22 /EN
Closed or Pressurized System (direct from the water network system): regarding the
heater's water supply, we recommend installing a relief valve (included) at the hot water
outlet, calibrated at (0,68 MPa) (7 kg/cm
Use the equipment's certified piping, which is resistant to pressure and temperature.
Before using the appliance, the tank should be filled with water and emptied to eliminate any
possible residual impurities.
IMPORTANT:
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 7,13 kg/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. 4
Air tubes
Water storage
tank
Hot water outlet
) (100 psi). See Fig. 5.
2
when there is excessive pressure, water exits through the relief valve. This is a normal
Open System
NPT adapters
(included)
Union nuts
(not included)
(0,7 MPa)
2
Cold-water inlet
LÉVITTAS
Drain valve
(not included)
Water supply valve
(not included)
Air tubes
20 cm
at least