Manual 2100-392
Page 12
8. Measure the CO
2
(or O
2
) in the flue gas at the trace
of smoke level. Open the air control and add
reserve air until the CO
2
is lowered by 1.5%.
Example: Original CO
2
at trace of smoke level was
13.0% (3.30% O
2
)
. Lower to 11.5% CO
2
(5.3% 0
2
).
See Table 7.
9. Perform the smoke test again. It should now be at
zero. Lock the air settings securely.
10. Measure the stack temperature. Subtract the room
temperature to obtain the net reading and use the
Efficiency Chart, Table 8, to determine the steady-
state efficiency.
FIGURE 6
PRESSURE GAUGE CONNECTION TO PRESSURE GAUGE PORT
(See Note Below)
NOTE: When pressure gauge is installed there will be some afterburn and
smoke created by the bleed down of oil pressure from the pressure
gauge. When no pressure gauge is installed, and the plug is in place
on the test tee, there should be a positive clean shut off when the
burner stops.
MIS-1660
Summary of Contents for FC085D36D
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