Safety Considerations
Warning: Before performing service or maintenance
operations on a system, turn off main power switches to the
equipment. Electrical shock could cause personal injury.
Installing and servicing heating and air conditioning equipment can
be hazardous due to system pressure and electrical components.
Only trained and qualified service personnel should install, repair
or service heating and air conditioning equipment. Untrained
personnel can perform the basic maintenance functions of cleaning
coils and cleaning and replacing filters. All other operations should
be performed by trained service personnel. When working on
heating and air conditioning equipment, observe precautions in
the literature, tags and labels attached to the unit and other safety
precautions that may apply.
Follow all safety codes. Wear safety glasses and work gloves.
Use a quenching cloth for brazing operations and have a fire
extinguisher available.
Note: Local codes and regulations take precedent over any
recommendations by the manufacturer. In addition to conforming to
manufacturer’s and local municipal building codes, the equipment
should also be installed in accordance with the National Electric
Code and National Fire Protection Agency recommendations.
5
General Installation Information
Physical Data
ASTON SERIES AIR HANDLER INSTALLATION MANUAL
GAH022
GAH026
GAH030
GAH036
GAH042
GAH048
GAH060
Air Coil Total Face Area, ft2 [m2]
Tube outside diameter - in. [mm]
Number of rows
Fins per inch
Suction line connection - in. [mm] sweat
Liquid line connection - in. [mm] sweat
Nominal cooling capacity - tons [kW]
1.8 [6.44]
2.1 [7.59]
2.5 [8.79]
3 [10.55]
3.5 [12.30]
4 [14.06]
5 [17.58]
Condensate drain connection - (O.D.) in. [mm]
Blower Wheel Size (Dia x W), in. [mm]
Blower motor type/speeds
Blower motor output - hp [W]
Filter Standard - 1" [51mm] MERV3 disposable, in. [mm]
Electrical characteristics (60hz)
Shipping weight - lbs. [kg]
Operating weight - lbs. [kg]
4/28/14
GAH026
GAH036
GAH048
GAH060
Air Coil Total Face Area, ft2 [m2]
Tube outside diameter - in. [mm]
Number of rows
Fins per inch
Water In connection - in. [mm] sweat
Water Out connection - in. [mm] sweat
Nominal cooling capacity - tons [kW]
2.1 [7.59]
3 [10.55]
4 [14.06]
5 [17.58]
Condensate drain connection - (O.D) in. [mm]
Blower Wheel Size (Dia x W), in. [mm]
Blower motor type/speeds
Blower motor output - hp [W]
Filter Standard - 1" [51mm] MERV3 disposable, in. [mm]
Electrical characteristics (60hz)
Shipping weight - lbs. [kg]
Operating weight - lbs. [kg]
8/15/14
220 [99.79]
200 [90.71]
208/230 - 1ph
ECM variable speed
1/2 [373]
1 [746]
20 x 24 [508 x 635]
3/4 [19.05]
11 x 10 [279 x 254]
Air Handler Model Number (Hydronic)
Hydronic
Coil
3
7/8 [22.22]
13
7/8 [22.22]
6.94 [0.64]
3/8 [9.52]
Air Handler Model Number (Refrigerant)
Evaporator
Coil
5.83 [0.54]
3/8 [9.52]
2
3
12
5/8 [15.87]
7/8 [22.22]
3/8 [9.52]
Refrigerant
R-410a
3/4 [19.05]
11 x 10 [279 x 254]
ECM variable speed
1/2 [373]
1 [746]
20 x 24 [508 x 635]
208/230 - 1ph
215 [97.52]
220 [99.79]
195 [88.45]
200 [90.71]
Note:
Water connection dimensions are O.D.
