recirc pump

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...

I live in a two storey, two bedroom, two bathroom condo with hydronic heating for both floors. Heating is divided into four loops, each 300 feet long, 3/8" Pex. In case it makes any difference, I have a Bradford White combined potable/underfloor heating water heater rated at 65,000 BTU. The...

A customer has a large house and it takes a long time to deliver hot water to the farthest fixture in the house. In the past I have successfully installed the Watts (or Grundfros) Recirc pump system at the water heater. However we also want to install a mixing valve/tempering valve at the water...