How to properly use / configure Navien hydronic system
Jan 1, 2022 · Hi, Should a Navien hydronic heating system turn on and off four to five times an hour? I am living in a place with a Navien CH-240 that drives domestic hot water and an in-floor, six-zone …
Navien 240A suddenly not as hot in internal recirculating mode
Feb 28, 2024 · Works fine with recirculation off, reaches the target temperature. But feels about 20 degrees cooler when I put it in internal recirculating mode. Confirmed the dip switches and valve …
Navien NPE240A- Navilink,Navilink App, Recirculation settings And ...
Jan 15, 2020 · Navien NPE 240A— Navilink recirculation—some customer insights. I have had The Navien NPE240A for about two years now and the unit has worked flawlessly, but it has taken me a …
Tips for adjusting air/gas combustion mix in Navien CH-240
Jan 25, 2022 · With the Navien unit running while a hot water tap is fully on, the exhaust is blowing out 90% LEL gas and 121ppm CO. This CH-240 unit does not have some of the altitude-adjusting DIP …
Navien 240a external recirculation settings with thermal comfort valve ...
Sep 24, 2017 · The Navien itself is about as far away from the fixtures as possible. It's mounted outside close to the gas main in and replaced a tank water heater in the attic. With the external recirculation …
Navien 240A Revving Noise - Love Plumbing & Remodel
Jan 25, 2021 · Hello, hoping people here can help with a loud Navien 240A revving sound. Replaced two tanks that had a continuous circulation pump on dedicated copper recirculation line with a new …
Navien NCB manifold piping - Love Plumbing & Remodel
May 28, 2019 · The heat exchanger in the Navien is a water tube type with a high pumping head, and isn't designed for high flow rates, but also requires a minimum flow rate to avoid microboil on the …
Navien NCB-240 Combi Boiler - DHW is fine, NO HEAT
Oct 5, 2022 · 2/2022 Partner replaced a 1969 American standard gas boiler and dying water heater with a Navien NCB 240 Combi Boiler. Heat was fine from Feb thru April...
Controling Navien NPE internal recirculation pump
Dec 15, 2016 · Does anyone know the logic behind how Navien controls their internal recirculation pump when it is circulating with an external loop? This would be with the second dip switch in the "On" …
Navien 240A -- risks of using existing 4" venting? | Terry Love ...
Feb 8, 2023 · Navien specifies 3" max diameter for the venting. If I had the installer run 2" venting to and from the unit but then converting to the existing 4" venting above the ceiling, let's say five feet up, …