Gas Connection; Connecting The Safety Valve And Condensate Drain - Viessmann VITODENS 100-W Installation And Service Instructions Manual

Installation sequence
Mounting the boiler and making connections

Gas connection

A
Fig. 7

Connecting the safety valve and condensate drain

A
Fig. 8
14
(cont.)
1. Connect the gas shut-off valve to connection
2. Check gas connections for tightness.
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 residues of the leak detection agent after
testing.
!
Please note
Excessive test pressure will damage the
boiler and the gas train.
Max. test pressure 150 mbar (15 kPa).
Where higher pressure is required for tight-
ness tests, disconnect the boiler and the gas
train from the main supply pipe (undo the fit-
ting).
3. Purge the gas line.
■ The condensate pipe is connected to the discharge
pipe of the safety valve. The condensate hose sup-
plied meets the temperature requirements that are
part of the CE certification.
■ We recommend connecting the condensate pipe to
the internal domestic waste water system, either
directly or via a tundish.
■ If the condensate pipe is routed outside the building,
use a pipe with min.
7
from frost. Avoid long external pipe runs.
!
Please note
A frozen condensate pipe can result in faults
and damage to the boiler.
Always protect condensate pipes against frost.
■ Observe local building regulations.
Connect condensate pipe
tem with a constant fall and a pipe vent.
Observe local waste water regulations.
Note
Fill the trap with water before commissioning.
A
30 mm and protect the pipe
to the public sewage sys-
A
.