Page 2 - IV DELUXE PROGRAMMABLE HEAT PUMP THERMOSTATS; WIRING; CAUTION; Disconnect power before wiring.; in a heat pump system.; Mounting Thermostat; Press lower edge of case to close and latch.
T8611G CHRONOTHERM ® IV DELUXE PROGRAMMABLE HEAT PUMP THERMOSTATS 69-1406—1 2 Fig. 1. Typical location of thermostat. Fig. 2. Mounting the wallplate. WIRING All wiring must comply with local electrical codes and ordinances. Refer to Fig. 3 for typical hookup. A letter code is located near each termi...
Page 3 - SETTINGS; System and Fan Settings; System settings control the thermostat operation:; LED Indication
T8611G CHRONOTHERM ® IV DELUXE PROGRAMMABLE HEAT PUMP THERMOSTATS 3 69-1406—1 Using Thermostat Keys (Fig. 6) The thermostat keys are used to:• set current day and time,• program times and setpoints for heating and cooling,• temporarily override program temperatures, • display present setting, • conf...
Page 4 - Temperature Settings; INSTALLER SETUP; IMPORTANT
T8611G CHRONOTHERM ® IV DELUXE PROGRAMMABLE HEAT PUMP THERMOSTATS 69-1406—1 4 Temperature Settings Refer to Table 2 for the default program. If the daytime energy savings period is not used, press the period key (Leave or Return) until the time is blank. The fan setting feature is available on selec...
Page 7 - Setting Current Day and Time; INSTALLER SYSTEM-TEST; Table 4. Tests Available In Installer System Test.; Test Number
T8611G CHRONOTHERM ® IV DELUXE PROGRAMMABLE HEAT PUMP THERMOSTATS 7 69-1406—1 Setting Current Day and Time 1. Press Set Current Day/Time. NOTE: On initial powerup or after an extended power loss, 1:00 pm flashes on the display until a key is pressed. 2. Press Day until the current day is displayed. ...
Page 9 - THERMOSTAT INFORMATION; Outdoor Temperature Sensor
T8611G CHRONOTHERM ® IV DELUXE PROGRAMMABLE HEAT PUMP THERMOSTATS 9 69-1406—1 THERMOSTAT INFORMATION 1. Press the Time ∆ key to access the thermostat information. 2. Press the increase ▲ key to display the production date code. The first two large digits are the month and the third digit is the last...
Page 10 - TROUBLESHOOTING GUIDE; Symptom
T8611G CHRONOTHERM ® IV DELUXE PROGRAMMABLE HEAT PUMP THERMOSTATS 69-1406—1 10 TROUBLESHOOTING GUIDE Table 6. Troubleshooting Guide. Symptom Possible Cause Action Display will not come on. Thermostat is not being powered. • Check for 24 Vac between R and C terminals. — If missing 24 Vac: — check if ...
Page 2 - IV DELUXE PROGRAMMABLE HEAT PUMP THERMOSTATS; WIRING; CAUTION; Disconnect power before wiring.; in a heat pump system.; Mounting Thermostat; Press lower edge of case to close and latch.
T8611G CHRONOTHERM ® IV DELUXE PROGRAMMABLE HEAT PUMP THERMOSTATS 69-1406—1 2 Fig. 1. Typical location of thermostat. Fig. 2. Mounting the wallplate. WIRING All wiring must comply with local electrical codes and ordinances. Refer to Fig. 3 for typical hookup. A letter code is located near each termi...
Page 3 - SETTINGS; System and Fan Settings; System settings control the thermostat operation:; LED Indication
T8611G CHRONOTHERM ® IV DELUXE PROGRAMMABLE HEAT PUMP THERMOSTATS 3 69-1406—1 Using Thermostat Keys (Fig. 6) The thermostat keys are used to:• set current day and time,• program times and setpoints for heating and cooling,• temporarily override program temperatures, • display present setting, • conf...
Page 4 - Temperature Settings; INSTALLER SETUP; IMPORTANT
T8611G CHRONOTHERM ® IV DELUXE PROGRAMMABLE HEAT PUMP THERMOSTATS 69-1406—1 4 Temperature Settings Refer to Table 2 for the default program. If the daytime energy savings period is not used, press the period key (Leave or Return) until the time is blank. The fan setting feature is available on selec...
Page 7 - Setting Current Day and Time; INSTALLER SYSTEM-TEST; Table 4. Tests Available In Installer System Test.; Test Number
T8611G CHRONOTHERM ® IV DELUXE PROGRAMMABLE HEAT PUMP THERMOSTATS 7 69-1406—1 Setting Current Day and Time 1. Press Set Current Day/Time. NOTE: On initial powerup or after an extended power loss, 1:00 pm flashes on the display until a key is pressed. 2. Press Day until the current day is displayed. ...
Page 9 - THERMOSTAT INFORMATION; Outdoor Temperature Sensor
T8611G CHRONOTHERM ® IV DELUXE PROGRAMMABLE HEAT PUMP THERMOSTATS 9 69-1406—1 THERMOSTAT INFORMATION 1. Press the Time ∆ key to access the thermostat information. 2. Press the increase ! key to display the production date code. The first two large digits are the month and the third digit is the last...
Page 10 - TROUBLESHOOTING GUIDE; Symptom
T8611G CHRONOTHERM ® IV DELUXE PROGRAMMABLE HEAT PUMP THERMOSTATS 69-1406—1 10 TROUBLESHOOTING GUIDE Table 6. Troubleshooting Guide. Symptom Possible Cause Action Display will not come on. Thermostat is not being powered. • Check for 24 Vac between R and C terminals. — If missing 24 Vac: — check if ...