Internal Unit: Expansion Pcb On Main Pcb (230 V~ Components); Internal Unit: Luster Terminals (Signal And Safety Connections) - Viessmann VITOCAL 222-S Installation And Service Instructions Manual

Installation sequence
Electrical connection

Internal unit: Expansion PCB on main PCB (230 V~ components)

Make no on-site connections.

Internal unit: Luster terminals (signal and safety connections)

Set the required parameters during commissioning:
See from page 58.
Terminals Function
X3.1 Switched phase
X3.3 Flow switch
X3.4
X3.6 Power-OFF (factory-fitted jumper)
X3.7
G
36
(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.
Note
No parameters need to be set
■
The compressor is "forced" off as soon as the contact
■
opens.
The power-OFF contact signal switches off the supply
■
voltage to the relevant function components, subject
to power supply utility.
For the instantaneous heating water heater, the
■
stages to be switched off can be selected (parameter
"Output for Instant.htg wtr heater at power-OFF
790A").
The power supply for the heat pump control unit
■
(3 x 1.5 mm 2 ) and the cable for the power-OFF signal
can be combined in a single 5-core cable.
Further information on power-OFF: See chapter
■
"Power supply".
In connection with Smart Grid:
Do not connect the power-OFF signal.
Do not remove jumper.