Condensate Drain Connection; Gas Connection - Viessmann Vitodens 200-W Installation And Service Instructions For Contractors

Flue gas connection
Do not carry out commissioning until the following
conditions are met:
Free passage through the flue gas pipes.
■
Flue system with positive pressure is gas-tight.
■
Apertures for ensuring sufficient combustion air sup-
■
ply are open and cannot be closed off.
Applicable regulations on installing and commission-
■
ing flue systems have been followed.

Condensate drain connection

Fig. 5

Gas connection

A
Fig. 6
Information on operation with LPG
Install an external safety solenoid valve if the boiler is
sited in rooms below ground level.
1. Seal gas shut-off valve
(cont.)
into the gas supply pipe.
A
Danger
Leaking or blocked flue systems or an insuffi-
cient supply of combustion air cause life threat-
ening poisoning due to carbon monoxide in the
flue gas.
Ensure the flue system functions correctly. Aper-
tures for combustion air supply must not be able
to be closed off.
1. Pull the condensate hose far enough out of the
boiler 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.
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 leak detection agent residues 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 alternative gas types:
Service instructions
Installation sequence
11