zone valve

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  1. A

    Mixing group conflict with Zone valve?

    hi All, can someone help me clarify following issue? is there possibility when room stat calls for heat (UFH system), it opens the zone valve, runs the manifold pump and turns on the boiler but the mixing group does not start mixing the incoming hot water and does not allow the incoming hot...
    • Artin
    • Thread
    • america forum group mixing mixing valve plumbing ufh usa valve zone zone valve
    • Replies: 5
    • Forum: UK Plumbers Forums
  2. G

    Thermostat or zone valve issue?

    Hi, Last week my central heating developed an issue and I’m struggling to figure out what has caused it. I have a combi boiler with 2 digital thermostats, one in the lounge, the other upstairs main bedroom. I have a fairly decent knowledge of plumbing and heating but From Last week the when...
  3. G

    can i use a mid position actuator to replace a zone valve actuator

    can i use a mid position actuator to replace a zone valve actuator
    • garygvl
    • Thread
    • actuator forum mid position plumbing position replace urgent valve zone zone valve
    • Replies: 10
    • Forum: UK Plumbers Forums
  4. D

    Honeywell Zone valve banging on closing

    Honeywell 4043H1056 just installed to replace ESi which was leaking. HW is banging on closing whereas ESi didn't!! Both are power opening, spring closing. HW was installed in the same direction in the return pipework. Arrow points towards the tank. Is that correct? Need another to replace my 2nd...
    • Deleted member 90647
    • Thread
    • banging forum honeywell plumbing valve zone zone valve
    • Replies: 10
    • Forum: UK Plumbers Forums
  5. A

    Expansion vessel

    If there is an unvented cylinder being installed in the loft, System boiler downstairs, how would you decide what size expansion vessel to put on the heating side and how will you configure the Pipework for heating expansion vessel in the loft. As there will be an expansion vessel in the boiler...
  6. D

    4 Small Boilers or 1 Big one??

    Hi, just bought our first house which is a georgian tereace with 3 storeys + cellar & attic. It's about 70 sq m per floor, with the ground and basement both having a 20sq m rear extension. We might turn it into flats in years to come, but for the next 6 years it will be our home. The question...
    • Deleted member 108845
    • Thread
    • boiler boilers central heating system combi design oil zone valve
    • Replies: 20
    • Forum: Plumbing Jobs | The Job-board
  7. D

    2 Port Zone Valve - Clicking

    Hi, Replaced a dead syncron motor in a Grasslin 2 port zone valve, however when connected back up & triggered by the thermostat it's now creating a constant clicking noise - caused by the actuator lever attempting to move towards the manual/open end. See this YouTube link for an example of the...
  8. J

    E9 overheat error on zone valve switch

    Hi All I have a Worcester Bosch FS 30CDI with a traditional header tank and hot water cylinder. The heating circuit is divided into 3 zones: downstairs, upstairs and the hot waterr cylinder coil all controlled by Honeywell two port valves. When the boiler is set to Max about 86deg and is...
    • Joe50
    • Thread
    • error forum overheat plumbing switch valve zone zone valve
    • Replies: 8
    • Forum: UK Plumbers Forums
  9. B

    Circulating pump for Multi zone?

    Hi guys, I’m in the process of ripping out an old one pipe system and replacing it with a two pipe, feed and return. The new system will be on two zoning valves one for upstairs and one for downstairs. Originally i wanted the system on a single stat and single zone valve... with a flow of 0.477...
  10. Inverness

    Zone valve problem boiler stays on

    hi guys, I'm only a forth year apprentice so he nice.lol My mates mums was complaining that her berating won't go off even though the time clock was off. I thought zone valve must be sticking so I replaced the head and it was going off and on like it should. But a few days later she said it's...
  11. S

    Danfoss zone valve noisy

    Combi boiler with two zones. Two port for upstairs and another for down. Zone valve is making a strange noise when heating is turned on or off at the stat (cogs grinding?) Also the rads downstairs (same noisy valve) often don’t come on. Install is less than two years old. Anyone else had issues...
  12. T

    Zone Valve Replacement Price guidance

    Hi all, I know a difficult one to answer but we have 2 HW cylinders and both have 2 zone valves. Both need replacing - one is stuck in 'on' position (so boiler is regulating temperature, not the cylinder stat) and the other stuck in 'off' position (so no hot water). Have been given a quote of...
    • TONK249
    • Thread
    • forum guidance plumbing price replacement valve zone zone valve
    • Replies: 16
    • Forum: UK Plumbers Forums
  13. P

    Timer powered and hot water zone valve works but not heating?!!

    Hi Guys, I am in the process of replacing a old vaillant thermocompact with a new ecotec plus 624. I have wired the old timer(ACL)back in as normal, permanent live to live on boiler main block and switch live to RT230 and taken link out at 24v RT. there is power to the timer and boiler as...
    • Pooly89
    • Thread
    • central heating system forum heating hot hot water not heating plumbing timer valve water works zone zone valve
    • Replies: 3
    • Forum: UK Plumbers Forums
  14. S

    zone valve leak

    I have a zone valve (220V actuator) on 28mm boiler primary loop .... and a slight leak from there. It is not leaking from either of the compression joints ... so must be coming out via the central ball valve actuator. It's a Cimberio 1" valve with 28mm compression reducers, model...
    • sargan
    • Thread
    • actuator compression forum leak plumbing these valve zone zone valve
    • Replies: 5
    • Forum: UK Plumbers Forums
  15. B

    3 Way zone valve started banging

    Hi guys, New to the forum but thought I’d best get on top of this problem I’ve been living with for a while now so require some advice please. Although a common problem can’t find the answer to my specific situation. Finished building the garage two years ago and had a new pressurised Worcester...
    • Bobert
    • Thread
    • banging fernox forum plumbing setting started system valve zone zone valve
    • Replies: 2
    • Forum: UK Plumbers Forums
  16. P

    Clicking on 2 zone valve actuator

    Hi There is a clicking sound coming from a Drayton actuator controlling the hot water. I am guessing that the clicking means that the actuator is no longer working and is trying unsuccessfully to turn the valve. Any ideas anyone Thanks Paul
  17. P

    Condo radiator zone valve troubleshooting

    Hi all, I'm trying to figure out why my zone valve doesn't full open to get the radiator pipes hot when I use the thermostat? I can manually spin the valve until I hear the hot water running through the pipes and then all is fine and the pipes get hot really fast but without manual stimulation...
    • Pepi
    • Thread
    • color forum plumbing radiator thermostat valve verdana zone zone valve
    • Replies: 3
    • Forum: UK Plumbers Forums
  18. L

    zone valve flow direction

    Hi I wonder if anybody can help with either of these 2 questions? I think the Honeywell 4043H valves in my central heating are now fitted with the flow in the opposite direction to the arrow on the valve. I say this because we had a boiler fitted a few years ago and I think the flow and...
    • Lark1
    • Thread
    • boiler direction flow forum plumbing valve valves zone zone valve
    • Replies: 6
    • Forum: UK Plumbers Forums
  19. W

    tower zone valve

    Hi, this is my first post and would love some help. I need to replace a Tower spring loaded motorised valve type TOWER VALVE MV2-22C I want to replace the complete head without having to drain down. The valve is one of the older type with a grey plastic cover. I have been told that the head on...
    • willieplumb
    • Thread
    • forum plumbing tower valve zone zone valve
    • Replies: 3
    • Forum: UK Plumbers Forums
  20. JCplumb

    zone valve stuck

    Evening gents. In a house I rent out, there's a system boiler that works fine but the heating comes on when 'water only' is selected. I guessed zone valve, so went to have a fiddle with it. After much fiddling I'm confident it's buggered, thing is I fitted this valve about 8 years ago and had...
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