"Ellen Rawlinson" wrote in message
om...

Hello! I'm rennovating a house
that I intend to rent out. Essentially
I have two bathrooms, each of which
is going to have a bath with
shower over. I want to be able to run
both showers at once (as there
will be six people in the house), and
my plumber thinks the only way
to do this is with electric showers.

Tell him to stick to drains.

Does anyone know if there's a way
to run two showers (with thermostatic
mixer valves) at the same time
off the one combi boiler I'll be putting in,
or is my plumber right?

He is wrong. Divide and rule. Try two combi's. one doing one shower, one
doing the other. Combine the outlets for the baths to fill them quickly,
using non-return valves and a shock arrestor on the bath side on the
non-return valves.

Have one combi do upstairs heating and one do downstairs. Simple and cheap
and effective. Have each combi have its own gas supply right back to the
gas meter.

Check the mains water pressure and flow. Replace the mains stop cock with a
full-bore stop cock irrespective, and have dedicated 22mm cold supplies to
the combi's from the stop cock. Take the cold supply for each shower off
the combi supply just before the combi. Any pressure fluctuations on that
line will be equal on both cold and hot at the shower.

Combi's are cheap.


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