D2CND0 D2CND0 D2CND0
D2CND0 D2TND0 D2TND035A4AA
Wall-mounted condensing boiler
ESIE17 - 09 / 2017.11
Servicing manual
16
•
Re-assemble in reverse order.
•
Remove the screw holding the hermetic cabinet with
main heat exchanger (M5 allen) (9).
•
Seperate main heat exchanger by pushing upwards from
the hanger sheet that on the hermetic cabinet (10).
Note:
There must be liquid gasket before plastic union joint
gasket and air vent are mounted.
•
After heat exchanger and burner removal progress is ap
-
plied as burner and heat exchanger can be cleaned.
•
Clean into the heat exchanger by using Fernox or Senti
-
nel’s products which are appropriate for cleaning of heat
exchanger inside.
•
Inspect the heat exchanger from the top and bottom.
Take any foreign object.
•
Use the cleaning tool into the heat exchanger’s pins (19).
•
Apply compressed air from the top and bottom of the heat
exchanger, if possible.
•
Use vacuum cleaner to clean the top of the heat exchang
-
er.
•
Undo the screws of the electrodes from the heat exchang
-
er and take out the electrodes (11).
•
Take out the air vent which locates on the main heat ex
-
changer by using wrench. (12).
•
Undo 2xM6 screw that connects the burner hood to main
heat exchanger by using screw wrench(13).
•
Take out the burner gasket (14) and burner (15).
•
Pushing down the pawls of the condensate sump manual
-
ly from the heat exchanger (16).
•
Remove the plastic union joint by wrench (17).
•
Take out the ntc sensors and limit thermostat by turning
manually (18).
4.5.1 Heat Exchanger Cleaning
4.5.2 Burner Cleaning
Inspect the fiber and the inner side of the burner.
Take any foreign object, if there are any, without damaging
the fiber.A
Clean the burner with a brush. Be careful to not to damage
burner especially the fiber.
Burner gasket must be replaced in every burner
cleaning(opening the burner hood) (14).
NOTICE
4 Part replacement
(11)
(18)
(12)
(13)
(14)
(15)
(16)
(17)
(19)
(9)
(10)
(16)
(16)
Note:
During disassembling the condensate sump from the
heat exchanger, condensate sump clip could be pulled out
with 15 degree (16) angle which corresponds detaching the
pawls from the heat exchanger surface.
After that condensate sump can be pulled down.
Summary of Contents for D2CND028A1AA
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