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hi,
For newer boilers with variable speed (modulated) water pumps for central heating. Should there still be bypass valve when all radiators have TRV's. Plumber saying not needed anymore.

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I had a new Vailant boiler installed 2 years ago, and the system has needed a motorised valve replaced twice and now the Onyx pump has started making an irritating and irregular high pitched squeaking noise.
Can anyone advice me what the fault could be ?

Many thanks
Jon

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Well we have tried a couple of international domain names out and the best we have ever been on was our own original UKPF.

So I took the tough decision once again to switch domains (so 3rd change in 3 years).

Apologies for any confusion. Links to any threads and forums, on either of the old domain names will work again in the next 60 minutes.

I'll sort some artwork out today too.

Thanks for your patience.

Let me know about any bugs in this thread.

Cheers
Dan

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Talking with one of the guys in the office about a mysterious boiler fault (runs, ignites, locks out) reminded me of an issue in a new boiler room some years ago. Three new gas boilers all installed at the same time, due to handover to client but one boiler kept locking out. It would go through the startup sequence, establish a flame then lock out. Each boiler had a mains inlet socket at the back with a plug and flying lead from the control panel. Looking at the backs of the boilers I...

 

Hi

I have an unvented Megaflow system, which is 10 years old. Since October last year we have had low pressure in the shower, I have had to take off the shower mixing valve every few weeks and clean out what I believe to be scale from the hot water inlet mesh (see photo attached) . The pressure then returns to normal.

The TPRV valve is slowly dripping in the tundish, even after i reset the airgap via the instructions on the front of the megaflow, could this be causing the buildup?

We...

 

For the life of me I can't work out how to remove the attached. Any advice? Cheers.

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Last year, my wife and I viewed four apartments in a block of apartments that had a district/community heating system. Each apartment therefore had a heat interface unit (HIU). It was my first experience of this type of heating and I had never seen an HIU before.

In each apartment that we viewed, I was aware of a hum in a certain area of that apartment and it appeared to be coming from the HIU. If I was not in the vicinity of the HIU, I could not hear the hum. My main query is, do all HIUs...

 

I have recently started a new job as a Facilities Manager, and one of the plumbing contractors said that he noticed an issue while he was working on a cylinder in a flat “the expansion vessel is being fed by the cold-water pipework, which includes a non-return valve between it and the cylinder, and that the non-return valve between the expansion vessel and the cylinder will render the expansion vessel ineffective, as it obstructs the necessary flow for pressure regulation?” I have contacted...

 

I was cleaning up my honey-well V8043 motors on a few of my power heads. They were working fine when I re-installed them. I checked the two wire motor leads on a few of them and was getting 26 VAC (should be 24 VAC).

One had a bad end switch so I swapped it with a good one. When I installed it all five zone controls stopped receiving calls for heat. I checked a few for the 26 VAC but showed zero. I followed the traces back to the transformer. It also showed no voltage (AC or DC). The...

 

hi all

can anyone recommend a flexible soft drain cleaning hose for a pressure washer , the karcher drain hose looks quite stiff / ridged to work with ,also i would like something that i can gather up easily maybe put on a reel so its tidy .

thanks

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I am wanting to buy my own powerflush machine as it is getting harder to hire one when needed. Which one do you guys have? I am looking also at the Adey magna cleanse system (I have been on their training course at Worcester). Before taking the plunge I wanted to ask what is used the most.

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Hello,

I am looking at converting the rear portion of my integrated garage into a utility room/toilet and wanted to see what my options were for the venting and foul drainage.

Attached is a sketch of the current foul arrangement (estate agent plan is not that accurate) and my initial proposal for the toilet position and foul drainage.

In the proposal I would be running the toilet waste beneath the kitchen units to the rear of the house and then routing it below ground into the current run...

 

Just been to a job and it’s an old floor standing boiler in the basement of an old cottage. (OSPREY 125 CF) being a 35kw, I’m thinking of putting A 30kw heat only with a hive. As there is only 13 radiators in the property and a 250L vented cylinder, do you guys have any suggestions??

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There are a couple of glitches I'm working through but could you guys have a browse around it should be quite low advert wise. See my other thread in Whats New with regards to the advert changes. I think you'll like them.

But I'd like to take this chance to ask any member to please give me feedback whether on the forum, me myself, a forum category issue, anything that you think would help get some posting going on moving forward.

Please give me some feedback, any feedback at all. And...

 

Helping a friend at a small house in France.

Please advise about this thing on the bottom of the electric hot water tank.

The cold water comes in from the right, and I presume the TOP half is a pressure reducer, for the water to then go upwards into the tank.

I also presume the BOTTOM half is a pressure safety valve, if and when the water in the tank expands.

(I am used to seeing an expansion tank attached at this point in the UK.)

Anyway, yesterday I turned the bottom tap...

 

Am I being a div, never fitted the flat clip and where the hell is it supposed to go?

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Is your boiler making vibrating noise like kettle?, boiler making whistling noise? boiler making humming noise? boiler making load rumbling noise? boiler making gurgling noise?

You need to get a forum member in to service your boiler. Reply to this thread with your county and we will put the feelers out for you.

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customer wants boiler in unheated storeroom unheated storeroom, with louvre doors open to outside due to ventilation system installed in same room
warned them about risk of freezing - boiler will only be used a couple of days a week.
i know it will have a frost-stat, but that would not protect if there was a power failure, RCD trip etc.
Insulation of pipework would have to be 35mm, but that leaves valves,, filter, de-aerator - difficult to insulate them.
What else can i say to discourage the...

 

Seized Filling Loop Tap Hi, any ideas on how I can get this seized tap to turn? I can get it replaced in a couple of weeks but I need to fill the boiler as the pressure is on the low side. Any ideas what size they are so I can have it ready for the plumber when he comes?

Seized Filling Loop Tap to read more on the original thread at Plumbing Advice

See also UK Plumbing Advice for all UK plumbing advice needs.

 

Mixer Tap Cartridge change advise. Hi

Our kitchen mixer tap is leaking around the bottom. Unsure where the leak is coming from but suspect/hope a new cartridge will fix it.

I am not a confident DIY guy, our mains pressure is really high and so plumbing makes me nervous but I feel like this is a job I should really be able to do for myself.

Am I ok to isolate the tap using the isolation valves, pictures attached? Or will I need to go through the pain of turning off the mains supply to...

 

What plumbing tape is recommended for a copper waste water pipe Hi there,
We have a leaking waste water pipe which our washing machine, boiler and dishwasher feed into. We are working on getting a plumber in to fix but it is taking a while because access is awkward.
In the meantime, we're looking at using some tape to seal the leak but there are lots of different types (at different prices). Can anyone advise on what we should use?
We are looking to temporarily seal a copper waste water...

 

The Wheel Winner this week, a Plumber in Norfolk, Livvi Congratulations to The Wheel Plumber, Livvi - Won 90,000 for her Football Team, and a holiday and stuff I think she said.

Plumbing Lecturer AND Plumber still in and around Norfolk. (Anybody know her?)

Started plumbing at 16 and is now still a mere 30 but is a lecturer, I assume at a College?

Massive football fan. And started a Girls Team down her local club which I think she said Downham Market? (might need some help finding this...

 

Programmable digital cylinder stat I bought one of these:

and I am using it to control the temperature of my hot tub, and it works great. Does anyone know of a device like this that does not use plugs but rather can be wired in? I am looking for something to control my cylinder, that can be programmed down at night with the ability to set the differential. This model works great for the hot tub and you can set the on/off...

 

Heatrae Sadia multipoint 50 issue? Hi folks
I’ve never installed or maintained the water heater above but today I’ve isolated the cold into the heater but lived up the mains to it so that it could feed the other appliances.
I noticed that water was passing through the tundish. As id isolated the feed into the heater I ruled out the temp/prv on top of the unit being the issue. I checked the vessel which was flat and full of water, so I replaced it. Still water passing through tundish. There...

 

Is this bend in a PEX pipe too much? Hi,

I by chance discovered that amongst a bunch of copper pipes, I have a PEX pipe that runs through a void between the original house and extension. The image is from the back of a store cupboard where the pipes run up and then into the original house between floors.

I suspect this pipe has been in place for at least 12 years, if not more. We have lived here for 5. It was only when I looked up the void, I discovered this bend. Personally, I'd have...

 

Hi, new plumber to the site Hello all,

New to the site but not to plumbing. Live in the Midlands and run own small plumbing and heating company (just me lol). Looking forward to continuing to learns and contribute

Hi, new plumber to the site to read more on the original thread at Plumbing Advice

See also UK Plumbing Advice for all UK plumbing advice needs.

 

Bathroom Fitter in Newcastle Under Lyme Required Bathroom Fitter in Newcastle Under Lyme Required

(testing this forum category out)

Bathroom Fitter in Newcastle Under Lyme Required to read more on the original thread at Plumbing Advice

See also UK Plumbing Advice for all UK plumbing advice needs.

 

Boiler cycling Any ideas what could cause a boiler to repeatedly cycle on and off on both hot water and central heating. Until the boiler gets to temperature then settles down and stays on for both.

Boiler cycling to read more on the original thread at Plumbing Advice

See also UK Plumbing Advice for all UK plumbing advice needs.

 

Higher than normal co on new Grant 15-21 Wondering if anyone can shed some light. Installed a grant 15-21 internal utility boiler on Wednesday. Has a lo nox burner so co2 needs to be 12.5%. Got the co2 at 12.5% but just can’t get the co level down. Sitting at 75ppm which I know is lower than 100, but all the grants I’ve installed before co usually well below 30ppm. Bit of context it has a vertical balanced flue no bends and is well within max flue length. Just can’t get this job out of my...

 

Biasi Riva Plus He 28C - No hot water Boiler: Biasi Riva Plus He 28C Erp
GC: 47-583-42
Serial No: N056941117

Hi fellow engineers
Need some help on this boiler please.
Boiler works fine for central heating, but as soon as hot water is turned on, all the fault leds flash, middle red lock out led solid.

There was another fault which indicated a APS fault. Both green leds flashing, red solid.
Would the APS function normally on CH mode?

Would appreciate any insight please.

Biasi...