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22 / EN
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
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
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 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. 4
Air tubes
Water storage
tank
Hot water outlet
Open system
NPT Adapters
(included)
Union Nuts
(not included)
) (100 psi). See Fig. 5.
2
(0,7 MPa)
2
Air tubes
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
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