Industrial unit boilers

[Kerr Gas 1]

Looking for some advice
got called out to quote for a job today and when I arrived at the address I realised it was a industrial unit, has one big room not huge with a couple small offices and two bathrooms and a small kitchen area. They have to combi boilersin at the moment combi 1 heats the big room via underfloor heating combi two does the kitchen area and bathrooms. So the two combis have to be replaced with condensing boilers usually I install worcesters so il probably go with two green star 30si. My question is does this job need a commercial engineer as its a business unit. I've checked gas meter which is a domestic u6 meter
Any replies appreciated

 

[SimonJohns]

Thats domestic as far as I can see. Just dont exceeds your limits. Pipe work and kw

 

[SimonJohns]

Forget the comment about the kw. You can't exceed 60kw

 

[Hardy1]

yep agree with simon johns, if you was still not sure , hey theres sum reading lol.

 

[dancinplumba]

Forget the comment about the kw. You can't exceed 60kw

is it not 70 kw ?

 

[SimonJohns]

is it not 70 kw ?

He can't exceed 60kw because he's using a u6

 

[JG123]

Just make sure your not out of scope with your IV make sure you include the meter IV and 10% for fittings... doubt you will exceed but just thought id say, how big is this place? why two combi boilers?

 

[Kerr Gas 1]

I asked the same question myself, it's a descent size floor space on the main office combi 1 heats this space through Ufh with 8 circuits that's all as far as I can see. Combi 2 heats kitchen/toilet area 3 double rads and also supplies hot water for kitchen. I'd think il call gas safe to be sure but thanks for heads up

 

[JG123]

No worries, your max IV is 0.035m3, and you meter IV is 0.008m3 so 0.035-0.008=0.027 divide this by

0.00084 per 1 mtr length for 35mm copper
0.00054 per 1 mtr length for 28mm copper
0.00032 per 1 mtr length for 22mm copper
0.00014 per 1 mtr length for 15mm copper

dont forget the 10% for fittings, this will give you a rough idea.

 

[Nostrum]

He can't exceed 60kw because he's using a u6

I always thought it was 6m3/hr although they were capable of more normally? Never heard it being translated in Kw before, is there much differance between the two?