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raesene raesene is offline
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Default Hot water problem after drain down

Hi,

I've got a problem with the hot water in my house which I'd really
appreciate it if anyone could shed some light on.

Background -

House is ~20 years old and all I know about the boiler is it's a Baxi
and I think from the piping that it's a direct boiler system as the
description I found here seems to fit
http://www.diydoctor.org.uk/projects...er%20s ystem:
.. There's no thermostats on the system it's just time based and the
boiler runs both the Central Heating and hot water.


Problem -

I drained down the water today to have a look at a problem with a
shower valve. I did this by turning off the boiler at the control then
closing the mains water valve and running the hot and cold taps in the
bathrooms till they ran out.

After looking at the shower I opened the mains water valve and left it
to refill the tanks. Now the cold water system is working fine, but
there doesn't appear to be any hot water coming from the taps.

The central heating works fine and the pilot light on the boiler seems
lit. If I check the pipes running to the hot water tank when the hot
water is on they seem to be warm to the touch and also I've checked the
small cold water tank at the back of the hot water tank (which seems to
feed the tank) and there is water in that ok.

I'm guessing that there's something obvious that I'm missing here, so
if anyone can point me in the right direction that'd be great


Thanks

Rory