8
Step 3 — Locate Unit
Locate the unit in an indoor area that allows easy removal of the
filter and access panels, and has enough room for service person-
nel to perform maintenance or repair. Provide sufficient room to
make fluid, electrical, and duct connection(s). If the unit is located
in a confined space such as a closet, provisions must be made for
return air to freely enter the space.
Unit condensate drains are not internally trapped. Allow room be-
low the unit base for horizontal models for an adequate conden-
sate trap.
These units are not approved for outdoor installation; therefore,
they must be installed inside the structure being conditioned. Do
not locate units in areas that are subject to freezing. Units must be
installed in conditioned space that is not subject to extremes of
temperature or humidity to avoid cabinet sweating and/or equip-
ment damage.
Do not use units for temporary heating, air conditioning or ventila-
tion during construction or remodeling, especially when plaster-
ing, sanding or painting or when replacing carpet or flooring. Dust
and debris can clog the coil and blower. Chemical vapors can lead
to formicary corrosion and damage the coil. Ensure adequate ven-
tilation and debris collection during construction or remodeling.
PROTECTION
Once the units are properly positioned on the jobsite, cover them
with either a shipping carton, vinyl film, or an equivalent protec-
tive covering. Cap open ends of pipes stored on the jobsite. This
precaution is especially important in areas where painting, plaster-
ing, or spraying of fireproof material, etc. is not yet complete. For-
eign material that accumulates within the units can prevent proper
start-up and require costly clean-up operations. Before installing
any of the system components, be sure to examine each pipe, fit-
ting, and valve, and remove any dirt or foreign material found in
or on these components.
Step 4 — Mount the Unit
DUCT FLANGES
The unit heat pumps feature foldout return and supply air duct
flanges. These fold-out flanges allow the heat pumps to more easi-
ly fit through doorways and other tight spaces, and also prevent
damage in shipping and handling.
It is recommended that all fold-out flanges be folded out once the
heat pump is installed to ensure that return and supply airflow is
not obstructed. These flanges can be easily folded using standard
or duckbill pliers. Once folded out these flanges can be used to
support light ductwork loads.
HORIZONTAL UNITS (50PCH)
While horizontal units may be installed on any level surface strong
enough to hold their weight, they are typically suspended above a
ceiling by threaded rods. All horizontal units come with a Hanging
Bracket Kit to facilitate suspended unit mounting. Hanging brack-
ets are installed as shown in Fig. 3.
Fig. 3 — Hanging Bracket Locations
The hanging bracket kit includes the following:
• (5) Brackets
• (5) Rubber vibration isolators
• (8) Screws #10 x
1
/
2
in.
• (10) Bolts 1/4 — 28 x
1
/
2
in. hex bolt (not used on this
model)
The following additional materials are needed and must be field-
supplied:
• Threaded rod (
3
/
8
in. maximum diameter)
• Hex nuts
• Washers (1
3
/
4
in. minimum O.D.)
Hanging Bracket Installation
1. Remove and discard factory-provided screws from location
where hanging brackets will be installed. See Fig. 4.
Fig. 4 — Removing Factory Screws
2. Mount 4 brackets to unit corner post using the bolts provided
in the kit, as shown in Fig. 5. DO NOT re-use the screws
removed from the unit during Step 1 to mount the hanging
brackets on the unit.
Fig. 5 — Mounting Brackets
IMPORTANT: Care must be taken to prevent the introduction
of dust, pain, debris, or chemicals into the unit, which can
cause damage to the unit, delay start-up, and may impact unit
longevity.