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Zone valves on indirects?
Why is it that the general consensus is to use a dedicated circulator for an indirect, ever on a zone valve job? Isnt the point of using valves that you can have one (really good ECM) circulator?
Most boilers I install have two relay outputs one for CH and one for DHW. I've just jumped them together and used it as a single output to run the boiler circulator and valves for the zones and the indirect, end switches connected to the appropriate TT and DHW inputs on the boiler.
No problems, but this it not covered in the wireing diagrams, nor ever it is mentioned to only use one circ and valves.
Curious as to why, and if this is considered poor practice?
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