Calorex PRO 40 L Manual De Instalación Mantenimiento Y Operación página 18

18 / EN
IMPORTANT: in the open system, DO NOT INSTALL the included relief valve, because it
could cause a loss of line pressure.
Closed or Pressurized System (direct from the water network system): (regarding the
heater's water supply, we recommend installing a relief valve (NOT INCLUDED) at the hot
water outlet, calibrated at (0,68 MPa) (7 kgf/cm
IMPORTANT: when there is excessive pressure, water exits through the relief valve. This is
a normal mechanism and does not mean the heater has a failure. Avoid undue water
spills by installing a drainage tube at the relief valve exit towards the drains.
Maximum operating pressure of 0,7 MPa (7,13 kgf/cm
We recommend checking the relief valve (included) at least once a year, to make sure
it is in good working condition.
Open System Installation Diagram
FIG. 3
Air tube
Cistern
Hot water outlet
NPT Adapters
(included)
Coupling Nuts
(Not included)
) (100 psi).
2
)
2
Air tube
Cold-water inlet
Drain valve
(Not included)
To the open drain
Never connect this outlet
to your plumbing system
Water supply valve
(Not included)
20 cm
At least