GPCH3 Installation Manual
4
The unit includes a hermetically sealed refrigerating system
necessary internal electrical wiring. The heat pump also
includes a reversing valve, solenoid, defrost thermostat and
control and loss of charge protection. The system is factory-
evacuated, charged and performance tested. Refrigerant
amount and type are indicated on rating plate.
should be considered:
• Structural strength of supporting members
• Clearances and provision for servicing
• Power supply and wiring
• Air duct connections
• Drain facilities and connections
• Location may be on any four sides of a home,
manufactured or modular, to minimize noise
The unit is designed to be located outside the building
with unobstructed condenser air inlet and discharge.
Additionally, the unit must be situated to permit access
for service and installation. Condenser air enters from
three sides. Air discharges upward from the top of the
unit. Refrigerant gauge connections are made on the right
side of the unit as you face the compressor compartment.
Electrical connections can be made either on the right or left
sides of the unit. The best and most common application is
the connection side facing the wall. This “close to the wall”
application minimizes exposed wiring.
Close to the wall application assures free, unobstructed air
such as corners provide a minimum 10” clearance on all
air inlet sides. Allow 18” minimum for service access to
the compressor compartment and controls. The top of the
unit should be completely unobstructed. If units are to be
located under an overhang, there should be a minimum
discharge air out from the overhang.
space and any adjacent occupied space. It is recommended
that the unit be placed so that condenser air discharge does
not blow toward windows less than 25 feet away.
The unit should be set on a solid, level foundation - preferably
a concrete slab at least 4 inches thick. The slab should be
above ground level and surrounded by a graveled area for
good drainage. Any slab used as a unit’s foundation should
not adjoin the building as it is possible that sound and
vibration may be transmitted to the structure. For rooftop
installation, steel or treated wood beams should be used as
unit support for load distribution.
Heat pumps require special location consideration in areas
of heavy snow accumulation and/or areas with prolonged
continuous subfreezing temperatures. Heat pump unit
bases have holes under the outdoor coil to permit drainage
of defrost water accumulation. The unit must be situated
to permit free unobstructed drainage of the defrost water
and ice. A minimum 2” clearance under the outdoor coil is
required in the milder climates.
1. The unit must be mounted on a solid, level foundation.
2. Select a location that will minimize the length of the
supply and return ducts.
3. Select a location where external water drainage
cannot collect around the unit.
4. Consideration should also be given to shade,
appearance and noise.
36"
36"
10"
36"
1.
the strength of the roof and beams is adequate to
installer’s responsibility.
2. Make proper consideration for the weather–tight
integrity of the roof and proper drainage of condensate.
3. To ensure proper condensate drainage, unit must be
installed in a level position.
4. Consideration should also be given to shade,
appearance and noise.