6 720 607 057
Special adjustment for measuring and adjusting CO2 levels
33
D. Returning to Service:
1. Return slotted cover to original position.
2. Reinstall Torx cover.
3. Remove CO
2
analyzer probe and reinstall flathead
screw in exhaust collar.
4. Turn ON/OFF switch to the OFF (O) position and
then back to the ON (I) position.
5. Heater is ready for normal operation.
Final Readings
P2 CO
2
Reading: % CO
2
P1 CO
2
Reading: % CO
2
Fig. 44
Fig. 45
Without Front
Cover
With Front
Cover
Nat. Gas Nat. Gas
max. input P1 9.1 ± 0.1 % 9.7 ± 0.1 %
min. input P2 9.4 ± 0.1 % 9.7 ± 0.1 %
LP Gas LP Gas
max. input P1 10.1 ± 0.1 % 10.7 ± 0.1 %
min. input P2 10.4 ± 0.1 % 10.7 ± 0.1 %
* Final reading must be confirmed with the front cover
on, CO
2
levels increase when the cover is installed.
Table 9
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