cold inlet pressure

[timmy74]

ive got a job to do customer asking for a combi boiler fitted can anyone tell me what inlet presure it will need to fire i know its normally 1bar what about cw flow rate

 

[gas4you]

Most modern combis will work down to 0.5Bar. You havent said what siz combi it is so as long as you've got around 15 litres/ min should cover most adequately.

 

[timmy74]

Most modern combis will work down to 0.5Bar. You havent said what siz combi it is so as long as you've got around 15 litres/ min should cover most adequately.

worcester greenstar 28kw

 

[gas4you]

Presumably as with most 28Kw combis this will give around 12 litres/min @ 35 rise, so with about 1 bar pressure and 15 l/min cold there should be enough water to use it .