White Rodgers 1F72 151 Thermostat User Manual

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1F72-151  
1F79-111  
CONFIGURATION AND  
TERMINAL OUTPUTS  
Mounting  
hole  
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.  
W903  
Clip to  
Disable  
EMR  
W903  
O/B  
Terminal  
Switches  
Selection  
Reset Operation 1F79-111  
Feature  
If a voltage spike or static discharge blanks out  
the display or causes erratic thermostat opera-  
tion, you can reset the thermostat by pressing  
W906 for Emergency  
Heat Second Stage  
Fan Control  
,
and at the same time when system  
W904  
Clip for  
Celsius  
Mounting  
hole  
is switched from “OFF” to “HEAT” position.  
W905  
Clip for  
Slow Cycle  
Thermostat base  
Configuration Menu  
Displayed  
1F79-111  
Step  
Press  
or  
to select:  
1F72-151  
Step  
1F79-111  
1F72-151  
(Factory Default)  
Press Button(s)  
Press Button(s)  
COMMENTS  
Set SYSTEM  
switch to OFF  
and  
1
2
FA  
PRGM  
Select Fast (on) or slow (off) Second  
Stage Heat  
1
2
3
OFF  
for at least 2 seconds  
(ON)  
and RUN  
CL  
(OFF)  
and  
momentarily  
and  
momentarily  
3
4
Select Compressor lockout OFF or ON  
ON  
HOLD *  
HOLD *  
0 HI  
(0)  
Select temperature display adjustment  
higher or lower  
3 LO TO  
3 HI  
dL  
(ON)  
and  
4*  
5
HOLD **  
RUN  
Select display backlight OFF or ON  
Return to normal operation  
5*  
6
OFF  
momentarily  
Move SYSTEM  
switch from OFF  
* Not available on earlier models  
** Press HOLD to advance to next item or TIME to move backwards to previous item  
THERMOSTAT  
L
O/B  
Y
G
W2  
E
C
R
SYSTEM  
See Note **  
SYSTEM  
MONITOR  
SWITCH  
Changeover  
Relay*  
Fan  
Relay  
Emergency  
Relay  
Aux  
Relay  
Compressor  
Contactor  
(Stage 2)  
Hot  
24 VAC  
120 VAC  
Neutral  
* 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  
TRANSFORMER  
(Class II)  
** Jumper required to use a single Aux Heat for both Second Stage Heat and Emergency  
Typical wiring diagram for single transformer systems  
NOTE  
If safety circuits are in only one of the systems, remove  
the transformer of the system with NO safety circuits.  
THERMOSTAT  
SYSTEM  
L
O/B  
Y
G
W2  
E
C
R
CUT AND  
TAPE OFF!  
SYSTEM  
MONITOR  
SWITCH  
See Note **  
Changeover  
Relay*  
Fan  
Relay  
Limit or  
Safety  
Switches  
Emergency  
Relay  
HOT  
120 VAC  
NEUTRAL  
24 VAC  
Aux  
Relay  
(Stage 2)  
Compressor  
Contactor  
Hot  
24 VAC  
120 VAC  
Neutral  
TWO COMMONS MUST  
BE JUMPERED TOGETHER!  
TRANSFORMER  
(Class II)  
* 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  
** Jumper required to use a single Aux Heat for both Second Stage Heat and Emergency  
Typical wiring diagram for two transformer systems with NO safety circuits  
ꢀ88  

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