Accessories - Bryant 880TA Installation, Start-Up, Operating And Service And Maintenance Instructions

5. Pull furnace power wires out of 1/2- -in. (12 mm) diameter
hole in J- -Box. Do not loosen wires from strain- -relief
wire- -tie on outside of J- -Box.
6. Route furnace power wires through holes in casing and
electrical box and into electrical box.
7. Pull field power wires into electrical box.
8. Remove cover from furnace J- -Box.
9. Route field ground wire through holes in electrical box
and casing, and into furnace J- -Box.
10. Reattach furnace J- -Box to furnace casing with screws re-
moved in Step 4.
11. Secure field ground wire to J- -Box green ground screw.
12. Complete electrical box wiring and installation. Connect
line voltage leads as shown in Fig. 24. Use best practices
(NEC in U.S. for wire bushings, strain relief, etc.
13. Reinstall cover to J- -Box. Do not pinch wires between
cover and bracket.
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 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- -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 - - 30.) Connect terminal Y/Y2 as shown in Fig. 27- -30 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
115VAC, 1.0 amps maximum and are energized during
blower motor operation. (See Fig. 26.)
2. 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.)
A10141
NOTE: DO NOT connect furnace control HUM terminal to
HUM (humidifier) terminal on Thermidistat, Zone Controller or
similar device. See ThermidistatE, Zone Controller, thermostat,
or controller manufacturer's instructions for proper connection.
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