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The Quality Leader in Conditioning Air
Residential Split - 60Hz R22 &R410A
Rev.: 5 June, 2008
www.heatcontoller.com
Table 1b: GeoMax 2 (H
T
S) Air Handler Characteristics for Brands other than Above Models
Model*
Nominal
Tons*
Evaporator
Temp (ºF)
CFM
Capacity
(MBtuh)**
024 - Part Load 1.5 50 530 19.2 - 22.4
024 - Full Load 2.0 52 880 24.2 - 28.2
036 - Part Load 2.5 51 700 25.2 - 29.2
036 - Full Load 3.0 50 1200 34.5 - 40.1
048 - Part Load 3.5 47 1000 34.3 - 39.9
048 - Full Load 4.0 48 1650 46.3 - 53.8
060 - Full Load 5.0 48 1850 54.5 - 63.3
* 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 - For HSS 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
Model*
Nominal
Tons*
Evaporator
Temp (ºF)
CFM
Capacity
(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.
Equipment Selection