8
Installation of Indoor Unit on Wall Mounting Plate
1.
A length of field-provided flexible condensate piping
should be connected to the drain prior to securing the
unit to the wall mounting plate.
2. If the factoryprovided refrigerant piping connections
and field-provided flexible condensate piping are long
enough to enable final field connections after unit is
installed on wall mounting plate, use field-provided
tape to bundle them together.
3. The utility bundle may be routed out of the back of
the unit or out either side. If the bundle is to be routed
out the back through an external wall, feed the utility
bundle through the wall sleeve. If the utility bundle is
to be routed out of the side of the indoor unit and up
an inside wall, carefully form the utility bundle so that
it makes a gentle 90° turn.
4. Align the back of the indoor unit with the hooks at the
top of the wall mounting plate. Move the unit from side
to side to make sure that it settles securely.
5. The bottom of the unit can be lifted to facilitate
refrigerant piping and condensate drain connections,
if necessary.
TEMPORARY
SPACER
(To facilitate
connections)
HOOKS AT TOP
OF MOUNTING
BRACKET
Figure 14. Secure Unit to Wall Mounting Plate
Indoor Unit Condensate Piping Connections
IMPORTANT
Make sure that drain piping is properly routed and
insulated to prevent both leaks and condensation.
1.
Use a field-provided hose clamp to secure the drain
line stub on the side of the cabinet to a field-supplied
1inch (25 mm) drain line.
NOTE:
Take care not to over-tighten the hose clamps this
may damage the drain line stub.
NOTE:
Connection between stub and drain line must be
watertight. Apply non-hardening plumbing joint
compound if needed to ensure a watertight seal.
2.
Confirm proper slope (not less than 1/4 inch per foot
(18 mm per meter) and routing of condensate lines to
ensure moisture is drained away from the indoor unit.
3. Drain should be as short as possible and should
not have any droops or kinks that would restrict
condensate flow and shall be approved resistant pipe.
There must be a 2inch (51 mm) space between the
end of the condensate drain and the final termination
point (ground, open drain, etc.) to ensure that the line
will drain freely.
4. After the system installation is complete, the
condensate drain line must be checked for leaks
and proper drainage. If a field-provided condensate
pump has been installed, it must be checked to
ensure proper operation. This check is part of the
startup process which must be done by the installing
contractor.
IMPORTANT
Drain should have a slope of at least ¼ inch per foot and
should be approved corrosion-resistant pipe. You must
confirm operation of every drain and pump in the system
as part of the commissioning procedure.
CORRECT
Make sure there are no
kinks or dent in drain
hose to ensure proper
drainage.
Figure 15. Condensate Line
Outdoor Unit Installation
Installing Drain Connector and Seal
Condensate formed during the heating and defrost
processes must be drained from heat pump units. Drain
holes are provided in the base of the units to ensure proper
drainage. Heat pumps must be raised when installed on a
concrete pad or the ground to allow drainage to occur. If
the heat pump unit is installed on wall mounting bracket,
insert the provided drain connector into one of the 1
inch (25 mm) drain holes and attached a field-provided
insulated drain hose to the connector. Use field-provided
rubber plugs to cover any unused drain holes (see “Figure
16. Installing Drain Connector and Seal”.
1. Fit the rubber seal on the end of the drain joint that will
connect to the outdoor unit.
2. Insert the drain joint into the hole in the base pan of
the unit.
3. Rotate the drain joint 90° until it clicks in place facing
the front of the unit.
4. Connect a drain hose extension (not included) to
the drain joint to redirect water from the unit during
heating mode
Seal
Drain Connector
Base pan hole of
outdoor unit
Seal
Figure 16. Installing Drain Connector and Seal
