Related Manuals for Hubbell Electric Heater Company SLN
Summary of Contents for Hubbell Electric Heater Company SLN
- Page 1 OPERATING AND MAINTENANCE MANUAL FOR COMMERCIAL SOLAR WATER HEATER ELECTRIC HEATER COMPANY BASE MODEL “SLN”...
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Page 2: Warning / Caution
A qualified installer is a person who has licensed training and a working knowledge of the applicable codes regulation, tools, equipment, and methods necessary for safe installation of an electric resistance water heater. If questions regarding installation arise, check your local plumbing and electrical inspectors for proper procedures and codes. -
Page 3: Table Of Contents
SECTION TITLE GENERAL DESCRIPTION AND CONSTRUCTION INSTALLATION SCHEDULED MAINTENANCE AND OPERATION TROUBLESHOOTING SERVICING AND REPLACEMENT OF PARTS TABLE OF CONTENTS PAGE #... -
Page 5: Tank Connections
GENERAL DESCRIPTION AND CONSTRUCTION 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 temperature and pressure safety relief valve. The water heater heats domestic potable water by transferring heat from the solar loop (typically ethylene glycol) to the domestic water via an immersion heating coil inserted into the water heater tank. - Page 6 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 water heater tank. Temperature sensors and controls are not included with the water heater.
- Page 7 Temperature High Limit Switch As a safety device, either a surface mounted high 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 disengage the power from the back-up electric heating system.
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Page 8: Installation
1. Place the heater on a solid foundation in a clean, dry location nearest to the point of most frequent hot water use. 2. The water heater should be protected from freezing and waterlines insulated to reduce energy and water waste. -
Page 9: Piping Installation
PIPING INSTALLATION NOTE: The most effective means for preventing deterioration from accelerated corrosion due to galvanic and stray current 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 design conditions. Piping to the unit should be sized to meet the design conditions, as dictated by good engineering practices. -
Page 10: Electrical Installation
2. If supplied with a back-up electric heating element; enter electric junction box with properly sized feeder leads. Be sure to properly ground the water heater. 3. All other electrical connections are made at the factory; therefore, no other electrical connections are necessary. -
Page 11: Quarterly Inspection
MAINTENANCE AND OPERATION The water heater is automatic in its operation. It will maintain a full tank of water at the temperature setting of the thermostat. The water heater should not be turned on without first making sure that the tank is full of water and that all air has been released. -
Page 12: Annual Inspection
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. -
Page 13: Troubleshooting
SECTION IV – Symptom Gradual loss of heating capacity. Overheating. Immediate loss of heating capacity. Excessive vibration. Water hammer. * Red symptom indicates that equipment should be shut down immediately and cause of malfunction corrected before unit is re-started or serious damage may result. TROUBLESHOOTING SOLAR WATER SYSTEM Probable Cause... - Page 14 BACK-UP ELECTRCIAL HEATER SYSTEM (if supplied) Symptom No hot water Circuit breaker tripped at source. Reset circuit breaker. High limit switch tripped. Loose wires. Heating element inoperable. Low line voltage. Faulty thermostat. Water temperature Faulty thermostat. below settings at all times Heating element not working on all phases...
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Page 15: Relief Valve
SECTION V - Before servicing or replacing any part make sure to turn the power supply switch to the OFF 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. - Page 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 system or break union on outgoing water line.
- Page 17 HEATING ELEMENT (if supplied) 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 system or break union on outgoing water line. 5.
- Page 18 Single Element Operation 3 Ø Open Delta Wiring for Simultaneous Operation...
- Page 19 Interlocked for Non-Simultaneous Operation Non-Interlocked for Simultaneous Operation...
- Page 20 SURFACE MOUNTED THERMOSTAT (if supplied) 1. Disconnect power from unit. 2. Remove access cover and locate thermostat. 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 from high limit cut-off, if required. Mounting Screws 5.
- Page 21 IMMERSION THERMOSTAT (if supplied) 1. Disconnect power from unit. 2. Remove access cover and locate thermostat. 3. Remove high limit cover screw and cover. 4. Disconnect the two (2) or three (3) 14 gauge wires, as required. 5. Remove capillary tube and bulb from thermowell.
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