Mira 415 Installation And User Manual page 12

11. mains pressurised instantaneous hot water, heated from thermal store,
showers
Packages of this type, fitted with a tempering valve can be used with the
Mira 415. The tempering valve provides a relatively constant hot water
temperature and the 415 pressure balancing valve compensates for system
pressure variations. The Mira 415 supply pressure range is 1 bar to 5 bar.
For pressures above 5 bar a pressure reducing valve will be required, refer to
Figure 4.
figure 4
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