coalkirk wrote:Is there a backflow preventer in the domestic water feed to this boiler? Also if you shut off the domestic feed to the boiler, does the pressure in the boiler system drop?
drzbob wrote:coalkirk; no water feed on the boiler but in the house. The only connections to house are the 2 pex pipes (hot in and cold out) and a power line. No thermostat wire or anything else. And not in the pic ( top side ) but on the right side of pump wall is the water feed with a new backflow preventer. bob
I believe what *coalkirk* is trying to find out w/ valving off the water feed
to the system
is, does the pressure go zero and stay zero???
Hence, there is a leak, (or maybe not)...somewhere...because there would be no make-up water available.
This should be the very first mystery
that gets solved before moving on.
If a leak was not
detected...the search is over...if a leak was detected, then it needs pin-pointed by a process of elimination by various isolating methods.