Appendixes 59
10. Remove the two screws connecting the ignition transformer
to the heat exchanger and then remove the ignition
transformer.
11. Remove the six bolts connecting the mixing chamber and
the heat exchanger, and then remove the mixing chamber,
burner and the chamber brackets.
12. Rinse the internal parts of the heat exchanger by pouring
the water.
Note
●
It is important that electric parts of the boiler are
safe from water.
●
Navien recommends to use a hose.
●
If the water pressure of the hose is too high, water
may splash to other electric parts of the boiler.
Keep the water pressure of the hose as low as it can.
●
If the boiler is installed in high area and you cannot
see the inside of the heat exchanger, use a solid
support and be careful not to fall.
13. As cleaning the heat exchanger is finished, reassemble the
parts.
Note
This boiler requires very little maintenance, however
a qualified technician should inspect the boiler at the
beginning of every heating season and/or when there
is a problem.
