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Important installation notice for Massachusetts, detailing required codes and detector installations.
Lists all items included in the boiler packaging, requiring verification before installation.
Details optional accessories available for purchase to enhance boiler functionality.
Lists technical specifications including heating capacity, input ratings, and water pressure.
Identifies and illustrates key internal and external components of the boiler.
Provides detailed physical dimensions and supply connection sizes for the boiler.
Explains the information found on the boiler's rating plate, including gas type and pressure.
Step-by-step guide to remove the boiler from its shipping pallet and brackets.
Guidelines for selecting an appropriate installation location considering clearances and utilities.
Specifies required clearances from walls and other objects for safe boiler installation.
Instructions for securely mounting the boiler onto a wall using the provided bracket.
Detailed steps and guidelines for installing the space heating system.
Key guidelines for a safe and proper space heating installation, including freeze protection.
Critical components and considerations like air vents and oxygen elimination for heating systems.
Procedures for installing the domestic hot water system for on-demand heating.
Essential guidelines for installing the DHW system, addressing scald hazards and water quality.
Instructions on how to properly connect the condensate drain line to the boiler.
Details on installing and using the condensate neutralizer kit to manage pH levels.
Steps for properly filling the boiler system with water and purging air.
Procedures for performing a fill test to ensure system integrity and water chemistry.
Important factors and guidelines for various system application types.
How temperature control devices and mixing valves interface with the boiler.
Illustrative examples of common system configurations like zone and air handler systems.
Example of a zone system using pumps with primary/secondary piping configuration.
Example of installing the boiler system with an air handler unit.
Configuration for the Combi Pre-Heat mode to ensure quick hot water supply.
Details on setting up external DHW recirculation using the NaviCirc system.
External recirculation setup using HotButton and NaviCirc for enhanced hot water delivery.
Setup for external recirculation with a dedicated return line, offering various control modes.
External recirculation configuration with HotButton and Aquastat options.
Illustrates various electrical connection examples for system components.
Guide on how to safely access the boiler's internal terminal strips for wiring.
Wiring diagram for connecting an external Low Water Cut Off (LWCO) appliance.
Wiring diagram for a multi-zone heating system utilizing zone pumps.
Wiring diagram for zone pumps and DHW recirculation features.
Wiring diagram illustrating the connection of the Navien SmartZone+ controller.
Wiring diagram for a generic zone system using zone valves.
Wiring diagram for a generic zone system using zone pumps.
Wiring diagram for connecting the boiler system to an air handler.
Wiring diagram for optional supply and return temperature sensors.
Tables for determining appropriate gas pipe sizes based on length and capacity.
Procedure for measuring the boiler's inlet gas pressure for proper operation.
Guidance on selecting the correct vent type for the boiler installation.
Information on approved vent pipe materials and restrictions.
How to measure and calculate vent lengths, considering elbows and pipe size.
Instructions for proper vent termination, including clearances and configurations.
Configuration settings for DIP Switch 1 on the main circuit board.
Configuration settings for DIP Switch 2, including gas type and altitude.
How to connect water supplies for cascade systems with multiple units.
Pipe sizing and flow rate considerations for cascade systems with multiple water heaters.
Example of a cascade system with recirculation, detailing setup for NPE units.
How to connect communication cables for cascade systems using Ready-Link.
Configuration steps for establishing communication in cascade systems.
Overview of the common vent system for multiple Navien units.
Key guidelines and safety precautions for common vent system installation.
Method for determining the common vent system length based on BTU load.
Information on the Navien backflow damper, its function, and maintenance.
Steps to begin the common vent system installation, including damper assembly.
Procedure for assembling the backflow damper onto the NFC boiler unit.
How to connect vent pipes to the backflow damper using proper fittings.
Instructions for assembling the vent system's T joint using reducers and cement.
Steps for connecting main pipe runs to the T joint and installing system termination.
Configuration steps for setting up the common vent system type.
Specifies required clearances for common vent termination in various installations.
How to install a condensate drain hose for the common vent system.
Instructions on how to power the boiler on and off using the power button.
Guide to adjusting space heating and domestic hot water temperatures via the control panel.
Navigating basic menu items for viewing status, setting temperatures, and error history.
How to view and interpret boiler error codes for troubleshooting.
Accessing miscellaneous system operational data like operation logs and gas consumption.
Navigating advanced menu options for detailed settings and diagnostics.
Procedures for converting gas type and setting for high altitude installation.
Comprehensive wiring diagrams illustrating connections for various boiler functions.
Explanation of the ladder logic and control flow for the boiler system.
Installation guide and best practices for the outdoor temperature sensor.
How to configure and use the Outdoor Reset Control feature for energy efficiency.
Diagrams and parts lists for boiler components like case, heat exchanger, and combustion parts.
General| Category | Boiler |
|---|---|
| Fuel Type | Natural Gas / Propane |
| Max. Input (NG) | 175, 000 BTU/H |
| Max. Input (LP) | 175, 000 BTU/H |
| DHW Max. Input | 175, 000 BTU/H |
| Output | 150, 000 BTU/hr |
| Efficiency | 95% AFUE |
| Water Connection Size | 3/4" NPT |
| Water Connections | 3/4" NPT |
| Gas Connection Size | 3/4" NPT |
| Gas Connection | 3/4" NPT |
| Weight | 120 lbs |
| Electrical Supply | 120V |
| Vent Type | PVC, CPVC, Polypropylene |
| Vent Size | 2"/3" |
