I have a potterton pro max sl boiler with a Honeywell timer unit and a wired thermostat

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I am wanting to know can I not just run the wireless thermostat for the heating and leave my timer on to control the Water? Was hoping to just swap the old t3 Honeywell home unit out and fit the Tado wireless starter unit? As the wiring to the old Honeywell timer is all over and doesn’t match any pictures I can see?

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  • policywonk
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    Here is a link to the installation guide for that boiler.https://www.potterton.co.uk/-/media/websites/pottertonuk/files/technical-advice/promax_sl__installation_guide_2016.pdf
    Look at page 15. It gives the wiring diagram to fit a timer. Use that to wire the starter kit and the thermostat.
    Come back if you have problems understanding how to get the wiring right