8 Electrical connection
8.6.5 Connect RS485 bus
►
Establish the bus cable connection from the dis-
play to the electrical terminal area of the heat
pump.
►
220 Ω resistor in connector X5 (on display).
Display
X5
Terminal area
X5
RS485 A
Pin 1 or 3
A
RS485 B
Pin 2 or 4
B
GND
Pin 5
GND
⏊
8.7 Connect electronic module D1
i
Note on terminal designations in the electronic
module:
O
or
o
stands for
output
,
I
or
i
stands
for
input
.
►
Loosen 4 screws and remove the module cover.
8.7.1 Terminal assignment - overview
i
You can find detailed information about the
connection of the individual components on
the following pages.
Abb. 2-42: Electronic module (type
universal module
)
Connection Function
CAN-IN
Bus cable
CAN-OUT Bus cable
X1
Power supply for the electronic module -
230 V AC
X2
230 V AC output (e.g. for further elec-
tronic modules)
i1
Switching contact (input) for heating cir-
cuit
[1]
i2
Temperature sensor tank (buffer tank,
domestic hot water tank)
i3
Flow sensor
i4
Return sensor
For
vamp
air
K 08, K 10
i4
"Return sensor", measurement of the
return temperature by means of flow sen-
sor (Huba Control)
For
vamp
air
K 12, K 15
i5
Digital input for Smart Grid
[1]
i9
Digital input for Smart Grid
[1]
i15
Flow sensor (made by Huba Control) -
measurement of the flow rate
For
vamp
air
K 12, K 15
o1
Primary circuit circulation pump - power
supply
OUT1
Primary circuit circulation pump - control
signal
o2
Three-way ball valve
[1] Only connect potential-free contact.
8.7.2 Connection of the bus cable
!
CAUTION
–
Risk of destruction of the electronic
module or control components if terminals
are incorrectly assigned.
–
Lay the bus cable/sensor cable (low
voltage) and power cable (230 V)
separately.
–
Where a bus cable (with separate earthing
systems) extends over more than one buil-
ding install a CAN bus repeater to gal-
vanically isolate the bus (e.g.
SOLARFOCUS Art. 61610).
!
CAUTION
- Note different versions of the
CAN-IN terminal depending on the type of
electronic module.
–
Type
universal module:
3-pole, A B
⏊
–
Type
heating circuit basic module
and
hea-
ting circuit extension module:
4-pole, + A B
⏊
Installation manual
vampair
33
Содержание Vampair
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