White Rodgers 1F58-72 Thermostat User Manual
Contents
1. ON te EA O O 1 On roy VAA System i een o Switch va e On gt O x The emergency light cycles with gt emergency heat Os The auxiliary light cycles with stage 2 heat in either HEAT or EMER sys CHECK R hy tem switch positions Light EMER i x a A If a malfunction switch is wired to Light terminal L the check light will indi f cate a malfunction when switch AUX Light contacts close lt H C20 0 4 0 i HEAT PUMP e SYSTEM FAN Malfunction EMER HEAT AUXILIARY COMPRESSOR i RELAY Switch RELAY 1 HEAT RELAY CONTACTOR 120 VAC 24 VAC aS oa e ee a io O e TRANSFORMER x 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 ATTACH THERMOSTAT TO SUBBASE 3 Attach thermostat base to subbase Be sure that all captive screws are tightened snugly because they 1 Remove cover from thermostat base by gripping the serve as electrical connections between thermostat base in one hand and with the fingers of the other and subbase see fig 4 hand pull lightly at the top or bottom of the cover 4 Snap cove2. from floor strip moulding 1 4 guide hole for sighting Q ct Quarter round VY 5 a removed BN o P ELIE ef ea NT rr SI n FSS E P Figure 1 Routing thermostat wires 3 4 hole in floor of partition Hooked wire for snagging chain complete 7 CAUTION To prevent electrical shock and or equipment This typical wiring diagram shows only the terminal iden damage disconnect electrical power to system tification and wiring hookup Always refer to wiring at main fuse or circuit breaker until installation is instructions provided by equipment manufacturer for sys tem hookup To prevent personal injury and or equipment dam 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 A FAN CAUTION All wiring should be installed in accordance with local and national codes and ordinances position COOL Fixed Stage 1 Heat Adjustable Stage 2 amp Cool Anticipator Heat Anticipator STAGE 1 A STAGE 2 HEAT HEAT THERMOSTAT VvV A G GC QOD QO O SUBBASE ae og iO8 MEAT Se Gi OF amp Fan 9 i 0 Switch l yo Ox AUTO
3. 1F58 72 WHITE RODGERS Low Voltage Multi Stage Heat PumpThermostat 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 This thermostat and subbase combination is designed to control a heat pump system where automatic changeover is not required The reversing valve may be energized when the SYSTEM switch is moved to the HEAT or COOL position The subbase is equipped with EMER HEAT AUX HEAT and CHECK operation indicator lights If in doubt about whether your wiring is millivolt line or low voltage have it inspected by a qualified heating and air conditioning contractor electrician or someone familiar with basic electricity and wiring Do not exceed the specification ratings All wiring must conform to local and national electrical codes and ordinances This control is a precision instrument and should be handled carefully Rough handling or distorting compo nents could cause the control to malfunction ELECTRICAL DATA Switch Rating 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 Stage 1 heat amp cool SPDT Stage 2 heat SPST sealed mercury contacts Anticipator Rating Stage 1 heat 24 VAC fixed Stage 2 heat 0 15 to 1 2 amp adjustable Cooling 24 VAC fixe
4. d WHITE RODGERS DIVISION EMERSON ELECTRIC CO 9797 REAVIS ROAD ST LOUIS MISSOURI 63123 5398 DESCRIPTION PRECAUTIONS A 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 short out terminals on gas valve or primary control to test Short or incorrect wiring will burn out heat anticipator and could cause personal injury and or property damage A WARNING Do not use on circuits exceeding 30 volts Higher voltage will damage control and could cause shock or fire hazard Printed in U S A SPECIFICATIONS Circuit Manual Changeover Reversing valve may be energized when the SYSTEM switch is switched either the HEAT or COOL position on the subbase see wiring diagram THERMAL DATA 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 DIMENSIONS INCLUDING SUBBASE Height 3 width 5 depth 2 PART NO 37 4046F Replaces 37 4046E 9414 INSTALLATION SELECT THERMOSTAT LOCATION Proper location insures that the thermostat will provide a comfortable home temperature Observe the following general rules when selecting a location i 2 Locate thermostat about 5 ft above the floor Install thermostat on a partitioning wall not on an outside wall Never exp
5. fig 6 If additional adjustments are neces sary they may be made as follows adjust the anticipator Y2 division at a time for example from 0 6 to 0 55 1 Ifshorter heating cycles are desired set the anticipa tor to a slightly lower setting 2 Iflonger heating cycles are desired set the anticipa tor to a slightly higher setting Split jaw current meter of wire Figure 5 Current meter Move this lever to adjust heat anticipator Arrow points to the matched current rating of the primary control Figure 6 Anticipator adjustment 5 Move temperature adjustment lever to correspond to actual room temperature Then remove thermostat cover 6 Slip 2 wrench onto hex nut holding temperature adjustment lever stationary and turn hex nut counter clockwise until mercury just barely shifts to left end of tube Then replace cover and set thermostat to de sired temperature Temperature Adjustment Bimetal Lever ex 7 32 Calibration Wrench Figure 7 Calibrating thermostat 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
6. ide the reading by 10 This is the value that should be set on the adjustable anticipator Example Meter reads 6 0 amp TOsumnE Of Wire 0 6 amp anticipator setting 4 Turn power to heat pump system off then remove coil leads from the subbase and move system switch to OFF CALIBRATION ADJUSTMENT This thermostat has been carefully adjusted at the factory and should not require recalibration A few degrees difference between the indicator setting of the thermostat and actual room temperature is not consid 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 1 Move temperature adjustment lever to a setting about 5 above room temperature 2 Remove thermostat cover Slip 2 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 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 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
7. le 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 Attach thermostat wire to cord and pull wire through hole in wall so that 6 of wire protrudes ATTACH SUBBASE TO WALL Pull wires through opening near center of subbase and connect wires under terminal screws see figs 2 amp 3 Push excess wire into wall and plug up hole with fire resistant material such as fiberglass insulation to prevent drafts from affecting thermostat operation Place subbase over hole in wall for wires and mark mounting hole locations on wall Drill mounting holes 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 Check anticipator setting and adjust if required see OPERATION amp MAINTENANCE Care must be taken when securing and routing wires so they do not short to adjacent terminals or rear of thermostat Shorted wires may result in personal injury and or property damage A CAUTION 1 2 hole for gt Q thermostat wire Stout cord with 6 chain attached Approximately Baseboard 5 feet
8. n relay energized Fan runs continuously regardless of system switch position When check light is wired to a malfunction switch in the heat pump system check light will come on when the malfunction switch contacts close regardless of system switch position O Reversing valve energized if connected to the O terminal E Indicates switch position on thermostat subbase lt and system function at those switch positions t Reversing valve energized if connected to B terminal iG See fig 2 fan caution 4 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 require any adjustments The stage 2 anticipatoris adjust able and must be set to the current draw of the component it is controlling 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 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 3 With the heat pump system power on center the coil on the meter jaws and read the current draw of the stage 2 heat relay on the meter and div
9. ose thermostat to direct light from lamps sun fireplaces or any temperature radiating equip ment Avoid locations close to windows adjoining outside walls or doors that lead outside Avoid locations close to air registers or in the direct path of air from them Make sure there are no pipes or duct work in that part of the wall chosen for the thermostat location Never locate thermostat in a room that is warmer or cooler than the rest of the home such as the kitchen Avoid locations with poor air circulation such as behind doors or in alcoves 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 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 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 national electrical codes and ordinances Probe for obstructions in partition before drilling 1 2 hole in wall at selected location Take up quarter round and drill a small guide hole for sighting see fig 1 From basement drill 3 4 hole in partition floor next to guide hole In houses without basements drill 1 2 hole through ceiling and into partition from above see fig 1 Through this ho
10. r onto thermostat and set temperature 2 Carefully remove the shipping protective packing lever to desired setpoint Turn on electrical power from the mercury switches Mounting screws FAN SYSTEM MON COOL ORF HEAT EMER _ Captive terminal screws Subbase Captive terminal screws KEEP THIS AREA Hole Mounting screw CLEAR OF WIRES in wall Mounting screw Thermostat Figure 3 Thermostat subbase Cover Figure 4 Attach thermostat to subbase OPERATION amp 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 SYSTEM Emer Aux Heat Heat Compr Off Heat Relay Relay Contact COMPONENT OPERATION No heat no cool no fan no lights Heat Mode stage 1 calling Fan relay and com pressor contactor energized by thermostat Heat Mode both stages calling Fan relay com pressor contactor and auxiliary heat relay are energized Aux light on Emergency Heat Mode stage 1 calling Emergency heat relays energized Compressor locked out at thermostat Emer light on Emergency Heat Mode both stages calling Emer gency and auxiliary heat relays energized Compres sor locked out at thermostat Emer and aux lights on Cool Mode Compressor contactor and fan relay energized Fa
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