Select 107 XLS User Guide Page 1 of 7
Select 107 XLS User Instructions
A timeswitch allows you to set ‘On’ and ‘Off’ time periods. The timeswitch will allow you to set the ‘On’ and
‘Off’ time periods for either Hot water or Central heating to suit your own lifestyle. On some timeswitches you
must also set whether you want the heating or hot water to run continuously, run under the chosen ‘On’ and
‘Off’ heating periods, or be permanently off.
The time on the timeswitch must be correct. Some types have to be adjusted in spring and autumn at the
changes between Greenwich Mean Time and British Summer Time.
You may be able to temporarily adjust the heating programme, for example, ‘Override’, ‘Advance’ or ‘Boost’.
These are explained in the manufacturer’s instructions.
The heating will not work if the room thermostat has switched the heating off. And, if you have a hot-water
cylinder, the water heating will not work if the cylinder thermostat detects that the hot water has reached the
correct temperature.
SELECT 107XLS
USER INSTRUCTIONS
INTRODUCTION
The SELECT 107 XLS electronic timeswitch can automatically switch ON and OFF, up to 3 times a day, at
whatever times you choose.
During installation, the installer selects 24 hour, or 5 day/2 day, or 7 day programming and 2 or 3 on/off
periods per day, via a 4 position DIP switch on the back of the unit (see installation instructions).
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