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Manual Hubbell STH

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  • Hubbell STH - page 1

    OPERATING AND MAINTENANCE MANUAL FOR STEAM FIRED WATER HEATER ELECTRIC HEATER COMPANY BASE MODEL “ ST and STH ” ...

  • Hubbell STH - page 2

    2 HUBBELL ELECTRIC HEATER COMPANY P.O. BOX 288 STRATFORD, CT 06615 PHONE: (203) 378-2659 FAX: (203) 378-3593 INTERNET: htt p://www.hubbellhe ate rs.co m/ -- IMPORTANT -- Always reference the f ull model num ber and serial number when calling the factory. WARNING / CAUTION 1. Tank is to be complete ly filled with water and all air is to be vente d b ...

  • Hubbell STH - page 3

    3 TABLE OF C ONTENTS SECTION TITLE PAG E # I GENERAL DESCRI PTION AND CONSTRUCTI ON 9 I I INSTAL L ATION AND OPERATI ON 13 III S C H E D U LE D M A IN TE NANC E AND SERVICI NG 18 I V ADJUSTMENT OF TEMPERATURE REGULATORS 25 V TROUBLESHOOTI NG 28 VI MI SCELL ANEOUS CHARTS AND FORMULAS 30 ...

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    6 NOMENCLATURE FOR PARTS ...

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    7 NOMENCLATURE FOR ACCE SSORY PARTS ...

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    8 ...

  • Hubbell STH - page 9

    9 SECTION I - GENERAL DESCRIPTION AND CONST RUCTION 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, condensate trap, steam strainer, condensate str ...

  • Hubbell STH - page 10

    10 3. Stainless Steel – Stainless steel (ty pe 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 sy stems in the pharmaceutical, food, and electronic industries. TANK CONNECTIONS The heater is supplied wi ...

  • Hubbell STH - page 11

    11 STEAM OPERATING CONTROLS The steam operating controls are factory selected, sized, piped, and tested to ensure reliable operation. Steam controls can be shipped loose, upon request, for in the field installation by others. All steam components are factory plumbed with schedule 40 black iron pipe and ready for steam and condensate connections. A ...

  • Hubbell STH - page 12

    12 OPTIONS The following optional features may be included in your water heater. Reference the drawing specific to y our heater for further details. Single Solenoid Safet y System A single solenoid safety system closes the steam supply to the control valve should the temperature in the tank reach the high limit set point. This option requires 120-v ...

  • Hubbell STH - page 13

    13 SECTION II – INSTALLATION AND OPERATION WARNING / CAUTION DO NOT TURN ON THE STEAM SUPPL Y to this unit until hea ter 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 protection against excessive pressures and tem ...

  • Hubbell STH - page 14

    14 3. I nstall 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 I n s t a l l i n t o p r o v i d e d t a p p i n g Manual Release Lev e r T e m p e r a t u r e P r o b e 4. I nstall a relief valve overflow pipe to a nearby floor ...

  • Hubbell STH - page 15

    15 Typical Piping Diagram ELECTRICAL IN STALLATION 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 control valve, see enclosed drawings f or require ...

  • Hubbell STH - page 16

    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 wate r. L ift lever on relie f valve to relieve trapped air. Release relief val ve lever when all traces of ai r have been vented from the unit . ...

  • Hubbell STH - page 17

    17 SHUTDOWN 1. Close valve to heating medium and air supply valve, if air operated controls are furnished 2. Disconnect all el ectrical power to uni t. 3. Close hot water outlet valve. 4. Close building recirculation inlet valve, and shut down building circulation pump. 5. Close cold water inlet valve. 6. Turn off pump, if supplied. 7. Drain unit b ...

  • Hubbell STH - page 18

    18 SECTION III - SCHEDULED MAINTE NANCE 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. Le t water heate r completely heat to a desig nated thermosta t setting. b. After thermo ...

  • Hubbell STH - page 19

    19 11. Convection packages may be equipped with an integ ral 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. I f unit is supplied with anode rod, it shall be inspected for excessi ...

  • Hubbell STH - page 20

    20 occur at this point, but a s the gasket se ats, leaking will g radually stop). After leak ing has stopped, turn the nut approximately 1 revolution. At this point there may be some miner seepage, wait a few minutes to see if this seepage stops. I f seepage continues drain the tank, inspect the manhole ring, and cover for any damage, (repair or re ...

  • Hubbell STH - page 21

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    23 SINGLE SAF ETY SOLENOID SYSTEM (if inst alled) ...

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    24 DOUBLE SAF ETY SOLENOID SYSTEM (if installe d) ...

  • Hubbell STH - page 25

    25 SECTION IV – ADJUSTMENT OF TEMPERATURE RE GULATORS 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, Hubbell uses “fail safe” regulators. This means ...

  • Hubbell STH - page 26

    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 diaphrag m, spring tension should be decreased. h. Adjustment is essentially the same as if spring tension wer e increase d except the adjustment screw is turned in the opposite direction. 5. ADJUSTMENT O ...

  • Hubbell STH - page 27

    27 c. Spence Valv es : There is no main spring adjustment on Spence Valves. To set temper ature on the water heater: (1) Turn pilot spring a djustment “A” cloc kwise until all tension is off the spring. (2) Refer to unit sta rt-up section a nd start unit except for the rmostat setting . (3) Turn spring adjustment “A” counter-clockwise until ...

  • Hubbell STH - page 28

    28 SECTION V – TROUBLESHOOTING (See separate component O &M for add itional d etails.) Symptom Probable Cause Corrective Action / Remedy T u b es a r e f o u l e d . C l e a n t u b e s p er S e c t i o n III, a nnual scheduled maintenance. Excess silt in bottom of tank. Drain and flush tank per Section III , annual scheduled maintenance. Air ...

  • Hubbell STH - page 29

    29 High rate of flow bey ond design conditions. Consult factory . Excessive vibration. Under sized piping to the unit. Re-pipe lines to unit using proper sized lines. Defective steam t rap. Repair or replace per separate O&M. Undersized condensate lines. Re-pipe condensate line using proper sized lines. Water ha mmer. I nsufficient slope on con ...

  • Hubbell STH - page 30

    30 SECTION VI – MISCELL ANEOUS CHARTS AND FORMULAS TORQUE VALUE S BOLT SIZE 18-8 S/S IN. - LB S . BRASS IN. - LB S . SI L I CON BRONZE IN. - LB S . ALUMI NUM 2024-T4 IN. - LB S . 316 S/S IN. - LB S . MONEL IN. - LB S . 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 9.6 6-32 9.6 7.9 ...

  • Hubbell STH - page 31

    31 METRIC CONVERSIONS ...

Manufacturer Hubbell Category Water Heater

Documents that we receive from a manufacturer of a Hubbell STH can be divided into several groups. They are, among others:
- Hubbell technical drawings
- STH manuals
- Hubbell product data sheets
- information booklets
- or energy labels Hubbell STH
All of them are important, but the most important information from the point of view of use of the device are in the user manual Hubbell STH.

A group of documents referred to as user manuals is also divided into more specific types, such as: Installation manuals Hubbell STH, service manual, brief instructions and user manuals Hubbell STH. Depending on your needs, you should look for the document you need. In our website you can view the most popular manual of the product Hubbell STH.

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A complete manual for the device Hubbell STH, how should it look like?
A manual, also referred to as a user manual, or simply "instructions" is a technical document designed to assist in the use Hubbell STH by users. Manuals are usually written by a technical writer, but in a language understandable to all users of Hubbell STH.

A complete Hubbell manual, should contain several basic components. Some of them are less important, such as: cover / title page or copyright page. However, the remaining part should provide us with information that is important from the point of view of the user.

1. Preface and tips on how to use the manual Hubbell STH - At the beginning of each manual we should find clues about how to use the guidelines. It should include information about the location of the Contents of the Hubbell STH, FAQ or common problems, i.e. places that are most often searched by users in each manual
2. Contents - index of all tips concerning the Hubbell STH, that we can find in the current document
3. Tips how to use the basic functions of the device Hubbell STH - which should help us in our first steps of using Hubbell STH
4. Troubleshooting - systematic sequence of activities that will help us diagnose and subsequently solve the most important problems with Hubbell STH
5. FAQ - Frequently Asked Questions
6. Contact detailsInformation about where to look for contact to the manufacturer/service of Hubbell STH in a specific country, if it was not possible to solve the problem on our own.

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