Accessories; Direct Venting; Removal Of Existing Furnaces From Common Vent Systems - Bryant 352mav Installation, Start-Up, And Operating Instructions Manual

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
ELECTRIC
DISCONNECT
SWITCH
Fig. 29—Disconnect Switch and Furnace
ALTERNATE
FIELD
LOCATION
Fig. 30—Relocating J-Box
C. Accessories
1. Electronic Air Cleaner (EAC)
Two male quick-connect terminals marked EAC-1 and
2-STAGE THERMOSTAT TERMINALS
SEVEN
W2
WIRE
THREE-WIRE
HEATING-
ONLY
W2
COM
W/W1
GND
Y/Y2
JUNCTION
BOX
R
CONTROL
G
BOX
24-V
TERMINAL
BLOCK
FURNACE
COPPER
WIRE ONLY
ALUMINUM
WIRE
A93033
FACTORY
INSTALLED
LOCATION
A00212
W1 Y2 R G Y1 C
GND
2-SPEED
CONDENSING
UNIT
NOTES: 1. Connect Y-terminal as shown for proper operation.
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.
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.)
NOTE: A field-supplied, 115–v controlled relay connected to
EAC terminals may be added if humidifier operation is desired
during blower operation.
CAUTION: UNIT DAMAGE HAZARD
Failure to follow this caution may result in unit compo-
nent damage.
DO NOT connect furnace control HUM terminal to HUM
(humidifier) terminal on Thermidistat™, Zone Controller
or similar device. See Thermidistat™, Zone Controller,
thermostat, or controller manufacturer's instructions for
proper connection.
IX. DIRECT VENTING
The 352MAV furnaces require a dedicated (one 352MAV furnace
only) direct-vent system. In a direct-vent system, all air for
combustion is taken directly from outside atmosphere, and all flue
gases are discharged to outside atmosphere. The venting system
shall be installed in accordance to these instructions.
A. Removal of Existing Furnaces from
Common Vent Systems
When an existing Category I furnace is removed or replaced, the
original venting system may no longer be sized to properly vent
the remaining 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, etc.
—22—
FIELD 24-V WIRING
FIELD 115-, 208/230-, 460-V WIRING
FACTORY 24-V WIRING
FACTORY 115-V WIRING
FIELD-SUPPLIED
FUSED DISCONNECT
208/230- OR
460-V
THREE
PHASE
GND
208/230-V
SINGLE
C
PHASE
Y1
GND
Y2
GND
-24V screw terminal on the control board
OM
A99072