To Next PageTo Next Page
Need help?Do you have a question about the Bosch 520-HN -L and is the answer not in the manual?
Explains warning symbols, importance indicators, and action sequence symbols used in the manual.
Provides fundamental safety guidelines for installation, operation, and maintenance of the appliance.
Warns against combustible materials and flammable vapors near the appliance.
Instructions for power loss and appliance reset procedures.
Precautions regarding hot water discharge and potential property damage.
Highlights dangers of toxic chemicals and improper connections to heating systems.
Lists technical data, capacity, gas, and water connection specifications for the 520 HN model.
Procedures for unpacking the heater and verifying all components are present.
Essential rules and guidelines to ensure safe operation of the water heater.
Provides detailed dimensions of the unit and required installation clearances.
Outlines potential consequences of improper installation and warranty voidance.
Guides on choosing an appropriate location for the heater, considering safety and airflow.
Step-by-step instructions for securely mounting the water heater on walls or other surfaces.
Guidelines for horizontal venting, including specific restrictions and requirements.
Requirements for vertical venting, including pipe diameter, height, and slope.
Details requirements for gas supply piping, connections, and pressure regulators.
Instructions for performing static and operating gas pressure tests.
Procedures for connecting water lines, including shut-off valves and pressure relief valve installation.
Crucial safety warnings and the "What to do if you smell gas" guide.
Step-by-step guide for starting the pilot and main burners.
Procedure to safely switch off the water heater.
How to set the desired water temperature using control knobs.
Explains how the power knob controls burner gas supply and temperature.
Steps for draining the unit, particularly for freeze protection.
Recommended schedule for periodic maintenance to ensure longevity and performance.
Procedures for inspecting, lubricating, and rebuilding the water valve assembly.
Inspecting pilot, main burners, vent assembly, and heat exchanger fins for proper function.
Addressing mineral scale build-up and steps for heat exchanger descaling.
Guide to diagnosing and resolving common operational issues with the water heater.
Steps to diagnose and fix issues where no spark occurs when water flows.
Troubleshooting for scenarios where the pilot ignites but main burners do not.
Diagnosing why the pilot lights but the main burners fail to come on.
Addresses issues where main burners shut off unexpectedly during hot water usage.
Explains causes and solutions for inconsistent hot water temperatures at the tap.
Troubleshooting steps when the hot water temperature is excessively high.
Diagnosing and resolving issues where the hot water temperature is insufficient.
Investigating why burners ignite when there is no hot water flow.
Troubleshooting low hot water pressure and flow rate issues.
Identifying causes of operational noise, potentially related to internal scaling.
Diagnosing burner cleanliness and flame color for proper combustion.
Advice on saving water and proper maintenance to prevent leaks.
Illustrates and identifies the main internal parts of the water heater.
Presents an exploded view of all components with numerical references.
A detailed list of all parts with their corresponding reference numbers.
Outlines what parts and labor are covered by the limited warranty.
Lists items not covered and conditions that void the warranty.
Procedure for submitting a warranty claim, including required documentation and contact information.
General
