Navien NFC-250/175H, Руководство по установке, Страница: 30 / 151

30 Installing the System Piping
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.
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.
To connect the condensate drain:
1. Connect a drain line to the
1
/
2
in fitting at the
bottom of the boiler.
Use only corrosion-resistant material for the
drain line, such as PVC or CPVC. Do not reduce
the size of this fitting or the drain line to less
than
1
/
2
in.
NPT 1/2”
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.