Bryant 355MAV - Manual (Page 10)

CAUTION: UNIT DAMAGE HAZARD
Failure of plastic components may occur.
Do not use ethylene glycol (Prestone II antifreeze/coolant
or equivalent automotive type).
6. Replace drain connection cap and clamp to inducer housing.
7. Replace main furnace door.
8. Propylene glycol need not be removed before restarting
furnace.
WIRING DIAGRAM
See Fig. 12, 13, and 18 for Wiring Diagram
TROUBLESHOOTING
Use the troubleshooting guide, the status code LED on the furnace
control and the component test to isolate furnace operation
problems.
A more detailed troubleshooting guide is available from your
distributor.
For an explanation of status codes, refer to service label located on
back of main furnace door. (See Fig. 17.)
Fig. 13—Variable Capacity Furnace Control
A02278
FLASH
UPGRADE
CONNECTOR
(FACTORY
ONLY)
ACRDJ – AIR
CONDITIONING
RELAY DISABLE
JUMPER
HUMIDIFIER
TERMINAL (24-VAC
0.5 AMP MAX.
CONTINUOUS FAN
(CF) AIRFLOW
SETUP SWITCHES
COMMUNICATION
CONNECTOR
AIR CONDITIONING
(A/C) AIRFLOW
SETUP SWITCHES
MODEL PLUG
CONNECTOR
SW1 SETUP
SWITCHES AND
BLOWER OFF-
DELAY
STATUS AND COMM
LED LIGHTS
3-AMP FUSE
TRANSFORMER 24-VAC
CONNECTIONS
PL3 – ECM BLOWER
HARNESS
CONNECTOR
PL1 – LOW VOLTAGE MAIN
HARNESS CONNECTOR
EAC-1 TERMINAL
(115-VAC 1.0 AMP MAX.)
115-VAC (L1) LINE
VOLTAGE CONNECTIONS
115-VAC (L2) NEUTRAL
CONNECTIONS
PL2 – HOT SURFACE
IGNITER & INDUCER
MOTOR CONNECTOR
24-V THERMOSTAT
TERMINALS
FUTURE
APPLICATIONS
Fig. 14—Freeze Protection
A93058
32 ° F MINIMUM INSTALLED
AMBIENT OR FREEZE
PROTECTION REQUIRED
—10—