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GENERAL SAFETY INFORMATION

PRECAUTIONS

DO NOT USE THIS APPLIANCE IF ANY PART HAS BEEN UNDER
WATER.  Immediately call a qualified service technician to inspect
the appliance and to replace any part of the control system and
any gas control which has been under water.

IF THE UNIT IS EXPOSED TO THE FOLLOWING, DO NOT
OPERATE HEATER UNTIL ALL CORRECTIVE STEPS HAVE
BEEN MADE BY A QUALIFIED SERVICEMAN.

1. EXTERNAL FIRE.
2. DAMAGE.
3. FIRING WITHOUT WATER.
4. SOOTING

GROUNDING INSTRUCTIONS

This water heater must be grounded in accordance with the
National Electric Code and/or local codes.  These must be
followed in all cases.

This water heater must be connected to a grounded metal,
permanent wiring system; or an equipment grounding conductor
must be run with the circuit conductors and connected to the
equipment grounding terminal or lead on the water heater, see
Figure 9.

CHEMICAL VAPOR CORROSION

 

WARNING

CORROSION OF THE FLUEWAYS AND VENT SYSTEM MAY
OCCUR IF AIR FOR COMBUSTION CONTAINS CERTAIN
CHEMICAL VAPORS.  SUCH CORROSION MAY RESULT IN
FAILURE AND RISK OF ASPHYXIATION.

Spray can propellants, cleaning solvents, refrigerator and air
conditioning refrigerants, swimming pool chemicals, calcium
and sodium chloride (water softener salt), waxes, and process
chemicals and typical compounds which are potentially corrosive.
Do not store products of this sort near the heater.  Also, air which
is brought in contact with a the heater should not contain any of
these chemicals.  If necessary, uncontaminated air should be
obtained from remote or outside sources.  The limited warranty
is voided when failure of water heater is due to a corrosive
atmosphere.  (Refer to the limited warranty for complete terms
and conditions.

IMPROPER COMBUSTION

 

WARNING

ATTIC AND/OR EXHAUST FANS OPERATING ON THE PREMISES
WITH A WATER HEATER CAN RESULT IN CARBON MONOXIDE
POISONING AND DEATH.

TABLE OF CONTENTS

ROUGH-IN-DIMENSIONS ..................................................... 2
FOREWORD .......................................................................... 2
GENERAL SAFETY INFORMATION ....................................... 3

Precautions ....................................................................... 3
Grounding Instructions ...................................................... 3
Chemical Vapor Corrosion ................................................ 3
Improper Combustion ...................................................... 3-4
Extended Non-Use ............................................................ 4
Insulation Blankets ............................................................ 4
High Altitude Installation .................................................... 4

FEATURES ............................................................................ 4

The Eliminator™ (Self-Cleaning System) .......................4-5
High Limit Switch ............................................................... 5
Electronic Ignition Control ................................................. 5
Exhaust Inducer (Blower Assy.) ......................................... 5
Circulating Pump ............................................................... 5
Dishwashing Machine Requirement ................................ 5

INSTALLATION INSTRUCTIONS ........................................... 6

Required Ability .................................................................. 6
Uncrating ........................................................................... 6
Locating The Heater .......................................................... 6
Levelling ............................................................................ 6
Clearances ........................................................................ 6
Hard Water ........................................................................ 6
Air Requirements ............................................................. 6-7
Venting .............................................................................. 7-8
Multiple Heater Manifold .................................................... 8
Water Line Connections ................................................... 8
Water (Potable) Heating and Space Heating .................... 8
Thermometers (Not Supplied) .......................................... 8
Relief Valve ........................................................................ 8
Gas Piping ......................................................................... 9
Purging .............................................................................. 9
Gas Pressure Regulator ................................................ 9-10
Heater Wiring .................................................................... 10

INSTALLATION DIAGRAMS ................................................ 11-17
OPERATION ......................................................................... 18

General ............................................................................ 18

SEQUENCE OF OPERATION .............................................. 18

Lighting and Operation.................................................... 19
Water Temperature Control ............................................. 20

PREVENTIVE MAINTENANCE ............................................ 20

Check The Ignitor Assembly ........................................... 20
Ignitor Assembly .............................................................. 20
Main Burner ...................................................................20-21
Gas Valves ....................................................................... 21
Checking The Input ......................................................... 21
Venting System ................................................................ 21
Remote Storage Tank Temperature Control ................... 21
Relief Valve ...................................................................... 22
Hot Water Odor ................................................................ 22
Anode Rod Inspection ..................................................... 22
Flushing ........................................................................... 22
Draining ........................................................................... 22
Recommended Procedure For Periodic
Removal of Lime Deposits From Tank Type
Commercial Water Heaters ..........................................22-23
Deliming Solvents ........................................................... 23
Tank Cleanout Procedures ...........................................23-24
Ignition Module System ................................................... 24
System Diagnostics ........................................................ 24

SERVICE ............................................................................. 24

Electrical Servicing .......................................................... 24
Replacement Parts ......................................................... 24
Sequence of Operation Flow Chart ................................. 25
Operational Checklist ...................................................... 26
Limited Warranty ............................................................. 27

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Page

Содержание BTR 151 THRU 201/A

Страница 1: ...in U S A 1004 PART NO 196308 001 ADIVISION OFA O SMITH CORPORATION McBEE SOUTH CAROLINA USA www aosmithwaterheaters com CAUTION TEXT IN BLACK BOLD TYPE OR UNDERLINED CONTAINS INFORMATION RELATIVE TO Y...

Страница 2: ...the absence of local codes the installation must comply with the latest editions of the National Fuel Gas Code ANSI Z223 1 NFPA 54 and the National Electrical Code NFPA 70 documents are available fro...

Страница 3: ...ater is due to a corrosive atmosphere Refer to the limited warranty for complete terms and conditions IMPROPER COMBUSTION WARNING ATTICAND OREXHAUSTFANSOPERATINGONTHEPREMISES WITHAWATER HEATER CAN RES...

Страница 4: ...the heater input rate should be reduced at high altitudes for satisfactory operation with the reduced oxygen supply Failure to make this reduction would result in an overfiring of the heater causing s...

Страница 5: ...R BLOWER ASSEMBLY All units are equipped with a exhaust inducer The inducer assists in drawing in fresh air to the unit for combustion and then assists in dispensing the combustion by products into th...

Страница 6: ...D BE LOCATEDINANAREAWHERELEAKAGEFROMTHEHEATEROR CONNECTIONS WILL NOT RESULT IN DAMAGE TO THE ADJACENTAREAORTOLOWERFLOORSOFTHESTRUCTURE WHEN SUCH LOCATIONS CANNOT BEAVOIDED ASUITABLE DRAINPANSHOULDBEIN...

Страница 7: ...protected from freezing downdrafts Remove all soot or other obstructions from the chimney that will retard a free draft Type B venting is recommended with these heaters This water heater must be vente...

Страница 8: ...ell Excessive pressure may develop in such closed systems causing premature tank failure or intermittent relief valve operation This is not a warranty failure An expansion tank or a similar device may...

Страница 9: ...THAT ALL GAS PIPE IS CLEANONTHEINSIDE TOTRAPANYDIRTORFOREIGNMATERIALINTHEGASSUPPLY LINE A DIRT LEG SOMETIMES CALLED SEDIMENT TRAP OR DRIP LEG MUST BE INCORPORATED IN THE PIPING SEE FIG 9 THE DIRT LEG...

Страница 10: ...with the latest version of the National Electrical Code ANSI NFPA No 70 must FIGURE10 SINGLEUNITWIRINGDIAGRAM conform to all local code authority having jurisdiction AN ELECTRICAL GROUND IS REQUIRED...

Страница 11: ...temperature and pressure relief valve of adequate capacity is installed on the heater The locations shown in the installation diagrams on the following pages are typical The discharge opening of the t...

Страница 12: ...D NOT EXCEED SAFE USE TEMPERATURE AT FIXTURES SEE WATER TEMPERATURE CONTROL WARNING ON PAGE 20 IF HIGHER PREHEAT TEMPERATURES ARE NECESSARY TO OBTAIN ADEQUATE BOOSTER OUTPUT ADD AN ANTI SCALD VALVE FO...

Страница 13: ...E TOGGLESWITCHMUSTBECLOSED ON DURING THERINSEOPERATIONANDOPEN OFF WHENDISHWASHER IS NOTOPERATING OR WHEN ON LONG STANDBY NOTE 2 INSTALLLINETEMPERATURECONTROLINANUNINSULATED TEEBEYONDTHEDISHWASHINGMACH...

Страница 14: ...ons shown in the installation diagrams on the following pages are typical TWO TEMPERATURE TWO HEATERS ONE PRE HEATER ONE BOOSTER HEATER WITH OR WITHOUT BUILDING RECIRCULATION The discharge opening of...

Страница 15: ...TE 3 ADJUST PLUG COCK SO THE SANITIZING LOOP FLOW RATE DOES NOT CAUSE UNNECESSARY TURBULENCE IN THE TANK PIPE RELIEF VALVE TO OPEN DRAIN INSTALL IN ACCORDANCE WITH LOCAL CODES CIRCULATING RETURN LINE...

Страница 16: ...RS WITH MIXING VALVE TWO PRE HEATERS WITH BOOSTER HEATER DANGER TEMPERATURE SETTING SHOULD NOT EXCEED SAFE USE TEMPERATURE AT FIXTURES SEE WATER TEMPERATURE CONTROL WARNING ON PAGE 20 IF HIGHER PREHEA...

Страница 17: ...STER OUTPUT ADD AN ANTI SCALD VALVE FOR HOT WATER SUPPLIED TO FIXTURES PIPE RELIEF VALVE TO OPEN DRAIN WHEN USING AN A O SMITH T 140 200 350 OR 400 STORAGE TANK USE LOWER 3 4 OPENING FOR TANK TEMPERAT...

Страница 18: ...in burner before going into lockout After the controller tries three times it will wait one hour before trying to light the unit again This cycle will continue until the main burners are ignited or th...

Страница 19: ...tes to clear out any gas If you then smell gas STOP Follow B in the safety information above on this label If you don t smell gas go on to the next step 7 Turn gas control knob counterclockwise to ON...

Страница 20: ...INJURYOCCURS VARIES WITH THE PERSON S AGE AND TIME OF EXPOSURE THE SLOWER RESPONSETIMEOFCHILDREN AGEDORDISABLEDPERSONS INCREASES THE HAZARDS TO THEM NEVER ALLOW SMALL CHILDREN TO USE A HOT WATER TAP...

Страница 21: ...o decrease gas pressure and input rate 4 Clock the meter as in step 2 above 5 Repeat steps 3 and 4 until the specified input rate is achieved 6 Turn the gas control knob to PILOT Remove the pressure g...

Страница 22: ...for cleaning inspection or removal of inner parts you obtain two new nipple collars part no 74060 The nipple collars on the heater will usually be damaged when removed New pipe collars will insure th...

Страница 23: ...sed DELIMINGUSINGFLO JUGMETHOD UN LIME in the 5 gallon size is recommended for deliming of the BT 80 100 models UN LIME with the necessary hoses and fittings to delime your heater is also available as...

Страница 24: ...luding the complete model and serial number as it appears on the product Refer to the parts list for more information REPLACEMENT PARTS 7 Lower container you may have to place the container on its emp...

Страница 25: ...engages Prover Switch Ignition Control Board provides power to Silicon Nitride Ignitor Silicon Nitride Ignitor warms up for 20 seconds Ignition Control Board opens Gas Valve Ignition Control Board sh...

Страница 26: ...Replace dual bulb controller if differential is too wide greater than 4 F Heater recovery is slower Call serviceman Check gas input If incorrect adjust gas pressure or replace main burner orifice Dra...

Страница 27: ...valves etc is installed in the cold water supply the heater is connected to unless an effective method of controlling thermal expansion is also installed at the heater s and operational at all times T...

Страница 28: ...28 A O SMITH WATER PRODUCTS COMPANY 5621 W 115TH STREET ALSIP ILLINOIS 60803 PHONE 1 800 433 2545 FAX 1 800 433 2515 www aosmithwaterheaters com E MAIL parts hotwater com...

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