Immergas RAPAX 300 ERP, Предупреждения и инструкция

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3-11
Any corrosion on the threads of the recircu-
lation fitting, due to failure to use the 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 boiler circuit.
Caution:
protect from overpressure caused by
water expansion during heating with a 3 bar
- 0.3 MPa valve, and with a closed diaphragm
expansion vessel (if not fitted in the boiler). The
operating pressure of the circuit must not exceed
3 bar - 0.3 Mpa, and its temperature must not be
higher than 100°C.
Solar circuit connection.
Caution: protect from overpressure caused by
water expansion during heating with a 6 bar
- 0.6 MPa valve, and with a closed diaphragm
expansion vessel. The operating pressure of the
circuit must not exceed 6 bar - 0.6 Mpa, and its
temperature must not be higher than 100°C. A
glycol mixture must be provided as heat transfer
fluid for frost and corrosion protection.
Removal of condensates.
Warning: cooling of the circulating air in contact
with the evaporator leads the water contained
in the air to condensing. The condensed water
flowing down the back of the heat pump must
be removed from the heat pump and conveyed
into suitable plastic pipes.
Depending on the humidity of the air
up to 0.25
l/hr of condensate may form.
The condensate
run-off must not be conveyed into the drain,
since the ammonia fumes that flow back from
the drain could damage the heat exchanger fins
and parts of the heat pump.
It is therefore obligatory to fit a siphon for the
discharge of wastewater (do not use for any
reason the pipe supplied to obtain a siphon)
.
3.4 AERATION CONNECTION.
When the volume of the room where the water
heater is installed is less than 20 m
3
, the appliance
may be connected to air ducts with diameter 160
mm. If these ducts are not insulated, condensate
might form in them during appliance operation.
It is therefore essential to choose insulated air
ducts (Fig. 3-11).
Poor-quality air ducts (crushed, too long, or
too many bends, etc.) may cause a loss of per-
formance.
Flexible ducts are therefore definitely not
recommended .
Caution: if there are connections to the ducts,
adjust fan settings accordingly.
Caution: la Overall loss of load on ducts and
fittings for discharge and intake of air
must be
less than 150 Pa . Calculation of load losses must
be made using the measurement instruments
supplied by the manufacturer, in accordance with
the proposed ducting accessories.
Number of bends
Overall length of the
ducts* with air outlet
and inlet mounted on
wall
0 bend
8 m
1 90° elbow 7 m
2 90° elbows 5 m
(*) semi-rigid ducts
Note: adjustable outlets may allow the use of
ducting bends to be reduced or dispensed with
altogether. For additional information on adjust-
able outlets, see Parag. 3.2.
3.5 ELECTRICAL CONNECTION.
Warning:
the water heater may be electrically
connected only after filling with water.
Warning:
do not apply upstream of the electrical
connection of the water heater a timer or timing
devices that may interrupt the appliance's power
supply.
The water-heater may only be connected and op-
erate on a single-phase 230V AC supply. Connect
the water heater with a cable having conductors
with 2.5 mm² section. Installation shall consist of:
- A thermal magnetic breaker or 16A multi-pole
fuse with contacts compliant with regulations
in force.
- A 30 mA differential circuit breaker.
If the power cable is damaged, it must be replaced
by the manufacturer, the after-sales service
or similarly qualified personnel, due to safety
concerns.
Warning:
earthing is obligatory.
Do not connect the power supply directly to the
electrical resistor.
The safety thermostat the electrical integration
is fitted with must not be tampered with; if re-
quired, it may be repaired/maintained exclusively
by skilled and qualified personnel, according
to the instructions provided by Immergas.
Failure to comply with this clause shall void
the warranty
.
The appliance must be installed in compliance
with the provisions of the regulations in force.
Installation with connection to a Plus boiler
(model “SOL”).
In the “SOL” version, the internal heat exchanger
may be used in alternative to Solar connection,
to connect a boiler.
There is a pre-arrangement for electrical connec-
tion to the boiler, to be made through terminals
C1 and C2 (clean contact); this contact might be
placed in series with the NTC probe connection
of a Plus (although this will lead to DHW probe
anomaly on the boiler - until there is no demand
and the probe is therefore interrupted).
The boiler is triggered with intake air tempera-
tures outside the correct RAPAX operation range,
or if the BOOST mode is active.
Photovoltaic self-consumption contact.
The water heater is equipped with a contact to
fully exploit the electricity produced by the PV
system, in order to accumulate thermal energy
within the boiler (self-consumption).
Having an inverter / electronic device which
supplies a signal when PV production exceeds
a certain value, when this contact is closed the
water heater is triggered in heat pump mode
to heat DHW up to 62 °C, unless programmed
otherwise.
When the photovoltaic contact is opened, the
system goes back to the previous settings only
after 30 min., to avoid alternating operation
caused by clouds or temporary shadows.
The ducts must be fitted to the
adjustable air intake and outlet
vents.