A.O. Smith ***81-140 Installation, Service, Maintenance Download

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COMMERCIAL GAS

Lined Tank Type Water Heater

•

Installation

•

Service

•

Maintenance

PLACE THESE INSTRUCTIONS ADJACENT TO HEATER AND

NOTIFY OWNER TO KEEP FOR FUTURE REFERENCE.

PRINTED IN U.S.A. 1102

PART NO. 195091-000

CAUTION

TEXT PRINTED OR OUTLINED IN RED CONTAINS
INFORMATION RELATIVE TO YOUR SAFETY. PLEASE READ
THOROUGHLY BEFORE INSTALLING AND USING THIS
APPLIANCE.

Summary of Contents for ***81-140

Page 1: ...ance PLACETHESEINSTRUCTIONSADJACENTTOHEATERAND NOTIFYOWNERTOKEEPFORFUTUREREFERENCE PRINTED IN U S A 1102 PART NO 195091 000 CAUTION TEXT PRINTED OR OUTLINED IN RED CONTAINS INFORMATION RELATIVE TO YOU...

Page 2: ...NSUMPTION AND PERFORMANCE DATA STORAGE MAXIMUM MODELS CAPACITY IMPUT RATING RECOVERY RATE RECOVERY RATE AMPERES U S GALLONS BTU HR GPH 100 F RISE GPH 140 F RISE 120V 60Hz 1 81 140 81 140 000 136 97 5...

Page 3: ...stion 4 Liquid Petroleum Models 4 Extended Non Use Periods 4 Insulation Blankets 4 High Altitude Installation 4 5 FEATURES High Limit Switch E C O 5 Circulating Pump 5 Dishwashing Machine Requirements...

Page 4: ...injury under these conditions it is recommended that the hot water faucet be opened for several minutes at the kitchen sink before using any electrical appliance connected to the hot water system If h...

Page 5: ...No 70 Only all bronze circulators are used with commercial water heaters Although circulators are oiled and operated by the manufacturer some circulators must be oiled again before operating Please r...

Page 6: ...ce under the heater with the hollows running continuously and horizontally A 3 16 inch steel plate must cover the concrete blocks see fig 2 NOTE If electrical conduits run under the floor of the propo...

Page 7: ...TION OF FLUE GASES SUCH CONDITIONS CAUSE SOOTING OR RISKS OF FIRE AND ASPHYXIATION Type B venting may be used with these heaters All local and utility regulations on venting should be followed BAROMET...

Page 8: ...verly tighten the bolts or the cleanout gasket will be damaged Tighten each bolt gradually and alternate between opposed bolts on the cleanout cover BURNER INSTALLATION Remove the factory installed in...

Page 9: ...HE DRIP LEG MUST BE READILY ACCESSIBLE REFER TO FIG 8 AND NOT SUBJECT TO FREEZING CONDITIONS INSTALL IN ACCORDANCE WITH RECOMMENDATIONS OF SERVICING GAS SUPPLIERS REFER TO THE NATIONAL FUEL GAS CODE L...

Page 10: ...m 3 This unit may NEVER be connected to any existing heating system or component s previously used with a non potable water heating appliance 4 When the system requires water for space heating at temp...

Page 11: ...11 WIRING FOR 81 140 THRU 81 370 FIGURE 9 SCHEMATIC DIAGRAM WIRING DIAGRAM...

Page 12: ...GE 17 19 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...

Page 13: ...R WITHOUT RECIRCULATION FOR STORAGE OR INSTANTANEOUS HEATERS ONLY TWO TEMPERATURE TWO PRE HEATERS HIGH TEMPERATURE STORAGE WITH OR WITHOUT RECIRCULATION FOR STORAGE OR INSTANTANEOUS HEATERS ONLY CAUTI...

Page 14: ...SEE MANIFOLD KIT SPECIFICATIONS WIRING DIAGRAM FOR FIXTURE OR BOOSTER LOOP IF USED OTHER THAN DISHWASHER PIPE RELIEF VALVE TO OPEN DRAIN TEMPERATURE SETTING OF PRE HEATER SHOULD BE 120 F MIN OR 150 F...

Page 15: ...OR TWO TEMPERATURE ONE HEATER MEDIUM TEMPERATURE STORAGE WITH RECIRCULATED LOOP FOR STORAGE OR INSTANTANEOUS HEATERS ONLY CAUTION IF BUILDING COLD WATER SUPPLY HAS A BACK FLOW PREVENTER CHECK VALVE O...

Page 16: ...d storage potential of the system cannot be achieved Plus the units with the higher water flow may have a shortened life Unions shown in piping diagrams are not included in the manifold kits Dimension...

Page 17: ...pressure tapping Check voltage at disconnect switch to make certain that it matches that shown on the burner label Apply a few drops of No 20 SAE non detergent oil to motor bearings Drill max 5 16 ho...

Page 18: ...NFORMATION ABOVE ON THIS LABEL 2 REMOVE APPLIANCE THERMOSTAT COVER ROTATE THE THERMOSTAT DIAL COUNTERCLOCKWISE TO LOWEST SETTING 3 TURN OFF ALL ELECTRIC POWER TO THE APPLIANCE 4 THIS APPLIANCE IS EQUI...

Page 19: ...altitude up to 2000 feet as it is within 2 of the rated input For installations at higher altitudes the input will be less for the reasons explained in the FOREWORD The input may be adjusted by adjus...

Page 20: ...is suggested the drain valve be left open during this period Reverse these instructions when restoring hot water service SEDIMENT REMOVAL Waterborne impurities consist of fine particles of soil and s...

Page 21: ...y lowering the pressure Contact your water supplier or local plumbing inspector on how to control this situation Two common corrections are listed in the Checklist and Service Information which appear...

Page 22: ...re 4 Colder incoming water temperature will lengthen the time required to heat water to the desired temperature If the heater was installed when incoming water temperature was warm colder water create...

Page 23: ...y terminal 4 and strip terminal 2 If no voltage motor relay is defective If voltage present motor is defective MOTOR RUNS IN REPEATED CYCLES NO FLAME PRESENT 1 Motor relay drops out due to low voltage...

Page 24: ...No Decimal 81 140 HSG 200 62459 001 0 24 62459 001 0 209 81 199 HSG 200 62459 001 0 38 62459 001 0 257 81 270 HSG 400 62459 002 0 368 62459 002 0 302 81 370 HSG 400 62459 002 0 532 62459 002 0 386 MAI...

Page 25: ...659 160659 160659 160659 ASME 68065 68065 68065 68065 California 42985 42985 42985 42985 Caution Electric 98299 98299 98299 98299 Cleanout 97444 97444 97444 97444 Clearance 190105 190105 190105 190105...

Page 26: ...26 MODELHSG200 400GASBURNER...

Page 27: ...er 6206 25 17 Air Proving Switch Only 6206 26 18 Air Proving Switch Mounting Plate Slot Cover Assembly 6206 27 19 Thermostat Terminal Strip 6206 28 20 Adjustment Arm Off Cycle Damper 6206 29 21 Off Cy...

Page 28: ...28...

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