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  1. M

    Drayton Wiser two channel replace of RWB9 Siemans Controller

    Thanks Rodders
  2. M

    Drayton Wiser two channel replace of RWB9 Siemans Controller

    Rodders53, its the 1st gen: https://www.screwfix.com/p/drayton-wiser-wireless-heating-hot-water-2-channel-thermostat-control-kit-white/9575v#product_additional_details_container
  3. M

    Drayton Wiser two channel replace of RWB9 Siemans Controller

    Thanks guys, I will double check all of this.
  4. M

    Drayton Wiser two channel replace of RWB9 Siemans Controller

    Hi, I have a convectional British Gas 300+ S-Plan system with two 2-port zone valves, currently controlled by a Siemens RWB9. I plan to replace the controller with a DRAYTON WISER WIRELESS HEATING & HOT WATER 2-CHANNEL THERMOSTAT CONTROL KIT. I have attached a pic of the old wiring backplate...
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