Rating Plate - Navien NHB H Series Installation And Operation Manual

1.6 Rating Plate

The Navien NHB-H boilers come from the factory configured for use with Natural Gas (NG). Before starting
the installation, check the rating plate located on the side of the boiler to ensure that the boiler matches the
gas type, gas pressure, water pressure, and electrical supply available in the installation location. If the boiler
does not match each of these ratings, do not install the boiler. If conversion to Propane Gas is required, the
included gas conversion kit must be used. Refer to "12.1 Gas & High Altitude Conversion" on page 120 for details.
The Propane Gas & High Altitude Conversion Kit is attached to the interior of the boiler cabinet. You
Note
will need to remove the front cover to access the Propane Gas & High Altitude Conversion Kit. If you
need assistance, please call a licensed professional or Navien Technical Support at 1-800-519-8794.
WARNING
To prevent death, serious injury or property damage:
Before starting the installation, check the Rating Plate located on the side of the boiler to ensure that the
boiler matches the gas type, gas pressure, water pressure, and electrical supply available in the installation
location.
If the boiler does not match each of these ratings, do not install the boiler. Using a different gas type will
result in abnormal combustion and malfunction of the boiler.
ONLY a licensed professional should connect the gas supply.
●
ALWAYS leak test the appliance and the gas connections before operating the appliance.
●
This boiler cannot be converted from natural gas to propane without a Navien Propane Gas & High Altitude
●
Conversion Kit. NEVER attempt a field conversion of this boiler without using the Navien Propane Gas &
High Altitude Conversion Kit. Doing so will result in dangerous operating conditions and will void the
warranty.
Navien Inc. is not liable for any property damage, personal injury or death resulting from improper
conversions.
This appliance complies with the requirements of SCAQMD Rule 1146.2 for NOx emissions of 14 ng/J or 20 ppm
at 3% O .
2
About the Boiler 11