User Manual

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Building Technologies M-bus System CE1P5361en
HVAC Products 4 Interconnected systems with zone controllers 08.02.2007
4.4.2 Plant example
Example of an interconnected plant with 1 primary controller and 2 zone controllers:
LPB
M-bus
5361Z21e
LPB
M-bus
M-bus
Primary controller RVD230
Plant type 7–2
Zone controller RVD240
Plant type 1–8
Zone controller RVD230
Plant type 1–3
Both the primary controller RVD230 and the 2 zone controllers RVD240 and RVD230
are connected to the control center. The 2 zone controllers send their heat demand
signals to the primary controller. They require no outside sensor.
4.4.3 Functions of the zone controllers
Functions of the zone controllers in an intercon-
nected system
RVD2… RVL47… RVP3… RVA66… RWI65
Heat demand (zone controller is the source)
z z z z z
Locking signals (zone controller is the recipient)
z z z z z
Forced signals (zone controller is the recipient)
z z z z z
Output control
 External locking of DHW heating z*
 External forcing of DHW heating z*
 External space heating control z*
* Prerequisite: At least one RVD2… in the interconnected system sends the load control signals