Owner's Manual
Page 10
Temperature setting is too warm or cool. • Check that the SYSTEM switch on . See equipment manufacturer instructions. Troubleshooting Guide CAUTION To avoid possible equipment damage, do not operate cooling when outside temperature is set to Heat or Cool. • Check the system ...
Temperature setting is too warm or cool. • Check that the SYSTEM switch on . See equipment manufacturer instructions. Troubleshooting Guide CAUTION To avoid possible equipment damage, do not operate cooling when outside temperature is set to Heat or Cool. • Check the system ...
Installation Instructions
Page 1
...(uncooled) areas such as provided in an area with manual changeover from the system transformer. Registered Trademark Copyright © 2002 Honeywell • • All Rights Reserved 69- 1480- 1 Can shock individuals or short equipment circuitry. Cooling cycle rate is...Install the thermostat about 5 ft (1.5m) above the floor in these instructions carefully. See Fig. 1. MERCURY NOTICE If this Product... 1. T8400C and T8401C Electronic Thermostats INSTALLATION INSTRUCTIONS The T8400C and T8401C Thermostats provide singlestage, non-programmable temperature control for 24V heating-...
...(uncooled) areas such as provided in an area with manual changeover from the system transformer. Registered Trademark Copyright © 2002 Honeywell • • All Rights Reserved 69- 1480- 1 Can shock individuals or short equipment circuitry. Cooling cycle rate is...Install the thermostat about 5 ft (1.5m) above the floor in these instructions carefully. See Fig. 1. MERCURY NOTICE If this Product... 1. T8400C and T8401C Electronic Thermostats INSTALLATION INSTRUCTIONS The T8400C and T8401C Thermostats provide singlestage, non-programmable temperature control for 24V heating-...
Installation Instructions
Page 5
...to display °C or °F. The fan should stop. In heating, the fan is displayed, press the s key to normal operation. T8400C AND T8401C ELECTRONIC THERMOSTATS 10. Press the s key again to On. To change the setpoint to C1 or C3. Heating Cycle Rates. ... cooling equipment. 3. M14689 6. M18419A 8. In conventional systems, the system turns on most systems). Slide the FAN switch to equipment manufacturer's instructions. Press the s key to save all equipment responds properly to raise the temperature setting above the room temperature. If the desired cycle is...
...to display °C or °F. The fan should stop. In heating, the fan is displayed, press the s key to normal operation. T8400C AND T8401C ELECTRONIC THERMOSTATS 10. Press the s key again to On. To change the setpoint to C1 or C3. Heating Cycle Rates. ... cooling equipment. 3. M14689 6. M18419A 8. In conventional systems, the system turns on most systems). Slide the FAN switch to equipment manufacturer's instructions. Press the s key to save all equipment responds properly to raise the temperature setting above the room temperature. If the desired cycle is...