E
evets51
Hi, I've got an Intergas system boiler on a system with mini-bore piping. Had quite a lot of trouble as when it was first installed 1.5 years ago, the powerflush done at installation time didn't work (was done from one of the radiator pipes which being mini-bore didn't allow for enough pressure). Result was the house never got hot, had two further engineers out and then the system re-flushed by someone who specialises in mini-bore flushing and did it off the main pipe out of the boiler. At the end of the process they showed me the sludge removed and demonstrated the flow that was now being achieved - they also guaranteed their work and offered to do a second flush for free if anyone could find any blockages in the system, so I'm happy it was done correctly this time.
The house now gets hot as do all the radiators - problem is it takes almost an hour for the radiators to get to full temp. All 3 engineers I've had out have said there seems to be something funny with the boiler in that when heating the system up from cold, it doesn't fire constantly - it will fire for a minute or two then cut out for another minute or two. It still does this now.
Intergas no longer have an agent in my area and are going to have to send someone in from a fair distance away. Over the phone they've told me that the boiler is designed to do this so that it can maintain a 20 degree differential between flow and return to aid the condensing process. They recommended that I turn the power down and try that (its set to maximum usually) - I turned it down to 65% as recommended and this made no difference. Their argument seems to be that if the return flow is more than 20 degrees cooler than the out flow, the boiler will stop firing to remain efficient. That's all well and good when the radiators are hot, but surely seems wrong if it means its taking an hour to get my radiators hot? Or is this just something I have to live with?
The house now gets hot as do all the radiators - problem is it takes almost an hour for the radiators to get to full temp. All 3 engineers I've had out have said there seems to be something funny with the boiler in that when heating the system up from cold, it doesn't fire constantly - it will fire for a minute or two then cut out for another minute or two. It still does this now.
Intergas no longer have an agent in my area and are going to have to send someone in from a fair distance away. Over the phone they've told me that the boiler is designed to do this so that it can maintain a 20 degree differential between flow and return to aid the condensing process. They recommended that I turn the power down and try that (its set to maximum usually) - I turned it down to 65% as recommended and this made no difference. Their argument seems to be that if the return flow is more than 20 degrees cooler than the out flow, the boiler will stop firing to remain efficient. That's all well and good when the radiators are hot, but surely seems wrong if it means its taking an hour to get my radiators hot? Or is this just something I have to live with?