Resideo HPSR10 switching relay panel
What is the purpose of the boiler terminals ? Do they send 24vac to the boiler plug-in relay to activate the boiler or are they a continuity contact? Thanks
Comments
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Boiler terminals are dry contacts and are just a switch to turn the boiler on. anytime one of the zones call for heat the switch closes sending voltage back to the boiler circuit.
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Thanks pedmec. That will help alot.
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To be just a little more clear
Boiler terminals are dry contacts and are just a switch to turn the boiler on. anytime one of the zones call for heat the switch closes allowing voltage to go back to the boiler circuit.
But I think you got the point
Edward Young Retired
After you make that expensive repair and you still have the same problem, What will you check next?
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Yes, thanks for the help. I have been looking on line for information on this. Should have looked for the experts here first.
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Hello egnuol,
Installation Instruction manuals here if you need more information.
https://www.resideo.com/us/en/pro/products/water/hydronic-solutions/controls/four-zone-switching-relay-120-vac-1ph-hpsr104-u/#resources
https://digitalassets.resideo.com/damroot/Original/10014/33-00349EF.pdf
https://digitalassets.resideo.com/damroot/Original/10014/33-00331EF.pdfNational - U.S. Gas Boiler 45+ Years Old
Steam 300 SQ. FT. - EDR 347
One Pipe System0 -
Thanks 109. I wasn't sure about the boiler and end switch purposes.
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