Technical data

39Installation and maintenance instructions ecoTEC exclusive 0020017768_05
• Only ecoTEC exclusive 832: Insert the cables on the
fan motor and the cable on the gas fitting.
Only ecoTEC exclusive 838: Close the mains coupling
to the fan.
Connect the gas supply (6) with a new gasket to the
gas fitting. Use the spanner flat at the flexible gas line
to hold the gas line.
a
Caution!
Open the gas supply and check the appliance
for gas leaks using a leak testing spray. Pay
particular attention to the gas fitting (6).
Check that the blue gasket in the air intake pipe (1)
is correctly located in the gasket seat.
Insert the air intake pipe on the suction nozzles and
secure the pipe with the retaining screw (3).
8.4 Maintaining the secondary heat exchanger
d
Danger!
All water conducting components present a
danger of burning and scalding. Only carry out
work on these components once they have
cooled down.
a
Caution!
Protect the electronics box turned down
against sprayed water.
h
Note!
When removing the secondary heat exchanger,
protect the opening in the appliance from dirt
contamination!
4
3
2
1
Fig. 8.7 Cleaning the secondary heat exchanger
Isolate the appliance from the house electricity circuit
(see Section 8.3) and close the gas supply.
Close the maintenance cocks -if fitted- and the cold
water inlet valve on the inlet combination, and drain
the appliance.
Release the nut (4) on the secondary heat exchanger.
Release the clamp (1) on the preference changeover
valve.
Release the clamps (2) and (3) on the secondary heat
exchanger.
Remove the secondary heat exchanger to the side.
Flush the secondary heat exchanger thoroughly with
clean water.
When re-assembling, use new O rings and flat seals,
the part numbers can be obtained from the parts
catalogue.
8.5 Cleaning the condense trap
1
Fig. 8.8 Cleaning the condense trap
d
Danger!
If the device is operated with empty condense
trap, there is risk of poisoning through emitting
flue gases.
Therefore, fill the trap with water again after
each cleaning operation.
Unscrew the lower section (1) of the water condense trap.
Clean the bottom of the trap by flushing it out with
water.
Fill the lower section with water until about 10 mm
below the upper edge.
• Fasten the lower section onto the condense trap again.
Inspection and maintenance 8