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    Sealed system boiler primary flow and return size

    The rads are fed with 22mm from the 2 ports and T off in 15mm to the rad valves
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    Sealed system boiler primary flow and return size

    Will be getting temps and pics later this week Thanks everyone for your help and comments
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    Sealed system boiler primary flow and return size

    Thats it. The two pumps are in series although they are 15 to 20M apart. I balanced the system as follows:- with the boiler on about 65 degrees I set up the UHF manifold. Then with th boiler output at about 80 degrees opened both 2 ports for the radiators so that all three heating...
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    Sealed system boiler primary flow and return size

    BTW. I should mention that the reason for the 4 x 2 ports is that the client wanted independant control over the 3 heating circuits and 1 hot water circuit
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    Sealed system boiler primary flow and return size

    Sorry guys, im not explaining this too well. The 22mm primary flow from the boiler feeds the pre-plumbed pump on the tank. The output from this is in 22mm and split 4 ways to feed the four valves still in 22mm. The tank pump runs when any of the 2 port valves are opened Valve 4 when...
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    Sealed system boiler primary flow and return size

    Hi Andy. The pre-plummed pump is a three speed. Had to run this on 3 to get the rads to work. There is what I would consider excessive water turbulance noise from the airing cupboard. On speed 2 less heat at the rads. By the way, to all who are offering help. I installed an auto air bleeder...
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    Sealed system boiler primary flow and return size

    Cheers Tony. Will get some temperatures this week hopefully. Just to re-cap the valves are about 15M from the boiler so a 30M loop. Looking at the run I would estimate that there are about 6 bends in the flow and return, so 12 in total. If the rule of thumb that one bend is equat to about 1M of...
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    Sealed system boiler primary flow and return size

    Appreciate what ur saying Tony. Got some elekey tricks that im selective who I share them with. Could I ask though, and I appreciate its tricky not seeing the job but do you recon the 22s from the boiler are enough. I have been researching the recomended KW capacities of various pipe sizes and...
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    Sealed system boiler primary flow and return size

    cheers GD. Appreciate the input. I had a similar figure quoted by Tribune but they said this is heating the tank flat out so to speak. With other circuits on the system the pre- fitted gate valve needs to be trimmed to balance the tank against the rads. They recon that 3 to 4 KW should heat up...
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    Sealed system boiler primary flow and return size

    Thanks Pablo. Wouldnt quite say that though. I have a reasonable knowledge. Been at this for 20 years so picked up loads from other trades. Plus reading up on things out of interests sake. I know, I need to get a life !!!!!
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    Sealed system boiler primary flow and return size

    Thanks Tony, Regards BTUs. Lazyness on my part. The client provided me with the rad specs which had the outputs in BTU.
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    Sealed system boiler primary flow and return size

    Thanks for responding. System boiler Worcester CDi 30 with buit in bypass sealed system 9 rads on valve 2 2 rads on valve 3 Valve 4 upnor UFH manifold kit fitted as per spec. Balanced to 43 C for screeded floor The tank is a 210 L Tribune which is supplied with pre-formed pipework...
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    Sealed system boiler primary flow and return size

    1st time on here so hi to everyone. I'm an electrician who on a recent contract had to design and install a bespoke control system for zoned central heating and hot water. Upon comisioning my bit of the system it became apparent that all was not well with the water side of the system. Layout is...
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