Recent content by snb1

you say the landlord has had worcester out?? are you sure it is worcester and not the landlords engineer who wears a worcester jacket? ( most engineers that fit worcester boilers have the worcester work wear.) There is definately a problem with the boiler and worcester would not leave it like...

put both lives in the same terminal. there is link in the bdr unit that just creates 2 live terminals to make life easier

What you are experiencing i would expect from the way you are trying to run the system connected to an old gravity coil cylinder. Your boiler is 24kw and the gravity coils at best around 6 to 8kw. the reheat time would be around an hour from cold (10 to 60) and use about 6kw of gas. The flow...

that cylinder is an ACV smart E plus 300 . it is a tank in tank design cylinder.

5000lt a year is a lot even if short cycling. That’s around 50000kw/yr. with that being the amount dropping output down to 26kw should be small enough to heavily reduce the cycling. Yes a 100lt buffer tank would also help reduce cycling.

is this a new install? if yes what was there before?

it won't fire up with the lever in manual because that only partially opens the valve and the valve needs to open fully for it activate the microswitch to send the demand for the heating

think you have forgotten the HW off wire connection in the wiring for a y plan. that why it works with the hw demand on until the water reaches temp. check that you have 230v on the grey wire when there is no demand for hot water but heating is demanding. I have attached a copy of the...

reduce boiler output in D0 from 18kw to 12kw. should solve it. boiler is probably oversized for the house size and the flow around the system is not great enough to getthe heat away from the boiler. The boiler reaches temp and goes into anti cycling for 20 mins before it repeats. If you find...

I'm hoping that your boiler was installed by an OFTEC registered engineer and has been properly commissioned. If so give OFTEC a ring. They should be able to get an inspector out to check the installation. They can force the engineer to remove the boiler and fit the correctly sized boiler, or...

most likely a bit of rubbish ( biological growth and corrosion)has made through the filters to the fuel nozzle. your fix will last a little while but will almost certainly need a new nozzle and then it will need setting up with an anaylser

if its indirect just leave it un connected. ( it is purely an independant coil) if this is an unvented cylinder then you should be working on it as you need to have a current G3 qualification as it is deemed as dangerous as gas

remember diversity (BS6400-1 only applies if more than 2 appliances fitted )for combi boilers is 0.8 , cookers is 0..4 30*08 11*0.4 24*.8 that only equates to 47.6kw so well within spec

Yes it will be trying to preheat the hot water but sending it round the rads and the Dhw plate.

You can manually select pump speeds 1 to 6 but pump,speed A and B are only used in the auto function. Problem is to get pump pressure of A would require a free flowing primary circuit. My guess is that system will have 22mm primaries. If that is the case then the boiler would only ramp up to...