Revamped my sealed heating system recently and noticed that when system is off, the new pipe layout allows the hot water from the vented cylinder to thermal syphon around the circuit, through the boiler and back into the cylinder coil.
Question is, is it OK to add a single check valve to the coil outlet near the cylinder to stop this reverse cycle?
System comprises a Baxi solo HE condensing boiler, sealed circuit, Y plan (3 way valve - moves to DHW when off) and stored hot water (vented hot water cylinder).
TRV's on all but one radiator where room stat is.
Cheers,
Col
Question is, is it OK to add a single check valve to the coil outlet near the cylinder to stop this reverse cycle?
System comprises a Baxi solo HE condensing boiler, sealed circuit, Y plan (3 way valve - moves to DHW when off) and stored hot water (vented hot water cylinder).
TRV's on all but one radiator where room stat is.
Cheers,
Col