Discuss 2 port valves __________ in the Plumbing Jobs | The Job-board area at PlumbersForums.net
SWL through the end switch of the zone valve is the norm.Ok i thought the actuators provided effective open close mechanisms for the zones, are you saying that the for the SL for the boiler should be wired in series via the 2 port valve?
How can that manifold not provide interlock? Interlock is easily provided by the room thermostats that will be used for each zone. Zone valves are used to separate systems when required. If you have a fully pumped/system boiler then yes a zone valve is required to separate the heating and hot water circuits but if you don't require your ufh to be separated from your radiator circuit then a zone valve isn't required.The manifold controls the temperature of the water & the rooms but what it can't normally do is provide an "interlock" with the boiler which is required by Part L of the Building Regulations.
Effectively what this means is that when the last power head on the manifold closes there must be a mechanism that turns the
Is it a combi or fully pumped system?There is no radiators purely underfloor heating 6 zone each with a programmable stat
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