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Taco isolated end switch wiring help

adavis
Member Posts: 11
I am installing a taco SR502 Switching relay connected to a crown phantom boiler for a 2 zone radiant floor heating system. All thermostats and zone pumps are connected to the switching relay. The taco end switch terminals are marked X X which would be wired into TT on the aqua stat. but the low voltage terminal board on the crown boiler are marked Heat T'stat R W C, how would I wire X X into this boiler labeled RWC to fire the boiler during a heat call .
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Comments
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Does it matter which wire goes to X X,
X X XX
RW WR
Thank you for your time0 -
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The XX are cold terminals, doesn't matter. Half the people are missing C wires, the other half have them and don't need them!
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You're welcome.Bob Boan
You can choose to do what you want, but you cannot choose the consequences.0 -
Thank you Robert O'Brien0
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