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Bryant 313AAV User Manual

Page 23

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23

A03221

Fig. 23 -- 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 7. 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.
2. Route BX cable into 7/8--inch diameter hole in J--Box.
3. Secure BX cable to J--Box bracket with connectors

approved 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.

23.) Connect terminal Y/Y2 as shown in Fig. 24 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)

using 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
115 VAC, 1.0 amps maximum and are energized during
blower motor operation. (See Fig. 24.)

2. Humidifier (HUM)

Connect an accessory 24 VAC, 0.5 amp. maximum

humidifier (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 gas valve relay (GVR) is energized. (See
Fig. 24.)

NOTE: A field--supplied, 115--v controlled relay connected to
EAC terminals may be added if humidifier operation is desired
during blower operation.
NOTE: DO NOT connect furnace control HUM terminal to
HUM (humidifier) terminal on Thermidistatt, 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.

313A