White Rodgers 1F72-151 Quick guide

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188

TECHNICAL HELP

1F72-151

1F79-111

CONFIGURATION AND

TERMINAL OUTPUTS

Reset Operation 1F72-151

If a voltage spike or static discharge blanks out

the display or causes erratic thermostat opera-

tion, you can reset the thermostat by pressing

, and TIME at the same time.

Thermostat base

W905

Clip for

Slow Cycle

W904

Clip for

Celsius

Mounting

hole

W906 for Emergency

Heat Second Stage

Fan Control

O/B

Terminal

Switches

Selection

Mounting

hole

W903

Clip to

Disable

EMR

Feature

24 VAC 120 VAC

Hot

SYSTEM

MONITOR

SWITCH

Neutral

THERMOSTAT

SYSTEM

G W2

Typical wiring diagram for single transformer systems

TRANSFORMER

(Class II)

Changeover

Relay*

CYO/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

Aux

Relay

(Stage 2)

Fan

Relay

Emergency

Relay

See Note **

** Jumper required to use a single Aux Heat for both Second Stage Heat and Emergency

24 VAC 120 VAC

Hot

SYSTEM

MONITOR

SWITCH

Neutral

THERMOSTAT

SYSTEM

G W2

Typical wiring diagram for two transformer systems with NO safety circuits

TRANSFORMER

(Class II)

Changeover

Relay*

CYO/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

Aux

Relay

(Stage 2)

Fan

Relay Emergency

Relay

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

** Jumper required to use a single Aux Heat for both Second Stage Heat and Emergency

See Note **

Reset Operation 1F79-111

If a voltage spike or static discharge blanks out

the display or causes erratic thermostat opera-

tion, you can reset the thermostat by pressing

, and at the same time when system

is switched from “OFF” to “HEAT” position.

(Factory Default) to select:

OFF

Configuration Menu

(OFF)

3 LO TO

3 HI

Set SYSTEM

switch to OFF

Move SYSTEM

switch from OFF

(ON)

and

for at least 2 seconds

and

momentarily

and

momentarily

0 HI

(0)

OFF

and

momentarily

(ON)

* Not available on earlier models

** Press HOLD to advance to next item or TIME to move backwards to previous item

Return to normal operation

1F79-111

Press Button(s)

Displayed Press or

1F72-151

Press Button(s)

PRGM

and RUN

1F79-111

Step

1F72-151

Step

HOLD *

HOLD **

RUN

COMMENTS

Select Fast (on) or slow (off) Second

Stage Heat

Select Compressor lockout OFF or ON

Select temperature display adjustment

higher or lower

Select display backlight OFF or ON

This manual suits for next models

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