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1.4 HYDRAULIC CONNECTION.
Attention: in order not to void the heat primary
exchanger warranty, before making the boiler
connections, carefully clean the heating system
(pipes, radiators, etc.) with special pickling or
de-scaling products to remove any deposits that
could compromise correct boiler operation.
A chemical treatment of the thermal system
water is required, in compliance with the
technical standards in force, in order to protect
the system and the appliance from deposits (e.g.,
limescale), slurry or other hazardous deposits.
Water connections must be made in a rational way
using the couplings on the boiler template.
boiler safety valve outlet must be connected to an
appropriate drain. Otherwise, the manufacturer
declines any responsibility in case of ooding if
the drain valve cuts in.
In order to meet the system requirements
established by the regulations in terms of
pollution of drinking water, we recommend
installing the IMMERGAS anti-back ow kit to be
used upstream of the cold water inlet connection
of the boiler. It is also recommended that the heat
transfer uid (e.g. water + glycol) entered in the
primary circuit of the boiler (heating circuit),
complies with the local regulations in force.
Attention: to preserve the duration of appliance
e ciency features, in the presence of water whose
features can lead to the deposit of lime scale,
installation of the "polyphosphate dispenser" kit
is recommended.
1.5 ELECTRICAL CONNECTION.
e NIKE MYTHOS 24 4 ERP boiler has an
IPX4D protection rating for the entire appliance.
Electrical safety of the appliance is reached only
when it is correctly connected to an e cient
earthing system as speci ed by current safety
standards.
Attention: Immergas S.p.A. declines any
responsibility for damage or physical injury
caused by failure to connect the boiler to an
e cient earth system or failure to comply with
the reference standards.
Also ensure that the electrical installation
corresponds to maximum absorbed power
speci cations as shown on the boiler data-plate.
Boilers are supplied complete with an "X" type
power cable without plug.
e power supply
cable must be connected to a 230V ±10% / 50Hz
mains supply respecting L-N polarity and earth
connection;
, this network must also have a
multi-pole circuit breaker with class III over-
voltage category.
POWER SUPPLY CABLE
CAVO ALIMENTAZIONE
When replacing the power supply cable, contact a
quali ed company (e.g. the Immergas Authorised
A er-Sales Technical Assistance Service).
power cable must be laid as shown (Fig. 1-3). In
the event of mains fuse replacement on the P.C.B.,
use a 2A quick-blow fuse. For the main power
supply to the appliance, never use adapters,
multiple sockets or extension leads.
1.6 REMOTE CONTROLS AND
ROOM CHRONO THERMOSTATS
OPTIONAL .
e boiler is prepared for the application of room
chrono-thermostats or remote controls, which
e
are available as optional kits. (Fig. 1-4)
All Immergas chrono-thermostats are connected
with 2 wires only. Carefully read the user and
assembly instructions contained in the accessory
kit.
• On/O digital chrono-thermostat.
thermostat allows:
- set two room temperature value: one for
daytime (comfort temperature) and one for
nighttime (lower temperature);
- set a weekly programme with four daily
switch on and switch o times;
- select the required operating mode from the
various possible alternatives:
- manual mode (with adjustable temperature);
- automatic mode (with set programme);
- forced automatic mode (momentarily
changing the temperature of the automatic
programme).
e chrono-thermostat is powered by two 1.5V
LR 6 type alkaline batteries.
• Comando Amico Remoto Remote Control
V2
V2
Device
(CAR
) with climate chrono-
thermostat function. In addition to the
functions described in the previous point, the
V2
CAR
panel enables the user to control all the
important information regarding operation
of the appliance and the heating system with
the opportunity to easily intervene on the
previously set parameters, without having
to go to where the appliance is installed.
e panel is provided with self-diagnosis to
display any boiler functioning anomalies.
e climate chrono-thermostat incorporated
into the remote panel enables the system ow
temperature to be adjusted to the actual needs
of the room being heated, in order to obtain
the desired room temperature with extreme
precision and therefore with evident saving in
running costs.
e chrono-thermostat is fed
directly by the boiler by means of the same 2
wires used for the transmission of data between
boiler and chrono-thermostat.
1-3
6
CAR
V2
or chrono-thermostat On/O electric
connection (Optional).
e
below must be performed a er having removed
the voltage from the appliance. Any On/O room
chrono-thermostat must be connected to clamps
40 and 41 eliminating jumper X40 (Fig. 3-2).
Make sure that the On/O thermostat contact is
of the "clean" type, i.e. independent of the mains
supply, otherwise the P.C.B. would be damaged.
Any CAR
V2
must be connected to clamps 40 and
41 eliminating jumper X40 on the circuit board,
paying attention not to invert the polarity in the
connections (Fig. 3-2). 3-2). Connection with
the wrong polarity prevents functioning, but
without damaging the CAR
be connected to one remote control.
Important: if the CAR
V2
arrange two separate lines in compliance with
current regulations regarding electrical systems.
e chrono-
No boiler pipes must ever be used to earth
the electric system or telephone lines. Ensure
elimination of this risk before making the boiler
electrical connections.
e operations described
V2
e boiler can only
remote control is used,
1-4
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