Kohler 18RESNT Installationshandbuch - Seite 20
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1.6.2
Fuel Pipe Size
Ensure that the natural gas pipe size and length meet
the specifications in Figure 1-13 or Figure 1-14.
Measure the pipe length from the primary gas pressure
regulator to the pipe connection on the generator set
fuel inlet. Add 2.4 m (8 ft.) to the measured length for
each 90 degree elbow. Compare the total pipe length
with the chart in Figure 1-13 or Figure 1-14 to find the
required pipe size.
Contact the local LP provider for LP installation
information.
Maximum Pipe Length, m (ft.)
9.2
(30)
30.0
(100)
68.6
(225)
Figure 1-13 12 kW Models, Fuel Pipe Size, Natural
Gas
Minimum Gas Pipe Size Recommendation, in. NPT
Pipe Length,
Natural Gas
m (ft.)
(242,000 Btu/hr.)
8 (25)
15 (50)
30 (100)
1 1/4
46 (150)
1 1/4
61 (200)
1 1/4
Figure 1-14 17/18 kW Models, Fuel Pipe Size,
Natural Gas
20
Section 1 Installation
Pipe Size, in. NPT
3/4
1
1 1/4
LP Vapor
(280,000 Btu/hr.)
1
3/4
1
1
1
1 1/4
1 1/4
1.7 Fuel Conversion
The multi-fuel system allows conversion from natural
gas to LP vapor (or vice-versa) in the field while
maintaining emissions-standard compliance. A trained
technician or authorized distributor/dealer can convert
the fuel system.
WARNING
Accidental starting.
Can cause severe injury or death.
Disconnect the battery cables before
working
on the
Remove the negative (--) lead first
when disconnecting the battery.
Reconnect the negative (--) lead last
when reconnecting the battery.
Disabling the generator set.
cause severe injury or death.
generator set or connected equipment, disable the generator
set as follows: (1) Move the generator set master switch to the
OFF position. (2) Disconnect the power to the battery charger.
(3) Remove the battery cables, negative (--) lead first.
Reconnect the negative (--) lead last when reconnecting the
battery. Follow these precautions to prevent starting of the
generator set by an automatic transfer switch, remote
start/stop switch, or engine start command from a remote
computer.
WARNING
Explosive fuel vapors.
Can cause severe injury or death.
Use extreme care when handling,
storing, and using fuels.
1.7.1
Fuel Conversion
For LP vapor fuel, an orifice is used in the fuel line. The
unit is typically shipped set up for natural gas, with the
loose orifice tied near the fuel line. To convert to LP
vapor, install the orifice and disconnect the spark
advance leads as described below. See Figure 1-15 for
the fuel system component locations.
generator set.
Accidental starting can
Before working on the
TP-6516 4/09