18
Subject to change without notice | 83059000gUK – Translation of the original operating manual | ait-deutschland GmbH
8.2 Connections of the control panel
1
3
4
2
1 Room control panel RBE RS 485 (accessory)
connection
2 Network cable connection
3 LIN-bus cable connection to the controller
board
4 Modbus cable to Modbus distributor
connection
8.3 Operate the controller via a PC /
network
1. During installation lay a shielded network cable
(category 6) through the unit.
2. Plug the RJ-45 connector of the network cable
into the socket of the control panel (1).
1
NOTE
The network cable can be retrofitted at any
time.
9
Flushing, filling and venting
9.1 Heating water quality
NOTE
●
For detailed information refer, among
other things, to the VDI Guidelines
2035 “Vermeidung von Schäden in
Warmwasserheizanlagen” (preventing
damage in hot water heating systems)
●
Required pH value: 8.2 … 10;
for aluminium materials:
pH value: 8.2 … 8.5
►
Fill the system with deionised heating water
(VE water) or with water corresponding to the VDI
2035 norm only (low-salt operation of the system).
Advantages of low-salt operation:
●
Low corrosion-promoting properties
●
No formation of mineral scale
●
Ideal for closed heating circuits
● Ideal pH value due to self-alkalisation after filling
the system
►
If the required water quality is not achieved, con-
sult a company specialising in the treatment of
heating water.
►
Keep a system log for hot water heating systems
in which relevant planning data is entered (VDI
2035).
9.2
Flush and fill the heating and
domestic hot water charging
circuit
Outlet pipe of the safety valve is connected.
►
Ensure that the set pressure of the safety valve is
not exceeded.
NOTE
The venting program on the controller can
also be used to support the flushing and
venting process. It is possible to control
individual circulation pumps and even the
switching valve through the venting program.
As a result it is not necessary to remove the
valve motor.
1.
Pull the U-clip (2) off the floor of the valve
motor (1).
