Accessories. Bryant 345MAV, Series F

FIVE WIRE

THREE-WIRE

HEATING-ONLY

BLOWER DOOR SWITCH

NOTE 2

W C R

FIELD 24-V WIRING

FIELD 115-, 208/230-, 460-V WIRING

FACTORY 24-V WIRING

FACTORY 115-V WIRING

G Y

THERMOSTAT

TERMINALS FIELD-SUPPLIED

DISCONNECT

208/230- OR

460-V

THREE

PHASE

BLK

WHT

BLK

WHT

GND

115-V FIELD-

SUPPLIED

DISCONNECT

GND

AUXILIARY

J-BOX

W

T

R

O

L

C

O

N

R

G

COM

Y

24-V

TERMINAL

BLOCK

FURNACE

208/230-V

SINGLE

PHASE

GND

NOTE 1

TWO

WIRE

CONDENSING

UNIT

NOTES: 1.

2.

3.

Connect Y-terminal in furnace as shown for proper blower operation.

Some thermostats require a "C" terminal connection as shown.

If any of the original wire, as supplied, must be replaced, use same type or equivalent wire.

ALTERNATE

FIELD

LOCATION

Fig. 30—Typical Heating and Cooling Application Wiring Diagram

FACTORY

INSTALLED

LOCATION

A00212

Fig. 31—Relocating J-Box

C.

Accessories

1. Electronic Air Cleaner (EAC)

Two quick-connect terminals marked EAC-1 and EAC-2 are provided for EAC connection. (See Fig. 33.) These terminals are energized with 115v (1.0-amp maximum) during blower motor operation.

A02174

2. Humidifier (HUM)

A quick-connect terminal (HUM) and screw terminal (C

OM

24v) are provided for 24-v humidifier connection. (See Fig.

26.) HUM terminal is energized with 24v (0.5-amp maximum) After the inducer pre-purge period. (HK42FZoB

Control Board)

NOTE: A field-supplied, 115-v controlled relay connected to

EAC terminals may be added if humidifier operation is desired during blower operation.

VI.

VENTING

The 345MAV Furnaces require a dedicated, (one 345MAV furnace only) sealed vent system. All air for combustion is taken from the area adjacent to furnace, and all flue gases are discharged to outdoor atmosphere.

A.

Removal of Existing Furnaces from

Common Venting 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, spillage of combustion products into the living space, etc.

—22—