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Rigging & Setting Unit
Exercise care when moving the unit. Do not remove any
packaging until unit is near the place of installation. A sling
assembly may be used to lift the unit. Spreaders which are
longer than the largest dimension across unit MUST be
used across the top of the unit.
CAUTION
Before lifting a unit, make sure that the weight is dis
tributed equally on the cables so that it will lift evenly.
Units may also be moved or lifted with a forklift while still in
the factory supplied packaging.
FORKS MUST BE A MINIMUM OF 42 INCHES LONG.
NOTE − Do not permit overhanging structures or shrubs to
obstruct condenser air discharge outlet or inlet.
The unit is designed to be located outdoors with sufficient
clearance for free entrance to air inlet and discharge. Loca
tion must also allow for adequate service access.
Specially designed roof curbs are available for these
units. Using any other roof curb may result in water leaking
into conditioned space. The specified roof curb is de
signed to allow water from the bottom of the condensing
coil to run off.
The unit must be installed on a solid foundation that will not
settle or shift. Adequate structural support must be pro
vided. Maintain minimum clearances as shown in illustra
tion and install unit in level position. Isolate the base from
the building structure to avoid possible transmission of
sound or vibration into conditioned space.
Unit foundation should be raised to a minimum of 3" above
finish grade. In areas which have prolonged periods of tem
perature below freezing and snowfall, the unit should be
elevated above the average snow line. Also extra precau
tion should be taken to allow free drainage of condensate
from defrost cycles to prevent ice accumulation. Unit
should not be located near walkways to prevent possible
icing of surface from defrost condensate.
Avoid placing unit near quiet areas, i.e. sleeping quarters or
study rooms. Normal operating sound levels may be objec
tionable if the unit is placed near certain rooms.
Condensate Drain
The packaged heat pumps are equipped with a 3/4" fpt
coupling for condensate line connection. The drain line
must be properly trapped and routed to a suitable drain.
See illustration for proper drain arrangement. The drain
line must pitch to an open drain or pump to prevent clog
ging of the line.
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UNIT
Minimum Pitch
1" (25 mm) per 10’
(3 m) of line
MOUNTING
FRAME
FIGURE 3
OPEN
VENT
Trap must be deep enough to offset maximum
static difference (Generally, 3 inches minimum).
TYPICAL CONDENSATE DRAIN
Filters
No filters are supplied with the unit. Filters must be
installed ahead of the evaporator coil and must be cleaned
or replaced as necessary. Dirty filters will reduce the air
flow of the unit. Filters should be sized in accordance with
Table 1 below.
TABLE 1
FILTER SIZES
UNIT MODEL
FILTER SIZE
12CHP−024, −030
24" X 25"
12CHP−036, −042, −048, −060
30" X 30"
Supply & Return Connections
Duct system should be designed and sized according to
the methods in Manual Q of the Air Conditioning Contrac
tors of America (ACCA).
A closed return duct system shall be used. This shall not
preclude use of economizers or outdoor fresh air intake. It
is recommended that supply and return duct connections
at the unit be made with flexible joints.
The supply and return air duct systems should be de
signed for the CFM and static requirements of the job.
They should NOT be sized to match the dimensions of
the duct connections on the unit.
CAUTION
When fastening duct system to side duct flanges on
unit, insert screws through duct flanges only. Do not
insert screws through casing. Outdoor duct must be
insulated and waterproofed.
