Navien NPE-180A2 Installation Manual page 39

2. Place the free end of the drain line into an
appropriate drain.
If you are using a condensate
Note
●
pump, ensure that the pump
allows for up to 2 GPH of drainage
for each water heater in the
system.
If you are not using a condensate
●
pump, ensure that the drain line is
pitched downward at a minimum
slope of
3. Fill the condensate trap inside the water heater
by pouring water through the exhaust vent
on top of the water heater until water flows
through the condensate drain.
NOTICE
To prevent property damage, do not allow
condensate line to freeze or become obstructed
or condensate can flow from the tee.
/ in. per foot.
1
4
3.5.1 Condensate Neutralizer Kit
WARNING
To prevent serious injury or death:
DO NOT allow exhaust flue gases to vent
●
through the neutralizer. Inhalation of
flue gases can result in carbon monoxide
poisoning.
ALWAYS install the neutralizer so its inlet and
●
discharge are closer to the floor than the
condensate drain.
ALWAYS install an overflow bypass connection
●
between the appliance and the neutralizer to
prevent the backflow of condensate into the
appliance.
DO NOT connect more than one appliance to
●
the neutralizer unless if it is rated for use with
multiple units.
If option 'b' is selected for condensate disposal, the
Navien condensate neutralizer kit is recommended.
The condensate from the appliance flows
condensate. An increased pH prevents corrosion
of the installation's drainage system and the public
sewer system.
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.
Installing the Water Heater 39