White Rodgers 1F89 11 Thermostat User Manual

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1F89-11  
Non-Programmable Electronic Digital  
Heat Pump Thermostat  
WHITE-RODGERS  
INSTALLATION AND  
OPERATION INSTRUCTIONS  
Operator: Save these instructions for future use!  
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY  
BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE  
PERSONAL INJURY AND/OR PROPERTY DAMAGE.  
DESCRIPTION  
Your new White-Rodgers Digital Heat Pump Thermostat  
uses the technology of a solid-state microcomputer to  
provide precise temperature control. This thermostat of-  
fers you the flexibility to set heating and cooling tempera-  
tures that fit your needs.  
°F/°C convertibility  
• Temperature range 45° to 90°F  
• Eight terminals for single or two-transformer systems  
• O/B terminal for heat pump systems  
• Armchair Demonstration Capability  
Features:  
• Simultaneous heat and cool temperature storage  
• LCD continuously displays set point and room tem-  
perature  
PRECAUTIONS  
This thermostat is intended for use with a 24-volt system;  
do not use this thermostat with a millivolt or line voltage  
system. If in doubt about whether your wiring is millivolt,  
line, or low voltage, have it inspected by a qualified  
heating and air conditioning contractor or electrician.  
CAUTION  
!
To prevent electrical shock and/or equipment  
damage disconnect electric power to system at  
main fuse or circuit breaker box until installation  
is complete.  
Do not exceed the specification ratings.  
All wiring must conform to local and national electrical  
codes and ordinances.  
WARNING  
Do not use on circuits exceeding specified volt-  
age. Higher voltage will damage control and  
could cause shock or fire hazard.  
!
This control is a precision instrument, and should be  
handled carefully. Rough handling or distorting compo-  
nents could cause the control to malfunction.  
Do not short out terminals on gas valve or pri-  
marycontroltotest. Shortorincorrectwiringwill  
damage thermostat and could cause personal  
injury and/or property damage.  
SPECIFICATIONS  
ELECTRICAL DATA  
Electrical Rating:  
Operating Humidity Range:  
0 to 90% RH (non-condensing)  
Shipping Temperature Range:  
-40°F to 150°F  
20 to 30 VAC 50/60 Hz. or D.C.  
0.05 to 1.5 Amps (Load per terminal)  
1.5 Amps Maximum Total Load (All terminals  
combined)  
APPLICATIONS  
For use with:  
THERMAL DATA  
• Heat pump systems with up to two stages heat,  
one stage cool  
Setpoint Temperature Range:  
45°F to 90°F (7°C to 32°C)  
Operating Ambient Temperature Range:  
32°F to 105°F  
DO NOT USE WITH:  
• Millivolt systems  
• Systems exceeding 30 VAC and 1.5 amps  
• 3-wire zoned hydronic heating systems  
WHITE-RODGERS DIVISION  
EMERSON ELECTRIC CO.  
9797 REAVIS ROAD  
PART NO. 37-5741A  
Printed in U.S.A.  
Replaces 37-5612B  
9636  
ST. LOUIS, MISSOURI 63123-5398  
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INSTALLATION  
REMOVE OLD THERMOSTAT  
W904  
CUT FOR  
NON-ELECTRIC  
AUX.  
1. Shutoffelectricityatthemainfuseboxuntilinstallation  
is complete. Ensure that electrical power is discon-  
nected.  
BATTERY CUTOUT FOR  
ARMCHAIR DEMONSTRATION  
2. Remove the front cover of the old thermostat. With  
wires still attached, remove wall plate from the wall.  
Iftheoldthermostathasawallmountingplate, remove  
the thermostat and the wall mounting plate as an  
assembly.  
O
B
3. Identify each wire attached to the old thermostat  
usingthelabelsenclosedwiththenewthermostat.  
4. Disconnectthewiresfromoldthermostatoneatatime.  
DO NOT LET WIRES FALL BACK INTO THE WALL.  
Figure 1. Back of thermostat base  
5. Install new thermostat using the following procedures.  
Reset Button  
ATTACH THERMOSTAT BASE TO WALL  
Screw anchors  
1. Remove the packing material from the thermostat.  
2. If necessary, cut the non-electric heat jumper (see  
NON-ELECTRIC HEAT SYSTEMS). Check the set-  
ting of the O/B switch (see O/B TERMINAL SWITCH  
SELECTION).  
C
L
E
G
3. If you want to review the thermostat features before  
mounting the thermostat on the wall, see ARMCHAIR  
DEMONSTRATION.  
W2  
Y
R
O/B  
4. Gently pull the thermostat cover straight off the base.  
Forcing or prying on the thermostat will cause damage  
to the unit.  
FAN ON  
AUTO  
OFF  
HEAT  
COOL  
EMER  
Mounting  
holes  
5. Check that the system switch is in the OFF position.  
Connect wires beneath terminal screws on base using  
appropriate wiring schematic (see figs. 3 through 5).  
Figure 2. Thermostat base  
6. Place base over hole in wall and mark mounting hole  
locations on wall using base as a template.  
If your emergency or auxiliary heat system is electric and  
requires that the thermostat energize the fan circuit, do  
not cut jumper W904.  
7. Move base out of the way. Drill mounting holes.  
8. Fasten base loosely to wall, as shown in fig. 2, using  
two mounting screws. Place a level against bottom of  
base, adjust until level, and then tighten screws. (Lev-  
eling is for appearance only and will not affect thermo-  
stat operation.) If you are using existing mounting  
holes, or if holes drilled are too large and do not allow  
you to tighten base snugly, use plastic screw anchors  
to secure subbase.  
O/B TERMINAL SWITCH SELECTION  
The O/B switch on this thermostat is factory set to the “O”  
position.Thiswillaccommodatethemajorityofheatpump  
applications, which require the changeover relay to be  
energizedin COOL. Ifthethermostatyouarereplacingor  
the heat pump being installed with this thermostat require  
9. Push excess wire into wall and plug hole with a fire- the “B” terminal, to energize the changeover relay in  
resistant material (such as fiberglass insulation) to HEAT, the O/B switch must be moved to the “B” position.  
prevent drafts from affecting thermostat operation.  
ARMCHAIR DEMONSTRATION  
NON-ELECTRIC HEAT SYSTEMS  
Armchair Demonstration is a unique feature that allows  
Read the following information before clipping the non- you to review your thermostat features before being  
electric heat jumper. If you are unsure of your application, mounted on the wall.  
contact a qualified serviceperson.  
If you wish an Armchair Demonstration of your thermo-  
Ifyouremergencyorauxiliarysystemisnon-electric(gas, stat, temporarily hold a new 9-volt battery against the  
oil, etc.) and will energize the blower, then jumper, W904, wires in the battery cutout on the back of the thermostat  
onthebackofthethermostatbasemustbecut(seefig. 1). base for approximately 45 seconds. This will provide a  
charge that will last approximately 30 to 45 minutes to  
allow the thermostat to be observed.  
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NOTE  
the original manufacturer's instructions.  
The following wiring diagrams show typical terminal  
identification and wiring. For proper installation, refer to  
Relay contacts shown are thermostatically operated.  
FAN ON  
MALF  
Thermostat  
Control  
FAN  
AUTO  
Heat  
FAN  
AUTO  
Emer  
Circuit  
EMERGENCY  
or Cool  
THERMOSTAT  
SYSTEM  
L
O/B  
Y
G
W2  
E
C
R
SYSTEM  
MONITOR  
SWITCH  
Changeover  
Relay*  
Fan  
Relay  
Emergency  
Relay  
Aux/Emer  
Relay  
(Stage 2)  
Compressor  
Contactor  
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  
Figure 3. Typical wiring diagram for single transformer systems  
NOTE  
FAN ON  
MALF  
If safety circuits are in  
only one of the systems,  
remove the transformer  
of the system with NO  
safety circuits.  
Thermostat  
Control  
Circuit  
FAN  
AUTO  
Heat  
FAN  
AUTO  
Emer  
EMERGENCY  
E
or Cool  
THERMOSTAT  
SYSTEM  
L
O/B  
Y
G
W2  
C
R
CUT AND  
TAPE OFF!  
SYSTEM  
MONITOR  
SWITCH  
Changeover  
Relay*  
Fan  
Relay  
Emergency  
Relay  
Limit or  
Safety  
Switches  
HOT  
120 VAC  
24 VAC  
Aux/Emer  
Relay  
(Stage 2)  
Compressor  
Contactor  
Hot  
NEUTRAL  
24 VAC  
120 VAC  
Neutral  
TWO COMMONS MUST  
BE JUMPERED TOGETHER!  
TRANSFORMER  
* 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  
Figure 4. Typical wiring diagram for two transformer systems with NO safety circuits  
NOTE  
Polarity must be observed. If the HOT side of  
the second transformer is jumpered to the  
COMMON side of the first transformer a short  
will be made. Damage to equipment will occur  
when power is restored.  
FAN ON  
MALF  
Thermostat  
Control  
Circuit  
FAN  
AUTO  
Heat  
FAN  
AUTO  
Emer  
EMERGENCY  
E
or Cool  
THERMOSTAT  
L
O/B  
Y
G
W2  
C
R
SYSTEM  
Limit or  
Safety  
Limit or  
Safety  
Switches  
HOT  
Switches  
24 VAC  
120 VAC  
SYSTEM  
MONITOR  
SWITCH  
Changeover  
Relay*  
Fan  
Relay  
NEUTRAL  
Emergency  
Relay  
24 VAC  
Auxiliary  
Heating  
Transformer  
NOTE  
ACCESSORY  
RELAY N.O.  
CONTACT  
Aux/Emer  
Relay  
(Stage 2)  
The accessory relay scheme  
is required when safety  
circuits exist in both systems.  
Compressor  
Contactor  
COMMON  
TWO COMMONS MUST  
BE JUMPERED TOGETHER!  
Limit or  
Limit or  
Safety  
Switches  
Safety  
HOT  
Switches  
* 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  
24 VAC  
120 VAC  
COMMON  
NEUTRAL  
Heat Pump Transformer  
Figure 5. Typical wiring diagram for two transformer systems with safety circuits in BOTH systems  
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Cooling System  
ADJUSTABLE ANTICIPATION  
The first stage has anticipation that can be set to 2.5 or  
4cyclesperhourforheatingorcooling. Thesecondstage  
heat has a fixed anticipation. To change the first stage  
anticipationintheHEATmode, placetheSYSTEMswitch  
CAUTION  
To prevent compressor and/or property dam-  
age, if the outdoor temperature is below 50°F,  
DO NOT operate the cooling system.  
!
intheOFFposition.Whileholdingthe  
button,movethe  
SYSTEM switch to HEAT. The display will show S for 1. Move SYSTEM switch to COOL position.  
slow (factory setting) or F for fast. Release the  
button  
2. Press  
to adjust thermostat setting below room  
when the desired anticipation setting is displayed.  
temperature. The blower should come on immediately  
on high speed, followed by cold air circulation. How-  
ever, if the fan is running but the compressor is not  
running and the word COOL is flashing, the compres-  
sor lockout feature is operating (see Lockout Bypass  
Optiontotemporarilyoverridethecompressorlockout  
feature during testing).  
CHECK THERMOSTAT OPERATION  
If at any time during testing your system does not operate  
properly, contact a qualified serviceperson.  
Fan Operation  
3. Press  
to adjust temperature setting above room  
1. Turn on power to the system.  
temperature. The cooling system should stop oper-  
ating.  
2. Move SYSTEM switch to OFF position.  
3. Move FAN switch to ON. The blower should begin to  
operate.  
4. MoveFANswitchtoAUTOposition.Theblowershould  
stop within a short period of time.  
Heating System  
1. Move SYSTEM switch to HEAT position. If the auxil-  
iary heating system has a standing pilot, be sure to  
light it.  
2. Press  
to adjust thermostat setting to 90° and hold  
for five seconds. Both stages of the heating system  
should begin to operate. However, if the word HEAT is  
flashing, the compressor lockout feature is operating  
(see Lockout Bypass Option to temporarily override  
the compressor lockout feature during testing).  
3. Press  
to adjust temperature setting below room  
LOCKOUT BYPASS OPTION  
temperature. The auxiliary heating system will stop  
immediately, and the first stage will stop within three  
to four minutes.  
FOR QUALIFIED SERVICE TECHNICIANS’ USE  
ONLY.OPERATORSSHOULDNOTUSETHISFEA-  
TURE DUE TO POSSIBILITY OF EQUIPMENT OR  
PROPERTY DAMAGE, OR PERSONAL INJURY.  
COMPRESSOR SHORT TERM  
CYCLE PROTECTION  
This thermostat has a built-in short term (5-minute)  
time delay. During this 5-minute period, the thermo-  
stat will lock out the compressor to allow head pres-  
sure to stabilize. If you want to override this feature  
while testing thermostat operation, move the SYS-  
TEM switch to OFF position for 6 to 10 seconds then  
back to the desired mode.  
DO NOT USE THE LOCKOUT BYPASS OPTION  
UNLESSTHECOMPRESSOROILHEATERSHAVE  
BEEN OPERATIONAL FOR 6 HOURS AND THE  
SYSTEM HAS NOT BEEN OPERATIONAL FOR AT  
LEAST 5 MINUTES.  
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OPERATION  
Before you begin operating your thermostat, you should  
be familiar with its features and with the display and the  
location and operation of the thermostat buttons. Your  
thermostat consists of two parts: the thermostat cover  
and the base. To remove the cover, gently pull it straight  
out from the base. To replace the cover, line up the cover  
with the base and press gently until the cover snaps onto  
the base.  
EMER  
MALF  
AUX  
1
2
WHITE-RODGERS  
OFF HEAT  
FAN ON  
AUTO  
COOL  
EMER  
THE THERMOSTAT BASE  
Other than the  
and  
buttons, the following are  
located behind the door on the bottom of the thermostat  
cover (see fig. 6). Pull the door down to open it.  
3
4
The Thermostat Buttons and Switches  
6
5
(Red arrow) Raises temperature setting.  
(Blue arrow) Lowers temperature setting.  
FAN switch (ON, AUTO).  
1
2
3
4
HEAT  
OFF  
COOL  
EMERGENCY  
7
8
SYSTEM switch (COOL, OFF, HEAT, EMER).  
Figure 6. Thermostat display, buttons, and switches  
The Display  
HEAT is displayed when the SYSTEM switch is in the  
1. Place the SYSTEM switch in the OFF position.  
5
HEAT position. COOL is displayed when the SYS-  
TEM switch is in the COOL position. COOL or HEAT  
is displayed (flashing) when the compressor is in  
lockout mode. OFF is displayed when the SYSTEM  
switch is in the OFF position.  
2. While holding the  
button, move the SYSTEM  
switch to HEAT or COOL. Release the  
button  
when the display shows only the current tem-  
perature.  
3. Press  
or  
toadjustthedisplayedtemperature  
Displays current room temperature.  
6
7
to your desired setting.  
4. Thethermostatwillresumenormaloperationwithin  
two minutes.  
EMERGENCY is displayed when the system switch  
is in the EMER position.  
Displays current set temperature.  
8
RESET BUTTON - (see fig. 2) resets the thermostat  
to the factory setting. This button can be used to reset  
the thermostat if it has been subjected to a voltage  
spike and has become scrambled or frozen.  
OPERATING FEATURES  
Now that you are familiar with the thermostat buttons and  
display, read the following information to learn about the  
many features of the thermostat.  
SETTING YOUR THERMOSTAT  
This thermostat is easy to operate. Set the SYSTEM  
TEMPERATURESETPOINTPress  
the display shows the temperature you want.  
°F/°C CONVERTIBILITY — Press and  
tons until the temperature display is in Celsius (°C).  
To display Fahrenheit (°F), repeat the process.  
TEMPERATURE DISPLAY ADJUSTMENT — Your  
new thermostat has been accurately set in our fac-  
tory. However, if you wish, you may adjust your new  
thermostat temperature display to match your old  
thermostat. This can be accomplished (within a ±4°  
range) as follows:  
or  
until  
switch to HEAT, COOL or EMERgency. Press  
or  
untilthetemperaturetomaintainisshownontherightside  
of the display. To turn the system off, move the SYSTEM  
switch to OFF.  
but-  
TheFANswitchcontrolsthefanoperation.WhentheFAN  
switch is set to AUTO, the fan will cycle with the Heat  
Pump. When the FAN switch is set to ON, the fan will run  
continuously, regardless of SYSTEM switch position.  
5

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