IBC CX Series

Fuel High fire Low fire
CO max
PPM
Range % Target %
Range % Target %
Natural Gas
9.0 - 10.0 9.5
8.2 - 9.2 8.7
<150
Propane
10.3 - 11.3 10.8
9.3 -10.3 9.8
< 250
Table 10 Combustion test target ranges - CO
2
/ Maximum CO
6.3.4 Testing the LWCO function
The low water cutoff (LWCO) function provides continuous protection against low water in the
boiler. If the SIM detects low water, the boiler enters a lockout state. Perform the test to ensure
that the LWCO sensor is functioning.
1.
Go to Status > SIM Menu > LWCO Test > Read the instructions.
2. After the test, on the touchscreen controller, select the Reset button.
The message: "The SIM Module has been reset" is displayed.
3. Tap Close > Back to exit the test.
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Section: Boiler operation