PoP wrote in message . ..
On Fri, 09 Apr 2004 02:26:26 GMT, (Lurch)
wrote:
Is it safe to leave everything off for the next few days ? my concern here
being the pilot light in the central heating boiler - even though the
central heating is switched off.
You can switch it on.
A doomsday scenario might be if he got a slow 2nd leak in the CH
circuit, perhaps in a pipe joint under the ground floor, where water
in the circuit dumped. If the CH system is not replenished then the
possibility exists that the boiler might fire up on empty.
I presume this could cause damage to the boiler?
Not really - if the house is only 4 years old the system will be
indirect so isolating the hot water cylinder will not prevent the
heating circuit from getting topped up correctly. Also the OP said he
had two tanks in the loft - one would be for the CH system.
snip
Unless the plumbing is such that the HW tank feeds taps from the top
end, in which case oh-oh.
Um, I have yet to find a (working) system that feeds the hot taps from
anywhere other than the top of the cylinder. You need to drain the
cylinger from the drain cock which should be roughly where the cold
water feed from the isolating valve enters the cylinder. You will need
some hose and some way to get the water away. It may be worth getting
a friend or family member with some plumbing knowledge to help out -
or if you have to get a plumber in! You can't empty the cylinger from
the hot taps.