53
8. UNIT SELECTION
OUTDOOR UNITS
<Capacity requirement calculation flow chart>
Obtain the thermal load (Qi).
Correct for the indoor unit return air temperature.
Determine the capacity for each indoor unit.
Calculate the total indoor unit capacity (N).
Finish
(calculations to be done for both cooling and heating)
Select the outdoor unit capacity (X).
Select the outdoor unit one rank higher
in capacity.
Apportion the corrected outdoor unit capacity (Qm)
to each indoor unit.
Multiply the apportioned capacity by the indoor
unit temperature correction factor, and make sure it
is equal to or greater than the thermal load.
Thermal load Qi > Corrected capacity Qm
YES
NO
Correct the standard outdoor unit capacity (Qs)
for outside air temperature and piping length to
obtain the corrected capacity (Qm).
Summary of Contents for PUHY-RP-Y(S)JM-B
Page 1: ...DATA BOOK AIR CONDITIONERS MODEL PUHY RP Y S JM B PURY RP YJM B ...
Page 3: ......
Page 63: ...60 OUTDOOR UNITS ...
Page 191: ...188 INDOOR UNITS ...
Page 243: ...240 SYSTEM DESIGN ...
Page 287: ...284 SYSTEM DESIGN ...