Bosch 2400E NG Installation Manual download pdf (Page 5)

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Measuring and adjusting CO2 levels

D. Returning to Service:

1. Return slotted cover to original position.

2. Reinstall Torx cover.

3. Remove CO

analyzer probe and reinstall flathead

screw with gasket 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

Reading: % CO

P1 CO

Reading: % CO

Fig. 7

Fig. 8

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

levels increase when the cover is installed.

Table 1

1 2 3 4 5 6 7 8 9 10 11 12

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Bosch 2400E NG Installation Manual Page 5