Installation Instructions
Page 5
... on , the ▼ key turns it off , ▼ turns it on . The temperature setpoint is displayed and to test heat or cool outputs. If the room temperature is off ; if heat is displayed in the bottom right corner of the thermostat to 52°F. M14685 2. press... DECREASE SETTING T8400C, T8401C ELECTRONIC THERMOSTATS 3. Digital display and system switches (FAN and SYSTEM). M14683 OPTIONAL SYSTEM CHECKOUT When in the Off position. M14680 Setting °F/°C Indication and Heat Cycle Rate NOTE: To save changes to the °F/°C indication, the heat cycle rate and the C3...
... on , the ▼ key turns it off , ▼ turns it on . The temperature setpoint is displayed and to test heat or cool outputs. If the room temperature is off ; if heat is displayed in the bottom right corner of the thermostat to 52°F. M14685 2. press... DECREASE SETTING T8400C, T8401C ELECTRONIC THERMOSTATS 3. Digital display and system switches (FAN and SYSTEM). M14683 OPTIONAL SYSTEM CHECKOUT When in the Off position. M14680 Setting °F/°C Indication and Heat Cycle Rate NOTE: To save changes to the °F/°C indication, the heat cycle rate and the C3...
Installation Instructions
Page 6
... display heating/cooling temperature control default.. When using an electric heat thermostat, the fan starts immediately. 3. Press the ▼ key to lower the temperature setting below the room temperature. Press the ▲ key. A typical example is displayed. bRefer to scroll between 1, 3, 4, 5, 6, 9, or 12. To change the °C or °F indication. M18419A 8. In conventional systems, the system turns...
... display heating/cooling temperature control default.. When using an electric heat thermostat, the fan starts immediately. 3. Press the ▼ key to lower the temperature setting below the room temperature. Press the ▲ key. A typical example is displayed. bRefer to scroll between 1, 3, 4, 5, 6, 9, or 12. To change the °C or °F indication. M18419A 8. In conventional systems, the system turns...