Reflex Servitec 35 Mode D'emploi Original page 37

Device installation in a heating system – Pressure maintenance with
expansion vessel
1 "SV" safety valve
2 "EC" expansion line
3 "DC" degassing line (degassed water)
4 "DC" degassing lines (gas-rich water)
5 "WC" make-up line
Optional equipment and accessories  4.5 "Optional equipment
6
and accessories",  34.
7 Servitec
8 Expansion vessel
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 expansion vessel. This ensures that
the pressure in the diaphragm-type expansion vessel 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,  6.4 "Switching and make-
up variants",  37.
Installation detail of the "DC" degassing line
Connect the "DC" degassing lines as shown below.
•
Ensure that particulate dirt cannot enter and thus create an overload of the
Servitec's "ST" dirt trap.
•
Connect the degassing line for gas-rich water upstream of the degassing
line for degassed water in system direction of flow.
• The water temperature must be in the range > 0 °C – 90 °C. The return
line side should be preferred for heating systems. This ensures the
permissible temperature range for degassing.
6.3.3.2 Make-up line
For a water make-up via a "BT" mains disconnect receptacle, its bottom edge
must be at least 1000 mm above the "PU" degassing pump.
Various Reflex make-up variants,  4.5 "Optional equipment and accessories",
 34.
If you do not connect the automatic water make-up, you must close the
connection of the "WC" make-up line with a R ½ " blanking plug and start up the
system in "Levelcontrol" mode.
For external water make-up, note the following conditions:
•


6.4
Select the make-up variant in the Customer menu of the device controller,
 10.1.1 "Customer menu",  46.
Choose from one of the following make-up variants in the Customer menu:
•
•
Vacuum spray degassing — 01.04.2022-Rev. D
1 Servitec
2 "WV" 2-way motorized ball
valve
Install at least one "ST" dirt trap with a mesh size ≤ 0.25 mm close
upstream to the "WV" 2-way motorized ball valve or use our Fillset.
Note!
When using an external system make-up, ensure that no Servitec fault
occurs as a result of different operating parameters.
Note!
Use a pressure reducer in the "WC" make-up line if the idle pressure
exceeds 6 bar.
Switching and make-up variants
Pressure-dependent "Magcontrol" make-up.
–
In a facility system with diaphragm expansion tank.
Level-dependent "Levelcontrol" make-up.
–
In a facility system with pressure maintaining station.
Installation
3 "BT" system separator vessel
4 "ST" dirt trap
English — 37