035-15713-003 REV. A (0500)
4
Unitary Products Group
INSTALLATION
OUTDOOR UNIT
After the site has been selected, a solid base pad that will not
shift or settle should be provided. The base pad should not
come in contact with the foundation or side of the structure
because sound may be transmitted to the residence. The top
of the pad should be at least two inches above grade to give
sufficient height for defrost ice build up during freezing winter
temperatures. See Figure 2. The pad should be located far
enough away from the structure so the outdoor unit is not
closer than its minimum distances. See Figure 1. set the out-
door unit upon the pad with care to avoid damage.
DISCHARGE LINE FILTER-DRIER
The 10, 12, and 14 SEER heat pumps have a solid core filter-
drier located in the discharge line. Due to its location in the
refrigerant circuit it uses a unique oversized capacity drier
with a high temperature binder.
NOTE:
Replacement of the discharge line drier must be the
exact same as marked on the original factory drier.
See Source 1 for O.E.M. replacement drier.
OUTDOOR THERMOSTATS
An outdoor thermostat may be used with this heat pump sys-
tem.
(All installations of this heat pump in Manufac-
tured Homes built per HUD standards SHALL have
an outdoor thermostat installed at the time of
installation by the installer. In accordance with
HUD std. 3280.714 (a) (1) (ii). Outdoor thermostat,
Part number 3024-6881/D shall be used and should
be ordered at your nearest UPG Parts Source)
.
See
last page of these instructions. Select the proper location for
mounting the outdoor thermostat (see instructions packed
with outdoor thermostat).
INDOOR UNITS
Install the indoor coil in the furnace or air handler according
to the installation instructions packed with each component.
REFRIGERANT LINE (SWEAT FIT)
The following steps are very important when setting up a
refrigeration system and need to be followed completely to
insure that a strong, flexible and leak tight system is obtained.
The installation of the copper refrigerant tubing must be done
with care to obtain reliable, trouble-free operation.
1.
Selection of proper refrigerant tubing grade and size.
2.
Refrigerant line routing, cutting and fitting.
3.
Insulating the vapor line.
4.
Connecting the refrigerant lines to the indoor coil and
outdoor unit.
5.
Proper preparation of joint connections.
6.
Reassembling, cleaning and brazing the joint connec-
tions.
7.
Pressure leak test all joints.
8.
Evacuate refrigerant lines and indoor coil.
9.
Charging refrigeration system (See Tabular Data Sheet if
the line length is other than 15 feet).
Use only ACR grade copper tubing and keep ends sealed
until joints are made.
The correct diameters of the refrigerant lines are listed in the
Tabular Data Sheet.
For best performance, select routing of refrigerant lines for
minimum distance and fewest number of bends.
Determine the path that the refrigerant lines will follow.
Starting at either the indoor coil or the outdoor unit refrigerant
line connections, carefully measure, cut, de-burr and fit cop-
per refrigerant lines along the path previously determined.
NOTE:
If it is necessary for bends to be formed in the vapor
line, the radius should not be less than 12 inches.
Cut ends of the copper tubing square.
Remove all burrs from tubing with a reamer, file or de-burring
tool.
Whether the indoor coil is above or below the outdoor unit,
the vapor line should not be sloped for heat pump installa-
tions.
FIGURE 2 :
SNOW AND ICE CONSIDERATIONS
Do not remove the protective caps or plugs from the
unit refrigerant connections until the refrigerant lines
are run and ready for final connection. If this proce-
dure is not observed, dirt and other particles will get
into the system and plug various orifices and small
tubes.
Failure to do so or using a substitute drier or a gran-
ular type may result in damage to the equipment.
