35
3-6
3-7
3-10
3-8
3-5
3-9
3.2 PRODUCT INSTALLATION.
1 - Take the water heater to the installation
premises.
2 - Cut open the packaging along the dotted
lines.
3 - Separate the water heater from the pallet and
place it where the plumbing connection is.
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 water
heater to be secured to the floor using the
fixing attachments provided (Fig. 3-5).
4 - Adjustment of air intake and outlet vents.
• Remove the screws from behind each of the
adjustable outlets, with a screwdriver (Fig.
3-6).
• After removing the clamping screws, the
outlets may be rotated through 360° to help
install the product (Fig. 3-7).
• To aid correct positioning of the ducts on
the adjustable outlets, a specific position is
required (Fig. 3-8) to extract the outlets from
their housing.
Warning:
the configuration shown in Fig. 3-10
is forbidden: the device draws in the exhaust air,
which is colder.
This phenomenon, called recirculation, signif-
icantly reduces the performance of the device.
3.3 PLUMBING CONNECTION.
Connection to the cold water intake.
Before connecting the water supply, it is essential
to clean the pipes thoroughly, to avert the risk of
any metal or other particles entering the water
heater tank.
It is obligatory to install a safety device, set to be
triggered at 7 bar - 0.7 MPa (not supplied with the
water heater), size 3/4”, compliant with standard
EN1487 as amended and added, and in any case
compliant with local regulations in force, to be
fitted to the cold water inlet of the water heater.
The safety device must be protected from ice.
Warning:
no plumbing fitting (stop valve, pres-
sure reducer, etc.) must be placed between the
safety unit and the cold water intake to the water
heater, except for a copper pipe.
Connect the safety unit to a drain pipe kept in
the open air, in a frost-free environment, with a
permanent downward gradient, to remove any
expansion water from the heating process, or
drainage water from the water-heater.
The pipes used must tolerate a temperature of
100°C and pressure of 10 bar (1 MPa).
When the inlet water pressure exceeds 5 bar
(0.5 MPa), a pressure reducer is required (not
supplied).
The pressure reducer must be installed at the
beginning of the main distribution network
.
A pressure of 3 to 4 bar is recommended.
Connection to the hot water intake.
Warning:
do not connect the hot water directly
to copper pipes, in order to avoid copper/iron
galvanic coupling (risk of corrosion). It is there-
fore obligatory to fit a dielectric fitting on the
hot water outlet (supplied with the appliance)
(Fig. 3-9).
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) it is strongly advised to fit a
thermostatic controller to the water heater outlet.
This must be set according to the performance
of the material used.
PLUMBING CONNECTIONS FOR COIL
VERSION.
Use of recirculation is not recommended,
especially for the Rapax 300 ErP; 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.
Warning:
do not connect the recirculation spur
directly to copper pipes, in order to avoid copper/
iron galvanic coupling (risk of corrosion). It is
therefore mandatory to fit a dielectric fitting
to the recirculation spur (not supplied with the
device).
