14
system; do not open the gas
cylinder valve until repair is
complete.
• After check is complete, make
sure to turn the test valve back
(90 degrees counterclockwise
until it stops) and replace the
protective cap.
• Screw the threaded cap back
onto the test valve.
Making sure the
gas-flow monitor is
working properly
The functionality of the gas-flow
monitor is directly related to how
the gas pipe was installed. For
this reason, it must be checked
individually for every type of ve-
hicle. This test must therefore be
a permanent part of the design
procedure! We also recommend
a functional test as part of series
production in order to counteract
negative effects caused by
any changes to the installation
procedure.
• Open all stop valves.
• Remove the first heating unit
from the line and close the line
temporarily.
• Bring the gas system into
operation (see „Operating
instructions”).
• Open the temporary seal. Gas
may flow out for only a short
time before the gas-flow
monitor is triggered.
• Screw the heating unit onto
the gas line.
• If you have more than one
heating unit, you must perform
the test separately for each
one!
• Conduct the leak test (see
„Checking the low pressure
area for leaks”).
Accessories
High pressure hoses
(with hose-break safety device)
see page 54 – 55
1.5 meter connection hose
for the connection of external
gas cylinders
– connection G.5 for Germany –
(part no. 50020-61300)
Replacement gaskets
for high-pressure connection,
M20 x 1.5 (G.13);
(part no. 50020-76300)
DuoComfort
Changeover valve for the
two-cylinder system
(part no. 51500-01)
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