White Rodgers 1F94-80 Thermostat User Manual
Contents
1. OF THE SYSTEMS REMOVE THE TRANSFORMER OF THE SYSTEM WITH NO SAFETY CIRCUITS b d o o o o ma Malfunction T Thermostat i Control 1 Circuit E A l _ A ieee Flat en cd l THERMOSTAT 0 0 0 O O O G oe ean J SYSTEM ore Se ee See te es ch eats in ae td oa ce gedit no ty ate Sy ee A a l l Changeover Compressor Emergency mes CUT AND i Energized ene Damper Relay Limit or TAPE OFF Motor Constant Switch Safety i In Heat Stage 2 i Output Switches l Hot i E J 120vAC 24vac Changeover Compressor Fan Heat Emergeney Heat TRANSFORMER Limit or soak a Energized l elay Rela Heia g Contactor Relay Relay switched 7 a Hot Safety 1 In Cool Stage 1 Stage 1 1 Output tage Switches TRANSFORMER i l l l 24vAC 120vAC l oa o e i o o J Notai b ogg ig I l HEAT PUMP SYSTEM i AUXILIARY HEATING SYSTEM DEPENDING ON SYSTEM REQUIREMENTS REPLACE WITH A 75VA TRANS UMPEREDTOCETHE FORMER IF NEEDED BE JUMPERED TOGETHER Figure 5 Typical wiring diagram for two transformer system with NO safety circuits NOTE A CAUTION Relay contacts shown are thermostatically operated The Polarity must be observed If the HOT side of the accessory relay scheme is required2. THE 24vAC TRANSFORMER TO BE PRESENT TO THE THERMOSTAT FOR OPERA TION TABLE 1 TERMINAL REFERENCE NEW THERMOSTAT OLD THERMOSTAT LABEL TERMINAL TERMINAL NUMBER DESIGNATION FUNCTION DESIGNATION 1 G Fan Output 2 C Transformer 24VAC Common 3 L Malfunction Light 4 R Transformer 24VAC Hot 5 O Changeover Output cool 6 B Changeover Output hot 7 E1 Emergency Heat Relay cycles on first stage in emergency mode 8 E2 Emergency Heat Relay continually energized in emergency mode 9 Y1 Stage 1 Cool 10 Y2 Stage 2 Cool 11 W1 Stage 1 Heat compressor 12 W2 Stage 2 Heat compressor 13 Al Damper Motor Connect wires beneath terminal screws on sub base using appropriate wiring schematic see figs 3 through 6 Place subbase over hole in wall and mark mounting hole locations on wall using subbase as a template Move subbase out of the way Drill mounting holes Fasten subbase loosely to wall as shown in fig 3 using two mounting screws Place a level against bottom of subbase 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 subbase snugly use plastic expansion plugs to secure subbase Push excess wire into wall and plug hole with a fire resistant material such as fiberglass insulation to prevent dr
3. proper operation 2 which has been subjected by persons other than Seller to improper handling operation mainte nance repair or alteration or 3 which has been subjected to misuse negligence or accident This warranty extends only to persons or organizations who purchase the Products for resale THE FOREGOING CONSTI TUTES SELLER S SOLE RESPONSIBILITY UNDER THIS WAR RANTY AND PURCHASER S EXCLUSIVE REMEDY FOR THE BREACH THEREOF EXCEPT AS OTHERWISE EXPRESSLY SET FORTH IN THIS AGREEMENT THERE ARE NO OTHER WARRANTIES EXPRESS OR IMPLIED WHETHER OF MER CHANTABILITY FITNESS FOR A PARTICULAR PURPOSE OR OTHERWISE SELLER SHALL NOT BE LIABLE FOR ANY SPE CIAL INDIRECT INCIDENTAL OR CONSEQUENTIAL DAM AGES OF ANY CHARACTER IN CONNECTION WITH THE SALE RESALE OR USE OF THE PRODUCTS Complete warranty information and instructions for replacing returning warranty products can be found in the White Rodgers Product Catalog or by telephoning or writing to White Rodgers Division Emerson Electric Co 9797 Reavis Road St Louis Missouri 63123 5398 314 577 1300 WARRANTY INFORMATION FOR CONSUMERS When you purchase a White Rodgers Division product it is typi cally for replacement of a device which has failed on existing residential or commercial equipment or a component of new equipment purchased for modernization While our warranty does not extend to you your contractor or dealer is protected by a one year product war
4. tempo mostat rarily override the compressor lockout feature during testing COOLING SYSTEM LOCKOUT BYPASS OPTION FOR QUALIFIED SERVICE TECHNICIANS USE A CAUTION ONLY OPERATORS SHOULD NOT USE THIS FEATURE DUE TO POSSIBILITY OF EQUIPMENT 7 oprevent compressor andor property Gamage OR PROPERTY DAMAGE OR PERSONAL INJURY if power to the compressor has been off or interrupted for more than 1 hour and the outdoor temperature is below 50 F DO NOT operate the system for at least the amount of time the com pressor was off This will allow the compressor heaters to warm the compressor oils to avoid damage due to slugging 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 Press until COOL is displayed Press w to adjust thermostat to 40 F All stages of the cooling system should begin to operate within approximately five minutes However if the PUMP LED is flashing the compressor lockout feature is DO NOT USE THE LOCKOUT BYPASS OPTION operating see Lockout Bypass Option to tempo UNLESS THE COMPRESSOR OIL HEATERS HAVE rarily override the compressor lockout feature during BEEN OPERATIONAL FOR 6 HOURS AND THE testing SYSTEM HAS NOT BEEN OPERATIONAL FOR AT LEAST 5 MINUTES while testing thermostat operati
5. THERMOSTAT TO SUBBASE WE RECOMMEND THAT YOU SET OPTION SWITCHES TO DESIRED POSITION BEFORE ATTACHING ON SUBBASE see OPERATION WE ALSO RECOM MEND THAT YOU PROGRAM THE THERMOSTAT WITH BATTERY INSTALLED BEFORE ATTACHING ON SUBBASE see OPERATION GUIDE for program ming instructions POWER TO THERMOSTAT MUST BE OFF BEFORE ATTACHING THERMOSTAT TO WALL FAILURE TO TURN OFF POWER BEFORE ATTACHING THERMO STAT MAY CAUSE EQUIPMENT DAMAGE DUE TO RAPID COMPRESSOR CYCLING To attach thermostat to subbase line up the plastic snap guides at the top of the thermostat and the 4 connector pins on the thermostat with the connectors near the top right section of the subbase when viewed from the front Gently pivot the thermostat down until the 9 pin connec OPERATION SYSTEM CONFIGURATION SET OPTION SWITCHES 1 Single Stage Compressor Heat Pump System with reversing valve energized through B or O termi nals Field jumper W1 amp Y1 ON Switch 1 OFF Switch 2 see step 3 Switch 3 see step 4 12 3 4 Switch 4 see step 5 2 Two Compressor Split or Two Speed Compres sor System MO 3 Economizer Enabled for 1st Stage Cooling use with fresh air damper to conserve energy by bringing temperature down more slowly on 12 93 4 4 Energy Management Recovery Option Enabled ny 123 4 Field jumper W1 amp Y1 Field jumper W2 amp Y2 Switch 1 ON Switch 2 see
6. WHITE RODGERS 1F94 80 Multi stage Electronic Digital 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 This wall mounted low voltage thermostat maintains room temperature by controlling the operation of multi stage systems Use this thermostat for applications re quiring up to two stages of heat and or cool Indicator lights show the system status The user will program two time temperature settings per 24 hour period The ther mostat stores programs for seven independent days The thermostat will store both heating and cooling programs simultaneously A 9 volt Energizer battery will maintain the stored program for approximately one week if incom ing power should fail If power failure is extensive and the program is lost after power restoration the thermostat will automatically maintain a factory preprogrammed heat ing temperature of 64 F or acooling temperature of 82 F 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 CONTENTS Description Precautions Specifications Installation New Installation Select Thermostat Locati
7. afts from affecting thermostat operation Mounting hole Expansion eg ee plugs Connect wires under terminal screws Pull wires through this opening Figure 3 Subbase 7 WARNING DO NOT EXCEED MAXIMUM VOLTAGE OR CURRENT RATINGS FIRE PERSONAL IN JURY AND OR EQUIPMENT DAMAGE COULD A CAUTION RESULT To prevent electrical shock and or equipment damage disconnect electrical power at the main fuse box until installation is complete Verify power is off with a voltmeter The following wiring diagram shows typical terminal iden tification and wiring For proper installation refer to the original manufacturers instructions Malfunction Light Thermostat Control Circuit THERMOSTAT Se gaa Changeover Compressor Emergency Heat Damper aroem a Energized Contactor c on mae t Relay Motor Switch In Heat Stage 2 Output Stage 1 _Hot o e 24vAC i 120vAC Changeover Compressor Fan Emergency Heat Neutral elay Rela Energized Contactor Relay Switched y TRANSFORMER In Cool Stage 1 Output Stage 2 d d d d d Figure 4 Typical wiring diagram for single transformer systems IF SAFETY CIRCUITS ARE IN ONLY ONE
8. dity Range 0 to 90 RH non condensing Shipping Temperature Range 40 F to 150 F ACCESSORIES Remote Sense Kit W R Part No F145 1049 Thermostat Guard W R Part No F29 0198 clear or F29 0238 opaque ROUTE WIRES TO LOCATION All wiring must conform with local and national electrical codes and ordinances 1 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 buildings without basements drill 1 2 hole through ceiling and into partition from above see fig 1 2 Through this hole drop a light chain or 6 chain attached to astrong cord nag cord in basement with hooked wire In buildings without basements drop cord through hole in ceiling and down partitioning snag cord at the thermostat location 3 Attach thermostat wires to cord and pull wires through hole in wall so that 6 of wire protrudes ie 1 2 hole for thermostat wire Stout cord with 6 chain attached Approximately Baseboard 5 feet from floor strip moulding 1 4 guide hole for sighting 3 4 hole in floor of partition Hooked wire for snagging chain Figure 1 Routing thermostat wires REPLACEMENT INSTALLATION REMOVE OLD THERMOSTAT Shut off electricity at the main fuse box until installa tion is complete Verify pow
9. er is off with a voltmeter 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 Use the Cross Reference Guide to find the thermostat type you are replacing Identify each wire attached to the old thermostat using the labels enclosed with the new thermo stat Record the identification of the wire on the corresponding blank in Table 2 Disconnect the wires from old thermostat one at a time Pull at least 6 inches of wire out of the wall DO NOT LET WIRES FALL BACK INTO THE WALL Install new thermostat using the following proce dures ATTACH SUBBASE TO WALL Remove the packing material from the thermostat Place the fingers of one hand on the center top and bottom portion of the thermostat Grasp the subbase in the other hand on the top and bottom center and gently pull straight out see fig 2 The thermostat has pin and socket connectors Forcing or prying on the thermostat will cause damage to the unit PULL STRAIGHT OUT Figure 2 Removing thermostat from subbase TABLE 1 WIRE IDENTIFICATION LABELS 1 2 3 4 5 6 7 8 G C L R O B E1 E2 G C L R O B E1 E2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Y1 Y2 w1 W2 A1 S1 S2 S3 Y1 Y2 wi W2 A1 S1 S2 S3 9 10 11 12 13 14 15 16 THIS THERMOSTAT REQUIRES BOTH THE HOT AND COMMON SIDES OF
10. o 30v AC 50 60 Hz 0 01 to 1 5 Amps Load per terminal 2 5 Amps Maximum Total Load All terminals combined Anticipation Heating 4 to 40 Cooling 4 to 40 Reference Values Auxiliary 4 to 40 STAGING DATA Up to two heating stages Up to two cooling stages INSTALLATION NEW INSTALLATION YOU SHOULD PROGRAM THE THERMOSTAT WITH BATTERY INSTALLED BEFORE ATTACHING ON SUBBASE SEE OPERATION GUIDE FOR PROGRAM MING INSTRUCTIONS SELECT THERMOSTAT LOCATION Proper location insures that the thermostat will provide a comfortable building temperature Observe the following general rules when selecting a location 1 Locate thermostat about 5 ft above the floor 2 Install thermostat on a partitioning wall not on an outside wall 3 Never expose thermostat to direct light from lamps sun fireplaces or any temperature radiating equip ment 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 7 Never locate thermostat in a room that normally warmer or cooler than the rest of the building 8 Avoid locations with poor air circulation such as behind doors or in alcoves THERMAL DATA Setpoint Temperature Range 40 F to 99 F 4 C to 37 C Operating Ambient Temperature Range 32 F to 105 F Operating Humi
11. on Route Wires to Location Replacement Installation Remove Old Thermostat Attach Subbase to Wall Attach Thermostat to Subbase Operation System Configuration Set Option Switches Check Thermostat Operation Fan Operation Heating System Cooling System Troubleshooting WHITE RODGERS DIVISION EMERSON ELECTRIC CO 9797 REAVIS ROAD ST LOUIS MISSOURI 63123 5398 IEMIERSON DESCRIPTION PRECAUTIONS 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 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 A WARNING Do not use on circuits exceeding specified volt age Higher voltage will damage control and could cause shock or fire hazard Do not short out terminals on gas valve or pri mary control to test Short or incorrect wiring will burn out thermostat and could cause personal injury and or property damage PART NO 37 5185A Printed in U S A 9329 SPECIFICATIONS THIS CONTROL IS DESIGNED FOR USE WHERE BOTH SIDES OF THE TRANSFORMER ARE PRESENT TO THE THERMOSTAT both the hot and common sides of the 24vAC end of the transformer ELECTRICAL DATA Electrical Rating 20 t
12. on simply press and buttons at the same time at initial startup 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 Attention Technical Service Department WARRANTY INFORMATION THIS WARRANTY STATEMENT SUPERSEDES ALL WARRANTY STATEMENTS DATED PRIOR TO OCTOBER 1 1991 White Rodgers Division of Emerson Electric Co Seller war rants that its products purchased for resale the Products will be free from defects in material and workmanship under normal use and service for a period of twelve 12 months from date of installation Seller s obligation under this warranty and Purchaser s exclusive remedy for the breach thereof shall be limited to at Sellers option Seller s replacement of any defective Product F O B Seller s factory excluding the cost of labor and any other expenses incurred in servicing the unit on which the Product is installed or Seller s issuance of a credit in the amount of the purchase price of such Product for resale as described below Seller shall have the option of requiring the return of any defective Product transportation charges prepaid before recognizing any claim This warranty shall not apply to any Product 1 which has been repaired or altered outside Seller s factory by other than Seller in any manner so as in Seller s judgment to affect its serviceability or
13. onnected there will be a six second delay before the reversing valve is switched CHECK THERMOSTAT OPERATION EMERGENCY MODE OPERATION FAN OPERATION 1 Press until EMER is displayed The red 7 EMER LED should be lit continuously non flashing Turn on power to the system If the auxiliary heat regardless of system cycling Source has a Stenging pict DS Surto gatit 2 Press 4m to adjust thermostat about 5 F above Press until FAN ON is displayed The blower room temperature Any systems such as electric strip heaters fossil fuel systems etc that are wired should begin to operate iar 9 P or jumpered to the emergency circuit thermostat Press until FAN AUTO is displayed The terminal E1 should begin to cycle blower should stop operating within approximately one minute After the system has been checked and is running prop erly determine if automatic changeover is desired see HEATING SYSTEM SYSTEM CONFIGURATION Refer to the OPERATION GUIDE if you need additional Press until HEAT is displayed it may al information on thermostat operation ready be displayed Press Ca to adjust thermostat to 99 F All stages of TROUBLESHOOTING the heating system should begin to operate within approximately five minutes However if the PUMP Refer to the Question amp Answer section of the OPERA LED is flashing the compressor lockout feature is TION GUIDE for information on troubleshooting the ther operating see Lockout Bypass Option to
14. ranty from White Rodgers Your supplier can rely on a nearby White Rodgers wholesaler for prompt credit or replacement
15. step 3 Switch 3 see step 4 Switch 4 see step 5 O Switch 1 see steps 1 amp 2 Switch 2 ON Switch 3 see step 4 Switch 4 see step 5 Switch 1 see steps 1 amp 2 Switch 2 see step 3 Switch 3 ON Switch 4 see step 5 tors and the plastic snaps lock into place see fig 7 Be gentle when attaching thermostat If the thermostat does not seem to be attaching to the subbase easily make sure that the connector pins and plastic snaps are properly aligned and that excess wire is pushed into the wall Damage to the thermostat may occur if force is used _ ENGAGE TWO UPPER GUIDES PIVOT DOWN Figure 7 Attaching thermostat to subbase 4 pin connector Battery Option switches 9 pin connector Figure 8 Back of thermostat 5 Total Keypad Lockout Enabled Option switches 1 2 and 3 should be changed if required programming should be completed and bat tery should be installed before changing option switch 4 ON Switch 1 see steps 1 amp 2 Switch 2 see step 3 Switch 3 see step 4 Switch 4 ON 123 4 REVERSING VALVE DELAY OPTION The diode designated as CR5 controls whether or not there will be a delay in reversing valve switching see fig 8 With the diode installed and operational there is no delay If the diode is not operational or is disc
16. when safety circuits second transformer is jumpered to the COMMON exist in both systems side of the first transformer a short will be made Damage to equipment will occur when power is restored I I I r o o o ser Malf i T Thermostat iiS hg Control J eyi Circuit A te es et eee i VSO Lae ree Lote S I THERMOSTAT O O O O O O O O O OG OO res SYSTEM Pon omn Changeover Compressor Damper l Emergency System Limit or Limit or Energized Contactor Relay Monitor Safety Hot Safety Motor l Constant Switch Switch Switch In Heat Stage 2 I Output witee gt a i witenes l p SS eee 24vAC 120vAC L Neutral Changeover Compressor Fan Heat Emergency T m oavac AUXILIARY Energized Contactor Relay Relay i a i f 4 Accessory TRANSEORMEA In Cool Stage 1 Stage 1 Relay N O g I Output Contact I I d o ee i ade BE I HEAT PUMP SYSTEM AUXILIARY HEATING SYSTEM Limit or Limit or l Safety Hot Safety l Switches fe ed Switches TWO COMMONS MUST 24vAC 120vAC BE JUMPERED TOGETHER Neutral HEAT PUMP TRANSFORMER Figure 6 Typical wiring diagram for two transformer system with safety circuits in BOTH systems ATTACH
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