Crown GCX-16 Installation & Operation Manual page 16

Gas cabinet base convection steamer
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INSTALLATION AND OPERATION MANUAL,
GAS CABINET BASE CONVECTION STEAMER, GCX-16, GCX-24
5.0 OPERATION INSTRUCTION FOR BOILERS WITH CSD-1 CONTROLS (Continued)
Normal Boiler Operating Cycle
Water Fill Cycle
On the initial filling of the boiler, the reset switch must be activated to initialize the safety lockout
circuit. Once the water in the boiler has reached the proper level, the level control will open the
circuit to the fill solenoid valve, stopping the flow of water to the boiler. As the water is
consumed in the production of steam, the level control will close the circuit to the fill solenoid
and water will be supplied to the boiler.
Firing Cycle
The gas valve is operated by pressure sensing devices. On the initial operation of the boiler,
steam generation should reach 11 psi in approximately 15 minutes. At this point the "Operating
Pressure" switch will open, closing the gas valve. When pressure drops to 9 psi, the pressure
switch closes, the gas valve will open and ignition should occur.
Should the pressure rise more than 14.5 psi the "Override Pressure Switch" will close the circuit
to the override solenoid valve, releasing excess steam.
Condensing Drain
A thermostat is located in the drain assembly and is activated by the temperature of steam.
The thermostat opens the cooling solenoid valve, in turn supplying water to the drain to
condense steam.
Automatic Blowdown Valve
If the unit has an automatic blowdown valve, it is activated by the main power switch. The
boiler will be drained should the main power switch be turned "OFF".
MANUAL 10064R2
16
2020-07-13

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Gcx-24

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