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5.1 AIRFLOW OPERATING LIMITS
Cabinet Width
Cooling BTUH x 1,000
Cooling Tons Nominal
Heat Pump or Air Conditioning
Maximum Heat/Cool CFM [L/s]
(37.5 CFM [18 L/s]/1,000 BTUH)
(450 CFM [212 L/s]/Ton Nominal)
Heat Pump or Air Conditioning
Nominal Heat/Cool CFM [L/s]
(33.3 CFM [16 L/s]/1,000 BTUH)
(400 CFM [189 L/s]/Ton Nominal)
Heat Pump or Air Conditioning
Minimum Heat/Cool CFM [L/s]
(30.0 CFM [14 L/s]/1,200 BTUH)
(360 CFM [170 L/s]/Ton Nominal)
Maximum kW Electric Heating
& Minimum Electric Heat CFM [L/s]
Maximum Electric Heat Rise °F [°C]
26
5.0 AIRFLOW PERFORMANCE
Airflow performance data is based on cooling performance with a coil and no filter in place.
Select performance table for appropriate unit size, voltage and number of electric heaters to
be used. Make sure external static applied to unit allows operation within the minimum and
maximum limits shown in table below for both cooling and electric heat operation. For opti-
mum blower performance, operate the unit in the .3 to .7 in W.C. external static range. Units
with coils should be applied with a minimum of .1 in W.C. external static.
17
18
24
30
1.5
2
2.5
675
900
1125
[319]
[425]
[531]
600
800
1000
[283]
[378]
[472]
540
720
900
[255]
[340]
[425]
13
13
18
487 [230]
617 [291]
814 [384]
80 [26.7]
63 [17.2]
66 [18.9]
17/21
21
36
42
3
3.5
1350
1575
[637]
[743]
1200
1400
[566]
[661]
1080
1260
[510]
[595]
18
20
1054 [497]
1171 [553]
1502 [709]
51 [10.6]
49 [9.4]
24
48
48
60
4
4
5
1800
1800
1930
[850]
[850]
[911]
1600
1600
1800
[755]
[755]
[850]
1440
1440
1620
[680]
[680]
[765]
25
25
30
1502 [709]
1666 [786]
50 [10]
50 [10]
54 [12.2]
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