Gasmac RW-60-20 Installation And Operating Instructions Manual

Contents

Gasmac RW-60-20 Installation And Operating Instructions Manual Manual pdf 24 page image

24OPERATING SEQUENCEThe Easy Radiant gas burner is a very simple device. The normal sequence of events duringignition and operation of the burner is as follows:1. The heater is energized by means of a thermostat or switch.2. When 24 volts is applied to the module, the module will energize the blower and closethe airswitch.3. The current flows and energizes the igniter and reaches ignition temperature. No gasflows until the valve is energized and opened.4. Air pressure generated by the blower will cause the normally open combustion pressureswitch to close. The combustion pressure switch is set to allow the normal rate ofcombustion air to flow into the combustion chamber. Any restriction or blockage willcause the pressure switch to open and shut down the entire system.5. The current passes through the blocked flue pressure switch, which is normally closed.Any blockage or restriction will cause the pressure switch to open and shut down theentire system.6. After 17 seconds, the valve is energized and opened. Gas flows through the burner and isignited.7. The power is removed from the igniter. The flame sensor is utilized. As long as a flameis present, the valve is held open. If the flame is lost, the control acts to close the valvewithin one second and a new trial sequence to start up is initiated.8. If ignition is not achieved, or flame is not sensed, then the control closes, the gas valve,and attempts ignition a second time, and if necessary a third time. If ignition is notachieved after the third try, the control goes into lockout for 30 minutes and power mustbe interrupted before trying again. At this point it is suggested that an authorized serviceperson be contacted to inspect and test the controls.9. The heater should continue to function until power is interrupted either by the thermostatbeing satisfied or manually disconnected.NATURAL GAS AND LIQUID PROPANE CONVERSION:1. Turn off gas supply at the appliance service valve.2. Remove regulator cap screw and pressure regulator adjusting screw3. Replace the existing spring with replacement spring.4. Re-install regulator cap screw and pressure regulator adjusting screw.5. Replace gas orifice with the one provided by the manufacturer.6. Check the regulator setting using a manometer.7. Mount the conversion label on the gas control.8. Mount the new rating label on the heaters.

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