Vitotronic Connections; Domestic Hot Water Tank; Electrical Connections - Viessmann Vitotronic 300 KW3 Installation Instructions Manual

Electrical connections

Vitotronic Connections

Vitotronic boiler control (view from rear)
Power Pump Module (wall-mounted)
10
50
156 50
Connections for plug-in equipment
Pump
Space Htg.
1. Ensure that main power supply to the
Power Pump Module contains overcurrent
protection with a maximum rating of 15 A.
WARNING
This equipment must be grounded.
Ensure that the following wires are not
interchanged:
"L" and "N"
L: LINE
N: Neutral
G: Ground
Connections for "hard-wired" equipment
Output
120 VAC
Alarm
5
120 VAC, 60 Hz, 1 Ph
Power supply
Provide 15 A overcurrent
protection and disconnect
means
Circulating pump
Heating circuit without
mixing valve
120 VAC, 1 Ph, 3 A max.
Circulating pump for

domestic hot water tank

120 VAC, 1 Ph, 3 A max.
Circulating pump for
domestic hot water
recirculation
120 VAC, 1 Ph, 3 A max.
5 Alarm indicator