Gentherm 5220 - Figure 24 - Change in V Set Vs Air-Shutter Adjustment, Typical

28142 Rev 15 ADJUSTMENT
Gentherm Global Power Technologies Page 44
If V
set
is less than the original value (±0.2V), return the air shutter to the original
position and then close slightly. Let the unit stabilize for 15-20 minutes and then measure
V
set
. Repeat until V
set
decreases, then return to the position that gave the highest V
set
, and
tighten screws A and B and measure CO.
NOTE:
The TEG will require some time to stabilize after either air or fuel adjustments
are made. Wait 15-
20 minutes between readings while adjusting the air
shutter.
Tighten screws A and B, replace air screen, and verify V
set
before closing the cabinet.
Figure 24 – Change in V
set
vs Air-Shutter Adjustment, Typical
Air Shutter Adjustment Using a Combustion Analyzer
GPT recommends the sue of a combustion analyzer to tune the 5220 TEG. The air shutter
can be set more quickly and accurately using a combustion analyzer. A volt meter as
described in the previous section is still necessary to verify power output. The combustion
analyzer should be able to measure O
2
and CO.
WARNING!
The TEG exhaust can reach temperatures of over
800°C. Do not touch any of the exhaust components
or bring exposed skin near hot exhaust gases. Do not
leave the combustion analyzer probe in
the TEG
exhaust – it may be damaged by extreme heat.