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CLIP
BREAKER(S)
MOUNTING
BRACKET
NOTE - There may be only one clip securing
each circuit breaker.
CIRCUIT
BREAKER
FIGURE 7. Circuit Breaker Clip
2 - Install the circuit breaker cover plate.
FIGURE 8. Circuit Breaker Cover Plate
NOTE
–
If electric heat kit has only one circuit breaker, the
breaker cover plate needs to be moved up and installed
over the opening without the circuit breaker. Fasten the
breaker cover plate to the access panel using the circled
hole in figure 8. If the electric heat kit has two circuit break-
ers, the breaker cover plate is not required.
Electrical Connections
WARNING
Electric shock hazard! - Disconnect all power
supplies before servicing.
Replace all parts and panels before
operating.
Failure to do so can result in death or
electrical shock.
IMPORTANT
USE COPPER CONDUCTORS ONLY
NOTE
–
Refer to the nameplate on the air handler unit
for minimum circuit ampacity and maximum overcurrent
protection size
.
The air handler units are provided with openings to be
used with 1-1/2 inch trade size (1-31/32 inch diameter)
conduit.
If you want a single point power supply, refer to the name-
plate on the single point power supply accessory for min-
imum circuit ampacity and maximum overcurrent protec-
tion size. Select the proper supply circuit conductors in
accordance with tables 310-16 and 310-17 in the National
Electric Code, ANSI/NFPA No. 70 or tables 1 through 4 in
the Canadian Electric Code, Part I, CSA Standard C22.1.
Refer to figure 25 for typical low voltage field wiring for
air handler/condensing unit and heat pump applications.
Figure 24 is a diagram of the air handler connections and
the heater high-voltage wiring.
1 -
Make wiring connections as follows:
Heaters equipped with circuit breakers
– Connect
field power supply wiring to circuit breaker(s). Figure
9 shows
L1
,
L2
and ground
(GND)
connections for
a 2-breaker configuration.
ON
OF
F
60
ON
OF
F
60
L1
L2
CIRCUIT 1
L1
L2
CIRCUIT 2
GND
208/240 VOLT FIELD
SUPPLY WIRES
Field Supply
Ground Wires
FIGURE 9
. Field Power Supply Wiring
2 - Remove the interface harness from the air handler
unit and connect the 6-pin connector on the heater
assembly to the mating connector on the air handler
unit.
3 - For applications using a two-stage room thermostat
and/or an outdoor thermostat, connect wiring as
shown in figure 24.
Circuit Breaker Cover Installation
1 - Remove any installed patch plates still present.
2 - Remove paper backing from the adhesive around
the perimeter of the back side of the circuit breaker
cover (figure 10).
3 - Position the breaker cover over the air handler
circuit breaker opening.
