Navien NFB Series Installation & Operation Manual page 26

Installation
The inlet has a center connection port and the outlet has an
●
offset connection.
Install the neutralizer on the wall or the floor and secure it using
●
the brackets supplied with the kit.
If the neutralizer is installed horizontally, rotate the neutralizer to
●
position the outlet at the highest point (Figure 1).
If the neutralizer is mounted vertically, ensure that the outlet is
●
higher than the inlet (Figure 2).
Ensure that the condensate runs freely to the drain.
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Ensure all connections are made to prevent the backflow of
●
condensate. Use corrosion resistant piping and secure all piping
to prevent movement.
Do not install condensate piping in areas where the
Note
temperature drops below freezing point. Protect piping
in high pedestrian areas from damage and vibration.
For increased safety when the condensate drain blocks, install
●
a Y-fitting. Connect the Y-fitting as shown in the installation
diagram and ensure that the condensate runs freely to the drain.
Ensure that the discharge connection is accessible. Access to
●
the discharge connection is required for maintenance and pH
testing.
If there is insufficient gradient for drainage, install a drainage
●
pump designed for boiler and water heater condensate removal.
Figure 1. Horizontal installation
26 Installing the System Piping
Figure 2. Vertical installation