Promatic WDC Series, Manual

Page: 62 / 176

Service setting manual 62
ENG
EXPANDING THE SYSTEM ON MULTIPLE HEATING CIRCUITS
BUS connection to WDC controllers:
With BUS connection, we can connect any number of PROMATIC WDC controllers. The first
or the master controller physically controls heat sources, while the other (slave) controllers
control only the heating circuits.
Important: Outdoor and boiler temperature sensors must always be connected to
master controller.
BUS connection of controllers WDC and CMP25:
With BUS connection, we can connect the PROMATIC WDC controller and any number of
PROMATIC CMP25 controllers. The first or master controller is always the WDC controller,
which physically controls heat sources, while the CMP25 controllers control the heating cir-
cuits.
Important: Outdoor and boiler temperature sensors must always be connected to
master controller.
Master controller
Slave controller
Slave controller
Master controller
Slave controller
[scheme 360b]
Slave controller
[scheme 360b]
Heat
source
Outdoor
sensor
Heat
source
Outdoor
sensor