Table of Contents
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MODELS BT- 80 AND 100 300/301 SERIES
COMMERCIAL GAS WATER HEATER
• INSTALLATION • OPERATION • SERVICE • MAINTENANCE • LIMITED WARRANTY
Thank you for buying this energy efficient water heater from
A.O. Smith Water Products Company. We appreciate your
confidence in our products.
PRINTED 0107
Glass-Lined Tank-Type Water Heater
PLACE THESE INSTRUCTIONS ADJACENT TO HEATER
AND NOTIFY OWNER TO KEEP FOR FUTURE REFERENCE.
TEXT IN BLACK BOLD TYPE OR UNDERLINED
CONTAINS INFORMATION RELATIVE TO YOUR
SAFETY. PLEASE READ THOROUGHLY BEFORE
INSTALLING AND USING THIS APPLIANCE.
McBEE, SOUTH CAROLINA, USA
www.aosmithwaterheaters.com
1
CAUTION
197569-000
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Related Manuals for A.O. Smith BT- 80
Summary of Contents for A.O. Smith BT- 80
- Page 1 MODELS BT- 80 AND 100 300/301 SERIES COMMERCIAL GAS WATER HEATER Glass-Lined Tank-Type Water Heater • INSTALLATION • OPERATION • SERVICE • MAINTENANCE • LIMITED WARRANTY Thank you for buying this energy efficient water heater from A.O. Smith Water Products Company. We appreciate your confidence in our products.
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Page 2: Rough-In Dimensions
168.9 Input Approx. Model Rating Rating Gal. Btu/Hr Cap. BT- 80 75,100 22.0 BT -100 75,100 22.0 Recovery ratings based on 80% thermal efficiency. FOREWORD The design of models BT-80 and 100 comply with the current edition of ANSI Z21.10.3-CSA 4.3 as automatic storage or automatic circulating tank type water heaters. -
Page 3: Table Of Contents
TABLE OF CONTENTS 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 ... -
Page 4: Extended Non-Use Periods
INSULATION BLANKETS Insulation blankets available to the general public for external use on gas water heaters are not approved for use on your A.O. Smith water heater. The purpose of an insulation blanket is to reduce the standby heat loss encountered with storage tank water heaters. -
Page 5: High Altitude Installations
Correct orifice sizing and parts may be obtained from A.O. Smith Water Products Company. When ordering, be sure to state the model number and the altitude of the location where the water heater is being installed. -
Page 6: Air Requirements
insulation, caulking, vapor barrier, etc.), air for combustion, ventilation and draft hood dilution must be obtained from outdoors. The installation instructions for confined spaces in tightly constructed buildings must be followed to ensure adequate air supply. CONFINED SPACE When drawing combustion and dilution air from inside a conventionally constructed building to a confined space, such a space shall be provided with two permanent openings, ONE IN OR WITHIN 12 "... -
Page 7: Venting
VENT CONNECTION Vent connections must be made to an adequate stack or chimney. Size and install proper size vent pipe. Do not reduce pipe size to less than that of the draft hood outlet. Horizontal runs of vent pipe must have a minimum upward slope toward the chimney of 1/4 inch per foot. -
Page 8: Gas Piping
GAS PIPING Contact your local gas service company to ensure that adequate gas service is available and to review applicable installation codes for your area. Size the main gas line in accordance with Table 1. The figures shown are for straight lengths of pipe at 0.5 in. W.C. pressure drop, which is considered normal for low pressure systems. -
Page 9: Gas Pressure Regulator
FIGURE 6-THERMOSTAT FOR NATURAL AND PROPANE GASES GAS PRESSURE REGULATOR The gas pressure regulator is built into the gas valve and is equipped to operate on the gas specified on model and rating plate. The regulator is factory adjusted to deliver gas to burner at correct water column pressure allowing for a nominal pressure drop through the controls. -
Page 11: Lighting Instructions
FOR YOUR SAFETY READ BEFORE LIGHTING WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. BEFORE LIGHTING: ENTIRE SYSTEM MUST BE FILLED WITH WATER AND AIR PURGED AT FAUCETS This appliance has a pilot which must be lighted by hand. -
Page 12: Temperature Regulation
WHERE THE GENERAL PUBLIC DOES NOT HAVE ACCESS. IF A SUITABLE AREA IS NOT AVAILABLE, A COVER SHOULD BE INSTALLED OVER THE THERMOSTAT TO PREVENT TAMPERING. Suitable covers are available through A.O. Smith Water Products Company. Time to Produce 2nd & 3rd... -
Page 13: High Temperature Limit Switch
WARNING FAILURE TO CORRECT BACK DRAFTS MAY CAUSE AIR CONTAMINATION AND UNSAFE CONDITIONS. • If the back draft cannot be corrected by the normal method or if a suitable draft cannot be obtained, a blower type flue gas exhauster must be employed to assure proper venting and correct combustion. -
Page 14: Vent System
A. O. Smith Water Products Company, 125 Southeast Parkway, Franklin, TN 37068 (1-800-433-2545). For Canada call or contact A.O. Smith Water Products Company, 768 Erie Street Stratford, ON N5A 6T3 (519-271-5800 x 401, or visit our website: www.aosmithwaterheaters.com. -
Page 15: Preventive Maintenance
PREVENTIVE MAINTENANCE RECOMMENDED PROCEDURE FOR PERIODIC REMOVAL OF LIME DEPOSITS FROM TANK TYPE COMMERCIAL WATER HEATERS The amount of calcium carbonate (lime) released from water is in direct proportion to water temperature and usage, see chart. The higher the water temperature or water usage, the more lime deposits are dropped out of the water. -
Page 16: Checklist
BT-80 and 100 models. UN•LIME with the necessary hoses and fittings to delime your heater is also available as a kit: Up-N-Down Transfer Kit. Contact your local A.O. Smith dealer, distributor or, A.O. Smith Water Products Company, Telephone: (800) 433-2545, Fax: (800) 433-2515 or Website: www.hotwater.com. - Page 17 if excessive, can drip into the floor shield. Also, during normal operation there may be occasions when large quantities of water are drawn, chilling the tank bottom. This too can result in condensation. • Condensation, appearing in the vent pipe (water dripping from draft diverter) during heater operation is evidence of poor vent action.
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Page 18: Limited Warranty
A. O. Smith Corporation, the warrantor, extends the following LIMITED WARRANTY to the owner of this water heater. THE TANK If the glass-lined tank in this water heater shall prove upon examination by the warrantor to have leaked due to natural corrosion from potable water therein, during the first THREE years after initial installation, the warrantor will supply a complete new A. - Page 20 A.O. SMITH WATER PRODUCTS COMPANY 500 Tennessee Waltz Parkway • Ashland City, TN 37015 PHONE: 1-800-527-1953 www.aosmithwaterheaters.com • E-MAIL: parts@hotwater.com...