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WARNING
It is illegal to discharge refrigerant into
the atmosphere. Use proper reclaiming
methods & equipment when installing
or servicing this unit.
The units are delivered pre-charged with
refrigerant for the condenser coil and the
evaporator. Charging of the field installed pip-
ing is required. Refer to the refrigerant charge
table for the proper amount to be added for
the applications interconnect piping. Unit
service valves are solid brass, for sweat con-
nections.
Comfort where it counts
S1CG/S1HG
• Installation, Operation and Maintenance Manual •
Refrigerant Processing
14
S2CG/S2HG
Single-Zone,
(continued)
CAUTION
all field installed piping
Pressure test
with nitrogen. Using a suitable vacuum
pump, evacuate the tubing and indoor
unit to 500 microns or less, with service
valves remaining front seated (closed).
Before releasing the refrigerant from the
condenser, be sure the manifold gauge
set is closed so as not to lose vacuum
when shutting down the pump.
Release refrigerant from the condensing
unit by back seating the service valve. Al-
len wrenches are used to open the valve.
Replace valve caps. DO NOT back seat
the valves past the snap flanges that hold
the valve core in place.
NOTICE
The following air handlers are equivalent
in electrical specifications and system
combinations.
WLH09
WLH12
WLH24
WLC30
WLC36
P/N 240007754, Rev. A [051509]
Dual-Zone
=
UNH09
=
UNH12
=
UNH24
=
UNC36
=
UNC36
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