Bryant Deluxe 4 WAy Gas Furnase 355MAV User Manual

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NOTE: The gas valve inlet press tap connection is suitable to use as test gage connection providing test pressure DOES NOT exceed maximum

0.5 psig (14-in. wc) stated on gas valve. (See Fig. 56.) Piping should be pressure tested in accordance with NFGC local and national plumbing

and gas codes before furnace is attached. In Canada, refer to current edition of NSCNGPIC. If pressure exceeds 0.5 psig (14-in. wc), gas supply

pipe must be disconnected from furnace and capped before pressure test. If test pressure is equal to or less than 0.5 psig (14-in. wc), turn off electric

shutoff switch located on gas valve before test. It is recommended that ground joint union be loosened before pressure testing. After all connections

have been made, purge lines and check for leakage.

PROCEDURE 8—ELECTRICAL CONNECTIONS
See Fig. 27 for field wiring diagram showing typical field 115-v and 24-v wiring. Check all factory and field electrical connections for tightness.

WARNING: Blower access panel door switch opens 115-v power to control center. No component operation can

occur. Do not bypass or close switch with panel removed. Failure to follow this warning could result in personal injury or

death.

CAUTION: Furnace control must be grounded for proper operation or control will lock out. Control is grounded

through green wire routed to gas valve and burner box screw.

A. 115-V Wiring
Before proceeding with electrical connections, make certain that voltage, frequency, and phase correspond to that specified on the furnace rating

plate. Also, check to be sure that service provided by utility is sufficient to handle load imposed by this equipment. Refer to rating plate or Table

4 for equipment electrical specifications.
Make all electrical connections in accordance with National Electrical Code (NEC) ANSI/NFPA 70-2002 and any local codes or ordinances that

might apply. For Canadian installations, all electrical connections must be made in accordance with Canadian Electrical Code CSA C22.1 or

authorities having jurisdiction.
Use a separate, fused branch electrical circuit containing a properly sized fuse or circuit breaker for this furnace. See Table 4 for wire size and

fuse specifications. A disconnecting means must be located within sight from and readily accessible to furnace.
NOTE: Proper polarity must be maintained for 115-v wiring. If polarity is incorrect, control LED status indicator light will flash rapidly and

furnace will NOT operate.

Fig. 27—Heating and Cooling Application Wiring Diagram

A98325

115-V

FIELD-SUPPLIED

DISCONNECT

SWITCH

115-V

SINGLE

PHASE

AUXILIARY

J-BOX

FURNACE

CONTROL

CENTER

TWO WIRE

24-V

TERMINAL

BLOCK

THREE-WIRE

HEATING

ONLY

FIVE

WIRE

NOTE 5

NOTE 1

NOTE

THERMOSTAT

TERMINALS

FIELD-SUPPLIED

DISCONNECT

CONDENSING

UNIT

GND

FIELD 24-V WIRING

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

FACTORY 24-V WIRING

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

208/230- OR

460-V

THREE PHASE

208/230-V

SINGLE

PHASE

W/W1

Y/Y2

NOTES:

Connect Y or Y/Y2 terminal as shown for proper cooling operation.

Proper polarity must be maintained for 115-v wiring.

Use W2 with 2-stage thermostat when zoning.

If any of the original wire, as supplied, must be replaced, use

same type or equivalent wire.

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

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