V-09 05/2014 - 20 -
Gas connection
6x1/1 GN: 3/4"
6x2/1 GN: 3/4"
10x1/1 GN: 3/4"
10x2/1 GN: 3/4"
RATIONAL
! mbar
1
20x1/1 GN: 3/4"
20x2/1 GN: 3/4"
! mbar
2
3
Comply with all local gas authority regulations!
Follow installation instructions!
• Check that the gas type supplied is suitable for
the unit.
• The diameter of the pipe must comply with local
regulations
• Inner thread of gas connection: pic. 1,2
• Gas stop valve supplied for each unit.
• Gas connection with gas outlet socket is possible.
• All gas supply connectors must comply with local
regulations.
• The unit must be secured against movement.
• Check the gas supply and gas distribution in the
unit line for leakage. pic. 3
• For documentation of the correct installation our
installation checklist can be used.
• Flexible gas line conform to ANSI Z 223.1 / ANSI
Z21.69
Attention:
• The unit is only to be connected to the gas sup-
ply by a locally approved gas installer. It is vital
to ensure that the gas connection pipes as well
as the connection pipes for the associated gas
metering systems match the stipulated pipe
widths.
• If the flow pressure deviates from the specified
flow pressure (see table), inform the gas authori-
ties. If the flow pressure of natural gas exceeds
12,04 in w. c. (30 mbar), the unit must not be
switched on and the gas supply must be discon-
nected.
• Attention: The gas parts are designed for a maxi-
mum flow pressure of 26,09 in w. c. (65 mbar)
Important!
To ensure that the burner settings made at the factory conform with the actual installation conditions, the
exhaust gas (C0, C0
2
) from the steam and hot-air burners must be analysed during commissioning. The
corresponding values must be documented inside the unit. If the undiluted C0 values are above 1000 ppm,
the burner settings must be checked and if necessary adjusted by engineers trained and certified by the
company.
WARNING
Incorrect connection can engender fire hazard!
Danger to life
Observe local regulation
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