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T8611M Deluxe Programmable
Heat Pump Thermostats
INSTALLATION INSTRUCTIONS
APPLICATION
The T8611M Deluxe Programmable Heat Pump Thermostat provides electronic control of 24 Vac single-zone two
compressor or two speed heat pump systems with auxiliary heat. The T8611M can be configured to run a single
compressor heat pump system. Refer to Table 1 for a general description of the thermostat. All T8611 thermostats
require a common wire to supply power.
Table 1. Description of T8611 Thermostats.
F
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T8611M DELUXE PROGRAMMABLE HEAT PUMP THERMOSTATS NO YES NO 5 FEET NO [1.5 METERS] M10106 Fig. 1. Typical location of thermostat. Wallplate Installation The thermostat can be mounted horizontally on the wall or on a 2 in. x 4 in. (50.8 mm x 101.6 mm) wiring box. WALL Position wallplate horizontally on the wall or on a WIRES THROUGH WALL 2 in. x 4 in. (50.8 mm x 101.6 mm) wiring box. 1. Position and level the wallplate (for appearance only). The thermostat will function properly even WALL ANCH
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T8611M DELUXE PROGRAMMABLE HEAT PUMP THERMOSTATS WIRING All wiring must comply with local electrical codes and THERMOSTAT ordinances. Refer to Fig. 3 and 4 for typical hookups. A letter code is located near each terminal for identification. OT OT W3 O/B G Y1 C E L R X1 X2 2 CAUTION OUTDOOR TEMPERATURE Electrical Shock Hazard. SENSOR EM. HEAT EQUIPMENT Can cause electrical shock or equipment RELAY damage. MONITOR 2 Disconnect power before wiring. 3 1. Loosen the terminal screws on the wall
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T8611M DELUXE PROGRAMMABLE HEAT PUMP THERMOSTATS NOTE: Always press the keys with your fingertip or Mounting Thermostat similar blunt tool. Sharp instruments like a pen 1. Engage tabs at the top of the thermostat and or pencil point can damage the keyboard. wallplate. See Fig. 6. 2. Press lower edge of case to close and latch. NOTE: To remove the thermostat from the wall, first pull out at the bottom of the thermostat; remove top last. Using Thermostat Keys A. ENGAGE TABS AT TOP OF The th
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T8611M DELUXE PROGRAMMABLE HEAT PUMP THERMOSTATS INSTALLER SETUP NOTE: For most applications, the thermostat factory- settings will not need to be changed. Review the factory settings in Table 2 and if no changes are necessary, go to the Installer System Test Time Set Program Run Set Current Wake Leave Return Sleep Program Day/Time section. System Heat/Cool Hold Temp Day Settings System Fan Daylight Copy Time The Installer Setup is used to customize the thermostat Fan to specific systems. So
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T8611M DELUXE PROGRAMMABLE HEAT PUMP THERMOSTATS Table 3. Thermostat Installer Setup Options. Installer Setup Other Choices Number (Press Factory Setting (Press s or t key to change) Time ∆ key to Actual Select change) Display Description Display Description Setting Not Used. 1 thru 4 Number of 3 2 Two compressor 1 Single stage compressor compressor stages or two systems. stages. speed compressor. Heating cycle. Not Used. 33 cph 6 6 Auxiliary heat. 3, 6 or 9 66 cph used for
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T8611M DELUXE PROGRAMMABLE HEAT PUMP THERMOSTATS Table 3. Thermostat Installer Setup Options. (Continued) Installer Setup Other Choices Number (Press Factory Setting (Press s or t key to change) Time ∆ key to Actual Select change) Display Description Display Description Setting Minimum off 33 5 5 minutes 0 thru 4 Minimum number of minutes time for the minimum off time (0 thru 5) the compressor is compressor. for the off between calls for the compressor. compressor. Temperature 34 90 Highest
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T8611M DELUXE PROGRAMMABLE HEAT PUMP THERMOSTATS Setting Current Day and Time View or Reset Timer Settings 1. Press Set Current Day/Time. When the thermostat activates a timer, the thermostat flashes Filter until the timer resets. NOTE: On initial powerup or after an extended power loss, 1:00 pm flashes on the display until a key 1. Reset the timer by pressing the i key until the is pressed. expired timer is displayed. Set Day/Time Time Set Program PM Filter Days Run Set Current Wake Leave Se
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T8611M DELUXE PROGRAMMABLE HEAT PUMP THERMOSTATS System Wait Set Program Set Day/Time Temporary Setting Em Heat Recovery AM Off Cool Hold for PM Auto Filter Em Ht Aux Ht Days Fan MonTue Wed Thu Fri Sat Sun Repl Batt Room Outdoor On Wake Leave Return Sleep DST Heat Cool Auto M14612 M14559 Fig. 13. Display of test number. Fig. 12. Display of all LCD segments. Refer to Table 5 for the directions and results of the specific tests. NOTE: Press Time ∆ to advance to the next test and Time ∇ to go b
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T8611M DELUXE PROGRAMMABLE HEAT PUMP THERMOSTATS THERMOSTAT INFORMATION 1. Press the Time ∆ key to access the thermostat 4. Press the increase s key again to display the information. software revision number. (Example: 001 = Revision number 1). M14613 M14616 2. Press the increase s key to display the production 5. Press the increase s key again to display the date code. The first two large digits are the month EEPROM identification code. (Example: 314 = and the third digit is the last dig
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T8611M DELUXE PROGRAMMABLE HEAT PUMP THERMOSTATS TROUBLESHOOTING GUIDE Table 6. Troubleshooting Guide. Symptom Possible Cause Action Display doesnot Thermostat is not being Check for 24 Vac between R and C terminals. come on. powered. If missing 24 Vac: check if the circuit breaker is trippedreset the circuit breaker. check if the system fuse is blownreplace the fuse. check if the power switch on the HVAC equipment is in the Off positionset to the On position. check wiring betwe
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T8611M DELUXE PROGRAMMABLE HEAT PUMP THERMOSTATS Table 6. Troubleshooting Guide. (Continued) Symptom Possible Cause Action System on indicator Heating or cooling equipment is Verify operation of heating or cooling equipment in self-test. (flame=heat, not operating. snowflake=cool) is displayed, but no warm or cool air is coming from the registers. Outdoor tempera- Option not activated. Enter Installer Setup number 24 and set to 1. Thermostat must a have OT terminals and a C7089B1000 instal
