User guide

34
How the pressure balancing principle operates
Mira CombiForce 415 pressure balanced shower controls automatically adjust for
variations in inlet pressures. This will maintain a constant outlet temperature
provided the inlet water temperatures remain stable.
The Mira CombiForce 415 is not a thermostatic shower control and does not sense
supply temperature variations. Therefore, inlet water temperatures especially the hot,
must remain relatively constant.
Equal Hot and Cold Pressure
The diaphragm is in the centre.
Low Hot and High Cold Pressure
Diaphragm deflects towards hot inlet and
restricts cold entry.
Cold Water Pressure Loss
Diaphragm moves to close hot inlet.
High Hot and Low Cold Pressure
Diaphragm deflects towards cold inlet
and restricts hot entry.
Hot
Cold
Hot
Cold
Hot
Cold
Hot
Cold
Water
Loss