Appendixes; Gas Conversion - Navien NPE-180A Installation Manual

5. Appendixes

5.1 Gas Conversion

This water heater is configured for Natural Gas from the factory. If
conversion to Propane Gas is required, the conversion kit supplied
with the water heater must be used.
WARNING
This conversion kit shall be installed by a qualified service
agency* in accordance with Navien's instructions and all
applicable codes and requirements of the authority having
jurisdiction. The information in these instructions must be
followed to minimize the risk of fire or explosion or to prevent
property damage, personal injury or death. The qualified
service agency is responsible for the proper installation of
this kit. The installation is not proper and complete until the
operation of the converted appliance is checked as specified in
the manufacturer's instructions supplied with the kit.
* A qualified service agency is any individual, firm, corporation or company
which either in person or through a representative is engaged in and
is responsible for the connection, utilization, repair or servicing of gas
utilization equipment or accessories; who is experienced in such work,
familiar with all precautions required, and has complied with all of the
requirements of the authority having jurisdiction.
In Canada: The conversion shall be carried out in accordance with
the requirements of the provincial authorities having jurisdiction
and in accordance with the requirements of the CAN‐B149.1 and
CAN1‐B149.2 Installation Code.
Tools Required:
Phillips Screwdriver
Flathead Screwdriver
5/32 " or 4mm Allen Wrench
Combustion Analyzer or Dual Port Manometer
Gas Leak Detector
Included Items:
Gas Orifice (refer to below table)
NG
Water
Heater
1STAGE
NPE-180A
Ø4.80
NPE-180S
NPE-210A
Ø6.10
NPE-210S
NPE-240A
Ø6.10
NPE-240S
Table 1. Orifice size
Gas Pressure and Conversion Kit Number Labels
LP
2STAGE 1STAGE 2STAGE
Ø5.95 Ø3.80 Ø4.70
Ø6.30 Ø4.50 Ø4.80
Ø6.30 Ø4.50 Ø4.80
Procedure:
1. Turn off both gas and water supply to the water heater.
2. Using a Phillips hand screwdriver, remove 4 screws (2 from the
top and 2 from the bottom) of the front cover assembly to gain
access to the internal components. See Figure 1 for illustration
of the front cover on the unit.
Figure 1. NPE Series Front cover
Gas Inlet
Pipe
Gas Valve
Figure 2. NPE Series Internal Components
Appendixes 39