Unvented tank install

[Vee]

Who suggested the install of this to be suitable for a basement without drainage?

 

[mjam]

Who suggested the install of this to be suitable for a basement without drainage?

The plumber/engineer suggested it. We had a combi that we wanted replacing and he said it was the best option given the number of bathrooms

 

[SimonG]

What sort of pump should it have? I can’t have my basement room filled with boiling hot water.

The last one I did in a basement had a galvanised tank with a submersible pump rated for 95 degree water.

 

[ShaunCorbs]

Pump house unvented pump

 

[mjam]

Thanks for the advice. The other pipe going into the pump is the combined combined prv and condensate pipe from the viessmann system boiler is this correct?

 

[ShaunCorbs]

Yes that is correct and the pump can't even handle that

 

[mjam]

Yes that is correct and the pump can't even handle that

Thanks I’m guessing that can get very hot as well then? I checked and the pipe that is fitted going out of the pump is only suitable to 40 degrees

 

[ShaunCorbs]

Yep

 

[Vee]

The installer is right to suggest the Combi was unsuitable in your scenario although the location of the cylinder remains a bad choice.

 

[gassed up]

Just out of interest why would a basement be a bad location for an UV cylinder?

 

[brum]

Hi,

I’ve recently had a new central heating system installed which I’m happy with. The only concern I have is that the unvented tank has been installed sitting on a pallet.

The plumber told me he did this because it needed to be installed onto a flat surface. The surface wasn’t flat because he had removed a brick platform the old boiler stood on to make space for the tank

Here is a link to a picture. Should I be concerned?
8 E29 DEEE 3819 40 EA BB69 F05 BDC4 D8074

Hi,

I’ve recently had a new central heating system installed which I’m happy with. The only concern I have is that the unvented tank has been installed sitting on a pallet.

The plumber told me he did this because it needed to be installed onto a flat surface. The surface wasn’t flat because he had removed a brick platform the old boiler stood on to make space for the tank

Here is a link to a picture. Should I be concerned?
8 E29 DEEE 3819 40 EA BB69 F05 BDC4 D8074

 

[brum]

Hi,

I’ve recently had a new central heating system installed which I’m happy with. The only concern I have is that the unvented tank has been installed sitting on a pallet.

The plumber told me he did this because it needed to be installed onto a flat surface. The surface wasn’t flat because he had removed a brick platform the old boiler stood on to make space for the tank

Here is a link to a picture. Should I be concerned?
8 E29 DEEE 3819 40 EA BB69 F05 BDC4 D8074

Hi,

I’ve recently had a new central heating system installed which I’m happy with. The only concern I have is that the unvented tank has been installed sitting on a pallet.

The plumber told me he did this because it needed to be installed onto a flat surface. The surface wasn’t flat because he had removed a brick platform the old boiler stood on to make space for the tank

Here is a link to a picture. Should I be concerned?
8 E29 DEEE 3819 40 EA BB69 F05 BDC4 D8074[/QUOT

 

[SimonG]

Because it can be a mare to pipe up the d2 if there's no drainage.

 

[Kargo]

Make sure installer has a G3 unvented qualification. The pump is definitely not the spec required for this job, asking for a flood. Pallet arguably not the best. From pics discharge looks okay until it reaches pump of course. Can’t really see the cold feed pipe work to comment. We usually use a combo valve which has all the safety devises, pressure reducer/check valve expansion vessel, pressure relief port as part of the assembly.

 

[mjam]

Hi,

Thanks to you all for pointing out the problems. I confronted the installer about the issues and he promised to resolve them. He decided the best way to fix it was to get a different tank with a separate pressure vessel and put the new tank on a proper platform so it could vent through the wall (the basement is only part underground). Now only the boiler goes into a (New) pump which he says Viessmann have told him is suitable for the combined PVT and condensation output of this boiler. I've taken some pictures of the new set up. Could you have a look and see if I should have any concerns?
He's plumbed the combined PVT and condensate when it goes outside into a pipe that seems to terminate into the soil at the side of the house (to my knowledge there is no drain there). Is this correct?
Also is the pressure vessel serviceable where he has put it. I thought they needed to be serviced annually?
The PVT output from the cylinder terminates in that tiny cage he has installed. For some reason he has put a second pipe there as well which is not connected to anything.


New unvented tank

 

[sammathias]

No check valve on the secondary either

Never been tought to fit a checkvalve on secondary....?

 

[sammathias]

Hi,

Thanks to you all for pointing out the problems. I confronted the installer about the issues and he promised to resolve them. He decided the best way to fix it was to get a different tank with a separate pressure vessel and put the new tank on a proper platform so it could vent through the wall (the basement is only part underground). Now only the boiler goes into a (New) pump which he says Viessmann have told him is suitable for the combined PVT and condensation output of this boiler. I've taken some pictures of the new set up. Could you have a look and see if I should have any concerns?
He's plumbed the combined PVT and condensate when it goes outside into a pipe that seems to terminate into the soil at the side of the house (to my knowledge there is no drain there). Is this correct?
Also is the pressure vessel serviceable where he has put it. I thought they needed to be serviced annually?
The PVT output from the cylinder terminates in that tiny cage he has installed. For some reason he has put a second pipe there as well which is not connected to anything.


New unvented tank

The tee directly below the temperature/pressure relief off the cylinder before the tundish. Where does that go?? Multifunctional valve?

 

[mjam]

The tee directly below the temperature/pressure relief off the cylinder before the tundish. Where does that go?? Multifunctional valve?

It goes into the blue valve here:

Imgur: The magic of the Internet

 

[ShaunCorbs]

Still wrong, the blue valve pipe goes up hill not acceptable

 

[mjam]

Still wrong, the blue valve pipe goes up hill not acceptable

Thanks, so he's done it wrong again. What problem does this being incorrect cause?

 

[Scott_D]

Flue needs a guard

 

[ShaunCorbs]

Thanks, so he's done it wrong again. What problem does this being incorrect cause?

It won't drain it's more of a hazard than before sorry to say

Any chance of a pic of the whole cylinder ?

 

[mjam]

It won't drain it's more of a hazard than before sorry to say

Any chance of a pic of the whole cylinder ?

Thats not good. Here are some pictures I just took of the whole cylinder

Cylinder

 

[sammathias]

I wouldnt necessarily agree with shaun saying the pressure relief is a hazard but its certainly not to regs as it goes uphill alot!

 

[mjam]

Flue needs a guard

Thanks, What sort of Guard should it have?

What about the black pipe coming out of the wall and going into the soil. That has the combined boiler PRV and condensate that is being pumped out going into it. There is no drain their so I can only assume he is trying to soak it away. Is that correct?