01/2009 - Art. Nr. 4200 1016 3900A
25
Assembly
Liquefied Petroleum Gas operation
Electrical connection
VR4625
MB-DLE 407
Burner boiler electrical connection
The electrical installation and
connection work must only be carried
out by an authorised specialist.
All applicable rules and regulations must
be observed.
• Check to ensure that the power supply
voltage is as specified (230 V, 50 Hz)
• Burner fuse: 10 A.
The burner and heat generator are
connected by a 7-pin connector
1
.
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
Main gas safety valve (Switzerland)
electrical connection
The gas safety valve (installation site) is
located on connector
C
.
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.
en
