Thermo Pride CDB1-125 User's Information Manual page 18

All installations and services must be performed by qualified service personnel.
9. Make sure the burner flames are in good adjustment (See Figure 6). Burner flames should not
impinge or fire against the side of the tube opening.
NOTICE: It is not unusual to have orangish flames visible in the tube for LP gas.
Figure 6.
: Call a qualified heating contractor to report suspected deficiencies (do not attempt to
make repairs yourself!)
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