A.O. Smith 200 - User Manual

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.

Summary

ROUGH-IN DIMENSIONS

PRECAUTIONS

GROUNDING INSTRUCTIONS

HIGH ALTITUDE INSTALLATION

FEATURES AND CONTROLS

MULTI-STAGE FIRING AND CONTROL SYSTEM

Details the control system components and multi-stage capability.

INSTALLATION INSTRUCTIONS

LOCATION

SAFETY RELIEF VALVES

Details the purpose and requirements for safety relief valves.

INSTALLATION CLEARANCES

VENTING

STANDARD VERTICAL CATEGORY I

Details venting specifications for standard vertical Category I installations.

STANDARD HORIZONTAL CATEGORY III

Outlines venting requirements for standard horizontal Category III installations.

DIRECT VENT VERTICAL CATEGORY I

Covers direct vent installations for Category I appliances in a vertical configuration.

DIRECT VENT HORIZONTAL CATEGORY III

DIRECT VENT APPLICATIONS

SYSTEM INSTALLATION

HYDRONIC INSTALLATION

Lists required equipment and procedures for hydronic space heating installations.

WATER SUPPLY LINE

CONVENTIONAL SPACE HEATING INSTALLATION

Discusses considerations for modern fin type boilers in space heating.

SPACE HEATING APPLICATIONS

HOT WATER SUPPLY BOILER INSTALLATION

WATER LINE CONNECTIONS

TANK PROBE INSTALLATION PROCEDURE

HORIZONTAL TANK CONFIGURATION

VERTICAL TANK CONFIGURATION

GAS CONNECTIONS

PIPE SIZING FOR GAS SUPPLY

NATURAL AND PROPANE GAS ORIFICES

WIRING CONNECTIONS

OPERATION

FILLING AND PURGING FOR HEATING BOILERS

FILLING FOR HOT WATER SUPPLY BOILERS

PURGING OF GAS LINE

INLET AND MANIFOLD GAS PRESSURES

LIGHTING AND OPERATING INSTRUCTIONS

OPERATING INSTRUCTIONS

Step-by-step guide for safely starting and operating the boiler.

CONTROL SYSTEM

MULTI-STAGE FIRING SYSTEM DESCRIPTION

Explains the Central Control Board, Ignition Control Boards, and system staging.

DISPLAY BOARD OPERATING PROCEDURES

Details how to use the DIA-SCAN II Display Board for monitoring and adjustments.

RED FAULT LIGHTS

TEMPERATURE PROBES

OUTLET PROBE FUNCTIONALITY

INLET PROBE FUNCTIONALITY

PROCEDURE FOR SETTING TANK PROBE TEMPERATURE

PROCEDURE FOR SETTING STAGE DIFFERENTIAL

APPLIANCE OPERATING SEQUENCE

PREVENTATIVE MAINTENANCE

MAIN BURNERS INSPECTION

TROUBLESHOOTING

TROUBLESHOOTING IGNITION SYSTEM

NEW BOILER LIMITED WARRANTY

A.O. Smith 200 Specifications

General

Brand	A.O. Smith
Model	200
Category	Boiler
Language	English