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INSTALLATION &
1F92W-51
OPERATION GUIDE
Multi-stage/Heat Pump Electronic
Digital Thermostat
WHITE-RODGERS
Operator: Save this booklet for future use!
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About Your New Thermostat . . . Your new White-Rodgers Digital Multi-stage/Heat Pump Thermostat uses the technology of a solid-state microcomputer to provide precise time/temperature control. This thermostat offers you the flexibility to design heating and cooling programs that fit your needs. Please read this manual thoroughly before operating or programming your thermostat. If you have questions, contact us at the address shown on the back cover of this manual. 2
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In This Guide . . . YOUR NEW THERMOSTAT’S OPERATING YOUR THERMOSTAT ............... 22 FEATURES .................................................. 4 PARTS OF THE THERMOSTAT PRECAUTIONS ................................................. 5 The Back Of the Thermostat Body THE THERMOSTAT’S SPECIFICATIONS ....... 6 The Display INSTALLING YOUR THERMOSTAT ................ 7 The Thermostat Buttons NEW INSTALLATION OPERATING FEATURES Select Thermostat Location PROGRAMMING YOUR Route Wires to Location THER
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YOUR NEW THERMOSTAT’S FEATURES • Five-day/two-day programming capability • Adjustable cycle times ® • Simultaneous heat and cool program storage • 9 volt Energizer alkaline battery backup • Four separate time and temperature settings • Compressor long term cycle protection per 24-hour period • Compressor short cycle protection • Up to 2 stages of heat and up to 1 stage of cool • Blower delay in the cooling cycle • Computed Energy Management Recovery • Preprogrammed temperature control (EMR) • Vi
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PRECAUTIONS If in doubt about whether your wiring is millivolt, line, WARNING ! or low voltage, have it inspected by a qualified Do not use on circuits exceeding specified heating and air conditioning contractor, electrician, voltage. Higher voltage will damage control or someone familiar with basic electricity and wiring. and could cause shock or fire hazard. Do not exceed the specification ratings. Do not short out terminals on gas valve or All wiring must conform to local and national electr
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THE THERMOSTAT’S SPECIFICATIONS THIS CONTROL IS DESIGNED FOR USE WHERE BOTH SIDES OF THE TRANSFORMER ARE PRESENT AT THE THERMOSTAT (both the hot and common sides of the 24 VAC end of the transformer.) ELECTRICAL DATA THERMAL DATA Electrical Rating: Setpoint Temperature Range: 20 to 30 VAC 50/60 Hz. 40°F to 99°F (4°C to 37°C) 0.01 to 1.5 Amps (Load per terminal) Operating Ambient Temperature Range: 2.5 Amps Maximum Total Load (All terminals 32°F to 105°F combined) Operating Humidity Range: Antici
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INSTALLING YOUR THERMOSTAT 4. Avoid locations close to windows, adjoining out- NEW INSTALLATION side walls, or doors that lead outside. WE RECOMMEND THAT YOU PROGRAM THE 5. Avoid locations close to air registers or in the THERMOSTAT WITH BATTERY INSTALLED BE- direct path of air from them. FORE ATTACHING ON SUBBASE. SEE OPERA- 6. Make sure there are no pipes or duct work in that TION SECTION FOR PROGRAMMING INSTRUC- part of the wall chosen for the thermostat loca- TIONS. tion. SELECT THERMOSTAT
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1. Probe for obstructions in partition before drilling 1 ⁄ ” hole for 1 2 ⁄2” hole in wall at selected location. Take up thermostat wire quarter round and drill a small guide hole for 3 sighting (see fig. 1). From basement, drill ⁄4” hole Stout cord with 6” chain attached Approximately in partition floor next to guide hole. In buildings 5 feet from floor Baseboard 1 without basements, drill ⁄2” hole through ceiling strip moulding 1 ⁄ ” guide hole 4 and into partition from above (see fig. 1). for
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REPLACEMENT INSTALLATION REMOVE OLD THERMOSTAT TABLE 1. WIRE IDENTIFICATION LABELS 1. Shut off electricity at the main fuse box until installation is complete. Verify power is off 1 2 3 4 5 6 7 8 with a voltmeter. G C L R O B E1 E2 2. Remove the front cover of the old thermo- G C L R O B E1 E2 stat. With wires still attached, remove 1 2 3 4 5 6 7 8 wall plate from the wall. 11 9 10 12 13 14 15 16 W1 Y1 Y2 W2 W3 S1 S2 S3 3. If the old thermostat has a wall mounting plate, remove the thermostat a
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TABLE 2. TERMINAL REFERENCE NEW THERMOSTAT OLD THERMOSTAT LABEL TERMINAL TERMINAL NUMBER DESIGNATION FUNCTION DESIGNATION (1) G Fan Output (2) C Transformer 24 VAC Common (3) L (this terminal not used) (4) R Transformer 24 VAC Hot (5) O Changeover Output (Cooling) (6) B Changeover Output (Heating) (7) E1 Emergency Heat Relay (cycles on 1st stage in Emergency Mode) (8) E2 Emergency Heat Relay (continually energized in Emergency Mode) (9) Y1 Stage 1 Cool (10) Y2 (this terminal not used)
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ATTACH SUBBASE TO WALL then tighten screws. (Leveling is for appearance only and will not affect thermostat operation.) If 1. Remove the packing material from the thermo- you are using existing mounting holes, or if holes stat. Place the fingers of one hand on the center drilled are too large and do not allow you to top and bottom portion of the thermostat. Grasp tighten subbase snugly, use plastic expansion the subbase in the other hand on the top and plugs to secure subbase. bottom center, a
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WARNING CAUTION ! ! DO NOT EXCEED MAXIMUM VOLTAGE OR To prevent electrical shock and/or equip- CURRENT RATINGS. FIRE, PERSONAL IN- ment damage, disconnect electrical power JURY, AND/OR EQUIPMENT DAMAGE at the main fuse box until installation is COULD RESULT. complete. Verify power is off with a volt- meter. Expansion plugs Connect wires under terminal screws S1 S2 S3 Mounting O W1 B E1 hole 4-pin connector E2 Y1 Mounting L Y2 C R hole G W2 W3 9-pin connector Pull wires through this opening Figu
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NOTE The following wiring diagrams show typical terminal iden- tification and wiring. For proper installation, refer to the original manufacturers' instructions. Thermostat Control Circuit THERMOSTAT O B Y1 G E2 E1 W1 W2 C R SYSTEM Changeover Emergency Heat Fan Relay Energized Relay Relay Switched In Heat Stage 2 Hot Output 24 VAC 120 VAC Emergency Heat Changeover Compressor Neutral Relay Relay Energized Contactor Constant TRANSFORMER Stage 1 In Cool Stage 1 Output Figure 4. Typical wiring diagr
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NOTE IF SAFETY CIRCUITS ARE IN ONLY ONE OF THE SYSTEMS, REMOVE THE TRANSFORMER OF THE SYSTEM WITH NO SAFETY CIRCUITS. Thermostat Control Circuit THERMOSTAT B O Y1 G W1 E1 E2 W2 C R CUT AND SYSTEM TAPE OFF! Emergency Changeover Heat Limit or Fan Relay Energized Hot Relay Safety Switched Relay In Heat Output Stage 2 Switches 120 VAC 24 VAC Limit or Emergency TRANSFORMER Changeover Compressor Heat Neutral Relay Hot Safety Energized Contactor Relay TRANSFORMER Constant Switches In Cool Stage 1 Stage
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NOTE CAUTION ! Relay contacts shown are thermostatically operated. The Polarity must be observed. If the HOT accessory relay scheme is required when safety circuits side of the second transformer is exist in both systems. jumpered to the COMMON side of the first transformer a short will be made. Thermostat Damage to equipment will occur when Control power is restored. Circuit THERMOSTAT B C O Y1 G W1 E1 E2 W2 R SYSTEM Emergency Changeover Limit or Limit or Heat Fan Relay Energized Safety Safety
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ATTACH THERMOSTAT TO SUBBASE snaps lock into place (see fig. 7). Be gentle when attaching thermostat. If the thermostat does not WE RECOMMEND THAT YOU SET OPTION seem to be attaching to the subbase easily, make SWITCHES TO DESIRED POSITION BEFORE AT- sure that the connector pins and plastic snaps are TACHING ON SUBBASE (see OPERATION). WE properly aligned, and that excess wire is pushed into ALSO RECOMMEND THAT YOU PROGRAM THE the wall. Damage to the thermostat may occur if THERMOSTAT WITH BA
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SET OPTION SWITCHES SYSTEM CONFIGURATION 1. Single Stage Compressor Heat Pump — with NOTE reversing valve energized through B or O termi- nals ANY TIME AN OPTION SWITCH IS CHANGED, ® THE 9 VOLT ENERGIZER BATTERY MUST BE REMOVED FOR A MINIMUM OF 2 MINUTES. W1 Y1 Field jumper W1 & Y1 4-pin connector Battery ON Switch #1 OFF Switch #2 OFF Switch #3 OFF 1234 Switch #4 (see step 6) 2. Two Compressor (Split) System W1 Y1 Field jumper W1 & Y1 ON Switch #1 OFF W18 Switch #2 ON Switch #3 OFF 1234 Switch
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3. Multi-stage (Fossil Fuel) System — up to 2 5. Automatic Changeover from Heat to Cool heat stages and 1 cool stage ON Switch #1 (see steps 1-4) ON Switch #1 ON Switch #2 (see steps 1-4) Switch #2 OFF Switch #3 (see step 5) Switch #3 OFF 1234 Switch #4 ON 1234 Switch #4 (see step 6) NOTE 4. Multi-stage (Electric Heat) System — up to 2 heat stages and 1 cool stage The battery maintains the stored program in the ON Switch #1 ON event of a power failure. When attached to the wall Switch #2 ON with
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HEATING SYSTEM OPERATION CHECK THERMOSTAT OPERATION When checking thermostat, option switch #4 for SYSTEM 1. Press until HEAT is displayed. (It should HEAT-OFF-COOL-AUTO automatic changeover must be in the OFF position. already be displayed.) This will allow temporary setting of heat set points above cool settings. After system checkout, reset 2. Press to adjust thermostat to 99°F. All option switch to ON position if automatic changeover stages of the heating system should come on is desired
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COOLING SYSTEM OPERATION pass Option to temporarily override the com- pressor lockout feature during testing). CAUTION ! 3. To program the thermostat, see PROGRAM- MING YOUR THERMOSTAT. To prevent compressor and/or property damage, if power to the compressor has After heating and cooling system have been checked been off or interrupted for more than 1 and are running properly, determine if automatic hour and the outdoor temperature is be- changeover is desired. When option switch #4 is in low 5
