Installation
24 — English
Servitec 35-120 with Touch controller — 06.07.2016 - Rev. B
6.3.4
Hydraulic connection
6.3.4.1
Degassing line to the system
The device requires two "DC" degassing lines to the system. One degassing line is intended for gas-rich water from the system, and the
other one serves to return the degassed water to the system. Shut-off devices for both degassing lines have been pre-installed at the
device. The connections of the degassing lines must be made within the main flow volume of the overall system.
Device installation in a heating system – Pressure maintenance with diaphragm-type expansion tank
*
Special types up to 90 °C.
1
Diaphragm expansion tank
EC
Expansion line
2
Servitec device
WC Make-up line
3
For optional equipment and accessories see chapter 4.6
"Optional equipment and accessories" on page 17 .
SV
Safety valve
DC
Degassing lines
•
Gas-rich water from the system
•
Degassed water to the system
The degassing lines into the system are to be installed near the connection point of the "EC" expansion line. This ensures stable pressure
conditions. If you operate the device with pressure-dependent water make-up, you must install the system near the diaphragm-type
pressure expansion tank. This ensures that the pressure in the diaphragm-type expansion tank is monitored. In this case, select the
"Magcontrol" operating mode in the controller.
Note!
Ensure the integration in the "V" main flow volume when using switching variants with hydraulic switching points and
return admixtures.
– For switching and make-up variants, see chapter 6.4 "Switching and make-up variants" on page 27 .
