Drain Water; Exhaust System - BERTO'S 900 Serie Manual De Instrucciones

the rated output of the unit (1mA for power kW) and an
omnipolar switch between the unit and the electric line so
that the switch can interrupt power if the conditions for a
category III overvoltage should occur.
Safety switches can be used.
The omnipolar switch must be close to the appliance, be
approved and have a section suitable to the appliance.
(See TECHNICAL DATA table).
The cable must have features similar to the H07 RN-F type.
The YELLOW-GREEN ground cable must be longer than the
others in the event that, if the cable stopper breaks, the
cable will disconnect after the tension cables.
The YELLOW-GREEN cable must never be broken.
Equipotential
The appliance should be connected to an equipotential
system. The foreseen terminal is located at the front lower
area of the machine. It is marked by a label:
CONNECTION TO THE WATER SUPPLY NETWORK
For the correct operation of the unit, the supply water
should have the following characteristics:
MOD. N°:
Qn
V kW: Hz: 50/60 IPX
- hardness between 3° fH and 6 °fH;
- pH higher than 7,5;
- chlorides lower than 30 ppm;
- conductivity higher than 50 µS/cm;
- inlet pressure between 100 and 300 kPa.
Insert the shut-off valve into the water supply pipe.
If the inlet pressure exceeds 300 kPa, install a pressure
reducer. We recommend using a water softener and a
mechanical filter. Before connecting the parts, let some
water to flow out to clean the pipe of any residuals.

DRAIN WATER

Connect the appliance drain pipe to the network.
ATTENTION. Don't open the drain valve until the
pressure is reduced to atmospheric pressure.

EXHAUST SYSTEM

The appliances must be positioned in suitable areas for
the discharge of the combustible products in respect to
how much is prescribed by the installation's norms. Our
appliances are classified as type "A" gas units (see the
"TECHNICAL DATA" table).
They are not designed to be connected to an evacuation
duct for the discharge of combustible products.
These appliances must discharge the combustible
products into appropriate hoods, or similar devices,
connected to a flue of proven efficiency, or they may be
connected directly to an outdoor vent.
If such an arrangement is not possible, the unit may be
connected to an air exhaust system that leads directly
outdoors, having a capacity no lower than required;
see the "TECHNICAL DATA" table, plus the air exchange
necessary, in order to make operators comfortable.
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