Honeywell T8401C - Manuals

T8400C AND T8401C ELECTRONIC THERMOSTATS 69-1480-1 2 Fig. 1. Typical location of thermostat. Mounting Decorator Cover Plate and Wallplate to Wall IMPORTANT Level only for appearance. The thermostat func-tions normally even when not level. NOTE: Only SUPER TRADELINE® models have the cover plate. Moun...

T8400C AND T8401C ELECTRONIC THERMOSTATS 3 69-1480-1 Fig. 3. Restrict wiring to shaded area. Fig. 4. Wiring connections. Fig. 5. T8400C/T8401C heat-cool wiring diagram in single transformer system with gas heat/electric cooling. Fig. 6. T8400C/T8401C heat-cool wiring diagram in oil heating/electric ...

T8400C AND T8401C ELECTRONIC THERMOSTATS 69-1480-1 4 Slide the FAN switch in the bottom left corner of the thermostat to select the desired fan setting. SYSTEM Switch System switch settings control thermostat operation as follows: Cool: The thermostat controls the cooling system.Off: Both heating an...