21
ProtecTor
2.55
A new dimension in door screening
Installation and operating manual
6. Hydraulic connection
6.1 Data for connection of the system to the hydraulic net-
work (LPHW)
Only use water as the heating medium! Pay attention to the suitability of
the components on site, such as valves, boilers etc. Use non-corrosive and
non-flammable liquid media as the heating medium.
Only use water as the medium. The limit values below for the medium apply
to operation.
Media limits
Parameter
Unit
Value
pH value (at 20 °C)
7.5 – 9
Conductivity (at 20 °C)
µS/cm
< 700
Oxygen content
mg/l
< 0.1
Total hardness
°dH
1 – 15
Dissolved sulfur
undetectable
Sodium
mg/l
< 100
Iron
mg/l
< 0.1
Manganese
mg/l
< 0.05
Ammonium content
mg/l
< 0.1
Chloride
mg/l
< 100
Sulfate
mg/l
< 50
Nitrite
mg/l
< 50
Nitrate
mg/l
< 50
6.2 Hydraulic connection
Safety instructions
Connection of the hydraulics requires expertise in heating engineering.
Note the following guidelines for integrating the system before starting
work on the unit or on the control:
• maximum temperature of heating medium 120 °C
• maximum temperature of heating medium 40 °C
• maximum operating pressure of copper/aluminium 10 bar
• maximum operating pressure of galvanised steel 16 bar
Only low pressure hot water LPHW is permitted for use as the heating
medium!
The supply and return connections are located as standard on the unit side
in the air flow direction.
Supply
Return
