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5.4
Checking the system for leaks
Leak test conducted by
the manufacturer
Leak test at the set-up
location (in Germany)
Leak test at the set-up
location (in other coun-
tries)
Pressurized parts
Pressurized parts
HON 512 with HON 650 pilot user manual
Prior to delivery, the manufacturer conducted a pressure and leak test on the gas pressure
regulator as specified in DIN EN 334.
The gas pressure regulator installed in the system must be subjected to a leak test at the
setup location as follows:
Normative basis
Test method
Test medium
Scope of the test
Test equipment
Test pressure
The device installed into the system must undergo a leak test at the set-up location in ac-
cordance with applicable international and national standards.
Risk of serious injury posed by pressurized components moving in an uncontrolled manner
when handled improperly.
If not handled properly or in the event of a defect, gas can escape from pressurized compo-
nents under high pressure and cause serious injuries and even death. Before you start work-
ing on these components:
Close all connections leading to the gas-carrying line.
Establish a depressurized status. Residual amounts of energy must be depressurized as
well.
Risk of injury posed by bursting parts in the event that they are subjected to pressure in
the wrong direction
The device has been designed for a specific direction of flow, which is labeled on the device.
Subjecting the device to pressure in the wrong direction may result in serious injury caused
by bursting parts.
Pressurize the system only on the inlet side.
Transport, installation and start-up
DVGW Code of Practice G 491
Bubble test method
Air or inert gas
All detachable pipe joints
Foam-generating leakage medium
1.1 times the operating pressure (MOP)
50
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