We have an upstairs shower room with an electric shower I want to change this for a Thermostatic Shower.
We have an old combi boiler which which has an output of 8 -10 lpm DHW flow I will be changing this for a new boiler a worcester bosch Greenstar 42CDi which has a quoted DHW figure of 17 lpm.
The existing pipework is 15mm bore and the shower is approximately 2.4 meters above the boiler, will this new boiler give us satisfactory flow rates etc to have a good water pressure at the shower head or do we have to look at another solution.
My new Potterton Promax 28 HE+ condensing combi delivers 11.7 litres/min DHW at 64 deg C.
This delivers to a MIRA ELEMENT EV blender shower, from its wall-mount in the garage, to the first floor bathroom, via 15 mm copper and thro' washing-machine ball-valves.
This is almost as copious as the power shower we used to use. The combi needs 2 bar water main pressure.
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