On Sat, 11 Feb 2006 10:17:55 +0000, Fatboise
wrote:


Just wondering if anybody can help me out here. I have an oil fired
boiler for the central heating and hot water. We've been in the house
for a few months now and we seem to be using a lot of oil and I'm
trying to see if I can get the boiler running more efficiently

Now it's a big house (2600 sq feet) and I understand that a house that
size will be hard to heat. The heating would be on inthe morning for an
hour and in the eveniong for 2-3 hours. There is 15 radiators and the
hot water cylinder. The boiler is 120000 Btu (35Kw) with a 0.65mm
nozzle in the burner.

A few days ago I timed the cycling on the boiler when it was up to
temperature and found that the burner was coming on for 2.5 mins and
then of for approx. 2.5 mins which I thought a bit excessive.

I've tried searching for info but find it hard to find anything on the
boiler cycling question. I had a look at the sedbuk website but don't
have all the measurments to size the boiler - need to find the drawings
again.

Any inputs much appreciated.................

Hi,

Are you able to measure the return temp to the boiler, eg with an IR
thermometer?

cheers,
Pete.