Installation Instructions - Cerbos A5 Manual De Instrucciones

GB
MODELS: A5 – A12 – Q12 – Q15 – A15 – B30
GENERAL REMARKS
A careful reading is recommended in order to achieve the best performance of the product.
The installation is in charge of the customer, the manufacturer is not responsible for the
damages caused by wrong installation and for not following instructions contained within
this manual, in particular:
1. the electric connection has to be in compliance with the relative paragraph
2. the safety valve supplied with the appliance has not to be tempered with or substituted
3. the installation has to be carried out by qualified professional

INSTALLATION INSTRUCTIONS

The range of the water heaters includes models designed for being fitted over the point of
use (OVERSINK) or under the point of use (UNDERSINK) (fig.1-A).
1- Fasten to the w all
Fasten the supporting racket provided to the wall using screws and raw plugs of suitable
dimensions for the type of wall. The appliance has on the back the housing for the hooks
of the bracket. Hook the waterheater to the bracket and pull it downwards to make sure
it has been fastened correctly.
2- Water connection
The appliance is equipped with a safety valve against overpressure adjusted at the value
of 0,8 MPa (8 bar).
For oversink models connect inlet tube with blue collar a "T" piece union, hence, connect
on one side a tap for draining the appliance that can only be operated with the use of a
tool (B fig.1-B); on the other side screw the safety valve (A fig.1-A). For undersink models
screw directly the safety valve to the inlet tube with blue collar.
Don't force the safety valve otherwise you can damage it. Connect the safety valve to
the cold main tube by flexible pipe. If the main supplying pressure is close to 0,4 MPa (4
bar) is recommended the installation of a pressure reducer on the outlet of the water
meter and in any case as far as much is possible form the water heater. A pressure reducer
installed close to the appliance (below 10 m) require the installation of an expansion
vessel on the inlet tube of cold water next the appliance. During the heating phase a
slight drip of the safety valve is quite normal due to the increase of pressure into the
boiler. Hence is necessary to connect the drain outlet of the valve (A fig.2) to a drain pipe
installed inclined continuously downward, place without condensation and always open.
The safety valve against overpressure should be operated regularly in order to remove
limescale and verify the correct operation. Connect the outlet tube of the boiler with red
collar to the services by flexible pipe.
3- Electrical connection
If the appliance is not equipped with electrical cable is necessary connect it to the main
electrical supply with rigid cable for fix connection. Before connect the appliance verify
that the supply tension is right with the appliance value.
In the electric power supply circuit of the water heater must be fitted with a
device assuring the interruption of all poles in the conditions of overvoltage
category III.
For the models A5, A12, A14, B30 the cable has to be inserted in the hole on the plastic
cap, for model Q12 the cable must be inserted into the hole on the back of appliance (A
fig.3).
The electrical connection is carried out directly to the clamps (M fig. 4-5-6) of the
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