In most cases the 3 volt lithium battery does not need replacing if the
thermostat has a continual power supply. Its sole purpose is to ensure correct
time keeping during a power loss to the thermostat.
To remove the battery use a small at head screw driver or ngertip to push
back the brass retaining bracket. This will automatically release the battery.
Insert the new battery (positive side up!) by locating one end underneath
the holding clips then pushing down on the opposite end against the brass
holding bracket.
Holding clips
Brass retaining bracket
We advise that replacement of the lithium battery be
carried out by a qualied professional.
44
Replacing the Battery
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