17 PB
SPECIFICATIONS
Blower Data (Indoor Units)
Figure 211
Airflow performance data is based on cooling performance with a coil and no filter in place. Check the
performance table for appropriate unit size selection. External static pressure should stay within the minimum
and maximum limits shown in the table below to ensure proper cooling, heating, and electric heating operation.
NOTES:
• Required 350-450 CFM/Ton range.
• When there is an electric heater, set the fan speed based on the air volume that the electric heater
needs (not less than 350 CFM/Ton).
• Airflow based upon air handler unit operates at 230 V with no electric heater kit and no filter.
Airflow at 208 V is approximately the same as 230 V.
Fan speed
Tap (2)
Default setting
Tap (3)
Tap (4)
Tap (5)
CFM
CFM
CFM
CFM
w
w
w
w
External static pressure
in.H2O [KPa]
0
(0)
0.1
(0.02)
0.18
(0.045)
0.3
(0.07)
0.4
(0.1)
0.5
(0.12)
0.6
(0.15)
0.7
(0.17)
0.8
(0.20)
815
94
862
106
792
102
828
114
752
110
792
125
709
123
735
137
859
178
705
145
853
185
803
193
895
241
769
203
864
251
735
213
825
258
779
267
• Model: WFH24Z193C
Incorporate your filter’s pressure drop into static pressure calculations. Common pressure drops are:
Merv Material Drop
4 Spunglass 0.1
8 Pleated 0.12
13 Pleated 0.25
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