Honeywell CT1501 User's Manual
Contents
1. COIL A POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED u202 CT1502 continued SINGLE STAGE HEAT PUMP WITHOUT AUXILIARY HEAT SYSTEM COMPRESSOR CONTACTOR COIL POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED A IF COMPRESSOR IS CONNECTED TO OLD THERMOSTAT S Y TERMINAL WITH A JUMPER TO W USE NEW THERMOSTAT S TERMINAL FOR COMPRESSOR IF OLD THERMOSTAT HAS ONE WIRE TO AND ONE W USE AND W ON NEW THERMOSTAT DO NOT USE IMPORTANT IF OLD THERMOSTAT USES A W2 AUXILIARY OR EMERGENCY HEAT TERMINAL THIS THERMOSTAT MAY NOT BE USED THIS THERMOSTAT IS NOT DESIGNED TO CONTROL AUXILIARY HEAT A SOME HEAT PUMPS USE 8 INSTEAD OF 2415 Connect the wires to matching terminals on the subbase Firmly tighten screws Push excess wire back into wall and plug hole in wall with nonflammable insulation to prevent drafts from affecting thermostat operation For CT1503 750 millivolt heating Connect either wire to R terminal and the other wire to W terminal Firmly tighten screws Push excess wire back into wall and plug hole in wall with nonflammable insulation to prevent drafts from affecting thermostat operation CQ200A OR Q313A THERMOPILE GENERATOR HEATING RELAY OR VALVE COIL M2418 69 0273 9 A m MOUNT THE THERMOSTAT Note the tabs on the top inside edge of the thermostat2. A POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED M2413 NOTE If there are four wires connect wire marked R to terminal RH and add a jumper wire to connect to RC If RC is left uncon nected the air conditioner will not turn on The 4 wire drawing on this page shows how to jumper RC to RH Strip the insulation off the wire where it connects to the terminals Firmly tighten screws 4 WIRE SYSTEM HEATING RELAY OR VALVE COIL A POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED INSTALL JUMPER BETWEEN RC AND RH M2414 If the labels do not agree with the terminal designations on your new subbase Refer to Table 2 on page 8 e Determine correct hookup from the listed control function and the equipment control circuit 69 0273 9 TABLE 2 TERMINAL DESIGNATIONS OLD SUBBASE TERMINAL R or RH RC oioi xis CONTROL FUNCTION Heating transformer power to control circuit Cooling transformer power to control circuit Heating relay or valve Cooling relay Fan relay Heating changeover valve or damper control circuit Cooling changeover valve or damper control circuit Heat pump compressor control circuit Push excess wire back into wall and plug hole in wall with nonflammable insulation to prevent drafts from affecting thermostat operation For CT1502 heating cooling CENTRAL ELECTRIC SYSTEM HEATING CONTACTOR RELAY OR COIL VALVE
3. ARROW HIND THERMOSTAT HELD ON BY TWO NEW CAPTIVE SCREWS THERMOSTAT BASE CAPTIVE MOUNTING SCREW 12 719C PREPARATION STEP LJ Check thermostat and wallplate suitability for your heating or heating cooling system Refer to Table 1 THERMOSTAT SUBBASE OR MODEL WALLPLATE INCLUDED FOR USE WITH CT1500 199986C Wallplate 2 wire 15 to 30 volt control circuit For gas or oil heating system CT1501 Q682A1079 Subbase 4 or 5 wire 15 to 30 volt control circuit For gas or oil heating cooling system 4 wire 15 to 30 volt control circuit For single stage heat pump or central electric heating cooling systems that require the thermostat to control the fan in heating CT1503 199986D Wallplate 750 millivolt single stage heating system Thermostat must be mounted on wallplate or subbase included in package to assure operation CT1502 Q682B1227 Subbase LJ Assemble tools required as illustrated FLAT BLADE SCREWORIVER n WIRE CUTTER STRIPPER on SHARP KNIFE IF NEEDED TO STRIP WIRE HAND OR POWER DRILL WITH 3 16 INCH DRILL BIT IF NEEDED TO 4 DRILL HOLES IN WALL H ED MASKING TAPE IF NEEDED TO LABEL WIRES AS THEY ARE DISCONNECTED FROM OLD THERMOSTAT SPIRIT LEVEL TO LEVEL THERMOSTAT FOR ACCURATE OPERATION 13 018 1 69 0273 9 If wallplate or subbase is mounted on a vertical outlet box check old installation order 196393A Cover Plate and Adapter Ring see appro priate fi
4. Honeywell CT1500 CT1501 CT1502 CT1503 ELECTROMECHANICAL FUEL SAVER THERMOSTAT AND WALLPLATE SUBBASE CT1500 24 V gas or oil heat CT1501 24 V gas or oil heat cool CT1502 24 V central electric heat cool or single stage heat pump without auxiliary heat CT1503 750 millivolt heat NOT FOR USE ON LINE VOLTAGE 120 V SYSTEMS INSTALLATION MANUAL Any questions concerning the application of this thermostat should be directed to Honeywell Consumer Services at 1 800 468 1502 Monday Friday 7 30 a m 5 00 p m Central time S M Rev 7 91 Honeywell Inc 1991 Form Number 69 0273 9 THERMOSTAT FEATURES I Front of thermostat HIGH TEMPERATURE CONTROL LEVER em LOW TEMPERATURE CONTROL LEVER BLUE 50 60 70 80 THERMOSTAT THERMOMETER COVER 12 717 II Hinged cover lifted FLIP UP COVER We P PROGRAM PINS 24 HOUR PROGRAM DIAL GREY AREA FOR NIGHT SETTING PROGRAM PIN SLOT ee E RAM PIN TIMER SETTING KNOB THERMOSTAT COVER STORAGE PROGRAM TIME INDICATOR Va iss INDEX WHEEL ARROW IlI Cover removed 24 HOUR PROGRAM DIAL GREY AREA FOR NIGHT SETTINGS LOW TEMPERATURE CONTROL LEVER BLUE HIGH TEMPERATURE CONTROL LEVER RED _ 542 ALKALINE BATTERY 2 INCLUDED SWITCH BULBS ADJUSTABLE HEAT ANTICIPATOR HEAT ANTICIPATOR SETTING LEVER metr BE INDEX INDICATOR WHEEL
5. ING ONLY WALLPLATE 11 3618 base will be level Drill 3 16 in holes and gently tap anchors into holes until flush with the wall Position wallplate or subbase as shown in appropriate figure and loosely insert the screws supplied e Wm PLASTIC 3 SCREW WITH PLASTIC ANCHORS ra P y V HEATING ONLY 2 2 PF WALLPLATE e HEATING COOLING SUBBASE M1552A 11 3588 Carefully level the wallplate or subbase and firmly tighten screws ASSEMBLY SPIRIT LEVEL MOUNTING SCREWS SUBBASE OR K ex WALLPLATE MOUNTING SCREWS 2 5 69 0273 9 A WIRE WALLPLATE SUBBASE 0 NOTE All wiring must comply with local electrical codes and ordinances Refer to illustration and strip thermostat wire insulation as necessary FOR STRAIGHT CONNECTION STRIP 5 16 in 8 mmi FOR WRAPAROUND CONNECTION STRIP 7 16 in 11 mm BARRIER M15568 For CT1500 heating only POWER SUPPLY PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED Connect either wire to R terminal and the other wire to W terminal Firmly tighten screws Push excess wire back into wall and plug hole in wall with nonflammable insulation to prevent drafts from affecting thermostat operation For CT1501 heating cooling Connect the wires to matching terminals on the subbase 5 WIRE SYSTEM HEATING RELAY OR VALVE COIL
6. base These fit the slots molded into the top of the wallplate or subbase Hang the thermostat base on the wallplate or subbase as shown in illustration CAPTIVE MOUNTING SCREWS Insert the two captive mounting screws located in the bottom corners of the thermo stat base see illustration firmly tighten IMPORTANT Do NOT cycle heating system until Step 7 is completed _ TAB 2 MOUNTING SLOT 2 be e OR SUBBASE THERMOSTAT BASE 12 7324 a SET HEAT ANTICIPATOR LEVER NOTE Not applicable on CT1503 millivolt model The thermostat s adjustable heat anticipator must be correctly set to accurately control the on time length of the system An incorrect setting can result in room temperature swings or burn out the anticipator and void the thermostat warranty Make sure you have the current draw antici pator setting for your system This is the number you wrote in the box in Step 3 If you were unable to find the current draw for Step 3 this information can be found printed on the primary control at the furnace or boiler The primary control is usually a SHOWS VOLTAGE RATING SHOWS ANTICIPATOR SETTING FROM MAIN FUEL SUPPLY ZONE VALVE 24 Vac 50 60 Hz 0 4 gas valve a relay or burner control box Aquastat controller or zone valve with the thermostat wires connected to it These controls are usually located behind the furnace cover See next
7. both levers 5 F 3 C below room temper ature The heat should shut off O Operate the entire heating system for at least one complete cycle IMPORTANT If thermostat fails any test refer to trouble shooting guide in owner s manual Heating Cooling System Turn on power to the furnace and cooling system O Place the system switch lever at HEAT and the fan switch lever at AUTO O Push both temperature control levers together at least 5 F 3 C above room temperature The heat should come on The fan will start when the furnace heats up On the CT1502 the fan will start immediately O Move both levers together 5 F 3 C below room temperature The heat should shut off The fan will stop when the furnace cools IMPORTANT To avoid compressor damage do not operate the cooling system if outdoor temperature is below 50 F 10 Refer to manufacturer s recommendations Place the system switch lever at COOL and the fan switch lever at AUTO Push both temperature control levers together at least 5 F 3 C below room temperature The cooling equipment should operate and the fan will start Allow for any time delay that may be built into the compressor control circuit O Move both levers together 5 F 3 C above room temperature The cooling equipment should shut off Place the fan switch at ON The fan should run continuously with the system switch in any position O Place the system sw
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9. gure under step 4 Call Honeywell Consumer Services 1 800 468 1502 for ordering information Monday Friday 7 30 a m to 5 00 p m Central time Test to make certain that your heating and cooling systems are working If either one does not work contact your local heating air conditioning dealer NOTE Do not operate cooling system if outdoor temperature is below 50 F 10 C C Turn off power to the heating cooling system at the main fuse panel UNPACK THERMOSTAT 0 Remove discard shipping wrap Save package of screws instructions and receipt Remove thermostat cover by lifting up from the bottom Carefully remove insert protecting switch bulbs C Loosen two captive mounting screws and separate wallplate or subbase from back of thermostat base THERMOSTAT oer MOUNTING SCREWS ON THERMOSTAT BASE 12 652 Remove cover of old thermostat If the cover doesn t snap off when pulled firmly from the bottom check for a screw that locks the cover on Before removing the old thermostat from the wall look at it carefully to locate the heat anticipator adjustment mechanism See illustration to help you recognize the heat anticipator Make a note here of that anticipator setting for future reference If your thermostat does not have a heat anticipator do not be concerned Move on to next paragraph Loosen screws holding thermostat to wallplate subbase or wall and
10. he knob in clockwise 7 direction Do NOT reverse the knob When time is correctly set the Time Indicator Arrow see illustration must point to the correct time and the corresponding daytime light or nighttime dark portion of the program dial 13 PROGRAM PIN 4 SEE OWNERS MANUAL FOR DETAILS TIME INDICATOR ARROW SETTING KNOB M1855 69 0273 9 ATTACH THERMOSTAT COVER STEP Make sure the packing inserts in the thermo Stat base have been removed as explained in step 3 Place the two tabs on upper edge of cover into mounting slots in thermostat base Swing cover downward until it engages catch at bottom of base 14 CHECK OUT THERMOSTAT OPERATION AND SET TEMPERATURE CONTROL LEVERS A The two levers on top of the thermostat LOW TEMP BLUE MARK HIGH TEMP RED MARK a SET LEVER SET LEVER control the low and high temperature for n energy savings and comfort control as shown d 7777 LTE illustration 12 731A CAUTION Do NOT check operation by shorting across terminals of relay or valve coil this will burn out the thermostat heat anticipator which will void the warranty 15 69 0273 9 Heating only System Turn on power to the furnace C Push both temperature control levers together at least 5 F 3 C above room temperature The heat should come on The fan will start when the furnace heats up O Move
11. illustration If current rating is still unavailable proceed as follows Connect the probes of an ac ammeter 0 to 2 0 A for example between R or RH and W terminals on the wallplate or subbase Let the system operate through the ammeter for at least one minute before taking reading Record the reading here OIL BURNER CONTROL SHOWS ANTICIPATOR SETTING 22 SHOWS VOLTAGE RATING TO BURNER SHOWS ANTICIPATOR SETTING TYPICAL GAS VALVE 69 0273 9 On the CT1500 CT1501 or CT1502 thermo stats move the heat anticipator indicator to match the number you recorded in Step 4 or found on the primary control as shown above or as recorded in Step 7 ANTICIPATOR SCALEPLATE ANTICIPATOR SETTING LEVER 12 716A IMPORTANT Most hot water systems require a setting of 1 3 times the valve current rating 12 INSTALL TIMER BATTERIES STEP Power is supplied to the timer by two AAA alkaline batteries included Install timer bat teries in thermostat as shown Once a year or when batteries are dead replace with two new AAA alkaline batteries Other types of batteries are more likely to leak which could damage the timer The thermostat itself will operate without batteries but will not operate as a fuel saver BATTERY LOCATION FOR 2 AAA BATTERIES INSTALL WITH POSITIVE ENDS UP Sei AN e SET TIMER STEP Adjust the timer by moving t
12. itch at OFF Move both temperature levers to various positions The heating and cooling systems should not operate Operate the entire system for at least one complete cycle with the system switch at COOL and one complete cycle with the switch at HEAT D IMPORTANT If thermostat fails any test refer to trouble shooting guide in owner s manual 16 After checkout reset both temperature levers to desired temperatures For heating season Move the blue lever to the energy savings temperature you want when you are sleeping or your home is not occupied Setthe red lever to the temperature you want for normal comfort periods For cooling season Move the red lever to the energy savings temperature you want when you are sleeping or your home is not occupied 17 Setthe blue lever to the temperature you wantfor normal comfort periods REFER TO THE OWNER S MANUAL FORM 69 0333 FOR OPERATING AND PROGRAMMING INSTRUCTIONS IF YOU HAVE QUESTIONS REGARDING THE INSTALLATION OF THE HONEYWELL FUEL SAVER THERMOSTAT PLEASE CALL OUR TOLL FREE CONSUMER SERVICES GROUP NUMBER AT 1 800 468 1502 MONDAY FRIDAY 7 30 AM 5 00 PM CENTRAL TIME 69 0273 9 Residential and Building Controls Division Honey well Inc 1985 Douglas Drive No Golden Valley MN 55422 Honeywell Residential and Helping You Control Your World Building Controls Division Honeywell Limited Honey well Limit e 740 Ellesmere Roa
13. lift away OLD THERMOSTAT ANTICIPATOR SCALE OLD THERMOSTAT ANTICIPATOR SETTING LEVER 87888 REMOVE OLD THERMOSTAT Disconnect wires from old thermostat wall plate or subbase Tape each wire and label with the letter of the terminal designation to make reconnection easier If there are only two wires labeling is not necessary IMPORTANT If old thermostat has B or O terminals this thermostat cannot be used on your system EXCEPTION The CT1502 thermostat can be used on a system with B or O terminals One or two extra wires If you are replacing a Honeywell Chronotherm thermostat you may find one or two wires that go to the clock terminals on the Chronotherm thermostat wiring wallplate Do not allow them to touch or you may damage your transformer Disconnect the wires and wrap them separately using electrical tape Do not wrap them together Place the wires where they will not interfere with the operation of the new thermostat Record the colors and terminal designation labels of the rest of the wires 69 0273 9 STEP EXISTING HORIZONTAL OUTLET BOX HEATING COOLING SUBBASE M1553A If mounting on outlet box mount as shown on appropriate figure If mounting on wall hold wallplate or sub base in position and mark holes on wall Use spirit level to make sure wallplate or sub MOUNT WALLPLATE OR SUBBASE EXISTING 4 HORIZONTAL OUTLET BOX HEAT
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