Viessmann Vitocal 300-G Installation And Service Instructions For Contractors page 76

Installation sequence
Electrical connections in the heat pump control...
Extension PCB
Information regarding the connection
values
■ The output given is the recommended
connected load.
■ The total output of all components con-
nected directly to the heat pump con-
trol unit (e.g. pumps, valves, message
facilities, contactors) must not exceed
1000 W.
If the total output is < 1000 W, the indi-
vidual output of a component (e.g.
pump, valve, messaging facility, con-
tactor) may be selected larger than
specified. However, the breaking
capacity of the corresponding relay
must not be exceeded.
■ The stated current indicates the max.
switching current of the switching con-
tact (observe the total current of 5 A).
■ Controls for external heat source and
central fault message are unsuitable
for safety LV.
Function components 230 V~
Plug sXS
Terminals Function
222.1 Mixer motor control for
external heat source
Signal mixer CLOSED
222.2 Mixer motor control for
external heat source
Signal mixer OPEN
76
Set the required parameters during com-
missioning; see from page 107.
Explanation
Connection values:
■ Output: 10 W
■ Voltage: 230 V~
■ Max. switching current: 0.2(0.1) A
Connect on site.
Connection values:
■ Output: 10 W
■ Voltage: 230 V~
■ Max. switching current: 0.2(0.1) A
Connect on site.
(cont.)