Installing circulator to boiler

kinghoward · September 1

External circulator to supply water to boiler in residence. Its a smaller Taco pump , one of the options recomme ded in the install manual. I want to mount the pump in an orange pex line either a foot away from boiler vertically, or three feet away horizo tally. I am concerned about weight on the pex pipe, I think its too much weight. I can build supports but any ideas or comments are welcome

EdTheHeaterMan · September 1

Use hard pipes or copper from the boiler to the pump location. That should be enough to hold the pump in place. Don't ever put a pump, or any other hydronic accessory like air scoops or flow check valves between 2 pieces of PEX tubing. It is not designed to support the weight of anything. You will surely see sagging and eventually develop a leak or even separation of the PEX from the fitting it is attached to, over time. Besides it looks so amateur and screams "I have no idea what the H*** I'm doing"

EBEBRATT-Ed · September 1

Or use black pipe nipples on each side of the pump. Use split ring pipe hangers with 3/8 threaded rod with nuts and F & M plates (ceiling flanges) to mount the pump to something substantial

hot_rod · September 1

A pump to supply water to a boiler? Circulator pumps mainly circulate water in a closed loop system. What type of boiler is this? Any pictures?

kinghoward · September 1

Hot_rod: Rianni residence boiler, there is no circulator in the boiler cabinet, so install manual shows an external pump going into boiler. Water comes from a spaced-T to the boiler then back to a loop circulating throughout the house. I hope this makes sense now. I forgot the model number, I beleive it is 90k btu boiler, condensing type. We are replacing the Weil McClain boiler.