13
2-6
2-7
2-10
2-8
2-5
2-9
2.2 PRODUCT INSTALLATION.
1 - Take the water heater to the place of installa-
tion.
2 - Open the packaging.
3 - Separate the water heater from the pallet and
place it next to the hydraulic connection.
The water heater must be installed on a
smooth and level surface (± 1°)
.
If the surface is not level, the position
must be adjusted using the levelling feet.
Unless this is done, there could be problems
with removal of condensates, leading to
icing up.
It is a mandatory requirement (in accordance
with article 20 of EN 60335-1) for the boiler
to be secured to the floor using the fixing
attachments provided (Fig. 2-5).
4 - Adjustment of air intake and outlet vents.
• Remove the screws from behind each of the
adjustable outlets, with a screwdriver (Fig.
2-6).
• After removing the clamping screws, the
outlets may be rotated (through 360°) to help
install the product (Fig. 2-7).
• To aid correct positioning of the ducts on
the adjustable outlets, a specific position is
required (Fig. 2-8) to extract the outlets from
their housing.
N.B.:
the configuration shown in Fig. 2-10 is
forbidden: the device draws in the exhaust air,
which is colder.
This phenomenon, called recirculation, signifi-
cantly reduces the performance of the appliance.
2.3 HYDRAULIC CONNECTION.
Connection to the cold water inlet.
Before connecting the water system, it is essen-
tial to clean the pipes thoroughly, to avert the
risk of any metal or other particles entering the
boiler tank.
It is mandatory to install a safety device, set to
be triggered at 0.7 MPa (7 bars) (not supplied
with the water heater), sized 3/4”, compliant with
standard EN1487 as amended and added, and in
any case compliant with local regulations in force:
this safety device is to be fitted to the cold water
inlet of the water heater and must be protected
against freezing.
Note:
no hydraulic fittings (stop valve, pressure
reducer, etc.) must be placed between the safety
unit and the cold water inlet of the water heater,
except for a copper pipe.
Connect the safety device to a drain pipe kept in
the open air, in a frost-free environment, with
a permanent downward gradient, to remove
any expansion water generated by the heating
process or drainage water coming from the water
heater itself.
The pipes used must withstand a temperature of
85°C and a pressure of 1 MPa (10 bar).
When the inlet water pressure exceeds 0.5 MPa (5
bar), a pressure reducer is required (not supplied
as standard).
The pressure reducer must be installed at the
beginning of the main distribution network
.
A pressure of 0.3 to 0.4 MPa (3 and 4 bar) is
recommended.
Connection to the hot water inlet.
Note:
do not connect the hot water directly to
copper pipes, in order to avoid copper/iron gal-
vanic coupling (risk of corrosion). It is therefore
obligatory to fit a dielectric fitting on the hot wa-
ter outlet (supplied with the appliance) (Fig. 2-9).
Any corrosion on the threads of the hot water
outlet fitting, due to failure to use the fitting
supplied, shall void product warranty
.
In the event pipes in synthetic material have been
used (e.g.: PER, multilayer...), we strongly recom-
mend installing a thermostatic control device
at the exit side of the water heater and set it ac-
cording to the performance of the material used.
PLUMBING CONNECTIONS FOR COIL
VERSION.
Especially for Rapax 300 V3 the use of recircula-
tion is not recommended; this type of installation
may cause water destratification in the tank,
leading to increased use of the heat pump and
electrical resistor.
Connection to the recirculation fitting.
N.B.:
do not connect the recirculation fitting
directly to copper pipes, in order to avoid cop-
per/iron galvanic coupling (risk of corrosion).
It is therefore mandatory to mount a dielectric
system to the recirculation fitting (not supplied
as standard with the device).
Any corrosion on the threads of the recircu-
lation fitting, due to failure to use the above
fitting, shall void product warranty
.
N.B.:
if recirculation is not used, close the fitting
with the “cap + gasket” set (supplied with the
appliance).
Connection of the primary circuit of the boiler.
N.B.:
protect from overpressure caused by water
expansion during heating with a 0.3 MPa (3 bars)
valve, and with a closed diaphragm expansion
vessel (if not fitted in the boiler). The operating
pressure of the circuit must not exceed 0.3 MPa
(3 bars), and its temperature must not be higher
than 85°C.
