Wiring open therm stat

[Deleted member 120897]

Can you explain more please. Thanks

I’m thinking the thermostat might start misbehaving.

 

[IND_Nick]

I’m thinking the thermostat might start misbehaving.

Yeah I believe the 240V could cause an induced voltage in the Low Volt open therm, causing mixed signals etc. The sparkies I work with won't run anything low voltage, Cat 6/ alarm etc in same runs as socket/lighting cable as it can cause the same problems apparently.

 

[ShaunCorbs]

Yep you will get it famtonly turning on / mind of its own

 

[Timmy D]

Need a minimum of 10mm spacing between low voltage and extra low voltage.

If you can find another source close by for your low voltage power, you could use existing wires for the extra low voltage back to boiler.

 

[Brian D]

Recently wired two open therm stats using 5 core. Not had any communication issues at all.

 

[Lou]

(Just bumping a few older threads, they will drop off what is new soon)

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