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- 19 Jun 2007
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Hi guys,
I've a plumber coming next Monday to plumb in a shower pump. I have bought one of these:
http://www.plumbworld.co.uk/grundfos-niagara-15-bar-twin-1655-18701
All the web adverts for this pump say it is OK for use with 15mm or 22mm pipe work however when I read the manual, it says the pipework must be 22mm MINIMUM.
I have looked on numerous web sites and they all say the same - 15mm or 22mm but the handbook is clear 22mm minimum.
My plumber has said that (given the plumbing available) the best way to connect the pump is by taking a feed from the 15mm H and C supply which runs near to the cupboard in which the pump will be situated.
Do all pumps recommend 22mm in this way, when in reality 15mm is fine? Or do I need to change the pump for one which is definitely 15mm compatible.
I know what the manual says but I just wonder whether in reality it is really so important.
Thanks for any assistance!
Ed
I've a plumber coming next Monday to plumb in a shower pump. I have bought one of these:
http://www.plumbworld.co.uk/grundfos-niagara-15-bar-twin-1655-18701
All the web adverts for this pump say it is OK for use with 15mm or 22mm pipe work however when I read the manual, it says the pipework must be 22mm MINIMUM.
I have looked on numerous web sites and they all say the same - 15mm or 22mm but the handbook is clear 22mm minimum.
My plumber has said that (given the plumbing available) the best way to connect the pump is by taking a feed from the 15mm H and C supply which runs near to the cupboard in which the pump will be situated.
Do all pumps recommend 22mm in this way, when in reality 15mm is fine? Or do I need to change the pump for one which is definitely 15mm compatible.
I know what the manual says but I just wonder whether in reality it is really so important.
Thanks for any assistance!
Ed