White Rodgers 1F58 Thermostat User Manual

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1F58  
LowVoltageMulti-StageHeatPumpThermostat  
WHITE-RODGERS  
INSTALLATION 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  
This thermostat and subbase combination is designed to  
controlaheatpumpsystemwhereautomaticchangeover  
is not required. However, manual changeover of the  
reversing valve can be controlled by the wiring selection  
on the subbase and the switching of the SYSTEM switch  
to COOL or HEAT (see fig. 2).  
SYSTEM  
HEAT  
EMER.  
FAN  
OFF  
COOL  
ON  
AUTO  
90  
80  
70  
60  
50  
70  
80  
60  
90  
50  
PRECAUTIONS  
Ifindoubtaboutwhetheryourwiringismillivolt,line,orlow  
voltage, have it inspected by a qualified heating and air  
conditioning contractor, electrician, or someone familiar  
with basic electricity and wiring.  
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.  
Donotshortoutterminalsongasvalveorprimary  
control to test. Short or incorrect wiring will burn  
out heat anticipator and could cause personal  
injury and/or property damage.  
This control is a precision instrument, and should be  
handled carefully. Rough handling or distorting compo-  
nents could cause the control to malfunction.  
WARNING  
!
Do not use on circuits exceeding 30 volts. Higher  
voltage will damage control and could cause  
shock or fire hazard.  
SPECIFICATIONS  
ELECTRICAL DATA  
Anticipator Rating:  
Switch Rating:  
Stage 1 heat – 24 VAC, fixed  
Stage 2 heat – 0.15 to 1.2 amp, adjustable  
Cooling – 24 VAC, fixed  
24 VAC  
Stage 1 heat – 0 to 1.2 amp  
Stage 2 heat – 0.15 to 1.2 amp  
Cooling – 0 to 1.5 amp  
Switch Action:  
Fan Circuit: See Fig. 2 – FAN CAUTION  
THERMAL DATA  
Stage 1 heat & cool – SPDT  
Stage 2 heat – SPST (sealed mercury contacts)  
Temperature Range: 50°F to 90°F (10°C to 32°C)  
Rated Differential: Stage 1 heat – 1.5°F  
Stage 2 heat – 1°F  
Cooling – 1.5°F  
WHITE-RODGERS DIVISION  
EMERSON ELECTRIC CO.  
9797 REAVIS ROAD  
ST. LOUIS, MISSOURI 63123-5398  
PART NO. 37-5391A  
Printed in U.S.A.  
9505  
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INSTALLATION  
SELECT THERMOSTAT LOCATION  
ATTACH SUBBASE TO WALL  
Proper location insures that the thermostat will provide a 1. Pull wires through opening near center of subbase  
comfortable home temperature. Observe the following  
general rules when selecting a location:  
and connect wires under terminal screws (see figs. 2  
& 3).  
2. Push excess wire into wall and plug up hole with fire-  
resistant material, such as fiberglass insulation, to  
prevent drafts from affecting thermostat operation.  
1. Locate thermostat about 5 ft. above the floor.  
2. Install thermostat on a partitioning wall, not on an  
outside wall.  
3. Place subbase over hole in wall for wires and mark  
mounting hole locations on wall.  
3. Never expose thermostat to direct light from lamps,  
sun, fireplaces or any temperature radiating equip-  
ment.  
4. Drill mounting holes.  
5. Fasten subbase loosely to wall, as shown, using two  
mounting screws. Place a level against bottom of  
subbase, adjust until level, and then tighten mounting  
screws to secure subbase. If holes in wall are too  
large and do not allow you to tighten subbase snugly,  
use plastic screw anchors to secure subbase.  
4. Avoid locations close to windows, adjoining outside  
walls, or doors that lead outside.  
5. Avoid locations close to air registers or in the direct  
path of air from them.  
6. Make sure there are no pipes or duct work in that part  
of the wall chosen for the thermostat location.  
6. Check anticipator setting and adjust, if required (see  
OPERATION & MAINTENANCE).  
7. Never locate thermostat in a room that is warmer or  
cooler than the rest of the home, such as the kitchen.  
8. Avoid locations with poor air circulation, such as  
behind doors or in alcoves.  
CAUTION  
!
Care must be taken when securing and routing  
wiressotheydonotshorttoadjacentterminalsor  
rear of thermostat. Shorted wires may result in  
personal injury and/or property damage.  
9. The living or dining room is normally a good location,  
provided there is no cooking range or refrigerator on  
opposite side of wall.  
ROUTE WIRES TO LOCATION  
1. If an old thermostat is being replaced and is in a  
satisfactory location, and the wiring appears to be in  
good condition, use existing wiring. If in doubt, re-  
wire.  
1
⁄ ” hole for  
2
thermostat wire  
2. If a new location is chosen or if this is a new installa-  
tion, thermostat wire must first be run to the location  
selected. All wiring must conform with local and  
Stout cord with 6”  
chain attached  
Approximately  
5 feet from floor  
Baseboard  
strip moulding  
national electrical codes and ordinances.  
1
3. Probe for obstructions in partition before drilling ⁄  
2
1
⁄ ” guide hole  
4
for sighting  
hole in wall at selected location. Take up quarter  
round and drill a small guide hole for sighting (see fig.  
Quarter round  
removed  
1). From basement, drill 3⁄  
4
” hole in partition floor next  
to guide hole. In houses without basements, drill 1⁄  
2
holethroughceilingandintopartitionfromabove(see  
fig. 1).  
3
⁄ ” hole in floor of partition  
4
4. Through this hole drop a light chain, or 6” chain  
attached to a strong cord. Snag cord in basement  
with hooked wire. In houses without basements, drop  
cord through hole in ceiling and down partitioning;  
snag cord at the thermostat location.  
Hooked wire for snagging chain  
Figure 1. Routing thermostat wires  
5. Attach thermostat wire to cord and pull wire through  
hole in wall so that 6” of wire protrudes.  
2
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CAUTION  
NOTE  
!
To prevent electrical shock and/or equipment  
damage, disconnect electrical power to system,  
at main fuse or circuit breaker, until installation is  
complete.  
This typical wiring diagram shows only the terminal iden-  
tification and wiring hookup. Always refer to wiring  
instructions provided by equipment manufacturer for sys-  
tem hookup.  
All wiring should be installed in accordance with local and  
national codes and ordinances.  
FAN CAUTION  
!
Topreventpersonalinjuryand/orequipmentdam-  
age, check equipment manufacturer’s wiring of  
fan relay circuit when in EMER HEAT. When the  
thermostat system switch is in the EMER HEAT  
position, the thermostat DOES NOT energize the  
fan relay when the fan switch is in the AUTO  
position.  
Adjustable Stage 2  
Heat Anticipator  
COOL  
Fixed Stage 1 Heat  
& Cool Anticipator  
STAGE 2  
HEAT  
STAGE 1  
HEAT  
THERMOSTAT  
SUBBASE  
Fan  
Switch  
AUTO  
ON  
System  
Switch  
G
R
X1  
E
B
W2  
Y
O
HEAT PUMP  
SYSTEM  
SEE FAN  
CAUTION  
(ABOVE)  
EMER. HEAT  
RELAY  
AUXILIARY  
HEAT RELAY  
COMPRESSOR  
CONTACTOR  
FAN  
RELAY  
*
*
120 VAC  
24 VAC  
TRANSFORMER  
Reversing Valve – if the reversing valve in your heat pump energizes  
during HEAT, then make your electrical connection at terminal B on  
the subbase. If the reversing valve is energized during COOL, then  
make your connection at terminal O on the subbase.  
*
Always refer to equipment manufacturer’s instructions for proper  
identification of the reversing valve electrical connections.  
Figure 2. Typical wiring diagram  
3
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3. Attach thermostat base to subbase. Be sure that all  
captive screws are tightened snugly, because they  
serve as electrical connections between thermostat  
and subbase (see fig. 4).  
ATTACH THERMOSTAT TO SUBBASE  
1. Remove cover from thermostat base by gripping the  
base in one hand and with the fingers of the other  
hand, pull lightly at the top or bottom of the cover.  
4. Snap cover onto thermostat and set temperature  
lever to desired setpoint. Turn on electrical power.  
2. Carefully remove the shipping protective packing  
from the mercury switches.  
Mounting  
screws  
FAN  
AUTO  
ON  
FAN  
SYSTEM  
SYSTEM  
COOL  
AUTO ON COOL OFF HEAT EMER.  
OFF  
HEAT  
Captive terminal  
screws  
G
Y
R
E
W2  
X1  
O
B
60  
70  
50  
Subbase  
80  
90  
Captive terminal  
90  
80  
70  
screws  
Mounting screw  
Mounting screw  
KEEP THIS AREA  
Hole  
CLEAR OF WIRES! in wall  
60  
50  
Thermostat  
Figure 3. Thermostat subbase  
Cover  
Figure 4. Attach thermostat to subbase  
OPERATION &  
MAINTENANCE  
The chart below shows the how the system functions when  
the system and fan switches are in various positions.  
SUBBASE SWITCH POSITIONS  
SYSTEM FUNCTION  
FAN  
SYSTEM  
Emer  
Heat  
Aux  
Heat Compr.  
Fan  
Rev  
COMPONENT OPERATION  
Auto  
On  
Cool  
Off  
Heat  
Emer Relay Valve Relay Relay Contact  
No heat - no cool - no fan.  
Heat Mode: stage 1 calling. Fan relay and com-  
pressor contactor energized by thermostat.  
B
B
Heat Mode: both stages calling. Fan relay, com-  
pressor contactor, and auxiliary heat relay are  
energized.  
Emergency Heat Mode: stage 1 calling. Emergency  
heat relay energized. Compressor locked out at  
thermostat.  
G
G
B
B
O
Emergency Heat Mode: both stages calling. Emer-  
gency and auxiliary heat relays energized. Compres-  
sor locked out at thermostat.  
Cool Mode: Compressor contactor and fan relay  
energized.  
Fan relay energized. Fan runs continuously,  
regardless of system switch position.  
Indicates switch position on thermostat subbase  
and system function at those switch positions.  
Reversing valve energized if connected to the O terminal.  
O
G
Reversing valve energized if connected to B terminal.  
See fig. 2 (fan caution)  
B
4
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The stage 2 heat anticipator is located on the thermostat  
base. Adjust the anticipator by turning the lever until the  
pointer is set on the correct anticipator setting determined  
above (see fig. 6). If additional adjustments are neces-  
ADJUSTING STAGE 2 HEAT ANTICIPATOR  
This thermostat is equipped with two anticipators. The  
anticipator for stage 1 heat and cool is fixed and does not  
requireanyadjustments.Thestage2anticipatorisadjust-  
ableandmustbesettothecurrentdrawofthecomponent  
it is controlling.  
sary, they may be made as follows (adjust the anticipator  
1
2 division at a time; for example, from 0.6 to 0.55).  
1. Ifshorterheatingcyclesaredesired, settheanticipa-  
tor to a slightly lower setting.  
To determine the correct stage 2 anticipator setting,  
measure the current draw of the stage 2 (auxiliary heat)  
relay. You may use the following procedure to determine  
current draw.  
2. If longer heating cycles are desired, set the anticipa-  
tor to a slightly higher setting.  
1. Loosely wrap exactly 10 coils of thermostat wire  
around the jaws of a split-jaw induction-type current  
meter (see fig. 5).  
2. With the subbase correctly wired to the heat pump  
system, attach one end of the 10-turn coil to terminal  
R and attach the other end to terminal W1.  
Split jaw  
current meter  
10 turns  
of wire  
3. With the heat pump system power on, center the coil  
on the meter jaws and read the current draw of the  
stage2heatrelayonthemeteranddividethereading  
by 10. This is the value that should be set on the  
adjustable anticipator.  
Figure 5. Current meter  
.25  
.3  
.4  
G
.2  
Example:  
.5  
.18  
Meter reads 6.0 amp  
= 0.6ampanticipatorsetting  
10 turns of wire  
.6  
.8  
.15  
1.0  
4. Turn power to heat pump system off, then remove  
coil leads from the subbase and move system switch  
to OFF.  
Move this lever to  
adjust heat  
Arrow points to the  
matched current rating  
of the primary control  
anticipator  
Figure 6. Anticipator adjustment  
5. Move temperature adjustment lever to correspond to  
actual room temperature. Then remove thermostat  
cover.  
CALIBRATION ADJUSTMENT  
This thermostat has been carefully adjusted at the factory  
and should not require recalibration.  
7
6. Slip 32” wrench onto hex nut, holding temperature  
adjustment lever  
A few degrees difference between the indicator setting of  
thethermostatandactualroomtemperatureisnotconsid-  
ered important. If the disagreement is appreciable, how-  
ever, first make sure that the thermostat is properly  
located and leveled. Then, if recalibration still seems  
necessary, proceed as follows:  
Temperature  
adjustment  
1. Movetemperatureadjustmentlevertoasettingabout  
5° above room temperature.  
lever  
Bimetal  
2. Remove thermostat cover. Slip 732” wrench onto hex  
nut beneath bimetal and hold temperature adjust-  
ment lever stationary. Turn hex nut clockwise until  
mercury shifts to right end of tube (see fig. 7).  
7
32” calibration  
wrench  
3. Move temperature adjustment lever to lowest setting.  
4. Replace thermostat cover. Wait 10 minutes for bi-  
metal temperature to stabilize. Don’t stand near ther-  
mostat during this period as your breath and body  
heat will affect temperature of bimetal.  
Figure 7. Calibrating thermostat  
5
If you need further information about this product, please write to  
WHITE-RODGERS DIVISION  
Emerson Electric Co.  
9797 Reavis Road  
St. Louis, MO 63123-5398  
Attn: Technical Service Department  

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