AERCO International Boiler Benchmark 2000

Set the unit’s ON/OFF switch to the OFF position

Place the unit in Manual Mode and set the valve position between 25% and 30%

Remove the Air/Fuel Valve cover by rotating the cover counterclockwise to unlock and lift up to remove

Remove one of the two wires (#169 or #170) from the Ignition Switch

The unit should begin its start sequence and then shut down and display IGN SWITCH OPEN DURING IGNITION

Replace the wire on the Ignition Switch and press the CLEAR button. The unit should restart

Sign off on the ignition switch check

Warning: The igniter-injector may be hot, therefore, care should be exercised to avoid burns.

Is the unit cooled to room temperature?

Is the ON/OFF switch on the control panel in the OFF position?

Is AC power disconnected from the unit?

Is the top shroud removed from the unit?

Is the cable disconnected from the igniter-injector?

Is the gas injector tube of the igniter-injector disconnected from the elbow of the staged ignition assembly?

Is the igniter-injector removed from the burner plate?

Is there evidence of erosion or carbon build-up on the igniter-injector?

Warning: This procedure should be performed by trained personnel only.

Set the ON/OFF switch to the OFF position.

Place the unit in the Manual Mode and set the valve position between 25% and 30%.

Close the manual gas shutoff valve located between the Safety Shut-Off Valve (SSOV) and the Air/Fuel Valve.

Set the ON/OFF switch to the ON position to start the unit.

The unit should purge and light the Pilot Flame, then it should shut down after reaching the main burner ignition cycle and display FLAME LOSS DURING IGN.

Open the valve previously closed in step 3 and press the CLEAR button.

Restart the unit and allow it to prove flame.

Once flame is proven, close the manual gas valve located between the SSOV and the Air/Fuel Valve.

WARNING: Periodic testing of all boiler controls and safety devices is required to determine that they are operating as designed. Precautions shall be taken while tests are being performed to protect against bodily injury and property damage. The owner or user of an automatic boiler system should set up a formal system of periodic preventive maintenance and testing. Tests should be conducted on a regular basis and the results recorded in a log-book.

Flue, vent, stack or intake air duct: Visually inspection condition and check for obstructions

1. Disable the blower output drive voltage as follows:

(a) Press the MENU key until CONFIGURATION MENU is displayed.

(b) Press the ▲ arrow key until the ANALOG OUTPUT function is displayed, then press the CHANGE key.

(c) Press the ▼ arrow key until OFF is displayed, then press the ENTER key.

2. Start the unit in the Manual Mode at a valve position between 25% and 30%.

3. The unit should shut down and lockout, showing AIRFLOW FAULT DURING PURGE in the display.

Set the ON/OFF switch to the OFF position

Close the water shut-off valves in the supply and return piping to the unit

Slowly open the drain valve on the rear of the unit

Continue draining the unit until a LOW WATER LEVEL fault message is displayed and the FAULT indicator flashes

Place the unit in the Manual Mode and raise the valve position above 30%

Set the ON/OFF switch to the ON position. The READY light should remain off and the unit should not start

Close the drain and pressure relief valve used in draining the unit

Open the water shut-off valve in the return piping to the unit

Open the water supply shut-off valve to the unit to refill