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Hubbell Electric Heater Company SLN manual

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Table of contents for the manual

  • Page 1

    OPERATING AND MAINTENANCE MANUAL FOR COMMERCIAL SOLAR WATER HEATER ELECTRIC HEATER COMPANY BASE MODEL “SLN”[...]

  • Page 2

    2 HUBBELL ELECTRIC HEATER COMPANY P.O. BOX 288 STRATFORD, CT 06615 PHONE: (203) 378-2659 FAX: (203) 378-3593 INTERNET: http://www.hubbellheaters.com/ -- 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 fille d with water and a ll air is to be vente d bef[...]

  • Page 3

    3 TABLE OF C ONTENTS SECTION TITLE PAG E # I GENERAL DESCRI P TION AND CONSTRUCTI ON 5 I I INSTAL LATI ON 8 III S C H E D U LE D M A IN TE NANC E AND OPERATION 11 I V TROUBL ES HOOTING 13 V SERVICI NG AND REPLACEMENT OF PARTS 15[...]

  • Page 4

    4[...]

  • Page 5

    5 SECTION I - GENERAL DESCRIPTION AND CONST RUCTION GENERAL DESCRIPTION This book describes a packaged solar water heater that is a stationary , self-contained unit. The complete assembly on a standard unit consists of the storage tank, immersion heating coil, and an ASME rated combination temperat ure and pressure safety relief valve. The water he[...]

  • Page 6

    6 OUTER SHELL AND INSULATION The tank is encapsulated in 2-inch thick polyurethane foam insulation. The insulation is protected by a high impact non-corroding colorized composite protective jacket. THERMISTOR CLIP The water heater is supplied with a thermistor clip located just above the heating coil tank flange for attaching a sensing probe to the[...]

  • Page 7

    7 Temperature Hig h Limit S witch As a safety device, either a surface mounted hig h temperature cut-off switch with manual reset, factory set at 190° F, or an immersion high temperature cut-off switch with manual reset, factory set at 180° F, may be provided. In the event of an over-temperature condition, the thermostat will diseng age the power[...]

  • Page 8

    8 SECTION II – INSTALLATION WARNING / CAUTION DO NOT TURN ON THE SOL AR WATER SUPPL Y to this equipment until heate r is completely filled with water and all air has be en rele ased. If the heate r is NOT filled with water when the power is turned on, damage to the heating coil may result. For protection against excessive pressures and temperatur[...]

  • Page 9

    9 PIP ING INSTALLATION NOTE: The most effect ive means for preventing deteriorat ion from accelerated corrosi on due to galva nic and stray curre nt is the installation of dielectric fittings/unions. The installation of these fittings is the responsibility of the installing contractor. 1. All integral components have been properly sized to meet des[...]

  • Page 10

    10 Outlet to floor drain Install into provided tapping Manual Release Lev e r Temperature Probe Temperature and Pressure Relief Valve 5. I nstall a relief valve overflow pipe to a nearby floor drain. CAUTION: No valve of any type should be installed between the relief valve and tank or in the drain line. ELECTRICAL IN STALLATION 1. Connect thermist[...]

  • Page 11

    11 SECTION III - SCHEDULED MAINTE NANCE AND OPERATION WARNING / CAUTION Before performing any maintenance procedure, make certain solar water and electric supply is OFF and cannot accidentally be turned on. MAINTENANCE AND OPERATION The water heater is automatic in its operation. I t will maintain a full tank of water at the temperature setting of [...]

  • Page 12

    12 ANNUAL INSPECTION 1. Flush tank as follows a. Shut off power supply . b. Close valve on hot water outlet piping. c. Open valve on drain piping. d. Cold water inlet line pressure will be strong enough to flush sediment from the bottom of the tank out through the drain. L et water run for 3-4 minutes. e. Close drain valve. f. Open hot water valve.[...]

  • Page 13

    13 SECTION IV – TROUBLESHOOTING SOLAR WATER SY STEM 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. Gradual loss of heating capacity. Excess silt in bottom of tank. Drain and flush tank per Section III , annual scheduled maintenance. Ruptured[...]

  • Page 14

    14 BACK -UP ELECTRCIAL HEATER SYSTEM (if supplied) Symptom Probable Cause Corrective Action / Remedy Circuit breaker tripped at source. Reset circuit breaker. High limit switch tr ipped. Reset hig h limit switch. Loose wires. Tighten wires. Torque screws per torque chart included in Section VI . Heating element inoperable. Ch eck he ati ng e le men[...]

  • Page 15

    15 SECTION V - SERVICING & REPLACEMENT OF PARTS WARNING / CAUTION Before servicing or replacing any part make sure to turn the power supply switch to the OF F position. RELIEF VALVE 1. Disconnect power from unit. 2. Shut off incoming cold and solar water supply . 3. Lift test lever on relief valve to relieve pressure in tank. 4. Disconnect over[...]

  • Page 16

    16 HEATING COIL 1. Disconnect power from unit. 2. Shut off incoming cold and solar water supply . 3. Attach hose to drain connection. 4. Lift manual release lever on relief valve to let air into sy stem or break union on outgoing water line. 5. Drain water from tank. 6. Remove access cover. (See diagram on page 9). 7. Disconnect supply and return l[...]

  • Page 17

    17 HEATING ELEMENT (if supplie d) 1. Disconnect power from unit. 2. Shut off incoming water supply . 3. Attach hose to drain connection. 4. Lift manual release lever on relief valve to let air into sy stem or break union on outgoing water line. 5. Drain water from tank. 6. Disconnect the wires from the heating elem ent terminal s. Tank Flange Wires[...]

  • Page 18

    18 2 L 1 L 2 L 3 L 1 L 2 Single Element Operation 3 Ø O p e n D e l t a W i r i n g f o r S i m u l t a n e o u s O p e r a t i o n 4 3 2 1 1 2 1 2 3 4 1 1 3 4 2 1 2[...]

  • Page 19

    19 L 1 L 2 L 1 L 2 I nterlocked for Non-Simultaneous Operation Non-I nterlocked for Simultaneous Operation 1 1 1 1 2 2 2 2 3 3 4 4 4 4 1 1 2 2[...]

  • Page 20

    20 SURFACE MOUNTED THERMOS TAT (if sup plied) 1. Disconnect power from unit. 2. Remove access cover and locate t hermostat. 3. Disconnect the two (2) or three (3) 14 gauge wires and jumpers, as required. Control Wires 4. Remove two (2) mounting screws and disconnect fr om high limit cut- off, if re quired. Mounting Screws 5. Replace thermost at usi[...]

  • Page 21

    21 IMMERSION THERMOSTAT ( if supplied) 1. Disconnect power from unit. 2. Remove access cover and locate t hermostat. 3. Remove high limit c over screw and cover. Cover Cover Screw 4. Disconnect the two (2) or three (3) 14 gauge wires, as required. Wires Capillary Tube 5. Remove capilla ry tube a nd bulb from thermowell. 6. Remove two (2) mounting s[...]

  • Page 22

    22 Model SLN – Coil Curves[...]