ClimateMaster GT-PX Indoor Split Series Installation Manual download pdf (Page 6)

Equipment Selection

oil Match-u

Residential Split Units - 60Hz Puron

Rev.: 6 Dec., 2011

The installation of geothermal heat pump units and all

associated components, parts, and accessories which make

up the installation shall be in accordance with the regulations

of ALL authorities having jurisdiction and MUST conform to

all applicable codes. It is the responsibility of the installing

contractor to determine and comply with ALL applicable

codes and regulations.

General

Proper indoor coil selection is critical to system efÄ ciency.

Using an older-model coil can affect efÄ ciency and may

not provide the customer with rated or advertised EER

and COP. Coil design and technology have dramatically

improved operating efÄ ciency and capacity in the past 20

years. Homeowners using an older coil are not reaping these

cost savings and comfort beneÄ ts. NEVER MATCH AN R-22

INDOOR COIL WITH A PURON

COMPRESSOR SECTION.

Newer indoor coils have a larger surface area, enhanced Ä n

design, and grooved tubing. These features provide a larger

area for heat transfer, improving efÄ ciency and expanding

capacity. Typical older coils may only have one-third to one-

half the face area of these redesigned coils.

Indoor Coil Selection - GT-PX & GT-PE (50YDS & YPS)

Split system heat pumps are rated in the AHRI directory with

a speciÄ c indoor coil match. GT-PX and GT-PE models are

rated with Carrier/Bryant FV4 or FE4 series variable speed

air handlers as shown in Table 1a. Other brands of air

handlers may attain the same AHRI ratings providing that the

speciÄ cations meet or exceed those listed in Table 1a AND

Table 1b. An ECM motor and TXV is required. Cap tubes

and Ä xed oriÄ ces are not acceptable. PSC fans may be

used if matched to Table 1c, but will not meet AHRI ratings.

If using PSC fan, compressor section must be operated

as a single stage unit (i.e. wired for either 1st stage or 2nd

stage). Without the ability to vary the airÅ ow, supply air

temperatures may not be acceptable if the compressor is

allowed to change stages when used with a PSC fan motor.

Table 1a: GT-PX & GT-PE Carrier/Bryant Air Handler Matches for AHRI Ratings

Compressor Section 026 038 049 064

Air Handler

Model FV4

003 005 006 006

Refrigerant Puron

Metering Device TXV (required)

Air Coil

Type

Rows - Fins/in.

Face Area (sq. ft.)

Slope

3 - 14.5

3.46

3 - 14.5

5.93

3 - 14.5

7.42

3 - 14.5

7.42

Cabinet ConÄ gura-

tion

UpÅ ow/DownÅ ow/Horizontal (Multipoise)

ECM Settings for

AHRI Ratings

(FV4 Fan Coil)

AC/HP size: 036

System Type:

Comfort AC/HP

CFM Adjust: Nom

AC/HP size: 036

System Type:

HP-EfÄ c AC/HP

CFM Adjust: High

AC/HP size: 048

System Type:

Comfort AC/HP

CFM Adjust: High

AC/HP size: 060

System Type:

Comfort AC/HP

CFM Adjust: High

Fan Motor Type - HP ECM - 1/2 ECM - 1/2 ECM - 3/4 ECM - 3/4

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ClimateMaster GT-PX Indoor Split Series Installation Manual Page 6

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