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Secure HRT4-B User And Installation Instructions Manual page 10

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N.B. The wall plate must not be
altered or modified as it has been
specially designed to isolate the
mains supply when the thermostat
is removed to change the batteries.
Remove the old batteries and replace them with two
new AAA size alkaline batteries ensuring that they are
fitted correctly as indicated by the terminal markings in
the battery compartments.
Please dispose of old batteries
responsibly
Once the batteries are fitted, re-fit the
thermostat to the wall plate by engaging with
the lugs at the top of the wall plate and push
the thermostat into position. Locate it over the captive
screws at the base of the wall plate and tighten so that
the thermostat is locked into position. Check the
temperature setting is correct and adjust if necessary.
9

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