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INSTALLATION & MAINTENANCE MANUAL
PVI DURAWATT
Installation and service must be performed by a qualified service installer, service agency or utility supplier.
IMPORTANT: THIS MANUAL CONTAINS INFORMATION REQUIRED FOR INSTALLATION, OPERATION AND
MAINTENANCE OF THIS EQUIPMENT. READ AND FOLLOW THE INFORMATION IN THIS MANUAL AND ALL
OTHER PROVIDED INSTRUCTIONS, LABELS AND MARKINGS BEFORE INSTALLING, OPERATING OR
SERVICING THIS UNIT.
TOPIC
WARNING: Improper installation, adjustment, alteration, service or maintenance can cause property damage,
personal injury, exposure to hazardous materials or loss of life. Refer to the information contained in this
manual. A qualified installer, service agency or the utility supplier, who must read and follow the supplied
instructions before installing, servicing or removing this appliance, must perform installation and service.
WARNING: Do not use this appliance if any part has been under water. Immediately call a qualified service
technician to inspect the unit and to replace any part of the control system, and any other items affecting safe
appliance operation. Failure to follow these instructions can cause property damage, personal injury, or loss of
life.
TO THE INSTALLER: After installation, these instructions must be given to the equipment user or left near the appliance.
SPECIAL INSTRUCTIONS TO THE OWNER: Retain this manual for future reference. These instructions contain
important information that will help you in maintaining and operating this appliance.
PV 500-6
09/07
®
ELECTRIC WATER HEATERS
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Summary of Contents for PVI PV 500-6
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Page 1: Table Of Contents
TO THE INSTALLER: After installation, these instructions must be given to the equipment user or left near the appliance. SPECIAL INSTRUCTIONS TO THE OWNER: Retain this manual for future reference. These instructions contain important information that will help you in maintaining and operating this appliance. PV 500-6 09/07 ®... -
Page 2: Typical Construction
® DURAWATT ELECTRIC WATER HEATER TYPICAL CONSTRUCTION FIGURE 1 Without 23” Diameter Tank Access FIGURE 2 With 23” Diameter Tank Access PV500-6 09/07... -
Page 3: Important Safety Notice
® DURAWATT ELECTRIC WATER HEATER IMPORTANT SAFETY NOTE It takes only 5 seconds of skin contact with 140°F water to cause a second degree burn! You must protect against high water temperatures at all lavatories, tubs, showers and other points of hot water contact. -
Page 4: Checking Equipment Before You Install
5. The water heater is equipped with a temperature and pressure relief valve(s) rated for the input. Pipe the relief valve discharge to a suitable open drain. The drain pipe may not be smaller than the relief valve opening and must be secured to prevent it from lifting out of the drain under discharge pressure. -
Page 5: Clearances And Electrical Connections
Use proper wire size and branch circuit protection as required by National Electrical Code and state and local codes. The PVI electric water heater specification sheets show number and size of power connectors furnished with the heater for minimum 90°C copper connecting wire. -
Page 6: Start-Up Procedures And Operation
(Element Continuity Checks, page 10). If amperage exceeds these limits, immediately turn off main manual disconnect and refer to Electric Water Heater Trouble Shooting Guide (page 14). 6. Check magnetic contactors for noise. If noisy, i.e., buzzing or chattering, turn off main power disconnect, disassemble contactor and blow out foreign particles. -
Page 7: Maintenance
9. After startup and with the water heater operating, allow the water in the tank to reach the desired temperature and de- energize the heating elements. Draw hot water from a nearby faucet or outlet until the heating elements come back on. -
Page 8: Replacing Electric Elements
Important: Install the element facing away from the center of the head. Note: No stamp on element flange means that element is not bent. PV500-6 09/07 ® DURAWATT ELECTRIC WATER HEATER Typical Electric Element FIGURE 4 BEND ANGLE STAMP 25°... -
Page 9: Cleaning Electric Elements
® DURAWATT ELECTRIC WATER HEATER CLEANING ELECTRIC ELEMENTS Electric immersion INCOLOY® sheath elements are wound at high wattage ratings and must be completely covered by water while in operation. Otherwise, they overheat and burn out. Scale from the water will collect on the sheathing of the element over a period of time and must be removed periodically to extend the life of the element. -
Page 10: Element Continuity Checks
ELEMENT CONTINUITY CHECKS ELEMENT RATING CHECK OPEN COILS VOLT PV500-6 09/07 ® DURAWATT ELECTRIC WATER HEATER III. OHM READING 1 READING LEG OPEN NORMAL 76.5 76.5 19.5 19.5 TABLE 1 III. OHM READING OHM READING OHM READING 3 TERMINAL TO... -
Page 11: Contactor To Element Wiring
® DURAWATT ELECTRIC WATER HEATER TYPICAL SINGLE PHASE WIRING TYPICAL THREE PHASE WIRING FIGURE 8 FIGURE 6 TYPICAL WIRE TERMINATIONS FIGURE 9 FIGURE 7 FIGURE 10 PV500-6 09/07... -
Page 12: Typical Current Measurement
50 amps per contactor. *Applications for 600V use a re-rated 480V element. Therefore, the 40W/in. PV500-6 09/07 ® DURAWATT ELECTRIC WATER HEATER TYPICAL CURRENT MEASUREMENT 3 Ø AMPS PER ELEMENT AMPS PER LEG AMPS TOTAL 13 1/2... -
Page 13: Bolted Head Removal
® DURAWATT ELECTRIC WATER HEATER SUPERTANK™ BOLTED HEAD REMOVAL SUPERTANK™ water heaters and storage tanks will have one or more removable heads or bolted tank sections. The ® ® heads are used to mount an energy module (i.e. TURBOPOWER module, electric elements, QUICKDRAW or steam or water heat exchanger heating elements) or bolted head for access to the tank. -
Page 14: Troubleshooting
ELECTRIC WATER HEATER TROUBLESHOOTING GUIDE TROUBLE PROBABLE CAUSE Thermostat(s) Contractors will not pull in Control circuit switch is in OFF position Control circuit fuse blown Contractor(s) coil open No hot water Time delay sequencer not operating Proportional sequencer not operating...
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