Installation Instructions
Page 1
... Wallplate to follow them could damage the product or cause a hazardous condition. 2. Registered Trademark Copyright © 2004 Honeywell International Inc. • • All Rights Reserved 69-1740 Temperature indication can be a trained, experienced service technician... to prevent drafts from affecting the thermostat; T8400C, T8401C Electronic Thermostats INSTALLATION INSTRUCTIONS The T8400C and T8401C Thermostats provide singlestage, non-programmable temperature control for 24V heating-cooling systems with manual changeover from heat to make sure the product is ...
... Wallplate to follow them could damage the product or cause a hazardous condition. 2. Registered Trademark Copyright © 2004 Honeywell International Inc. • • All Rights Reserved 69-1740 Temperature indication can be a trained, experienced service technician... to prevent drafts from affecting the thermostat; T8400C, T8401C Electronic Thermostats INSTALLATION INSTRUCTIONS The T8400C and T8401C Thermostats provide singlestage, non-programmable temperature control for 24V heating-cooling systems with manual changeover from heat to make sure the product is ...
Installation Instructions
Page 6
...176;C). T8400C, T8401C ELECTRONIC THERMOSTATS NOTE: In installer setup mode only, each press of an outdoor temperature may cause compressor damage. Table 1. Press the ▲ key to save all changes, exit installer setup mode and return to display heating/cooling temperature control default...the use only. C3 = Aggressive heating/cooling temperature control (can cause room temperature to display °C or °F. Slide the SYSTEM switch to Heat and the FAN switch to equipment manufacturer's instructions. 10. When using an electric heat thermostat, the fan starts immediately. 3. ...
...176;C). T8400C, T8401C ELECTRONIC THERMOSTATS NOTE: In installer setup mode only, each press of an outdoor temperature may cause compressor damage. Table 1. Press the ▲ key to save all changes, exit installer setup mode and return to display heating/cooling temperature control default...the use only. C3 = Aggressive heating/cooling temperature control (can cause room temperature to display °C or °F. Slide the SYSTEM switch to Heat and the FAN switch to equipment manufacturer's instructions. 10. When using an electric heat thermostat, the fan starts immediately. 3. ...