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of electric power, service access, noise, and
shade. Sufficient clearance for unobstructed
airflow through the outdoor coil must be
maintained in order to achieve rated performance
See Figure 3 for minimum clearances to
obstructions.
Air Filter
Requirements — Three phase
units "Only" are supplied from the factory with
an internal filter rack assembly. Air filters are
not supplied; a suitable air filter must be installed
in the unit or in the return air system for all units.
See Table 1 for internal filter size requirements.
When utilizing an Economizer or Fresh Air
Equipment, the factory installed filter rack
assembly must be removed prior to installation.
Air filter pressure drop must not exceed 0.08
inches WC. Air filter(s) must be installed in the
return air ductwork ahead of the evaporator
coil of this unit. All return air to this unit must
pass through the filter(s) before entering this
unit. (See Routine Maintenance for Installation/
Removal of air filters).
UNIT SIZE
R
4GA 024-042, R4BC 024
P4SA 036, P4SA 048
P4SC 036, Q4SA 036
R4GA 048-060, R4GC 030-042
P4SA 060, P4SC 048-060,
Q4SA 048-060, Q4SC-048-060
R4GC 048-060
R4GM 024-072
Q4SC 048-060
Table 1. Internal Filter Size Requirements.
Removal of Internal Filter Rack — First
remove the Return Air Panel from the unit.
Remove the height adjustment screw from the
inside of the rack, and the (1) screw securing
the assembly to the coil located on the left leg
of the rack. The assembly can easily be
collapsed and removed from the unit. See
Figure 3a for filter rack securing screw
locations.
For single phase downflow installations only,
an internal filter accessory kit can be ordered.
For horizontal installations, the air filter system
must be installed in the return air ductwork. All
return air to this unit must pass through the
filter(s) before entering the evaporator coil.
Condensate Drain — Condensate is removed
from the unit through the 3/4" female pipe fitting
4
Figure 3a. Internal Filter Rack Location
located on the front side of the unit. (See Figure
4.) Install a 2 inch condensate trap in the drain
line of the same size and prime with water. When
connecting rigid drain line, hold the female fitting
with a wrench to prevent twisting. Do not over
tighten! Refer to local codes and restrictions
for proper condensate disposal requirements.
INTERNAL FILTER
SIZE
UNIT INSTALLATION
(2) 14" x 25" x 1"
Ground Level — When installing the unit at
or
ground level, provide a concrete mounting
(2) 14" x 25" x 2"
pad separate from the building foundation.
(2) 16" x 25" x 1"
The pad must be level to insure proper
or
condensate disposal and strong enough to
(2) 16" x 25" x 2"
support the unit's weight. Refer to Figure 2 .
Make sure the slab is a minimum of 2" above
(2) 18" x 25" x 1"
the grade and in an area that drains well.
or
(2) 18" x 25" x 2"
To avoid the risk of property damage or
personal injury; it is the rigger's
responsibility to insure that whatever
means are used to hoist the unit are
safe and adequate.
All panels must be securely in place
when rigging and hoisting.
Rigging and Hoisting — The unit should be
lifted using slings and spreader bars. The
spreader bars are necessary to prevent
damaging the top of the unit's cabinet. Make
sure that the lifting equipment is adequate for
Securing
Screw
WARNING:
!
!
CAUTION:
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