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15
2916089
GB
Electrical system
5.1.2
Electrical wiring factory-set
NOTE:
In case of remote-reset, connect a push-button with a nor-
mally open contact (NA) between the terminal 3 and the neu-
tral of the control box (for example, terminals 15, 16, 17 and
18).
Key to layout (Fig. 16)
CMV
Motor contactor
FR
Flame sensor
I1
Switch: burner off - on
I2
Switch: 1st - 2nd stage operation
MB
Terminal strip
MV
Fan motor
RMO88.53A2
Control box
RT
Thermal cut-out
TA
Ignition transformer
TB
Burner ground (earth) connection
V1
1st stage solenoid valve
V2
2nd stage solenoid valve
VS
Safety solenoid valve
XP4
4 pole socket
XP7
7 pole socket
Fig. 16
20078333
WARNING
The burners leave the factory preset for
400V
power supply.
If
230V
power supply is used, change the motor
connection from star to delta and change the set-
ting of the thermal cut-out as well.
Содержание 143114200
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