Hydronic Heat Boiler Electrical Supply

[nkachur]

OK, quick question.

Was running the electrical for my boiler and circulating pump.

3 ga RW90 for the supply wires for the boiler (70 amps)
14 ga RW90 for the pump and pump control wiring (15 amp)
started running rigid PVC for the RW90 and I feel like I am maybe pushing my luck.

Is there a problem with rigid PVC conduit when installed in the proximity of the waterlines of a hydronic (in floor heat) system.

 

[nkachur]

Here is the first piece I installed that prompted this question.

 

[Highbeam]

Sorry, no answer to your electrical question other than it seems folks use the metal clad flexible conduit from the box to the pump. I like your simple radiant layout. Any reason you used black iron instead of copper or even pex?

 

[theoldwizard1]

Here is the first piece I installed that prompted this question.

I don't understand your concern withe the conduit ?

It is odd to see galvanized (I can't believe it is black iron) mixed in with copper on such a short run.

You ABSOLUTELY need dielectric unions where the galvanized meets the copper ! Maybe those are dielectric unions, but the one is in the wrong place. If not you will get corrosion and quick !