Navien NPE-240A2 Installation Manual

75Installing a Common Vent System
Top
Side
Front
Bottom
Side
Back
[Clearance Chart for Common Vent Applications]
Bottom 12” (300 mm)
Back 0.5” (13 mm)
Side 3” (76 mm)
Front 4” (100 mm)
Top 9” (229 mm)
Note
The recommended clearance from the
TOP of the unit is 36” for servicing the
common vent.
Additionally, the recommended
clearance from the FRONT of the unit is
24” for maintaining and servicing.
Clearances Between Multiple Units
Ensure that the installed water heaters satisfy all
installation clearances provided in the manual. It is
essential that there is sufficient clearance space for
the common vent system to work properly.
The water heater units can be mounted either IN-
LINE or BACK TO BACK.
[Navien Modular Configuration with Rack System]
[In-line Setup] [Back to Back Setup]

Navien NPE-240A2 Specifications

General

Type	Tankless
Fuel Type	Natural Gas or Propane
Energy Factor	0.96
Water Connection Size	3/4" NPT
Gas Connection Size	3/4" NPT
Voltage	120 V
Ignition Type	Electronic
Flow Rate	11.2 GPM
Vent Size	2"/3"
Installation Type	Wall Mounted
Venting	Direct Vent
Warranty	15-Year Heat Exchanger, 5-Year Parts, 1-Year Labor
Max Input	199, 900 BTU/h