White Rodgers 1F83-277 User's Manual
Contents
1. any time during testing your system does not operate properly contact a qualified serviceperson Fan Operation If your system does not have a G terminal connection skip to Heating System 1 Turn on power to system 2 Move fan switch to ON position The blower should begin to operate 3 Move fan switch to AUTO position The blower should stop immediately A CAUTION Do not allow the compressor to run unless the com pressor oil heaters have been operational for 6 hours and the system has not been operational for at least 5 minutes Heating System 1 Press SYSTEM button to select the Flame icon Q If the auxiliary heating system has a standing pilot be sure to light it 2 Press to adjust thermostat setting to 1 above room temperature The heat pump system should begin to operate The display should show STG1 However if the set point temperature display is flashing the compressor lockout feature is operating see Configuration menu item 5 3 Adjust temperature setting to 3 above room temperature If your system configuration is set at MS2 HP2 or HP1 the auxiliary heat system should begin to operate and the display should show STG 1 2 4 Press to adjust the thermostat below room tempera ture The heating system should stop operating Emergency System EMER bypasses the Heat Pump to use the heat source wired to terminal E on the thermostat EMER is typically used when compressor operation is2. fire resistant material such as fiberglass insulation to prevent drafts from affecting thermostat operation Battery Location 2 AA alkaline batteries are included in the thermostat at the factory with a battery tag to prevent power drainage You must remove the battery tag to engage the batteries If BATT is displayed the batteries are low and should be replaced with fresh AA Energizer alkaline batteries To replace batteries set system to OFF install the batteries along the top of the base see Fig 1 The batteries must be installed with the positive end to the left SYSTEM MONITOR SWITCH THERMOSTAT SYSTEM Emergency or 1st Aux Stage TRANSFORMER Class II Current Limited Figure 2 Typical wiring diagram for single transformer heat pump systems NOTE If safety circuits are in only one of the systems remove the transformer of the system with NO safety circuits CUT AND TAPE OFF Reversing Valve Energized in Heat Off Emergency Mode Reversing Valve Energized in Cool Mode 2nd Stage Compressor Compressor Contactor HOT 120 VAC NEUTRAL SYSTEM MONITOR SWITCH Limit or Safety Switches Emergency or 1st Aux Stage Relay Relay Stage 2 Hot 120 VAC Neutral TRANSFORMER Class II Current Limited Two COMMONS MUST BE JUMPERED TOGETHER 2 Figure 3 Typical wiring diagram for two transformer heat pump
3. icon and OFF keypad not locked out default indicating in the time digits to the lock icon and ON keypad locked out When the keypad lockout function is enabled ON and the SYSTEM key is pressed again the display will indicate the number 0 default still disabled in the time digits The and are used to set the combina tion number from 0 to 999 0 will not be a valid combination If a combination of 0 is selected and the system key is pressed the menu will be exited and keypad lockout will not be evoked If 1 to 999 is selected and the SYSTEM key is pressed again the combination is locked into non volatile memory and the menu is exited The lock icon to designate keypad locked with a valid combination will display when the menu is exited The system key will operate for 10 seconds after the menu mode is exited to allow the user to change the mode from OFF to the desired system mode ELECTRICAL DATA Electrical Rating 20 to 30 VAC 50 60 Hz or DC 0 05 to 1 5 Amps Load per terminal 2 5 Amps Maximum Total Load All terminals combined The system mode is selected by pressing the SYSTEM button Icons on the bottom right corner of the display will indicate the mode COOL 4 AUTO 2 HEAT 2 EMER or OFF In any mode except OFF the setpoint temperature will be shown on the right side of the display In OFF this area will be blank The current temperature will be displayed on the left side of the display To operate
4. properly in the AUTO mode the heat setpoint temperature cannot be the same as or higher than the cool setpoint temperature The heat setpoint must be at least 1 lower than the cool setpoint Automatic System Changeover When the thermostat is in the AUTO mode both the Flame and Snowflake icons are displayed The thermostat will call for heat or cool depending on the room temperature The setpoint temperature displayed will be that of the last mode called If the last system cycle was heat the HEAT setpoint will be displayed Ifthe room temperature raises above the HEAT setpoint and the COOL setpoint and a call for cool is required the temperature displayed will change to be the COOL setpoint CONFIGURATION MENU While the keypad is locked out a simultaneous press of the temperature and will enter the menu item from any mode instead of only OFF mode When the menu is entered with the keypad lockout feature enabled the first menu item displayed is the combination code 0 The or keys are used to set the combination unlock number from 0 to 999 Ifthe unlock number matches exactly with the combination lock number stored in memory when the SYSTEM key is pressed the keypad is unlocked and the lock icon is removed If the unlock number does not match when the SYSTEM key is pressed menu is exited and the keypad remains disabled To reset the combination code and unlock the keypad if the code is forgotten see troubleshooting se
5. system or service person can instruct you on how to test the Heat Cool system for correct operation If the system operates correctly replace the thermostat Furnace Air Conditioner Cycles Too Fast or Too Slow narrow or wide temperature swing The location of the thermostat and or the size of the Heating System may be influencing the cycle rate Digital thermostats normally provide precise temperature control and may cycle faster than some older mechanical models A faster cycle rate means the unit turns on and off more frequently but runs for a shorter time so there is no increase in energy use If you would like to increase the cycle time choose SL for slow cycle in the menu step 4 If an acceptable cycle rate is not achieved as received or by choosing slow cycle contact a local service person for additional suggestions Symptom Possible Cause TROUBLESHOOTING Corrective Action Thermostat Setting amp Thermostat Thermometer Disagree 1 Thermostat thermometer setting requires adjustment The thermometer can be adjusted 3 degrees See Temperature Display Adjustment in the Configuration Menu section Blank Display and or Keypad Not Responding 1 Voltage spike or static discharge Use the Reset Operation at top of previous page Heat Setpoint will not Respond to the Temperature Up Key 1 The desired setpoint conflicts with the setpoint of the COOL mode Change system
6. thermostat cover and the base To remove the cover pull it straight out from the base To replace the cover line up the cover with the base and press until the cover snaps onto the base The Thermostat Buttons and Switches O Raises temperature setting Lowers temperature setting FAN switch ON AUTO SYSTEM button COOL AUTO HEAT EMER OFF The Display OOO Flame icon is displayed when the system is in HEAT mode Snowflake icon is displayed when the system is in COOL mode Flame icon and Snowflake icon x are displayed simultaneously when thermostat is in AUTO mode Displays BATT when the 2 AA batteries are low and should be replaced Only BATT and LO are displayed when batteries are low with no system power Displays current temperature or LO when batteries are low Displays currently programmed set temperature this is blank when SYSTEM is OFF Displays FLTR when the system has run for the programmed filter time period as a reminder to change or clean your filter OGG O Display when in keypad lockout mode The configuration menu allows you to set certain thermostat operating characteristics to your system or personal require ments Set SYSTEM button to OFF then simultaneously press and to enter configuration menu The display will show the first item in the configuration menu The configuration menu table summarizes the configuration options An explanation of each
7. WHITE RODGERS 1F 83 277 Heating amp Air Conditioning Non programmable Auto Changeover Multi Stage Heat Pump Thermostat 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 YOUR THERMOSTAT REPLACES Description Heat Pump No Aux or Emergency Heat Yes Heat Pump with Aux or Emergency Heat Yes Standard Heat amp Cooling Systems Yes Two Stage Heat amp Two Stage Cool Yes Standard Heat Only Systems Yes Millivolt Heat Only Systems Floor or Wall Furnaces Yes Standard Central Air Conditioning Yes Gas or Oil Heat Yes Electric Furnace Yes Hydronic Hot Water Zone Heat 2 Wires Yes Hydronic Hot Water Zone Heat 3 Wires No A CAUTION To prevent electrical shock and or equipment dam age disconnect electric power to system at main fuse or circuit breaker box until installation is complete Before removing wires from old thermostat s switching sub base label each wire with the terminal designation it was removed from 1 Shut off electricity at the main fuse box until installation is complete Ensure that electrical power is disconnected 2 Remove Old Thermostat A standard heat cool thermostat consists of three basic parts a The cover which may be either a snap on or hinge t
8. at requires replacement the setpoint above room temperature Within a few seconds the thermostat should make a soft click sound This sound usually indicates the thermostat is operating properly If the thermostat does not click try the reset operation listed above If the thermostat does not click after being reset contact your heating and cooling service person or place of purchase for a replacement If the thermostat clicks contact the furnace manufacturer or a service person to verify the heating is operating correctly No Cool 1 System Switch not set to COOL Set System Switch to COOL and lower setpoint 2 3 Loose connection to thermostat or system Cooling system requires service or thermostat requires replacement below room temperature Verify thermostat and system wires are securely attached Same procedure as diagnostic for No Heat condi tion except set the thermostat to COOL and lower the setpoint below the room temperature There may be up to a five minute delay before the thermostat clicks in Cooling Heat Cool or Fan Runs Constantly Possible short in wiring Possible short in thermostat Possible short in heat cool fan system Fan Switch set to Fan On Check each wire connection to verify they are not shorted or touching together No bare wire should stick out from under terminal screws Try resetting the thermostat as described above If the condition persists the manufacturer of your
9. ction SPECIFICATIONS THERMAL DATA Setpoint Temperature Range 45 F to 90 F 7 C to 32 C Operating Ambient Temperature Range 32 F to 105 F Operating Humidity Range 0 to 90 RH non condensing Shipping Temperature Range 40 F to 150 F OPERATION Second Stage Time Delay Your thermostat is designed to determine the optimum time to activate the second stage Simply raising the temperature in heating or lowering it in cooling will not always force the thermostat to bring the second stage on quickly There is a time delay from 0 30 minutes depending on the performance of the first stage of the system EXAMPLE For the last 2 hours the thermostat is set on 70 and the room temperature is 70 with the equipment using only the first stage of heat Since the equipment is keeping the tempera ture within 1 degree of setpoint the thermostat will delay second stage for a longer time if you manually raise the temperature or if the room temperature quickly changes Once the second stage comes on it will come on sooner the next time there is a difference between the setpoint and the room temperature The net effect of the staging program is that when the first stage is capable of making temperature the second stage will delay longer When the thermostat calculates that first stage cannot make temperature in a reasonable time the second stage will come on sooner This built in function automatically optimizes the use of additional s
10. d If a cell becomes damaged the unit should be discarded Mercury must not be discarded in household trash When the unit this product is replacing is to be discarded place in a suitable container and return to White Rodgers at 2895 Harrison Street Batesville AR 72501 for proper disposal PART NO 37 6509A 0405 MOUNTING AND WIRING Do not use on circuits exceeding specified voltage Higher voltage will damage control and could cause shock or fire hazard Do not short out terminals on gas valve or primary control to test Short or incorrect wiring will damage thermostat and could cause personal injury and or property damage Thermostat installation and all components of the system shall conform to Class II circuits per the NEC code Electric Gas Switch Fan Option The ELEC GAS switch is factory set to the ELEC position In this position the thermostat will power the circulator fan on a call for heat Electric heat systems require the switch to be in the ELEC position If your system does not require that the thermostat power the circulator fan this switch should be set to the GAS position Typically gas and oil heating systems do not require the thermostat to power the circulator fan during a call for heat If your heat is gas or oil the switch should be set to the GAS position When the thermostat is configured for Heat Pump the thermo stat will always power the circulator fan on a call for heat in the HEAT m
11. ent run time 7 System 0 F 4 LO to 4 HI Selects Temperature Display Adjustment 4 LO to 4 HI Room Temperature 8 System F C For C selection 9 System LR LR 62 to LR89 Selects Limited HEAT range 90 10 System LR LR 46 to LR 82 Selects Limited COOL range 45 11 System CA CA Feature Not Available OFF ON 12 System OFF ON Selects Keypad Lockout 13 0 001 to 999 Selects Keypad lockout combination number Press System to set code 14 System Returns to the OFF position 4 Select Backlight Display The display backlight improves 7 Select Temperature Display Adjustment 4 LO to 4 HI display contrast in low lighting conditions When the C Allows you to adjust the room temperature display up to 4 terminal is powered selecting backlight CdL ON will keep higher or lower Your thermostat was accurately calibrated the light on continuously Select backlight OFF will keep at the factory but you have the option to change the display the light on momentarily after any key is pressed When the temperature to match your previous thermostat The cur C terminal is not powered the light will be on momentarily rent or adjusted room temperature will be displayed on the after any key is pressed no matter the backlight is selected left side of the display ON or OFF 8 Select F or C Readout Changes the display readout 5 Select Fast Second Stage ON or OFF In the run mode to Centigrade or Fahrenheit as required if the setpoint temperature
12. is manually raised by 3 F 2 C 9 Limited Heat Range This feature provides a maximum or more above the actual temperature with the and the setpoint temperature for heat The default setting is 90 F It fast second stage feature is enabled FA ON the second can be changed between 62 F and 89 F by pressing the stage will energize immediately With FA OFF second temperature up or temperature down key stage will not energize until the setpoint temperature is 1 F oo or more above actual temperature for more than ten min 10 Limited Cool Range This feature provides a minimum utes setpoint temperature for cool The default setting is 45 F It can be changed between 46 F and 82 F by pressing the 6 Select filter replacement run time The thermostat will display FLTR after a set time of operation This is a remind er to change or clean your air filter This time can be set from 0 to 1950 hours in 50 hour increments A selection of 000 will cancel this feature When FLTR is displayed you can clear it by pressing HOLD and RUN at the same time This resets the timer and starts counting the hours until the next filter change Contact your system manufacturer for a specific replacement maintenance interval temperature up or temperature down key 11 This feature not available 12 amp 13 Keypad Lockout This menu selection will display lock icon The and are used to toggle the function and display the lock
13. mode to COOL Raise the Cool setpoint Return to HEAT mode and set desired temperature Cool Setpoint will not Respond to the Temperature Down Key 1 The desired setpoint conflicts with the setpoint of the HEAT mode Change system mode to HEAT Lower the Heat setpoint Return to COOL mode and set desired temperature Forgot Keypad Lockout Code CAUTION This resets the thermostat to factory default settings of the configuration menu After performing this reset the thermostat will require configuration again Be sure that you know the required configuration settings before resetting With the thermostat in any mode press and at the same time to enter the configuration menu at the point where the lockout code is to be entered Press and and SYSTEM button at the same time to reset the lockout code unlock the keypad and reset all configuration menu settings Why won t my 2nd or 3rd stage come on Your thermostat is designed to determine the optimum time to activate the second stage Simply raising the temperature in heating or lowering it in cooling will not always force the thermostat to bring the second stage on quickly There is a time delay from 0 30 minutes depending on the performance of the first stage of the system The Emerson logo is a trademark and a service mark of Emerson Electric Co WHITE RODGERS Controlling Indoor Comfort Worldwide Since 1937 St Louis Missouri Markham O
14. not desired or you prefer back up heat only 1 Press SYSTEM button to select EMER EMER will flash on the display 2 Press to adjust thermostat setting above room temperature The Aux heating system will begin to operate The display will show STG1 flashing EMER and flame icon to indicate that the Aux system is operating 3 Adjust temperature setting to 3 above room temperature The auxiliary heat system should begin to operate and the display should show STG 1 2 4 Press to adjust the thermostat below room tempera ture The Aux heating system should stop operating To prevent compressor and or property damage if the outdoor temperature is below 50 F DO NOT operate the cooling system Cooling System Press SYSTEM button to select the Snowflake icon Press to adjust thermostat setting below room temperature The blower should come on immediately on high speed followed by cold air circulation The display should show STG1 3 Adjust temperature setting to 3 below room temperature The second stage cooling should begin to operate and the display should show STG 1 2 4 Press to adjust the temperature setting above room temperature The cooling system should stop operating N Before you begin programming 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
15. ntario 314 577 1300 905 201 4701 www white rodgers com
16. ode The ELEC GAS switch must be set to match the type of Auxiliary heat your system uses for proper operation in the EMERgency mode All wiring diagrams are for typical systems only Refer to equipment manufacturers instructions for specific system wir ing information Reversing Valve Energized in Cool Mode Reversing Valve Energized in Heat Off Emergency Mode Take care when securing and routing wires so they do not short to adjacent terminals or rear of thermostat Personal injury and or property damage may occur Attach Thermostat Base to Wall 1 Remove the packing material from the thermostat Gently pull the cover straight off the base Forcing or prying on the thermostat will cause damage to the unit 2 Connect wires beneath terminal screws on base using appropriate wiring schematic see figs 2 through 4 3 Place base over hole in wall and mark mounting hole locations on wall using base as a template 4 Move base out of the way Drill mounting holes 5 Fasten base loosely to wall as shown in fig 1 using two mounting screws Place a level against bottom of base adjust until level and then tighten screws Leveling is for appearance only and will not affect thermostat 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 6 Push excess wire into wall and plug hole with a
17. option follows Press SYSTEM to change to the next menu item To exit the menu and return to the program operation press RUN If no keys are pressed within fifteen minutes the thermostat will revert to normal operation 1 Single Stage Multi stage or Heat Pump System Configuration This control can be configured for Heat Pump or two stage heat two stage cool multi stage opera tion The display indicates MS 2 default for multi stage mode in the display The Multi stage configuration can be toggled to S1 HP2 or HP1 by pressing the Tempera ture Up or Temperature Down key In Multi stage configu ration system button will not have EMERgency mode OPERATION bo TM aval rit ETA p BATT Figure 6 Thermostat display buttons and switches EMER is displayed flashing when the system is in EMER mode Indicates a fault in the heating cooling system It does not indicate a fault in the thermostat Display when limited range is activated Stage1 amp 2 indicators The thermostat shall indicate when the first and second stage is energized except in emergency mode The icon is STG 1 for the first stage energized The icons for the first and second stage energized are STG1 2 located in the upper right side of the display CONFIGURATION MENU 2 Fast or Slow Cycle Selection The factory default setting is fast cycle which cycles 1st stage at approximately 1 2 F and 2nd stage 0 75 F If you prefer sl
18. ow cycle press the temperature key to change to SL The 1st stage and 2nd stage would be 1 5 F and 1 2 F respectively 3 Select Compressor Lockout CL OFF or ON Selecting CL ON will cause the thermostat to wait 5 minutes before turning on the compressor if the heating and cooling system loses power It will also wait 5 minutes minimum between cooling and heating cycles This is intended to help protect the compressor from short cycling Some newer compres sors already have a time delay built in and do not require this feature Your compressor manufacturer can tell you if the lockout feature is already present in their system When the thermostat compressor time delay occurs it will flash the setpoint for about five minutes CONFIGURATION MENU Press the System button until OFF is displayed then press the G and simultaneously INSTALLER CONFIGURATION MENU Press Displayed Press or Step Button s Factory Default to select Comments 1 System MS 2 SS1 HP2 HP1 Selects Single stage Multi stage or Heat Pump Single stage or 2 stage System Configuration 2 System FA SL Selects Fast or Slow Cycle Selection 3 System CL CL Selects Compressor Lockout CL OFF or ON OFF ON 4 System CDL CDL Selects Backlight Display ON OFF 5 System FA FA Selects Fast Second Stage ON or OFF ON OFF 6 System 0 FLTR 50 1950 increments of 50 Selects filter replacem
19. pump system types a 75VA Class II transformer After disconnecting one trans HEAT PUMP TYPE 1 Single stage compressor system gas former the two commons must be jumpered together or electric backup Use the terminal output information below to help you wire the This thermostat is designed to operate a single transformer thermostat properly for your multi stage system After wiring system If you have a two transformer system cut and tape off see CONFIGURATION section for proper thermostat configu ration THERMOSTAT TERMINALS HEAT PUMP SYSTEM L C R W2 E W1 Y2 Y1 G O B Heat Malfunction 24Volt 24 Volt Heat Mode Heat mode No Heatand Blower Fan Energized Energized Energized Pump 1 Light Common Hot 3rd stage 2nd stage Output Coolmode on call for Heat in Cool in Heat __ Emergency or 1ststage and Cool Mode OFF Heat mode Emergency 2nd _ compressor Set GAS ELEC switch Emergency Pump 2 2nd stage Mode stage for Emergency mode mode 1ststage compressor THERMOSTAT SYSTEM Compressor Contactor Reversing Reversing Stage 2 Stage 1 Valve Valve Energized in Energized in Cool Mode Heat Mode Compressor Heat Off Emergency Contactor Stage 1 Neutral TRANSFORMER Class II Current Limited Relay Stage 2 Figure 5 Typical wiring diagram for single transformer multi stage systems Multi Stage Terminal Outputs Refer to equipment manufacturers inst
20. ructions for specific system wiring information You can configure the thermostat for use with either multi stage electric heat systems or multi stage gas systems When con figured for electric heat the G terminal blower fan will be energized on a call for heat This thermostat is designed to operate a single transformer system If you have a two transformer system cut and tape off one transformer If transformer safety circuits are in only one of the systems remove the transformer of the system with NO safety circuits If required replace remaining transformer with a 75VA Class II transformer After disconnecting one trans former the two commons must be jumpered together Use the terminal output information below to help you wire the thermostat properly for your multi stage system After wiring see CONFIGURATION section for proper thermostat configu ration THERMOSTAT TERMINALS MULTI STAGE SYSTEM L C R W2 E W1 Y2 Y1 G O B Multi stage Malfunction 24Volt 24 Volt Heat Mode Heat mode Cool Mode Cool Mode Blower Fan Energized Energized Energized Light Common Hot 2ndstage 1ststage 2ndstage 1st stage on call for Cool and in Cool in Heat Off Heat if configured Mode Emergency to Electric Heat Modes CHECK THERMOSTAT OPERATION To prevent static discharge problems touch side of thermostat to release static build up before touching any keys If at
21. systems with NO safety circuits WIRING DIAGRAMS 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 O eee SYSTEM Limit or Safety Reversing Valve Emergency SYSTEM Switches Reversing ada or 1st Aux MONITOR NEUTRAL Valve Energized in Stage Relay SWITCH Auxiliary Energized in Heat Off ACCESSORY Heating RELAY N O CONTACT Transformer The accessory relay scheme Pe eee is required when safety urrent Limited circuits exist in both systems Relay Stage 2 Cool Mode Emergency Compressor Mode Contactor COMMON A Nile D N TWO COMMONS MUST Limit or Limit or BE JUMPERED TOGETHER Safety Safety Switches Switches HOT COMMON NEUTRAL Heat Pump Transformer Class II Current Limited Figure 4 Typical wiring diagram for two transformer heat pump systems with safety circuits in BOTH systems Heat Pump Terminal Outputs Refer to equipment manufacturers instructions for specific one transformer If transformer safety circuits are in only one of system wiring information the systems remove the transformer of the system with NO You can configure the thermostat for use with the following safety circuits If required replace remaining transformer with heat
22. tages of heat or cool TROUBLESHOOTING Reset Operation If a voltage spike or static discharge blanks out the display or causes erratic thermostat operation you can reset the thermostat by removing the wires from terminals R and C and removing batteries for 2 minutes After resetting the thermo stat replace the wires and batteries If the thermostat has been reset and still does not function correctly contact your heating cooling service person or place of purchase Symptom Possible Cause Corrective Action No Heat No Cool No Fan common problems 1 2 Blown fuse or tripped circuit breaker Furnace power switch to OFF Replace fuse or reset breaker Turn switch to ON 3 Furnace blower compartment door or Replace door panel in proper position to engage panel loose or not properly installed safety interlock or door switch No Heat 1 Pilot light not lit Re light pilot 2 System Switch not set to HEAT Set System Switch to HEAT and raise setpoint above room temperature 3 Loose connection to thermostat or Verify thermostat and system wires are securely system attached 4 Furnace Lock Out Condition Heat Many furnaces have safety devices that shut down may also be intermittent when a lock out condition occurs If the heat works intermittently contact the furnace manufacturer or local service person for assistance 5 Heating system requires service or Diagnostic Set System Switch to HEAT and raise thermost
23. ype b The base which is removed by loosening all captive screws c The switching subbase which is removed by unscrewing the mounting screws that hold it on the wall or adaptor plate 3 Remove the front cover of the old thermostat With wires still attached remove wall plate from the wall If the old thermostat has a wall mounting plate remove the thermostat and the wall mounting plate as an assembly 4 Identify each wire attached to the old thermostat 5 Disconnect the wires from the old thermostat one at a time DO NOT LET WIRES FALL BACK INTO THE WALL 6 Install new thermostat using the following procedures amp White Rodgers is a division ERSON of Emerson Electric Co Technologies www white rodgers com EM PREPARATIONS Assemble tools required as shown below gt Sx _ FLAT BLADE SCREWDRIVER WIRE CUTTER STRIPPER HAND OR POWER DRILL WITH 3 16 INCH are ssc SSS SPIRIT LEVEL OR PLUMB BOB AND LINE OPTIONAL THERMOSTAT DOES NOT NEED TO BE LEVEL TO WORK PROPERLY REMOVING OLD THERMOSTAT Mounting Mounting Hole Hole Elec Gas Switch Figure 1 Thermostat base ATTENTION This product does not contain mercury How ever this product may replace a unit which contains mercury Do not open mercury cells If a cell becomes damaged do not touch any spilled mercury Wearing non absorbent gloves clean up the spilled mercury and place into a container which can be seale
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