Viessmann AWT 221.A04, Инструкции по установке и обслуживанию для подрядчиков

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Indoor unit: main PCB (230 V~ components)
Information regarding the connection values
■ The specified output is the recommended connected
load.
■ Total output of all components connected directly to
the heat pump control unit (e.g. pumps, valves, mes-
sage facilities, contactors):
Max. 1000 W
If the total output is < 1000 W, the individual rating of
a component (e.g. pump, valve, message facility,
contactor) can be greater than specified. However,
the breaking capacity of the relevant relay must not
be exceeded.
■ The specified current indicates the max. switching
current of the switching contact. Observe total cur-
rent of 5 A.
Set the required parameters during commissioning:
see page 59 onwards.
Plug
sYA
Terminals Function Explanation
211.2 Secondary pump
■
In systems without a heating water buffer cylinder, no
other heating circuit pump is required (see terminal
212.2).
■
Connect the temperature limiter to restrict the maximum
temperature for underfloor heating systems (if installed)
in series.
Connection values
■
Output: 130 W
■
Voltage: 230 V~
■
Max. switching current: 4(2) A
Secondary pump connected at the factory; the tempera-
ture limiter must be connected on site.
211.5
AC
Cooling control
3-way diverter valves for heating
water buffer cylinder bypass in cool-
ing mode Connection values
■
Max. output: 10 W
■
Voltage: 230 V~
■
Max. switching current: 4(2) A
Connect the 3-way diverter valves for the bypass circuit in
parallel.
Plug
sYS
Terminals Function Explanation
212.2
A1
Heating circuit pump for heating cir-
cuit without mixer A1/HC1
■
This pump is connected in addition to the secondary
pump if a heating water buffer cylinder is installed.
■
Connect the temperature limiter to restrict the maxi-
mum temperature for underfloor heating systems (if
installed) in series.
Connection values
■
Output: 100 W
■
Voltage: 230 V~
■
Max. switching current: 4(2) A
Installation sequence
Electrical connection
(cont.)
5776 028 GB
Installation