7ST620RF INSTRUCTION MANUAL
INSTALLING AND REPLACING BATTERIES
Installing or replacing the ST620RF Control Centre batteries is a
straightforward operation, but does require you to open the case of
the programmable thermostat.
To open the ST620RF case, undo the securing screw on the bottom of
the case (just to the right of the hole for the Reset Button):
After undoing the screw pull it forward until the screw stops
moving, then carefully separate the two halves of the case by gently
pulling in an upwards direction. Once the case has been separated,
the batteries should be visible:
Ensure that the batteries are inserted correctly, paying careful
attention to the polarity markings on the battery and next to the
battery holders. After inserting the batteries, refit the ST620RF case
and retighten the securing screw.
