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Hubbell STH manual

Models: STH ST

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Hubbell STH manual

Contents

STEAM FIRED WATER HEATER BASE MODEL “ ST and STH ”OPERATING AND MAINTENANCE MANUAL FOR ELECTRIC HEATER COMPANYHUBBELL ELECTRIC HEATER COMPANY P.O. BOX WARNING / CAUTIONSTRATFORD, CT PHONE 203 FAX TITLE TABLE OF CONTENTSSECTION PAGE #Page Page NOMENCLATURE FOR PARTS NOMENCLATURE FOR ACCESSORY PARTS Page SECTION I - GENERAL DESCRIPTION AND CONSTRUCTION GENERAL DESCRIPTIONCONSTRUCTION TANK Standard Tank ConstructionOUTER SHELL, INSULATION, AND SUPPORTS TANK CONNECTIONSSTEAM HEATING COIL Traps STEAM OPERATING CONTROLSSteam Control Valves Dial Temperature and Pressure Gauge Single Solenoid Safety SystemDouble Solenoid Safety System OPTIONSWATER HEATER PLACEMENT WARNING / CAUTIONSECTION II - INSTALLATION AND OPERATION PIPING INSTALLATIONHOOK-UPOF AIR AND WATER OPERATED CONTROLS Typical Piping Diagram ELECTRICAL INSTALLATIONFILLING THE HEATER STARTUPSHUTDOWN QUARTERLY INSPECTION SECTION III - SCHEDULED MAINTENANCE AND SERVICINGWARNING / CAUTION ANNUAL INSPECTIONPage a.Shut down unit as described in Section Page Page SINGLE SAFETY SOLENOID SYSTEM if installed DOUBLE SAFETY SOLENOID SYSTEM if installed SECTION IV - ADJUSTMENT OF TEMPERATURE REGULATORS 5.ADJUSTMENT OF PILOT OPERATED VALVES 5Allow unit to heat until the valve closes off See separate component O&M for additional details SECTION V - TROUBLESHOOTINGSymptom Probable CauseHigh rate of flow beyond Excessive vibrationWater hammer SECTION VI - MISCELLANEOUS CHARTS AND FORMULAS TORQUE VALUESMETRIC CONVERSIONS