Search results

Well, the saga continues... Check valves installed. Went to change the parameters in the R&D and came to find out that the units are 2013 units. So, there is no parameter P17 setup available in the front panel and motherboard for these units (based on phone call with Navien tech support...

Yes, this makes sense. I'll test it out as currently configured with the 3 valves. If things don't seem to be working, I can disconnect the 2 valves closer to the WH and proceed from there with only the furthest valve connected. My hope is that with the 3 valves installed, all 3 upstairs...

My plumber checked with Navien and agrees with what we suggested. They are planning to install the check valve and adjust the settings as listed above. One last question: I put in 3 NaviCirc valves total, 1 in each upstairs bathrooms. Is this overkill? I have them already so it's not like I...

As a follow up to the check valve question, the flow diagram in the OK. Thanks again for your help. Three more questions: 1. I made some additions to the flow diagram in the 240A installation manual (pictured below) to show the configuration of the system with the navicirc valves...

This is helpful. I think I understand now. With the 2-way valve set to internal recirc mode, all it is doing is recircing within the 240A body and not going out to the Navicirc valves. The 2-way valve needs to be switched to external mode in order to actually recirc to the downstream navicirc...

Greetings. New to this forum but I saw other Navien posts on here so thought I could get some help. Here's the story: Just moved into a house and the previous homeowners had a Navien NPE 240A installed. I wanted to get it checked out (so that someone could explain to me how it worked...