Quite clever
New boiler day
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Originally posted by paulockenden View PostNot sure whether to do this via the immersion, or from the boiler (the guys are also connecting the coil in the tank to the heating side of the boiler via a zone valve. I thought I'd re-use my existing Evohome DHW kit to monitor/control this.
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BTW, plumbers couldn't believe the existing setup here. 1950s house. Inch and a quarter hot and cold pipes from the tanks in the loft, two inch overflow. They said it's the kind of setup you'd expect to see in a school, not a domestic property (it's not an especially big house). We now know why it took so long to get hot water to the kitchen tap!
I said they could have the scrap, which helped!
P.
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Originally posted by paulockenden View PostNope. Combi. But with (when the sun's shining) hot water being fed to the boiler on the DHW side, so the boiler doesn't have to add much/any heat.
Not all boilers allow this, but Intergas is fine with up to 60 degrees.
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Originally posted by chrisgare View PostI was told that new regulations demand a 22mm gas pipe to the boiler. My meter is on the outside of the house but luckily it is near the boiler. Unfortunately, my electric meter is on the opposite side of the house so it was not possible to 'earth' the gas pipe which caused an issue when I had to update the earthing cable around the fuse box as I refused to have a cable around 3/4 of the outside of my house or have the whole ground floor up! It ended up as a recommendation in the certificate only.
Note: dty I can't send you a private msg as you private msg box is full it seems.
22mm pipe is not a regulation across the entire boiler industry
Worcester instructions require you to have 22mm for a 24 ri but you always calculate pipe size depending on what boiler you have
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The size of the gas main is largely dependant on the distance from the meter and the size of the boiler during operation. I needed a 28mm pipe which was reduced to 22mm and then finally 15mm to enter the boiler. But that was to satisfy the full 38Kw load. I run my boiler at 18Kw, which doesn't need the 28mm, but it's installed, should it be needed. And it's not just diameter and length of pipe that matters, every angle and bend also needs to be taken into the calculation.
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Originally posted by darrendobson View PostChris did they really only flush for 30 mins? That is not sufficient. your system looked in bad condition judging by that magnacleanse
22mm pipe is not a regulation across the entire boiler industry
Worcester instructions require you to have 22mm for a 24 ri but you always calculate pipe size depending on what boiler you have
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