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<narrative>
	<info>
		<name>Typical Boiler Feed Unit</name>
		<modified>01/17/2007</modified>
	</info>
	<frame id="1">
		<textdata>
			<h3>Introduction</h3>
			<p><b>At anytime press the <i>Back</i> button on your web browser to return to the main menu.</b></p>
			<p>Press <font color="#669900"><b><i>Next</i></b></font> to play the next scene and <font color="#CC0000"><b><i>Previous</i></b></font> to repeat the previous scene. Press the <font color="#336699"><b><i>Callout</i></b></font> button on the simulation to toggle on/off the labels.</p>
			<p><i>There is no further introductory information for this simulation.</i></p>
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	</frame>
	<frame id="2">
		<textdata>
			<h3>Condensate returns</h3>
			<p>Condensate returns flowing into the receiver. The <b>pump</b> is controlled by the boiler and is sending water to boiler. <b>Solenoid valve</b> is closed; pipe into solenoid is always filled with city water.</p>
		</textdata>
	</frame>
	<frame id="3">
		<textdata>
			<h3>Water level falls</h3>
			<p>The water level in receiver tank begins to fall as it is pumped to the boiler.</p>
		</textdata>
	</frame>
	<frame id="4">
		<textdata>
			<h3>Solenoid opens</h3>
			<p>At the LOW water level setting, the <b>float switch</b> sends signal to open the <b>solenoid valve</b> letting city water flow into receiver tank.</p>
		</textdata>
	</frame>
	<frame id="5">
		<textdata>
			<h3>Water level rises</h3>
			<p>As city water flows into receiver tank, the water level begins to rise.</p>
		</textdata>
	</frame>
	<frame id="6">
		<textdata>
			<h3>Solenoid closes</h3>
			<p>At the HIGH water level setting, the <b>float switch</b> sends signal to close the <b>solenoid valve</b>, stopping city water flow into receiver tank.</p>
		</textdata>
	</frame>
</narrative>