Payne PH1S - Application Data; Operating Limits; General Application Guidelines

TYPICAL CONTROL WIRING SCHEMATIC (cont)
APPLICATION DATA
OPERATING LIMITS
Maximum cooling load ...........................115F
Minimum return-air temperature ....................55F
Maximum return-air temperature ....................95F
Maximum outdoor-air operating
temperature in heating ..........................75F
Minimum outdoor-air operating
temperature in heating ........................−20F
Range of acceptable saturation suction
temperature..............................25to55F
Maximum discharge temperature ..................275F
Minimum discharge superheat .....................60°F
Maximum indoor unit fan speed ................1200 rpm
GENERAL
Select equipment to match or to be slightly less than peak load.
This provides better humidity control, less unit cycling, and less
part-load operation. Equipment should be selected to perform at
no less than 300 cfm/ton.
The indoor unit fan must always be operating when the outdoor
unit is operating.
Ductwork should be sized according to indoor unit size, not
building load.
PF1B
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