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- 21 Feb 2020
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Hi,
Looking for any (constructive
) feedback on the schematic below. Trying to find a way to make use of multiple heat sources (OV Heat only boiler and Thermal Store with woodburner/solar thermal).
All the major elements except for the UDH are already installed.
Boiler has PDHW and Weather Comp, and the UFH blending valve also has weather comp so in theory I can have 3 different temp circuits heated from the boiler. Excess heat from the TS distributed to radiators before the heat dump radiator (not shown) activates
The plan would be to run PDHW infrequently to top up the thermal store in short sharp bursts - likely with a large deadband on the cylinder stat.
The radiator circuit is essentially 1st floor only so would operate at 6am to 7am and 8pm to 9pm. WC on the boiler set accordingly.
The UFH would be run the rest of time, possibly with a night set-back.
I appreciate UFH should be pressurised and a PHE could be added in to facilitate this but putting that to one side, please point out any potential issues you can see, as it looks to me as though it should work barring airlocks etc. Any feedback from those with a sufficient understanding of the subject would be much appreciated.
Many thanks
Looking for any (constructive
) feedback on the schematic below. Trying to find a way to make use of multiple heat sources (OV Heat only boiler and Thermal Store with woodburner/solar thermal).All the major elements except for the UDH are already installed.
Boiler has PDHW and Weather Comp, and the UFH blending valve also has weather comp so in theory I can have 3 different temp circuits heated from the boiler. Excess heat from the TS distributed to radiators before the heat dump radiator (not shown) activates
The plan would be to run PDHW infrequently to top up the thermal store in short sharp bursts - likely with a large deadband on the cylinder stat.
The radiator circuit is essentially 1st floor only so would operate at 6am to 7am and 8pm to 9pm. WC on the boiler set accordingly.
The UFH would be run the rest of time, possibly with a night set-back.
I appreciate UFH should be pressurised and a PHE could be added in to facilitate this but putting that to one side, please point out any potential issues you can see, as it looks to me as though it should work barring airlocks etc. Any feedback from those with a sufficient understanding of the subject would be much appreciated.
Many thanks
