Fitting The Add-On Components; Installation Location; Hydraulic Connection - Reflex Servitec 35 Originalbetriebsanleitung

6.3.1

Fitting the add-on components

Install the "DV" degassing valve (2) with the check valve (1) on the "VT" vacuum
spray tube. Check all screw fittings of the Servitec for proper seating.
6.3.2

Installation location

The Servitec is installed on the floor. Select the attachment means according to
the floor properties and the weight of the Servitec.
 Note!
Consider a potential difference in head "h
vessel and the device when calculating the "P
pressure.
6.3.3

Hydraulic connection

6.3.3.1 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 facility system.
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
6 Optional equipment and accessories  4.5 "Optional equipment and
accessories",  29.
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.
" between the expansion
st
" minimum operating
0
Vacuum spray degassing — 18.12.2019-Rev. A
 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",  32.
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
1 Servitec
2 "WV" 2-way motorized ball
valve
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",
 29.
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:
• 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.
Installation
3 "BT" system separator vessel
4 "ST" dirt trap
English — 31