Hubbell ST - Manuals

9 SECTION I - GENERAL DESCRIPTION AND CONSTRUCTION GENERAL DESCRIPTION This book describes a packaged steam powered water heater that is a stationary, self-contained unit. The complete assembly on a standard unit consists of the storage tank, immersion heating coil, steam regulator, steam drip trap,...

10 3. Stainless Steel – Stainless steel (type 304, 316, or 316L) is well suited for high purity applications requiring a corrosion resistant tank with minimal leaching of impurities into the water. Well suited for process, RO, and DI water systems in the pharmaceutical, food, and electronic industri...

13 SECTION II – INSTALLATION AND OPERATION WARNING / CAUTION DO NOT TURN ON THE STEAM SUPPLY to this unit until heater is completely filled with water and all air has been released. If the heater is NOT filled with water when the steam supply is turned on, damage to the heating coil may result. For ...

14 3. Install the combination temperature and pressure safety relief valve in the tapping provided. Note that this is required by law for safety considerations. Outlet to floor drain Install into provided tapping Manual Release Lever Temperature Probe 4. Install a relief valve overflow pipe to a nea...

15 Typical Piping Diagram ELECTRICAL INSTALLATION 1. If the unit is furnished with a pilot or self contained control valve, no external source of power is required for the valve. (See enclosed operation and maintenance manual for specific valves). 2. If the unit is furnished with an air or electric ...

16 FILLING THE HEATER 1. Begin with all steam, condensate, and water valves closed. 2. Open the isolation valves on the integral circulator line ,if supplied. 3. Open cold water valve, fill unit with cold water. Lift lever on relief valve to relieve trapped air. Release relief valve lever when all t...

17 SHUTDOWN 1. Close valve to heating medium and air supply valve, if air operated controls are furnished 2. Disconnect all electrical power to unit. 3. Close hot water outlet valve. 4. Close building recirculation inlet valve, and shut down building circulation pump. 5. Close cold water inlet valve...

18 SECTION III - SCHEDULED MAINTENANCE AND SERVICING WARNING / CAUTION Before performing any maintenance procedure, make certain steam supply and electrical power supply is OFF and cannot accidentally be turned on. QUARTERLY INSPECTION 1. Monitor thermostat a. Let water heater completely heat to a d...

19 11. Convection packages may be equipped with an integral circulator. This circulator should be serviced per the enclosed pump O&M manual. 12. The unit as well as all strainers should be blown down regularly to remove any trash, and sediment that may have accumulated. 13. If unit is supplied w...

25 SECTION IV – ADJUSTMENT OF TEMPERATURE REGULATORS 1. The spring tension on temperature regulators is adjusted at the factory to meet design conditions. However, design conditions may vary from actual operating conditions and re-adjustment might be required on this job. 2. Whenever possible, Hubbe...

26 f. Apply air pressure to valve diaphragm so that stem halves are aligned and re-connect stem halves. g. If valve will not open with air on the diaphragm, spring tension should be decreased. h. Adjustment is essentially the same as if spring tension were increased except the adjustment screw is tu...

28 SECTION V – TROUBLESHOOTING (See separate component O&M for additional details.) Symptom Probable Cause Corrective Action / Remedy Tubes are fouled. Clean tubes per Section III, annual scheduled maintenance. Excess silt in bottom of tank. Drain and flush tank per Section III , annual schedule...

30 SECTION VI – MISCELLANEOUS CHARTS AND FORMULAS TORQUE VALUES BOLT SIZE 18-8 S/S IN.-LBS. BRASS IN.-LBS. SILICON BRONZE IN.-LBS. ALUMINUM 2024-T4 IN.-LBS. 316 S/S IN.-LBS. MONEL IN.-LBS. 4-40 5.2 4.3 4.8 2.9 5.5 5.3 4-48 6.6 5.4 6.1 3.6 6.9 6.7 5-40 7.7 6.3 7.1 4.2 8.1 7.8 5-44 9.4 7.7 8.7 5.1 9.8...