Cleaning The Heating Surfaces; Burner Installation; Checking The Condensate Drain And Cleaning The Siphon - Viessmann Vitodens 200-W Series Installation And Service Instructions Manual

Cleaning the heating surfaces

!
Please note
There should be no scratches or other damage
on the heat exchanger surface that comes into
contact with hot gases. This could lead to corro-
sion damage.
Never use brushes to clean the heating sur-
faces.
Brushing can cause existing deposits to get
stuck in the coil gaps.
A
Fig. 28

Burner installation

1. Install the burner and tighten the screws diagonally
with 8.5 Nm torque.
2. Fit the gas supply pipe with a new gasket. Tighten
the fitting with a torque of 15 Nm.

Checking the condensate drain and cleaning the siphon

Multi-boiler system:
Clean the siphon in the flue gas header as well.
A B C
Fig. 29
Commissioning, inspection, maintenance
Note
Discolouration of the heat exchanger surface is a nor-
mal sign of usage. It has no impact on the function and
service life of the heat exchanger.
The use of chemical cleaning agents is not necessary.
1. Use a vacuum cleaner to remove deposits from
heating surfaces of the heat exchanger.
A
2. If required, rinse heating surfaces
3. Check condensate drain and clean siphon. See the
following chapter.
3. Check the gas connections for tightness.
Danger
Escaping gas leads to a risk of explosion.
Check all fittings for gas tightness.
4. Connect the electrical cables/leads to the corre-
sponding components.
1. Remove retaining clip
2. Clean siphon and check that the condensate
C
can drain freely.
3. Fill siphon with water and reassemble.
C
Note
Never twist the supply hose during assembly. Route
the drain hose without any bends and with a con-
stant fall.
A with water.
and pull out insert .
A B
33