Wiring in a RF Thermistat to a Combi Boiler

[DarrenBolton]

Hi all, looking for abit of advice.

I've just purchased a Salus RT500RF thermistat to wire into my Halstead Ace combi boiler and would just like some general advice getting my head round the wiring diagrams.

I can under stand that the RF receiver needs to go across connections L1 and L3, so that it then control when the power is given.

Whats got me confused is the instructions in the RF manual regarding either 230v or volt free. Can someone enlighten me on this please and point me in the right direction of what I need to connect where.

Boiler: http://www.halsteadboilers.co.uk/pdfs/install/AceAceHigh.pdf page 19 and page 26

Thermistat http://www.salus-tech.com/manuals/RT500RF.pdf page 3

 

[GaryMo]

Remove the link in the thermostat which goes from L to C as you're going to use the volt free option.
Remove the link in the boiler which goes between L1 and L3.

You'll need a 230v supply from the boiler to L and N in the thermostat, connect C to L1 of the boiler and NO to L3 of the boiler.


Boiler - L - L - Thermostat
Boiler - N - N - Thermostat
Boiler - L1 - C - Thermostat
Boiler - L3 - NO - Thermostat

 

[DarrenBolton]

Thank you for the reply. Really Appreciated.

Just to Clarify

Boiler - L1 - C - Thermostat, that represents the COM - Volt free connection

 

[GaryMo]

Sorry, C is COM.

 

[DarrenBolton]

great stuff always best to confirm.

Thanks for your help.

 

[GaryMo]

My pleasure.

 

[DarrenBolton]

one more thing, a four core should be fine for wiring this in?

Thanks again

 

[plugwash]

you need four current carrying cores. You MUST NOT use a core that is colored for earth for anything other than earth. So if you use a single peice of flex it will probablly have to be 5 core.

 

[gas4you]

Don't forget that any flex terminating in the boiler must be heat resistant (85C)