Description of the device
Variomat 1 — 06.07.2016 – Rev. B English —
1 Heating system WV Make-up valve
2 "MAG" pressure expansion tank PIS Pressure sensor
3 Reflex Fillset Impulse, see chapter 4.6 "Optional
equipment and accessories" on page 13 .
PV Overflow valve (motor ball valve)
4 Control unit PU Pump (pressure maintenance)
5 Hydraulic inlets
• For gas-rich water
• For degassed water
SV Safety valve
6 Primary tank air space EC Expansion line
• For gas-rich water
• For degassed water
7 Secondary tank air space FD Feed and drain cock
ST Dirt trap LIS Pressure load cell
FQIRA+ Contact water meter DV Degassing valve
WC Make-up line VE Ventilation
The device is a pressurisation station for heating and cooling water systems. It is used for maintaining pressure, making-up and
degassing the water in heating and cooling systems. It comprises a control unit consisting of a controller with hydraulics and at least
one expansion tank.
One primary tank and multiple optional secondary tanks may be connected. A diaphragm separates the tanks into an air and a water
space, preventing the penetration of atmospheric oxygen into the expansion water. The "VE" line connects the air space with the
atmosphere. The primary tank is hydraulically flexibly connected to the control unit. The function of the "LIS" level measuring using a
pressure pick-up is thus ensured.
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