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A.O. Smith CYCLONE XHE BTH 300A User Manual

A.O. Smith CYCLONE XHE BTH 300A
32 pages
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1
A DIVISION OF A.O. SMITH CORPORATION
Mc BEE, SOUTH CAROLINA
STRATFORD (ONTARIO) CANADA
www.hotwater.com
PLACE THESE INSTRUCTIONS ADJACENT TO HEATER AND NOTIFY OWNER TO KEEP FOR FUTURE REFERENCE.
PRINTED IN U.S.A. 0903 PART NO. 195792-000
SUPERSEDES PART NO. 195049-000
CYCLONE XHE
®
Model BTH 300A AND 400A
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 PRINTED OR OUTLINED IN RED 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;
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.

Table of Contents

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A.O. Smith CYCLONE XHE BTH 300A Specifications

General IconGeneral
BrandA.O. Smith
ModelCYCLONE XHE BTH 300A
CategoryWater Heater
LanguageEnglish

Summary

Features and Basic Operation

Water Temperature Control

Controls the water temperature of the heater, with safety warnings about scalding.

High Limit Switch (E.C.O.)

Safety device that shuts off the burner if water temperature exceeds a safe limit.

Circulating Pump Operation

Explains the use and installation of circulating pumps with the heater.

Installation Requirements

Required Installer Ability

Specifies the necessary qualifications for installing the water heater.

Heater Location and Clearances

Guidelines for selecting a location and maintaining required clearances.

Air Requirements for Combustion

Details ventilation needs for combustion and air supply in various spaces.

Vent Pipe Termination Guidelines

Explains proper termination locations for exhaust and intake vents.

Venting System Installation

Chemical Vapor Corrosion Warning

Warns about corrosive vapors affecting the vent system and heater.

Horizontal and Direct Venting

Illustrates venting requirements for horizontal and direct installations.

Vertical Vent Terminal Installation

Covers specifications for terminating vent pipes through a roof.

Vent System Installation Planning

Provides guidance on planning and preparing the vent system installation.

Gas Piping and System Connections

Gas Pipe Connection and Purging

Instructions for connecting gas pipe and purging air from the line.

Gas Pressure Regulation and Valves

Specifies gas supply pressure requirements and valve safety.

Relief Valve Function and Checks

Details the importance and function of the temperature and pressure relief valve.

Water Line Connections and Closed Systems

Discusses water line connections and issues with closed systems.

Controls, Electrical, and Operation

Controls and Switches Overview

Explains the function of various safety and operational switches and the igniter.

Prover and Pressure Switches

Details prover switches for air flow and pressure switches for gas.

Hot Surface Igniter Function

Ignites the main burner using high temperature.

Heater Wiring Diagram

Provides diagrams and notes for electrical connections and safety.

Heater Operation Sequence

Step-by-step process of the heater's automatic ignition and heating cycle.

Initial Start-Up and Lighting Procedures

Guides on preparing for, starting, and lighting the water heater.

Diagnostics and Troubleshooting

Self-Diagnostic Controller Features

Explains the controller's self-diagnostic features and error codes.

Fault Conditions and Error Codes

Describes common fault conditions, error codes, and diagnostic indicators.

Temperature Probe and ECO Switch Faults

Addresses issues related to temperature probes and the ECO switch.

Combustion Air Blockage Diagnosis

Diagnoses issues caused by blocked combustion air supply.

Troubleshooting Common Problems

Steps to diagnose and resolve issues like no hot water or gas valve problems.

Burner and Motor Troubleshooting

Addresses problems with burner operation and motor function.

Ignition and Gas Supply Troubleshooting

Diagnosing ignition failures and gas supply issues.

Maintenance and High Altitude

High Altitude Installation Considerations

Information on installations at altitudes above 2000 feet.

Maintenance Schedule and Procedures

General maintenance overview and schedule for the water heater.

Flushing, Draining, and Scale Removal

Procedures for tank flushing, draining, and removing lime scale.

Vent System Inspection

Guidance on inspecting the vent system for obstructions and leaks.

Installation Diagrams and Kits

Installation Diagrams for Plumbing

Visual guides for various plumbing configurations and connections.

Manifold Kits for Multi-Unit Systems

Details on manifold kits for multi-unit installations.

Limited Warranty Information

Tank and Parts Warranty Coverage

Details the warranty coverage for the tank and other components.

Warranty Conditions and Claim Process

Outlines warranty terms, exceptions, and the claim procedure.

Warranty Disclaimers

Legal disclaimers regarding warranty scope and liability.

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