Mira Sprint 7.5 Installation, Operation, Maintenance Manual page 20

Temperature Rise Versus Flow Rate For The Mira Sprint 7.5 kW,
55
50
45
40
35
30
25
20
15
10
2
(i) These curves are for the specified outputs at 240V.
(ii) All Mira Sprint heating elements have a manufacturing tolerance. Thus flow
rates can be above or below those indicated.
(iii) The left-hand scale is temperature rise. (Temperature rise = Showering
temperature minus the incoming cold water temperature.)
Example: For the Mira Sprint 7.5 kW on full power setting with an incoming water supply
at 10°C and a showering temperature at 45°C, the temperature rise is 35°C. The flow rate
is therefore, 3 l/min.
20
8.5 kW and 9.5 kW
9.5 kW
8.5 kW
7.5 kW
3 4 5
Flow Rate (litres per minute)
6 7 8 9 10 11 12