D
Doctor Drivel
Agile said:There is a slight siscrepancy between any combi boiler and your apparent desire to have a 25 li/min shower.
Even a 500 li unvented cylinder will be emptied by your wasteful shower in 20 minutes!
The 937 does not seem to stand up to technical scrutiny on its performance. The natural flow rate of about 15 li/min is augmented by stored heat for what I calculate to be only about six minutes.
I am waiting for Dave who has fitted some to tell us just how long it can actually deliver its rated output of 20 li/min @ 35°C temperature rise.
Part of its secret is that the store is heated up to about 75°C so the 15 li will heat at least twice that volume of DHW.
How is this blended down to 50 - 55C at the taps?