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Details KyungDong Boiler product features including continuous hot water and built-in components.
Explanation of the boiler's priority for domestic hot water over space heating.
Description of the sealed-combustion venting process for safety and efficiency.
Highlights of the KDB-GOM series, including heating and hot water capabilities.
Details on the different operating modes and installation types of the boiler.
Diagram showing the construction layout for KDB-251 and 301GOM models.
Diagram showing the construction layout for KDB-161 and 201GOM models.
Schematic illustrating the flow of water for the heating system within the boiler.
Instructions for setting heating water temperature directly via dial.
Instructions for controlling heating based on room temperature settings.
Instructions for using the timer function for heating cycles.
Diagram showing the components and flow for domestic hot water supply.
Diagram illustrating the path of water for the heating system.
Controls for domestic hot water usage in different heating modes.
How domestic hot water temperature is indirectly controlled by heating water temp.
Setting for domestic hot water temperature during heating operation.
Procedure for boiler operation after domestic hot water usage.
Procedures for ignition failure, flame detection, and safety shutdown.
Boiler behavior during power interruptions and air pressure events.
Overheat, low water, and re-ignition safety mechanisms.
Details on the main heat exchanger type, structure, and function.
Specifications for the fan type, motor, and blower dimensions.
Explains the function of the fan assembly in combustion and exhaust.
Specifies the type of circulation pump and its motor details.
Describes the function of the circulation pump in heat transfer.
Identifies the model number and explains the function of the gas control valve.
Describes the function and operating times of the 3-way valve.
Explains the function of the expansion tank in managing water pressure.
Describes the function and reference information for the air pressure switch.
Details the function of the hot water flow switch in detecting flow.
Explains how the high limit sensor detects overheating and shuts down the boiler.
Describes the function of the high limit fuse in overcurrent protection.
Explains the role of the heating temperature sensor in controlling combustion.
Details how the ignition transformer provides high voltage for ignition.
Explains the function of the power transformer in supplying power to the boiler.
Describes the function of the domestic hot water heat exchanger.
Explains the function of the burner assembly in mixing gas and air.
Describes the function of the nozzle holder assembly for gas supply.
List of fault repair codes displayed on the room thermostat.
DIP switch settings for different operating modes and models.
Diagrams showing wiring connections for different pin configurations.
Details on setting the DIP switches on the main controller.
Explains various functions and operational sequences of the main controller.
Important considerations and warnings before starting boiler installation.
Guide to identifying the different components of the boiler unit.
Instructions for installing the water piping system for the boiler.
Guidelines for installing the flue system for exhaust gases.
Instructions for making safe and correct gas piping connections.
Steps for installing the room thermostat, including location and wiring.
Procedures for checking the boiler after installation.
Steps to check for gas and water leaks in the system.
Pre-trial operation checks, including gas type and electrical connections.
Procedures for conducting the initial trial operation of the boiler.
Guidelines for regular maintenance of the boiler.
Section dedicated to diagnosing and resolving boiler issues.
List of items included in the fuel conversion kit.
List of parts and tools needed for fuel conversion.
Step-by-step instructions for converting the boiler's fuel type.
Troubleshooting steps for low water level failure code #02.
Troubleshooting steps for ignition failure code #03.
Troubleshooting steps for pseudo flame failure code #04.
Troubleshooting for heating sensor disconnection failure code #05.
Troubleshooting for heating sensor short circuit failure code #06.
Troubleshooting for abnormal fan RPM failure code #09.
Troubleshooting for air pressure failure code #10.
Troubleshooting for flame failure in combustion code #12.
Troubleshooting for heating flow sensor failure code #13.
Troubleshooting for gas alarm failure code #14.
Troubleshooting for MICOM controller failure code #15.
Troubleshooting for mechanical overheat failure code #16.
Troubleshooting for DIP switch setting error code #17.
Troubleshooting for other miscellaneous failure codes.
Procedure for disassembling and assembling the room thermostat.
Procedure for disassembling and assembling the main controller.
Procedure for disassembling and assembling the modulating gas control valve.
Procedure for disassembling and assembling the fan assembly.
Procedure for disassembling and assembling the circulation pump.
Procedure for disassembling and assembling the expansion tank.
Procedure for disassembling and assembling the air pressure switch.
Procedure for disassembling and assembling the 3-way valve.
Procedure for disassembling and assembling the heating strainer.
Procedure for disassembling and assembling the ignition transformer.
Procedure for disassembling and assembling the electrode assembly.
Procedure for disassembling and assembling the high limit sensor.
Procedure for disassembling and assembling the high limit fuse.
Procedure for disassembling and assembling the hot water flow switch.
Procedure for disassembling and assembling the domestic water heat exchanger.
Procedure for disassembling and assembling the main heat exchanger.
Procedure for disassembling and assembling the power transformer.
Diagrams showing exploded views of boiler components.
Detailed part lists categorized by boiler sections.
General