Ahhh is there an M&E plumbing contractor in North East that can help me

[king of pipes]

We are all different shaun work well for me in the past a M+E consultant is needed in my opion he needs someone to come back to as he has already been bitten once this should protect both installer and client with a satisfactory design and install. Cheers kop

 

[ShaunCorbs]

We are all different shaun work well for me in the past a M+E consultant is needed in my opion he needs someone to come back to as he has already been bitten once this should protect both installer and client with a satisfactory design and install. Cheers kop

Just had a bad kock with there customer services and warrenty, so wouldn't recommend them

 

[n141311]

hey up all,

thanks to Chalk - I managed to find a plumber who is going to follow his spec and we are finally back on track Wahey.

The duty point tank has come out mega expensive and I'm going to see how demand is for showers and install one in future if necessary (plumber is going to pipe everything in so it's easy to add a duty point tank in future).

He has recommended the following pump though: Magna3 26/60

Anyone know if this is any good? I know that Chalk had said I'd need a "suitably sized mains heating pump" - is that what this is?

Apologies in advance for the rookie Qs. (I don't want to Sod off Chalk by asking him so many Qs so am posting to broader forum)

 

[ShaunCorbs]

you've had some good luck then if its sized right yes prefer dab myself but a pump is a pump

and i feel your going to need a pump sorry to say

 

[n141311]

hi @ShaunCorbs - is 26/60 the right kinda size? 42mm pipework will have up to 120 litres per min flowing through them in final state so want to ensure I'm using the right size pump.

 

[ShaunCorbs]

hi @ShaunCorbs - is 26/60 the right kinda size? 42mm pipework will be flowing unto 120 litres per min in final state so want to ensure I'm not using the right size.

depends on size of property but he will know what size or im sure grunfos do a sizing app or calc

 

[n141311]

depends on size of property but he will know what size or im sure grunfos do a sizing app or calc

hey @ShaunCorbs and @Chalked

I've had a plumber come back with a quote and wanted to get thoughts. Materials £7.5k for materials (excludes duty point) and £4.5k labour.

Reckons it will take him 150 hrs between 2 men to do the following. Does that feel about right?

Quote:

- pressure test (hallways, 4 bedrooms, 3 ensuites)
- Pipework for 1 bathroom inc. towel radiator, toilet, his/her dual basin, shower
- move Primary 25mm mains water supply 2ft to duty point location (duty point will not yet be fitted but only piping done to enable one to go in)
- move the Secondary mains water supply 1ft to plant room
- hook up the speed fit underfloor heating kit to heating system (builder already installed it in kitchen)
- install and commission the following equipment:

2 x 300l RM indirect unvented cylinder
2 x vaillant boilers giving a total of 60kw
Low loss header.
Suitable sized main heating pump
Mixing valve to give hot water priority
Vaillant sequence controller
Duty point pump set to give 120 lpm

42 mm primaries and connecting pipework
Motorised valves to all circuits

 

[ShaunCorbs]

Might be missing something but what about the other 5 bathrooms and 4 bedrooms ?

 

[n141311]

Might be missing something but what about the other 5 bathrooms and 4 bedrooms ?

We've split it between Phase 1 and Phase 2.
Quote covers Phase 1 (4 beds, 4 baths). Once that is done and system is in, phase 2 will involve doing the remaining pipework for the final set of 4 beds, 4 baths, 1 WC.

 

[ShaunCorbs]

Sounds cheap on both labour and materials

Boilers alone and bits would come to 3-4K

Unless you have all the bathroom stuff ?

 

[n141311]

Sounds cheap on both labour and materials

Boilers alone and bits would come to 3-4K

Unless you have all the bathroom stuff ?

Yeah it doesn't include fitting any of the showers or bathroom units. Literally just getting the stated equipment (boilers, cylinders) installed and commissioned.

Fitting the rads, basins, toilets and showers / tiling etc will be extra.

 

[ShaunCorbs]

Sounds ok if it's just for the heating works

 

[n141311]

Sounds ok if it's just for the heating works

thanks mate

 

[ShaunCorbs]

thanks mate

Don't know if it's in the spec but you will require a secondary return circuit and pump (hot water)

 

[n141311]

Don't know if it's in the spec but you will require a secondary return circuit and pump (hot water)

Yeah that's part of the quote. Secondary return and the Magna3 pump.

 

[ShaunCorbs]

Yeah that's part of the quote. Secondary return and the Magna3 pump.

Ok just make sure it's lagged/ insulated good

Before you put the floors back

 

[oz-plumber]

We've done quite a few commercial type installations with Rinnai equipment.

Why don't you get them to size the equipment for you.
We've done them with banks of Rinnai's or Rinnai's bolted onto their cylinders.

What you want is recovery rate so I would go for something like 1 cylinder with 2 Rinnai units connected to it. The recovery rate of something like that would almost be instant. The Rinnai's only heat the cylinder water via pump(s) operated by the tank stat.
Never ever had a issue with anything they have sized or designed.

Give them a try

 

[ShaunCorbs]

how you getting on op?