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Defines safety symbols (DANGER, WARNING, CAUTION, NOTICE) and their meanings.
Critical safety steps to follow immediately if a gas leak is detected.
Essential safety rules to prevent injury, death, or property damage.
Lists all components found inside the boiler's packaging.
Details the optional accessories available for the boiler.
Provides detailed technical specifications for space heating and general data.
Diagrams and identification of key boiler components.
Shows physical dimensions and supply connection details.
Information on the boiler's rating plate regarding gas type, pressure, etc.
Guidelines for selecting an appropriate installation site for the boiler.
Instructions and procedures for securely mounting the boiler onto a wall.
Detailed steps and guidelines for setting up the space heating system.
Procedures for properly connecting the condensate drain line.
Steps for filling the boiler system with water and purging air.
Instructions for performing a leak test on the installed water system.
General piping concepts and diagrams for various system applications.
Overview of electrical connections and wiring diagrams for different configurations.
Ensuring the gas supply matches the boiler's rating plate specifications.
Reference tables for determining appropriate gas pipe diameters based on capacity.
Procedure for accurately measuring the boiler's inlet gas pressure.
Important guidelines and warnings regarding combustion air quality.
Instructions and requirements for properly venting the boiler and exhaust gases.
Explanation of the Vent Installation Detector's function and purpose.
Guidance on choosing the correct vent type based on installation requirements.
Required clearances for direct vent installations from various building elements.
Required clearances for non-direct vent installations from various building elements.
Recommended vent pipe materials approved for use with the appliance.
Guidelines and calculations for determining maximum allowable vent lengths.
Instructions and options for properly terminating the vent system.
Illustrations of different indoor venting configurations.
Configuration settings for DIP Switch 1 (Operation Status, Model Setting).
Configuration settings for DIP Switch 2 (Gas Type, Altitude, Temp Modes).
Essential safety warnings and guidelines for connecting the power supply.
Steps for properly preparing the boiler for long-term storage.
Various plumbing options and examples for connecting water supplies in cascade systems.
Piping considerations and steps for connecting communication cables in cascade systems.
Overview of the common vent system, its benefits, and installation scope.
Key rules and instructions for ensuring correct common vent system operation.
Required clearances and standards for common vent system installations.
Methodology for calculating the total length of the common vent system.
Details and components of the Navien Common Vent Collar Kit.
Procedures for assembling and starting the common vent system components.
Instructions for connecting and terminating the vent pipes in a common system.
Required clearances for direct venting installations.
Required clearances for indirect venting installations.
Steps for setting up the common vent system and termination clearances.
How to install a condensate drain for the common vent system.
Maintenance procedures for the common vent collar kit's damper.
A checklist to verify all steps for installing the boiler are completed.
Checklist items for pressure relief valve, condensate drain, and venting.
Checklist items for power supply, DIP switch settings, and boiler operation.
Initial startup procedures and safety precautions for first-time operation.
Instructions on how to power the boiler on and off using the power button.
Guide to completing the initial setup wizard for boiler configuration.
How to set and adjust space heating and DHW temperatures.
Procedures for resetting the boiler, accessing menus, and viewing status information.
Configuration of space heating parameters, including temperature and control methods.
How to configure the boiler for indirect domestic hot water operation.
Viewing error logs and miscellaneous system operating data.
Setting display preferences and accessing advanced system menus.
Checking the status of boiler inputs and outputs.
Adjusting critical operational parameters for the boiler system.
Steps for setting up and configuring the boiler in a cascade system.
Setting external connections and running system diagnostic tests.
Setting special operating modes and performing air purge procedures.
Definitions and possible remedies for various boiler error codes.
Instructions for converting the boiler for propane gas and high altitude operation.
Comprehensive electrical wiring diagrams for the boiler and its components.
Ladder logic diagram illustrating the boiler's control system.
Guidelines for installing the outdoor temperature sensor for reset control.
Diagrams illustrating the assembly of various boiler components.
Specific installation requirements mandated for the state of Massachusetts.
Details of the limited warranty, including coverage periods and exclusions.
Procedures for obtaining service and a list of conditions voiding the warranty.
Information required and steps for contacting technical support for service.
Defines safety symbols (DANGER, WARNING, CAUTION, NOTICE) and their meanings.
Critical safety steps to follow immediately if a gas leak is detected.
Essential safety rules to prevent injury, death, or property damage.
Lists all components found inside the boiler's packaging.
Details the optional accessories available for the boiler.
Provides detailed technical specifications for space heating and general data.
Diagrams and identification of key boiler components.
Shows physical dimensions and supply connection details.
Information on the boiler's rating plate regarding gas type, pressure, etc.
Guidelines for selecting an appropriate installation site for the boiler.
Instructions and procedures for securely mounting the boiler onto a wall.
Detailed steps and guidelines for setting up the space heating system.
Procedures for properly connecting the condensate drain line.
Steps for filling the boiler system with water and purging air.
Instructions for performing a leak test on the installed water system.
General piping concepts and diagrams for various system applications.
Overview of electrical connections and wiring diagrams for different configurations.
Ensuring the gas supply matches the boiler's rating plate specifications.
Reference tables for determining appropriate gas pipe diameters based on capacity.
Procedure for accurately measuring the boiler's inlet gas pressure.
Important guidelines and warnings regarding combustion air quality.
Instructions and requirements for properly venting the boiler and exhaust gases.
Explanation of the Vent Installation Detector's function and purpose.
Guidance on choosing the correct vent type based on installation requirements.
Required clearances for direct vent installations from various building elements.
Required clearances for non-direct vent installations from various building elements.
Recommended vent pipe materials approved for use with the appliance.
Guidelines and calculations for determining maximum allowable vent lengths.
Instructions and options for properly terminating the vent system.
Illustrations of different indoor venting configurations.
Configuration settings for DIP Switch 1 (Operation Status, Model Setting).
Configuration settings for DIP Switch 2 (Gas Type, Altitude, Temp Modes).
Essential safety warnings and guidelines for connecting the power supply.
Steps for properly preparing the boiler for long-term storage.
Various plumbing options and examples for connecting water supplies in cascade systems.
Piping considerations and steps for connecting communication cables in cascade systems.
Overview of the common vent system, its benefits, and installation scope.
Key rules and instructions for ensuring correct common vent system operation.
Required clearances and standards for common vent system installations.
Methodology for calculating the total length of the common vent system.
Details and components of the Navien Common Vent Collar Kit.
Procedures for assembling and starting the common vent system components.
Instructions for connecting and terminating the vent pipes in a common system.
Required clearances for direct venting installations.
Required clearances for indirect venting installations.
Steps for setting up the common vent system and termination clearances.
How to install a condensate drain for the common vent system.
Maintenance procedures for the common vent collar kit's damper.
A checklist to verify all steps for installing the boiler are completed.
Checklist items for pressure relief valve, condensate drain, and venting.
Checklist items for power supply, DIP switch settings, and boiler operation.
Initial startup procedures and safety precautions for first-time operation.
Instructions on how to power the boiler on and off using the power button.
Guide to completing the initial setup wizard for boiler configuration.
How to set and adjust space heating and DHW temperatures.
Procedures for resetting the boiler, accessing menus, and viewing status information.
Configuration of space heating parameters, including temperature and control methods.
How to configure the boiler for indirect domestic hot water operation.
Viewing error logs and miscellaneous system operating data.
Setting display preferences and accessing advanced system menus.
Checking the status of boiler inputs and outputs.
Adjusting critical operational parameters for the boiler system.
Steps for setting up and configuring the boiler in a cascade system.
Setting external connections and running system diagnostic tests.
Setting special operating modes and performing air purge procedures.
Definitions and possible remedies for various boiler error codes.
Instructions for converting the boiler for propane gas and high altitude operation.
Comprehensive electrical wiring diagrams for the boiler and its components.
Ladder logic diagram illustrating the boiler's control system.
Guidelines for installing the outdoor temperature sensor for reset control.
Diagrams illustrating the assembly of various boiler components.
Specific installation requirements mandated for the state of Massachusetts.
Details of the limited warranty, including coverage periods and exclusions.
Procedures for obtaining service and a list of conditions voiding the warranty.
Information required and steps for contacting technical support for service.
General| Category | Boiler |
|---|---|
| Type | Condensing |
| Fuel Type | Natural Gas or Propane |
| Efficiency | 95% AFUE |
| Heat Exchanger Material | Stainless Steel |
| Control Type | Digital |
| Brand | Navien |
| Model | NHB |
| Water Connection Size | 3/4" |
| Vent Size | 2" or 3" |
