View Single Post
  #31   Report Post  
IMM
 
Posts: n/a
Default Recommendation for a thermostatic shower?


"Christian McArdle" wrote in message
. net...
You can regulate the flow on an Mira shower. What are you on about?


We might be talking about different models. She has a single control.


OK. Reading the official Mira 415 instructions:

"Initial anticlockwise movement turns the water on at full flow of cold
water, further
anticlockwise movement increases the temperature. The flow rate is
determined by
the supply pressures at the shower control inlets, or by the effective
output power
of the heater appliance. Flow rates for gas heater appliances can vary
typically
between 8 l/min (winter) and 15 l/min (summer)."

http://www.mirashowers.com/onlinecat...df/p3740_2.pdf

OK, I got clockwise/anticlockwise mixed up. Would you like to explain why
you think a Mira 415 has a flow control?


The older models certainly did have a good range. The newer versions are
obviously limited.

OTOH, I can't see how the flow rate would
be determined by the heater output
without some manually adjusted throttling,


If the pressure/flow is pretyty equal on cold and hot then the appliance can
ramp it up and down.

although the instructions do say
something about having an automatic device
in the combi to throttle when the
flow reduces. Of course, most combis don't
have this feature. They just run cold.


The up market versions do. If this is a problem then flow controls valves
can be inserted in to the combi inlet and cold to the shower. Set to 15
l/min, the combi maximum flowrate, then you will never run cold.