Condensate Connection; Gas Connection; Opening The Control Unit Enclosure - Viessmann VITODENS 200-W Installation And Service Instructions Manual

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.

Opening the control unit enclosure

!
Please note
Electronic assemblies can be damaged by elec-
trostatic discharge.
Prior to commencing work, touch earthed
objects such as heating or water pipes, to dis-
charge static loads.
1. Pull the condensate hose far enough out so that no
unnecessary bends are created inside the boiler.
Check the tightness of the siphon connection.
2. Connect the condensate hose with a constant fall
and a pipe vent to the public sewage system or to a
neutralising system.
1. Seal gas shut-off valve
2. Check the gas connection for leaks.
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. nitrides, sulphides) can cause material
damage.
Remove leak detection agent residues after testing.
!
Please note
Excessive test pressure will damage the
boiler and the gas train.
Maximum test pressure 150 mbar (15 kPa). If
a higher pressure is required for tightness
tests, disconnect the boiler and the gas train
from the main supply pipe (undo the fitting).
3. Purge the gas line.
Conversion to alternative gas types:
Service instructions
Installation sequence
into the gas supply pipe.
A
13