Armatec Variomat Basic Manual De Instrucciones Original página 28

Description of the device
CAUTION
Risk of injury due to pressurised liquid
If installation, removal or maintenance work is not carried out correctly, there
is a risk of burns and other injuries at the connection points, if pressurised
hot water or hot steam suddenly escapes.
• Ensure proper installation, removal or maintenance work.
• Ensure that the system is de-pressurised before performing installation,
removal or maintenance work at the connection points.

Note!
When installing the on-site safety valve, the operator must ensure that
there is no danger during blow-off.
 Note!
Equipment parts with a safety function in respect of water-side
pressure limiting according to the Pressure Equipment Directive
2014/68/EU and temperature limiting according to the Pressure
Equipment Directive 2014/68/EU are not supplied.
The operator is responsible for on-site provision of water-side pressure
and temperature protection.
4 Description of the device
4.1 Description
The Variomat VS 1 is a pump-controlled pressure maintaining, make-up and
degassing station for heating and cooling water systems. The Variomat is
essentially a controller with pumps and at least one expansion tank. The
expansion tank is fitted with a diaphragm to divide the tank into an air space and
a water space. preventing the ingress of atmospheric oxygen into the expansion
water.
The Variomat VS 1 provides the following safety features:
• Optimisation of all pressure maintaining, degassing and make-up
processes.
– No direct intake of air thanks to a regulation of the pressure
maintenance with automatic make-up.
– No circulation issues caused by free bubbles in the circuit water.
– Reduced corrosion damage due to oxygen removal from fill and
make-up water.
4.2 Overview
1 "VE" ventilation
2 Degassing valve "DV"
3 "PIS" pressure transducer
4 "PV" overflow valve
5 "WV" make-up valve
4.3 Identification
4.3.1 Nameplate
The nameplate provides information about the manufacturer, the year of
manufacture, the manufacturing number and the technical data.
28 — English
6 Pump "PU"
7 Feed and drain cock "FD"
8 "LIS" level sensor
WC Make-up connection
EC Degassing connection
Variomat Basic — 09.09.2022-Rev. C
Information on the type plate
Type
Serial No.
Min. / max. allowable pressure PS
Max. allowable flow temperature of
system
Min. / max. working temperature
TS
Year of manufacture
Max. system pressure
Min. operating pressure set up on
site
4.3.2 Type code
No.
1 Control unit designation
2 Number of pumps
3 "VG" primary tank
4 Nominal volume
5 "VF" secondary tank
6 Nominal volume
4.4 Function
1 Heating system
"MAG" pressure
2
expansion vessel
3 Reflex Fillset Impulse
4 Control unit
5 Hydraulic inlets
6 Primary vessel air
chamber
7 Secondary vessel air
chamber
ST Dirt trap
FQIRA+ Contact water meter
WC Make-up line
Meaning
Device name
Serial number
Minimum/maximum permissible
pressure
Maximum permissible flow temperature
of the system
Min./max. operating temperature (TS)
Year of manufacture
Max. system pressure
Minimum operating pressure, set on
site
Type code (example)
Variomat VS 1, VG 500 l, VF 500 l
1 2 3 4 5 6
WV Make-up valve
PIS Pressure sensor
PV Overflow valve (motor ball
valve)
PU Pump (pressure maintenance)
SV Safety valve
EC Expansion line
FD Feed and drain valve
LIS Weight measuring cell For
determination of the water
level
DV Degassing valve
VE Ventilation