2021年4月8日 · The tankless works fine. The water has a long way travel, probably 150 ft from the Rinnai, under the house to the 2nd story master bedroom. It serves 1 whirlpool bath, 1 regular bath with shower, one shower with 2 outlet heads and 5 faucets. Water is set to 125. Main line is 3/4", recirc line is 1/2". There's only 2 of us in the house.

2022年8月23日 · So I got my external tankless installed and the water heater out of the attic. So far, so good—very pleased with its performance. However, when I bought the unit (RU199en w/ "Circ-Logic"), I also bought a recirculation pump—the GTK03.

2012年3月26日 · With a tankless there is now lower pressure on the hot side than with the previous hot water heater, and the anti-scald may be cutting back total flow to an undesirable or unstable level. If the tankless is set to 120F or higher, try backing it off to 110F, at which point there would be almost no flow on the cold side in the first place.

2021年10月25日 · This replaced a standard tank, which also had an external circulation pump that run continuously. I purposely chose the 'A' model as I was told it had a built-in circulation pump that offered a similar experience. Anyway the new system works great except that it can take a 1+ minutes to get hot water out of the taps.

2024年2月17日 · I want to add an external record pump to my Navien NPE- 240S2. I have to use the cold water Line as a return and I’ll install the Navien Navi-Circ valve at the sink furthest away from the heater. Question. Does the NPR-240S2 have any capability to control the pump for on/off times and any other features.

2022年2月24日 · I purchased a NaviLink and to date have not been able to get the Navien Water Heater to follow the schedule. The recirculation pump will trigger every 20-30 min or when ever the temperature difference between in coming water is 9* different from set temperature. This operation consumes an enormous amount of Propane (in my case) very expensive.

2024年4月8日 · I have a Navien tankless water heater (Model: NPE-240A2(NG)) which is a little over 2 years old. I have a dedicated return line for the recirculation. About a week ago, I noticed that the hot water was taking over a minute to come instead of seconds. It seems as though the pump stopped turning on.

2021年12月26日 · The Pump Excercise feature is intended to periodically activate the pump to ensure the water will be circulated and to also ensure the pump seals will not dry out. The default Excercise setting will activate the pump for 30-seconds every 24-hours, but the activation time is adjustable to between 1-240 seconds, and the interval is ajustable to ...

2020年8月22日 · The internal mode will utilize the NPE-180A's internal pump to recirculate hot water only within the water heater. This is utilized to maintain the temperate within the 180A's internal buffer tank. Internal mode will not reduce the time needed for hot water to arrive at the home's faucets.

2024年11月2日 · 438 abnormal operation of the recirculation pump. When's the last time units been serviced along with pumping vinegar through them? 1 Check the circulation pump. 2 Check water filter for blockage. 3 Check the cold water main line 4 Check the flow sensor. 5 Set to Internal Recirculation mode and verify flow rate.