A.O. Smith DSE-5 THRU DSE-120, Installation And Operaion Manual

Page 1: ...OUGHLY BEFORE INSTALLING AND USING THIS APPLIANCE KEEPTHISMANUALWITHTHEHEATERFORFUTUREREFERENCE WHENEVERMAINTENANCEADJUSTMENTSORSERVICEISREQUIRED PART NO 60047 004 REV 6 SUPERSEDES PART NO 60047 004 REV 5 A DIVISION OF A O SMITH CORPORATION RENTON WASHINGTON www hotwater com Dura Power Electric Models DSE 5 THRU DSE 120 COMMERCIAL WATER HEATERS PRINTED IN U S A 700 ...

Page 2: ... 223 205 189 176 75 255 975 1025 768 615 512 439 384 341 307 279 256 236 219 90 307 170 1229 922 738 615 527 461 410 369 335 307 284 263 Figured at 1KW 3413 Btu 4 1 Gallons at 100 F temperature rise To determine recovery rate per minute divide recovery rate per hour by 60 NSF ratings may be obtained by multiplying above figures by 0 98 Available on 50 gallon models or larger RECOVERY CAPACITY RECO...

Page 3: ... These diagrams will serve to provide the installer with a reference for the materials and method of piping suggested IT IS NECESSARY THAT ALL WATER PIPING AND THE ELECTRICAL WIRING BE INSTALLED AND CONNECTED AS SHOWN IN THE DIAGRAMS Particular attention should be given to the installation of thermometers at the locations indicated in the diagrams as these are necessary for checking the operation ...

Page 4: ...4 GETTING TO KNOW YOUR WATER HEATER Below is an illustration of the water heater with its features called out The text of this manual will refer to the items shown FIGURE1 ...

Page 5: ...IONAL ELECTRICAL CODE and NFPA 70 Copies of these codes may be obtained from American National Standards Institute 1430 Broadway New York NY 10018 If your location requires the installation of the water heater to comply with National Sanitation Foundation requirements the heater must be sealed to the floor so as to prevent seepage underneath the heater The following are recommended sealants that m...

Page 6: ...ISCHARGE OPENING MUST NOT BE BLOCKED OR REDUCED IN SIZE UNDER ANY CIRCUMSTANCES The pressure setting of the relief valve should not exceed the pressure capacity of any component in the system The temperature setting of the relief valve should not exceed 210 F TEMPERATURE LIMITING CONTROL The heater control circuit contains a high temperature cutoff switch which operates if excessive water temperat...

Page 7: ...N PAGES 17 18 IF HIGHER PREHEAT TEMPERATURES ARE NECESSARY TO OBTAIN ADEQUATE BOOSTER OUTPUT ADD AN ANTI SCALD VALVE FOR HOT WATER SUPPLIED TO FIXTURES CAUTION IF BUILDING COLD WATER SUPPLY HAS A BACK FLOW PREVENTER CHECK VALVE OR WATER METER WITH CHECK VALVE PROVISIONS FOR THERMAL EXPANSION OF WATER IN THE HOT WATER SYSTEM MUST BE PROVIDED PIPE TO OPEN DRAIN INSTALL IN ACCORDANCE WITH ALL LOCAL C...

Page 8: ...OR THERMAL EXPANSION OF WATER IN THE HOT WATER SYSTEM MUST BE PROVIDED PIPE TO OPEN DRAIN INSTALL IN ACCORDANCE WITH ALL LOCAL CODES DANGER TEMPERATURE SETTING SHOULD NOT EXCEED SAFE USE TEMPERATURE AT FIXTURES SEE WATER TEMPERATURE CONTROL WARNING ON PAGES 17 18 IF HIGHER PREHEAT TEMPERATURES ARE NECESSARYTOOBTAINADEQUATEBOOSTEROUTPUT ADD AN ANTI SCALD VALVE FOR HOT WATER SUPPLIED TO FIXTURES ...

Page 9: ... LOCAL CODES CAUTION IF BUILDING COLD WATER SUPPLY HAS A BACK FLOW PREVENTER CHECK VALVE OR WATER METER WITH CHECK VALVE PROVISIONS FOR THERMAL EXPANSION OF WATER IN THE HOT WATER SYSTEM MUST BE PROVIDED DANGER TEMPERATURE SETTING SHOULD NOT EXCEED SAFE USE TEMPERATURE AT FIXTURES SEE WATER TEMPERATURE CONTROL WARNING ON PAGES 17 18 IF HIGHER PREHEAT TEMPERATURES ARE NECCESARY TO OBTAIN ADEQUATE B...

Page 10: ...TER CHECK VALVE OR WATER METER WITH CHECK VALVE PROVISIONS FOR THERMAL EXPANSION OF WATER IN THE HOT WATER SYSTEM MUST BE PROVIDED NOTE BRANCH PIPING TO ALL HEATERS MUST BE SAME SIZE AND LENGTH FOR EQUAL FLOW THESE BRANCHES MAY BE SIZED UP TO 1 1 4 SO THAT CROSS SECTIONALAREASOFALLINLETSAND OUTLETS AT LEAST EQUAL AREA OF THEIR RESPECTIVE MAIN PIPING REVERSE RETURN PIPING SHOWN DANGER TEMPERATURE S...

Page 11: ...N THE HOT WATER SYSTEM MUST BE PROVIDED INSTALL IN ACCORDANCE WITH ALL LOCAL CODES NOTE BRANCH PIPING TO ALL HEATERS MUST BE SAME SIZE AND LENGTH FOR EQUAL FLOW THESE BRANCHES MAY BE SIZED UP TO 1 1 4 SO THAT CROSS SECTIONALAREASOFALLINLETSAND OUTLETS AT LEAST EQUAL AREA OF THEIR RESPECTIVE MAIN PIPING REVERSE RETURN PIPING SHOWN DANGER TEMPERATURE SETTING SHOULD NOT EXCEED SAFE USE TEMPERATURE AT...

Page 12: ...ATER THERMOSTAT SET AT LEAST 5 HIGHER INSTALL IN ACCORDANCE WITH ALL LOCAL CODES NOTE BRANCH PIPING TO ALL HEATERS MUST BE SAME SIZE AND LENGTH FOR EQUAL FLOW THESE BRANCHES MAY BE SIZED UP TO 1 1 4 SO THAT CROSS SECTIONALAREASOFALLINLETSAND OUTLETS AT LEAST EQUAL AREA OF THEIR RESPECTIVE MAIN PIPING REVERSE RETURN PIPING SHOWN DANGER TEMPERATURE SETTING SHOULD NOT EXCEED SAFE USE TEMPERATURE AT F...

Page 13: ...to compensate for voltage drop in long runs Branch circuit voltage drop should not exceed 3 at the heater TABLE 310 16 Allowable Ampacities of Insulated Conductors Not More Than Three Conductors in Raceway or Cable or Earth Directly Buried Based on Ambient Temperature of 30 C 86 F Size Temperature Rating of Conductor See table 310 13 Size 60 C 75 C 85 C 90 C 60 C 75 C 85 C 90 C 140 F 167 F 185 F 1...

Page 14: ... CIRCUIT Power circuit wiring is rated 600 volts 75 C WIRING DIAGRAMS The following wiring diagrams are included in this manual to show typical arrangement of electrical components in the control and power circuits by voltage and phase characteristics They are to be used as a reference by the installer or servicer in performing their work An actual diagram of the water heater wiring is furnished w...

Page 15: ...15 SMALLCOMMERCIALWIREDIAGRAM 208 240V 3PH SMALLCOMMERCIALWIREDIAGRAM 208 240V 3 1PH ...

Page 16: ...st be added according to the phase of the supply voltage See the diagram below For single phase connection jumpers A C and B D must be added For three phase connection jumper B C must be added 3 1 PHASE CONTACTOR JUMPER CONFIGURATION FIGURE 1 1 PHASE CONNECTION FIGURE 2 3 PHASE CONNECTION SMALLCOMMERCIALWIREDIAGRAM 300 600V 3PH ...

Page 17: ...17 SMALLCOMMERCIALWIREDIAGRAM SINGLEPHASE SMALLCOMMERCIALWIREDIAGRAM 300 600V 3PH ...

Page 18: ...URY AND OR DEATH THE TEMPERATURE AT WHICH INJURY OCCURS VARIES WITH THE PERSON S AGE AND TIME OF EXPOSURE THE SLOWER RESPONSE TIME OF DISABLED PERSONS INCREASES THE HAZARDS TO THEM NEVER ALLOW SMALL CHILDREN TO A HOT WATER TAP OR TO DRAW THEIR OWN BATH WATER NEVER LEAVE A CHILD DISABLED PERSON UNATTENDED IN A BATHTUB OR SHOWER THE WATER HEATER SHOULD BE LOCATED IN AN AREA WHERE THE GENERAL PUBLIC ...

Page 19: ...e heater drain valve and remove hose Turn on electricity SEDIMENT REMOVAL Water borne impurities consist of fine particles of soil and sand which settle out and form a layer of sediment on the bottom of the tank In time if not removed the level of sediment might reach the heating elements and cause their failure For convenience sediment removal and element lime scale removal should be performed at...

Page 20: ...CITY WHEN CHECKING EQUIPMENT Not enough or no hot water 1 Be certain the electrical disconnect switch serving the water heater is in the ON position 2 Check the fuses The electrical disconnect switch usually contains fuses 3 If the water was excessively hot and is now cold the high limit switch may have operated To reset remove the plug from the top cover of the heater and push the reset button Re...

Page 21: ... to replace the gaskets Refer to LEAKAGE CHECKPOINTS on page 22 IF YOU CANNOT IDENTIFY OR CORRECT THE SOURCE OF MALFUNCTION 1 Place the water heater electrical switch in the OFF position 2 Close the supply water inlet valve to the heater 3 Contact your dealer REPLACEMENT PARTS Replacement parts may be ordered through dealers authorized servicers or distributors Refer to Yellow Pages for where to c...

Page 22: ...sket NOTE Part No 5288 scale cleaning replacement screws available where threads have become rusted or damaged preventing tightening Condensation and dripping may appear on pipes when cold water temperature is low Pipe fitting may be leaking All water which appears at the heater bottom or on the surrounding floor may be caused by condensation loose connections or relief valve operation and leakage...

Page 23: ... costs Such costs may include but are not limited to a Labor charges for service removal repair or reinstallation of the water heater or any component part b Shipping delivery handling and administrative charges for forwarding the new heater or replacement part from the nearest distributor and returning the claimed defective heater or part to such distributor c All cost necessary or incidental for...

Page 24: ...24 5621 W 115TH STREET ALSIP IL 60803 Phone 800 433 2545 Fax 800 433 2515 www hotwater com E Mail parts hotwater com REPLACEMENTPARTS ...