Reflex Variomat Touch VS 2-1/35 Originalbetriebsanleitung Seite 34

I/O module (optional expansion module)
4.4 Function
1 Heating system
2 "MAG" pressure
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
Expansion vessel
One primary vessel and multiple optional secondary vessels may be connected. A
membrane separates the vessels into an air and a water space, preventing the
penetration of atmospheric oxygen into the expansion water. The "VE" line
connects the air chamber to the atmosphere. The primary vessel is hydraulically
flexibly connected to the control unit. The functioning of the "LIS" level
measurement using a weight measuring cell is thus ensured.
Control unit
The control unit contains the hydraulics and the controller. The "PIS" pressure
sensor records the pressure and the "LIS" weight measuring cell records the level;
both values are displayed at the controller.
Maintaining pressure
The pressure in the system rises when the water is heated. When the pressure set
at the controller is exceeded, the "PV" overflow valve opens and drains water from
the system into the primary vessel, using the "EC" expansion line. The pressure
within the system drops. The pressure in the facility system drops when the water
cools. When the pressure drops below the set value, the "PU" pump is activated
and uses the "EC" expansion line to transport water from the primary vessel back
into the system. The pressure in the system circuit rises. The controller ensures
pressure maintenance, further supported by the stabilisation provided by the
"MAG" pressure expansion vessel.
Degassing
Two "EC" expansion lines are required to degas the system water. One pipe is
intended for gas-rich water from the system, while one return pipe returns the
degassed water to the system. During the degassing action, the "PU" pump and
the "PV" overflow valve are in operation. This transports a gas-rich partial flow of
the system water V through the de-pressurised primary vessel. Atmospheric
pressure is used to separate the free and dissolved gases and to discharge them
through the "DV" degassing valve. The controller ensures the hydraulic
equalisation by regulating the stroke of the "PV" overflow valve (motor ball valve).
This process can be applied in three different variants (continuous, interval or run-
on degassing).
Make-up
When the water level in the primary vessel falls below the minimum, the "WV"
make-up valve opens until the set level is again reached. During the make-up
process, the number of requests, the time and the make-up time within a cycle are
34 — English
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
Variomat Touch — 22.07.2024
monitored. Using a FQIRA+ contact water meter, the system monitors each
individual make-up quantity and the overall make-up quantity.
4.5 Scope of delivery
The scope of delivery is described in the shipping document and the content is
shown on the packing. Immediately after receipt of the goods, please check the
shipment for completeness and damage. Please notify us immediately of any
transport damage.
Basic pressure maintenance equipment:
•
The device on a pallet.
–
Control unit and "VG" primary vessel.
–
Primary vessel with accessories are packed on the mounting foot.
•
"VE" venting
•
Degassing valve "DV"
•
Reducing coupling
•
Weight measuring cell "LIS"
–
Plastic sleeve with operating manual.
4.6 Optional equipment and accessories
The following optional equipment and accessories are available for this device:
•
Thermal insulation for the primary vessel
•
Secondary vessels
–
Accessories are packed on the mounting foot
•
"VE" ventilation
•
"DV" degassing valve
•
Reducing coupling
• Additional equipment with unsupervised-operation BOB-pipe for "TAZ+"
temperature limiter
•
Fillset for make-up with water.
–
Fillset with integrated system separator, water meter, dirt trap, and
locking mechanisms for the "WC" make-up line.
•
Fillset Impulse with FQIRA+ contact water meter for make-up with water.
•
Servitec for make-up and degassing.
•
Fillsoft for softening the make-up water from the potable water system.
–
The Fillsoft is installed between the Fillset and the device. The device
controller evaluates the make-up quantities and signals the required
replacement of the softening cartridges.
•
Enhancements for the device controller:
–
I/O module for standard communication
–
Communication module for external operation of the controller
–
Master-Slave-Connect for master controllers for maximum 10 devices.
–
Combined switching to increase capacity and parallel switching of 2
hydraulically directly connected systems
–
Bus modules:
•
Profibus DP
•
Ethernet (Modbus TCP/IP)
•
Modbus RTU
•
BACnet-IP
•
BACnet MS/TP
•
Membrane rupture detector.

Note!
Separate operating instructions are supplied with accessories.
5 I/O module (optional expansion module)
The I/O module is connected and wired in the factory.
It is used to expand the inputs and outputs Control Touch controller.
Six digital inputs and six digital outputs are used to process messages and alarms:
Inputs
Three inputs, N.C. with 24 V self potential for standard settings.
•
External temperature monitoring
•
Minimum pressure signal
•
Manual make-up of water
Three inputs, N.O. with 230 V self potential for standard settings.
•
Emergency-Off
•
Manual operation (e.g. for pump or compressor)
•
Manual operation for the overflow