Installation Instructions
Page 1
... Electronic Thermostats INSTALLATION INSTRUCTIONS The T8400C and T8401C Thermostats provide singlestage, non-programmable temperature control for 24V heating-cooling systems with the screws provided (see Wiring section. ® U.S. Heating cycle rate is selectable at 3 cph. Disconnect power supply before installation. unheated (uncooled) areas such as an outside wall behind doors and in the trash. The thermostat...
... Electronic Thermostats INSTALLATION INSTRUCTIONS The T8400C and T8401C Thermostats provide singlestage, non-programmable temperature control for 24V heating-cooling systems with the screws provided (see Wiring section. ® U.S. Heating cycle rate is selectable at 3 cph. Disconnect power supply before installation. unheated (uncooled) areas such as an outside wall behind doors and in the trash. The thermostat...
Installation Instructions
Page 4
... of T8401C in the bottom left corner of the thermostat and wallplate. 2. Mounting thermostat wallplate. FAN Switch Fan switch settings are controlled manually by the heating equipment and may start a few minutes after the heating equipment turns on (on most homes. Auto: Normal...Set Room AuFtAoNOn CooSlYOSfTf EHMeat B PRESS LOWER EDGE OF CASE TO LATCH. See Fig. 12. T8400C, T8401C ELECTRONIC THERMOSTATS G C R W B Y O 1 L1 (HOT) 24V L2 TRANSFORMER HEAT RELAY COOL RELAY FAN RELAY 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 2 CAN BE ...
... of T8401C in the bottom left corner of the thermostat and wallplate. 2. Mounting thermostat wallplate. FAN Switch Fan switch settings are controlled manually by the heating equipment and may start a few minutes after the heating equipment turns on (on most homes. Auto: Normal...Set Room AuFtAoNOn CooSlYOSfTf EHMeat B PRESS LOWER EDGE OF CASE TO LATCH. See Fig. 12. T8400C, T8401C ELECTRONIC THERMOSTATS G C R W B Y O 1 L1 (HOT) 24V L2 TRANSFORMER HEAT RELAY COOL RELAY FAN RELAY 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 2 CAN BE ...