Navien NPE-180A2 Installation Manual page 108

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
●
/ in. or 4 mm Allen Wrench
5
●
32
Combustion Analyzer or Dual Port Manometer
●
Gas Leak Detector
●
Included Items:
Gas Orifice (Table 1)
●
Gas Pressure and Conversion Kit Number Labels
●
NPE-150S2 Orifice Identification
Natural Gas
Gas Type
0 - 5,399 ft
Altitude
Orifice
Factory Installed For High altitude For Propane
Orifice
Φ6.30
Size
NPE-180A2/S2 Orifice Identification
Gas Type Natural Gas
Altitude 0 - 5,399 ft
Orifice
Factory Installed For High altitude For Propane
Orifice
Φ4.50 / Φ6.30
Size
NPE-210A2/S2, 240A2/S2 Orifice Identification
Gas Type Natural Gas
Altitude 0 - 5,399 ft
Orifice
Factory Installed For High altitude For Propane
Orifice
Φ4.80 / Φ7.50
Size
Table 1. Orifice Size
108 Appendixes
Propane Gas
5,400-10,100 ft 0-10,100 ft
Φ6.50 Φ5.10
Propane Gas
5,400-10,100 ft 0-10,100 ft
Φ4.65 / Φ6.50 Φ3.65 / Φ4.95
Propane Gas
5,400-10,100 ft 0-10,100 ft
Φ5.05 / Φ7.75 Φ3.90 / Φ5.65
WARNING
Fire and Explosion Hazard
To prevent serious injury or death:
Be careful not to confuse the PROPANE GAS
●
& HIGH ALTITUDE CONVERSION KIT and
NATURAL GAS HIGH ALTITUDE CONVERSION
KIT. Do NOT use the NATURAL GAS HIGH
ALTITUDE CONVERSION KIT for natural gas
when converting to propane gas.
Make sure that the conversion is completed
●
with the proper orifice. If the installed orifice
does not conform to the specifications in Table
1, incomplete combustion may occur, resulting
in personal injury or property damage.
Procedure:
The procedure below can be applied
Note
to both Propane conversion and High
Altitude conversion. Distinguish the kit
supplied with the water heater before
installing.
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-A2/S2 Series Front cover