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Installation
If required, install a diaphragm expansion vessel MAG ≥ 35 litres (Reflex N, for
example). It reduces the switching frequency and can be also used in the
individual protection of the heat generators. According to DIN / EN 12828, the
installation of valves between the device and the heat generator is required for
heating systems. Otherwise secure locking mechanisms must be fitted.
"EC" expansion lines
Because of the degassing function, you must install two "EC" expansion lines.
•
One line to the system for the gas-rich water.
•
One line to the system for the degassed water.
The "DN" nominal connection diameter for the "EC" expansion lines must be
designed for the "P
" minimum operating pressure.
0
Calculation P
8.2 "Variomat switching points", 40.
0,
The "DN" nominal connection diameter applies to an expansion line length of up
to 10 m. Beyond this length, select the next larger dimension. Integrate with the
"V" main flow volume of the system. Viewed in the system flow direction, the
gas-rich expansion line must be connected upstream of the expansion line
transporting the degassed water.
Ensure that particulate dirt cannot enter and thus creating an overload of the
"ST" dirt trap. Connect the "EC" expansion lines according to the following
installation variants.
Connection nominal diameter: DN 32
Note!
The water temperature at the connection point of the "EC" expansion
lines must be in the range of 0 °C to 70 °C. The use of auxiliary vessels
does not increase the range of use. Because the thermal protection is
not ensured due to the flow during the degassing phase.
CAUTION
Hot water vapour can cause burns to skin and eyes.
Hot steam can escape from the safety valve. The hot steam will cause
scalding of the skin and eyes.
•
Ensure that the blow-off line of the safety valve is routed so that
injuries are not possible.
7.3.4.3
Make-up line
If you don't connect the automatic water make-up, you must close the
connection of the "WC" make-up line with a R ½ " blind plug.
•
Prevent a potential device fault by ensuring manual water make-up.
•
Install at least one "ST" dirt trap with a mesh size ≤ 0.25 mm close
upstream to the make-up solenoid valve.
–
Install a short line between the "ST" dirt trap and the solenoid valve.
Note!
Use a pressure reducer in the "WC" make-up line if the idle pressure
exceeds 6 bar.
Note!
If you use make-up water from the potable water system, you may need
the Reflex Fillset for the "WC" make-up line, 4.6 "Optional equipment
and accessories", 30.
•
Reflex make-up systems such as Reflex Fillset are designed for
make-up lines with a flow rate < 1 m³/h.
36 — English
7.3.5
Fitting the thermal insulation
Install the optional thermal insulation (2) around the primary tank (1) and close
the insulation with the zip fastener.
Note!
For heating systems, insulate the primary tank and the "EC" expansion
lines against heat loss.
–
Note!
On-site, install thermal insulation when condensate forms.
7.3.6
Fitting the level sensor
ATTENTION
Damage to the pressure load cell due to unprofessional installation
Incorrect installation may result in damage to the "LIS" level sensor,
malfunctioning and incorrect measurements from the pressure load cell.
•
Comply with the instructions regarding the installation of the pressure
load cell.
The "LIS" level sensor uses a pressure load cell. This pressure pick-up is to be
installed after the primary vessel has been placed at its final position, 7.3.3
"Tank installation", 34. Comply with the following instructions:
•
Remove the transport securing device (squared timber) at the vessel base
of the primary vessel.
•
Replace this transport securing device with the pressure load cell.
–
In the case of a vessel volume of 1000 l (Ø 1000 mm) or more, use the
supplied screws to attach the pressure load cell at the vessel base of
the primary vessel.
•
Avoid shock-type loading of the pressure load cell by, for example,
subsequent alignment of the vessel.
•
Use flexible hoses to connect the primary vessel and the first secondary
vessel.
–
Use only the supplied connection sets, 7.3.3 "Tank installation",
34.
•
Perform a null balancing of the filling level when the primary vessel is
aligned and fully emptied, 8.6 "Parametrising the controller in the
Customer menu", 42.
Standard values for level measurements:
Primary vessel
200 l
300 – 500 l
600 – 1000 l
1500 – 2000 l
3000 – 5000 l
7.4
Switching and make-up variants
7.4.1
Function
The current filling level is recorded in the primary tank by the "LIS" level sensor
and evaluated in the controller. The value for the minimum filling level is
specified in the controller's Customer menu. If the level drops below the defined
minimum, the "WV" make-up valve opens and fills the primary tank.
Note!
To complete the make-up function from the drinking water system,
Reflex offers the Fillset with integrated system separator and Fillsoft
softening equipment, 4.6 "Optional equipment and accessories",
30.
Variomat 140 — 25.09.2020 - Rev. A
Thermal insulation is not required for either the primary tank top
or the secondary tank.
Measuring range
0 – 4 bar
0 – 10 bar
0 – 25 bar
0 – 60 bar
0 – 100 bar
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