Viessmann VITOCAL 300-G PRO Installation And Service Instructions Manual page 62

Installation sequence
Overview of electrical connections
Plug sXF
Terminals Function
224.4 Control of instantaneous
heating water heater,
stage 2
2.
r
224.6 ■ Cylinder primary pump
(DHW side)
■ 2-way shut-off valve
M
224.7 Circulation pump for DHW
reheating
62
(cont.)
Explanation
Connection values
■ Output: 10 W
■ Voltage: 230 V~
■ Max. switching current: 4(2) A
On-site connection, see separate "con-
nection and wiring diagram" sheet 110
Switch cylinder primary pump and two-
way shut-off valve in parallel
Connection values
■ Output: 130 W
■ Voltage: 230 V~
■ Max. switching current: 4(2) A
On-site connection, see separate "con-
nection and wiring diagram" sheet 150.
Use contactor, if required; see separate
"connection and wiring diagram"
sheet 151, sheet 152.
Connection values
■ Output: 100 W
■ Voltage: 230 V~
■ Max. switching current: 4(2) A
On-site connection, see separate "con-
nection and wiring diagram" sheet 170.
Use contactor, if required; see separate
"connection and wiring diagram"
sheet 171, sheet 172.