Expansion Pcb On Main Pcb (230 V~ Components); Luster Terminals (Alarm And Safety Connections) - Viessmann VITOCAL 242-G Installation And Service Instructions Manual

Installation sequence
Electrical connections
Connecting the temperature limiter, part no. 7151 728,
7151 729 B to mixer extension kit
A
sÖ
B
sÖ
M
C
1~
Fig. 22
A Connect plug sÖ to mixer extension kit
Temperature limiter
B
Heating circuit pump for heating circuit with mixer
C

Expansion PCB on main PCB (230 V~ components)

Do not make any on-site connections.

Luster terminals (alarm and safety connections)

Set the required parameters during commissioning:
see page 43 onwards.
Terminals Function
X3.1 Switched phase
X3.3 Flow switch
X3.4
X3.6 Power-OFF (factory-fitted jumper)
X3.7
G
26
(cont.)
Explanation
Via control unit ON/OFF switch
Note
Observe the total load 1000 W of all connected compo-
nents.
Requires floating N/O contact:
Closed: Heat pump in operation
■
Open: Heat pump shut down
■
Breaking capacity 230 V, 0.15 A
■
Remove jumper when connecting.
Requires floating N/C contact:
Closed: Heat pump in operation
■
Open: Heat pump shut down
■
Breaking capacity 230 V, 0.15 A
■
Remove jumper when connecting.