Owner's Manual
Page 2
... a more comfortable and convenient living environment. • Simple and easy to change your temperature settings are not required because your temperature setting. • Large digital display. The ▲ and ▼ keys make it easy for batteries. Congratulations on the purchase of this thermostat in memory. 69-1490 2 Over 100 years of...
... a more comfortable and convenient living environment. • Simple and easy to change your temperature settings are not required because your temperature setting. • Large digital display. The ▲ and ▼ keys make it easy for batteries. Congratulations on the purchase of this thermostat in memory. 69-1490 2 Over 100 years of...
Owner's Manual
Page 4
Digital display shows a snowflake when cooling is on. Em. Then set the SYSTEM switch: Cool: Normal setting for months when your home needs heating. Heat: Normal setting for months when your equipment has failed or is not working properly. Digital display shows a flame when heating is on all models.) Switch to this setting when your home needs heat, but your home needs cooling (air conditioning). SYSTEM Cool Off Heat Em.Ht. SYSTEM SWITCH M10274 69-1490 4 Ht.: (Not available on . Off: Both heating and cooling are off.
Digital display shows a snowflake when cooling is on. Em. Then set the SYSTEM switch: Cool: Normal setting for months when your home needs heating. Heat: Normal setting for months when your equipment has failed or is not working properly. Digital display shows a flame when heating is on all models.) Switch to this setting when your home needs heat, but your home needs cooling (air conditioning). SYSTEM Cool Off Heat Em.Ht. SYSTEM SWITCH M10274 69-1490 4 Ht.: (Not available on . Off: Both heating and cooling are off.
Owner's Manual
Page 6
Displaying Temperature Setting NOTE: Your temperature setting can be set anywhere from 40° to 99°F (5° to Room when the room temperature is displayed. 1. The temperature setting and the room temperature are shown separately on the digital display, press either the ▲ or ▼ key once. To display the temperature setting on the digital display. Set Room INDICATOR M18441 69-1490 6 The ▼ indicator points to Set when the temperature setting is displayed and to 37°C).
Displaying Temperature Setting NOTE: Your temperature setting can be set anywhere from 40° to 99°F (5° to Room when the room temperature is displayed. 1. The temperature setting and the room temperature are shown separately on the digital display, press either the ▲ or ▼ key once. To display the temperature setting on the digital display. Set Room INDICATOR M18441 69-1490 6 The ▼ indicator points to Set when the temperature setting is displayed and to 37°C).
Installation Instructions
Page 4
...the st keys simultaneously for approxi-mately five seconds as follows: Cool: The thermostat controls the cooling system. Each press of the s key momentarily displays 01. To increase the temperature setpoint press the s key. Each press changes the setpoint one degree; If the room temperature is off, t...separately on , t key turns it on and off ; M14684 System setting at HEAT: If heat is off, t turns it off . T8400C AND T8401C ELECTRONIC THERMOSTATS Slide the FAN switch in the lower right corner of the thermostat to select the desired system setting. The t indicator ...
...the st keys simultaneously for approxi-mately five seconds as follows: Cool: The thermostat controls the cooling system. Each press of the s key momentarily displays 01. To increase the temperature setpoint press the s key. Each press changes the setpoint one degree; If the room temperature is off, t...separately on , t key turns it on and off ; M14684 System setting at HEAT: If heat is off, t turns it off . T8400C AND T8401C ELECTRONIC THERMOSTATS Slide the FAN switch in the lower right corner of the thermostat to select the desired system setting. The t indicator ...
Installation Instructions
Page 5
...: To bypass the 5 minute delay, see the Optional System Checkout section. This information is below the room temperature. T8400C AND T8401C ELECTRONIC THERMOSTATS 10. NOTE: After exiting installer setup mode, change the °C or °F indication. If the desired ... the s key to the desired room temperature. Fan 1. Press the s key to save all equipment responds properly to Auto. Factory information is displayed. A typical example is for the cycle rate options and the corresponding system equipment. Press the s key again to Auto, if available. 2....
...: To bypass the 5 minute delay, see the Optional System Checkout section. This information is below the room temperature. T8400C AND T8401C ELECTRONIC THERMOSTATS 10. NOTE: After exiting installer setup mode, change the °C or °F indication. If the desired ... the s key to the desired room temperature. Fan 1. Press the s key to save all equipment responds properly to Auto. Factory information is displayed. A typical example is for the cycle rate options and the corresponding system equipment. Press the s key again to Auto, if available. 2....
