Carrier 160 Series - Page 22

58CV
AI0144
Fig. 24 - Field-Supplied Electrical Box on Furnace Casing
Power Cord Installation in Furnace J-Box
NOTE: Power cords must be able to handle the electrical
requirements listed in Table 6. Refer to power cord
manufacturer’s listings.
1. Remove cover from J-Box.
2. Route listed power cord through 7/8-in. (22 mm) diameter
hole in J-Box.
3. Secure power cord to J-Box bracket with a strain relief
bushing or a connector approved for the type of cord used.
4. Secure field ground wire to green ground screw on J-Box
bracket.
5, Connect line voltage leads as shown in Fig. 25.
6. Reinstall cover to J-Box. Do not pinch wires between
cover and bracket.
BX Cable Installation in Furnace J-Box
1. Remove cover from J-Box.
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bo . Route BX cable into 7/8-in. (22 mm) diameter hole in
J-Box.
3. Secure BX cable to J-Box bracket with connectors ap-
proved for the type of cable used.
4. Secure field ground wire to green ground screw on J-Box
bracket.
5, Connect line voltage leads as shown in Fig. 25.
6. Reinstall cover to J-Box. Do not pinch wires between
cover and bracket.
24-V Wiring
Make field 24-v connections at the 24-v terminal strip. (See Fig.
25 - 34.) Connect terminal Y/Y2 as shown in Fig. 27-34 for
proper cooling operation. Use only AWG No. 18, color-coded,
copper thermostat wire.
The 24-v circuit contains an automotive-type, 3-amp. fuse
located on the control. Any direct shorts during installation,
service, or maintenance could cause this fuse to blow. If fuse
replacement is required, use ONLY a 3-amp. fuse of identical
size.
ACCESSORIES
1. Electronic Air Cleaner (EAC)
Connect an accessory Electronic Air Cleaner (if used) us-
ing 1/4-in female quick connect terminals to the two male
1/4-in quick-connect terminals on the control board
marked EAC-1 and EAC-2. The terminals are rated for
11SVAC, 1.0 amps maximum and are energized during
blower motor operation. (See Fig. 26.)
. Humidifier (HUM)
Connect an accessory 24 VAC, 0.5 amp. maximum hu-
midifier (if used) to the 1/4-in male quick-connect HUM
terminal and COM-24V screw terminal on the control
board thermostat strip. The HUM terminal is energized
when blower is energized in heating. (See Fig. 26.)
NOTE: DO NOT connect furnace control HUM terminal to
HUM (humidifier) terminal on Thermidistat, Zone Controller or
similar device. See Thermidistat©, Zone Controller, thermostat,
or controller manufacturer’s instructions for proper connection.
VENTING
The furnace shall be connected to a listed factory built chimney
or vent, or a clay-tile lined masonry or concrete chimney. Venting
into an unlined masonry chimney or concrete chimney is
prohibited.
When an existing Category I furnace is removed or replaced, the
original venting system, may no longer be sized to properly vent
the attached appliances. An improperly sized Category I venting
system could cause the formation of condensate in the furnace
and vent, leakage of condensate and combustion products, and
spillage of combustion products into the living space.
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