White Rodgers 1F85-0422 User Manual

80 Series Thermostat

Wiring Diagrams for 1F83-0422 & 1F85-0422

Single Stage, Multi-Stage, Heat Pump

Heat Pump Connections

If you do not have a heat pump system, refer to figures 2 & 3. Refer to equipment manufacturers’ instructions for specific system wiring information.

You can configure the thermostat for use with the following heat pump systems.

HEAT PUMP TYPE 1 (HP 1). Single stage compressor system; gas or electric backup.

Figure 1 – Heat Pump Systems

Jumper

Jumper

NOTE: If your system

L

O/B

Y

Y2

W/E

W2

G

RH

RC

C

does not provide an E

connection, jumper W2 to

System

W/E to use the Auxiliary

Heat in the Emergency

O

Blower/

Mode.

Fault Indicator

Energized in

Circulator

Cool Mode

Heat and

Emergency

Heat Mode

Fan Energized

Optional*

or

2nd Stage.

on Call for

24 Volt

24 Volt

* Common connection

Heat Pump 1

B

Cool Mode

No

24 Volt

(HP1)

System

1st Stage

Output

Mode

Emergency

Heat or Cool.

(Hot)

(Hot)

(Com-

required for fault or

Malfunction

Energized in

(Compressor)

1st Stage

Mode 2nd

Set Elect/Gas

Heat

Cool

mon)

Switch

Heat, Off,

Stage

Option for

malfunction indication.

Emergency

Emergency

Mode

Mode

Comfort Alert II Module

or Similar System

Malfunction Module

NEUTRAL
24VAC	120VAC
HOT
CLASS II
TRANSFORMER

Single Stage and Multi-Stage Connections

Refer to equipment manufacturers’ instructions for specific system wiring information.

This thermostat is designed to operate a single-transformer or twotransformer system.

You can configure the thermostat for use with the following fossil fuel systems:

SINGLE STAGE (SS 1) gas, oil or electric. MULTI-STAGE (MS 2) gas, oil or electric.

After wiring, see INSTALLER CONFIGURATION section for proper thermostat configuration.

Figure 2 – Single Stage or Multi-Stage System (No Heat Pump) with Single Transformer

Jumper

L

O/B

Y

Y2

W/E

W2

G

RH

RC

C

System

Single

O

Blower/

Fault

Energized Constantly

Stage 1

No Output

Circulator

in

(SS1)

Indicator

No

Heat

Fan Energized

24 Volt

24 Volt

Optional*

Cool Mode

or

Cool Mode

Output

Mode

on Call for

(Hot)

(Hot)

24 Volt

System

B

1st Stage

1st Stage

Cool (and

Heat

Cool

(Com-

Multi-

Malfunction

Cool

Heat Mode

Heat if

mon)

Stage 2

Switch

Energized Constantly

Mode

2nd Stage

configured

(MS2)

in Heat, Off,

2nd

for Electric

Emergency

Stage

Heat)

Mode

*Common connection required for fault or

malfunction indication.

Comfort Alert II Module

or Similar System

Malfunction Module

NEUTRAL
24VAC	120VAC
HOT
CLASS II
TRANSFORMER

www.white-rodgers.com	PART NO. 37-6895B
	Replaces 37-6895A
	0825

Figure 3 – Single Stage or Multi-Stage System (No Heat Pump) with Two Transformers

NOTE: If continuous backlight or

Remove Jumper Wire

hardwired power input are desired but

Jumper

do not function in both HEAT and COOL

between RH & RC

L

O/B

Y

Y2

W/E

W2

G

RH

RC

C

modes, cut the heating transformer 24V

wires and tape off. Connect the neutral

System

circuit disconnected from the heating

transformer to the neutral circuit of the

Blower/

Single

O

B

No Output

cooling transformer. Disconnect the wire

Stage 1

Circulator

to the RH terminal and install a jumper

(SS1)

Fault

Energized

Energized

No

Heat

Fan Energized

24 Volt

24 Volt

Optional

Indicator

Constantly

Constantly

Cool Mode

Output

Mode

on Call for

(Hot)

(Hot)

24 Volt

between RH and RC. Depending on

(NOT

in

in Heat, Off,

1st Stage

1st Stage

Cool (and

Heat

Cool

(Com-

the system requirements, replace the

Multi-

USED)

Cool Mode

Emergency

Cool

Heat Mode

Heat if

mon)

Mode

Stage 2

Mode

2nd Stage

configured

cooling transformer with a 75VA class II

for Electric

(MS2)

2nd

transformer if needed.

Stage

Heat)

NEUTRAL

NEUTRAL

24VAC

120VAC

HOT

120VAC

24VAC

COOLING

HOT

CLASS II

HEATING

TRANSFORMER

CLASS II

TRANSFORMER

Figure 4 – 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

CLASS II

TRANSFORMER

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