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Why is my Navien NPE-210A Water Heater not hot enough?
If the water from your Navien Water Heater isn't hot enough, first check the temperature setting on the unit itself. It may be set too low. Also, check for cross-plumbing between the cold and hot water lines.
Why is the water from my Navien Water Heater not hot enough?
If the water from your Navien Water Heater isn't hot enough, first check the water heater's temperature setting. Also, check for cross plumbing between the cold and hot water lines.
General| Type | Tankless |
|---|---|
| Fuel Type | Natural Gas or Propane |
| Energy Factor | 0.97 |
| Venting | PVC, CPVC |
| Water Connection Size | 3/4" NPT |
| Gas Connection Size | 3/4" NPT |
| Voltage | 120V |
| Temperature Range | 98°F - 140°F |
| Ignition Type | Electronic |
| Warranty | 15 years heat exchanger, 5 years parts |
| Energy Efficiency | Condensing |
Lists components found in the water heater box.
Lists optional accessories available for the water heater.
Details technical specifications for different models, including heat capacity and flow rate.
Explains the functions of the front panel buttons and displays.
Shows a diagram of the water heater's key internal components.
Provides diagrams and measurements of the water heater, including supply connections.
Explains the information on the water heater's rating plate and its importance.
Guides on selecting an appropriate installation location, considering clearances, utilities, and drainage.
Instructions on how to properly mount the water heater to a wall, including safety precautions.
Provides guidelines and safety warnings for connecting the gas supply to the water heater.
Tables showing gas pipe sizing based on length and capacity for natural gas.
Explains how to measure inlet gas pressure and the necessary precautions.
Details the process of connecting the water supply, including guidelines and filter cleaning.
Guidelines for using the water heater in a combi system for both water and space heating.
Explains how to select internal or external recirculation modes for "A" models.
Instructions for connecting an external pump's wiring to the water heater's PCB.
Details the installation of an approved pressure relief valve, including safety warnings.
Explains how to connect the condensate drain, including disposal options and precautions.
Information on the condensate neutralizer kit and its installation.
Covers the critical aspects of venting, including safety warnings and requirements for Category IV appliances.
Discusses direct venting and provides clearance requirements based on installation type and location.
Lists approved vent pipe materials for USA and Canada, with specific cautions.
Provides tables and guidelines for calculating maximum vent lengths based on pipe size and elbows.
Describes approved vent termination kits and components for PVC and polypropylene materials.
Covers electrical connection requirements, safety, and grounding.
Explains the purpose and location of DIP switches for configuring the water heater's functions.
Details the DIP switches on the circuit board that configure model settings.
Explains how to set DIP switches on the front panel for various configurations like recirculation, altitude, etc.
Provides options for plumbing cascade systems, including internal pump recirculation.
Discusses pipe diameters and flow rates for cascade systems to prevent erosion.
Explains how to connect Ready-Link communication cables between units in a cascade system.
Details the steps to configure communication settings, setting master and slave units.
Introduces the common vent system and its benefits for multiple NPE units.
Provides crucial guidelines for safe and correct installation of a common vent system.
Explains how to calculate the required common vent length based on total BTU/H rating and system layout.
Details the Navien backflow damper, its function, and installation requirements for common vent systems.
Guides on assembling the backflow damper onto the water heater units.
Step-by-step instructions for assembling the backflow damper.
Instructions for connecting vent pipes to the backflow damper, including safety warnings.
Details how to assemble the T joint for connecting branch pipes to the common vent system.
Explains how to connect vent pipes to the main trunk and install system terminations.
Instructions on connecting main trunk pipes to the tee joints in the common vent system.
Describes how to fit end caps, elbows, or tees at the open ends of vent piping.
Provides examples and instructions for installing a condensate drain hose for the common vent system.
Guides on setting DIP switches for common vent operation, including altitude settings.
Specifies clearances for direct vent applications, both vertical and horizontal installations.
Illustrates and describes clearances for vertical direct vent termination.
Shows how intake and exhaust vents can be routed to different locations.
Illustrates and describes clearances for horizontal direct vent termination.
Provides detailed clearance requirements for direct vent terminations in US and Canada.
Instructions for periodic maintenance of the backflow damper, including checking the damper condition.
Basic instructions on how to power the water heater on and off using the power button.
Guides on how to adjust the water temperature, including safety warnings about scalding.
Explains how to enable Commercial Mode for higher temperature settings and its implications.
How to access and view basic information like flow rate and temperatures on the display.
Steps to set the water heater's operation mode (e.g., 1-stage MIN, 2-stage MAX).
Instructions for accessing and modifying special parameters, with strong warnings for professionals.
Sets the time for the pump exercise function to prevent hot water stagnation.
Sets the burner delay time for air handler applications to optimize operation.
Sets the post-purge time after a combustion cycle.
Explains how Outdoor Reset Control adjusts heating temperature based on outdoor conditions.
Sets the duration for preheating operation or on-demand operation.
Sets the heat offset value for cascade units when operating.
Sets the initial number of units for cascade operation.
Instructions on how to reset the water heater to resolve error messages.
Provides detailed instructions and safety warnings for converting the water heater from Natural Gas to Propane Gas.
Presents pressure drop curves for different models of the water heater as a function of water flow rate.
Displays flow rate charts for various water heater models showing flow vs. temperature rise.
Shows the electrical wiring diagram for the NPE-180A/210A/240A models, including color codes.
Presents the ladder diagram for the NPE-180A/210A/240A models, illustrating control logic.
Introduces component assembly diagrams and lists the part numbers for various components.
Shows an exploded view of the water heater's case assembly with numbered parts.
Displays an exploded view of the burner assembly for specific NPE models.
Shows an exploded view of the burner assembly for different NPE models.
Provides an exploded view of the waterway assembly for specific NPE models.
Displays an exploded view of the waterway assembly for different NPE models.
Shows exploded views of the fan (gas) assembly for various NPE models.
A comprehensive checklist to ensure all installation steps and requirements have been met.
Describes the H2Air controller for combination heating and DHW applications.
Explains the HotButton kit for efficient DHW recirculation based on actual demand.
Lists specific installation requirements for Massachusetts, including CO detectors and signage.
