Setting Up The Common Vent System; Common Vent Termination Clearances - Navien NPE-180A2 Installation Manual

6.6 Setting up the Common Vent
System
WARNING
Electric Shock Hazard
To prevent serious injury or death:
ALWAYS disconnect power before servicing.
●
NEVER turn power on until the electrical
●
wiring installation is complete.
NEVER remove front cover unless power to
●
unit is turned off or disconnected.
Setting up for a Cascade System
1. Press and hold the Menu button (
Back button ( ) simultaneously for 3 seconds
on the front panel to access the Service/Installer
menu.
2. Select 2. Cascade Status and Set > 5. Cascade
Vent Setting by pressing the OK button (
and set up the common vent system for a
cascade system.
Function Menu
Cascade 2. Cascade Status and Set
Unit Vent 2.5. Cascade Vent setting
86 Installing a Common Vent System
6.7 Common Vent Termination
Clearances
6.7.1 Direct Vent Application – Vertical
Installation
(30.48 cm)
) and the
Note
)
6.7.2 Venting Intake and Exhaust to
Description
Different Locations
Common Vent
Individual Vent
Intake
12"
min.
End
Cap
Unit 1 Unit 2
For more information about the
installation of the flue, refer to "3.6.6
Terminating the Vent" on page 54.
End
Cap
Unit 1 Unit 2 Unit 12
36" (91cm) min.
Exhaust
12"
(30.48 cm)
min.
Unit 12
Drain
Exhaust
Intake
Drain