TOO MUCH PRESSURE?
I recently re-routed the PRV discharge from a bottle to the shower tray, since then it seems to discharge for about 30 seconds or more following use of a hot tap. The PRV is sited at the base of the (vertical) calorifier, is this okay? Diagrams seem to have it at the top.
BELLPUSH, via email
TONY REPLIES... I think your pump cut-out pressure is too close to the PRV opening pressure, so when you close the tap, the inertia of the water through the pipes against the closed tap momentarily raises the pressure sufficiently to open the PRV. Adjust the pump cut-out pressure a little.