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7. Make sure outdoor unit has been put in place according
to the Installation Instructions and is connected to the
refrigerant lines.
SEALING THE UNIT
Seal the unit so that warm air is not allowed into the cabinet.
Warm air introduces moisture, which results in water
blow-off problems. This is especially important when the
unit is installed in an unconditioned area.
If installed in an unconditioned space, sealant should be
applied around the electrical wires, refrigerant tubing, and
condensate lines where they enter the cabinet.
WARNING
There must be an airtight seal between the bottom of the
air handler and the return air plenum. Use fiberglass
sealing strips, caulking, or equivalent sealing method
between the plenum and the air handler cabinet to ensure
a tight seal. Return air must not be drawn from a room
where this air handler or any gas-fueled appliance (i.e.,
water heater), or carbon monoxide-producing device
(i.e., wood fireplace) is installed.
IMPORTANT
When sealing the cabinet, be sure to seal closed any
space around the holes where the drain lines exit the cab
inet using duct tape and/or Permagum. Warm air must not
be allowed to enter through any gaps or holes in the cabi
net.
Make sure the liquid line and suction line entry points are
sealed with either ARMAFLEX material or with Permagum.
Permagum may also be used to seal around the main and
auxiliary drains and around open areas of electrical inlets.
Electrical Connections
WARNING
Electric shock hazard! - Disconnect all
power supplies before servicing.
Replace all parts and panels before op
erating.
Failure to do so can result in death or elec
trical shock.
WARNING
Electric Shock Hazard.
Can cause injury or death.
Foil‐faced insulation has conductive characteristics sim
ilar to metal. Be sure there are no electrical connections
within a ½” of the insulation. If the foil‐faced insulation
comes in contact with electrical voltage, the foil could pro
vide a path for current to pass through to the outer metal
cabinet. While the current produced may not be enough
to trip existing electrical safety devices (e.g. fuses or cir
cuit breakers), the current can be enough to cause an
electric shock hazard that could cause personal injury or
death.
S
All field wiring must be done in accordance with
National Electrical Code, applicable requirements of
UL and local codes, where applicable.
S
Electrical wiring, disconnect means and over-current
protection are to be supplied by the installer. Refer to
the air handler rating plate for maximum over-current
protection, minimum circuit ampacity, as well as
operating voltage.
S
The power supply must be sized and protected
according to the specifications supplied on the product.
S
This air handler is factory-configured for 240 volt, single
phase, 60 cycles. For 208-volt applications, see “208
Volt Conversion” later in this section.
S
For optional field‐installed electric heat applications,
refer to the instructions provided with the accessory for
proper installation.
WARNING
USE COPPER CONDUCTORS ONLY
1. Disconnect all power supplies.
2. Remove the air handler access panel.
3. Route the field supply wires to the air handler electrical
connection box.
4. Use UL-listed wire nuts to connect the field supply
conductors to the unit black and yellow leads, and the
ground wire to ground terminal marked
GND
.
5. Replace the air handler access panel.
