10
STEP 2: Center basepan on pad, ensuring it is level.
STEP 3: Remove unit top panel by removing screws around the perimeter of top panel.
Disconnect fan motor leads from contactor and lay top panel aside taking care
not to damage the fan.
STEP 4: Drill 4 or 6 holes (1/4” [6.35 mm] diameter) in the unit basepan only
per figure 3.
STEP 5: Select and obtain appropriate concrete or lag screws and flat washers per figure 3.
STEP 6: Drill pilot holes in pad through the basepan clearance holes drilled in Step 4,
ensuring that the holes are at least
1
⁄4” [6.35 mm] deeper than the concrete fas-
tener being used. Use the concrete screw or lag screw manufacturer’s recom-
mended hole diameter for the pilot holes.
STEP 7: Drive concrete screws or lag screws through
1
⁄4” [6.35 mm] clearance holes in
unit base-pan and into the pad. Use flat washers under the head of the screws.
Snug screws to basepan.
NOTE: Do not over-tighten the concrete or lag screws. Doing so can weaken or strip
the fastener and cause it to break or pull out.
STEP 8: Re-connect fan motor wire leads to contactor per the unit wiring diagram and
lower unit top onto the unit. Take care to place the fan motor wire conduit in the
slot in the top of the control box as the top is lowered onto the unit. Re-install
screws that attach unit top to the unit.
STEP 9: Finish unit installation per Sections 4 - 14 in this manual.
4.0 REFRIGERANT CONNECTIONS
All units are factory charged with Refrigerant 410A for 15 ft. [4.6 m] of line set. All
models are supplied with service valves. Keep tube ends sealed until connection is
to be made to prevent system contamination.
5.0 REPLACEMENT UNITS
To prevent failure of a new heat pump unit, the existing tubing system must be cor-
rectly sized and cleaned or replaced. Care must be exercised that the expansion
device is not plugged. For new and replacement units, a liquid line filter drier should
be installed and refrigerant tubing should be properly sized. Test the oil for acid. If
positive, a liquid line filter drier is mandatory.
6.0 INDOOR COIL
REFER TO INDOOR COIL MANUFACTURER’S INSTALLATION INSTRUCTIONS.
IMPORTANT: The manufacturer is not responsible for the performance and opera-
tion of a mismatched system, or for a match listed with another manufacturer’s coil.
6.1 LOCATION
Do not install the indoor coil in the return duct system of a gas or oil furnace.
Provide a service inlet to the coil for inspection and cleaning. Keep the coil pitched
toward the drain connection.
CAUTION
When coil is installed over a finished ceiling and/or living area, it is
recommended that a secondary sheet metal condensate pan be
constructed and installed under entire unit. Failure to do so can result
in property damage.
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