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.
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/domestic_hot_water_systems.htm#Direct%20boiler%20system : . There's no thermostats on the system it's just time based and the boiler runs both the Central Heating and hot water.
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