AIT HSDV 12.1M3, Operating Manual

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Subject to technical amendments without prior notice | 83059300iUK | ait-deutschland GmbH
8 Installing the control panel
1.
4x
2.
4x
3. Make cable connections on the bottom of the con-
trol panel.
1 2 4 3
1 RS485 for connecting the room control unit
RBE (accessory)
2 RJ45 for network cable connection
3 RS485 LIN bus cable connection to the
control board
4 RJ45 connection Modbus cable to Modbus
distributor.
9 Flushing, filling and venting
9.1 Heating water quality
NOTE
● For detailed information refer, among other
things, to the VDI Guidelines 2035 “Ver-
meidung von Schäden in Warmwasserhei-
zanlagen” (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).