Manuals / Vulcan-Hart / Kitchen Appliance / Electric Steamer

Vulcan-Hart MHB24G, VHX24G5 manual Tools, Gas Supply, Standard, Special

Models: VHX24G5 VHX24G MHB24G

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VHX SERIES STEAMERS - GENERAL

Gas Supply

	INPUT		MANIFOLD		PILOT		LINE PRESSURE
			MANIFOLD		PILOT			(INCHES W.C.)
			PRESSURE		PRESSURE			(INCHES W.C.)
	(BTU/HR)		PRESSURE		PRESSURE
MODEL	(BTU/HR)		(INCHES W.C.)		(INCHES W.C.)		NATURAL		PROPANE
			(INCHES W.C.)		(INCHES W.C.)
										MAXIMUM

							MINIMUM		MINIMUM
	NAT.	PROP.	NAT.	PROP.	NAT.	PROP.	MINIMUM		MINIMUM	ALLOWED
	NAT.	PROP.	NAT.	PROP.	NAT.	PROP.	RECOMMENDED		RECOMMENDED
							RECOMMENDED		RECOMMENDED

VHX24G	200,000	200,000	3.0	3.0	3.5	3.5	7.0		11.0

	270,000	270,000	3.0	3.0	3.5	3.5	7.0		11.0
	270,000	270,000	3.0	3.0	3.5	3.5	7.0		11.0

VHX24G5	200,000	200,000	3.0	3.0	3.5	3.5	7.0		11.0	14.0

	270,000	270,000	3.0	3.0	3.5	3.5	7.0		11.0
	270,000	270,000	3.0	3.0	3.5	3.5	7.0		11.0

MHB24G	200,000	200,000	3.0	3.0	3.5	3.5	7.0		11.0

	270,000	270,000	3.0	3.0	3.5	3.5	7.0		11.0
	270,000	270,000	3.0	3.0	3.5	3.5	7.0		11.0

NOTE:	1. Output Boiler Horsepower (BHP): 4.3 BHP for 200,000 BTU; 5.5 BHP for 270,000 BTU.
NOTE:	2. Input BTU/HR difference is based on gas orifice size and air orifice size.

TOOLS

Standard

Standard set of hand tools.

Volt-Ohm-Meter (VOM) with AC current tester.

(Any quality VOM with a sensitivity of at least 20,000 ohms per volt can be used) Gas leak checking equipment.

Gas pressure manometer

Temperature meter and thermocouple.

Special

The recommended deliming chemical for the water treatment system in use, for deliming of the boiler.

Contact Vulcan Authorized Service Centers.

Heat Exchanger Gasket (joint sealant strip, Teflon) P/N 854058-1.

Page 7 of 68		F24700 (October 2001)

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Vulcan-Hart MHB24G, VHX24G5 manual Tools, Gas Supply, Standard, Special

Contents

VHX24G Shown VHX Boiler Base Series High Efficiency GAS Steamers Table of Contents VHX Series Steamers Maintenance Cleaning Introduction InstallationGeneral Boiler Control Styles Electrical Water Conditioning SpecificationsSystem Water Supply Special ToolsGas Supply Standard VHX Series Steamers Operation Steamer OperationCabinet Base Boiler Cooking Compartment Controls Boiler Blowdown Steamer Shut OFF Ignition Control Module Component FunctionVHX Series Steamers Component Function Blowdown/Drain Pressure Relief Valve Steam Header AssemblyWater Level Water Inlet Valve manual Steam Supply Manifold Compartment Pressure SwitchSteam Solenoid Valve Manifold Pressure Gauge Cabinet Base Boiler Controls Removal and Replacement of PartsVHX Series Steamers Removal and Replacement of Parts Component Locations Cabinet Base Boiler Controls Relay Board Water Level Controls Main or Auxiliary LlcoCooking Compartment Controls Pressure Switches Water Level Gauge AssemblyBoiler Assembly Boiler Fill and Cold Water Condenser Solenoid Valves Pilot GAS Valve Main GAS Valve Complete Burner Assembly Burner Head Assembly Heat Exchanger VHX Series Steamers Removal and Replacement of Parts Removal Cooking Compartment DoorsGasket Handle Latch Assembly Inspection Service Procedures and AdjustmentsClean-Out Boiler Descaler Cathodic Protector Water Level Probe Housing Blowdown Test Water Level Controls Auxiliary Low level Cut-Off Control Cycling High Limit Small increments Fill and Cold Water Solenoid Valves Boiler BLOWDOWN/DRAIN Solenoid Valve Inline Water Strainer Cleaning Main Burner Ignition Checks Pressure Switch Adjustment GAS Manifold Pressure Adjustment VHX Series Steamer Service Procedures and Adjustments AIR Pressure Switch Adjustment GAS Pilot Pressure Adjustment Pressure Readings Inches W.C GAS Manifold Pressure Adjustment Terminals Ignition Control Module Checks Spark Verification Test Cooking Compartment Doors Intake Shut-Off Valve Adjustment Steam FlowDoor Sealing Adjustment Cooking Compartment VHX Series Steamer Electrical Operation Door Latch Adjustment Low Level Cut-Off & Differential Control Electrical Operation Auxiliary Low Level Cut-Off LED Legend Board Layout and LED Legend Aux Water Level Satisfied State B Boiler Operational Status LED IndicatorReset Engaged State C Initial Conditions State a Burner ON, Boiler Heating to generate steam State E Air Pressure Switch Satisfied State DK32 Close K51 Close HL-LED Sequence of OperationNEW Style Controls Boiler Initial Fill and Preheat N14, N16, N17 go out N9, N10, N11, N12, N13 go out Boiler Blowdown/drain Water Refill After Initial Fill VHX Series Steamer Electrical Operation Cooking Compartment Controls This page Intentionally Left Blank Models Built After 5/25/00 New Style Boiler Controls Schematics VHX Series Steamer Electrical Operation Models Built Before 5/25/00 Old Style Boiler Controls Cooking Compartment Controls Wiring Diagrams VHX Series Steamer Electrical Operation Models Built Before 5/25/00 Old Style Boiler Controls VHX Series Steamer Electrical Operation Cooking Compartment Controls VHX Series Steamer Troubleshooting TroubleshootingBoiler Base Controls Symptom Possible Causes Adjustments Boiler blowdown solenoid valve clogged and not fully closing Boiler Base Procedures and Adjustments VHX Series Steamer VHX Series Steamer Condensed Spare Parts List Condensed Spare Parts ListNEW Style Controls only VHX24G, VHX24G5, MHB24G