps also provide higher

comfort levels than traditional space conditioning

equipment. By using a relatively warm source of

heat such as the earth, supply air temperatures

are signiﬁcantly higher in the heating mode than

traditional air-source heat pumps. Geothermal

heat pumps also cycle much less often than fossil

furnaces, creating a consistent indoor temperature

with comfortable relative humidity.

• Land area available

• Sub-soil conditions

• Local codes

• Owner preferences

Carrier dealers have the expertise and computer

software to determine the best type of system.

Many regions have contractors specializing in the

installation of the ground loop portion of the system.

Environmentally Friendly

The environmental advantages of geothermal

systems have caught the eye of governmental

agencies such as the Environmental Protection

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Indoor & Outdoor Split

Geothermal Comfort Systems

Vertical Loops are the ideal choice when available

land area is limited.

Closed Loop Systems

Closed Loop Systems consist of an underground

heat exchange network of sealed, high strength

polyethylene plastic pipe and a Flow Controller

pumping module. When cooling, the loop ﬂuid

temperature will rise, and rejected heat is dissipated

into the cooler earth. Conversely, while heating, the

loop ﬂuid temperatures fall, and heat is absorbed

from the earth. Carrier Flow Controller pumping

modules utilize small wattage pumps to circulate the

water/antifreeze ﬂuid within the piping system. The

plastic heat exchange loop is closed and thermally

fusion-welded at all connections in the same manner

as natural gas distribution lines. Closed loops do not

require a ground water supply or drain, and they are

not subject to mineral build up.

Drilling equipment is

used to bore small-

diameter vertical

holes. Two pipes

joined together with

a u-bend ﬁtting are

inserted into the

vertical bore. Bore hole depth ranges from 100-300

feet per system ton. Bores must be spaced from

10-15 feet apart and properly grouted. The land

space required ranges from 100-200 square feet per

system ton.

Pond (Lake) Loops are very economical to install

when a body of

surface water is

Closed Loops can be installed in vertical or

horizontal conﬁgurations, or submerged in a

pond or lake. When designed properly, all three

alternatives operate with similar efﬁciency. Carrier

high density polyethylene plastic pipe is used for all

closed loop installations. Pipe connections are heat

fused to form joints that are stronger than the pipe

itself. Carrier loop piping has a life expectancy in

excess of 50 years.

available, because

excavation costs are

mostly eliminated.

Coils or “slinky” mats

of pipe are simply

placed on the bottom

of the pond (lake). In most cases, 1/4 to 1/2 acre of

water surface, with a minimum depth of 8-10 feet, is

needed for a typical residence.

Horizontal Loops are often considered when

adequate land space

Ground Water Systems

is available. The

pipes are placed in

Open loop systems utilize ground water as a direct

energy source when

trenches, excavated

good quality water

by a backhoe or chain

is available at a

trencher to a depth of

reasonable pumping

4-6 feet. Depending

depth. A well must

on design, from 1-6

have enough capacity

pipes are installed in each trench. Multiple pipe

and coiled “slinky” conﬁgurations are often used

to conserve land requirements and reduce overall

installed loop costs. Horizontal boring technology

can also be used to install u-bend loops 10-15 feet

deep with minimal landscaping disruption. Trench

lengths range from 100-400 feet per system ton.

Trenches must be spaced from 6-10 feet apart. The

overall land area required ranges from 750-1,500

square feet per system ton.

to deliver a minimum

of 1.5 gpm per system

ton during peak

operation. Ditches, ﬁeld tiles, ponds and streams are

the most common discharge systems. Reinjection or

semi-closed recirculation wells can also be utilized

in some regions. In ideal conditions, an open loop

application can be the most economical type of

system to install.

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GT-PX

and allows for steady cooling comfort. Homeowners

now have a better, more efﬁcient way to power

their heating and cooling system, raising their level of

comfort, while lowering energy bills. So when your

customers need a new heating and cooling system,

make sure it has the best technology inside – the

Copeland Scroll UltraTech™ compressor.

Rounding Out the Product Line

Building upon the overwhelming market success of

the GT-PX packaged unit, the split system uses the

same components in a more ﬂexible conﬁguration.

The GT-PX split system compressor section can be

coupled with a variety of air handlers and add-on

furnace coils to achieve the highest efﬁciencies of

any split system heat pump on the market today,

while still providing the ﬂexibility of an all-electric or

dual fuel system and a remote compressor section

location. Split systems are often used in areas where

it would be difﬁcult to install a packaged unit, such as

in an attic or crawl space.

Save with superior efﬁciency. Over 40% of summer

utility bills can come from the air conditioner

compressor operation.A system with the Copeland

Scroll UltraTech™ compressor delivers higher

efﬁciency than any other single compressor system.

In fact, systems with UltraTech™ provide up to 60%

greater energy efﬁciency as compared to 10 SEER

systems – which can save homeowners hundreds

of dollars a year in energy costs.

Puron Refrigerant

Puron^®is a non-chlorine based (HFC

410A) refrigerant, that with R-407C

and R-134A, is seen as the future of

all refrigerants used worldwide. HFC

410A characteristics compared to R-

22 are:

Take it easy with quieter control. Copeland

Scroll UltraTech™ is remarkably quiet at both

full- and part-load capacity. In fact, it is up to four

times quieter than a reciprocating compressor.

Homeowners can enjoy its superior efﬁciency and

comfort without having to hear the operation.

• Binary and near azeotropic mixture of 50% R-32

and 50% R-125.

Learn the beauty of the design.With Copeland Scroll

•

Higher efﬁciencies (50-60% higher

UltraTech™, two internal bypass ports enable the

operating pressures).

system to run at 67% part-load capacity for better

efﬁciency

• Zero ozone depletion potential and low global

warming potential.

and humidity

control. Based

on demand,

the modulation

• Virtually no glide. Unlike other alternative

refrigerants, the two components in HFC 410A

have virtually the same leak rates.Therefore,

refrigerant can be added if necessary without

recovering the charge.

ring is

activated,

sealing the bypass ports and instantly shifting capacity

to 100%.Take advantage of “shift on the ﬂy” stage

changing (no stopping and starting required like other

two-stage compressors).

CopelandTwo-Stage Scroll Compressor

Achieve a greater level of comfort.

The Copeland Scroll UltraTech™

provides superior comfort than

Choose proven scroll performance.While Copeland

Scroll UltraTech™ builds on established scroll

technology, it is still a scroll at heart, which means

it operates with fewer moving parts, no volumetric

efﬁciency drop-off or compression leakage.The result

is unsurpassed reliability and virtually silent operation

for both indoor and outdoor applications.

ﬁxed-capacity compressors by

incorporating a revolutionary two-

step design.With a unique 67%

part-load capacity step, systems

with UltraTech™ maintain precise

temperature levels and lower relative

humidity.This eliminates uneven peaks and valleys

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Two-Stage Indoor Split

Puron Systems

• Two-Stage operation for ultra high efﬁciencies and

unsurpassed comfort.

• Operating temperature range and high efﬁciency

allow shorter loops.

• Optional hot water generator with internal pump

generates hot water at considerable savings.

• Rugged and highly efﬁcient next generation

Copeland UltraTech™ scroll compressors provide

the industry’s highest efﬁciencies and full capacity

with reduced cycling losses.

Other New Features

• Stylish two-tone look with textured black powder

coat paint and stainless steel front access panel.

• Liftout handle for front access panel.

• Factory supplied (ﬁeld-installed) ﬁlter drier for

trouble free reliability.

• Easy access low proﬁle horizontal control box.

• Double isolated compressor for quiet and

vibration free operation.

• Spring-mounted compressor for additional

noise suppression.

• Open Service-Friendly Cabinet (i.e, all

components in compressor section can be

serviced from the front).

• Oversized coaxial tube water-to-refrigerant heat

exchangers operate at low liquid pressure drop.

Convoluted copper (and optional cupronickel)

water tube functions efﬁciently at low-ﬂow rates

and provides freeze-damage resistance.

Service Advantages

• Removable panels - 3 for compressor section

(plus removable top panel).

• Low proﬁle control box grants easy access to all

internal components.

• Factory supplied (ﬁeld installed) liquid line

ﬁlter/drier.

• Brass swivel-type water connections for quick

connection and elimination of wrenches or

sealants during installation.

• Bi-directional thermal expansion valve.

• CXM control features status lights with memory

for easy diagnostics.

The GT-PX Series Split System has abundant

features and industry leading efﬁciency.

• Unit Performance Sentinel alerts homeowner of

potential performance issues.

Application Flexibility

• Four Capacities 026, 038, 049, and 064.

• Extended range operation (20-120°F EWT) and

ﬂow rates as low as 1.5 gpm per ton.

• Compressor section match-ups for a variety of air

handlers and add-on furnace coils for the ultimate

in system and fuel type ﬂexibility.

• Precharged compressor section with back-seating

service valves for quick installation.

•

Circuit breaker protected 75VA control transformer.

• High and low pressure service ports on

refrigerant circuit.

• Accurate refrigerant sensing freeze protection.

Factory Quality

• All units are built on our Integrated Process

Control Assembly System (IPCS).The IPCS is

a unique state of the art manufacturing system

that is designed to assure quality of the highest

standards of any manufacturer in the water-source

industry. Our IPCS system:

• Circuit breaker protected loop and hot water

generator pumps.

• Field selectable freeze protection setting for well

or loop.

•

Puron HFC 410A zero ozone depletion refrigerant.

• Highest efﬁciencies for split systems in ARI/ISO/

ASHRAE/ANSI 13256-1 ratings for heating COP’s,

cooling EER’s with low water ﬂow rates.

-Veriﬁes that the correct components are

being assembled.

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GT-PX

- Automatically performs special leak tests on

all joints.

- Conducts pressure tests.

- Performs highly detailed run test unparalleled in

the HVAC industry.

- Automatically disables packaging for a “failed” unit.

- Creates computer database for future service

analysis and diagnostics from run test results.

• Heavy gauge galvanized steel cabinets are epoxy

powder coated for durable and long-lasting ﬁnish.

• All refrigerant brazing is done in a nitrogen

atmosphere.

• All units are deep evacuated to less than 100

microns prior to refrigerant charging.

• All joints are both helium and halogen leak tested

to insure annual leak rate of less than 1/4 ounce.

• Coaxial heat exchanger, refrigerant suction lines

and all water lines are fully insulated to eliminate

condensation problems in low temperature

applications.

• Noise Reduction features include: double isolation

mounted compressors, compressor springs,

insulated compressor compartment, and interior

cabinet insulation using 1/2” coated glass ﬁber.

•

Safety features include: high pressure and loss of

charge to protect the compressor; condensate

overﬂow protection; low water temperature

limit sensors to safeguard the coaxial heat

exchanger and air coil; hot water high limit and low

compressor discharge temperature switch provided

to shut down the hot water generator when

conditions dictate. Fault lockout enables emergency

heat and prevents compressor operation until

thermostat or circuit breaker has been reset.

Advanced Unit Controls With

Easy Diagnostics And

Unit Protection Sentinel Functions

Options & Accessories

• Optional hot water generator with internally

mounted pump.

• Optional cupronickel coaxial heat exchanger.

• Electronic thermostat.

• Closed loop Flow Controller.

• Electronic auto-changeover thermostat with 3-

stage heat, 2-stage cool and indicator LED’s.

• Hose kits.

Puron HFC 410A Refrigerant

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Two-Stage Indoor Split

Puron Systems

Features and Beneﬁts

Optional Factory

Fully Insulated

Water and

Refrigerant Lines

Three Easy, Lift-out

Service Access Panels with

Stainless Steel Front Panel

Installed Hot Water

Genorator With

Internal Pump

Brass Swivel

Water Connections

Oversized

Water Coil

Backseating Brass

ServiceValves with

Service Port

Low Proﬁle Control Box

Two-Stage Copeland

UltraTech™ Unloading

Scroll Compressor

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GT-GS

• High and low pressure service ports in the

refrigerant circuit.

• Refrigerant sensing freeze protection for more

accurate low temperature cut-out.

Application Flexibility

• Eight Capacities 018, 024, 030, 036, 042, 048,

and 060.

• Voltage availability in 208-230/60/1.

• Stackable cabinets.

• Extended range operation (20-120°F EWT) and

ﬂow rates as low as 1.5 gpm per ton.

• Circuit breaker protected loop and hot water

generator pumps.

• Field selectable low temperature cut-out selection

setting for well or loop.

• Corner located electrical box for wiring access

from two sides.

• Compressor mounting springs “matched” to each

compressor for maximum quietness.

• Narrow cabinet for movement through doorways.

• Precharged refrigerant circuit with backseating

service valves for quick installation.

Factory Quality

• All units are built on our Integrated Process

Control Assembly System (IPCS).The IPCS is

a unique state of the art manufacturing system

that is designed to assure quality of the highest

standards of any manufacturer in the water-source

industry. Our IPCS system:

-Veriﬁes that the correct components are

being assembled.

- Automatically performs special leak tests on

all joints.

- Conducts pressure tests.

- Performs highly detailed run test unparalleled in

the HVAC industry.

Automatically disables packaging for a “failed” unit.

Operating Efﬁciencies

- Creates computer database for future service

analysis and diagnostics from run test results.

• Heavy gauge galvanized steel cabinets are epoxy

powder coated for durable and long-lasting ﬁnish.

• All refrigerant brazing is done in a nitrogen

atmosphere.

• ARI/ASHRAE/ISO 13256-1 ratings for heating

COP’s, cooling EER’s and low water ﬂow rates.

• Operating and temperature range allow

shorter loops.

• Optional hot water generator with internal pump

generates hot water at considerable savings.

• Rugged, super quiet, and highly efﬁcient

scroll compressors.

• Oversized coaxial tube water to refrigerant heat

exchangers operate at low liquid pressure drop.

• Convoluted copper (and optional cupronickel)

water tube functions efﬁciently at low-ﬂow rates

and provides freeze-damage resistance.

• All units are deep evacuated to less than 100

microns prior to refrigerant charging.

• All joints are both helium and halogen leak tested

to insure annual leak rate of less than 1/4 ounce.

• Coaxial heat exchanger, refrigerant suction lines

and all water lines are fully insulated to eliminate

condensation problems in low temperature

applications.

• Noise Reduction features include: double isolation

mounted compressors, compressor springs,

insulated compressor compartment, and interior

cabinet insulation using 1/2” coated glass ﬁber.

Service Advantages

• Removable panels-3 for compressor.

• Brass swivel-type water and HWG connections

for quick connection and elimination of wrenches

or sealants during installation.

•

Safety features include: high pressure and loss of

charge to protect the compressor; condensate

overﬂow protection; low water temperature

limit sensors to safeguard the coaxial heat

•

Solid state digital compressor module provides

reliable lockout, diagnostic, and time delay functions.

• High side loss-of-charge sensing reduces nuisance

low pressure faults.

• LED Fault and status indication with memory for

easy diagnostics.

exchanger and air coil; hot water high limit and low

compressor discharge temperature switch provided

to shut down the hot water generator when

conditions dictate. Fault lockout enables emergency

heat and prevents compressor operation until

thermostat or circuit breaker has been reset.

•

Designed for front-access service in tight applications.

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Single-Stage Indoor Split

R22 Systems

Options & Accessories

• Optional hot water generator with internally

mounted pump.

• Optional cupronickel coaxial heat exchanger.

• Wide thermostat selection.

• Closed loop ﬂow controller.

• Hose kits.

Features and Beneﬁts

Epoxy Powder Coat Painted

Stackable Cabinet

Easy Service Access From

Three Sides

Fully Insulated

Water and

Refrigerant Lines

Digital Controls

Backseating Brass

ServiceValves with

Service Port

Copeland Scroll Compressors

1” Brass Swivel Water Connections

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GT-S

In new construction, the GT-S offers many beneﬁts

over packaged geothermal units:The ﬂuid loop is

kept outside, which keeps large diameter piping,

ﬂammable antifreezes and ﬂushing carts (a large,

messy service tool) out of the home.The outdoor

compressor means noise and most service activity

will remain outside.The indoor air handlers are quiet,

require less space and allow less costly ductwork

(they don’t have to be side return with canvas collars

and plenum lining).Also, a GT-S can utilize a gas

furnace as the blower and supplemental heat (dual

fuel or add-on) which removes a major consumer

barrier in that geothermal has traditionally forced the

homeowner to make an all-electric home decision.

An add-on application also allows the option of sizing

the geothermal component to the cooling load,

rather than heating, which may further reduce ﬁrst

costs.The GT-S should be able to tap a larger new

construction segment than geothermal currently

captures, even when marketed through existing

geothermal dealers.

What is the GT-S?

Carrier introduced the industry to the ﬁrst ever

“outdoor” geothermal split system with internal

pumping for residential applications.We are giving

the consumer choices for unit location!The unit may

be installed inside or outside, thereby satisfying the

requirements of almost any home.When installed

outside, the unit may be placed on an existing pad

and easily connected to existing electric service.And

with this installation option, the ﬂuid loop remains

outside avoiding extensive installation inside the home.

The GT-S is geothermal without the hassle.

Why “Paradigm Shift”?

We have deﬁned the paradigm shift as follows: to

advance a model of technology beyond the familiar.

But what do we mean? Essentially, our GT-S is taking

traditional geothermal technology a step further

by offering a unique split system design suitable for

any home. Home owners can now enjoy all the

savings of a geothermal system with lower installation

costs and less hassle. More importantly, the GT-S is

opening up the previously illusive retroﬁt market.

Hence, our slogan “From Air to Water...”.The GT-S is

a competitive product designed to shift traditional air

source homeowners to the beneﬁts of water source

geothermal technology.

In the replacement market, the GT-S greatly expands

the range of suitable geothermal applications. Current

geothermal retroﬁts have required a complete change

out of all existing equipment, elaborate ductwork

modiﬁcations, complex routing of interior loop ﬂuid

lines including below grade foundation penetrations,

upgraded electrical service and unit feeders (110v

furnace being changed to 240v heat pump with

electric backup), and more.This assumes that a

geothermal package unit can even be adapted to ﬁt

into the existing space.This process is expensive and

disruptive to the owner (they typically don’t want to

change radically from what they have); hence the lack

of geothermal retroﬁts existing. In contrast, the GT-

From the utility perspective, the GT-S just about

perfectly embodies what the utility industry has been

searching for in geothermal: Lower ﬁrst cost, simple

and easy to service, ﬁts traditional dealer practices

and broad market appeal especially for retroﬁt, etc.

The GT-S can pull geothermal out of its high end

niche into more of a mainstream segment.

can be installed outside on the same line set and

electric service supplying the existing air conditioner

or heat pump condensing unit.The loop stays outside.

Only the indoor coil might need to be changed on

an existing furnace, or possibly the air handler on an

older heat pump.The purchase timing could be driven

by a ﬁrst-time central cooling addition; the upgrade

replacement of an aging or broken air conditioner, heat

pump or furnace; an HVAC change necessitated by a

renovation; or an efﬁciency upgrade driven by a utility

marketing program.

The GT-S Concept

The GT-S provides a unique solution to many of the

problems associated with single-package geothermal

units. In addition, it substantially reduces overall

installed costs and perhaps more importantly, opens

up the largely untapped retroﬁt market (which, for

conventional equipment, is over 3 times larger than

the new construction market).

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Single-Stage Outdoor Split

R22 Systems

The GT-S does not need to be located outside.

It can be placed in garages, carports, basements,

crawl spaces, etc.This may be important to some

homeowners who may be very concerned about

outdoor aesthetics.They also can utilize ground

water if placed in an appropriate indoor location.

Noise is not a problem as the GT-S is extremely

quiet (the box is sealed and insulated).The GT-S also

has excellent heating and latent cooling capacities

output of one size larger competitor unit.And the

GT-S is likely to be the highest EER per dollar cost

unit available in the geothermal industry today.

The goal for the GT-S Series is based upon

application ﬂexibility, efﬁciency, reliability and a solid

state microprocessor compressor control, producing

a reliable, simple product both easy to service and

install. Its efﬁciency and application ﬂexibility make it

compared with competitive high efﬁciency geothermal the “Paradigm” of geothermal heat pumps.

units. In many cases a GT-S produces the heating

Typical GT-S / Air Handler Installation

Power

Disconnects

Air Handler

Condensing

Unit

Insulated line

set with UV

Paint

TXV “IN” toward

outdoor

condensing Unit

Return Plenum

Air Pad

Low Voltage Wiring

PVC Condensate

with vented trap

Typical GT-S / Add-on Coil Installation

TXV “IN” toward outdoor

condensing unit

Power

Disconnects

Add-On

“A” Coil

Condensing

Insulated line

set with

Unit

Air

Temperature

Limit Switch

UV Paint

Fossil Furnace

Return Plenum

Air Pad

Low Voltage Wiring

PVC Condensate

with vented trap

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GT-S

• High and low pressure service ports in the

refrigerant circuit.

• Refrigerant sensing freeze protection for more

accurate low temperature cut-out.

Application Flexibility

• Eight Capacities 018, 024, 030, 036, 042, 048,

and 060.

• Voltage availability in 208-230/60/1.

• Stackable cabinets.

Factory Quality

• Extended range operation (20-120°F EWT)

and ﬂow rates as low as 2.25 gpm per ton

(geothermal closed loop operation).

• Circuit breaker protected loop and hot water

generator pumps.

• Field selectable low temperature cut-out selection

setting for geothermal closed loop operation.

• Easily accessible electrical box for wiring.

• Weather-resistent cabinet.

• All units are built on our Integrated Process

Control Assembly System (IPCS).The IPCS is

a unique state of the art manufacturing system

that is designed to assure quality of the highest

standards of any manufacturer in the water-source

industry. Our IPCS system:

-Veriﬁes that the correct components are

being assembled.

- Automatically performs special leak tests on

all joints.

•

Internally-mounted (ﬁeld installed) Flow Controller

• Precharged refrigerant circuit with backseating

service valves for quick installation.

- Conducts pressure tests.

- Performs highly detailed run test unparalleled in

the HVAC industry.

Operating Efﬁciencies

Automatically disables packaging for a “failed” unit.

• ARI/ASHRAE/ISO 13256-1 ratings for heating

COP’s, cooling EER’s and low water ﬂow rates.

• Operating and temperature range allow

shorter loops.

• Optional remoted-mounted hot water generator

with internal pump generates hot water at

considerable savings.

- Creates computer database for future service

analysis and diagnostics from run test results.

• Heavy gauge galvanized steel cabinets are epoxy

powder coated for durable and long-lasting ﬁnish.

• All refrigerant brazing is done in a nitrogen

atmosphere.

• All units are deep evacuated to less than 100

microns prior to refrigerant charging.

• Rugged, super quiet, and highly efﬁcient scroll

compressors (rotary for size 018).

• All joints are both helium and halogen leak tested

to insure annual leak rate of less than 1/4 ounce.

• Coaxial heat exchanger, refrigerant suction lines

and all water lines are fully insulated to eliminate

condensation problems in low temperature

applications.

• Oversized coaxial tube water to refrigerant heat

exchangers operate at low liquid pressure drop.

• Convoluted copper (and optional cupronickel)

water tube functions efﬁciently at low-ﬂow rates

and provides freeze-damage resistance.

• Noise Reduction features include: double isolation

mounted compressors, compressor springs,

insulated compressor compartment, and interior

cabinet insulation using 1/2” coated glass ﬁber.

Service Advantages

• Removable side and top panels for easy access to

water/refrigerant circuits.

• Low ambient temperature switch activates loop

pump in extreme temperatures.

•

Safety features include: high pressure and loss of

charge to protect the compressor; condensate

overﬂow protection; low water temperature

limit sensors to safeguard the coaxial heat

•

Solid state digital compressor module provides

exchanger and air coil; hot water high limit and low

compressor discharge temperature switch provided

to shut down the hot water generator when

conditions dictate. Fault lockout enables emergency

heat and prevents compressor operation until

thermostat or circuit breaker has been reset.

reliable lockout, diagnostic, and time delay functions.

• High side loss-of-charge sensing reduces nuisance

low pressure faults.

• LED Fault and status indication with memory for

easy diagnostics.

Carrier Indoor & Outdoor Split Geothermal Heat Pumps - Rev.: 08/10/05

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Single-Stage Outdoor Split

R22 Systems

Options & Accessories

• Optional remote-mounted hot water generator

with internally mounted pump.

• Optional cupronickel coaxial heat exchanger.

• Wide thermostat selection.

• Closed loop ﬂow controller.

Features and Beneﬁts

Internally Mounted

Flow Controller

Copeland Scroll Compressor

(Rotary in 018)

Powder Coated Galvanized

Heavy Gauge Steel

Digital Controls

Insulated Weather

Resistant Cabinet

Hot Water

Generator Ready

BackSeating Brass ServiceValves

with Service port

Integral Carrying Handles

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Carrier

ARI/ISO/ASHRAE 13256-1

GT-PX (50YDS) Performance Data - English (IP) Units

ARI/ISO/ASHRAE 13256-1

English (IP) Units

Water Loop Heat Pump

Cooling 86°F Heating 68°F

Ground Water Heat Pump

Ground Loop Heat Pump

Cooling 59°F

Heating 50°F

Cooling 77°F

Heating 32°F

Model

Load

Capacity

Btuh

Capacity

Btuh

Capacity

Btuh

Capacity

Btuh

Capacity

EER

Btuh/W

EER

Btuh/W

EER

Btuh/W

COP

Btuh

25,600

19,200

35,900

24,400

47,700

33,800

58,800

42,300

Btuh

19,500

16,600

27,000

21,400

37,200

29,900

45,700

37,500

026

038

049

064

Full

Part

Full

Part

Full

Part

Full

Part

24,700

18,300

35,900

24,400

48,100

33,300

56,900

40,800

15.0

16.3

14.8

16.5

14.6

16.0

14.5

15.8

31,400

24,300

44,700

30,300

59,400

42,000

74,000

52,700

5.3

5.4

5.0

5.6

5.2

5.4

4.7

5.2

28,600

22,000

40,100

28,000

53,900

38,700

63,800

46,000

23.2

29.4

21.4

27.1

20.9

26.8

19.2

25.7

4.7

4.6

4.5

4.6

4.7

4.3

4.4

26,400

20,800

37,300

27,100

50,200

37,000

59,500

44,800

18.0

24.5

16.7

23.7

16.6

22.8

15.3

22.2

3.9

4.1

3.8

4.1

4.0

4.2

3.6

4.0

GT-PX (50YDS) Performance Data - Metric (SI) Units

ARI/ISO/ASHRAE 13256-1

Metric (SI) Units

Water Loop Heat Pump

Cooling 30°C Heating 20°C

Capacity EER Capacity

Ground Water Heat Pump

Cooling 15°C Heating 10°C

Capacity EER Capacity

Ground Loop Heat Pump

Cooling 25°C Heating 0°C

Capacity EER Capacity

Model

Load

COP

Watts

W/W

4.4

4.8

4.3

4.8

4.3

4.7

4.2

4.6

Watts

W/W

6.8

8.6

6.3

7.9

6.1

7.9

5.6

7.5

Watts

W/W

5.3

7.2

4.9

6.9

4.9

6.7

4.5

6.5

Watts

5,715

4,865

7,913

6,272

10,903

8,763

13,394

10,991

026

038

049

064

Full

Part

Full

Part

Full

Part

Full

Part

7,239

9,203

5.3

5.4

5.0

5.6

5.2

5.4

4.7

5.2

8,382

7,503

4.7

4.6

4.5

4.6

4.7

4.3

4.4

7,737

3.9

4.1

3.8

4.1

4.0

4.2

3.6

4.0

5,363

7,122

6,448

5,627

6,096

10,522

7,151

13,101

8,880

11,753

8,206

10,522

7,151

10,932

7,943

14,097

9,760

17,409

12,309

21,688

15,445

15,797

11,342

18,699

13,482

13,980

9,906

14,713

10,844

17,438

13,130

16,676

11,958

17,233

12,397

Cooling capacities based upon 80.6°F DB, 66.2°F WB entering air temperature.

Heating capacities based upon 68°F DB, 59°F WB entering air temperature.

All ratings based upon 208V operation.

Carrier Indoor & Outdoor Split Geothermal Heat Pumps - Rev.: 08/10/05

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Indoor & Outdoor Split

Geothermal Comfort Systems

ARI/ISO/ASHRAE 13256-1

GT-GS (50YCS) & GT-S (38WQS) Performance Data - English (IP) Units

Water Loop Heat Pump

Cooling 86°F Heating 68°F

Ground Water Heat Pump

Cooling 59°F Heating 50°F

Ground Loop Heat Pump

Cooling 77°F Heating 32°F

Model

Capacity

Btuh

Capacity

Btuh

Capacity

Btuh

Capacity

Btuh

Capacity

Btuh

Capacity

Btuh

EER

Btuh/W

EER

Btuh/W

EER

Btuh/W

COP

018

024

030

036

042

048

060

16,600

23,500

28,000

32,800

39,800

44,500

55,100

14.4

14.5

14.7

14.5

14.1

14.2

13.0

20,300

29,300

34,000

39,200

48,300

52,500

72,700

4.8

4.7

4.4

4.7

4.8

4.6

18,500

25,700

30,200

34,900

44,100

47,500

57,800

22.1

20.6

20.8

20.1

19.7

19.3

17.2

15,500

22,800

26,400

31,900

37,800

42,000

57,100

4.0

3.9

3.7

17,800

25,200

29,800

34,700

42,000

47,400

57,600

16.2

16.6

16.4

15.9

15.5

15.9

14.2

12,800

18,600

21,500

25,900

31,700

35,800

47,200

3.5

3.3

3.6

3.5

Cooling capacities based upon 80.6°F DB, 66.2°F WB entering air temperature.

Heating capacities based upon 68°F DB, 59°F WB entering air temperature.

All ratings based upon 208V operation.

GT-GS (50YCS) & GT-S (38WQS) Performance Data - Metric (SI) Units

Water Loop Heat Pump

Cooling 30°C Heating 20°C

Ground Water Heat Pump

Cooling 15°C Heating 10°C

Ground Loop Heat Pump

Cooling 25°C Heating 0°C

Model

Capacity

Watts

Capacity

Watts

Capacity

Watts

Capacity

Watts

Capacity

Watts

Capacity

Watts

EER

W/W

EER

W/W

EER

W/W

COP

018

024

030

036

042

048

060

4,865

6,887

4.2

4.3

4.2

4.1

4.2

3.8

5,950

8,587

4.8

4.7

4.4

4.7

4.8

4.6

5,422

7,532

6.5

6.0

6.1

5.9

5.8

5.7

5.0

4,543

6,682

4.0

3.9

3.7

5,217

7.386

4.7

4.9

4.8

4.7

4.5

4.7

4.2

3,751

5,451

6,301

7,591

9,291

10,492

13,834

3.5

3.3

3.6

3.5

8,206

9,965

8,851

7,737

8.734

9,613

11,489

14,156

15,387

21,307

10,229

12,925

13,921

16,940

9,349

10,170

12,309

13,892

16,882

11,665

13,042

16,149

11,079

12,309

16,735

Cooling capacities based upon 80.6°F DB, 66.2°F WB entering air temperature.

Heating capacities based upon 68°F DB, 59°F WB entering air temperature.

All ratings based upon 208V operation.

Carrier Indoor & Outdoor Split Geothermal Heat Pumps - Rev.: 08/10/05

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Carrier

Model Nomenclature

10 11 12

5 0 Y D S 0 3 8 N C C 3 0

UNIT TYPE:

YDS = INDOOR PURON SPLIT

PACKAGING:

1=SINGLE PACK,DOMESTIC

SYSTEM CONDENSING UNIT

REVISION LEVEL:

0 = CURRENT REVISION

SIZE:

026

038

049

VOLTAGE:

3 = 208V, 230V/1PH/60Hz

AIRFLOW CONFIGURATION:

064

UNIT SIZES 018 thru 060

OPTION RETURN DISCHARGE FILTER

HEAT EXCHANGER OPTIONS:

C = COPPER WATER COIL

NONE

D = COPPER WATER COIL W/HOT WATER GENERATOR

N = CUPRO-NICKEL WATER COIL

CONTROL:

C = CXM

P = CUPRO-NICKEL WATER COIL W/HOT WATER GENERATOR

Rev.: 08/15/05D

10 11 12

5 0 Y C S 0 2 4 N L C 3 0

UNIT TYPE:

YCS = INDOOR SPLIT SYSTEM

CONDENSING UNIT

PACKAGING:

1=SINGLE PACK,DOMESTIC

REVISION LEVEL:

0 = CURRENT REVISION

SIZE:

018

024

030

036

042

048

060

VOLTAGE:

3 = 208V, 230V/1PH/60Hz

AIRFLOW CONFIGURATION:

UNIT SIZES 018 thru 060

OPTION RETURN DISCHARGE FILTER

HEAT EXCHANGER OPTIONS:

C = COPPER WATER COIL

NONE

D = COPPER WATER COIL W/HOT WATER GENERATOR

N = CUPRO-NICKEL WATER COIL

CONTROL:

L = CXM

P = CUPRO-NICKEL WATER COIL W/HOT WATER GENERATOR

Rev.: 03/16/04D

10 11 1 2

3 8 W Q S 0 2 4 S S C 3 0 1

UNIT TYPE:

WQS = OUDOOR SPLIT SYSTEM

CONDENSING UNIT

PACKAGING:

1 = SINGLE PACK, DOMESTIC

REVISION LEVEL:

1 = CURRENT REVISION

SIZE:

018

024

030

036

042

048

060

VOLTAGE:

3=208V,230V/1PH/60Hz

STANDARD:

SS = STANDARD

HEAT EXCHANGER OPTIONS:

C = COPPER WATER COIL

N = CUPRO-NICKEL WATER COIL

Rev.: 04/18/04D

Carrier Indoor & Outdoor Split Geothermal Heat Pumps - Rev.: 08/10/05

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Indoor & Outdoor Split

Geothermal Comfort Systems

Heating

Cooling

LWT = EWT -

LC = TC - SC

LWT = EWT +

GPM x 500

LAT = EAT +

S/T =

LAT (DB) = EAT (DB) -

CFM x1.08

CFM

EWT

GPM

EAT

airﬂow, cubic feet/minute

entering water temperature, ˚F

water ﬂow in US gallons/minute

entering air temperature, Fahrenheit

(dry bulb/wet bulb)

HWC

WPD

Hot Water Generator (desuperheater)

capacity, Mbtuh

Water coil pressure drop (psi & ft hd)

Energy Efﬁciency Ratio

EER

= BTU output/Watt input

air heating capacity, Mbtuh

total cooling capacity, Mbtuh

sensible cooling capacity, Mbtuh

total power unit input, KiloWatts

total heat of rejection, Mbtuh

total heat of extraction, Mbtuh

COP

Coefﬁcient of Performance

= BTU output/BTU input

leaving water temperature, °F

leaving air temperature, °F

latent cooling capacity, Mbtuh

sensible to total cooling ratio

LWT

LAT

S/T

GT-GS & GT-S Performance Correction Factors

Heating Corrections

Cooling Corrections

Sens Clg Cap Multiplier - Entering DB °F

Ent Air DB Htg Cap Power

Heat of

Ext

Ent Air Total Clg

Power

Heat of

Rej

80.6

°F

WB °F

Cap

1.019

1.010

1.004

1.000

0.997

0.993

0.896

0.948

0.980

1.000

1.059

1.118

1.054

1.028

1.011

1.000

0.979

0.957

0.881

0.940

0.976

1.000

1.012

1.024

0.943

0.797

0.693

0.624

1.067

0.952

0.868

0.812

0.697

1.192

1.106

1.043

1.000

0.820

0.637

1.240

1.125

1.063

1.023

0.835

0.658

0.983

0.991

0.997

1.000

1.002

1.005

0.899

0.949

0.980

1.000

1.010

1.261

1.217

1.188

0.944

0.817

66.2

1.343

1.067

0.983

1.352

1.257

1.159

1.019

Rev. 5/2/00M

Sensible capacity equals total capacity (no latent capacity) at conditions shown as "*"

ARI/ISO/ASHRAE 13256-1 uses entering air conditions of Clg- 80.6°F DB/66.2°F WB and Htg- 68°F DB/59°F WB

Carrier Indoor & Outdoor Split Geothermal Heat Pumps - Rev.: 08/10/05

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GT-PX

Performance Correction Factors

Airﬂow Correction Factors

TT Full Load Air Flow Corrections

Airflow

Cooling

Total Cap Sens Cap Power

Heating

CFM Per

% of

Nominal

Heat of Rej Htg Cap

Power

Heat of Ext

Ton of Clg

240

275

300

325

350

375

400

425

450

475

500

520

0.925

0.946

0.960

0.972

0.983

0.992

1.000

1.007

1.012

1.016

1.018

1.019

0.788

0.829

0.861

0.895

0.930

0.965

1.000

1.033

1.064

1.092

1.116

1.132

0.913

0.926

0.937

0.950

0.965

0.982

1.000

1.020

1.042

1.066

1.091

1.112

0.922

0.942

0.955

0.968

0.979

0.990

1.000

1.009

1.018

1.025

1.032

1.037

0.946

0.959

0.969

0.977

0.985

0.993

1.000

1.006

1.012

1.018

1.022

1.026

1.153

1.107

1.078

1.053

1.032

1.014

1.000

0.989

0.982

0.979

0.977

0.975

0.896

0.924

0.942

0.959

0.974

0.988

1.000

1.011

1.019

1.027

1.033

1.038

100

106

113

119

125

130

TT Part Load Air Flow Corrections

Airflow

Cooling

Heating

CFM Per

Ton of Clg

% of

Nominal

Total Cap Sens Cap

Power

Heat of Rej Htg Cap

Power

Heat of Ext

240

275

300

325

350

375

400

425

450

475

500

520

0.920

0.942

0.956

0.969

0.981

0.991

1.000

1.007

1.013

1.018

1.021

1.023

0.781

0.832

0.867

0.901

0.934

0.967

1.000

1.033

1.065

1.098

1.131

1.159

0.959

0.964

0.969

0.975

0.982

0.990

1.000

1.011

1.023

1.036

1.051

1.063

0.927

0.946

0.959

0.970

0.981

0.991

1.000

1.008

1.015

1.021

1.026

1.030

0.946

0.960

0.969

0.978

0.986

0.993

1.000

1.006

1.012

1.017

1.021

1.024

1.241

1.163

1.115

1.076

1.043

1.018

1.000

0.990

0.986

0.983

0.981

0.979

0.881

0.915

0.937

0.956

0.973

0.988

1.000

1.010

1.017

1.024

1.030

1.034

100

106

113

119

125

130

Entering Air Correction Factors

TT Full Load Entering Air Corrections

Full Load Heating Corrections

Full Load Cooling Corrections

Sens Clg Cap Multipliers- Entering DB °F

Ent Air Total Clg

Power

Heat of

Rej

Ent Air DB

Heat of

Ext

WB °F

Cap

80.6

100

Htg Cap

Power

°F

1.052

1.043

1.035

1.027

1.019

1.010

1.004

1.000

0.989

0.976

0.779

0.808

0.841

0.877

0.915

0.957

0.982

1.000

1.045

1.093

1.120

1.102

1.084

1.065

1.045

1.023

1.010

1.000

0.974

0.946

0.832

0.850

0.880

0.922

1.346 1.461 1.603

1.004 1.174 1.357

0.694 0.902 1.115

0.946

0.953

0.964

0.977

0.853

0.870

0.896

0.932

1.331

0.646 0.875 1.103 1.329 1.356

66.2

0.975

0.990

1.000

1.040

1.117

0.639 0.869 1.096 1.123 1.320

0.993

0.997

1.000

1.011

1.033

0.979

0.991

1.000

1.035

1.101

0.582 0.812 1.039 1.066 1.262 1.482

0.545 0.774 1.000 1.027 1.223 1.444

0.630 0.853 0.880 1.075 1.297 1.517

0.601 0.627 0.821 1.046 1.275 1.510

* Sensible capacity equals total capacity (no latent capacity) at conditions shown as "*"

Rev.: 03/29/04

ARI/ISO/ASHRAE 13256-1 uses entering air conditions of Clg- 80.6°F DB/66.2°F WB and Htg- 68°F DB/59°F WB

TT Part Load Entering Air Corrections

Part Load Heating Corrections

Part Load Cooling Corrections

Sens Clg Cap Multipliers- Entering DB °F

Ent Air Total Clg

Power

Heat of

Rej

Ent Air DB

°F

Heat of

Ext

WB °F

Cap

80.6

100

Htg Cap

Power

1.084

1.073

1.060

1.046

1.031

1.016

1.006

1.000

0.984

0.968

0.732

0.764

0.802

0.846

0.893

0.945

0.978

1.000

1.058

1.117

1.161

1.140

1.117

1.090

1.061

1.031

1.013

1.000

0.968

0.936

0.876

0.883

0.903

0.935

1.286 1.302 1.389

1.002 1.099 1.241

0.981

0.985

0.989

0.993

0.895

0.901

0.918

0.945

0.706 0.871 1.060 1.271

0.617 0.844 1.079 1.319 1.349

66.2

0.979

0.991

1.000

1.035

1.105

0.595 0.849 1.098 1.128 1.342

0.531 0.789 1.040 1.070 1.284 1.522

0.998

0.999

1.000

1.003

1.008

0.982

0.993

1.000

1.030

1.088

0.486 0.747 1.000 1.030 1.245 1.481

0.583 0.842 0.873 1.090 1.327 1.552

0.552 0.584 0.811

1.057 1.290 1.510

* Sensible capacity equals total capacity (no latent capacity) at conditions shown as "*"

ARI/ISO/ASHRAE 13256-1 uses entering air conditions of Clg- 80.6°F DB/66.2°F WB and Htg- 68°F DB/59°F WB

Rev.: 03/29/04

Carrier Indoor & Outdoor Split Geothermal Heat Pumps - Rev.: 08/10/05

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Two-Stage Indoor Split

50YDS026 Part Load With FV4003

Puron Systems

530 CFM Nominal (Rated) Airﬂow Cooling, 530 CFM Nominal (Rated) Airﬂow Heating

Performance capacities shown in thousands of Btuh

WPD

Cooling - EAT 80/67°F

Heating - EAT 70°F

EWT

°F

GPM

Airﬂow

CFM

PSI

HR EER HWC HC

LAT COP HWC

7.00

3.50

5.75

7.00

3.50

5.75

7.00

3.50

5.75

7.00

3.50

5.75

7.00

3.50

5.75

7.00

3.50

5.75

7.00

3.50

5.75

7.00

3.50

5.75

7.00

3.50

5.75

7.00

3.50

5.75

7.00

3.50

5.75

7.00

4.5

1.2

2.9

4.1

1.1

2.6

3.6

1.0

2.4

3.4

1.0

2.3

3.2

0.9

2.1

3.0

0.8

2.0

2.8

0.8

1.9

2.7

0.8

1.9

2.7

0.8

1.8

2.6

0.7

1.7

2.5

0.7

1.7

2.4

10.4

2.8

6.7

9.5

2.5

6.0

8.3

2.3

5.5

7.9

2.3

5.3

7.4

2.1

4.9

6.9

1.8

4.6

6.5

1.8

4.4

6.2

1.8

4.4

6.2

1.8

4.2

6.0

1.6

3.9

5.8

1.6

3.9

5.5

450

530

450

530

450

530

450

530

450

530

450

530

450

530

450

530

450

530

450

530

450

530

450

530

450

530

450

530

450

530

450

530

450

530

450

530

450

530

450

530

450

530

450

530

450

530

450

530

450

530

450

530

450

530

450

530

450

530

450

530

450

530

450

530

450

530

450

530

10.9

11.1

13.2

13.4

13.8

14.0

14.2

16.0

16.2

16.7

16.9

17.1

18.6

18.9

19.4

19.7

19.6

19.9

21.3

21.6

22.2

22.5

22.4

22.7

24.0

24.3

24.8

25.2

25.1

25.5

26.6

27.0

27.7

28.1

28.0

28.4

28.0

28.4

29.1

29.5

29.4

29.8

29.4

29.8

30.6

31.0

30.9

31.3

1.17

1.12

1.23

1.18

1.23

1.18

1.23

1.18

1.32

1.27

1.32

1.27

1.32

1.27

1.38

1.32

1.38

1.32

1.38

1.32

1.44

1.38

1.45

1.39

1.45

1.39

1.48

1.42

1.49

1.43

1.49

1.43

1.52

1.46

1.53

1.47

1.54

1.48

1.55

1.49

1.56

1.50

1.56

1.50

1.57

1.51

1.60

1.53

1.60

1.53

7.2

7.4

9.1

9.4

9.7

10.0

9.9

92.4

89.4

97.2

93.4

98.4

94.5

98.8

94.8

102.9

98.3

104.4

99.5

104.8

99.9

108.3

103.0

109.9

104.4

110.3

104.8

113.8

107.7

115.7

109.3

116.1

109.7

119.4

112.5

121.0

114.0

121.6

114.5

124.7

117.2

127.0

119.1

127.6

119.6

127.6

119.6

129.9

121.5

130.5

122.1

130.5

122.1

133.0

124.2

133.6

124.7

2.73

2.90

3.15

3.33

3.29

3.48

3.34

3.53

3.55

3.74

3.71

3.90

3.75

3.95

4.20

4.12

4.37

4.16

4.42

4.34

4.59

4.49

4.74

4.53

4.79

4.75

5.02

4.88

5.16

4.94

5.23

5.13

5.42

5.31

5.60

5.33

5.62

5.29

5.59

5.47

5.76

5.52

5.82

5.49

5.78

5.61

5.94

5.66

6.00

1.9

1.7

2.0

1.7

2.0

1.7

1.9

1.7

2.0

1.8

2.0

1.7

2.0

1.7

2.1

1.8

2.1

1.8

2.0

1.8

2.2

1.9

2.2

1.9

2.1

1.9

2.3

2.0

2.3

2.0

2.2

1.9

2.4

2.1

2.4

2.1

2.4

2.1

2.5

2.2

2.5

2.2

2.5

2.2

2.6

2.2

2.6

2.2

2.5

2.2

Operation not recommended

22.1

22.5

22.3

22.7

22.4

22.8

22.6

23.0

22.8

23.2

22.9

23.3

22.1

22.5

22.4

22.8

22.4

22.8

21.1

21.5

21.6

22.0

21.7

22.1

19.6

20.0

20.3

20.7

20.5

20.9

18.1

18.5

18.8

19.2

19.0

19.4

17.4

17.7

18.1

18.4

18.2

18.6

16.7

17.0

17.2

17.5

17.4

17.7

15.1

15.4

15.6

15.9

15.8

16.1

13.9

14.2

14.5

14.4

14.7

12.9

13.2

13.5

13.2

13.5

11.7

12.5

11.7

12.5

11.7

12.5

12.6

13.5

12.6

13.5

12.6

13.5

12.9

13.8

12.9

13.8

12.9

13.8

12.8

13.7

13.0

13.9

13.0

13.9

12.4

13.3

12.6

13.5

12.7

13.6

11.9

12.7

12.1

13.0

12.2

13.1

11.6

12.4

11.9

12.7

12.0

12.8

11.4

12.2

11.6

12.4

11.7

12.5

10.8

11.6

11.0

11.8

11.0

11.8

10.7

11.4

10.6

11.3

10.7

11.4

10.6

11.3

10.5

11.2

10.5

11.2

0.62

0.63

0.61

0.62

0.60

0.61

0.70

0.71

0.65

0.66

0.65

0.66

0.79

0.80

0.74

0.75

0.72

0.73

0.90

0.92

0.83

0.85

0.81

0.83

1.03

1.05

0.95

0.97

0.93

0.95

1.18

1.20

1.10

1.12

1.08

1.10

1.26

1.28

1.18

1.20

1.15

1.17

1.34

1.36

1.26

1.28

1.23

1.25

1.50

1.53

1.43

1.46

1.40

1.43

1.70

1.73

1.63

1.66

1.60

1.63

1.95

1.99

1.85

1.88

1.82

1.85

24.1

24.6

24.3

24.8

24.4

24.9

25.4

24.9

25.4

25.0

25.5

24.8

25.3

24.8

25.3

24.8

25.3

24.1

24.6

24.4

24.9

24.4

24.9

23.2

23.6

23.5

24.0

23.6

24.1

22.1

22.5

22.6

23.0

22.7

23.1

21.7

22.1

22.5

22.2

22.6

21.3

21.7

21.5

21.9

21.6

22.0

20.3

20.7

20.5

20.9

20.6

21.0

19.8

20.2

19.8

20.2

19.9

20.3

19.6

20.0

19.5

19.9

19.5

19.9

35.6

35.7

36.6

37.3

37.4

32.3

32.4

35.1

35.2

35.3

28.0

28.1

30.3

30.4

31.1

31.2

23.4

26.0

25.9

26.8

26.6

19.0

21.4

21.3

22.0

15.3

15.4

17.1

17.6

13.8

15.3

15.8

15.9

12.5

13.7

14.1

14.2

10.1

10.9

11.3

8.2

10.2

11.6

11.9

12.3

12.6

12.5

12.8

14.1

14.5

14.8

15.2

15.0

15.4

16.4

16.9

17.3

17.8

17.5

18.0

19.0

19.5

19.9

20.4

20.0

20.6

21.4

22.0

22.4

23.0

22.7

23.3

22.7

23.3

23.7

24.4

24.0

24.7

23.9

24.6

25.1

25.8

25.4

26.1

0.7

0.6

1.1

1.0

0.9

1.4

1.5

1.3

1.4

1.2

1.8

1.6

1.7

1.5

2.0

1.8

1.9

1.7

2.4

2.5

1.9

2.0

1.8

2.4

2.5

2.2

2.3

2.0

2.7

2.8

2.5

2.2

2.3

3.0

2.7

2.4

2.5

100

110

8.2

8.7

9.0

6.6

7.1

110

Operation not recommended

110

120

7.2

7.3

120

Interpolation is permissible; extrapolation is not.

All entering air conditions are 80°F DB and 67°F WB in cooling, and 70°F DB in heating. ARI/ISO certiﬁed conditions are 80.6°F DB and

66.2°F WB in cooling and 68°F DB in heating.

Table does not reﬂect fan or pump power corrections for ARI/ISO conditions.

All performance is based upon the lower voltage of dual voltage rated units.

Operation below 40°F EWT is based upon a 15% antifreeze solution.

Operation below 60°F EWT requires optional insulated water/refrigerant circuit (standard on residential models).

See performance correction tables for operating conditions other than those listed above.

“-” HWG operation is limited by a discharge temperature switch.

Carrier Indoor & Outdoor Split Geothermal Heat Pumps - Rev.: 08/10/05

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GT-PX

50YDS026 Full Load With FV4003

850 CFM Nominal (Rated) Airﬂow Cooling, 850 CFM Nominal (Rated) Airﬂow Heating

Performance capacities shown in thousands of Btuh

WPD

Cooling - EAT 80/67°F

Heating - EAT 70°F

EWT

°F

GPM

Airﬂow

CFM

PSI

HR EER HWC HC

LAT COP HWC

8.00

4.00

6.00

8.00

4.00

6.00

8.00

4.00

6.00

8.00

4.00

6.00

8.00

4.00

6.00

8.00

4.00

6.00

8.00

4.00

6.00

8.00

4.00

6.00

8.00

4.00

6.00

8.00

4.00

6.00

8.00

4.00

6.00

8.00

5.6

1.5

3.1

5.1

1.4

2.8

4.6

1.3

2.6

4.3

1.2

2.5

4.0

1.1

2.3

3.8

1.0

2.2

3.5

1.0

2.1

3.4

1.0

2.1

3.4

1.0

2.0

3.2

0.9

1.9

3.1

0.9

1.8

3.0

12.9

3.5

7.2

11.8

3.2

6.5

10.6

3.0

6.0

9.9

2.8

5.8

9.2

2.5

5.3

8.8

2.3

5.1

8.1

2.3

4.9

7.9

2.3

4.9

7.9

2.3

4.6

7.4

2.1

4.4

7.2

2.1

4.2

6.9

750

880

750

880

750

880

750

880

750

880

750

880

750

880

750

880

750

880

750

880

750

880

750

880

750

880

750

880

750

880

750

880

750

880

750

880

750

880

750

880

750

880

750

880

750

880

750

880

750

880

750

880

750

880

750

880

750

880

750

880

750

880

750

880

750

880

750

880

14.9

15.1

17.6

17.9

18.5

18.8

18.9

19.2

21.1

21.4

22.1

22.4

22.6

22.9

24.2

24.6

25.2

25.6

25.8

26.2

27.1

27.5

28.1

28.5

28.7

29.1

29.8

30.2

30.7

31.2

31.3

31.8

32.1

32.6

33.3

33.8

34.3

33.3

33.8

34.5

35.0

35.1

35.6

34.5

35.0

35.7

36.2

36.3

36.8

1.54

1.49

1.60

1.55

1.61

1.56

1.62

1.57

1.67

1.62

1.69

1.64

1.71

1.66

1.74

1.69

1.78

1.72

1.80

1.74

1.83

1.77

1.86

1.80

1.87

1.81

1.90

1.84

1.93

1.87

1.95

1.89

1.97

1.91

2.01

1.95

2.03

1.97

2.01

1.95

2.04

1.98

2.06

2.00

2.04

1.98

2.08

2.02

2.11

2.04

9.8

10.1

12.4

12.7

13.2

13.5

13.9

15.5

15.9

16.4

16.8

16.9

17.3

18.3

18.8

19.3

19.8

19.7

20.2

20.9

21.5

21.8

22.4

22.3

22.9

23.3

23.9

24.2

24.8

24.6

25.3

25.4

26.1

26.4

27.1

26.9

27.6

26.5

27.2

27.5

28.2

28.0

28.7

27.6

28.3

28.5

29.3

29.0

29.8

88.4

85.9

91.7

88.8

92.8

89.8

93.3

90.2

96.0

92.5

97.3

93.6

97.9

94.1

99.9

95.9

101.1

96.9

101.9

97.6

103.5

98.9

104.7

100.0

105.4

100.6

106.8

101.8

107.9

102.8

108.6

103.5

109.6

104.3

111.1

105.6

111.7

106.1

111.1

105.6

112.6

106.8

113.3

107.5

112.6

106.8

114.1

108.1

114.8

108.7

2.84

2.97

3.22

3.38

3.37

3.53

3.42

3.58

3.70

3.87

3.83

4.00

3.87

4.04

4.08

4.27

4.15

4.36

4.20

4.41

4.34

4.55

4.43

4.64

4.50

4.71

4.60

4.81

4.66

4.89

4.70

4.93

4.78

5.00

4.86

5.08

4.88

5.10

4.86

5.08

4.96

5.18

4.99

5.22

4.96

5.18

5.03

5.25

5.04

5.29

2.4

2.1

2.4

2.1

2.4

2.1

2.4

2.1

2.5

2.2

2.5

2.2

2.4

2.1

2.6

2.3

2.6

2.3

2.6

2.2

2.8

2.5

2.8

2.4

2.7

2.4

3.1

2.7

3.0

2.6

3.0

2.6

3.4

2.9

3.3

2.9

3.3

2.8

3.6

3.1

3.5

3.1

3.5

3.0

3.7

3.3

3.7

3.2

3.6

3.1

Operation not recommended

29.4

29.9

29.6

30.1

29.8

30.3

29.2

29.7

29.4

29.9

29.5

30.0

28.4

28.9

29.4

29.1

29.6

27.2

27.7

27.9

28.4

28.2

28.7

25.8

26.3

26.6

27.1

27.0

27.5

24.4

24.8

25.2

25.6

25.5

26.0

23.5

23.9

24.4

24.8

25.2

22.7

23.1

23.6

24.0

24.4

21.1

21.5

21.9

22.3

22.7

19.7

20.0

20.3

20.7

20.6

21.0

18.3

18.6

18.9

19.2

19.5

18.4

19.8

18.4

19.8

18.5

19.9

19.0

20.4

19.0

20.4

19.0

20.4

19.2

20.6

19.2

20.7

19.2

20.7

18.9

20.3

19.2

20.6

19.2

20.7

18.4

19.8

18.8

20.2

19.0

20.4

17.9

19.2

18.2

19.6

18.4

19.8

17.5

18.8

17.9

19.2

18.0

19.4

17.1

18.4

17.6

18.9

17.8

19.1

16.5

17.7

16.8

18.1

17.0

18.3

15.9

17.1

16.2

17.4

16.4

17.6

15.5

16.7

15.7

16.9

15.8

17.0

1.09

1.15

1.04

1.10

1.01

1.07

1.18

1.25

1.13

1.19

1.10

1.16

1.30

1.37

1.23

1.30

1.19

1.26

1.42

1.50

1.34

1.42

1.32

1.39

1.56

1.65

1.49

1.57

1.44

1.52

1.72

1.82

1.64

1.73

1.59

1.68

1.82

1.92

1.72

1.82

1.68

1.77

1.90

2.01

1.81

1.91

1.76

1.86

2.11

2.23

2.00

2.11

1.95

2.06

2.34

2.47

2.21

2.34

2.16

2.28

2.59

2.74

2.46

2.60

2.40

2.54

32.6

33.8

32.6

33.8

32.7

33.9

32.7

33.9

32.8

34.0

32.8

34.0

32.3

33.5

32.6

33.8

32.7

33.9

31.7

32.9

32.1

33.3

32.2

33.4

30.9

32.0

31.4

32.5

31.6

32.7

29.9

31.0

30.4

31.5

30.6

31.7

29.4

30.5

29.9

31.0

30.1

31.2

29.0

30.0

29.4

30.5

29.6

30.7

28.1

29.1

28.5

29.5

28.7

29.7

27.4

28.4

27.7

28.7

27.8

28.8

27.0

28.0

27.1

28.1

27.2

28.2

27.0

26.0

28.5

27.4

29.5

28.3

24.7

23.8

26.0

25.1

26.8

25.9

21.8

21.1

23.5

22.6

24.5

23.5

19.2

18.5

20.8

20.0

21.4

20.6

16.5

15.9

17.9

17.3

18.8

18.1

14.2

13.6

15.4

14.8

16.0

15.5

12.9

12.4

14.2

13.6

14.8

14.2

11.9

11.5

13.0

12.6

13.6

13.1

10.0

9.6

1.1

1.0

0.9

1.5

1.6

1.3

1.4

1.1

1.2

2.0

2.1

1.8

1.5

2.6

2.2

2.3

1.9

2.9

3.0

2.5

2.6

2.1

3.2

3.3

2.8

2.3

3.9

4.0

3.4

2.8

4.7

4.8

4.0

4.1

3.3

3.4

5.6

5.7

4.7

4.8

3.9

4.0

100

11.0

10.6

11.4

11.0

8.4

8.1

9.2

8.8

9.5

9.2

7.1

6.8

7.7

7.4

8.0

7.7

100

110

Operation not recommended

110

120

Interpolation is permissible; extrapolation is not.

All entering air conditions are 80°F DB and 67°F WB in cooling, and 70°F DB in heating. ARI/ISO certiﬁed conditions are 80.6°F DB and 66.2°F

WB in cooling and 68°F DB in heating.