Service Procedure - Viessmann ECV Series Installation And Service Instructions Manual

Initial Start-up and Service

Service Procedure

S
S
ervice
ervice
S
S
ervice
ervice
Fig. 18
38
1. Shut down heating system
2. Cleaning heat exchanger
1. Deactivate main power and ensure
against accidental reactivation.
2. Disconnect plug.
3. Close gas supply valve.
1. Disconnect power supply to boiler
and all heating related components.
2. Close main gas shut-off valve. Allow
boiler to cool if necessary.
3. Remove top panel, upper front panel
and front access panel.
4. Disconnect vent pipe from fan
assembly.
5. Unscrew and remove box collector
(4 screws).
Remove fan motor assembly and
inspect blower wheel for any
obstructions and/or deformations.
Clean as required.
CAUTION
Do not use water to clean.
6. Disconnect gas line from boiler.
7. Disconnect connection wiring
between gas train and main boiler
control panel.
8. Remove gas burner assembly from
boiler (refer to section entitled Gas
Burner Removal on page 28).
9. Clean fins by brushing diagonally
through sections as shown in the
diagram on the left.
CAUTION
Do not use water to clean cast iron
heat exchanger. Use provided brush
and vacuum cleaner.