White Rodgers 1F95EZ-0671 specifications Wiring Diagrams, 3-WireSPDT Heat Only Zone Valve Wiring

Remove Jumper Wire between RH & RC

WIRING DIAGRAMS

Figure 2 – Single Stage, SS1, or Multi-Stage, MS2, System (No Heat Pump)

with Single Transformer (Gas, Oil or Electric)

Jumper

	L	O/B	Y	Y2	W/E	W2	G	RH	RC	C	6
System
Single	Diagnostic	O					Blower/
		Energized Constantly
Stage 1						No Output	Circulator			*
	Indicator	in		No	Heat			24 Volt	24 Volt
(SS1)	Input	Cool Mode					Fan Energized			Optional
			Cool Mode	Output	Mode		on Call for	(Hot)	(Hot)	24 Volt
	or
	System	B	1st Stage		1st Stage		Cool (and	Heat	Cool	(Com-
Multi-
	Malfunction			Cool		Heat Mode	Heat if			mon)
Stage 2		Energized Constantly					configured
	Switch	in Heat, Off,		Mode		2nd Stage
(MS2)	Input			2nd			for Electric
		Emergency		Stage			Heat)
		Mode

Comfort Alert II Module

or Similar System

Diagnostic Module

See Module Instructions

for details

NEUTRAL
24VAC	120VAC
HOT
* Common connection required for diagnostic or malfunction indication.
CLASS II
TRANSFORMER

Figure 3 – Single Stage, SS1, or Multi-Stage, MS2, System (No Heat Pump)

with Two Transformer (Gas, Oil or Electric)

Jumper

L

O/B

Y

Y2

W/E

W2

G

RH

RC

C

System

Single

O

Blower/

Energized Constantly

Stage 1

No Output

Circulator

*

in

No

(SS1)

Diagnostic

Heat

Fan Energized

24 Volt

24 Volt

Cool Mode

Cool Mode

Output

on Call for

Optional

Indicator

Mode

(Hot)

(Hot)

24 Volt

(Optional)

B

1st Stage

1st Stage

Cool (and

Heat

Cool

(Com-

Multi-

Cool

Heat Mode

Heat if

mon)

Stage 2

Energized Constantly

Mode

2nd Stage

configured

(MS2)

in Heat, Off,

2nd

for Electric

Emergency

Stage

Heat)

Mode

NEUTRAL

24VAC

120VAC

NEUTRAL

HOT

120VAC

24VAC

COOLING

HOT

CLASS II

HEATING

TRANSFORMER

CLASS II

* Common connection required for diagnostic or malfunction indication.

TRANSFORMER

Figure 4 – Heat Pump Systems, HP1 (Single Stage Compressor System with Gas or Electric backup),

HP2 (Multi-Stage Compressor or Two Compressor System with Gas or Electric backup)

							Jumper
L	O/B	Y	Y2	+W/E	+W2	G	RH RC	C	6

System

Heat Mode - 2nd

Heat Mode - 3rd

O

Stage, Emergency

Stage, Emergency

Heat Pump 1

Mode - 1st Stage

Mode - 2nd Stage

Blower/

Energized in

No

+Note: Dual Fuel option

+Note: Dual Fuel option

Circulator Fan

*

(HP1)

Diagnostic

Heat and

de-energizes Heat mode

de-energizes Heat mode

Cool Mode

Output

stage 1 (compressor)

stage 1 (compressor)

Energized on

24 Volt

24 Volt

Optional

Indicator

Cool Mode

when auxiliary heat

when auxiliary heat

Call for Heat

24 Volt

B

is energized

is energized

or Cool.

(Hot)

(Hot)

(Com-

or System

1st Stage

Heat Mode - 3rd

Heat Mode-4th

Heat

Cool

Heat Pump 2

Malfunction

Energized in

(Compressor)

2nd

Set Elect/Gas

mon)

Stage, Emergency

Stage. Emergency

(HP2)

Switch

Heat, Off,

Stage

Mode - 1st Stage

Mode - 2nd Stage

Option for

Emergency

(Com-

+Note: Dual Fuel option

+Note: Dual Fuel option

Emergency

Mode

pressor)

de-energizes Heat mode

de-energizes Heat mode

mode

stage 1 (compressor)

stage 1 (compressor)

when auxiliary heat

when auxiliary heat

is energized

is energized

Comfort Alert II Module

or Similar System

NEUTRAL

Diagnostic Module

24VAC

See Module Instructions

HOT

for details

* Common connection required for diagnostic or malfunction indication.

CLASS II

+ Dual Fuel option, if selected turns off compressor(s) when Auxiliary stages energize.

TRANSFORMER

120VAC

Figure 5 – 3-Wire (SPDT) Heat Only Zone Valve Wiring

Jumper

	6	Y	W	G	RH	RC	C
System
Single Stage							Constant
3-wire	Closes		Opens	Blower/Circulator	24 Volt	24 Volt
							24 Volt
Zone Valve	Valve		Valve	Fan Energized	(Hot)	(Hot)	(Com-
application	(6)		(4)		Heat	Cool	mon)
					(5)

NEUTRAL
24VAC		120VAC
HOT		3
	CLASS II
TRANSFORMER