Condensate Drain & Cleaning - Navien CR-180 Installation Manual

I
Condensate Drain & Cleaning:
• A condensate drain tube is included with the Navien water heater. This tube must
be connected to the port at the bottom of the unit (see below) . The end of the
tube should drain to a laundry tub or to a floor drain.
required, any 3A" polyvinyl tubing should suffice;
• Over time, blockage of the siphon by debris may occur; when the condensate
cannot be released, the water heater will go into error and will shut down. When
this occurs, the siphon must be cleaned. To clean, you will need a bucket to
collect any residual water. S ee figures below.
siphon
@YV; �
�
Cb
• Once the cap and clip have been re-inserted, the siphon must be re-filled. S ee
figure below.
rr--=m--;==-"'=-------.--..,.....-.---- �
Disposal of Condensate
0
c-..,.....___,,�-- � Prepare bucket; twist and remove cap; drain,
Open the valve and water will begin to fill in the
siphon.
the valve.
� Open a hot water faucet; examine the open end
of the condensate drain line to ensure no flue
gases are exiting from that pipe.
gases are exiting, immediately stop the unit and
call Navien for additional instructions.
If additional tubing is
clean out siphon and re-insert cap and retaining
clip.
Fill the siphon to the top and then close
If the flue