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4
HK series
for proper reconnection. When reconnecting the
line voltage wires to the contactor, apply 22 in-lbs
of torque.
sTeP 5: Install the element cover over the heater
element(s). These are secured with a tab at one
end of the cover and two of the supplied sheet
metal screws at the other end (See Figure 2).
Ensure that heater wires are routed through the
plastic bushing on the heater element cover.
figure #2 – With Collar removed insert heater element(s) (one
shown in this diagram), wires not shown in diagram.
Ensure unused slot is covered with a collar plate.
sTeP 6: INSTALLING THE HEATER CONTROL BOX:
a. Vertical Units - Install the heater control box
between the unit corner posts at the top of the
blower section.
b. Horizontal Units (Straight through
confi guration) - Mount the heater electrical box
in the rear of the unit, attached to the electrical
post on the opposite side of the blower.
c. Horizontal Units (End Blow Confi guration)
- Mount the heater electrical box in the rear of
the unit, attached to the electrical post on the
opposite side of the blower motor.
6 720 220 328
The mounting holes for the heater box have been
pre-punched in the posts. Make sure no wires are
pinched between the metal parts. Connect or
reconnect wires from the heater element(s) as was
marked in step 4 or follow electrical wiring diagram
for corresponding model at the end of this manual.
STEP 7: Route the loose ends of the yellow, blue,
red, purple, and the two black wire leads from the
long side of the wire harness plug from the heater
electrical box to the heat pump electrical box in the
compressor compartment. Route these wires
through the access hole in the divider panel
together where the existing blower motor wires are
routed.
sTeP 8: CONNECTING HIGH VOLTAGE WIRES
a. In the heat pump electrical box, disconnect the
two line voltage wires that connect the
transformer and blower motor to the "LINE 1"
side of the compressor contactor.
b. Cut the wire terminal off of the following wires
and strip off the insulation:
• One of the black wires from the wire harness
• The transformer wire disconnected in Step
8(a)
• The black blower motor wire disconnected in
Step 8(a)
c. Connect the three wires that were cut and
stripped in Step 8(b) together using a yellow
wire nut connector supplied with the kit.
Secure with electrical tape.
d. Disconnect the two line voltage wires that
connect the transformer and blower motor to
the "LINE2" side of the compressor contactor.
e. Cut the terminal connections off of the
following wires and strip off the insulation:
• The remaining black wire from the wire
harness
• The transformer wire disconnected in Step
8(d)
• The white blower motor wire disconnected in
Step 8(a)
Subject to change without prior notice
Installation
Revised 05-13
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