10/2016 - Art. Nr. 4200 1016 3901A
29
en
Assembly
Liquefied Petroleum Gas operation
Electrical connection
VR4625
MB-DLE 407
Setting the ionisation probe and
ignition electrode
See diagram
Diagram 1:
Standard setting
Diagram 2:
Burner head setting for older heating
boilers with tendency toward CO
emissions
• Fit the two plates
C
between baffle
plate
A
and natural gas shutter
D
.
Liquefied Petroleum Gas operation
For operation with Liquefied Petroleum
Gas, it is necessary to replace the
natural gas shutter with a Liquefied
Petroleum Gas shutter secured to the
equipment plate.
To do so:
• Remove gas head (see Maintenance).
• Loosen baffle plate
D
and remove
natural gas shutter.
• Install Liquefied Petroleum Gas
shutter
GP
with stamp facing upwards
and screw on baffle plate tightly.
• Refit the gas head.
Electrical connection
The electrical installation and
connection work must only be carried
out by an authorised electrical specialist.
All applicable rules and regulations must
be observed.
This burner contains electronic
components; it is advisable to connect a
type A FI multipole switch upstream of
the system to detect error currents with
a direct current component.
• Check to ensure that the power supply
voltage is as specified (230 V, 50 Hz)
•
Burner fuse: 10 A
The neutral conductor must have the
same electrical potential as the earth
conductor.
Otherwise, power supply to
the burner must include an isolating
transformer and appropriate protection
(30 mA circuit breaker and fuse).
The burner and heat generator (boiler)
are connected by a 7-pin Wieland
connector
1
.
To ensure that the burner operates
correctly, please respect the
polarity of the conductors when
connecting the 7P connector.
It must be possible to isolate the burner
from the network by means of an all pole
switch, complying with the standards in
force.
Main gas safety valve (Switzerland)
electrical connection
• The gas safety valve (installation site)
is located on connector
C
.
Compact burner unit electrical
connection
• The compact gas unit is connected via
two connectors prewired to the burner
terminal block.
• Connect connectors
A
and
B
to the
corresponding equipment connectors
on the compact gas unit and secure
using the screws.
Connector
A
: Gas pressostat
Connector
B
: gas valve
