White Rodgers 1F95-0477 Wiring Diagrams, Rh Rc, Jumper, System, Single Stage 3-wire, 120VAC

WIRING DIAGRAMS

Figure 5 – Single Stage or Multi-Stage System (No Heat Pump) with Two Transformers

Jumper

Remove Jumper Wire

between RH & RC

L

O/B

Y

Y2

W/E

W2

G

RH

RC

C

System

Single

O

No

Blower/

Stage 1

Energized Constantly

No Output

Circulator

Output

(SS1)

Fault

in Cool Mode

Fan Energized

Optional

Heat

24 Volt

24 Volt

Indicator

B

Cool Mode

on Call for

24 Volt

(NOT

1st Stage

Mode

Cool (and

(Hot)

(Hot)

(Com-

Heat

Cool

Multi-

USED)

Energized Constantly

Cool

1st Stage

Heat Mode

Heat if

mon)

in Heat, Off,

Mode

configured

Stage 2

Emergency

2nd Stage

for Electric

2nd

(MS2)

Mode

Heat)

Stage

NEUTRAL

NEUTRAL

24VAC

120VAC

HOT

120VAC

24VAC

COOLING

HOT

HEATING

CLASS II

TRANSFORMER

CLASS II

TRANSFORMER

Figure 6 – 3-Wire (SPDT) Heat Only Zone Valve Wiring

				Jumper
6	Y	W	G	RH RC	C

System

Single Stage

3-wire

Zone Valve application

Closes

Valve

(6)

Opens

Valve

(4)

Blower/Circulator

Fan Energized

24Volt (Hot) Heat

(5)

24Volt (Hot) Cool

Constant

24Volt (Com- mon)

NEUTRAL

24VAC

HOT

120VAC

CLASS II

TRANSFORMER

4