Flow + Pressure Test

[Stants]

Hi
Just done a Flow and pressure test
Flow 3,3 L in 10 secs =19.8
( did it 3 times pretty consistent)
Pressure 4 Bar
This however was at kitchen sink downstairs but looking to install Unvented Cylinder ( santon or Mega or similar) in loft ( servicing 1 bathroom + 1 onsuite ) will/ is this going to decrease by much going up approx 5.3 mtrs ( 2 storeys ) I think the pressures ok but the Flow may be on the cusp ?? Any thoughts
Thanks

 

[ShaunCorbs]

Aslong as the mains is done in 22mm from the stop tap you will be fine

 

[townfanjon]

You loose 0.1 bar per meter so you would still be ok pressure wise . Sorry not totaly sure how you have done your flow test .

 

[Stants]

The flow I filled a bucket for 10 seconds
The amount was 3.3 Ltrs so 3.3 x 6=19.8 in 1 minute I think that's how it's calculated or is that a bit Heath Robinson lol

 

[Stants]

Aslong as the mains is done in 22mm from the stop tap you will be fine

Are you saying mains from Street stopcock or house stopcock

 

[ShaunCorbs]

Are you saying mains from Street stopcock or house stopcock

house

 

[Stants]

house[/QUOTE
Honest I'm not sure it's been 30 years since it was done ? it's 15 mm under sink but I could run 22 from where it enters the house i.e. Upgrade / change it all I'm doing a load of revamping

 

[ShaunCorbs]

best way to, else the drop might be too much

 

[Stants]

best way to, else the drop might be too much

Do you think the flow will be enough ?

 

[ShaunCorbs]

Do you think the flow will be enough ?

if you run it from the mains in 22mm yes and use as many formed bends as possible

 

[townfanjon]

The flow I filled a bucket for 10 seconds
The amount was 3.3 Ltrs so 3.3 x 6=19.8 in 1 minute I think that's how it's calculated or is that a bit Heath Robinson lol

Never seen it done that way but yes I see how its done ...
Sorry I have to ask , are you installing this cylinder

 

[Stants]

Never seen it done that way but yes I see how its done .
Sorry I have to ask , are you installing this cylinder

No no no just finding out what can / can't / needs to done

 

[Stants]

Never seen it done that way but yes I see how its done .
Sorry I have to ask , are you installing this cylinder

Is there another / more accurate way to test the flow

 

[townfanjon]

No no no just finding out what can / can't / needs to done

I can understand you doing some groundwork pal , but please make sure somebody is G 3 qualified to install it if you go ahead

 

[ShaunCorbs]

Is there another / more accurate way to test the flow

other than a flow cup no

 

[Stants]

I can understand you doing some groundwork pal , but please make sure somebody is G 3 qualified to install it if you go ahead

That's a good point silly question but what do I ask for proof of this ... what do they hold as proof ...is it a BPEC certificate ?

 

[ShaunCorbs]

That's a good point silly question but what do I ask for proof of this . what do they hold as proof ...is it a BPEC certificate ?

Yes or if there has safe should have it on there card

 

[townfanjon]

Different bodies do the qualification ( 2 at least lol )
They must be 3 G thats all you need to ask

 

[Stants]

Different bodies do the qualification ( 2 at least lol )
They must be 3 G thats all you need to ask

if you run it from the mains in 22mm yes and use as many formed bends as possible

ah ok I see avoid elbows yeah that makes so much sense I'll try and get it to go up as direct as I can it's all In the planning lol cheers

 

[Ric2013]

Hang on. I'm not G3, but I would suspect that 4 Bar is his static pressure. Won't his installer need to know what the operating pressure is, at a given flow rate?