Appendices 63
11. Re
m
ove the rubber packing at the top of the cover and put
a Phillips screwdriver into the hole, and then loosen the
m
iddle bolt located at the back of the burner.
3
2
1
12. Re
m
ove the five bolts connecting the
m
ixing cha
m
ber and
the heat exchanger, and then re
m
ove the
m
ixing cha
m
ber,
burner and the cha
m
ber bracket.
13. Use the brush to dislodge the debris and pour water down
the channels to flush out the debris.
Note
Ɣ
I
t is i
m
portant to keep electric parts of the boiler
safe fro
m
water.
Ɣ
Navien reco
mm
ends to use a hose.
Ɣ
I
f the water pressure of the hose is too high, water
m
ay splash to other electric parts of the boiler.
K
eep the water pressure of the hose as low as it can.
Ɣ
I
f 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.
14. As cleaning the heat exchanger is finished, reasse
m
ble the
parts.
Note
This boiler re
q
uires very little
m
aintenance, however
a
q
ualified technician should inspect the boiler at the
beginning of every heating season and/or when there
is a proble
m
.
Summary of Contents for NCB-24LDWE
Page 65: ...Appendices 65 12 4 Ladder Diagram 3 15A...
Page 69: ...Memo...
Page 70: ...Memo...
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