Nortec Industries GS Series manual Start Up Procedure, Figure #24 Plumbing Connections

On initial start-up, the solenoid operated fill valve fills the tank. The water level reaches the backup float first and then the main float. If the backup and main floats do not read the same water level during the operation of the unit, the unit will shut down on a fault. The unit will continue to fill the unit to the top green position. The drain pump will then be energized to drain the water level down to just below the bottom red position and then the fill valve will energize again to fill the unit to the middle yellow position. During this time the software is performing a test on the fill valve and drain pump.

If a demand signal is present, the unit will then

begin the combustion sequence. As the unit operates, the fill valve with be pulsed to maintain the water level between the yellow and green positions. During steam production the unit will also check if the floats and drain pump are operational by activating a drain sequence every 24 hours. (adjustable to time of day)

START UP PROCEDURE

Figure #24

Plumbing Connections

	Fill Chamber	Vacuum Break
Presure Equalizer		Main Fill to System
		Dual Fill Valve
		Drain Outlet
		Internal Trap
		Drain Pump
		Aux. Drain
	Float Chamber

START-UP CHECKLIST

Before the GS humidifier is operated for the first time, a complete inspection must be performed to ensure that the installation and all water, gas, steam, electrical and venting connections to the humidifier conform to the guidelines in this manual. Complete the checklist on pages 25 & 26 before commissioning the unit.

Qualified personnel must correct any deficiencies with the installation before commissioning takes place.

Prior to starting the humidifier, it is necessary to ensure that no dirt or dust has accumulated in the electronics compartment or the burner area. A build up of dust on the electronics can cause overheating and early failure of the components. If necessary, clean the area around thehumidifier to prevent contaminants from being drawn into the combustion blowers.

FILLING THE SYSTEM

Before the GS unit will initiate combustion it must be filled with water and the internal controller must have completed a self-test to verify that the water fill system, level controller, and drain pump are functioning correctly.

￿Close the shut-off valve in the gas supply line

￿Remove any demand signal to the unit

￿Open the shut-off valve in the water supply line

￿Switch the humidifier on

￿The fill valve will energize and the tank will begin to fill (fill time is approximately 10 to 30 minutes depending on unit size). Once the float chamber has registered low water level, the unit will perform an internal test of the fill and drain system as described in the Water Management section

￿At the completion of the test, the float chamber will indicate middle float position (green LED) and the unit will go into standby mode until a demand signal is received

￿Proceed to the safety shut-off test

TESTING THE IGNITION SAFETY SHUT-OFF

Test the ignition system safety shut-off in the following method.

￿Close the shut-off valve in the gas supply line

￿Set the demand signal to the humidifier to 100%

￿Ensure all external controls connected to the security loop are closed

￿Switch the humidifier on

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