Indoor Unit: Controller And Sensor Pcb (Lv Connections) - Viessmann Vitocal 200-S Installation And Service Instructions For Contractors

Electrical connection
Terminals Function
X3.8 Type AWB-AC:
■
X3.9 Frost stat and/or contact humidistat
for cooling
or
Jumper
Type AWB:
■
Jumper
X40.L1 Heat pump control unit power supply:
Phase L1
X40.
?
X40.N Neutral conductor terminal
211.2 Secondary pump
211.4
r 3-way diverter valve for "central heat-
M
ing/DHW heating"
In conjunction with the cylinder load-
ing system:
Cylinder loading pump
■
2-way shut-off valve
■
M

Indoor unit: controller and sensor PCB (LV connections)

Set the required parameters during commissioning:
see page 51 onwards.
Sensors
Plug Sensor
F0.1/F0.2 Outside temperature sensor
F0.2/F0.3 Radio clock receiver (accessories)
F4 Buffer temperature sensor
F6 Cylinder temperature sensor, top
(X25.5/X25.6)
F7 Cylinder temperature sensor, bottom
(X25.7/X25.8)
(cont.)
Earth conductor terminal
Explanation
Requires floating N/C contact:
Closed: safety chain has continuity
■
Open: safety chain interrupted; heat pump shut down
■
Breaking capacity 230 V~, 0.15 A
■
Connection:
Connected in series if both safety components are in-
■
stalled
Insert jumper if no safety components are instal-
■
led.
Power supply 230 V~: see page 35 onwards.
Connection values
Max. output: 130 W
■
Voltage: 230 V~
■
Max. control current: 4(2) A
■
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 maxi-
■
mum temperature for underfloor heating systems in
series (see page 27).
Secondary pump is connected at the factory. Connect
the temperature limiter on site.
Connection values
Max. output: 130 W
■
Voltage: 230 V~
■
Max. control current: 4(2) A
■
3-way diverter valve connected at the factory. Connect
cylinder loading pump in parallel on site.
Installation sequence
Type
NTC 10 k
Ω
DCF
NTC 10 k
Ω
NTC 10 k
Ω
NTC 10 k
Ω
31