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Installation
figure #1 – showing Collar mounted on blower housing,
element location and collar plate(s)
sTeP 4: Identify retainer pins on the end of the
heater element(s). These pins are to be inserted in
holes visible in the back of the heater collar. This
stabilizes the heater element and prevents
vibration of the heater elements.
sTeP 5: Slide the heater element(s) into the
mounting opening(s) on the heater collar, making
sure that the retainer pins engage the holes in the
back of the collar.
It may be necessary to lower the blower in order
to complete this task.
When installing the heater elements into the heater
collar, ensure that the thermal overloads are on the
right side; this will be the "L1" side. Secure each
insert(s) with four of the supplied sheet metal
screws provided (See Figure 2).
It may be necessary to remove the line voltage
wires that are connected to the element(s) from
heater electrical box in order to complete
installation.
Remove the wires from heater contactor and
terminal block at "L1" only. If wires are removed
during installation, ensure that they are marked for
proper reconnection. When reconnecting the line
Revised 05-13
Subject to change without prior notice
voltage wires to the contactor, apply 22 in-lbs of
torque.
sTeP 6: Install the element cover over the heater
insert(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.
sTeP 7: REINSTALLING THE ELECTRICAL BOX AND
INSTALLING THE NEW HEATER ELECTRICAL BOX
a. Reinstall the original air handler electrical box
in the same location in which it was removed
from in Step 2-(g).
b. Reuse the mounting screws that were set aside
in Step 2-(g).
c. Using the pre-punched holes in the two front
corner posts underneath the air handler
electrical box, fasten the new heater electrical
box provided in the electrical heater kit using
the four mounting screws found in the clear
accessory bag. Ensure no wires are pinched
between any metal parts.
sTeP 8: CONNECTING HIGH VOLTAGE WIRES
6 720 220 328
HK series
11
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