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General| Brand | Navien |
|---|---|
| Model | NR-210A |
| Category | Water Heater |
| Language | English |
Covers general warranty terms, applicable periods for parts and heat exchangers, and proof of purchase.
Details heat exchanger, parts, labor allowance, and transferability conditions.
Lists conditions that void the warranty, including improper installation and misuse.
Defines manual applicability, access restrictions, and safety information importance.
Explains symbols and notations used for clarity in the manual.
Explains hazard symbols (DANGER, WARNING, CAUTION) and their meanings.
Advises on keeping flammable items away and ensuring proper venting to prevent hazards.
Highlights scalding risks and details procedures for handling gas leaks.
Emphasizes critical safety steps before, during, and after servicing, plus installation code compliance.
Introduces Navien NR and NP series, including "A" models and heat capacities.
Illustrates component layout and provides part numbers for NR-A, NP-A, NR, and NP models.
Provides specifications like Heat Capacity, Dimensions, Venting Type, and Ignition.
Details connection diameters and physical dimensions for NR-A, NP-A, NR, and NP models.
Illustrates system schematics, flow diagrams, and the operational sequence of the water heater.
Explains DIP switch settings and provides wiring diagrams for various models.
Identifies PCB diagnostic points and describes key components like PCB, sensors, and valves.
Lists error codes, their reasons, self-diagnostic actions, and reset methods.
Provides detailed troubleshooting steps for specific error codes like 01E, 03E, 04E, etc.
Guides users through diagnosing issues based on common symptoms like noise or no hot water.
Addresses troubleshooting steps when the circuit breaker trips during operation or installation.
Lists precautions, inspection items, and required tools for annual water heater inspection.
Provides a step-by-step procedure for licensed professionals to check inlet gas pressure.
Details the procedure for adjusting gas-air ratio by licensed professionals using DIP switches and manometers.
Describes how to drain water from the waterway and condensate siphon, and clean the inlet filter.
Provides instructions on how to remove, clean, and reinstall the intake air filter.
Details the procedure for flushing the heat exchanger using a cleaning solution for proper operation and longevity.
Outlines general safety, tools, and disassembly/reassembly precautions for part replacement.
Covers replacement procedures for PCB, Fuse, Transformer, Ignition Transformer, APS, and GPS.
Details replacement of Fan Motor, Flame Rod, Manifold, and Burner.
Covers replacement of Water Adjustment Valve, Flow Sensor, Buffer Tank, Circulation Pump, and Valves.
Details replacement of Bypass Mixing Valve, Condensation Trap, and related parts.
Exploded view diagram and part list for case disassembly of NR/NP models.
Exploded view diagram and part list for burner disassembly of NR/NP models.
Exploded view diagrams for water way disassembly of NR-A, NR, NP-A, and NP models.
Recommends annual servicing for safety and economy, listing inspection and maintenance tasks.
Checklist for recording results of visual inspections and system checks.
Checklist for recording results of maintenance tasks like draining and flushing.
