Related Manuals for A.O. Smith Cyclone Xi
Summary of Contents for A.O. Smith Cyclone Xi
- Page 1 Service Handbook Cyclone Xi Commercial Gas High Efficiency Water Heaters M O D E L S C O V E R E D BTH 120 thru 500 Models Series 100 and 101 Part No. 316586-000 • Printed in the U.S.A. • 0509...
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Page 2: Table Of Contents
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK Table of Contents INTRODUCTION..............2 CONTROLS – GAS VALVE BTH 120.........27 QUALIFICATIONS..............2 CONTROLS – GAS VALVE BTH 150.........27 TOOLS REQUIRED..............3 CONTROLS – GAS VALVE BTH 199 and 250....28 GENERAL INFORMATION...........4 ADJUSTMENT PROCEDURE:...........28... -
Page 3: Introduction
A.O. Smith inclusive. If you are experiencing a problem Cyclone Xi BTH commercial water heaters in not covered in this handbook, please contact the field. No duplication or reproduction of A.O. -
Page 4: Tools Required
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK TOOLS REQUIRED ELECTRICAL MULTIMETER CAPABLE OF MEASURING CONTINUITY/ OHMS, AC ● & DC VOLTS, AMPERES, MICROAMPERES, MILLIVOLTS, and FREQUENCY(Hz) UEi Model DL289 or equivalent ○ DIGITAL MANOMETER + 60” W. C. in .01” increments ●... -
Page 5: General Information
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK GENERAL INFORMATION INSTALLATION REQUIREMENTS FOR THE equipment is installed in a crawl space or an attic, COMMONWEALTH OF MASSACHUSETTS the hard wired carbon monoxide detector with alarm For all side wall terminated, horizontally vented... -
Page 6: Installation Quick Tips - Bth 120 And 150 Gas Pressure
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK INSTALLATION QUICK TIPS – BTH 120 and 150 GAS PRESSURE ADJUSTMENT PROCEDURE: a. Attach a pressure gauge (manometer) to the GAS PRESSURE manifold pressure tap and refer to page 4 for correct pressure. -
Page 7: Installation Quick Tips - Bth 199 And 250 Gas Pressure
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK INSTALLATION QUICK TIPS - BTH 199 AND 250 GAS PRESSURE ADJUSTMENT PROCEDURE: HIGH ALTITUDE INSTALLATION GAS PRESSURE The BTH 199 and 250 models are suitable for installation up to 10,100 feet above sea BTH 199 AND 250 MODELS level with no adjustments. -
Page 8: Installation Quick Tips - Bth 300,400,500 Gas Pressure
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK INSTALLATION QUICK TIPS - BTH 300,400,500 GAS PRESSURE ADJUSTMENT PROCEDURE: HIGH ALTITUDE ADJUSTMENT GAS PRESSURE BTH 300,400,500 BTH 300,400,500 For high altitude adjustments, contact the help line on the front of the water heater or contact help@hotwater.com... -
Page 9: Installation Quick Tips - Bth 300,400,500
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK INSTALLATION QUICK TIPS - BTH 300,400,500 A.O. Smith – Technical Training Department Ashland City, Tennessee © 2009 316586-000 Servicing should only be performed by a Qualified Service Agent... -
Page 10: Installation - Venting Category And Materials
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK INSTALLATION – VENTING CATEGORY AND MATERIALS CYCLONE VENTING Category IV • Positive pressure in vent, above atmospheric. • These models will produce excessive condensate in vent. • Vent system must not be combined with any other appliances. -
Page 11: Venting Tables Bth 120 - 250
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK VENTING TABLES BTH 120 – 250 Maximum equivalent feet of intake and vent pipe using 3” PVC is 50 feet (15.2m). Equivalent feet must include any 90° elbows (two 45° elbows equal one 90° elbow). Three inch diameter 90° elbows are equivalent to 5' (1.5m) of pipe. -
Page 12: Concentric Venting
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK CONCENTRIC VENTING Concentric venting allows for a single wall penetration. For multiple water heater installation using this vent practice the any additional vents of this type may be located 12” on centerline to either side of the first vent or 12”... -
Page 13: Vent Condensation
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK VENT CONDENSATION Failure to properly install the drain line on the BTH condensate. condensate elbow will result in a water heater shut down and a “blocked exhaust” fault message. -
Page 14: Venting - All Models - Single Pipe Power Vent - Using Room Air
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK VENTING - ALL MODELS – SINGLE PIPE POWER VENT – USING ROOM AIR A.O. Smith – Technical Training Department Ashland City, Tennessee © 2009 316586-000 Servicing should only be performed by a Qualified Service Agent... -
Page 15: Venting - All Models - Two Pipe Direct Vent - Using Outside Air
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK VENTING – ALL MODELS – TWO PIPE DIRECT VENT – USING OUTSIDE AIR A.O. Smith – Technical Training Department Ashland City, Tennessee © 2009 316586-000 Servicing should only be performed by a Qualified Service Agent... -
Page 16: Vent Termination - Direct Vent - All Models
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK VENT TERMINATION – DIRECT VENT – ALL MODELS WHEN LOCATING THE TERMINALS ON A SIDEWALL, THE FOLLOWING SPECIFICATIONS PERTAINING TO TERMINAL LOCATION MUST BE FOLLOWED. 1. The intake vent terminal and the exhaust vent terminal must terminate on the same exterior wall and must be located at a minimum of 24"... -
Page 17: Direct Venting - All Models
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK DIRECT VENTING – ALL MODELS The air intake provided on the unit contains a mesh screen to prevent large particles from entering the unit. WHEN THE UNIT IS TO BE SET UP AS A DIRECT VENT, THE BALANCE PLATE AND MESH SCREEN MUST BE REMOVED BEFORE GLUING PIPE TO THE CONNECTOR. -
Page 18: Control Overview
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK CONTROL OVERVIEW Interaction with the water heater controller is through The table of status icons describes graphically an LCD display called the Universal Interface operational details of the water heater. Below is a Module (UIM).This screen is also referred to as the... -
Page 19: Adjusting Tank Temperature - Operating Set Point - Differential
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK ADJUSTING TANK TEMPERATURE – OPERATING SET POINT - DIFFERENTIAL ACTION: Press Change then use the UP and DOWN buttons to The Operating Set Point of this water heater determines the regulated temperature for the water in change the temperature Set Point. -
Page 20: Changing The Display Units
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK CHANGING THE DISPLAY UNITS The desktop menu has the option of selecting ACTION: between degrees Fahrenheit and degrees Celsius for Press Update to accept the change or Cancel to temperature displays. -
Page 21: Fault And Warning Conditions - Advanced Diagnostic Information
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK FAULT AND WARNING CONDITIONS – ADVANCED DIAGNOSTIC INFORMATION This water heater control has the ability to monitor Faults: This is a safety related condition that has been almost all aspects of the water heater's operation. In detected by the heater. -
Page 22: Access To The Current Fault Or Warning
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK ACCESS TO THE CURRENT FAULT OR WARNING When a fault or warning has been detected by the ACTION: control it will automatically be displayed on the screen Press the DOWN button for more information. -
Page 23: Fault Codes
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK FAULT CODES All faults, warnings, and errors are given in plain English text. Some have a Code alpha/numeric value assigned. Please read the full English text and not the alpha/numeric value when calling for assistance. -
Page 24: Viewing The Fault History - Viewing Information About The Heater
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK VIEWING THE FAULT HISTORY - VIEWING INFORMATION ABOUT THE HEATER The controller for this water heater will store a history Viewing Information About the Water Heater of ten of the last Fault and Warning conditions that occurred. -
Page 25: Control Sequence (Typical All Models)
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK CONTROL SEQUENCE (TYPICAL ALL MODELS) TYPICAL SEQUENCE 10. The combustion blower will run for the duration of the post purge cycle to purge the system of all 1. When the control is powered it should display combustion gases. -
Page 26: Control Sequence Flow Chart
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK CONTROL SEQUENCE FLOW CHART Power on Control displays model, temperature setting and status The control If all checks are If checks are not performs internal passed and there is... -
Page 27: Controls - Central Control Board - Ccb
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK CONTROLS – CENTRAL CONTROL BOARD – CCB The Central Control Board or CCB is contained in the housing shown below. Access to the board and the wiring harness plugs can be... -
Page 28: Controls - Gas Valve Bth 120
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK CONTROLS – GAS VALVE BTH 120 The gas control valve on the BTH 120 has a built in adjustable pressure regulator. The adjustment screw is accessed by removing the cap screw market regulator in the illustration. -
Page 29: Controls - Gas Valve Bth 199 And 250
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK CONTROLS – GAS VALVE BTH 199 and 250 Once the unit is installed and filled with water ADJUSTMENT PROCEDURE: and the inlet pressures confirmed, simply GAS PRESSURE turn the switch "on" and observe operation. -
Page 30: Controls - Gas Valve Bth 199 And 250
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK CONTROLS – GAS VALVE BTH 199 and 250 Pressure readings may be taken on the gas Note: Tubing shown on pressure valve by connecting to the pressure ports on connections is installed for manometer the valve. -
Page 31: Controls - Gas Valve , Orifice Chart- Bth300/400
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK CONTROLS – GAS VALVE , ORIFICE CHART– BTH300/400, The gas control valve has a built in field ORIFICE CHART – BTH 300,400, adjustable pressure regulator. The gas valve... -
Page 32: Controls - Gas Valve , Orifice Chart- Bth 50031
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK CONTROLS – GAS VALVE , ORIFICE CHART– BTH 500 The gas control valve has a built in field adjustable pressure regulator. The regulator ORIFICE CHART – BTH 500 may be adjusted by removing the cap screw marked “regulator”. -
Page 33: Controls - Pressure Switches - All Models
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK CONTROLS – PRESSURE SWITCHES – ALL MODELS All BTH models are provided with four pressure switches. These switches are essential to the BLOCKED OUTLET PROVING SWITCH safe and proper operation of the unit. The... -
Page 34: Controls - Pressure Switches - Bth 120 Through 250
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK CONTROLS – PRESSURE SWITCHES – BTH 120 through 250 BLOCKED OUTLET BLOCKED INLET BLOWER PROVER LOW GAS PRESSURE PRESSURE SWITCH PRESSURE SWITCH PRESSURE SWITCH SWITCH MODEL SWITCH M ODEL... -
Page 35: Controls - Pressure Switches - Bth 300,400,500
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK CONTROLS – PRESSURE SWITCHES – BTH 300,400,500 LOW GAS PRESSURE BLOWER PROVER BLOCKED EXHAUST PRESSURE SWITCH SWITCH PRESSURE SWITCH MODEL PRESSURE M ODEL PRESSURE M ODEL PRESSURE Natural +4.6”WC... -
Page 36: Controls - Connections, Igniter, Flame Sensor, Sight Glass, Powered Anodes
BTH 120 thru 500 SERVICE HANDBOOK CONTROLS – CONNECTIONS, IGNITER, FLAME SENSOR, SIGHT GLASS, POWERED ANODES The connections for the hot surface igniter The new Cyclone Xi commercial water heater and the flame sense rod are shown below. is equipped with powered anodes. These Also shown is the burner sight glass. -
Page 37: Hot Surface Igniter / Flame Sensor / Control Timing
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK HOT SURFACE IGNITER / FLAME SENSOR / CONTROL TIMING HOT SURFACE IGNITER CONTROL TIMING This water is equipped with an electric hot Pre-purge 25 seconds surface igniter. The igniter material is... -
Page 38: Blower Speed Control Bth 199 And 250
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK BLOWER SPEED CONTROL BTH 199 AND 250 The input of the BTH 199 and BTH 250 is Meter black lead is connected to ground (not determined by blower. The input of the water... -
Page 39: Variable Frequency Drive - Bth 400 And 500
BTH 120 thru 500 SERVICE HANDBOOK VARIABLE FREQUENCY DRIVE – BTH 400 and 500 The Cyclone Xi BTH 400 and 500 models have a variable frequency drive (VFD) that controls the rpm of the blower motor. The VFD receives a signal from the central control board that instructs the VFD to transmit the proper frequency to the blower to produce the proper blower speed and proper input. -
Page 40: Variable Frequency Drive - Blower Speed And Pressure Readings
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK VARIABLE FREQUENCY DRIVE - BLOWER SPEED AND PRESSURE READINGS The instructions for the VFD are sent from the CCB to in the form of a DC current. The chart below lists the current readings, the frequency signal displayed by the VFD, and the pressure switch settings needed for the CCB to let the burner operate. -
Page 41: Wiring Diagram - Bth 120 - 300
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK WIRING DIAGRAM – BTH 120 – 300 A.O. Smith – Technical Training Department Ashland City, Tennessee © 2009 316586-000 Servicing should only be performed by a Qualified Service Agent... -
Page 42: Wiring Diagram - Bth 400,500
CYCLONE Xi COMMERCIAL GAS WATER HEATER BTH 120 thru 500 SERVICE HANDBOOK WIRING DIAGRAM – BTH 400,500 A.O. Smith – Technical Training Department Ashland City, Tennessee © 2009 316586-000 Servicing should only be performed by a Qualified Service Agent... - Page 43 COMMERCIAL Visit the “Information Central” link of www.hotwater.com for a listing of available Service Handbooks. For additional information contact: A. O. Smith Water Products Company A Division of A. O. Smith Corporation 500 Tennessee Waltz Parkway Ashland City, TN 37015 1-800-527-1953 www.hotwater.com Part No.