57
5680 011 -10
Viessmann AirflowPLUS AH2A Installation, Operating and Service
Additional Information
Technical Data
* Using the adjustable levelling feet can add up to 1
b
” (38 mm) to the height of the air handler.
Description
AH2A-213
AH2A-354
AH2A-385
Motor (ECM)
hp
g
b
c
Electrical
VOLTS/PH/HZ
120/1/60
120/1/60
120/1/60
Heating BTUH
(kW)
120°F (49°C)
28,000
(8)
44,000
(13)
51,000
(15)
140°F (60°C)
46,000
(13)
61,000
(18)
74,000
(22)
160°F (71°C)
62,000
(18)
83,000
(24)
90,000
(26)
180°F (82°C)
72,000
(21)
98,000
(29)
115,000
(33)
Flow
USG/min
(L/H)
3
(681)
5
(1135)
5
(1135)
Nominal (CFM)
Heating .5” e.s.p.
Cooling .5” e.s.p.
Heating .2” e.s.p.
Cooling .2” e.s.p.
600
700
1,100
1,200
1,200
1,400
1,300
1,600
1,600
1,800
1,900
2,100
Cooling capacity
(tons)
1.5 - 3.0
2.50 - 4.0
3.5 - 5.0
Cabinet
D x W x H* in.
(mm)
22
c
x 18 x 32
b
(578 x 457 x 825)
23 x 22 x 34
b
(584 x 559 x 876)
28 x 22 x 34
b
(711 x 559 x 876)
Supply air opening
in.
(mm)
16 x 20
(406 x 508)
20 x 20
(508 x 508)
20 x 25
(508 x 635)
Return air opening
in.
(mm)
14 x 18
(356 x 457)
18 x 18
(457 x 457)
18 x 23
(457 x 584)
Weight
lb.
kg
85
(39)
100
(45)
110
(50)
Circulating pump
Type
Grundfos 15/58RU
Volts
AC
115
115
115
Motor horsepower
hp
1/25
1/25
1/25
Capacitor
MFD/VOLTS
10/180
10/180
10/180
Motor rated amps - loaded
AMPS
0.74
0.74
0.74
- locked rotor
AMPS
4.44
4.44
4.44
Maximum working pressure
PSI
145
145
145
Min./max. fluid temperature
ºF
(ºC)
120/200
(49/93)
120/200
(49/93)
120/200
(49/93)
Hydronic heating coil
Construction
Copper tubing, aluminum fins, galvanized steel support frame
Rows...fins/in.
3...12
3...12
3...12
Total face area
sq. ft. (m
2
)
1.3 (0.12)
2.8 (0.26)
2.8 (0.26)
Piping connections
Supply
in.
b
FIP
c
FIP
c
FIP
Return
in.
b
FIP
c
FIP
c
FIP
Pressure drop through the coil
feet of head
[@ 160°F (71°C)
supply water
temperature]
12
2
2
