40 kw boiler water flow & return pipe diameter

[mrcabrach]

hi there just got delivery of 40 kw biomass boiler & accumulator tank
can anyone advise me on what diameter of pipeing to connect them together boiler has 2" flow & return tank has 1 1/2"
& in themiddle there will be a laddomat valve with 32mm fittings
i was thinking 35mm someone else said 42mm
the 35mm fittings would be more avaliable
any advise welcome

boiler & tank less than 2m apart

 

[Onetap]

hi there just got delivery of 40 kw biomass boiler & accumulator tank
can anyone advise me on what diameter of pipeing to connect them together boiler has 2" flow & return tank has 1 1/2"

You've bought a 40kW biomass boiler and haven't spent one penny on any sort of system design?

Wow.

Best of luck.

 

[Agile]

Why do you need a 40 kW boiler?

What is the total rad power output?

Are you aware that Building Control probably want to be involved?

Tony

 

[mrcabrach]

You've bought a 40kW biomass boiler and haven't spent one penny on any sort of system design?

Wow.

Best of luck.[/quote]
35mm pipe design on back of 2 fag packets although i havent purchased the pipe & fittings yet got every thing else
any chance you mabe could lend me if i run short on fire wood

 

[mrcabrach]

Why do you need a 40 kW boiler?

What is the total rad power output?

Are you aware that Building Control probably want to be involved?

Tony

1. i live in a cold place. plenty is better than just enough around 28-32 kw

2. house 220 m stone walls with little insulation 100 year +

3. up here (in the woods) we can please ourselves

 

[Norcon]

35mm is fine.
Which boiler do you have?

 

[mrcabrach]

orlan super 40 with prosat 2000 ltr buffer
two Polish guys delivered it a couple of weeks back couldent speak a word of english i asked them where they got the ferrie to over the channel the sea the water they looked at 1 another and said
Peterburough

 

[Agile]

There is no point of having 40 kW of boiler unless you have 40 kw of radiators!

A typical semi needs 11 kW of heating power!

Tony

 

[mrcabrach]

i have plans
i have workshop that cold be done with a little heat in the winter also thought i could run some heat to the green house
mabe have a miniture botanic garden
so rest asured no kw will be wasted
trouble with this old houses is the lack of insulation behind the walls
cost nearly the price of a new build to strip back to bare stone to insulate

 

[Norcon]

There is no point of having 40 kW of boiler unless you have 40 kw of radiators!

A typical semi needs 11 kW of heating power!

Tony

You having a senior moment Agile?
He's fitting a buffer which should absorb the full output of the boiler and act as a thermal flywheel.

German law (BlmSchV) requires a minimum capacity of 25 litres per kW of boiler output.
The OP has 50 so that keeps him in full compliance and then some.

 

[ALEC1]

even so, he could do that with a correctly sized boiler...and save some up front money!

 

[Norcon]

Two poles have already delivered it straight from poland, so he's avoided the uk sharks. Thats the best money he'll ever save up front!

 

[mrcabrach]

Two poles have already delivered it straight from poland, so he's avoided the uk sharks. Thats the best money he'll ever save up front!

O yes

 

[OLLIE20]

Get them to fit it, and save yourself a few more quid

 

[mrcabrach]

Get them to fit it, and save yourself a few more quid

me no understand

may need a little help with connection to existing radiator circut but will post any questions nearer the time just in process of building boiler house probably october before i have time to plumb it up