Reflex Variomat 140 Series User manual

Variomat 140 25.09.2020 - Rev. A
Variomat VS 1-1 / 140
Variomat VS 1-2 / 140
GB
Operating manual
Original operating manual

Contents
2 — English Variomat 140 — 25.09.2020 - Rev. A
English
Vari omat 140
25. 09. 2020 - Rev. A
Conte nt s
1Notes on the operating manual........................................ 3
2Liability and guarantee ................................................... 3
3Safety............................................................................ 3
3.1 Explanation of symbols...................................................................... 3
3.1.1 Symbols and notes used..................................................... 3
3.2 Personnel requirements..................................................................... 3
3.3 Personal protective equipment ......................................................... 3
3.4 Intended use...................................................................................... 3
3.5 Inadmissible operating conditions .................................................... 3
3.6 Residual risks...................................................................................... 3
4Description of the device................................................. 4
4.1 Description......................................................................................... 4
4.2 Overview ............................................................................................ 4
4.3 Identification...................................................................................... 4
4.3.1 Nameplate.......................................................................... 4
4.3.2 Type code ........................................................................... 4
4.4 Function............................................................................................. 4
4.5 Scope of delivery................................................................................ 5
4.6 Optional equipment and accessories................................................. 5
5I/O module (optional expansion module).......................... 5
5.1 Technical data .................................................................................... 5
5.2 Settings.............................................................................................. 6
5.2.1 Terminator settings in RS-485 networks............................ 6
5.2.2 Setting the module address............................................... 6
5.2.3 I/O module default settings ............................................... 7
5.3 Replacing the fuses............................................................................ 8
6Technical data................................................................ 8
6.1 Control unit........................................................................................ 8
6.2 Tanks .................................................................................................. 8
7Installation .................................................................... 8
7.1 Installation conditions ....................................................................... 9
7.1.1 Incoming inspection........................................................... 9
7.2 Preparatory work ............................................................................... 9
7.3 Execution ........................................................................................... 9
7.3.1 Positioning ......................................................................... 9
7.3.2 Installation of add-on components for the tanks............... 9
7.3.3 Tank installation................................................................. 9
7.3.4 Hydraulic connection ....................................................... 10
7.3.5 Fitting the thermal insulation.......................................... 11
7.3.6 Fitting the level sensor..................................................... 12
7.4 Switching and make-up variants ..................................................... 12
7.4.1 Function ........................................................................... 12
7.5 Electrical connection........................................................................ 13
7.5.1 Terminal plan, connection component............................ 14
7.5.2 Terminal plan, operating unit .......................................... 15
7.5.3 RS-485 interface................................................................15
7.6 Installation and commissioning certificate......................................15
8Commissioning .............................................................15
8.1 Checking the requirements for commissioning...............................15
8.2 Variomat switching points ...............................................................16
8.3 Modifying the controller's start routine ...........................................16
8.4 Filling the tanks with water..............................................................17
8.4.1 Filling with a hose.............................................................17
8.4.2 Filling with the solenoid valve in the make-up................17
8.5 Venting the pump............................................................................17
8.6 Parametrising the controller in the Customer menu........................18
8.7 Starting Automatic mode.................................................................18
9Operation.....................................................................18
9.1.1 Automatic mode...............................................................18
9.1.2 Manual mode....................................................................18
9.1.3 Stop mode ........................................................................18
9.1.4 Summer operation............................................................19
9.2 Restarting .........................................................................................19
10 Controller .....................................................................19
10.1 Operator panel .................................................................................19
10.2 Calibrating the touch screen ............................................................19
10.3 Configuring settings in the controller..............................................20
10.3.1 Customer menu ................................................................20
10.3.2 Service menu ....................................................................20
10.3.3 Default settings ................................................................21
10.3.4 Setting degassing programmes .......................................21
10.3.5 Degassing programmes – overview.................................22
10.4 Messages22
11 Maintenance.................................................................23
11.1 Maintenance schedule .....................................................................24
11.1.1 Cleaning the dirt trap........................................................24
11.1.2 Cleaning the tanks............................................................24
11.2 Checking switching points...............................................................24
11.3 Inspection.........................................................................................25
11.3.1 Pressure-bearing components .........................................25
11.3.2 Inspection prior to commissioning...................................25
11.3.3 Inspection intervals ..........................................................25
12 Disassembly..................................................................25
13 Annex ..........................................................................25
13.1 Reflex Customer Service ...................................................................25
13.2 Conformity and standards................................................................25
13.3 Guarantee.........................................................................................25

Notes on the operating manual
Variomat 140 — 25.09.2020 - Rev. A English —
3
1Notes on the operating manual
This operating manual is an important aid for ensuring the safe and reliable
functioning of the device.
Reflex Winkelmann GmbH accepts no liability for any damage resulting from
failure to observe the information in this operating manual. In addition to the
requirements set out in this operating manual, national statutory regulations
and provisions in the country of installation must also be complied with
(concerning accident prevention, environment protection, safe and professional
work practices, etc.).
This operating manual describes the device with basic equipment and interfaces
for optional equipment with additional functions.

Notice!
Every person installing this equipment or performing any other work at
the equipment is required to carefully read this operating manual prior
to commencing work and tocomply with its instructions. The manual is
to be provided to the
product operator and must be stored near the
product for access at any time.
2Liability and guarantee
The device has been built according to the state of the art and recognised safety
rules. Nevertheless, its use can pose a risk to life and limb of personnel or third
persons as well as cause damage to the system or other property.
It is not permitted to make any modifications at the device, such as to the
hydraulic system or the circuitry.
The manufacturer shall not be liable nor shall any warranty be honoured if the
cause of any claim results from one or more of the following causes:
• Improper use of the device.
• Unprofessional commissioning, operation, service, maintenance, repair or
installation of the device.
• Failure to observe the safety information in this operating manual.
• Operation of the device with defective or improperly installed
safety/protective equipment.
• Failure to perform maintenance and inspection work according to
schedule.
• Use of unapproved spare parts or accessories.
Prerequisite for any warranty claims is the professional installation and
commissioning of the device.

Note!
Arrange for Reflex Customer Service to carry out commissioning and
annual maintenance,
see chapter 13.1 "Reflex Customer Service" on
page 25 .
3Safety
3.1 Explanation of symbols
3.1.1 Symbols and notes used
The following symbols and signal words are used in this operating manual.
DANGER
Danger of death and/or serious damage to health
• The sign, in combination with the signal word 'Danger', indicates
imminent danger; failure to observe the safety information will result
in death or severe (irreversible)injuries.
WARNING
Serious damage to health
• The sign, in combination with the signal word 'Warning', indicates
imminent danger; failure to observe the safety information can result
in death or severe (irreversible) injuries.
CAUTION
Damage to health
• The sign, in combination with the signal word 'Caution', indicates
danger; failure to observe the safety information can result in minor
(reversible) injuries.
ATTENTION
Damage to property
• The sign, in combination with the signal word 'Attention', indicates a
situation where damage to the product itself orobjects within its
vicinity can occur.

Note!
This symbol, in combination with the signal word 'Note', indicates
useful tips and recommendations for efficient handling of the product.
3.2 Personnel requirements
Assembly, commissioning and maintenance as well as connection of the
electrical components may only be carried out by knowledgeable and
appropriately qualified electricians.
3.3 Personal protective equipment
Use the prescribed personal protective equipment as required (e.g. ear
protection, eye protection, safetyshoes, helmet, protective clothing, protective
gloves) when working on the system.
Information on personal protective equipment requirements is set outin the
relevant national regulations of the respective country of operation.
3.4 Intended use
The device is a pressure maintaining station for heating and cooling water
systems. It is used to maintain the water pressure and to add water within a
system. The devices may be used only insystems that are sealed against
corrosion and with the following water types:
• Non-corrosive
• Chemically non-aggressive
• Non-toxic
The ingress of atmospheric oxygen by permeation into the entire heating and
cooling water system, make-up water and similar must be reliably minimized
during operation.
3.5 Inadmissible operating conditions
The device is not suitable for the following applications:
• Mobile system operation.
• Outdoor operation.
• For use with mineral oils.
• For use with flammable media.
• For use with distilled water.

Note!
It is not permitted to make any modifications to the hydraulic system or
the circuitry.
3.6 Residual risks
This device has been manufactured to the current state of the art. However,
some residual risk cannot be excluded.
CAUTION
Risk of burns on hot surfaces
Hot surfaces in heating systems can cause burns to the skin.
• Wear protective gloves.
• Please place appropriate warning signsin the vicinity 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.
WARNING
Risk of injury due to heavy weight
The devices are heavy. Consequently, there is a risk of physical injury and
accidents.
• Use suitable lifting equipment for transportation and installation.

Description of the device
4
— English Variomat 140 — 25.09.2020 - Rev. A
4Description of the device
4.1 Description
The Variomat VS 1-1/140 and VS 1-2/140 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 1-1/140 and VS 1-2/140 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
Variomat with one pump (VS 1-1/140) Variomat with two pumps (VS 1-
2/140)
1 Main switch 4 Degassing valve "DV"
2 Control unit
• Connecting unit for
pump(s)
• Operating unit for
"Reflex Control Touch"
controller
5 "VF" secondary vessel
6 "VF" primary vessel
7 Feed and drain cock "FD"
8 "LIS" level sensor
3 "VE" equalisation elbow
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.
Information on the type plate
Meaning
Type Device name
Serial No. Serial number
Information on the type plate
Meaning
min. / max. allowable pressure P Minimum/maximum permissible
pressure
max. continuous operating
temperature
Maximum temperature for continuous
operation
min. / max. allowable temperature
/ flow temperature TS
Minimum / maximum permissible
temperature / TS flow temperature
Year built Year of manufacture
min. operating pressure set up on
shop floor
Factory set minimum operating
pressure
at site Set minimum operating pressure
max. pressure saftey valve
factory - aline
Factory set actuating pressure of the
safety valve
at site Set actuating pressure of the safety
valve
4.3.2 Type code
No.
Type code (example)
1 Control unit
designation
2 Number of pumps Variomat VS 1- 1 VG 500 l, VF 500 l
3 "VG" primary
vessel 1 2 3 4 5 6
4 Nominal volume
5 "VF" secondary
vessel
6 Nominal volume
4.4 Function
1
Heating system
WV
Make-up valve
2 "MAG" expansion vessel PIS Pressure sensor
3 Reflex Fillset Impulse PV Overflow valve (motor ball
valve)
4 Control unit PU Pump (pressurisation)
5 Hydraulic inlets SV Safety valve
6 Primary vessel air space EC Expansion pipe
7 Secondary vessel air
space
FD Feed and drain cock
ST Dirt trap LIS Pressure load cell
FQIRA+
Contact water meter
DV
Degassing valve
WC Make-up pipe VE Ventilation
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 atmosphericoxygen into the expansion water. The "VE" line
connects the air space with the atmosphere. The primary vessel is hydraulically
flexibly connected to the control unit. The function of the "LIS" level measuring
using a pressure pick-up is thus ensured.

I/O module (optional expansion module)
Variomat 140 — 25.09.2020 - Rev. A English —
5
Control unit
The control unit contains the hydraulic system and the controller. The "PIS"
pressure transducer records the pressure and the "LIS" pressure pick-up registers
the level; both values are displayed at the controller.
Pressurisation
The pressure in the system rises whenthe 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, usingthe "EC"expansion line. The
pressure within the system drops. The pressure in the facility system drops when
the watercools. When the pressure drops belowthe set value, the "PU" pump is
activated and uses the "EC" expansion pipe to transport water from the primary
vessel back into the system. The pressure in the facility system rises. The
controller ensures that the pressure is maintained, further supported by the
stabilisation provided by the "MAG" pressure expansion vessel.
Degassing
Two "EC" expansion lines are required todegas 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 thedegassing 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
Whenthe waterlevel in the primary vessel falls belowthe minimum, the "WV"
make-up valve opens until the set level is again reached. During the make-up
process, thenumber of requests, the time and the make-up time within a cycle
are 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 packaging. Immediately after receipt of the goods, please check
the shipment forcompleteness and damage. Please notify us immediately of any
transport damage.
Basic pressurisation equipment:
• The device on a pallet.
– Control unit and "VG" primary tank.
– Primary tank with accessories are packed on the tank base.
• "VE" aeration and de-aeration
• "DV" degassing valve
• Reducing sleeve
• "LIS" pressure pick-up
– Plastic sleeve with operating manual.
4.6 Optional equipment and accessories
The following optional equipment and accessories are available for this device:
• Heat insulation for the primary vessel
• Secondary vessels
– Accessories are packed on the vessel mounting
• "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 isolator, water meter, dirt trap, and
locking mechanisms for the "WC" make-up pipe.
• 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 supply
system.
– The Fillsoft is installedbetween 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 modules for standard communication, see chapter 5 "I/O module
(optional expansion module)" on page 5 .
– 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 RTU
• BACnet-IP
• BACnet MS/TP
• Diaphragm rupture monitor.

Note!
Separate operating
instructions are supplied with accessories.
5I/O module (optional expansion module)
The I/O module is connected and wired inthe factory.
It is used toexpand the inputs and outputs Control Touch controller.
Six digital inputs and six digital outputs are used toprocess 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
Outputs
Potential-free as changeover contacts. Default settings for messages:
• Make-up fault
• Below minimum pressure
• Above maximum pressure
• Manual or Stop operation

Note!
•
For the default settings of the I/O modules, see Chapter 5.2.3 "I/O
module default settings" page 7
•
All digital inputs and outputs can be set freely as option. Settings
to be made by Reflex Customer Service, see chapter 13.1 "Reflex
Customer Service" on page 25
5.1 Technical data
Housing Plastic housing
Width (W):
340 mm
Height (H): 233.6 mm
Depth (D): 77 mm
Weight: 2.0 kg
Permissible operating temperature: -5 °C – 55 °C
Permissible storage temperature: -40 °C – 70 °C
Degree of protection IP:
IP 64
Power supply: 230 V AC, 50 – 60 Hz (IEC 38)
Fuse (primary): 0.16 A time-lag

I/O module (opt
ional expansion module)
6
— English Variomat 140 — 25.09.2020 - Rev. A
Inputs, outputs
• 6 floating relay outputs (changeover)
• 3 digital inputs 230 V AC
• 3 digital inputs 24 V AC
• 2 Analogue outputs (these are not required, because they are already
contained in the Control Touch controller).
Interfaces to the controller
• RS-485
• 19.2 kbit/s
• Floating
• connection with plug or screw terminals
• RSI-specific protocol
5.2 Settings
GEFAHR
Danger to life from electric shock!
Risk of serious injury or death due to electric shock. Some parts of the main
board may still carry 230 V voltage even with thedevice physically isolated
from the 230 V power supply.
• Before you remove the covers, completely isolate the device controller
from the power supply.
• Verify that the main circuit board is voltage-free.
5.2.1 Terminator settings in RS-485 networks
Examples for the activation and deactivation of terminators in RS–485 networks.
• DIP switches 1 and 2 are located on the main board of the controller.
• Maximum length for an RS–485 connection is 1000 metres
Device controller with I/O module
1 Relay outputs of the I/O
module*
• 6 digital outputs
4 "Control Touch" controller
5 RS-485 connection
2 I/O module 6 Optional RS-485 connection
• Master - Slave
• Field bus
3 Connections of the I/ O
conductors
* The 2 analogue outputs are not required because the Control Touch controller
already has two analogue outputs for pressure and level measurement.
Terminator settings
Jumper/switch
Settings I/O module Control Touch
Jumper J10
Activated X ---
and J11
Deactivated --- ---
DIP switch 1
Activated
---
X
and 2
Deactivated --- ---
Device controllers and I/O module in Master-Slave function
1 Control Touch controller in
Master function
4 I/O module for the Slave
function
2 I/O module for the Master
function
5 I/O module for expansion
3 Control Touch controller in
Slave function
Master function
Terminator settings
Jumper/switch
Settings I/O module Control Touch
Jumper J10
Activated X ---
and J11
Deactivated --- ---
DIP switch 1
Activated --- X
and 2
Deactivated --- ---
Slave function
Terminator settings
Jumper /
Switch
Settings I/O module I/O module
for expansion
Control
Touch
Jumper J10
Activated --- X ---
and J11
Deactivated X --- ---
DIP switch 1
Activated --- --- X
and 2
Deactivated --- --- ---
5.2.2 Setting the module address
Setting of the module address on the I/O module's main circuit board
1 DIP switch
DIP-switch position
DIP switch 1 – 4: • For setting the module address
• Variable setting to ON or OFF
DIP switch 5: • Permanently to position ON
DIP switch 6 – 8: • For internal testing
• To position OFF during operation
Use DIP switches 1 – 4 to set the module address.
Proceed as follows:
1. Pull out the mains plug of the I/O module.
2. Open the housing cover.
3. Set DIP switches 1 – 4 to position ON or OFF.

I/O module (optional expansion module)
Variomat 140 — 25.09.2020 - Rev. A English —
7
Module address
DIP switch
Used for the
modules
1
2
3
4
5
6
7
8
1 1 0 0 0 1 0 0 0 1
2 0 1 0 0 1 0 0 0 2
3 1 1 0 0 1 0 0 0 3
4 0 0 1 0 1 0 0 0 4
5 1 0 1 0 1 0 0 0 5
6 0 1 1 0 1 0 0 0 6
7 1 1 1 0 1 0 0 0 7
8 0 0 0 1 1 0 0 0 8
9 1 0 0 1 1 0 0 0 9
10 0 1 0 1 1 0 0 0 10
5.2.3 I/O module default settings
The inputs and outputs of the I/O module each have default settings.
These default settings can be changed, if required, and adjusted to local
conditions.
Responses by the inputs 1 – 6 of the I/O module are recorded and displayed in
the device controller's fault memory.

Note!
•
Default settings apply to software version V1.10 and higher.
•
All digital inputs and outputs can be set freely as option. The
setting is carried out by Reflex Customer Service, see chapter 13.1
"ReflexCustomer Service" on page 25
Location
Signal
evaluation
Message text
Fault memory
entry
Priority
Signal on the input triggers the following action
INPUTS
1 N.C. External temperature
monitoring
Yes Yes • Solenoid valves are closed.
• Solenoid valve (2) in overflow line (1)
• Solenoid valve (3) in overflow line (2)
• Output relay (1) is switched.
2 N.C. External signal, Minimum
pressure
Yes No • Solenoid valves are closed.
• Solenoid valve (2) in overflow line (1)
• Solenoid valve (3) in overflow line (2)
• Output relay (2) is switched.
3 N.C. Manual make-up Yes Yes • Solenoid valve (1) in make-up line is manually opened.
• Output relay (5) is switched.
4 N.O. Emergency-Off Yes Yes • Pumps (1) and (2) are switched off.
• Solenoid valves (2) and (3) in the overflow lines are closed.
• Solenoid valve (1) in the make-up line is closed.
• Switches "Group alarm" in the device controller.
5 N.O. Manual pump 1 Yes Yes • Pump (1) is manually switched on.
• Output relay (5) is switched.
6 N.O. Manual OF-1 Yes Yes Solenoid valve (1) is opened.
OUTPUTS
1 Changeover
contact
--- --- --- See input 1
2 Changeover
contact
--- --- --- See input 2
3 Changeover
contact
--- --- --- • Below minimum pressure.
• "ER 01" message in the controller
4 Changeover
contact
--- --- --- • Maximum pressure exceeded
• "ER 10" message in the controller
5 Changeover
contact
--- --- --- Switches in manual mode
Switches in stop mode
Switches with inputs 3,5,6 active
6 Changeover
contact
Make-up fault --- --- • Make-up setting values exceeded.
• Switches the following messages in the device controller:
• "ER 06", Make-up time
• "ER 07", Make-up cycles
• "ER 11", Make-up quantity
• "ER 15", Make-up valve
• "ER 20", Maximum make-up quantity

Technical data
8
— English Variomat 140 — 25.09.2020 - Rev. A
5.3 Replacing the fuses
DANGER
Risk of electric shock!
Risk of serious injury or death due to electric shock. Some parts of the main
board may still carry 230 V voltage even with the device physically isolated
from the 230 V power supply.
• Before you remove the covers, completely isolate the device controller
from the power supply.
• Verify that the main circuit board is voltage-free.
Fusingis provided on the I/O module's main circuit board.
1 Microfuse F1 (250 V, 0, 16 A slow)
Proceed as follows:
1. Disconnect the I/O module from the power supply.
• Pull the power plug from the bus module.
2. Open the terminal space cover.
3. Remove the housing cover.
4. Replace the defective fuse.
5. Re-attach the housing cover.
6. Close the terminal space cover.
7. Reconnect the power supply for the module.
The fuse replacement is completed.
6Technical data
6.1 Control unit

Note!
The following values apply forall control units:
– Permissible flow temperature:
–
Permissible operating temperature:
–
Permissible ambient temperature:
–
Degree of protection:
–
Number of RS-485 interfaces:
–
IO module:
–
Electrical voltage control unit:
– Noise level:
120 °C
70 °C
0 °C – 45 °C
IP 54
1
Optional
230 V; 2 A
55 db
Type
Power output
(kW)
Power supply
(V / Hz; A)
Weight
(kg)
VS 1-1/140 3.3 400 / 50; 20 47
VS 1-2/140 6.6 400 / 50; 20 99
6.2 Tanks
Primary tank Secondary tank

Note!
Optional heat insulation is available for primary tanks,
see chapter 4.6
"Optional equipment and accessories" on page 5 .

Note!
The following values apply for all vessels:
– Operating pressure:
–
Connection:
6 bar
G1 "
Type
Diameter Ø
"D" [mm]
Weight [kg]
Height "H"
[mm]
Height "h"
[mm]
200
634
37
1060
146
300 634 54 1360 146
400 740 65 1345 133
500
740
78
1560
133
600 740 94 1810 133
800 740 149 2275 133
1000/740
740
156
2685
133
1000/1000 1000 320 2130 350
1500 1200 465 2130 350
2000 1200 565 2590 350
3000 1500 795 2590 380
4000 1500 1080 3160 380
5000 1500 1115 3695 380
7Installation
DANGER
Risk of serious injury or death due to electric shock.
If live parts are touched, there is risk of life-threatening injuries.
• Ensure that the system is voltage-free before installing the device.
• Ensure that the system is secured and cannot be reactivated by other
persons.
• Ensure that installation work for the electricconnection of the deviceis
carried out by an electrician, and in compliance with electrical
engineering regulations.
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.
CAUTION
Risk of burns on hot surfaces
Hot surfaces in heating systems can cause burns to the skin.
• Wear protective gloves.
• Please place appropriate warning signsin the vicinity of the device.

Installation
Variomat 140 — 25.09.2020 - Rev. A English —
9
CAUTION
Risk of injury due to falls or bumps
Bruising from falls or bumps on system components during installation.
• Wear personal protective equipment (helmet, protective clothing,
gloves, safety boots).

Note!
Confirm that installation and start
-up have been carried out correctly
using the installation and commissioning certificate. This
action is a
prerequisite for the making of warranty claims.
–
Have the ReflexCustomer Service carry out commissioning and
the annual maintenance.
7.1 Installation conditions
7.1.1 Incoming inspection
Prior to shipping, this device was carefully inspected and packed. Damages
during transport cannot be excluded.
Proceed as follows:
1. Upon receipt of the goods, check the shipment for
• completeness and
• possible transport damage.
2. Document any damage.
3. Contact the forwarding agent to register your complaint.
7.2 Preparatory work
Condition of the delivered device:
• Check all screw connections of the device for tight seating. Tighten the
screws as necessary.
Preparing the device installation:
• No access by unauthorised personnel.
• Frost-free, well-ventilated room.
– Room temperature 0 °C to 45 °C (32 °F to 113 °F).
• Level, stable flooring.
– Ensure sufficient bearing strength of the flooring before filling the
tanks.
– Ensure that the control unit and the tanks are installed on the same
level.
• Filling anddewatering option.
– Provide a DN 15 filling connection according to DIN 1988 - 100 and
En 1717.
– Provide an optional cold water inlet.
– Prepare a drain for the drain water.
• Electric connection, see chapter 6 "Technical data" on page 8 .
• Use only approved transport and lifting equipment.
– The load fastening points at the tanks must be used only as
installation resources.
7.3 Execution
ATTENTION
Damage due to improper installation
Additional device stresses may arise due tothe connection of pipes orsystem
equipment.
• Ensure that pipes are connected from the device to thesystem without
them being stressed or strained.
• If necessary, provide support structures for the pipes or equipment.
For installation, proceed as follows:
• Position the device.
• Complete the primary tank and the optional secondary tanks.
• Create the water-side connections of the control unit to the system.
• Create the interfaces according to the terminal plan.
• Install the water connections between optional secondary tanks toeach
other and to the primary tank.

Notice!
For installation, note the operability of the valves and the inlet
options
of the connecting lines.
7.3.1 Positioning
Determine the positions for the control unit, primary vessels and secondary
vessels (if used). The distance of the control unit to the primary vessel results
from the connection set supplied.
• Variomat VS 1-1:
– The control unit can be installed on either side or in front of the
primary vessel.
• Variomat VS 1-2:
– The control unit can be installed on either side or in front of the
primary vessel.
7.3.2 Installation of add-on components for the tanks
The add-on components are packed in plastic bags and attached to the base of
the vessels.
• Pressure compensation elbow (1).
• Reflex Exvoid with pre-fitted check valve (2)
• "LIS" pressure pick-up
For add-on components, proceed as follows:
1. Install the Reflex Exvoid (2) at the connection of the corresponding vessel.
2. Remove the protective cap from the degassing valve.
3. Use the compression fitting to installthe pressure compensation elbow(1)
for ventilation at the vessels.

Note!
Install the "LIS" pressure pick
-up only after finalising the installation of
the primary vessel,see chapter 7.3.3 "Tank installation" on page 9 .

Note!
To ensure fault
-free operation, do not seal off the aeration and
ventilation.
7.3.3 Tank installation
ATTENTION
Damage due to improper installation
Additional device stresses may arise due tothe connection of pipes orsystem
equipment.
• Ensure that pipes are connected from the device to the system without
them being stressed or strained.
• If necessary, provide support structures for the pipes or equipment.
ATTENTION
Device damage resulting from dry running of the pump
If the pump is incorrectly connected, there is a risk of dry-running.
• Ensure that the connections for the overflow collector and the pump
are not interchanged.
• Ensure correct connection of the pump to the primary tank.

Installation
10
— English Variomat 140 — 25.09.2020 - Rev. A
Comply with the following notes regarding the installation of the primary vessel
and the secondary vessels:
• All flange openings at the vessels are viewing and maintenance openings.
– Place the vessels withsufficient distances to sides and ceiling.
• Install the vessels on a level surface.
• Ensure rectangular and free-standing position of the vessels.
• Use only vessels of the same type and dimensions when using secondary
vessels.
• Ensure proper functioning of the "LIS" level sensor.
ATTENTION Property damage caused by overpressure. Do not attach the
vessels firmly to the floor.
• Install the control unit on the same level as the vessels.
1 Adhesive label 3 "Pump" connection set
2 "Overflow collector" connection set 4 Secondary vessel
connection set
• Align the primary vessel, see chapter 7.3.1 "Positioning" on page 9 .
• Connect the connection set (2) and (3) with the screw fittings and gaskets
to the connections atthe lower vessel flange of the primary vessel.
– Ensure that you connect the connection set for the overflow collector
to the connection (2) belowthe label (1). If you interchange the
connections, there is a risk that the pump may run dry.
– For vessels up to 740 mm Ø:
• Connect the connection set (2) and (3) to the two free 1-inch
barrel nipples at the vessel flange.
• Connect the connection set (4) of the secondary vessel to the T-
joint at the outlet of the vessel flange.
– For vessels from 1000 mm Ø:
• Connect the connection set (2) tothe 1-inch barrel nipple of
the vessel flange.
• Connect the connection sets (3) and (4) to the T-joint at the 1-
inch barrel nipple of the vessel flange.

Note!
If necessary, install the supplied connection set (4) at the optional
secondary vessel. Connect the connection set (4) with auser
-supplied
flexible pipeline tothe primary vessel.
7.3.4 Hydraulic connection
7.3.4.1 Overview
Overview of hydraulic connections, Variomat VS 1-1/140 as example
1 Degassing line (pump line)
• Degassed water outlet to the system
• Connection, female thread Rp 1 inch
2 Overflow line Rp 1 inch
• Gas-rich water inlet from the system
• Connection, female thread Rp 1 inch
3 Primary vessel connection
• Pump connection set
• Male thread 1 inch
4 Primary vessel connection G 1 inch
• Overflow collector connection set
• Connection, male thread 1 inch
5 Connection, make-up line
• Connection, female thread Rp ½ inch

Installation
Variomat 140 — 25.09.2020 - Rev. A English —
11
7.3.4.2 Connection to the facility system
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 thesafety valve is routed so that
injuries are not possible.
ATTENTION
Damage due to improper installation
Additional device stresses may arise due tothe connection of pipes orsystem
equipment.
• Ensure that pipes are connected from the device to thesystem without
them being stressed or strained.
• If necessary, provide support structures for the pipes or equipment.
Connection to the primary vessel
The control unit is positioned to the primary vessel as determined by the
selected installation variant, and is connected tothe vessel using its connection
set.
The connections to the system are identified by adhesivelabels on the control
unit:
Pumpen
Überströmung Nachspeisung
Zur
Anlage Zur Anlage Zum Behälter
Pump to system
connection
Overflow valve to
system connection
Make-up to system
connection
Connection to the system
1 Heat generator
2 Optional equipment and accessories
3 Secondary vessel
4 Reflex rapid-action coupling R 1 x 1
5
Primary vessel
6 Primary vessel connection set
7 Typical representation of the control unit
EC Degassing line
• Gas-rich water from the system
• Degassed water to the system
LIS "LIS" level sensor
WC Make-up pipe
MAG Pressure expansion vessel
If required, install a diaphragm expansion vessel MAG ≥ 35 litres (Reflex N, for
example). It reduces the switching frequency and can be alsoused 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 diameterfor the "EC" expansion lines must be
designed for the "P0" minimum operating pressure.
Calculation P0, see chapter 8.2 "Variomat switching points" on page 16 .
The "DN" nominal connection diameter applies to an expansion line length of up
to 10 m. Beyond this length, selectthe next largerdimension. Integrate with the
"V" main flow volume of the system. Viewedin 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 watertemperature at the connection point of the "EC" expansion
lines must be in the range of 0 °Cto 70 °C. T
he 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 thesafety 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 forthe "WC" make
-up line, see chapter 4.6 "Optional
equipment and accessories
" on page 5 .
•
Reflex make-up systems such as Reflex Fillset are designed for
make-up lines with a flow rate < 1 m³/h.
7.3.5 Fitting the thermal insulation

Installation
12
— English Variomat 140 — 25.09.2020 - Rev. A
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.
–
Thermal insulation is not required for either the primary tank top
or the secondary tank.

Note!
On
-site, installthermal 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 theinstructions regardingthe 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, see
chapter 7.3.3 "Tank installation" on page 9 . 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 pressureload 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, see chapter 7.3.3 "Tank
installation" on page 9 .
• Perform a null balancing of the filling level when the primary vessel is
aligned and fully emptied, see chapter 8.6 "Parametrising the controller in
the Customer menu" on page 18 .
Standard values for level measurements:
Primary vessel
Measuring range
200 l 0 – 4 bar
300 – 500 l 0 – 10 bar
600 – 1000 l 0 – 25 bar
1500 – 2000 l
0 – 60 bar
3000 – 5000 l 0 – 100 bar
7.4 Switching and make-up variants
7.4.1 Function
The current filling level is recorded inthe primary tank by the "LIS" level sensor
and evaluated inthe controller. The value for the minimum filling levelis
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 withintegrated system separator and Fillsoft
softening equipment,
see chapter 4.6 "Optional equipment and
accessories" on page 5 .
7.4.1.1 Using a single-tank system
1 Heat generator
2
"MAG" expansion vessel
3 Primary vessel
4 Control unit
5 Reflex Fillset
ST Dirt trap
WC Make-up pipe
PIS
Pressure transducer
WV Make-up solenoid valve
EC Degassing line
• For gas-rich water from the system.
• For degassed water into the system.
LIS Level sensor
Single boiler system ≤ 350 kW, water temperature < 100 °C.
• Connect the Reflex Fillset with integrated system separatorupstream
when using mains water for make-up.
• If you don't connect a Reflex Fillset upstream, use an "ST" dirt trap with a
mesh size ≥ 0.25 mm for the make-up.

Note!
The quality of the make
-up water must comply with the applicable
standards such as VDI
2035.
–
If you cannot achieve this quality,usethe Reflex Fillsoft to soften
the make-up water from the mains water network.

I
nstallation
Variomat 140 — 25.09.2020 - Rev. A English —
13
7.4.1.2 Using a district heating substation
1 District heating house substation
2
Primary vessel
3 "MAG" expansion vessel
4 Site-provided make-up unit
5 Control unit
WC Make-up pipe
PIS Pressure transducer
WV
Make-up solenoid valve
ST Dirt trap
EC Degassing line
• For gas-rich water from the system.
• For degassed water into the system.
LIS Level sensor
District heating water is particularly suitable as make-up water.
• Water treatment is not necessary.
• Use an "ST" dirt trap with a mesh size ≥ 0.25 mm for the make-up.

Note!
You require the approval of the district heating water supplier.
7.4.1.3 Use in a system with central return flow admixture
1
Heat generator
2 "MAG" expansion vessel
3 Primary vessel
4 Control unit
5 Reflex Fillsoft
6 Fillset Impuls
WC Make-up pipe
PIS Pressure transducer
WV Make-up solenoid valve
ST Dirt trap
EC Degassing line
• For gas-rich water from the system.
• For degassed water into the system.
LIS Level sensor
Make-up with water via a softening system.
• Always integrate the device in the "V"main volume flowto ensure
degassing the system water. It isthe system side in systems with central
return flow admixture or hydraulicswitching points. The vessel of the heat
generatormust be fitted with an individual protective device.
• When using Reflex Fillsoft softening systems, always install the Fillset
Impulse.
– The device controllerevaluates the make-up quantities and signals a
required replacement of the softening cartridges.

Note!
The quality of the make
-up water must comply with the applicable
standards such as VDI 2035.
7.5 Electrical connection
DANGER
Risk of serious injury or death due to electric shock.
If live parts are touched, there is risk of life-threatening injuries.
• Ensure that the system is voltage-free before installing the device.
• Ensure that the system is secured and cannot be reactivated by other
persons.
• Ensure that installation work for the electricconnection of the deviceis
carried out by an electrician, and in compliance with electrical
engineering regulations.
For the electrical connection, you must differentiate between a connection
component and an operating component.
1 Connection component cover
(hinged)
4 Touch control
2 Main switch 5 Connection component rear
3 Operating unit cover (hinged)
• RS-485 interfaces
• Pressure and Level
outputs
6 Cable bushings
• Supply and fusing
• Floating contacts
• Pump connection “PU“
The following descriptions apply to standard systems and are limited to the
necessary user-provided connections.

Installation
14
— English Variomat 140 — 25.09.2020 - Rev. A
1. Disconnect the system from the power source and secure it against
unintentional reactivation.
2. Remove the covers.
DANGER Risk of serious injury or death due to electric shock. Some
parts of the device's circuit board may still be live with 230 V even after the
device has been physically isolated from the power supply by pulling out of
the mains plug. Before you remove the covers, completelyisolate the
device controller from the power supply. Verify that the main circuit board
is voltage-free.
3. Insert a suitable screwed cable gland for the cable bushing at the rear of
the connection component. M16 or M20, for example.
4. Thread all cables to be connected through the cable glands.
5. Connect all cables as shown inthe terminal diagrams.
– For installer supplied fusing, comply with the connected loads of the
device , see chapter 6 "Technical data" on page 8 .
6. Install the cover.
7. Connect the mains plug to the 230 V power supply.
8. Activate the system.
The electrical connection is completed.
7.5.1 Terminal plan, connection component
1
Pressure
3
Fuses
2 Level
Terminal
number
Signal
Function
Wiring
Supply
X0/1 L
Supply 230 V, maximal 16 A User
supplied
X0/2 N
X0/3 PE
X0/1 L1
Supply 400 V, maximal 20 A User
supplied
X0/2 L2
X0/3 L3
X0/4 N
X0/5 PE
Circuit board
1
PE
Voltage supply Factory-
provided
2 N
3 L
4
Y1
Make-up solenoid valve WV User,
optional
5 N
6
PE
7 Y2
PV 1 overflow valve (motor ball
valve or solenoid valve) --8 N
9
PE
10 Y3
PV 2 overflow valve (motor ball
valve or solenoid valve) ---
11
N
12 PE
13 Dry-run protection message
(floating)
User,
optional
14
15 M1
PU 1 pump Factory-
provided
16 N
17
PE
Terminal
number
Signal
Function
Wiring
18
M2
PU 2 pump Factory-
provided
19 N
20 PE
21 FB1 Pump 1 voltage monitoring Factory-
provided
22a FB2a Pump 2 voltage monitoring Factory-
provided
22b FB2b External make-up request
together with 22a
Factory-
provided
23 NC
Group message (floating) User,
optional
24
COM
25 NO
27 M1 Flat plug for supply, pump 1 Factory-
provided
31 M2 Flat plug for supply, pump 2 Factory-
provided
35 +18 V (blue)
Analogue input, LIS level
measuring
at the primary vessel
User
supplied
36
GND
37 AE (brown)
38
PE (shield)
39 +18 V (blue)
Analogue input, "PIS" pressure
measuring
at the primary vessel
User,
optional
40 GND
41 AE (brown)
42 PE (shield)
43 +24 V Digital inputs User,
optional
44 E1 E1: Contact water meter Factory-
provided
45 E2 E2: Insufficient water switch ---
51 GND
PV 2 overflow valve (motor ball
valve), only for VS 1-2
Factory-
provided
52 +24 V (supply)
53 0 – 10 V
(correcting
variable)
54 0 – 10 V
(feedback)
55 GND
PV 1 overflow valve (motor ball
valve)
Factory-
provided
56 +24 V (supply)
57 0 – 10 V
(correcting
variable)
58 0 – 10 V
(feedback)

Commissioning
Variomat 140 — 25.09.2020 - Rev. A English —
15
7.5.2 Terminal plan, operating unit
1 RS-485 interfaces 6 Analogue outputs for Pressure
and Level
2 I/O interface 7 Battery compartment
3 I/O interface (reserve) 8 Bus module supply voltage
4
Micro-SD card
9
DIP switch 2
5 10 V supply 10 DIP switch 1
Terminal
number
Signal
Function
Wiring
1 A RS-485 interface
S1 networking
User
supplied
2 B
3 GND S1
4 A RS-485 interface
S2 modules: Expansion or
communication module
User
supplied
5 B
6 GND S2
7 +5 V
I/O interface: Interface to the
main board Factory
8 R × D
9 T × D
10 GND IO1
11 +5 V
I/O interface: Interface to the
main board
(reserve)
---
12
R × D
13 T × D
14
GND IO2
15 10 V~ 10 V supply Factory16
17
FE
18 Y2PE
(shielding)
Analogue outputs: Pressure and
Level
Standard 4 – 20 mA
User
supplied
19
Pressure
20 GNDA
21 Level
22
GNDA
7.5.3 RS-485 interface
Use the S1 and S2 RS-485 interfaces to retrieve all controller data and to enable
the communication with control centres orother devices.
• S1 interface
– A maximum 10 devices can be used in amaster-slave linked circuit
via the this interface.
• S2 interface
– "PIS" pressure and "LIS" level.
– Operating modes of the "PU" pumps.
– Operating states of the motorised ball valve/solenoid valve.
– Values of the "FQIRA +" contact watermeter.
– All messages.
– All entries in the fault memory.
The following bus modules form part of the optional accessories available for
interface communication.

Note!
If required, please contact the ReflexCustomerService for the protocol
of the RS
-
485 interface, details of the connections and information about
the accessories offered.
7.5.3.1 Connecting the RS-485 interface
Main circuit board of the Control Touch controller.
1 Connection terminals for RS-485 connection
2 Dip switch 1
Proceed as follows:
1. Use ascreened cable to connect the RS-485 interface to the main circuit
board.
• S 1
– Terminal 1 (A+)
– Terminal 2(B-)
– Terminal 3(GND)
2. Connect the cable screen at one side.
• Terminal 18
3. Activate the terminator on the main circuit board.
• Dip switch 1

Note!
Activate the terminatorwhen thedevice is at the beginning or the end
of an RS-485 network.
7.6 Installation and commissioning certificate

Note!
The installation and commissioning certificate can be found at the end
of the operating manual.
8Commissioning

Note!
Confirm that installation and start
-up have been carried out correctly
using the installation, start
-up and maintenance certificate. This action
is a prerequisite for the making of warranty claims.
–
Have the ReflexCustomer Service carry out commissioning and
the annual maintenance.
8.1 Checking the requirements for commissioning
The device will be ready for commissioning when the tasks described in the
"Installation" chapter have been completed. The system designer or an assigned
expert is responsible for carrying out the commissioning.Commission the
storage tank according to the information in the corresponding installation
manual. Note the following information on commissioning:
• The control unit is connected to the primary tank and the secondary tanks,
if provided.
• The water connections of the tanks to the facility system are established.
• The tanks are not filled with water.
• The valves for emptying thetanks are open.
• The facility system is filled with water and gas-vented.
• The electrical connection has been created according to applicable
national and local regulations.

Commissioning
16
— English Variomat 140 — 25.09.2020 - Rev. A
8.2 Variomat switching points
The "P0" minimum operating pressure is determined by the location of the
pressurisation. The controller calculates the switching points for the solenoid
valve "PV" and the pump "PU” from the "P0" minimum operating pressure.
The "P0" minimum operating pressure is calculated as follows:
P0= Pst + PD+ 0.2 bar* Enter the calculated value in the start routine
of the controller, see chapter 8.3 "Modifying
the controller's start routine" on page 16 .
Pst = hst/10 hst in metres
PD= 0.0 bar for safety temperatures ≤ 100 °C
P
D
= 0.5 bar
for safety temperatures = 110 °C
*Addition of 0.2 bar recommended, no addition in extreme cases

Note!
Avoid
dropping below the "P0"minimum operating pressure. Vacuum,
vaporisation and cavitation are thus excluded.
8.3 Modifying the controller's start routine

Note!
For handling the operator panel
see chapter 10.1 "Operator panel" on
page 19
The start routine is used to set the parameters for device commissioning. It
commences with the first switching on of the controller and can only be set
once. The following parameter changes or checks are carried out from the
customer menu, see chapter 10.3.1 "Customer menu" on page 20 .
A three-digit PM code is assigned to the setting options.
Step
PM Code
Description
1 Start of the start routine
2 001 Select the language
3 Remember: Prior to installation and commissioning,
read the operating manual!
4 005 Set the minimum operating pressure PO, see chapter 8.2
"Variomat switching points" on page 16 .
5
002
Set the time
6 003 Set the date
Step
PM Code
Description
7
121
Select the primary vessel nominal volume
8 Null balancing: The primary vessel must be empty!
The system checks whether the signal from the level
sensor matches the selected primary vessel
9 End of the start routine. The stop mode is active.
The system automatically displays the first page of the start routine when you
switch on the device forthe first time:
1. Press "OK“.
– The start routine moves to the next page.
2. Select the required language and conform your entry with "OK".
3. Prior to commissioning, read the operating manual in full and check for
proper assembly.
4. Select the calculated minimum operating pressure and conform with "OK".
– For calculation of the minimum operating pressure, see chapter 8.2
"Variomat switching points" on page 16 .
5. Set the time. The time of an alarm will be stored in the controller's fault
memory.
– Use the "Left" and "Right" buttons to selectthe display value.
– Use the "Up" and "Down" buttons to change thedisplay value.
– Confirm your entries with "OK".

Commissioning
Variomat 140 — 25.09.2020 - Rev. A English —
17
6. Set the date. The date of an alarm will be stored in the controller's fault
memory.
– Use the "Left" and "Right" buttons to selectthe display value.
– Use the "Up" and "Down" buttons to change thedisplay value.
– Confirm your entries with "OK".
7. Select the size of the primary vessel.
– Use the "Up" and "Down" buttons to change thedisplay value.
– Confirm your entries with "OK".
– For the primary vessel data, see the name plate or see chapter6
"Technical data" on page 8 .
– The controller checks whether the level measuring signal matches
the dimensional data of the primary vessel. The primary vessel must
be fully emptied, see see chapter7.3.6 "Fitting the level sensor" on
page 12 .
8. Press "OK“.
– Null balancing is executed.
– If null balancing is not successfully completed, you cannot
commission the device. In this case, please contact Customer Service,
see chapter 13.1 "Reflex Customer Service" on page 25 .
9. Press "OK" to conclude the start routine.

Note!
After successful conclusion of the start routine, you are in Stop mode. Do
not yet switch toAutomatic mode.
8.4 Filling the tanks with water
The following information applies to the devices:
• Control unit and primary tank.
• Control unit and primary tank and one secondary tank.
• Control unit and primary tank and more than one secondary tanks.
Facility system System temperature Filling level of primary tank
Heating system ≥50 °C (122° F) Approx. 30 %
Cooling system < 50 °C (122° F) Approx. 50 %
8.4.1 Filling with a hose
Preferably use a water hose to fill the primary vessel with water when the
automatic make-up device is not yet connected.
• Use avented water hose filled with water.
• Connect the water hose tothe external water supply and the "FD"feed and
drain cock (1) at the primary vessel.
• Check whether the shut-off valves between control unit and primary vessel
are open (supplied pre-wired in open position).
• Fill the primary vessel with water until the filling level has been reached.
8.4.2 Filling with the solenoid valve in the make-up
1. Use the "Manual mode" button to switch to "Manual" mode.
2. Open the “WV make-up valve” via the corresponding button until the
specified filling level is reached.
– Continuously monitor this process.
– If a high-water alarm is generated, the make-up valve “WV make-up
valve” is automatically closed.
8.5 Venting the pump
CAUTION
Risk of burns
Escaping hot medium can cause burns.
• Maintain a sufficient distance from the escaping medium.
• Wear suitable personal protective equipment (safety gloves and
goggles).
Vent the "PU" pumps as follows:
1
Vent screw
• Remove the vent screws from the pumps and vent the pumpsuntil bubble-
free water escapes.
• Screw the vent screws back in and tighten.
• Check the vent screws for leaks.

Operation
18
— English Variomat 140 — 25.09.2020 - Rev. A

Note!
•
Repeat venting after the first starting of the pump. It is possible
that downstream air cannot escape with the pumps stationary.
•
Repeat the venting process , ifthe delivery rates of the pumps
remain at zero.
8.6 Parametrising the controller in the Customer menu
Use the Customer menu to display or correct system-specific values. In the
course of commissioning, the factory settings must be adjusted forthe system-
specific conditions.
– For adjusting the default settings, see chapter 10.3 "Configuring settings in
the controller" on page 20 .
– For information about controller operation, see chapter 10.1 "Operator
panel" on page 19 .
8.7 Starting Automatic mode
Automatic mode can be started as soon as the system is filled with water and the
gases contained have been vented.
• Press button "AUTO“.
– During commissioning, continuous degassing is automatically
activated to remove any residual free or dissolved gases from the
system. This time can be set in the Customer menu as required by the
system conditions. The default setting is 12 hours. Subsequent to the
continuous degassing, the device automatically switches to interval
degassing.

Note!
The commissioning process is nowconcluded.

Notice!
The "ST" dirt trap in the "DC" degassing line must be cleaned after the
expiry of the continuous degassing time at the latest,
see
chapter 11.1.1 "Cleaning the dirt trap" on page 24 .
9Operation
9.1.1 Automatic mode
Use:
After initial commissioning has been successfully completed
Start:
Press "AUTO“.
Functions:
• Automatic mode is suitable for continuous device operation and the
controller monitors the following functions:
– Pressurisation
– Expansion volume compensation
– Degassing
– Automatic make-up.
• The "PU" pump and the "PV1" motor ball valve of the overflow line are
regulated by the controller so that the pressure that is being regulated
remains constant to within ± 0.2 bar.
• Faults are indicated and evaluated in the display.
• The "PV1" motor ball valve of the overflow line remains open during the
adjustable degassing time as long as the pump “PU”continues to run.
• In the de-pressurised "VG" primary vessel, the system water is expanded and in
this way degassed.
• For Automatic mode, you can set various degassing programmes in the
Customer menu, see chapter 8.6 "Parametrising the controller in the
Customer menu" on page 18 . The controller display supplies the necessary
information.
Continuous degassing
After commissioning and repairs to the connected system, selectthe continuous
degassing program.
The device will continuously degas for a set period of time. Free and dissolved
gases are quickly removed.
• Automatic start after execution of the start routine during commissioning.
• Activated from the Customer menu.
• The degassing time can be set in the Customer menu, dependent on the
actual system.
– The default setting is 12 hours. After expiryof the set time, the device
automatically switches to interval degassing.
Interval degassing
For continuous operation, select the interval degassing program. As the default it
is set in the Customer menu.
Degassingis continuous during an interval. An idlingtime follows an interval.
The interval degassing mode can be limited toan adjustabletime period. Time
settings can be made in the Service menu.
• Automatic activation upon expiry of continuous degassing.
• Degassing interval (default 90 s)
• Break time (default: 120 min)
• Start / end (8:00 a.m. - 6:00 p.m.)
9.1.2 Manual mode
Use:
For testing and maintenance tasks.
Start:
1. Press "Manual mode".
2. Select the desired function.
Functions:
Manual mode allows you to select the following functions and to perform a test
run:
• "PU" pump.
• "Motor ball valve in the "PV1" overflow line.
• The solenoid valve “WV1”formakeup.
You have the option to simultaneously switch multiple functions and to test
them in parallel. Switch the function on and off by touching the corresponding
button:
• The button is highlighted green. The function is switched off.
Press the desired button:
• The button is highlighted blue. The function is switched on.
The change in the filling level and the vessel pressure are indicated on the
display.

Note!
Manual operations cannot be performed if safety
-relevant parameters
would be exceeded. Switching is then disabled.
9.1.3 Stop mode
Use:
For device commissioning
Start:
Press "STOP“.

Controller
Variomat 140 — 25.09.2020 - Rev. A English —
19
Functions:
Except for the display of information, thedevice is non-functional in Stop mode.
Function monitoring is stopped.
The following functions are deactivated:
• The "PU" pump is switched off.
• The "PV" motor ball valve in the "PV" overflow line is closed.
• The solenoid valve in the "WV" make-up line is closed.

Note!
The system returns an alarm if the Stop mode is activated for more than
4 hours.
If "Floating alarm contact?" in the Customermenu is set to"Yes", the
system outputs the alarm to the group alarm contact.
9.1.4 Summer operation
Use:
In summer
Start:
Switch off degassing via the customer menu.
Functions:
The degassing of the network water is not necessary if the circulating pumps of
the system are shut down during Summer because gas-rich water cannot reach
the device. Energy is saved.
After Summer, select the "Interval degassing" degassing programme in the
Customer menu or "Continuous degassing", if required.
For a detailed description of the selection of degassing programmes, see
chapter 9.1.1 "Automatic mode" on page 18 .

Note!
The pressurisation feature of the device must remain operative in
Summer.
– Automatic mode remains active.
9.2 Restarting
CAUTION
Risk of injury due to pump start-up
Hand injuries may occur when the pump starts up if you turn the pump
motor at the impeller using a screwdriver.
• Switch the pump to a zero-volts state before turning the pump at the
fan wheel with a screwdriver.
ATTENTION
Device damage due to pump start-up
Pump damage may occur when the pump starts up if you turn the pump
motor at the impeller using a screwdriver.
• Switch the pump to a zero-volts state before turning the pump at the
fan wheel with a screwdriver.
After an extended standstill time (the device is de-energised or in Stop mode),
the pumps may jam. For this reason, use a screwdriver to rotate the pumps at the
fan wheel of the pump motors before restarting.

Note!
A jamming of the pumps is prevented during operation thanks to forced
starting action (after 24 hours).
10 Controller
10.1 Operator panel
1 Message line 8 Display value
2 "▼"/ "▲" buttons
• Set digits.
9 "Manual mode" button
• For function tests.
3 ""/"" buttons
• Select digits.
10 "Stop mode" button
• For commissioning.
4 "OK" button
• Confirm/acknowledge
input.
• Browse in the menu.
11 "Automatic mode" button
• For continuous
operation.
5 "Up" and "Down" scroll bar
• "Scroll" in the menu.
12 "Set-up menu" button
• For setting parameters.
• Fault memory.
• Parameter memory.
• Display settings.
• Primary vessel
information.
• Software version
information.
6 “Scroll back" button
• Cancel.
• Page back to the main
menu.
7 "Display help texts" button
• Opens help texts.
13 "Info menu" button
• Displays general
information.
10.2 Calibrating the touch screen
You can calibrate the touch screen when touching the desired buttons does not
work satisfactorily.
1. Switch the device off at the main switch.
2. Touch and hold the touch field with yourfinger.
3. Switch on the main switch while touching the touch field.
– When starting the program, the controller automatically switches to
the "Update/Diagnostics" function.
4. Touch the "Touch calibration" button.
5. Touch the displayed crosses on thetouch screen aftereach other.
6. Switch the device off and on again at the main switch.
The touch screen is fully calibrated.

Controller
20
— English Variomat 140 — 25.09.2020 - Rev. A
10.3 Configuring settings in the controller
You can configure the controller settings regardless of the currently selected and
active operating mode.
10.3.1 Customer menu
10.3.1.1 Customer menu – overview
Use the Customer menu to correct or determine system-specific values. In the
course of initial commissioning, the factory settings must be adjusted for the
system-specific conditions.

Note!
For a description of the operation, see chapter
10.1 "Operator panel" on
page 19 .
A three-digit PM code is assigned to the setting options
PM Code
Description
001
Select the language
002 Set the time
003
Set the date
Execute null balancing
– The primary vessel must be empty
– The system checks whether the signal from the level sensor
matches the selected primary vessel.
005 Set the minimum operating pressure P0, see chapter 8.2 "Variomat
switching points" on page 16 .
Degassing >
010 • Degassing programme
– No degassing
– Continuous degassing
– Interval degassing
– Run-on degassing
011 • Continuous degassing time
Make-up >
023 • Maximum make-up time …min
024 • Maximum make-up cycles … /2 h
027 • With water meter "Yes/'No"
– If "Yes", continue with 028
– If "No", continue with 007
028 • Make-up quantity (Reset) "Yes/No"
– If "Yes", reset to "0"
029
• Maximum make-up quantity ... l
030 • Softening "Yes/'No"
– If "Yes", continue with 031
– If "No", continue with 007
007 Maintenance interval… months
008
Floating contact
• Message selection >
– Message selection: only messages marked with "√“ are
output.
– All messages: All messages are output.
015 Change remote data "Yes/No”
Fault memory > History of all messages
Parameter memory > History of parameter input
Display settings > Brightness, screen saver
009
• Brightness … %
010 • Screen saver brightness … %
011 • Screen saver delay …min
018 • Secure access "Yes/No"
PM Code
Description
Information >
• Vessel
• Volume
• Weight
• Diameter
• Position
– Position in %
• Software version
10.3.1.2 Setting the customer menu - "Time" example
The setting of system-specific values isexplained below using the setting of the
time as example.
To adjust the system-specific values, proceed as follows:
1. Press "Settings".
– The controller switches to the setting area.
2. Press "Customer >".
– The controlleropens the Customer menu.
3. Press the required area.
– The controller switches to the selected area.
– Use the scroll bar to navigate through the list.
4. Set the system-specific values for the individual areas.
• Use the "Left" and "Right" buttons to selectthe display value.
• Use the "Up" and "Down" buttons to change thedisplay value.
• Confirm your entries with "OK".
– Press "i" to display a help text for the selected area.
– Press "X" to cancel your input without saving the new settings. The
controller automatically opens again the list.
10.3.2 Service menu
This menu is protected with a password. It can be accessed only by the Reflex
Customer Service.