Viessmann VITOCAL 300-G Installation And Service Instructions Manual page 94

Installation sequence
Electrical connections
Room temperature sensor for sepa-
rate cooling circuit (part no. 7408 012)
9
F16 13b
A
A Connection to controller and sensor
PCB
B Room temperature sensor
(Ni 500)
Instantaneous heating water heater (on site)
Connection
Installation instructions
Instantaneous heating water
heater (on site).
Instantaneous heating water heater control and load circuit
L1
L2
L3
N
?
211.3
224.4
B
X2.N
A Instantaneous heating water heater
B Connection to main PCB with exten-
sion and to cross connect PCB
211.3 Stage 1
224.4 Stage 2
94
(cont.)
F16
B
!
?
Note
No parameters need to be set.
A