DIY Home Improvement Forum banner


  1. HVAC
    I am looking to upgrade 3 old Honeywell relays that control the hydronic circulator pumps on my boiler. Pictured Here The problem with the current setup is the need for a common wire to power my smart thermostats. They are power robbing from one another and so I purchased a SR504-EXP-4 which...
  2. HVAC
    Forced hot water system Burnham when reaches temperature and shuts off Taco switch needs to be thrown back and forth for boiler to go back on
  3. HVAC
    I have a hot water boiler heating system in my basement. I have a supply line with a gate valve, then a pressure reducing valve with fast fill. This goes to another gate valve right by the boiler except this gate valve is a 3 way. One way the supply line comes in from the PRV, another way goes...