Install And Connect Fuel Supply - Kohler 48RCLC Installation Manual

3.3 Install and Connect Fuel Supply

Note:
Read all safety precautions at the beginning of this publication before performing any work on the generator set.
Note:
Have the fuel piping and primary regulator installed by the fuel supplier. The fuel supply installation must comply with NEC and
local codes.
1. See the generator set spec sheet for the fuel supply requirements. Add up the fuel requirements for the generator set
plus all other gas-fired equipment fueled by the same supply.
2. Check that the primary regulator and gas meter have sufficient capacity for the fuel requirements for the generator set
plus all other gas-fired equipment. Have the fuel supplier install a larger gas meter, if necessary.
3. Determine the fuel pipe size as described in the previous section.
4. Have your fuel supplier install a manual fuel shutoff valve and rigid gas piping. Bring the pipe to within 254 mm (10 in.)
of the generator set fuel inlet location.
5. Remove the enclosure door on the service side of the unit.
6. Connect the fuel supply:
a. Apply pipe sealant that is approved for fuel connections to the threaded fuel connections.
b. Use a section of flexible fuel line to connect the fuel supply to the 1 in. NPT fuel inlet connection on the generator
set. See Figure 21 or the dimension drawing for the fuel inlet connection location. Do not bend the flexible fuel line
to make up for misalignment of the fuel supply line and the generator set fuel inlet.
c. Open the manual fuel valves and leak test all fuel connections using soapy water. If a leak is detected, close the
fuel valves, disconnect the lines at the location of the leak, clean the fittings, and apply fresh pipe sealant.
Reconnect the lines and recheck for leaks.
7. Verify that the fuel system is set up for the fuel being used (natural gas or LPG). See the Fuel Conversion Procedures
section.
8. Connect a manometer to the fuel valve and verify sufficient fuel supply pressure with the engine running.
Note:
After the system installation is complete, check for fuel leaks with the generator set running.
Fuel inlet connection
Figure 21 Fuel Supply Connection Location (generator set enclosure not shown)
TP-7203 4/23
Optional fuel inlet location on
this side of the skid
Fuel solenoid valves (qty.2)
GM116217
37