Installation manual

Safety Considerations
Warning: Before performing service or maintenance op-
erations on a system, turn off main power switches to the
equipment. Electrical shock could cause personal injury.
Installing and servicing heating and air conditioning equip-
ment can be hazardous due to system pressure and elec-
trical 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 clean-
ing and replacing filters. All other operations should be
performed by trained service personnel. When working on
heating and air conditioning equipment, observe precau-
tions 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
ENVISION AIR HANDLER INSTALLATION MANUAL
NAH022 NAH026 NAH030 NAH036 NAH042 NAH048 NAH060
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 - (FPT) 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]
1/11/08
NAH026 NAH036 NAH048 NAH060
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 - (FPT) 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]
3/11/08
220 [99.79]
200 [90.71]
208/230 - 1ph
Variable Speed ECM
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]
23
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]
Variable Speed ECM
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.
General Installation Information
Physical Data