A.O. Smith BTF-80 Manual
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A.O. Smith BTF-80 Manual

Commercial power vent gas water heater with hot surface ignition
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COMMERCIAL POWER VENT GAS WATER HEATER
Thank you for buying this energy efficient water heater.
We appreciate your confidence in our products.
You should thoroughly read this manual before installation and/
or operation of this water heater. Please pay particular attention
to the important safety and operating instructions as well as the
WARNINGS and CAUTIONS.
KEEP THIS MANUAL IN THE POCKET ON THE HEATER FOR FUTURE REFERENCE
PRINTED IN U.S.A. 0406
MODEL BTF-80
with Hot Surface Ignition
WHENEVER MAINTENANCE ADJUSTMENT OR SERVICE IS REQUIRED.

TABLE OF CONTENTS

MAINTENANCE AND
TROUBLESHOOTING WITH THE LEDs
T E X T P R I N T E D O R O U T L I N E D I N R E D C O N T A I N S
INFORMATION RELATIVE TO YOUR SAFETY. PLEASE
READ THOROUGHLY BEFORE INSTALLING AND USING
THIS APPLIANCE.
1
PAGE
14-16
16-19
CAUTION
PART NO. 197440-000
2-3
4-5
5-14
20
24

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Summary of Contents for A.O. Smith BTF-80

  • Page 1: Table Of Contents

    MODEL BTF-80 COMMERCIAL POWER VENT GAS WATER HEATER with Hot Surface Ignition Thank you for buying this energy efficient water heater. We appreciate your confidence in our products. You should thoroughly read this manual before installation and/ or operation of this water heater. Please pay particular attention to the important safety and operating instructions as well as the WARNINGS and CAUTIONS.

  • Page 2: Model

    RECOVERY CAPACITIES Recovery capacity based on 80% thermal efficiency. FOREWORD The design of model BTF-80 complies with the current version carefully followed in all cases. Authorities having jurisdiction of ANSI Z21.10.3/CSA 4.3 as automatic storage or automatic should be consulted before installations are made.

  • Page 3: Get To Know Your Water Heater

    GET TO KNOW YOUR WATER HEATER REPLACEMENT PARTS AND DELIMING PRODUCTS VENT PIPE INLET DIP TUBE ANODE TEMPERATURE AND HOT WATER OUTLET PRESSURE RELIEF VALVE Replacement parts and recommended delimer may be ordered OUTLET (120 VAC) RATING PLATE through authorized servicers or distributors. Refer to the Yellow FLUE BAFFLE INSULATION Pages for where to call or contact the water heater manufacturer...

  • Page 4: General Safety Information

    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 GENERAL SAFETY INFORMATION odor difficult to detect at nose level. If LP gas is present or even suspected, do not attempt to find the cause yourself.

  • Page 5: Installation

    sides and rear, 5.5" (14 cm) from the front and 12" (30 cm) from • Do not cover the instruction manual. Keep it on the side of the the top. (Standard clearance.) If clearances stated on the heater water heater or nearby for future reference. differ from standard clearances, install water heater according to clearances stated on heater.
  • Page 6 WATER CONNECTIONS of screens, louvers and grills should be considered. Screens shall not be of a mesh smaller than 1/4" (6.3 mm) square. If the free area is not known, the National Fuel Gas Code, ANSI Z223.1/NFPA Refer to figure 1 for typical installation. A suitable pipe thread 54 or the Natural Gas and Propane Installation Code CAN/CSA sealant must be used to prevent leakage.\ B149.1 recommends using figures of 20-25 percent free area for...
  • Page 7 WARNING VENT HOOD(S) MAY BE EXTREMELY HOT DURING OPERATION. U.S. HORIZONTAL VENT CLEARANCES CANADIAN HORIZONTAL VENT CLEARANCES FIGURE 3...
  • Page 8 MAY CAUSE IMPROPER OPERATION, FIRE OR EXPLOSION. NOT USE MATCHES CANDLES, FLAME OR OTHER SOURCES OF IGNITION TO LOCATE GAS LEAKS. All piping must comply with local codes and ordinances or with the National Fuel Gas Code NFPA 70 or the Natural Gas and Propane RELIEF VALVE Installation Code CAN/CSA B149.1, whichever applies.
  • Page 9 Gas Code, ANSI Z223.1/NFPA 54 or the Natural Gas and Propane Installation Code CAN/CSA B149.1. PLANNING THE VENT SYSTEM Plan the route of the vent system from the discharge of the blower to the planned location of the vent terminal. 1.
  • Page 10 PREPARATION OF BLOWER ASSEMBLY 3/8" drain hose can be connected to the built-in drain port of the rubber boot on the blower assembly. For your convenience, the rubber boot is supplied with a removable cap on the built-in 1. Check to make sure that the wire harness is attached to the drain port.
  • Page 11 CAUTION LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICING CONTROLS. WIRING ERRORS CAN CAUSE IMPROPER AND DANGEROUS OPERATION. VERIFY PROPER OPERATION AFTER SERVICING. POWER VENT WIRING SCHEMATIC - FIGURE 7...
  • Page 12 5. The blower discharge boot is made to accept only straight NOTE: The equivalent length of pipe listed above are exclusive sections of 3" pipe. To start off with an elbow, a short section of the "45° Elbow" termination with installed screen. of the furnished pipe, a minimum of 2 inches (5.1 cm), must be cut and glued into the end of the elbow that will mount on Provide support for all pipe protruding through the roof.
  • Page 13 F. Contact the manufacturer, supplier, or competent consulting agency if you have any questions about the application or installation of PVC and CPVC pipe. G. Take the time and effort to do a professional job. Shortcuts will only cause you problems and delays in start-up. By far, the majority of failures in PVC and CPVC systems are the result of shortcuts and/or improper joining techniques.

  • Page 14: Operation

    Apply primer to the surface of the pipe and fitting socket with The joint should not be disturbed immediately after the a natural bristle brush (see chart). This process softens and cementing procedure, and sufficient time should be prepares the PVC or CPVC for the solvent cementing step. allowed for proper curing of the joint.

  • Page 15: Operating 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 OPERATING: ENTIRE SYSTEM MUST BE FILLED WITH WATER AND AIR PURGED FROM ALL LINES. A.
  • Page 16 TAMPERING. Suitable covers are available through A.O. Smith Water Products Company, 500 Tennessee Waltz Parkway, Ashland City, TN 37015. In Canada, A.O. Smith Enterprises, LTD., P.O. Box 310-768 Erie Street, Stratford, Ontario N5A 6T3. It is recommended that lower water temperatures be used to avoid the risk of scalding.
  • Page 17 POWER VENTER MAINTENANCE USERS OF THIS APPLIANCE SHOULD BE AWARE THAT GAS COMPONENTS WEAR OUT OVER A PERIOD OF TIME. THE The water heater must be inspected quarterly. Points of GAS CARRYING COMPONENTS OF THIS APPLIANCE SHOULD inspection are: BE INSPECTED FOR PROPER OPERATION PERIODICALLY BY A QUALIFIED SERVICE TECHNICIAN.

  • Page 18: Troubleshooting

    If the heater is to be shut off and exposed to freezing temperatures, If you are having a problem with your water heater and are not it must be drained. Water, if left in the tank and allowed to freeze, pleased with the service you received: will damage the heater.
  • Page 19 WARNING: DO NOT BY-PASS ANY CONTROLS TO MAKE HEATER OPERATE. OPERATE ONLY AS WIRED FROM FACTORY. TROUBLE SHOOTING For your safety, water heater service should be performed only by a qualified service technician. Read the GENERAL SAFETY INFORMATION section first. PROBLEM POSSIBLE MALFUNCTION SERVICE TO BE PERFORMED...
  • Page 20 WARNING: DO NOT BY-PASS ANY CONTROLS TO MAKE HEATER OPERATE. OPERATE ONLY AS WIRED FROM FACTORY. TROUBLESHOOTING Please check guidelines below. For your safety, water heater service should be performed only by a qualified service technician. Read the GENERAL SAFETY INFORMATION section first. LED STATUS PROBLEM SOLUTION...
  • Page 21 NOTES:...
  • Page 22 NOTES:...
  • Page 23 NOTES:...

  • Page 24: Warranty

    Model BTF 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.

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