To Next PageTo Next Page
Need help?Do you have a question about the Navien NP-240A and is the answer not in the manual?
General| Type | Tankless |
|---|---|
| Fuel Type | Natural Gas/Propane |
| Maximum Flow Rate (GPM) | 11.2 |
| Energy Factor (EF) | 0.97 |
| GPM at 35°F Rise | 11.2 |
| Minimum Activation Flow Rate (GPM) | 0.5 |
| Water Connection Size | 3/4" NPT |
| Gas Connection Size | 3/4" NPT |
| Vent Size | 3" PVC/CPVC |
| Venting | Direct Vent |
| Voltage | 120V |
| Warranty | 15 years (heat exchanger), 5 years (parts) |
Details on warranty duration for heat exchangers and other parts based on usage.
Specific warranty conditions, including heat exchanger, parts, labor, and exclusions.
Defines the manual's scope and provides precautions for its use and accessibility.
Lists and defines technical terms and abbreviations used throughout the manual.
Explains hazard symbols and safety definitions for potential risks.
Safety precautions related to flammable substances near the unit.
Guidelines for safe venting and hot water temperature settings.
Instructions on what to do if a gas leak is detected.
Crucial safety measures before operating or servicing the unit.
Details on NR and NP series, including "A" models and heat capacities.
Diagram and part list for NR-A model components.
Diagram and part list for NP-A model components.
Diagram and part list for NR model components.
Diagram and part list for NP model components.
Comprehensive table of technical specifications for different models.
Diagrams showing connection diameters and physical dimensions for NR-A/NP-A.
Diagrams showing connection diameters and physical dimensions for NR/NP.
Visual representations of system flow, operation, wiring, and component layout.
Detailed information and specifications for major internal components like PCB, sensors, motors, and valves.
Comprehensive list of error codes, their causes, and troubleshooting steps.
Detailed troubleshooting steps for specific error codes (01E, 03E, 07E, etc.).
Guides for diagnosing issues based on observed symptoms like noise or hot water problems.
Lists necessary precautions, items, and tools for conducting an inspection.
Step-by-step guide for checking the unit's inlet gas pressure.
Procedure for calibrating the gas and air mixture for optimal combustion.
Instructions for safely draining water and cleaning the inlet filter.
Steps for removing and cleaning the air intake filter.
Procedure for cleaning the heat exchanger with a solution.
Essential safety precautions and steps before replacing any part.
Step-by-step guide for replacing the Printed Circuit Board (PCB).
Instructions for safely replacing the unit's fuse.
Procedure for replacing the power transformer.
Steps for removing and installing a new fan motor.
Guide for replacing the flame rod assembly.
Procedure for replacing the ignition transformer.
Steps for replacing the Air Pressure Sensor (APS).
Guide for disassembling and replacing the manifold assembly.
Procedure for replacing the main gas valve.
Steps for replacing the Gas Pressure Sensor (GPS).
Guide for removing and installing a new condensation trap.
Procedure for replacing the water adjustment valve.
Steps for removing and installing a new flow sensor.
Guide for replacing the buffer tank in "A" series models.
Procedure for replacing the circulation pump in "A" series models.
Steps for replacing the 3-way valve in "A" series models.
Guide for replacing the 2-way valve in "NP-A" and "NP" series.
Procedure for replacing the bypass mixing valve in "Non-A" series.
Exploded view and part list for case disassembly.
Exploded view and part list for burner disassembly.
Exploded views of water component disassembly for various models.
Checklist of tasks recommended for annual inspection.
Template for recording inspection findings and references.
Template for recording maintenance activities performed.
