21
MYDENS
COSMOGAS
5 - INSTALLATION
5.14 - Electrical connections: details
f
WARNING!!! The appliance is only electrically
safe when it has been correctly connected to an
efficient grounding, performed as provided for by
the current safety regulations. If in doubt, request
a thorough check of the electrical system by a
professionally qualified technician.
f
WARNING!!! Have a qualified installer check that
the electrical system is suitable for the electric power
required by the appliance, as indicated on the plate.
d
The use of adapters, multiplugs, extension leads,
etc. is prohibited.
l
The appliance must be connected to the main
electrical supply using a three-polar electric cable, with
double isolation, a minimum section of 1.5 mm² and
resistance to a minimum temperature of 70°C.
l
For connection to main electrical supply, a bipolar
switch must be installed near the appliance with a
contact opening distance of at least 3 mm, as envisioned
by the current sector regulations.
l
Respect the polarity between the neutral and phase
wires when connecting the appliance.
a
WARNING!!! Make sure that the water system
and heating pipes are not used as earth points for
the electrical system or telephone lines. This piping
is not suitable for this purpose, serious corrosion
damage would occur in a very short time to the
appliance, piping and radiators.
f
WARNING!!! The appliance is not protected
against the effects caused by lightening.
C
D
C
B
C
A
020025.01.009
Figure 18
A = Control panel box;
B = Electrical connections board cover;
C = Connections cover closing flaps;
D = Electrical connections board;
AL Slave = Slave appliance BUS;
CH = Cascade temperature sensor;
AD = Master appliance BUS;
TA = Room thermostat/chronothermostat/
CR04 remote time control/ COSMOBIT;
0-10 = 0-10 VDC communication;
SE = Outdoor temperature sensor;
SB = Tank temperature sensor;
MF = Alarm output/ Automatic filling;
EP = External pump;
DNC = External diverter valve
(D = Domestic hot water line; N = Neutral; C = Heating
line);
L1 = Appliance power supply line;
N = Appliance power supply neutral:
EARTH SYMBOL = Earth contacts;
020002.01.010
62408190
AL
Slave
CH
21 20 19 18 17 16 15 14 13 12 11 10 9 8
6
5
4
3
2
1
7
AD TA
SE
0-10
SB
MF
EP
D N C
L1 N
Figure 19
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