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I have had to replace most of the half moon versions due to main exchanger leaks in the last 3 or 4 years. don't expect this one to last much longer. might be best to get it changed at the same time as sorting out the issues. the current replacement condensing version fits the same hole and...

I've sent the guy a message, i have a lot of these setups in norfolk running on low loss headers. Gianonni exchanger has a lot of resistance and is normally only able to cope with about 12 rads max without some fine balancing. putting a low loss header in with a 8m pump normally will be fine...

check boiler flow temperature. reduce it to 65 degrees. will take longer to heat the hot water but it won't be as hot.

Are you telling me that you don't cover the basic safety checks on an open vented system

ring gassafe and get them to come and inspect. they will force the original installer correct all this work FOC

Yes because when the nest calls for heat the boiler maybe only pumping around a couple of rads on the top floor. once the boiler flow temp is reached it goes into a waiting period for a few mins before it starts all over again. Balance the rads, don't worry about the auto bypass ( if system...

looking at the pipework it looks like the feed is before the vent. with a pump on speed 1 this may work ok. I'm guessing when he tried to max rate the boiler it kept overheating so he increased the pump speed, not realising the feed and vent are plumbed the wrong way round and now the extra flow...

I would be checking that the rads are balanced first. Many installers will leave the system with rad lockshields all fully open. Should be balanced.As a quick set up ground floor open 1.5 turns, 1st and second floors only open 1.0 turns. Also check that the auto bypass valve ( if it has one...

what are the distances from your concerns. It could be a tuffa tank which has internal fire protection!

i have loads of both. i would go with the worcester with the worcester ct200 internet controls. does everything. weather comp, tells you how much gas used etc

look in the cupboard with your hot water cylinder

would love you to be in front of a judge and explain yourself

most likely the motor coil needs replacing. you can test using a multimeter. probably got a 4uf coil. if reading is more than 10% below it needs changing

If the fused spur is above 2200mm from the floor then it’s ok as it is classed as outside zones

Best option is an unvented cylinder and an accumulator to ensure enough flow rate for all showers

Finding this a problem occasionally with people choosing to have the premium heating oil. The additive combined with the increased levels of fame in kerosene causes the moisture and debris in the base of the tank to drawn in to solution. This causes the filters to get blocked much quicker. When...

sounds like loose or some wires not connected. i would be looking at the orange from the hot water zone valve. as i guess in the morning the heating is also on, and in which case would call the boiler to operate but in the afternoons the heating maybe up to temp

H2panel.co.uk they have a solution that allows the use of mixed sources of heat with a single coil

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