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Hi Just swapped out my traditional tank fed HW system for a 35KW combi capable of 14.5 l per min on 35deg temp rise. Incoming pressure and flow rate are ok - 3bar and 15 l per min. 1st DHW tap from combi is downstairs loo and flow is great. As soon as it goes upstairs the DHW flow to the...

Also, going sealed system may not be a good idea for you as your system may not be able to cope with higher working pressure. So just had a chat with my brother in law who is a heating engineer and would likely do the work for me at cost. His advice was almost identical to yours although he...

So it seems I have issues with this system thats about 11 years old. Im renovating the house and am wondering if it would be better in the long run to change this system to a combi boiler. Instant hot water appeals to me with a young family. Reading the pages, one of the things to be aware...

I read the FAQ chris and one of the fixes is to simply turn the pump speed down. This appears to have fixed it for now (down from 2 to 1). Is this a workaround because of an underlying fault or is it a genuine fix? With the pump being new (and incorrectly wired in as it was permanently on...

im not being laid back and take this seriously, but have only been in the house 2 months and the first thing I did was flush the system throught with chemic, which I left in for 3 weeks. Is it a possibility that the pump, which is also fairly new is too powerful, hence turning the speed down...

Hi I inherited a 10yr old system. It was pumping over when I moved in and sludged up. The water was orange so I presume pumping over for some time. I have drained it a couple of times, & cleaned it out but still have the following issue: Only when CH & HW is on at the same time the system...

Folks 2 problems / questons. 1. I have something called a Spartan Mainstream Thermal Store (cant find ANY info anywhere about it) which is about 9 years old. According to the brief operators guide it is preset to store h/w @ 80c . I am assuning this is via the cylinder stat. When heating...

No Chris, its comeing from the storage tank itself.....it sounds like the tank is flexing in and out briefly.

I have a 9 year old system, with seperate boiler. After changing a rad and cleaning out the system, I have the following problem: hot water is fine and the store heats up well. When the Central heating pump comes on, the tank makes 2 noises like air is expanding or something, (sounds like...