6 720 607 845 (2015/05)
12 | Installation
If these conditions cannot be met, a different location must be
selected for the gas intake and evacuation.
Surface temperature
The maximum surface temperature of the heater is less than 85
°C, with the exception of the combustion gases evacuation
device. No special protection measures are required for
flammable construction materials or built-in furniture items.
Air intake
The place where the heater is to be installed must have an area
of air supply according to the table.
The minimum requirements are listed above; however,
each country's specified requirements must also be
respected.
5.3 Heater mounting
▶ Remove the temperature/flow selector and the power
selector.
▶ Unscrew the front fixing screws.
▶ With a simultaneous movement towards you and upwards,
release the front of the two lugs from the back.
▶ Fix the heater vertically, using the provided screw hooks
and plugs.
5.4 Water connection
It is advisable to purge the installation beforehand, because the
presence of dirt may reduce the flow and, in extreme cases,
cause a blockage.
▶ Identify the cold water pipe (Fig. 11, [A]) and the hot water
pipe (Fig. 11, [B]), so as to avoid any possible mis-
connection.
▶ Connect the water pipes to the water valve using the
provided connection accessories.
Fig. 11 Water connection
5.5 Hydrogenerator operation
The hydrogenerator (hydrodynamic generator) is inserted in
the water circuit between the water valve and the heat
exchanger. This component has a turbine that rotates when
water flows past its blades. This movement is transmitted to an
electric generator which powers the heater ignition unit.
The electrical voltage value supplied by the HDG is between
1,7VRMS and 2,2 VRMS AC. In this way, there is no need for
batteries.
5.6 Gas connection
CAUTION:
Ensure that the extremity of the evacuation
pipe is placed between the ledge and the ring
of the flue.
Heater Minimum useful area
WR8G
60 cm
2
WR11G
Table 7 Useful areas for air intake
CAUTION:
Never support the gas heater on the water or
gas connections.
It is advisable to install a non-return valve on
the supply side of the heater to avoid problems
caused by sudden changes in supply pressure.
DANGER:
If local regulations are not follow exactly, a fire
or explosion may result causing property
damage, personal injury or loss of life.
Only use accessories recommended in this
manual.
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