jambo

[jambo]

hey guys got a unvented system will be starting soon customer wants mixer shower but and this is a big but mains pressure is only 1-1.5 bar need serious advice on this one please cheers guys

 

[wiltsplumb]

wouldnt consider puttting in unvented cylinder on 1 to 1.5 bar performance would not justify cost of unvented cylinder.

 

[wnjswozo]

agree with wiltsplumb,but shower not a problem just put a shower pump on for mixer,you need a new cold main putting in.

 

[jambo]

oh dear not good news is ther no way round this problem at all house is that big it has two vented cylinders runnin off a worcester reg boiler HELP job comin next week what would be the outcome if fitted on this low pressure mains

 

[Billy Bob Bob]

you cant go unvented what about conventinal tank/cylinder

 

[jambo]

any way of upping the mains

 

[Billy Bob Bob]

oh dear not good news is ther no way round this problem at all house is that big it has two vented cylinders runnin off a worcester reg boiler HELP job comin next week what would be the outcome if fitted on this low pressure mains

it would not work

 

[wiltsplumb]

if you put in an unvented cylinder with that low pressure performance will suffer massively only real option is to replace water main using 25mm mdpe you also need to check flow rate as that is just as important !!!

 

[Billy Bob Bob]

oh dear not good news is ther no way round this problem at all house is that big it has two vented cylinders runnin off a worcester reg boiler HELP job comin next week what would be the outcome if fitted on this low pressure mains

sorry dident se this first what about renewing like for like,converting to fully pumped and raising the head of the tanks if possible this will give a pretty good shower

 

[jambo]

tanks are as high as they can go bud so in a nutshell unvented no go