Carrier GT-PX, GT-S, GT-G specifications Equipment Selection, Air Handler Characteristics

Equipment Selection

Indoor & Outdoor Split Geothermal Comfort Systems

GTTable-PX1b:AirSelectionHandler Characteristicsof Coils other thanfor BrandsAbove ModelsotherthanforAbovePuron®ModelsGeothermal Split Systems

						Add-on CK5P	FX4 PSC
	Model*	Nominal	Evaporator	CFM	Capacity	Coil with TXV	Fan Coil
		Tons*	Temp (ºF)		(MBtuh)**	AND Vspd	(not an ARI rated
						furn.	combination)
026	- Part Load	1.5	50	530	19.2 - 22.4	A/T/W 036	018
026	- Full Load	2.0	52	880	24.2 - 28.2	A/T/W 036	030
038	- Part Load	2.5	51	700	25.2 - 29.2	A/T/W 048	036
038	- Full Load	3.0	50	1200	34.5 - 40.1	A/T 060	036
049	- Part Load	3.5	47	1000	34.3 - 39.9	A/T 060	042
049	- Full Load	4.0	48	1650	46.3 - 53.8	X060	048
064	- Full Load	5.0	48	1850	54.5 - 63.3	2 - A/T/W 036	060

*Nominal tons are at ARI/ISO 13256-1 GLHP conditions. Two-stage units may be operated in single-stage mode if desired, where smaller capacity is required. For example, a model 026 may be used as a 1-1/2 ton unit if “locked” into 1st stage operation only. If PSC fan is used, unit must be “locked” into either 1st or 2nd stage. An ECM fan is required for two-stage

operation and for ARI ratings. Size air handler for “Full Load” if operating in two-stage mode.

**When selecting an air handler based upon the above conditions, choose entering WB temperature of 67ºF. Use evaporator temperature, CFM and capacity requirements as listed above. The air handler capacity must be at least at the minimum capacity shown in the table in order for the ARI rating condition to be valid. See Figure 1 for an example selection.

Indoor Coil Selection - R-22 Units Geothermal split system heat pumps with R-22 refrigerant are rated in the ARI directory with a “generic” indoor coil match and PSC fan. Selection of air handlers that attain the published ARI ratings must meet or exceed the specifications listed in Table 2. A TXV is required. Cap tubes and fixed orifices are not acceptable.

Table 2: R-22 Air Handler Characteristics
R-22 Air	Handler Characteristics
		Nominal	Evaporator		Capacity
Model*		Tons*	Temp (ºF)	CFM	(MBtuh)**
018		1.5	50	600	18.5 - 21.3
024		2.0	47	800	25.5 - 29.3
030		2.5	49	1000	31.5 - 36.2
036		3.0	48	1200	37.0 - 42.5
042		3.5	45	1400	42.2 - 48.5
048		4.0	46	1600	50.0 - 57.5
060		5.0	45	2000	58.0 - 66.7

* Nominal tons are at ARI/ISO 13256-1 GLHP conditions.

**When selecting an air handler based upon the above conditions, choose entering WB temperature of 67ºF. Use evaporator temperature, CFM and capacity requirements as listed above. The air handler capacity must be at least at the minimum capacity shown in the table in order for the ARI rating condition to be valid. See Figure 1 for an example selection.

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

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