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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#1
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Wiring a room thermostat to a combi boiler
I have a Ravenheat Whiter Star LS 80 boiler and all bar one of my
radiators have TRVs fitted. I have recently purchased a Horstmann 099A programmable room thermostat to fit to the system to give me more control but I'm having trouble understanding how to wire it. The diagram on the Horstman RT has three terminals COM, NC and NO. The diagram is laid out as follows: Live - COM - NO (it says in most cases NO but can be NC?) - boiler, Neutral - boiler. The boiler instructions are pretty pathetic, and just show 2 wires coming out of a terminal block and going off to a room stat. No live or neutral marked on the diagram? I'd be grateful if anyone could tell me how to connect this up. Also, what gauge of wire is best to use. Thanks in anticipation |
#3
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Wiring a room thermostat to a combi boiler
Thanks for that John.
There isn't a stat already fitted so sounds like I can just connect COM and NO to the two boiler terminals. What gauge wiring would you suggest I get to connect boiler to stat. Cheers |
#4
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Wiring a room thermostat to a combi boiler
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#5
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Wiring a room thermostat to a combi boiler
Thanks, will let you know how I get on.
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#6
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Wiring a room thermostat to a combi boiler
wrote:
Thanks, will let you know how I get on. And if you want to future proof the install a little use some three core and earth cable. That way you have a spare wire should you need a neutral in the future! -- Cheers, John. /================================================== ===============\ | Internode Ltd - http://www.internode.co.uk | |-----------------------------------------------------------------| | John Rumm - john(at)internode(dot)co(dot)uk | \================================================= ================/ |
#7
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Wiring a room thermostat to a combi boiler
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#8
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Wiring a room thermostat to a combi boiler
On Fri, 17 Mar 2006 19:26:08 +0000, John White wrote:
wrote: Thanks, will let you know how I get on. Don't forget to get "Part P" permission first :-) John John White, Electrical Contractor LOL |
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