15
Ref. : CH - 1249 - A - 2
BOILER AND BURNER POWER SUPPLY
Fig. 20
Three-phase
current
Single-phase
current
Single-phase
current
CABLES FITTING
Fig. 21
Control
Control
Burner motor
power supply
CAUTION :
In the case the burner motor is supplied with
three-phase power, control panel single phase supply
must imperatively be taken from one of the phases
supplying the burner motor.
VERY IMPORTANT :
Never connect the burner control box
directly to one of the phases.
N0225300
ELECTRIC CONNECTION
The facility must comply with currently enforced national and
local regulations.Notably, the electric connection of the boiler
requires a sectioning device on each pole with a minimum 3
mm distance between each contact.
For the complete electric connection of the various
types of control panels, refer to the manual specific to
the panel.
The power supply connection terminal strip is accessible after
removing the cover at the back of the panel. It is located in the
lower right corner seen from the back.
Connect the phase to the strip’s L terminal.
The line must be able to withstand an intensity of 6.3A under
230V 50 Hz + Ground (check whether the power of the
pump(s) is compatible).
Apply the electric connection as per the electric diagram in
the instructions. Plan a grounding wire exceeding by 50 mm
in length to the neutral and phase wires for tearing safety.
The burner switch located on the control panel does not
dispense from installing the regulatory wall switch.
In the case of insufficient ionising current due to non compliant
neutral or ground, we recommend adding a circuit isolation
transformer with a power at least equal to 600 VA.
Control panel supply connection terminal strip
The ground socket planned on the connecting termi-
nal strip must be connected as per currently enforced
provisions.
03935-00
Main power supply
230 Vac 50 Hz
(phase imperatively in L)
shunt "UV"
Boiler glove finger
withoud regulation probe
When fitting the capillaries, ensure they are inserted fully
in the glove finger.
1 - Overheating safety thermostat
2 - Heating outlet thermometer
3 - Regulation thermostat
4 - Tube Ø 6
5 - Heating regulation probe
3 - Regulation thermostat 2nd Stage
Boiler glove finger
with regulation probe
02078-01
00229-5
02078-05
2
CM control panel
CE, ECO 5E, ECO7E, ECO8E
control panel
CS control panel
6
Fitting the thermostat bulbs, thermometer (and regulation
probe in option) in the glove finger as shown in the diagram.
Capillaries
Burner
cables
Clamp-
nut A
Earthing
wire
Front
crosspiece
A V
Lower piece
N04156.DSF
Summary of Contents for NXR3
Page 19: ...19 Ref CH 1249 A 2 ...
