A.O. Smith BTH 120-250(A) - Manual

A.O. Smith BTH 120-250(A)

A.O. Smith BTH 120-250(A) – Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.

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Table of Contents:

  • Page 2 – FOREWORD; GAS VALVE PIPING
  • Page 3 – DANGER; FEATURES; IMPORTANT; TABLE OF CONTENTS; PAGE
  • Page 4 – DISHWASHING MACHINE REQUIREMENT; INSTALLATION INSTRUCTIONS; REQUIRED ABILITY
  • Page 5 – Do not cover the temperature & pressure relief valve.; FIGURE 3; FIGURE 4
  • Page 6 – UNDERSIZED OPENINGS
  • Page 7 – FIGURE 5; DIRECT VENT; FIGURE 6
  • Page 8 – TRANSMITTED INTO THE LIVING SPACES.; FIGURE 7
  • Page 9 – FIGURE 9; Vent terminals supplied with the heater must be used.
  • Page 11 – CONTROLS AND SWITCHES; BLOWER PROVER SWITCH; Table 2. VENT LENGTH TABLE
  • Page 12 – GAS PIPING; DO NOT USE FLEXIBLE GAS PIPING.
  • Page 13 – SYSTEM CONNECTIONS
  • Page 14 – NEVER; WHC1202 INTEGRATED WATER HEATER CONTROL CONNECTION DIAGRAM
  • Page 15 – OPERATION; SEQUENCE OF OPERATION; SELF DIAGNOSTIC CONTROLLER; ITEM DESCRIPTION
  • Page 18 – OPERATING INSTRUCTIONS; CAUTION; HE MAIN MANUAL GAS SHUTOFF VALVE MUST HAVE BEEN CLOSED
  • Page 19 – FOR YOUR SAFETY READ BEFORE OPERATING; If you do not follow these instructions exactly, a fire or
  • Page 20 – F THE UNIT IS EXPOSED TO THE FOLLOWING, DO NOT OPERATE HEATER; GENERAL INFORMATION; BTH HEATERS ARE CERTIFIED FOR USE WITHOUT MODIFICATION FOR; MAINTENANCE; COMPONENT; GAS SUPPLY SPECIFICATIONS
  • Page 22 – To inspect or replace an anode:; DRAIN VALVE AND ACCESS PANELS
  • Page 23 – INSTALLATION DIAGRAMS; WITH OR WITHOUT BUILDING RECIRCULATION
  • Page 24 – TWO TEMPERATURE - ONE HEATER HIGH TEMPERATURE
  • Page 25 – MUST BE IDENTICAL HEATERS
  • Page 28 – MANIFOLD KITS; Space for the venting system and unit servicing must be added.
  • Page 29 – CHECKLIST AND SERVICE INFORMATION; WARNING; VERIFY PROPER OPERATION AFTER SERVICING.
  • Page 31 – Model BTH Limited Warranty
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1

A DIVISION OF A.O. SMITH CORPORATION

Mc BEE, SOUTH CAROLINA

PLACE THESE INSTRUCTIONS ADJACENT TO HEATER AND

NOTIFY OWNER TO KEEP FOR FUTURE REFERENCE.

PRINTED IN U.S.A. 1104

PART NO. 196145-001

CYCLONE XHE

®

Model BTH 120-250(A)

SERIES 970 AND 973

COMMERCIAL GAS WATER HEATER

GAS-FIRED POWER BURNER

FOR DOMESTIC HOT WATER

Thank you for buying this energy efficient water heater from
A.O. Smith Water Products Company. We appreciate your
confidence in our products.

CAUTION

TEXT IN BLACK BOLD TYPE OR UNDERLINED CONTAINS
INFORMATION RELATIVE TO YOUR SAFETY. PLEASE
READ THOROUGHLY BEFORE INSTALLING AND USING
THIS APPLIANCE.

• INSTALLATION • OPERATION • SERVICE • MAINTENANCE • LIMITED WARRANTY

WARNING: If the information in these

instructions is not followed exactly, a fire
or explosion may result causing property
damage, personal injury or death.

– Do not store or use gasoline or other

flammable vapors and liquids in the
vicinity of this or any other appliance.

– WHAT TO DO IF YOU SMELL GAS:

• Do not try to light any appliance.
• Do not touch any electrical switch;

d o n o t u s e a n y p h o n e i n y o u r
building.

• Immediately call your gas supplier

from a neighbor's phone. Follow the
gas supplier's instructions.

• If you cannot reach your gas supplier,

call the fire department.

– I n s t a l l a t i o n a n d s e r v i c e m u s t b e

performed by a qualified installer,
service agency or the gas supplier.

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Summary

Page 2 - FOREWORD; GAS VALVE PIPING

2 These designs comply with the latest version of the American NationalStandard for Gas Water Heaters, Volume III, ANSI Z21.10.3 / CSA 4.3 M 98as an automatic circulating tank water heater, and automatic storage waterheaters. Detailed installation diagrams are found in this manual. These diagrams wi...

Page 3 - DANGER; FEATURES; IMPORTANT; TABLE OF CONTENTS; PAGE

3 DANGER THIS WATER HEATER IS EQUIPPED WITH AN ADJUSTABLE THERMOSTATTO CONTROL WATER TEMPERATURE. HOT WATER TEMPERATURESREQUIRED FOR AUTOMATIC DISHWASHER AND LAUNDRY USE CANCAUSE SCALD BURNS RESULTING IN SERIOUS PERSONAL INJURY AND/OR DEATH. THE TEMPERATURE AT WHICH INJURY OCCURS VARIESWITH THE PERS...

Page 4 - DISHWASHING MACHINE REQUIREMENT; INSTALLATION INSTRUCTIONS; REQUIRED ABILITY

4 that the water temperature be set for the lowest temperature which satisfiesyour hot water needs. This will also provide the most energy efficientoperation of the water heater and minimize scale formation. SETTING THE WATER HEATER TEMPERATURE AT 120°F/49°C WILLREDUCE THE RISK OF SCALDS. Some state...

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