A.O. Smith BT- 80 warranty Table of Contents

TABLE OF CONTENTS	Page
ROUGH-IN DIMENSIONS	2
FOREWORD	2
GENERAL SAFETY INFORMATION	3-4
Precautions	3
Chemical Vapor Corrosion	3
Improper Combustion	3
Liquid Petroleum Models	3-4
Extended Non-use Periods	4
Insulation Blankets	4
Circulating Pump	4
INSTALLATION INSTRUCTIONS	4-9
Required Ability	4
Locating The Heater	4-5
High Altitude Installations	5
Clearances	5
Hard Water	5
Air Requirements	5-6
Water (Potable) Heating and Space Heating	6
Venting	6-7
Thermometers (Not Supplied)	7
Relief Valve	7
Gas Piping	8-9
Gas Pressure Regulator	9

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OPERATION	9-13
To Operate The Water Heater	9
Purging	9
Lighting Instructions	10-11
Temperature Regulation	12
Check Venting	12-13
High Temperature Limit Switch	13
SERVICE INFORMATION	13-14
Pilot and Main Burner	13
Checking Gas Input	13-14
Vent System	14
Relief Valve	14
Hot Water Odor	14
Anode Rod Inspection	14
Winter Protection	14
Replacement Parts	14
PREVENTIVE MAINTENANCE	15-16
Recommended Procedure For Periodic Removal Of Lime
Deposits From Tank Type Commercial Water Heaters	15
Deliming Solvents	15
Tank Cleanout Procedure	15-16
CHECKLIST	16-17
LIMITED WARRANTY	18

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

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 are typical compounds which are potentially corrosive. Do not store products of this sort near the heater. Also, air which is brought in contact with 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.

OPERATION OF THESE FANS CAN PRODUCE A NEGATIVE DRAFT IN THE AREA OF THE WATER HEATER PREVENTING THE PRODUCTS OF COMBUSTION FROM EXHAUSTING THROUGH THE CHIMNEY OR VENT PIPE.

The venting of the water heater should be inspected by a qualified service technician at the time of installation and periodically thereafter to ensure a down-draft condition does not exist.

DO NOT OBSTRUCT THE FLOW OF COMBUSTION AND VENTILATING AIR. ADEQUATE AIR FOR COMBUSTION AND VENTILATION MUST BE PROVIDED FOR SAFE OPERATION.

LIQUID PETROLEUM MODELS

Water heaters for propane or liquefied petroleum gas (LPG) are different from natural gas models. A natural gas heater will not function safely on LP gas and no attempt should be made to convert a heater from natural gas to LP gas.

LP gas must be used with great caution. It is highly explosive and heavier than air. It collects first in the low areas making its odor difficult to detect at nose level. If LP gas is present or even suspected, do not attempt to find the cause yourself. Go to a neighbor's house, leaving your doors open to ventilate the house, then call your gas supplier or service agent. Keep area clear until a service call has been made.

At times you may not be able to smell an LP gas leak. One cause is odor fade, which is a loss of the chemical odorant that gives LP gas its distinctive smell. Another cause can be your physical condition, such as having a cold or diminishing sense of smell with age. For these reasons, the use of a propane gas detector is recommended.

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