Viessmann Vitocal 350-A AWHI 351.A14, Инструкция по установке и обслуживанию

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51
Plug sXD
Terminals Function Explanation
223.1
223.2
U
Central fault message Floating contact:
■
Closed: Fault
■
Open: No fault
■
Not suitable for safety LV
Connection values (contact rating):
■
Voltage: 230 V~
■
Max. switching current: 4(2) A
Central fault message
223.1
L1
230V~, 0.5 A
N
223.2
A
Fig. 51
A
Terminals on extension PCB
Plug
sXF
Terminals Function Explanation
224.4
r
2.
Instantaneous heating water heater
switching, stage 2 Connection values:
■
Output: 10 W
■
Voltage: 230 V~
■
Max. switching current: 4(2) A
See installation instructions for "instantaneous heating
water heater" and "instantaneous heating water heater
switching module".
224.6 Connection values:
■
Output: 130 W
■
Voltage: 230 V~
■
Max. switching current: 4(2) A
Connect cylinder loading pump and 2-way shut-off
valve in parallel.
■
Cylinder loading pump (DHW side)
and
M
■
2-way shut-off valve
224.7 Connection values:
■
Output: 100 W
■
Voltage: 230 V~
■
Max. switching current: 4(2) A
■
Circulation pump for DHW reheat-
ing
or
■
Immersion heater switching (for
connection, see drawing in chapter
"Immersion heater")
Installation sequence
Heat pump control unit electrical connections
(cont.)
5692878
Installation