Unit Startup
168 RT-SVX24J-EN
Note: The burner capacity is controlled by the movement
of the air damper.This has been preset at the
factory and normally does not need field
adjustment.The combustion quality (air/gas) is
controlled by the setup of the air damper and
butterfly valve linkage relationship.
7. Use Table 37, p. 110 to program the minimum (5%)
firing rate. Allow the system to operate for
approximately 10 minutes.
8.
Use a carbon dioxide analyzer and measure the
percentage of carbon dioxide
in the flue gas. If the
measured carbon dioxide level is in the ranges shown
in the Guide Values Table 48, p. 166, no adjustment is
necessary.
Note: It
is normal for the low fire CO
2
to be lower than the
high fire.
9. If the measured carbon dioxide level is below the
recommended values for low heat,
return the burner to
90% fire rate and repeat step 6, to achieve optimum
combustion.
10. Program the burner for 100% operation and recheck
the CO
2
or O
2
value.
11. Check the flue gas values at several intermediate
output levels. If corrections
are necessary;
– Adjust butterfly linkage
12. Press the STOP key at the Human Interface Module in
the unit control panel to
stop the system operation.
Figure 119. Modulating gas regulator
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