AAA Series Gas Boiler – Installation and Service Manual
19
7) Turn Gas Valve to ON. When power is supplied to the controller, the LCD displays “- - -“. When
the thermostat calls for heat, the “- - -“ screen is replaced with the boiler target temperature. Next,
pilot burner should ignite followed by main burners and as BTC series energizes stages indicated
by the stage indicator,
. Once the boiler water temperature reaches the setpoint, the
controller will regulate the boiler water temperature using the two stages. The number of stages
that switch on is based on the heating demand and user settings. Check main and pilot burners
and adjust pilot, if necessary, as described in
Section 4.3
. After all room thermostats are
satisfied, the controller de-energizes the two stages, in sequence.
8) Assure that all other gas appliances are turned off, including their pilot flames.
9) Check manifold pressure reading on the manometer and make necessary adjustments. Check
burner input to match rating plate input.
10) Return thermostat and controls to normal operation settings.
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