6.2 Testing the ignition safety shutoff
To test the ignition system safety shutoff device:
1. With the boiler in operation, shut off the gas control valve directly outside the boiler case.
2. Ensure that the boiler has shut off and the appropriate error information is displayed on the
controller.
3.
To restart the boiler, reset the power or on the touchscreen controller, tap >Clear
Errors > Yes.
6.3 Testing the Hi-limit temperature function
The hi-limit temperature function monitors the maximum supply temperature set in the safety
ignition module (SIM). If the water temperature exceeds the hi-limit temperature, the boiler goes into
a lockout condition, requiring a manual reset.
To test the Hi-limit function:
1.
Go to > SIM Menu > Hi-Limit Test > Read the instructions.
You will need to enter a cutoff temperature below the actual supply temperature value
currently displayed. For example, if the Supply Temp. value is 180°F, enter 170°F in the Cut
Off Temp. box.
2. Tap inside the Cut-Off Temp. box, and then tap a number value > OK.
The message: "Hi-Limit Detected" is displayed.
3. To reset the boiler, select the Reset button. The cutoff value reverts to normal upon reset.
The message: "The SIM module has been reset" is displayed.
4. Tap Close.
6.4 Testing the low water cutoff (LWCO) function
The LWCO function provides continuous protection against a low water incident. If the SIM detects
low water in the boiler it enters a lockout condition. Here, you will need to reset the boiler. To test
the LWCO on the boiler, you can also manually place the boiler in a lockout condition.
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