21
APPLICATION DATA
Condensate trap
— A 2--in. (51 mm) condensate trap must be
field supplied.
1” (25 mm) MIN.
2” (51 mm) MIN.
TRAP
OUTLET
A08001
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.
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. Airlow can be lower in certain modes
when humidity removal is an issue however, low airflow could
result in indoor coil freezing and/or refrigerant floodback.
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).
50V
T
