Boiler Control for Primary/Secondary System Recommendation?

PilotPat24 · November 2022

Hi Guys,

What boiler control would you recommend for a cast iron gas boiler? Here's what it would need to control...

(1) Circulator for Primary Loop

(2) Circulators for Radiant Floor Heat.
(1) Circulator for a cast iron radiator.
(1) Circulator for a Priority Indirect DHW Heater.

Any suggestions would be greatly appreciated.

Thanks,

Pat

Big Ed_4 · November 2022

Any panel relay with a end switch .

GGross · November 2022

I have been stuck on Caleffi for a long time

https://www.supplyhouse.com/Caleffi-ZSR104-4-Zone-Expandable-Switching-Relay-w-Priority?utm_source=google_ad&utm_medium=search_sku&utm_campaign=SKU_API_Heating&gclid=Cj0KCQiAsdKbBhDHARIsANJ6-jeCbvO1OId8hdZ4Ou-FgXfdvNwYB_C0fLSdolLBhyAlVaFnpJaJRyIaAiGhEALw_wcB

PilotPat24 · November 2022

Thanks for both of the suggestions guys!

EdTheHeaterMan · November 2022

Are you sure you will never need another zone? then get a 4 zone relay with priority for DHW zone like Taco SR504. But I would suggest a SR506 in case you need to add a zone or if a part of the relay fails, you have extra space.

Other brands also will work.

Boiler Control for Primary/Secondary System Recommendation?

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