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
When installing the boiler in rooms below ground level
we recommend fitting an external safety solenoid
valve.
1. Seal gas shut-off valve

Opening the control unit enclosure

!
Please note
Electronic assemblies can be damaged by elec-
trostatic discharge.
Prior to commencing any work, touch earthed
objects such as heating or water pipes to dis-
charge static loads.
into the gas supply pipe.
A
1. Pull the condensate hose far enough out so that no
unnecessary bends are created inside the boiler.
Check the tightness of the trap connection.
2. Connect the condensate hose with a constant fall
and a pipe vent to the public sewage system or to
a neutralising system.
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 constit-
uents (e.g. nitrides, sulphides) can cause material
damage.
Remove leak detection agent residues after test-
ing.
!
Please note
Excessive test pressure will damage the
boiler and the gas train.
Max. 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
13