Ask a plumber/heating ‘engineer’ anything
Discussion
a viesmann 200 30KW combi can do almost 17Lpm dhw and will run 2 showers just fine if you restrict the showers flow rates
the storage combis can provide a hell of alot of flow without having to go stupid on the output
viessmann are expensive though the 222-F 32kw is about 3600 on its own the 111-w is 2200 ish
i do love my viessmann boiler maybe a bit too much
the storage combis can provide a hell of alot of flow without having to go stupid on the output
viessmann are expensive though the 222-F 32kw is about 3600 on its own the 111-w is 2200 ish
i do love my viessmann boiler maybe a bit too much
Edited by Trustmeimadoctor on Friday 12th April 16:25
Was about to change a kitchen tap, new one comes with flexibles that terminate with a female end
and that's fine for the cold pipe which is terminated with an inline pressure adjuster. This is the hot pipe end
Am I best to see if I can get a flexi to fit or to put an adjuster on this pipe as well, thus reversing the gender of the pipe end?
TIA
and that's fine for the cold pipe which is terminated with an inline pressure adjuster. This is the hot pipe end
Am I best to see if I can get a flexi to fit or to put an adjuster on this pipe as well, thus reversing the gender of the pipe end?
TIA
Fingers, toes and everything in between crossed I have hopefully now solved my boiler pressure issues.
When it was first being diagnosed the water in the system was oily black and the plumber said it needed a powerflush. However, as a result of having to refill the system from 0.1bar every day the water in the system appears to be a cloudy grey. My questions are
1. Now that the water looks clean does it still need a powerflush?
2. Assuming it does, I assume it makes sense to put inhibitor in AFTER the system's been flushed and not before?
3. Finally, does the fact that Ive been filling the system with fresh water daily for a month mean that I have possibly caused problems somewhere?
Thanks as always
When it was first being diagnosed the water in the system was oily black and the plumber said it needed a powerflush. However, as a result of having to refill the system from 0.1bar every day the water in the system appears to be a cloudy grey. My questions are
1. Now that the water looks clean does it still need a powerflush?
2. Assuming it does, I assume it makes sense to put inhibitor in AFTER the system's been flushed and not before?
3. Finally, does the fact that Ive been filling the system with fresh water daily for a month mean that I have possibly caused problems somewhere?
Thanks as always
Hi,
My pressurised system is losing pressure, I estimate at about 0.2 bar a week. I've also noticed I am having to bleed a rad at the top of the house fairly regularly.
We've recently had a lot of work done as part of an extension, so I've waited a while for all the air to pass through the system and things to settle down, but the system is still losing pressure over time.
I'm quite worried we have a leak somewhere and will have to tear up recently completed work at great expense. If it's a leak in the underfloor heating I would of course have a significant issue.
Could it be something less concerning or easily diagnosed or is this definitely a leak?
My pressurised system is losing pressure, I estimate at about 0.2 bar a week. I've also noticed I am having to bleed a rad at the top of the house fairly regularly.
We've recently had a lot of work done as part of an extension, so I've waited a while for all the air to pass through the system and things to settle down, but the system is still losing pressure over time.
I'm quite worried we have a leak somewhere and will have to tear up recently completed work at great expense. If it's a leak in the underfloor heating I would of course have a significant issue.
Could it be something less concerning or easily diagnosed or is this definitely a leak?
Hi - DIY'er renovating a small bathroom and getting confused about my wastes.
The bath and basin both drain into a waste pipe in the middle of the room. Bad paint image below!
Previously the bath (with a shallow trap) would gurgle and water would come up out of the bath plughole whenever the basin was being drained. I guess this was due to the pressure of water coming from the higher basin pushing the water out of the trap.
Also, if you partially emptied the bath to let some water out and then put the plug back in, the basin would gurgle and the room would smell of sewer. I guess this was due to the suction of the draining water pulling water from the basin trap.
Is this right? I'm not 100% on how to rectify this.
I think I need an anti-syphon trap for the basin and a self-sealing trap for the bath (or are these the same thing?).
Do I also need an air admittance valve somewhere? Is there any harm putting one on the basin side of the pipe anyway?
Would appreciate any recommendations on brands etc.
Cheers
The bath and basin both drain into a waste pipe in the middle of the room. Bad paint image below!
Previously the bath (with a shallow trap) would gurgle and water would come up out of the bath plughole whenever the basin was being drained. I guess this was due to the pressure of water coming from the higher basin pushing the water out of the trap.
Also, if you partially emptied the bath to let some water out and then put the plug back in, the basin would gurgle and the room would smell of sewer. I guess this was due to the suction of the draining water pulling water from the basin trap.
Is this right? I'm not 100% on how to rectify this.
I think I need an anti-syphon trap for the basin and a self-sealing trap for the bath (or are these the same thing?).
Do I also need an air admittance valve somewhere? Is there any harm putting one on the basin side of the pipe anyway?
Would appreciate any recommendations on brands etc.
Cheers
DoubleSix said:
Hi,
My pressurised system is losing pressure, I estimate at about 0.2 bar a week. I've also noticed I am having to bleed a rad at the top of the house fairly regularly.
We've recently had a lot of work done as part of an extension, so I've waited a while for all the air to pass through the system and things to settle down, but the system is still losing pressure over time.
I'm quite worried we have a leak somewhere and will have to tear up recently completed work at great expense. If it's a leak in the underfloor heating I would of course have a significant issue.
Could it be something less concerning or easily diagnosed or is this definitely a leak?
Could be a faulty expansion vessel as they have a lifespan. If that's the case it may be losing the water through the pressure relief valve. Can you see where that exits? Sometimes not easy (mine is high up), but see if you can tell if any water is dripping out of it when system running. How old is it?My pressurised system is losing pressure, I estimate at about 0.2 bar a week. I've also noticed I am having to bleed a rad at the top of the house fairly regularly.
We've recently had a lot of work done as part of an extension, so I've waited a while for all the air to pass through the system and things to settle down, but the system is still losing pressure over time.
I'm quite worried we have a leak somewhere and will have to tear up recently completed work at great expense. If it's a leak in the underfloor heating I would of course have a significant issue.
Could it be something less concerning or easily diagnosed or is this definitely a leak?
We had a faulty heat exchanger in our boiler which caused pressure loss. Less common but possible. The water would be leaving through the condensate pipe in that scenario. Obviously, water is supposed to come out of that pipe when it's condensing so the telltale is it dripping out when the system is off.
I'm tearing my hair out with the people currently working on our system and they're now trying to wash their hands of the situation entirely.
I noticed water dripping from our HW expansion tank one night. The next day someone was out to look at it and said best to replace the vessel. A like for like replacement was ordered because it's a tight fit and he wanted to be sure it'd fit. Some disassembly of the pipes underneath was required to get the old one out and new one in.
Since it was fitted we now get a really loud vibration / comedy fart-type noise coming from the tank. It usually happens in the evening when my wife goes to run herself a bath (having already run a bath for the kids). So i'm guessing it needs a drain/refill/heat cycle to do it. We also noticed the hot water pressure was poor.
They've been out several times to adjust the pressure in the tank, adjust our incoming cold feed pressure - and we either end up with lots of noise and poor pressure or no noise and awful pressure. As i said, they're trying to wash their hands of the situation now and telling me any more visits would be chargeable, but the way i see it the job isn't finished. If they found something else was faulty or needs replaced id pay for it, but they just keeping pumping things up or letting pressure out and saying that we should be fine after that.
I've been reading up about mixer taps and back pressure from cold through hot due to failed cartridges, but it feels like i'm clutching at straws. The engineer called the technical line for the expansion tank manufacturer and he has "already done everything they said it could be".
Any ideas?
I noticed water dripping from our HW expansion tank one night. The next day someone was out to look at it and said best to replace the vessel. A like for like replacement was ordered because it's a tight fit and he wanted to be sure it'd fit. Some disassembly of the pipes underneath was required to get the old one out and new one in.
Since it was fitted we now get a really loud vibration / comedy fart-type noise coming from the tank. It usually happens in the evening when my wife goes to run herself a bath (having already run a bath for the kids). So i'm guessing it needs a drain/refill/heat cycle to do it. We also noticed the hot water pressure was poor.
They've been out several times to adjust the pressure in the tank, adjust our incoming cold feed pressure - and we either end up with lots of noise and poor pressure or no noise and awful pressure. As i said, they're trying to wash their hands of the situation now and telling me any more visits would be chargeable, but the way i see it the job isn't finished. If they found something else was faulty or needs replaced id pay for it, but they just keeping pumping things up or letting pressure out and saying that we should be fine after that.
I've been reading up about mixer taps and back pressure from cold through hot due to failed cartridges, but it feels like i'm clutching at straws. The engineer called the technical line for the expansion tank manufacturer and he has "already done everything they said it could be".
Any ideas?
Chucklehead said:
I'm tearing my hair out with the people currently working on our system and they're now trying to wash their hands of the situation entirely.
I noticed water dripping from our HW expansion tank one night. The next day someone was out to look at it and said best to replace the vessel. A like for like replacement was ordered because it's a tight fit and he wanted to be sure it'd fit. Some disassembly of the pipes underneath was required to get the old one out and new one in.
Since it was fitted we now get a really loud vibration / comedy fart-type noise coming from the tank. It usually happens in the evening when my wife goes to run herself a bath (having already run a bath for the kids). So i'm guessing it needs a drain/refill/heat cycle to do it. We also noticed the hot water pressure was poor.
They've been out several times to adjust the pressure in the tank, adjust our incoming cold feed pressure - and we either end up with lots of noise and poor pressure or no noise and awful pressure. As i said, they're trying to wash their hands of the situation now and telling me any more visits would be chargeable, but the way i see it the job isn't finished. If they found something else was faulty or needs replaced id pay for it, but they just keeping pumping things up or letting pressure out and saying that we should be fine after that.
I've been reading up about mixer taps and back pressure from cold through hot due to failed cartridges, but it feels like i'm clutching at straws. The engineer called the technical line for the expansion tank manufacturer and he has "already done everything they said it could be".
Any ideas?
Sticking my neck out and calling it can only be the diaphragm in the expansion vessel. Either it's a faulty vessel, or it's not been charged properly to 3 Bar.I noticed water dripping from our HW expansion tank one night. The next day someone was out to look at it and said best to replace the vessel. A like for like replacement was ordered because it's a tight fit and he wanted to be sure it'd fit. Some disassembly of the pipes underneath was required to get the old one out and new one in.
Since it was fitted we now get a really loud vibration / comedy fart-type noise coming from the tank. It usually happens in the evening when my wife goes to run herself a bath (having already run a bath for the kids). So i'm guessing it needs a drain/refill/heat cycle to do it. We also noticed the hot water pressure was poor.
They've been out several times to adjust the pressure in the tank, adjust our incoming cold feed pressure - and we either end up with lots of noise and poor pressure or no noise and awful pressure. As i said, they're trying to wash their hands of the situation now and telling me any more visits would be chargeable, but the way i see it the job isn't finished. If they found something else was faulty or needs replaced id pay for it, but they just keeping pumping things up or letting pressure out and saying that we should be fine after that.
I've been reading up about mixer taps and back pressure from cold through hot due to failed cartridges, but it feels like i'm clutching at straws. The engineer called the technical line for the expansion tank manufacturer and he has "already done everything they said it could be".
Any ideas?
Somebody said:
Sticking my neck out and calling it can only be the diaphragm in the expansion vessel. Either it's a faulty vessel, or it's not been charged properly to 3 Bar.
He has seen out three or four times and every time he just brings in his pump and plays around with the pressure in the tank and then goes down and adjusts the cold feed pressure coming into the house. Either he's not doing it properly, or he also doesn't know what it could be beyond that. My hot water only stays hot for about half an hour.
It’s an invented cylinder, heated by a traditional 45kw boiler.
I suspect that cold water is short-circuiting one of the mixer taps or showers, but with seven bathrooms and toilets many of which have piping inside the shower cubicle walls it’s not obvious how to find out where the issue is.
Any thoughts of a clever way to find out?
It’s an invented cylinder, heated by a traditional 45kw boiler.
I suspect that cold water is short-circuiting one of the mixer taps or showers, but with seven bathrooms and toilets many of which have piping inside the shower cubicle walls it’s not obvious how to find out where the issue is.
Any thoughts of a clever way to find out?
Ken_Code said:
My hot water only stays hot for about half an hour.
It’s an invented cylinder, heated by a traditional 45kw boiler.
I suspect that cold water is short-circuiting one of the mixer taps or showers, but with seven bathrooms and toilets many of which have piping inside the shower cubicle walls it’s not obvious how to find out where the issue is.
Any thoughts of a clever way to find out?
Similar scenario here -watch from 2 mins in It’s an invented cylinder, heated by a traditional 45kw boiler.
I suspect that cold water is short-circuiting one of the mixer taps or showers, but with seven bathrooms and toilets many of which have piping inside the shower cubicle walls it’s not obvious how to find out where the issue is.
Any thoughts of a clever way to find out?
Gassing Station | Homes, Gardens and DIY | Top of Page | What's New | My Stuff