Viessmann Vitocal 300 AWO-M-AC 301.A, Installation And Service Instructions Manual

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84
Expansion 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.
Set the required parameters during commissioning; see from page 110.
Function components 230 V~
Plug
sXS
Terminals Function Explanation
222.1 Mixer motor control for
external heat source
Signal mixer CLOSED Connection values:
■ Output: 10 W
■ Voltage: 230 V~
■ Max. switching current: 0.2(0.1) A
Connect on site.
222.2 Mixer motor control for
external heat source
Signal mixer OPEN Connection values:
■ Output: 10 W
■ Voltage: 230 V~
■ Max. switching current: 0.2(0.1) A
Connect on site.
Installation sequence
Electrical connections in the heat pump control…
(cont.)
5692 875 GB