Application Data; Balance Point Worksheet - Payne PH3G----A Product Data

APPLICATION DATA

Condensate trap — A 2- -in. (51 mm) condensate trap must be
field supplied.
Ductwork — Secure downflow discharge ductwork to roof curb.
For horizontal discharge applications, attach ductwork to unit with
flanges.
To convert a unit to downflow discharge — Units are equipped
with factory- -installed inserts in the downflow openings. Removal
of the inserts is similar to removing an electrical knock- -out. Units
installed in horizontal discharge orientation do not require duct
covers.

BALANCE POINT WORKSHEET

70
60
50
40
30
20
10
0
-20 -10 0 10 20
OUTDOOR TEMPERATURE, ºF
Maximum cooling airflow — To minimize the possibility of
condensate blow- -off from the evaporator, airflow through the units
should not exceed 450 CFM per ton.
Minimum cooling airflow — Minimum cooling airflow is 350
cfm per ton in cooling mode. Airflow can be lower in certain
modes when humidity removal is an issue.
Minimum ambient cooling operation temperature — All
standard units have a minimum ambient cooling operating
temperature of 40_F (4.4_C). With accessory low ambient
temperature kit, units can operate at temperatures down to 0_F
(- -17.8_C).
Maximum operating outdoor air temperature for cooling is
125_F (51.7_C).
BASED ON INDOOR ENT. AIR AT
70 ºF AND AT RATED CFM
30 40
21
60
48
42
36
30
24
50 60 70
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