Bryant 986TC - ELECTRICAL CONNECTIONS; Furnace Control Board and Wiring Diagrams

986TC: Installation, Start-up, Operating, Service and Maintenance Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
28
A11157
Fig. 38 – Field-supplied Isolation Relay for Humidifiers with Internal Power Supply
A11617
Fig. 39 – Example of Variable Speed Furnace Control
24 V
Coil
To Humidifier Leads
To Com/24V Screw Terminal
on Thermostat Strip
To HUM Terminal On
Furnace Control Board
To Humidifier Leads
24-V THERMOSTAT
TERMINALS
PL2 – HOT SURFACE
IGNITER & INDUCER
MOTOR CONNECTOR
115-VAC (L2) NEUTRAL
CONNECTIONS
11 5 -VA C ( L1) L INE
VOLTAGE CONNECTIONS
EAC-1 TERMINAL
(
11 5-VA C 1.0 AMP MAX.
)
PL1 – LOW VOLTAGE MAIN
HARNESS CONNECTOR
TRANSFORMER 24-VA C
CONNECTIONS
3-AMP FUSE
STATUS AND COMM
LED LIGHTS
SW1 SETUP
SWITCHES AND
BLOWER OFF-
DELAY
MODEL PLUG
CONNECTOR
AIR CONDITIONING
(A/C) AIRFLOW
SETUP SWITCHES
COMMUNICATION
CONNECTOR
CONTINUOUS FAN
(CF) AIRFLOW
SETUP SWITCHES
OUTDOOR
A
IR TEMP
CONNECTOR
HUMIDIFIER
TERMINAL (24
-
VAC
0.5 AMP MAX.
FLASH
UPGRADE
CONNECTOR
(FACTORY
ONLY)
SW4 SETUP
SWITCHES
SOFTWARE
VERSION
PA RT NUMBER AND
DATE CODE WWYY
ACRDJ – AIR
C
ONDITIONING
RELAY DISABLE
JUMPER
PL3 – ECM BLOWER
HARNESS
CONNECTOR