28142 Rev 15 ADJUSTMENT
Gentherm Global Power Technologies Page 41
GPT recommends the use of a combustion analyzer to tune the 5220 TEG. Tuning this way
will result in a TEG that will run properly, cleanly, and reliably. See section 8.1.2.2 pf this
manual for tuning instructions using a combustion analyzer.
Fuel Pressure Adjustment
Confirm the fuel gauge pressure is near to the pressure indicated on the Data Plate located
on the inside of the cabinet doors. This pressure is determined during the generator’s final
test at the factory.
Keep in mind that if the TEG is located at a different altitude than the factory - 792 m (2,600
ft) - the fuel pressure may need to be compensated to achieve the correct power output. Use
Figure 22 to determine how much to compensate the fuel pressure setting.
Example: If the site elevation is 1,000m (3,281ft), consulting the altitude graph shows
that 2.5 kPa (0.36 PSI) should be added to the pressure on the Data Plate.
NOTE:
Typical fuel pressure settings are 130-144 kPa (18.5 - 21 PSI) for natural gas
and 125 - 140 kPa (18.0 - 20.0 PSI) for propane. Refer to the TEG data plate
for the starting fuel pressure.
While altitude will influence pressure readings, V
set
is the most important factor to consider
when tuning a TEG. The TEG should be started at the factory-set pressure (stamped on the
Data Plate) and adjusted once V
set
has stabilized.
Figure 23 – Air Shutter Diagram
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