Viessmann Vitocal 300-G BW, Installation And Service Instructions Manual

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Room temperature sensor for separate cooling circuit
Equipment Connection Comments
ID
Setting parameters (group)
Room temperature
sensor for separate
cooling circuit See the following
illustration Sensor type: Ni 500
No parameters need to be set
3x1.6
F16
A
9
13a
3x2.6
B
A Terminals on PCB 3
B Room temperature sensor
(part no. 7408 012)
Central fault message
Equipment Connection Comments
ID
Setting parameters (group)
Central fault mes-
sage See the following
illustration Zero volt contact, opened during fault-
free operation; never use this contact
for voltages < 42V
No parameters need to be set
2x7.12
L1
AC 230V
0.5A
N
2x7.13
A
A Terminals on PCB 2
Breaking capacity: 230 V~; 4(2) A
Note
The contact issues a short pulse when
the power supply is switched on.
Observe the pulse when processing the
message via communication tools.
Fitting the front top panel
When all electrical connections have been made in the upper wiring area, fit the front
top panel as cover.
Installation sequence
Connection of electrical components
(cont.)
5368 522 UAE