5 Vitolig 100
59
Heat exchanger with thermostatic drain valve
The safety heat exchangers are factory
fitted and prevent overheating, if the
circulation is interrupted (e.g. during
power failure). Do not use these for DHW
heating.
Connection (male thread)
R ½"
. . . . . . . . . . . . . . . . . . . .
Minimum connection pressure
2 bar
. . . . . . . . . .
Maximum operating pressure
6 bar
. . . . . . . . . . . .
Minimum temperature regulator
The minimum temperature regulator
switches the heating circuit pump and the
DHW circulation pump on when the
boiler water temperature reaches 60
º
C.
These pumps are switched off when the
temperature falls below this value. This
prevents the temperature falling below
the dew point and condensate being
created.
Wire the minimum temperature regulator
according to the wiring diagram on
page 60. Provide an On/Off switch for
each pump on site.
Wire the connection between the various
devices as permanent installations.
Connection with insulated cable type
H05VVF3G 1.5 mm
2
or NYM3G 1.5 mm
2
.
Use an approved switch providing at
least 3 mm contact separation as mains
isolator S0.
5822241 GB
