pencil or small screwdriver to move the switch to the ON position (see figure at right). Leave the battery out of the thermo- stat for at least two minutes, to allow the thermostat to reset itself. DO NOT MOVE ANY OTHER OPTION SWITCH, as it may affect thermostat operation. Replace the battery, put the thermostat back on the wall, and restore 24 VAC power. To set the ther- mostat for automatic changeover after pro-
gramming, press | SYSTEM | to set the ther- |
SWITCH |
mostat to AUTO (the setpoint display is blank in the AUTO mode). The system will now automatically switch between heating and cooling depending on the actual room temperature.
Automatic Changeover (ON)
ON
1 2 3 4
Switch #1 set at installation (DO NOT CHANGE) Switch #2 set at installation (DO NOT CHANGE) Switch #3 set at installation (DO NOT CHANGE) Switch #4 ON
In the AUTO mode, the thermostat will not allow the temperature separation between the high- est heat setting and the lowest cool setting to be less than 1°F. For example, if the highest heat setting is 76°F, the lowest cool setting cannot be below 77°F (see diagram below).
79COOLING TEMPERATURES
77 |
| DEAD BAND 1°F | |
76 |
| ||
|
| ||
75 | HEATING TEMPERATURES | ||
74 | |||
|
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