background image

DURAWATT

® 

ELECTRIC WATER HEATER 

 

PV500-6   09/07

 

4

 

 

 

CHECKING EQUIPMENT BEFORE YOU INSTALL 

 
Inspect the unit completely upon receipt from the freight carrier before signing the bill of lading. Inspect the appliance and 
all accompanying parts for signs of impact or mishandling. Verify the total number of pieces shown on packing slips with 
those actually received. Contact the freight carrier immediately if any damage or shortage is detected. 

 

 

WARRANTY 
 

Factory warranty does not cover improper installation or operation.  (See warranty for complete details). 
Warranty exclusions include but are not limited to failure or malfunctions resulting from: 
 

1.  Failures to properly apply, install, operate, or maintain the appliance in accordance to printed instructions. 
2.  Abuse, alteration, accident, fire, flood and the like. 
3.  Sediment or lime buildup, freezing or any other conditions causing inadequate circulation.  
4.  Corrosive or contaminated atmosphere. 

 

 

CODES 

 
The equipment shall be installed in accordance with those installation regulations in force in the local area where the 
installation is to be made. These shall be carefully followed in all cases. Authorities having jurisdiction shall be consulted 
before installation is made. In the absence of such requirements, the installation shall conform to the latest edition of the 
National Electrical Code. 

 
 

LOCATION 

 

1.  Locate the unit in a clean and dry area as close as possible to the greatest hot water usage and as near to electrical 

power as practical. 

2.  Install the unit on a firm, level foundation. 
3.  Locate the foundation on a pitched floor near a suitable drain, or make other provisions to prevent contact to areas 

of the building subject to water damage should the boiler or a water connection leak. The drain must be sufficient to 
contain water in excess of 210°F. 

 
 

INSTALLATION 

 

WARNING:  Use industry standard safe rigging methods when attempting to lift or move this product. Failure to 
follow these instructions could result in property damage, serious injury or death. One common method includes 
the use of straps and spreader bars, lifting from the water heater base skid assembly. 

 

 
1.  Check the data decal on the heater. Be sure the electrical supply is adequate for the installation. 
 
2.  Carefully remove all shipping supports and bracing. (Float type devices have shipping plugs blocking the float). 
 
3.  Install shut-off valves and unions on the inlet and outlet water piping for servicing. Use caution when threading pipe 

nipples into tank connections to prevent cross threading, or over-tightening. Always use a back-up wrench on tank 
nipples when tightening unions, valves, etc. 

 
4.  Insulate hot water and return circulation lines. Insulate cold water supply lines if subject to freezing during shutdown 

periods. 

IMPORTANT: Do not use the plumbing connected to the appliance as a ground for welding or any 

other purpose. 

 

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. Do not install valves or restrictions in the 
discharge line.

 

 
6.  Pipe the drain valve to a suitable open drain. 

Summary of Contents for 500-6

Page 1: ...t 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 installatio...

Page 2: ...DURAWATT ELECTRIC WATER HEATER PV500 6 09 07 2 TYPICAL CONSTRUCTION FIGURE 1 Without 23 Diameter Tank Access FIGURE 2 With 23 Diameter Tank Access ...

Page 3: ...THE PHYSICALLY HANDICAPPED HOSPITALS AND NURSING HOMES ELDER CARE FACILITIES AND REST HOMES ORPHANAGES AND CHILD CARE FACILITIES OTHER INSTALLATIONS WHERE RESPONSE TO CONTACT WITH HOT WATER MAY BE SLOWER OR WHERE THE DANGER OF HOT WATER CONTACT IS GREATER Thermostatically controlled mixing valves must be used in the design of the potable hot water system Potable hot water should be tempered to no ...

Page 4: ... 3 Locate the foundation on a pitched floor near a suitable drain or make other provisions to prevent contact to areas of the building subject to water damage should the boiler or a water connection leak The drain must be sufficient to contain water in excess of 210 F INSTALLATION WARNING Use industry standard safe rigging methods when attempting to lift or move this product Failure to follow thes...

Page 5: ...MPORTANT Check all wiring connections in heater and element enclosure to assure tightness prior to energizing NOTE Use only copper wire of proper sizing for incoming service Damage resulting from use of aluminum wiring is excluded from coverage under the warranty of this unit ELECTRONIC LOW WATER CUTOFF The device consists of a probe in the tank that acts as a switch closed when submerged in water...

Page 6: ...e elements have 3 terminals 1 phase elements have 6 terminals FIGURE 3 2 Check all electrical connections for tightness before turning the unit on 3 Energize manual disconnect switch Check for proper voltage with voltmeter on power circuit Voltage should not vary more than 5 from voltage shown on data plate If voltage exceeds these limits immediately turn off main disconnect and contact utility co...

Page 7: ...proper performance MAINTENANCE A preventative maintenance program is required to ensure a long trouble free life of the water heater Maintenance Schedule COMPONENT OPERATION INTERVAL REQUIRED Tank Sediment Removal Every 3 Months Flushing Relief Valve Inspect Every 6 Months Test Electrical Connections Inspect Monthly Inspect for wire discoloration Electric Elements Check Every 6 Months Amp Draw Ele...

Page 8: ...ief valve mounting location Low Water Cut Off The standard low water control is electronic Inspection should be made of the electrode on water heaters equipped with electronic low water devices Electrical Connections Check all electrical connections approximately one to two weeks after initial start up to assure tightness Heating and cooling from operation can loosen connections Visually inspect w...

Page 9: ...of the scale buildup is also determined by the watt density of the element It is good maintenance practice to remove and clean 80 W in 18kW density elements on a monthly basis The interval between removal and cleaning can usually be extended to six months when 40 W in 9kW density elements are installed Most installations where 20 W in 4 1 2kW density elements are used require only annual cleaning ...

Page 10: ... READING MAY VARY FROM ZERO DIRECT SHORT TO SEVERAL HUNDRED OHMS PARTIAL SHORT IN ANY CASE WHERE THE OHM READING IS NOT INFINITY THE ELEMENT SHOULD BE REPLACED B C 26 39 39 C A 26 39 18 240 A B 7 20 B C 7 10 10 C A 7 10 18 208 A B 5 15 B C 5 7 5 7 5 C A 5 7 5 9 480 A B 51 153 B C 51 76 5 76 5 C A 51 76 5 9 240 A B 13 39 B C 13 19 5 19 5 C A 13 19 5 9 208 A B 10 30 B C 10 15 15 C A 10 15 4 5 480 A ...

Page 11: ...DURAWATT ELECTRIC WATER HEATER PV500 6 09 07 11 FIGURE 7 FIGURE 6 TYPICAL WIRE TERMINATIONS FIGURE 8 TYPICAL SINGLE PHASE WIRING TYPICAL THREE PHASE WIRING FIGURE 10 FIGURE 9 ...

Page 12: ...efore the 40W in 2 is rated for 14 kW instead of 9 kW KW VOLTAGE 3 Ø AMPS PER ELEMENT 1 Ø AMPS PER ELEMENT AMPS PER LEG AMPS TOTAL AMPS PER LEG AMPS TOTAL 14 kW 600V 13 1 2 13 1 2 7 kW 600V 7 7 18 kW 480V 22 22 9 kW 480V 11 11 4 5 kW 480V 5 1 2 5 1 2 18 kW 240V 44 44 25 75 9 kW 240V 22 22 13 38 4 5 kW 240V 11 11 6 18 18 kW 208V 50 50 29 87 9 kW 208V 25 25 15 44 4 5 kW 208V 12 1 2 12 1 2 7 22 TABLE...

Page 13: ...ecial fasteners with similar grade 8 bolts washers and nuts Install the flange bolts and nuts with a flat washer under each bolt head and nut First snug them in an alternating star pattern Then using a calibrated torque wrench and in an alternating star pattern tighten the bolts in 2 increments 95 ft lbs and 145 ft lbs Use a small amount of silicone RTV to hold the o ring in place while positionin...

Page 14: ...put Consult local PVI representative Hot water lines not insulated Add insulation it will protect against heat loss and save on cost of operation Power fuse s blown Check fuses for continuity Replace if blown If blown determine cause of break before replacing with same type fuse Contractor s not closing Check coil for continuity If defective replace Thermostat s not correctly set Check to assure p...

Reviews: