Alpha cd24s

pappleyard · 19 Feb 2005

Help
Just had a new Alpha cd24s fitted with a pessurised cylinder.Have tried balancing and bleeding the system but the rads only just get warm not hot.I have three bathrooms and 18 rads,Is this boiler powerful enough.
Regards
Pete

kevplumb · 19 Feb 2005

pappleyard said:
Help
Just had a new Alpha cd24s fitted with a pessurised cylinder.Have tried balancing and bleeding the system but the rads only just get warm not hot.I have three bathrooms and 18 rads,Is this boiler powerful enough.
Regards
Pete

get the installer back it should have been set up properly

PEDANTICVINDICTIVEMAN · 19 Feb 2005

Whats the Kw ouput of the boiler ?? and yes do what kev said get em back, you paid for it all didn't you ?

pappleyard · 19 Feb 2005

I haven't paid them yet
but they say The rads upstairs need to be turned down so the downstairs one get the full flow.whch I think is rubbish so I need some ammo to get them to fix it
The boiler is 80000btu
Regards
Pete

kevplumb · 19 Feb 2005

so tell them in no uncertain terms your not going to till its right

PEDANTICVINDICTIVEMAN · 19 Feb 2005

For a "very" rough guide, 18 rads at say 5000btu a peice average is 90,000btu plus say 8000btu for tank is 98,000btu, with a large house I take it they have done it in 2 zones to comply with part L so I would think that and with a cylinder stat and TRVs it should just about cope, what calculations did they show you with the quote regarding heat losses and how many btus required for each room ??

kevplumb · 19 Feb 2005

ped they didnt even balance the system

heat loss calcs

part l

pleeeeeese

boiler is prob on a 15mm supply

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Alpha cd24s

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