Quick question about a CH-240 Navien combi boiler. Do they have the ability to keep the heating side loop warm on their own or are they strictly on demand like the domestic side is? I've hear that some of the newer models will keep a loop hot but this particular one seems to require an input from at least a zone valve.

Posted by Deleted (7dc01a66) at 2021-03-05 22:06:23 UTC