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Location of Spirovent/ H20 feed when using a LLH .. what about purging the system?
My previous old house restorations have all used radiators --- So I have always used Buderious CI boilers and followed the basic "pumping away" layout. My new house is all new floor radiant. Viessmann wall boiler w/ Indirect using the Viessmann LLH ...... there does not seem to be a single spot that everybody uses for the Spirovent and water feed. Viessmann seems to shows them together on the hot out-feed of the LLH to the manifolds .. so w/o any advise countering this .... my plan was to do it that way with the H20 feed using the lower tap of the Spirovent.
Purging the system is another question -- the nice thing about "pumping away" is with a 1 1/4 valve prior to the Spirovent and a 3/4 purge valve with hose fitting prior to the 1 1/4 valve -- it was an easy thing to close the 1 1/4 and use the H2o feed to purge the whole system back out through the 3/4 and hose. Opening and closing each manifold one after another
How do you purge a system with a LLH