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EXPANDING THE SYSTEM ON
EN
MULTIPLE HEATING CIRCUITS
BUS CONNECTION OF CONTROLLERS W.. AND AHC40:
With BUS connection, we can connect the W.. controller and any number of AHC40
controllers. The first or master controller is always the W.. controller, which physically
controls heat sources, while the AHC40 controllers control the heating circuits.
Important: Outdoor and boiler temperature sensors must always be connected to
master controller.
Outdoor
sensor
Heat
source
BUS CONNECTION OF CONTROLLERS W.. AND MWR3:
With BUS connection, we can connect the W.. controller and any number of MWR3
controllers. The first or master controller is always the W.. controller, which physically
controls heat sources, while the MWR3 controllers control the heating circuits.
Important: Outdoor and boiler temperature sensors must always be connected to
master controller.
Outdoor
sensor
Heat
source
92
First
controller
2
GND
3
GND
8
GND
First
controller
2
GND
3
GND
8
GND
Intermediate
controller
Last controller
T1
T2
T3
T4
B
S U
C
O
M
Intermediate
controller
9 10
11
12
T1
T2
T3
T4
B
S U
C
O
M
Last controller
11
12
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