recirculating

Had a service call on a Rinnai RUC98i with a wilo recirculating pump that wasn’t working. Dedicated recirculating loop. Checked the dip switches on the tankless and it was configured properly. Redid the wire nuts and the pump kicked on. Pump failed to operate more than the day. Any tips or...

We went through a major remodel where a lot of walls came down, plumbing was redone in multiple locations, new PEX was run almost everywhere. We asked for recirculation for instant hot water and have a recirculating water heater Navian npe-240a2. Shower is about 30 feet from the water heater...

Good day everyone. I read somewhere that the GPM on a dedicated 3/4" return line should not exceed 1 GPM. Is there any validity to that statement? My return line is at 4.7 GPM. The total length of the line is +- 120 linear feet, connected to NPE210A. 80% of it is a straight shot along the...

Just installed a Rinnai RU180i that has circ-logic, but requires an external pump. I can’t find the pump that works with this unit and one that will work with a crossover valve as I don’t have a dedicated return. They offer a GTK03 and GTK15, but neither seem to say they are compatible and...

Hi all, I'm in the final stages of building my own home in Bowie, Texas, and I have an opportunity to plumb the house with hot water recirculation lines, but I have a question about that. My water heater (propane tankless -- I'm open to suggestions) will be located in a room in the corner of...

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 position. This started a few weeks ago. Cleaned the water filters. Everything else seems to be in working...