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Electrical
ELECTROSTATIC DISCHARGE (ESD)
Precautions and Procedures
CAUTION
Electrostatic discharge can affect electronic components.
Take precautions during furnace installation and service
to protect the furnace's electronic controls. Precautions
will help to avoid control exposure to electrostatic
discharge by putting the furnace, the control and the
technician at the same electrostatic potential. Neutralize
electrostatic charge by touching hand and all tools on an
unpainted unit surface, such as the gas valve or blower
deck, before performing any service procedure.
INTERIOR MAKE-UP BOX
(FACTORY INSTALLED LEFT SIDE)
Figure 30
Page 22 of 52
GAS PIPE CAPACITY - FT³/HR (kL/HR)
Table 9
The unit is equipped with a field make-up box on the left
hand side of the cabinet. The make-up box may be moved
to the right side of the furnace to facilitate installation. If the
make-up box is moved to the right side, clip the wire ties
that bundle the wires together and install on the outside of
the cabinet . See Figure 31. The excess wire must be pulled
into the blower compartment. Secure the excess wire to the
existing harness to protect it from damage.
Refer to Figure 32 for unit field wiring. Tables 13 through 19
shows DIP switch and on-board link settings for non-
communicating thermostat applications. Typical wiring
schematic is shown in Figure 33.
1. The power supply wiring must meet Class I restrictions.
Issue 1034
EXTERIOR MAKE-UP BOX
(FIELD INSTALLED RIGHT SIDE)
Figure 31
Protected by either a fuse or circuit breaker, select circuit
protection and wire size according to unit nameplate.
506552-01
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