30
Terminals
Function
Explanation
X3.8
X3.9
■
Type AWB-AC:
Frost stat and/or contact humidistat,
cooling
or
Jumper
■
Type AWB:
Jumper
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.
X40.L1
Heat pump control unit power supply:
Phase L1
X40.
?
Earth conductor connection
X40.N Neutral conductor connection
Power supply 230 V~: See from page 34.
211.2
Secondary pump
Connection values
■
Max. output: 130 W
■
Voltage: 230 V~
■
Max. switching 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 26).
Secondary pump is connected at the factory. Connect
the temperature limiter on site.
211.4
Connection values
■
Max. output: 130 W
■
Voltage: 230 V~
■
Max. switching current: 4(2) A
3-way diverter valve connected at the factory. Connect
cylinder loading pump in parallel on site.
M
r
3-way diverter valve for "Central heat-
ing/DHW heating"
In conjunction with the cylinder load-
ing system:
■
Cylinder loading pump
M
■
2-way shut-off valve
Internal unit: Controller and sensor PCB (LV connections)
Set the required parameters during commissioning:
See from page 50.
Sensors
Plug
Sensor
Type
F0.1/F0.2
Outside temperature sensor
NTC 10 k
Ω
F0.2/F0.3
Radio clock receiver (accessories)
DCF
F4
Buffer temperature sensor
NTC 10 k
Ω
F6
(X25.5/X25.6)
Cylinder temperature sensor, top
NTC 10 k
Ω
F7
(X25.7/X25.8)
Cylinder temperature sensor, bottom
NTC 10 k
Ω
Installation sequence
Electrical connection
(cont.)
5700 542 GB
Installation
