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heating system

  1. D

    Draining heating system - no water coming out

    I need to drain my heating system. I located the downstairs radiator with the drain off valve, attached a hosepipe and turned the valve...nothing comes out. I've tried this on all the downstairs radiators with drain off valve, again nothing comes out. I tried to bleed the upstairs radiators to...
  2. L

    New heating system - depressurisation

    General question to canvas some professional views please: Is it normal for a properly operating sealed system to lose pressure and need topping-up periodically? The background is that last year our house had a major renovation, including absolutely all of the plumbing (water, heating and...
  3. Farhanhaq

    Advice on old plumbing and heating system removal

    Hello, I have a commercial unit that hasn't been used for nearly 20 years. There is an old heating system and boiler in a room that powered the whole building. The system is large with a number of pipes going through out the building. I have no idea where to start with the removal of it...
  4. Stants

    upgrading / addition of Nest to heating system

    Hi I'm have a new central heating system New boiler / pressurized Cylinder 210 new mdpe main 25 mm its being done soonish ( plumbers busy at the mo ) how much more effort is needed to add a nest system or similar and what is entailed ? do you need new rad valves sensors etc. and could it be...
  5. P

    Draining radiators on a communal heating system

    Hi all, I have a small plumbing job to do for which I need to drain the radiators in my property. There are only two radiators, that are fed by a communal boiler, and pass through an immersion heater. I have already identified the isolation valves for the primary flow and the return to my...
  6. J

    Heating system question

    Can anybody tell me what this link is for on my heating system (see image with red arrow). It links just after my pump and is connected to the return after the cylinders coil. The isolation valve is cracked 3/4 of a turn.
  7. T

    Under floor heating system issue

    Hi. Hoping for some advice. Yesterday I did have an authorised tech round whom fitted a new control board and electrode/cable and my DUO TEC Compact+ 24 GA came back to life but things are not going as expected and unfortunately I am in Lithuania full time since lockdown and do not speak...
  8. S

    Corrosion problem in central heating system with standard plastic piping?

    Five years ago I had a new central heating system installed. The pipework for two of the radiators was done in plastic, running under the floorboards. Although the system was dosed with plenty of Sentinel X100 inhibitor, after about 18 months the water suddenly started to go brown, and I had to...
  9. kieran

    Change 4 zone heating system to smart thermostatic radiator valves instead?

    I've just moved into a house for the first time where I don't just have a single heating zone. This house has a central timer unit and 4 room thermostats that control 4 Honeywell V4043H1056 valves beside an currently unidentified Johnson Starley combi boiler (although there is also a hot water...
    • kieran
    • Thread
    • heating heating system radiator system thermostatic valves
    • Replies: 11
    • Forum: UK Plumbers Forums
  10. T

    Open vent heating system - Vent discharge

    Got to look at a system which is discharging out of the open vent. Any tips, hints? Gonna check f&e/pump connection locations. Pump speed. System water quality for indication of blockage. Worth cutting out the feed tee to check for blockage? Any others?
  11. E

    Airlocks and bleeding commercial heating system

    Hi My elderly mother in law lives at the top of a 7 storey block flats, and her radiator needs constant bleeding. The heating system is managed by the management company, but the plumbing in her flat is her responsibility. I am seeking advice because conversations about heating quickly move...
  12. P

    No flow in heating system.

    This is perhaps a long shot, but anyway... I live in a block of flats in Beijing, and the heating is provided by a metropolitan heating system. The block's system seem to be split into two - top 10 floors and the lower 10 floors are heated separately. My flat is on the 10th floor, and our...
  13. D

    Flush gravity fed F&E central heating system

    Forgive me is this is a stupid thought! I'm looking to flush dirty water out of an F&E system. Can I attached a hosepipe to the lowest drain off point and simply drain off water outside without turning off the water supply to the F&E tank? So my thinking is that it may take some time but...
  14. P

    Overflow pipe off heating system

    Hi Has anyone come across this small bore copper pipe that runs off the central heating. The pipe runs up to the roof space and terminates in the central heating small feed tank. It seems to act as a vent or overflow for whenever the client turns on the hot water. The coil heats the water and...
  15. S

    Single Pipe Heating system problem

    Evening guys, Replaced 2 rads recently on a single pipe system (Heat only Boiler). Both Rads identical Reina Horizontal with trv & lockshield upstairs in the house in opposite rooms. One of the rads is absolutely fine, The other isn't heating up as i have no flow on the trv side!? Called back...
  16. milleniumaire

    URGENT F.20 after refilling central heating system

    Today I partially emptied the central heating system (1st floor and loft) so that I could disconnect an old towel rail and install the pipe work ready for the new towel rail. All went well and I have two capped pipes sticking out of the wall where the new towel rail will be fitted. Having...
  17. K

    Avoiding airlocks in central heating system teeing off from the main pipework

    central heating radiators to feed upstairs and downstairs main paperwork runs in ceiling void downstairs ,need to tee off to radiators downstairs do I tee off from above or below on the main pipework to avoid airlocks
    • Kevo
    • Thread
    • central central heating heating heating system main pipework system
    • Replies: 1
    • Forum: Central Heating Forum
  18. milleniumaire

    Design For New Central Heating System

    I'm looking to expand my central heating system by adding a new bathroom UFH zone. I'm also changing the pipes feeding the loft radiators to 22mm, instead of 15mm. Early discussions with my heating engineer talked about introducing a Low Loss Header and one or more additional pumps. The...
  19. Stants

    Trouble draining Heating system

    Hi all I have an old Vented system header tank etc...... ( im very soon replacing the whole lot ) I need to move the header tank so tried to drain down the system and the Tanks not emptying put hose on downstairs Rad to drain, and water came out but I'm pretty sure all I've done is empty...
  20. Jock Spanners

    To seal a central heating system or not?

    Good morning everyone, I have a big old vicarage which needs a new regular boiler. They also want fancy mixer taps in the kitchen . They have two hot water cylinders linked together, a shower pump and curved old radiators in the bay windows. I'm agonizing over what to do. The easiest option is...

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