Combustion Air - Heartland Classic HL-CKNG Owner's Manual

Burner

COMBUSTION AIR

IMPORTANT: ENSURE THAT THE LOUVERED BASE
PLATE IS IN POSITION DURING COMBUSTION
TESTING AND SETTING PROCEDURES. ENSURE
THE OUTER DOOR IS CLOSED.
TURN THE BURNER ON
After 15 minutes, lift up the R.H. insulating cover and
remove the countersunk screw and insert the sensing end
of a portable indicator to check the CO
level.
CO
CO
2
If these values cannot be obtained, check gas rate, adjust
throttle screw if required and allow readings to stabilize
(See Fig. 21).
THROTTLE
ADJUSTMENT SCREW
FIG. 21
(Carbon Dioxide)
2
0 - 50 ppm
8.2% - 9.9%
39
DESN 512341