hot water cyclinder

  1. A

    Heating system water hammer

    Getting water hammer when motorised 2 port Honeywell turns hot water off to the cylinder. Valve works fine and its the right way. System been in for years and its just started happing. Boiler pump keeps running which is correct to dissipate the heat but as soon as the hive turns the hot water...
    • Adam a
    • Thread
    • abv boiler cental heating heating heating and hot water honeywell 42005748-001 hot water cyclinder water hammer y system vented
    • Replies: 4
    • Forum: Plumbing and Central Heating
  2. G

    Room thermostat to call pump only

    I've moved into a house with very basic central heating controls (one of those timer dials from the 80s) and non traditional piping set up which is causing some complications and I want to do the minimum work at the minute to modernise it. The way they've piped up the house the boiler sits...
    • glnovice90
    • Thread
    • 2 channel boiler boiler control central heating hot water cyclinder pressure boost pump temperature thermostat wiring
    • Replies: 27
    • Forum: Plumbing and Central Heating
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