Background Image
Previous Page  154 / 221 Next Page
Information
Show Menu
Previous Page 154 / 221 Next Page
Page Background

TYPICAL WIRING

1F80-0224/1F86-0244

1F80-0261/1F87-0261

TYPICAL WIRING DIAGRAMS

R

C

24 VAC

120 VAC

Hot

Neutral

THERMOSTAT

SYSTEM

G

W

Typical wiring diagram for single transformer single stage systems

TRANSFORMER

(Class II Current Limited)

Changeover

Relay*

Y

O/B

Compressor

Contactor

* Changeover Relay is energized in COOL when O/B switch is in the “O” position

Changeover Relay is energized in HEAT when O/B switch is in the “B” position

Heat Relay

Fan

Relay

Optional

Optional Jumper for

Single Stage Heat Pump

R

C

24 VAC

120 VAC

Hot

Neutral

THERMOSTAT

SYSTEM

G

W

Typical wiring diagram for two transformer single stage systems with NO safety circuits

TRANSFORMER

(Class II Current Limited)

Changeover

Relay*

Y

O/B

Compressor

Contactor

* Changeover Relay is energized in COOL when O/B switch is in the “O” position

Changeover Relay is energized in HEAT when O/B switch is in the “B” position

Heat Relay

Fan

Relay

Optional

Limit or

Safety

Switches

TWO COMMONS MUST

BE JUMPERED TOGETHER!

HOT

NEUTRAL

120 VAC

24 VAC

CUT AND

TAPE OFF!

If safety circuits are in

only one of the systems,

remove the transformer

of the system with

NO

safety circuits.

NOTE

Optional Jumper for

Single Stage Heat Pump

www.white-rodgers.com

155

TECHNICAL HELP