Central heating timers
Advice on how to use heating controls.
A combination boiler only heats up water when you turn on a hot tap, so you don’t need to programme it. If you have a hot water cylinder however, the water in the cylinder will need to be heated up during the course of the day.
In most cases the functions on your programmer are:
- Auto’ or ‘Twice’ means the heating goes on and off during the day at the times it has been programmed to do so
- ‘24hrs’ or ‘On’ means the heating stays on all the time
- ‘Off’ means the heating will remain off all the time
- ‘All day’ or ‘Once’, means the heating will switch on at the first ‘on’ setting you have programmed and then remain on until the last ‘off’ setting of the day
- ‘Boost’ or ‘+1hr’ switches the heating on for a one hour ‘boost’ of heat
- ‘Advance’ moves the programmer to the next ‘on’ or ‘off’ setting in the daily cycle
For more information on your particular programmer see the links below:
This is a 24 hour time switch with four switching options, along with:
- Boost & advance
- Holiday mode
- Automatic summer/winter time change
- Built-in standard programme - 3 on/off settings
The Horstmann CentaurPlus C17 timeswitch will allow:
- up to 3 ON/OFF settings per day for each day of the week
- has a 1 hour manual boost
- advance button to temporarily override current settings
- a programming switch allowing permanent selection of OFF/ON/AUTO/ALL DAY.