5
HEAT PUMP INSTALLATION
Unpacking the Unit
It is recommended that the unit be unpacked
at the installation site to minimize damage due
to handling.
CAUTION:
Do not tip the unit on its side.
Oil may enter the compressor
cylinders and cause starting
trouble. If unit has been set on its
side, restore to upright position
and do not run for several hours.
Then run unit for a few seconds.
Do this three or four times with fi ve
minutes between runs.
1. Remove the bands from around the unit.
2. Unfold the top and bottom cap fl anges.
3. Carefully remove the top cap and tube.
Minimum Clearances
Minimum clearances MUST be maintained from
adjacent structures to provide room for proper
servicing and air circulation. DO NOT install unit
in a confi ned or recessed area that will allow
discharge air from the unit to re-circulate into the
condenser air inlet, through the coil. See Figure 2.
Service Access Clearance:
Blower access panel side ...........................24”
Electrical compartment access panel side ... 12”
Clearance between overhang and top
of unit ..................................................... 72”
Clearance around condenser coil area to
wall or shrubs (excludes duct panel side) ...12”
Clearances to Combustibles:
Combustible base - wood or Class A, B, or C
roof covering material ................................. 0”
Supply & return air ducts ............................. 0”
Duct connection side ................................... 0”
Figure 2. Minimum Unit Clearances
12"
12"
24"
T
OP OF UNIT
T
O
BE
UNOBSTR
UCTED
0"
Air Duct System
Air ducts should be installed in accordance with
the standards of the National Fire Protection
Association “Standard for Installation of Air
Conditioning and Ventilation Systems” (NFPA
90A), “Standard for Installation of Residence
Type Warm Air Heating and Air Conditioning
Systems” (NFPA 90B), these instructions, and all
applicable codes. NFPA publications are available
by writing to: National Fire Protection Association,
Batterymarch Park, Quincy, ME 02269 or visit
www.NFPA.org on the web.
• Design the duct work according to methods
described by the Air Conditioning Contractors
of America (ACCA).
• The supply duct system, including the number
and type of registers, will have much more
effect on the performance of the system than
any other factor. The duct must be suffi ciently
large to conduct an adequate amount of air to
each register. See Figure 5 (page 7).
• Duct work should be attached directly to the
unit fl anges for horizontal applications.
• For highly resistive duct systems it may be
necessary to add an additional return air
duct and or supply to achieve maximum
performance and prevent coil icing and
refrigerant fl ood back.
•
The heat pump system will not cool or
heat the home if air is lost to the outside
through leaks in the duct system. Ducts
that are collapsed or restricted by foreign
objects will also prevent adequate air fl ow.
• All duct work passing through unconditioned
space must be properly insulated to minimize
duct losses and prevent condensation.
Use insulation with an outer vapor barrier.
Refer to local codes for insulation material
requirements.
Installing Return & Supply Air Collars
If the supply and return collars are supplied
with the unit, they will be located in the supply
duct. They can be easily positioned over the unit
openings (Figure 3, page 6) and secured with
sheet metal screws.
• The diameter of the return duct collar is 14”.
NOTE:
2 ton units are designed with 12” returns.
• The diameter of the supply duct collar is 12”.
• Before permanently installing the collars,
it is recommended you pre-fi t them over
the openings fi rst to determine best fi t and
alignment.
Supply Duct
1. Assemble the collar by overlapping the two ends.
NOTE:
One end of the collar is slotted and
the opposite end has two small holes. Position
the end with small screw holes underneath
the slotted end.
Summary of Contents for Q5RD Series
Page 23: ...23...
