Condensate Connection; Gas Connection; Opening The Control Unit Casing - Viessmann Vitodens 200-W Series Installation And Service Instructions Manual

Installation sequence

Condensate connection

Fig. 5

Gas connection

A
Fig. 6
Notes regarding operation with LPG
We recommend the installation of an external safety
solenoid valve when installing the boiler in rooms
below ground level.
1. Seal gas shut-off valve

Opening the control unit casing

!
Please note
Electronic assemblies can be damaged by elec-
trostatic discharge.
Before beginning work, touch earthed objects,
such as heating or water pipes, to discharge
static loads.
12
A into the gas supply pipe.
1. Pull the condensate hose far enough out of the
boiler that no unnecessary bends are created inside
the boiler. Check the tightness of the siphon con-
nection.
2. Connect the condensate hose with a constant fall
and a pipe vent to the public sewage system or to a
neutralising system.
2. Carry out a tightness test.
Note
Only use suitable and approved leak detection
agents (EN 14291) and devices for the tightness
test. Leak detection agents with unsuitable constitu-
ents (e.g. nitrites, sulphides) can cause material
damage.
Remove residues of the leak detection agent after
testing.
!
Please note
Excessive test pressure may damage the
boiler and the gas valve.
Max. test pressure 150 mbar (15 kPa).
Where higher pressure is required for tight-
ness tests, disconnect the boiler and the gas
valves from the gas supply pipe (undo the fit-
ting).
3. Vent the gas line.
Conversion to other gas types:
Service instructions