FIELD 24-VOLT WIRING

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

FACTORY 24-VOLT WIRING

FACTORY 115-VOLT WIRING

 

NOTE 2

1-STAGE

 

 

 

 

FIVE

W C Y

R G THERMOSTAT

FIELD-SUPPLIED

 

TERMINALS

WIRE

 

FUSED DISCONNECT

 

 

THREE-WIRE

HEATING-

ONLY

BLK

BLK

 

W2

 

 

WHT

WHT

 

COM

 

 

 

 

 

W/W1

 

GND

 

Y/Y2

115-VOLT FIELD-

JUNCTION

 

 

SUPPLIED

BOX

R

 

FUSED

CONTROL

 

DISCONNECT

BOX

G

 

 

 

24-VOLT

 

 

TERMINAL

 

 

 

BLOCK

 

 

FURNACE

 

208/230- OR

 

460-VOLT

 

THREE

 

PHASE

 

208/230-

NOTE 1

VOLT

 

SINGLE

 

PHASE

 

GND

 

CONDENSING

 

UNIT

NOTES: 1. Connect Y/Y2-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.

312A

A95236

Fig. 24 - Field Wiring Diagram

Piping should be pressure and leak tested in accordance with NFGC in the United States or CAN/CSA-B149.1-05 in Canada, local, and national plumbing and gas codes before the furnace has been connected. After all connections have been made, purge lines and check for leakage at furnace prior to operating furnace.

If pressure exceeds 0.5 psig (14-in. wc), gas supply pipe must be disconnected from furnace and capped before and during supply pipe pressure test. If test pressure is equal to or less than 0.5 psig (14-in. wc), turn off electric shutoff switch located on furnace gas control valve and accessible manual equipment shutoff valve before and during supply pipe pressure test. After all connections have been made, purge lines and check for leakage at furnace prior to operating furnace.

The gas supply pressure shall be within the maximum and minimum inlet supply pressures marked on the rating plate with the furnace burners ON and OFF.

ELECTRICAL CONNECTIONS

!WARNING

ELECTRICAL SHOCK AND FIRE HAZARD

Failure to follow this warning could result in personal injury, death, or property damage.

The cabinet MUST have an uninterrupted or unbroken ground according to NEC ANSI/NFPA 70-2006 and Canadian Electrical Code CSA C22.1 or local codes to minimize personal injury if an electrical fault should occur. This may consist of electrical wire, conduit approved for electrical ground or a listed, grounded power cord (where permitted by local code) when installed in accordance with existing electrical codes. Refer to the power cord manufacturer’s ratings for proper wire gauge. Do not use gas piping as an electrical ground.

!WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury or death.

Blower access panel door switch opens 115-v power to control. No component operation can occur. Do not bypass or close switch with panel removed.

See Fig. 24 for field wiring diagram showing typical field 115-v wiring. Check all factory and field electrical connections for tightness.

Field-supplied wiring shall conform with the limitations of 63_F (33_C) rise.

!CAUTION

FURNACE MAY NOT OPERATE HAZARD

Failure to follow this caution may result in intermittent furnace operation.

Furnace control must be grounded for proper operation or else control will lock out. Control must remain grounded through green/yellow wire routed to gas valve and manifold bracket screw.

115-V WIRING

Verify that the voltage, frequency, and phase correspond to that specified on unit 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 7 for equipment electrical specifications.

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Bryant 120 instruction manual Electrical Connections Electrical Shock and Fire Hazard, Electrical Shock Hazard, Wiring

120 specifications

The Bryant 120 is a remarkable system designed for residential and commercial heating and cooling needs, showcasing an impressive blend of efficiency, reliability, and advanced technology. As a part of Bryant's extensive line of HVAC solutions, the Bryant 120 stands out with its features and performance, making it an ideal choice for those seeking comfort year-round.

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