24-V Wiring; Accessories - Bryant 352MAV Installation, Start-Up, And Operating Instructions Manual

BLK BLK
WHT WHT
GND
115-V FUSED
DISCONNECT
SWITCH
(WHEN REQUIRED)
Fig. 27—Heating and Cooling Application Wiring Diagram 1-Stage Thermostat and Condensing Unit
BLK
BLK
WHT WHT
GND
115-V FUSED
DISCONNECT
SWITCH
(WHEN REQUIRED)
Fig. 28—Heating and Cooling Application Wiring Diagram 2-Stage Thermostat and Condensing Unit
B. 24-V Wiring
Make field 24-v connections at 24-v terminal block. (See Fig. 32.)
Connect terminal Y/Y2 as shown in Fig. 27 and 28 for proper
cooling operation. Use only AWG No. 18, color-coded, copper
thermostat wire for lengths up to 100 ft. For wire lengths over 100
ft, use AWG No. 16 wire.
The 24-v circuit contains an automotive-type, 3-amp fuse located
on control (See Fig. 32.) Any direct shorts of 24-v wiring 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/type. The control will flash code 24 when fuse needs
replacement.
1-STAGE THERMOSTAT TERMINALS
W
FIVE
WIRE
TWO-WIRE
HEATING-
ONLY
W2
COM
W/W1
GND
Y/Y2
JUNCTION
BOX
R
CONTROL
G
BOX
24-V
TERMINAL
BLOCK
NOTES: 1. Connect Y-terminal as shown for proper operation.
FURNACE
2-STAGE THERMOSTAT TERMINALS
SEVEN
W2 W1
WIRE
THREE-WIRE
HEATING-
ONLY
W2
COM
W/W1
GND
Y/Y2
JUNCTION
BOX
R
CONTROL
G
BOX
24-V
TERMINAL
BLOCK
NOTES: 1. Connect Y-terminal as shown for proper operation.
FURNACE
FIELD 24-V WIRING
FIELD 115-, 208/230-, 460-V WIRING
FACTORY 24-V WIRING
FACTORY 115-V WIRING
Y R G C
GND
GND
CONDENSING
UNIT
2. Some thermostats require a "C" terminal connection as shown.
3. If any of the original wire, as supplied, must be replaced,
use same type or equivalent wire.
FIELD 24-V WIRING
FIELD 115-, 208/230-, 460-V WIRING
FACTORY 24-V WIRING
FACTORY 115-V WIRING
Y2 R G Y1 C
GND
C
Y1
Y2
2-SPEED
CONDENSING
UNIT
2. Some thermostats require a "C" terminal connection as shown.
3. If any of the original wire, as supplied, must be replaced,
use same type or equivalent wire.
C. Accessories
1. Electronic Air Cleaner (EAC)
Two male quick-connect terminals marked EAC-1 and
EAC-2 are provided for EAC connection. (See Fig. 32.)
These terminals are energized with 115-v (1.0-amp maxi-
mum) during blower motor operation.
→
2. Humidifier (HUM)
Connect an accessory 24 VAC, 0.5 amp maximum humidi-
fier (if used) to the 1/4-in. male quick-connect HUM
terminal and C
thermostat strip. The HUM terminal is energized when gas
valve is energized. See Fig. 31 or 32.
—20—
FIELD-SUPPLIED
FUSED DISCONNECT
208/230- OR
460-V
THREE
PHASE
GND
208/230-V
SINGLE
PHASE
GND
FIELD-SUPPLIED
FUSED DISCONNECT
208/230- OR
460-V
THREE
PHASE
GND
208/230-V
SINGLE
PHASE
GND
GND
-24V screw terminal on the control board
OM
A99071
A99072