Water
connection
Link up the water heater’s inlet and outlet with hoses or connections which
resist even more than the working pressure, the temperature of the hot
water which usually reaches or even exceeds 80° C. Therefore, we advise
against the use of any materials which cannot resist such high temperatures.
Screw a “T” piece union to the water inlet pipe with the blue collar. On one
alde of the “T” piece union, screw a tap for emptying the appliance that
can only be opened with the use of a tool (B fig. 1). On the other side of
the “T” piece union screw the safety valve supplied (A fig. 1). This should
be connected to the cold water network via a flexible pipe. Also attach in
the case that the emptying tap should be opened a waste pipe to exit C
fig. 1.
The safety valve has a calibration value of about 8 bar. A slight drip during
the heating phase is quite normal; for this very reason, we recommend
you connect this drain, leaving it always open, to a drain pipe installed
inclined continuosly downwards and place without condensation. In case
of pressure on the network close to the calibration-valus of the valve, it
is needed to apply a pressure-reducer as far as possible from the boiler.
Putting it
into service
and testing
Filling the boiler with the network water is the last thing to do, before
connecting the tension, it is carried out by opening the tap of the central
domestic system and hot-water system till all the air from the boiler is out.
Check visually for any leak; make sure that the position of the autoclave
flange is centred; eventually tighten with moderation the nut E fig. 5, so
connect it, move the switch F from O position to the I position fig. 7.
GB
7
Electrical
connection
The feeding cable (type HO5 V V - F 3x1,5 diameter 8,5 mm) is to be
inserted in the proper hole situated in the back of the apparatus and slide
it until it reaches the housing slot V fig. 5 near the thermostat. To disconnect
the unit from the network use a bipolar, switch conform to CEI-EN standards
(contact opening at least 3 mm., better if equipped with fuses).
The electric connection is carried out directly to the clamps M fig. 5 of the
thermostat.
The appliance must be earthed and the earth cable (which must be yellow-
green and longer than that of the phases) is fixed to the terminal T fig. 5
marked by the symbol . Before starting it working, make sure that the
network tension is in compliance with the rated values of the apparatus.
If the appliance has no power supply cable, it can be connected to
the mains with a rigid or a fixed cable.
Fastening to the wall
Fasten the supporting bracket provided to the wall using screws and
rawplugs of suitable dimensions for the type of wall. Hook the water heater
onto the bracket and pull it downwards to make sure it has been fastened
correctly.
“Open
outlet”
connection
For this type of installation it is needed to utilise suitable watertaps and
carry out the connection as shown in the scheme fig. 2. With this method,
the water heater can operate at any mains pressure. Do not connect a
tap on the outlet pipe since this acts as a bleed pipe.
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