1
PRINTED IN U.S.A. 2526 0501
COPPER BOILERS FOR
HYDRONIC HEATING AND
HOT WATER SUPPLY
CAUTION
TEXT PRINTED OR OUTLINED IN RED CONTAINS
INFORMATION RELATIVE TO YOUR SAFETY.
PLEASE READ THOROUGHLY BEFORE INSTALLING
AND USING THIS APPLIANCE.
PART NO. 211257-000 REV. 0
A DIVISION OF A. O. SMITH CORPORATION
EL PASO, TX., MC BEE, SC., RENTON, WA.,
STRATFORD-ONTARIO, VELDHOVEN-THE NETHERLANDS
www.hotwater.com
PLACE THESE INSTRUCTIONS ADJACENT TO BOILER AND
NOTIFY OWNER TO KEEP FOR FUTURE REFERENCE.
• Installation
• Operation
• Maintenance
• Limited Warranty
Instruction Manual
GB/GW MODELS:
1000, 1300, 1500, 1850, 2100, 2500
SERIES 200, 201
WARNING: If the information in this
manual is not followed exactly, a fire or
explosion may result causing property
damage, personal injury or loss of life.
Thank You
for buying this cost
efficient, high recovery unit from
A. O. Smith Water Products Co.
You should thoroughly read and understand this
manual before installation and/or operation of this
boiler. Please pay particular attention to the
important safety and operating instructions as well
as the WARNINGS and CAUTIONS.
CONTENTS PAGE
ROUGH-IN DIMENSIONS/CAPACITIES ............. 2 - 3
FOREWORD ..................................................... 4 - 5
FEATURES/CONTROLS ................................... 5 - 6
INSTALLATION INSTRUCTIONS ................... 6 - 22
VENTING ....................................................... 8 - 14
SYSTEM INSTALLATION ..............................15 - 19
HYDRONIC INSTALLATION ..........................15 - 17
HOT WATER SUPPLY INSTALLATION .........17 - 19
GAS CONNECTIONS ....................................20 - 21
OPERATION ................................................ 22 - 23
LIGHTING AND OPERATING .........................24 - 25
CONTROL SYSTEM .................................... 26 - 31
PREVENTATIVE MAINTENANCE ................ 31 - 33
TROUBLE SHOOTING ..................................33 - 34
LIMITED WARRANTY .......................................... 35
WIRING DIAGRAM/SCHEMATIC .................. 36 - 37
•
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:
• Extinguish any open flame.
• Do not try to light any appliance.
• Do not touch any electrical switch; do
not use any phone in your 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.
•
Installation and service must be
performed by a qualified installer,
service agency or the gas supplier.
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