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    Honeywell V4073A mid position valve

    Thanks for advice guys, short, succinct and to the point ! True professionals
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    Honeywell V4073A mid position valve

    Hi guys, Not sure if this is a daft question, but hopefully someone can advise me anyway. I have recently installed a Drayton programmer LP522 and a motorised Honeywell valve V4073a mid position valve, into a Y plan heating set up. Everything seems to be working ok, hot water, heating...
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    Heating system circulation problem

    D-Halisham wrote Definitely in mWS, changed pump speed no effect but when there was air in the system the reading dropped every time air passed through.
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    Heating system circulation problem

    Hi Guys, The heating system has improved dramatically, apart from 1 rad now, every rad is hot though I've done nothing. The F&E tank is full and there is no underground heater pipes but thanks for idea anyway. The boiler thermometer is fixed into the 28 mm pipework before the pump, but there...
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    Heating system circulation problem

    Softus I've just checked this and find I have 4 posts, one which is locked and cannot be used and this current one. In my work, Project management, I have to double everything to bring projects in on cost and time, I didn't think plumbers did the same !. Seriously, I appreciate your...
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    Heating system circulation problem

    Tiny bit of black sediment at start but clean water mostly. The water flow rate was very erratic though, less so when I reversed the flow, but still doesnt seem to be as strong as the mains input flow.
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    Heating system circulation problem

    Guys, Thanks for your ideas. Softus - sorry about confusion , but I've had several problems with the heating system over the last 6 months and wasn't sure how to reopen old topics. Today I used mains water to flush out the pipework from the boiler output to the furthest rad input. The drained...
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    Heating system circulation problem

    Hi Guys, Status so far: Only 2 rads now hot ( both nearest to boiler). Rest cold Boiler temp 75C at pump. Pump seems to be running ok. pics can be found if you search under my name , see link below. F&E tank full, cleaned out 3 months ago month prior to adding Sentinal X400 for a month. Its...
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    Heating system circulation problem

    Thanks Tryitandsee, I might try and reverse the pump ( was that JohnD's idea to try and clear airlocks ?)'and check gates same time. By the way didn't get a chance to thank you JohnD for you suggestion with a previous problem on controlling cylinder flow to help improve rad heating. I put a 2...
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    Heating system circulation problem

    Thanks guys for interest, The heating engineer that serviced the boiler last year came out yesterday and shut off the jammed Bypass valve. ( JohnD's query) He could not sort the circulation problem out, said the boiler was old and needed replacing. (He said that last year as well, thats why I...
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    Heating system circulation problem

    Thanks for reply Softus. Yes, I've bled the pump after replacing. I thought this pump ( 25-60) would be more powerful than the 15-60 that it replaced. Its on highest setting (3). Its probably the boiler. Its over 20 years old. The temp gauge on the pump boiler side shows about 70C when the...
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    Heating system circulation problem

    Hi Guys I'm at my wits end in trying to sort out my heating system. Its a very old Oil boiler (Ideal Falcon 2 for whats it worth ), housed in a shed near the house, feeding about 12 rads (cylinder is fed currently from a solid fuel stove). Upstairs rads get pretty hot, downstairs warmish but...
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    Oil boiler Thermostat problem

    PS No TRV's etc, its a very old simple system simply feeding C?h and cylinder together, with only control appears to be room stat and boiler stat.
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    Oil boiler Thermostat problem

    Hi Terry, Boiler is in a shed near the house. Its not gravity fed but runs the C/H via a pump, 12 rads mostly on TRV's , with a cylinder at the end of the run ( Historic reasons since the cylinder can also be fed from a stove as well ). You cannot have hot water seperately. The pump comes on...
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    Oil boiler Thermostat problem

    Hi, I've inherited an old oil boiler, must be 20 years + old, Falcon Series 2, (Stelrad Group), that's just developed problem with the boiler thermostat. ( at least I think its this ). The central heating was previously causing problems with some rads being cooler than others, but thanks to...
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    Radiators- Upstairs hot/Downstairs mostly cold

    Thanks for that i'll check it out
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    Radiators- Upstairs hot/Downstairs mostly cold

    Thanks for reply and advice JohnD, The Boiler & Pump is controlled from a programmer, with a thermostat switching boiler off when it reached temp. Any idea why 3 radiators have poor performance (all downstairs, and have been disconnected and flushed out) ? Also why is there a pipe from the...
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    Radiators- Upstairs hot/Downstairs mostly cold

    Thanks JohnD for web link to photos Photos as follows:
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    Radiators- Upstairs hot/Downstairs mostly cold

    There does not appear to be a thermostat on the hotwater cylinder, neither are there 3way valves ( no wiring apart from immersion heater). I presume is set to the boiler temp which switches on & off till it reaches the boiler setting. The system is over 20 years old, we've moved here about 3...
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    Radiators- Upstairs hot/Downstairs mostly cold

    Where is the bypass likely to be, near the boiler? What will it look like ? I can't follow the heating pipework due to it being layed under 1st floor, covered by boards and carpet, but it seems to end furthest from the boiler at the hotwater tank, which is fed from 28 or 22mm pipe which is very...
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