27
Installing the System Piping
Maintenance
Periodically monitor the level of media in the
neutralizer and test the pH level at the outlet. We
recommend an annual pH test using recognized
test strips or an electronic pH meter to obtain
precise measurements. Replace the neutralizing
media when the pH drops below the minimum
level required by the local water authority. If the pH
level is not specified, replace the neutralizing media
when the pH is below 6.0. For replacement media,
contact your local Navien distributor.
As part of this annual maintenance procedure, make
sure to clean out the condensate trap which may
contain excess debris. Drain the condensate within
the trap, then replace with fresh water using the
provided access port.
3.3.1 Condensate Neutralizer Kit
WARNING
●
To avoid damaging the appliance, the
neutralizer inlet and discharge must be lower
than the condensate drain.
●
Do NOT allow exhaust flue gases to vent
through the neutralizer. Leakage can cause
injury or death from carbon monoxide.
●
The connection between the appliance
and the neutralizer must be installed to
prevent the backflow of condensate into the
appliance.
●
Make sure to use a proper neutralizer based
on the boiler input rating and/or the rate of
condensate produced by the appliance.
If option ‘b’ is selected for condensate disposal, the
Navien condensate neutralizer kit is recommended.
The condensate from the appliance flows through
the neutralizing media and increases the pH of the
condensate. An increased pH prevents corrosion
of the installation’s drainage system and the public
sewer system.
2. Place the free end of the drain line into an
appropriate drain.
●
If you are using a condensate pump, ensure
that the pump allows for up to 2 GPH of
drainage for each boiler in the system.
●
If you are not using a condensate pump,
ensure that the drain line is pitched
downward at a minimum slope of
1
/
4
in per
foot.
3. Fill the condensate trap by pouring water into
the boiler’s exhaust vent until water flows
through the condensate drain.
CAUTION
The condensate line must remain unobstructed,
allowing for the free flow of condensate. If
condensate freezes in the line, or if the line is
obstructed in any other manner, condensate
can exit from the tee, resulting in potential
water damage.
Summary of Contents for NCB-190/060H
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