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Resumen del manual
• 0407 A. O. SMITH WATER PRODUCTS COMPANY VF BOILER SERVICE MANUAL Technical Training Department ©2007 CONTENTS Introduction....................................................................... 2 Qualifications.................................................................... 2 Service Warning................................................................ 2 Tools Required.................................................................. 3 EMC 5000 Modulation Control System........................... 4 UIM - User Interface Module - Overview.......................... 4 UIM - Status Lights............................................................ 6 UIM - Input Buttons........................................................... 7 UIM - Changing Settings.................................................. 8 UIM - Menu Screens.......................................................... 9 Principles of Operation.................................................... 11 VFD and Blower Operation.............................................. 11 Venturi Operation - Gas Train.......................................... 12 Blower Speed Verification - Hall Effect Sensor.............. 13 Config Key - Blower Speed Programming...................... 14 Sequence Of Operation.................................................... 15 START UP PROCEDURE.................................................. 17 Adjusting Manifold Gas.................................................... 19 Poor Combustion - Ignition Problems............................ 20 Manifold Gas Pressure Check......................................... 23 Control Panel Layout........................................................ 24 MCB - Modulation Control Board.................................... 25 PDB - Power Distribution Board...................................... 35 Troubleshooting - Error Messages.................................. 41 Display Is Blank................................................................ 42 Error Message “Display Fail”.......................................... 43 Error Message “No Config Key”...................................... 43 Error Message “Config Key CRC”................................... 44 Error Message “Config Key Part”.................................... 44 Error Message “Low AC Voltage”.................................... 45 Error Message “Low 24 VAC”.......................................... 45 Error Message “Low Water”............................................ 45 Error Message “Low Gas”............................................... 45 Error Message “No Flow”................................................ 46 Error Message “Sequence Err”....................................... 48 Error Message “Ignition Speed”...................................... 48 Error Message “Mtr Spd < Min Spd”................................ 48 Error Message “Blower Prov Stg1”................................. 49 Error Message “Blocked Flue”........................................ 56 Error Message “Flame Stg1............................................. 57 Error Message “Igniter Stg1............................................. 60 Boiler Controls Information............................................. 61 Operating Temperatures.................................................. 67 Bypass Lines..................................................................... 67 Technical Specifications.................................................. 68 Glossary............................................................................ 71 VF BOILER SERVICE MANUAL INTRODUCTION This Service Manual is designed to aid in servicing and troubleshooting A. O. Smith VF boilers. Models VW/VB 500 - 1000 - series 100/101 boilers are covered in this manual. The instructions and illustrations contained in this service manual will provide you with troubleshooting procedures to verify proper operation and diagnose and repair common service problems. Important Service Reminder When performing any troubleshooting step outlined in this service manual always consider the wiring and connectors between components. Perform a close visual inspection of all wiring and connectors to and from a given component before replacement. Ensure wires were stripped before being crimped in a wire connector, ensure wires are crimped tightly in their connectors, ensure connection pins in sockets and plugs are not damaged or worn, ensure plugs and sockets are mating properly and providing good contact. Failure to perform this critical step or failing to perform this step thoroughly often results in needless down time, unnecessary parts replacement, and customer dissatisfaction. Instruction Manual Have a copy of the Instruction Manual that came with the boiler on hand for the model and series number before servicing. Installation information given in this service manual is not a complete installation instruction. Installation information covered in this service manual has a limited focus as it applies...
Otros modelos de este manual:Calentadores de Agua - TC-099 (4.97 mb)
Calentadores de Agua - TC-099 (4.97 mb)
Calentadores de Agua - TC-099 (4.97 mb)