CTl500, CT1501, CT1502, CT1503 ELECTROMECHANICAL FUEL SAVER THERMOSTAT AND WALLPLATEEUBBASE CTI500-24 V gas or oil heat. CTl501-24 V gas or oil heat/cool. CTI502--24 V central electric heat/cool or single stage heat pump without auxiliary heat. CTI 503-750 millivolt heat. NOT FOR USE ON LINE VOLTAGE (120 V) SYSTEMS. INSTALLATION MANUAL Any questions concerning the applicationof this thermostat should be directed to HoneywellConsumer Services at 1-800-468-1502, Monday-Friday 7 3 0 a.m.-500 pm.
THERMOSTAT FEATURES I-Front of thermostat. H l G H TEMPERATURE CONTROL L E V E R (RED) LOW TEMPERATURE CONTROL LEVER (BLUE)- 1 Ill-Cover removed. 24 HOUR PROGRAM DIAL 'THERMOSTAT COVER Il-Hinged THERMOMETER 1 11.711 cover lifted. .. .~ . , . . . . . . ANTICIPATOR PROGRAM PINS A "--CAPTIVE M O U N T I N G HIND THERMOSTAT. H E L D O N BY TWO CAPTIVE SCREWS.
"1 k PREPARATION ((1 THERMOSTAT MODEL SUBBASE OR WALLPLATE INCLUDED 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. CT1502 Q682B1227 Subbase 4-wire, 15 to 30 volt control circuit. For single stage heat pump or central electric heatinglcooling systems that require the thermostat to control the fan in heatino.
does not work, contact your local heatingfair conditioning dealer. If wallplate or subbase is mounted on a vertical outlet box (check old installation), order 196393A Cover Plate and Adapter Ring (see appropriate figure under step 4). Call Honeywell Consumer Services (1-800-468-1502) for ordering information, Monday-Friday, 7:30 a.m. to 500 p.m. Central time. NOTE: Do not operate cooling system if outdoor temperature is below 50' F [looC].
“3 F REMOVE OLD THERMOSTAT 0 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 h e r e l l o f that anticipator setting for future reference. If your thermostat does not have a heat anticipator, do not be concerned.
“4 b 10 MOUNT WALLPLATE OR SUBBASE If mounting on outlet box, mount as shown on appropriate figure. base will be level. Drill 3/16 in. holes and gently tap anchors into holes until flush with the wall. If mounting wall, hold wallplate or sub. ’ on .. base in position and mark holes on wall. Use spirit level to make sure wallplate or sub- Position wallplate or subbase as shown in appropriate figure, and loosely insert the screws supplied.
nCarefully level the wallplate or subbase and firmly u tighten screws. ..
WIRE WALLPLATE OR SUBBASE - For CT1500 heating-only MOTE: All wiring must comply with local electrical codes and ordinances. Refer to illustration and strip thermostat wire insulation as necessary. 0.: .F"rn -. .~STFldilRUT - . . .. . . CONNECTION- FOR WRAPAROUND CONNECTIONSTRlP7116In. [11 mml 0 , I I BARRIER A POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTIONAS REOUIRED. Wlll Connect either wire to R terminal and the other wire to W terminal. Firmly tighten screws.
For CT1501 heating/cooling Connect the wires to matching terminals on the subbase. 4-WIRE SYSTEM U U 5-WIRE SYSTEM I I I I RELAY OR VALVE COIL I 1 I I CONTACTOR I A POWER SUPPLY. PROVIDE DISCONNECT MEANSAND A INSTALL JUMPER BETWEEN RC AND RH. OVERLOAD PROTECTIONAS REOUIRED. Ma" POWER SUPPLY. PROVIDE DISCONNECT MEANS AND M2&13 NOTE: If there are four wires, connect wire marked R to terminal R H and add a jumper wire to connect to RC.
For CT1502 heatinglcooling OLDSUBBASE TERMINAL CONTROL FUNCTION R or RH Heating transformer power to control circuit RC Heating relay or valve. Y Cooling relay. G Fan relay. Heating changeover valve or damper control circuit. Cooling changeover valve or damper control circuit. Heat pump compressor control 0 P I I I Cooling transformer power to control circuit. W B CENTRAL ELECTRIC SYSTEM I 1 U CONTACTOR RELAY OR VALVE COIL Push excess wire back into wall.
CT1502, continued For CT1503 750-millivolt heating Connect either wire to R terminal and the other wire to W terminal. Firmly tighten screws. SINGLE STAGE HEAT PUMP (WITHOUT AUXILIARY HEAT) SYSTEM I - - 1 Push excess wire back into wall, and plug hole in wall with nonflammable insulation to prevent drafts from affecting thermostat operation.
L MOUNT THE THERMOSTAT or subbase as shown in illustration. Do NOT cycle heating system until Step 7 is completed.
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 (anticipator setting) for your system.
“8 On the CT1500. CT1501 or CT1502 thermostats, 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 F 0 INSTALL TIMER BATTERIES 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.
SET TIMER Adjust the timer by moving the knob in clockwise d i r e c t i o n . 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 (lighr) or nighitime (dark) portion of the program dial.
“10 I- 0 ATTACH THERMOSTAT COVER Make sure the packing inserts in the thermostat base have been removed. as explained in step 3 Place the two tabs on upper edge of cover into mounting slots i n thermostat base Swing cover downward until it engages catch at bottom of base 0 0 0 . .
il1 b cn CHECK OUT THERMOSTAT OPERATION AND SET TEMPERATURE CONTROL LEVERS The two levers on top of the thermostat control the low and high temperature for energy savings and comfort control, as shown in illustration. LOW TEMP.lBL"E MARK1 SET LEVER 1 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.
Heating-only System 0 Turn on power to the furnace. 0 Push both temperaturecontrol leverstogetherat least 5" F [3" C] above room temperature. The heat should comeon.Thefan will startwhen the furnace heats up. 0 Move both levers5" F [3"C] below room temperature. The heat should shut off. 0 Operate the entire heating system for at least one complete cycle. IMPORTANT If thermostat fails any test, refer to troubleshooting guide in owner's manual.
0 After checkout, reset both temperature levers to desired temperatures. 0 Setthebluelevertothetemperature you wantfor normal comfort periods. For heating season: REFER TO THE OWNERS MANUAL FORM 690333FOR OPERATING AND PROGRAMMING INSTRUCTIONS. Move the blue lever to the energy savings temperature you want when you are sleeping or your home is not occupied. 0 Setthered levertothetemperature you want for normal comfort periods.
Honeywell Residential and Building Controls Division Honeywell Inc. 1985 Douglas Drive No.