Viessmann VITOLIGNO 300-C Installation And Service Instructions Manual page 40

Installation sequence
Making the connections on the heating water side
Overview of connections
Fig. 34
Boiler return
A
Boiler flow
B
Safety assembly connection
C
Safety heat exchanger, DHW drain pipe
D
E Safety heat exchanger, cold water inlet
Connecting the thermally activated safety valve
Connections
Safety heat exchanger, DHW drain
D
pipe
E Safety heat exchanger, cold water
inlet
!
Please note
Exceeding the torque during installation causes
damage to the sensor well.
Do not exceed the max. torque of 30 Nm.
40
Note
A
Route water pipes so that all casing panels are acces-
B
sible and can be removed for maintenance.
C
Connections
Boiler return
A
D
E
Boiler flow
B
C Safety assembly connection
(male thread)
!
Please note
Incorrect installation of thermally activated
R 1/2
safety equipment can lead to injury and material
damage.
R 1/2
■ Any contamination of the system must be
removed prior to installation. Contamination
can accumulate on the valve seat and result in
a fault.
■ Install components in the correct sequence.
See diagram.
The thermally activated safety valve can be
■
installed in any position.
■ The arrow on the valve body indicates the
direction of flow.
■ The outlet is open to the atmosphere and must
not be closed off.
After installation, check that the valve is work-
■
ing correctly.
■ Do not loosen or tighten the nut on the red
operating button on the safety valve.
DN 40
PN 6
DN 40
PN 6
G 1
½