White Rodgers 1F79-111 White-Rodgers 70 Series Heat Pump Thermostat Wiring diagram
1F72-151
1F79-111
CONFIGURATION AND
TERMINAL OUTPUTS
Reset Operation 1F72-151
Ifavoltagespikeorstaticdischargeblanksout
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
W903
Clip to
Disable
EMR
Feature
L
R
E
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*
C
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
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
L
R
E
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*
C
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
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
Ifavoltagespikeorstaticdischargeblanksout
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.
1
(Factory Default)
to select:
2
OFF
4
Configuration Menu
3
CL
(OFF)
3 LO TO
3 HI
Set SYSTEM
switch to OFF
6
Move SYSTEM
switch from OFF
FA
(ON)
and
for at least 2 seconds
and
momentarily
and
momentarily
ON
0 HI
(0)
5*
OFF
and
momentarily
dL
(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
1
3
2
5
4*
1F79-111
Step
1F72-151
Step
HOLD *
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
TECHNICAL
HELP
www.white-rodgers.com
161
Also See for White Rodgers 1F79-111 White-Rodgers 70 Series Heat Pump Thermostat
- White Rodgers 1F79-111 White-Rodgers 70 Series Heat Pump Thermostat Catalog Page 2 pages
- White Rodgers 1F79-111 White-Rodgers 70 Series Heat Pump Thermostat Installation and Operation Instructions 6 pages
- White Rodgers 1F79-111 White-Rodgers 70 Series Heat Pump Thermostat Installation and Operation Instructions (French) 6 pages
- White Rodgers 1F79-111 White-Rodgers 70 Series Heat Pump Thermostat Specification Sheet 2 pages
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