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Honeywell CT8611 Installation Manual

Programmable heat pump thermostat
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CT8611
PROGRAMMABLE
HEAT PUMP THERMOSTAT
INSTALLATION MANUAL
IMPORTANT: This thermostat may be programmed either
before or after installation. Refer to Owner's Guide,
form 69-0398, for programming instructions.
12-93 • Form Number 69-0816
1
69-0816

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  Summary of Contents for Honeywell CT8611

  • Page 1 CT8611 PROGRAMMABLE HEAT PUMP THERMOSTAT INSTALLATION MANUAL IMPORTANT: This thermostat may be programmed either before or after installation. Refer to Owner’s Guide, form 69-0398, for programming instructions. 12-93 • Form Number 69-0816 69-0816...
  • Page 2 Toll-free Customer Assistance For all questions concerning this thermostat, please read and follow the instructions. If additional assistance is needed, call Honeywell Customer Assistance toll-free at 1-800-468-1502, Monday-Friday, 7:00 a.m.-5:30 p.m. Central Time. Before you call, please have the following information available—thermostat model number and date code, kind of heating/cooling system (i.e., hot water, warm air, oil, gas, etc.), number of wires connected to...
  • Page 3 The ENRG SAV LED lights during the LEAVE and SLEEP periods. The CT8611 also includes AUX. HT. and EM. HT. LEDs near the bottom center of the subbase. The AUX. HT. LED lights whenever the thermostat is calling for operation of the backup or auxiliary heater.
  • Page 4: Tools Required For Installation

    TOOLS REQUIRED FOR INSTALLATION Assemble a flat blade screwdriver and other tools as needed (right). Test to make certain that your heating and cooling systems are working properly. If either does not work, contact your local heating/air condi- tioning dealer. To avoid compressor damage, do not operate the cooling system if outdoor tempera- ture is below 50 F [10 C].
  • Page 5: Remove Old Thermostat

    Disconnect wires from old thermostat or sub base. Always label all wires as you disconnect them from your old thermostat. Use the CT8611 Wire Tags provided to label each wire with the appropriate terminal designation as you remove it. It is important to note the terminal designation when removing wires.
  • Page 6 Do not discard your old thermostat until you have thoroughly checked out system opera- tion with your new Honeywell CT8611 Heat Pump Thermostat installed. If your old thermostat con- tains mercury, do not dispose of it in the trash, see below.
  • Page 7 MOUNT THERMOSTAT SUBBASE The subbase does not require leveling for proper operation; level it for appearance only. Remove thermostat from subbase (Fig. 1). Mount the subbase directly onto the wall with the screws included in the package. Use the subbase as a template, and with a pencil, mark the two mounting screw positions (Fig.
  • Page 8: Wire Thermostat Terminals

    Honeywell Customer Assistance with your questions Monday-Friday, 7:00 a.m.- 5:30 p.m., Central time, 1-800-468-1502. Refer to the CT8611 Heat Pump Thermostat Wiring Guide, form 69-0817, and to the wire labels you applied when you removed the old thermostat. Match the letter from your old ther- mostat wire with the appropriate letter on your new thermostat.
  • Page 9 DEFROST AUX. HT. CONTACTOR RELAY CONTROL EM. HT. MONITOR RELAY POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. Fig. 4—Typical hook up of CT8611 with jumper intact. CT8611R MONITOR HEAT DEFROST C/O RELAY COOL CONTROL (HOT) POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
  • Page 10: Complete Installation

    A CHANGE IN CYCLE RATE. The room air temperature normally varies slightly from the comfort temperature setting with the cycling of the heat pump or auxiliary heater. INSTALL BATTERIES Three AAA alkaline batteries are included with the thermostat to prevent program loss in case of power outage.
  • Page 11: Mount The Thermostat

    program will remain for only about 20 seconds in the event of power loss. When batteries are first installed, the display will flash 1:00 PM and 32 . When the batteries are low, the display will flash REPL BAT. You have 20- 30 seconds to replace batteries after removing them from the thermostat.
  • Page 12: Set Day And Time

    SET DAY AND TIME Restore 24V power to the thermostat. When power is applied, the display will read 1:00 PM and indicate the room temperature. It will go off for a few seconds, then begin to flash on and off. Set the present day and time.
  • Page 13: Check Thermostat Operation

    During normal operation, the backup heat will come on after a delay. Backup (auxiliary) heat is more expensive to operate than the heat pump and typically is used only when the heat pump is unable to handle the load. CHECK EMERGENCY HEATING OPERATION Move the system switch to EM.
  • Page 14: The Optimum Comfort And Energy Savings Solution

    ABOUT ADAPTIVE INTELLIGENT RECOVERY • People perceive temperature from a variety of sources, not only from the air in the room, but also from their surroundings—walls, windows and furnishings. • Human beings feel differences in temperature as slight as two degrees Fahrenheit. •...
  • Page 15 IF ADDITIONAL ASSISTANCE IS NEEDED, PLEASE CONTACT HONEYWELL CUSTOMER ASSIS- TANCE AT 1-800-468-1502, MONDAY-FRIDAY, 7:00 AM-5:30 PM, CENTRAL TIME. BEFORE YOU CALL, PLEASE HAVE THE FOLLOWING INFORMATION AVAILABLE: TYPE OF HEATING SYSTEM, IGNITION TYPE, WHETHER GAS OR ELECTRIC AIR CONDITIONING, MODEL NUMBER OF OLD THERMOSTAT, NUMBER OF WIRES, AND TERMINAL DESIGNATIONS USED.
  • Page 16 Home and Building Control Honeywell Inc. 1985 Douglas Drive North Golden Valley, Minnesota 55422 G.S. 12-93 ©Honeywell Inc. 1993 Printed in Tiawan Form Number 69-0816 Home and Building Control Honeywell Limited—Honeywell Limitée 740 Ellesmere Road Scarborough, Ontario M1P 2V9 Helping You Control Your World...