Get a low pressure (0-3 psi), gauge from Valworx, and verify the pressuretrol is cutting out at setpoint.
2.5 psi can push the water level in the wet returns up 70 inches, temporarily starving the bo… (View Post)
When our old American Standard boiler rusted through, and we installed a Peerless 211A, (1,050,000), there was a check valve in the wet return, which we determined should not be there, and removed it… (View Post)
A quick rule of thumb would be to order one big mouth vent for each branch, (biggest bang for the buck), as well as a low pressure gauge.
Put the Big Mouths on their correct locations, and the gauge … (View Post)
I would use a Honeywell VisionPro thermostat down in the boiler rom, where it is easier to wire it up properly, and it’s remote sensor, whether wireless, or wired (only 2 wires needed), could be put … (View Post)