Navien NFC-175 Installation & Operation Manual page 26

3. Attach the clip to the condensate trap.
4. Ensure that the condensate trap is firmly fixed to the bottom
of the boiler.
26 Installing the System Piping
Before connecting the condensate drain, choose one of the
following disposal options:
a
a. From the boiler directly into an external drain.
Do not install a fixed connection for the drain.
Note
b. From the boiler, through a neutralizing agent, and then
into an external drain (refer to "3.3.1 Condensate Neutralizer
Kit" on page 27).
If you choose this option, the neutralizing agent
Note
must be replaced periodically. Depletion of the
neutralizing agent will vary, based on the usage
rate of the boiler. During the first year of operation,
the neutralizer should be checked every few
months for depletion and replaced as needed.
c. From the boiler into a laundry tub.
The bottom of the boiler must be higher than
Note
the top of the laundry tub to use this option. The
condensate line must have a negative slope to
drain properly.
d. From the boiler into a condensate pump, and then into a
laundry tub.
A pump can be used when there is a long distance
Note
between the boiler and the laundry tub or when
the bottom of the boiler is lower than the top of the
laundry tub.
c
b
d