flamco Flamcomat MK-U G4 User guide

www.flamcogroup.com/manuals
ENG Installation and operating instruction
Flamcomat MK-U G4

Manual Flamcomat MK-U G4
We reserve the right to change designs and technical specifications of our products.
3
ENG
Table of Content
1. Liability........................................................................................................................ 5
2. Warranty....................................................................................................................... 5
3. Copyright...................................................................................................................... 5
4. General safety instructions ............................................................................................. 5
4.1 Warning symbols in this manual ................................................................................................. 6
4.2 Purpose and use of this manual ..................................................................................................6
4.3 Qualifications required, assumptions .......................................................................................... 7
4.4 Sta qualification......................................................................................................................7
4.5 Appropriate use ........................................................................................................................7
4.6 Incoming goods.........................................................................................................................7
4.7 Transportation, storage, unpacking.............................................................................................8
4.8 Operations room .......................................................................................................................8
4.9 Noise reduction......................................................................................................................... 8
4.10 EMERGENCY-STOP / EMERGENCY-OFF ......................................................................................... 9
4.11 Personal protective equipment (PPE) ........................................................................................9
4.12 Exceeding permitted pressure / temperature levels .....................................................................9
4.13 System water ..........................................................................................................................9
4.14 Safeguards ............................................................................................................................. 9
4.15 External forces ...................................................................................................................... 10
4.16 Inspection prior to commissioning, maintenance and re-inspection............................................ 10
4.17 Electrical equipment inspections, routine inspection ................................................................ 10
4.18 Maintenance and repairs ........................................................................................................ 10
4.19 Obvious misuse ..................................................................................................................... 11
4.20 Other hazards ....................................................................................................................... 11
5. Product description.......................................................................................................12
5.1 Operating principle MK compressor automat.............................................................................. 12
5.2 Connectivity options ............................................................................................................... 13
5.3 Markings ................................................................................................................................ 13
5.4 Type key compressor control unit ............................................................................................. 13
5.5 Component parts, vessels and connection assembly ................................................................... 14
5.6 Control unit ............................................................................................................................ 18
6.1 Setup ..................................................................................................................................... 19
6.2 Vessel connection.................................................................................................................... 19
6.3 Gas compartment connection ................................................................................................... 20
6.4 Top-up connection................................................................................................................... 21
6.5 Electrical Installation............................................................................................................... 22
7. Commissioning.............................................................................................................23
7.1 Initial commissioning .............................................................................................................. 23
7.2 Commissioning, volume level and operating temperature ........................................................... 24
7.3 Overview menu....................................................................................................................... 25
7.4 Clarification of menu icons, function and location..................................................................... 25
7.5 Malfunction messages ............................................................................................................. 28
7.6 Restarting .............................................................................................................................. 29

Manual Flamcomat MK-U G4
We reserve the right to change designs and technical specifications of our products.
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ENG
8. Maintenance.................................................................................................................30
8.1 Maintenance Warnings............................................................................................................. 30
8.2 Maintenance schedule ............................................................................................................. 30
8.3 Vessel draining/refilling. .......................................................................................................... 31
9. Decommissioning, dismantling.......................................................................................31
Appendix 1. Technical data, information .............................................................................31
Ambient conditions ...................................................................................................................... 31
Minimum distances....................................................................................................................... 32
Appendix 2. Technical data, specifications, hydraulic equipment ..........................................33
Operational values, volumes and dimensions .................................................................................. 33
Appendix 3. Technical data, information, electrical equipment .............................................34
Compressor unit, nominal values ................................................................................................... 34
Control unit, terminal plans .......................................................................................................... 35

Manual Flamcomat MK-U G4
We reserve the right to change designs and technical specifications of our products.
5
ENG
1. Liability
All technical specifications, data and instructions for executable actions and actions that must be executed contained
herein are correct at time of publication. This information is the result of our current findings and experience to the best of
our knowledge. We reserve the right to make technical changes subject to the future development of the Flamco product
referred to in this publication. Hence no rights may be derived from technical data, descriptions and illustrations. Technical
pictures, drawings and graphs do not necessarily correspond to the actual assemblies or parts as delivered. Drawings and
pictures are not to scale and contain symbols for simplification.
2. Warranty
You can find the corresponding specifications in our General Terms and Conditions.
3. Copyright
This manual must be used confidentially. It may be circulated among authorised personnel only. It must not be given to
third parties. All documentation is protected by copyright. Distribution or other forms of reproduction of documents, even
extracts, exploitation or notification of the contents hereof is not permitted, where not otherwise specified. Infringements
are liable to prosecution and payment of compensation. We reserve the right to exercise all intellectual property rights.
4. General safety instructions
Disregard or lack of attention to the information and measures in this manual may pose a hazard to people, animals, the
environment and tangible assets. Failure to observe the safety regulations and the neglect of other safety measures may
lead to the lapse of liability for damages in the event of damage or loss.
Definitions
•Operator: A natural person or legal entity who is the owner of the product and uses the aforementioned product, or is
nominated to use it, under the terms of a contractual agreement.
•Principal: The legally and commercially responsible party in the execution of construction projects. Legally and
commercially liable client in the commission of building projects.
•Responsible person: The representative appointed to act by the main contractor or operator.
•Qualified person (QP): Any person whose professional training, experience and recent professional activity gives them
the requisite professional knowledge. This implies that said person has knowledge derived from relevant national and
internal safety regulations.

Manual Flamcomat MK-U G4
We reserve the right to change designs and technical specifications of our products.
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ENG
4.1 Warning symbols in this manual
Warning against hazardous electric current.
Disregarding this could put lives at risk, cause fires or trigger accidents, lead to component overload and damage,
or prevent functionality.
Warning against the implications of errors and incorrect set-up conditions.
Disregarding this could lead to serious personal injury, to component overload and damage, or prevent
functionality.
Caution! Dangerously high temperatures.
Failure to observe this caution may result in burns to the skin.
You are advised to wear eye protection.
Failure to observe this advice may result in eye injury.
Caution about transporting heavy objects.
Failure to observe this caution may endanger the safety of people in the immediate vicinity of the load.
4.2 Purpose and use of this manual
The following pages list the information, specifications, measures and technical data that allow the relevant personnel to
use this product safely and for the intended purpose.
Responsible persons or those engaged by them carrying out the required services must read this manual attentively and
understand it.
Such services include:
Storage, transportation, installation, electrical installation, commissioning and re-starting, operation, maintenance,
inspection, repair and dismantling.
Where the product is to be used in plants/facilities which do not comply with harmonised European regulations and relevant
technical rules and guidelines of professional associations for this field of application, the present document is purely for
informative and reference purposes.
As this unit may be subject to unlimited inspection at all times, this manual must be kept in the immediate vicinity of the
installed unit, at least within the confines of the operations room.
Installation classification 2 according to the Annex R of 60730-1.
Caution
Heavy load
use fork li

Manual Flamcomat MK-U G4
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ENG
4.3 Qualifications required, assumptions
All personnel must have the relevant qualifications to carry out the required services and be physically and psychologically
capable. The area of responsibility, competence and supervision of personnel is the duty of the Operator.
Required service Professional group example Relevant qualifications example
Storage, transportation Logistics, transport, warehousing Transport and warehousing specialist
Assembly, disassembly, repairs, maintenance.
Re-commissioning aer adding or changing
components. Inspection.
Installation and building services HVAC specialist.
First commissioning of configured control unit
(generic), re-commissioning aer power cut,
operation (work on the terminal and Flextronic
control unit)
People with operations room clearance with
knowledge gleaned from this guide.
Electrical installation Electrical engineering Specialist in electrical engineering/ installation
Initial and re-inspection of electrical systems Qualified person (QP) with certification in Electrical
Engineering
Inspection before commissioning and re-inspection
of pressure equipment
Installation and building services engineering
performed in the context of technical inspection.
Qualified Person (QP)
4.4 Sta qualification
Operating instructions are transferred by Flamco representatives or others assigned by them during delivery negotiations or
on demand.
Training for the required services, installation, dismantling, commissioning, operation, inspection, maintenance and repair
are part of the training / further education for service engineers of the Flamco branch oices or named service contractors.
These training courses cover information on required installation conditions, but not their implementation.
On-site services include transportation, the preparation of an operations room with the requisite foundation engineering
to accommodate the system, and the requisite hydraulic and electrical connections, the electrical installation for the power
source of the expansion automat and installation of the signal leads for the IT equipment.
4.5 Appropriate use
Sealed water-based heating and cooling systems in which temperature-induced changes in the volume of the system water
(the heat transferring agent) can be absorbed and the required operating pressure is governed by a separate expansion
automat.
Suitable and equipped for the operation in heat generating systems according to EN 12828, EN 12952, EN 12953. The
Principal / Operator will need to consult with a notified body on additional safety measures.
Use in similar systems (e.g. heat transfer systems for process industry or technologically conditioned heat) may require
special measures.
4.6 Incoming goods
The items delivered must be compared against the items listed on the shipping note and inspected for conformity.
Unpacking, installation and commissioning may be started only once the product has been checked to conform with the
intended use as stated in the order process and contract. Exceeding the permissible operating or design parameters may
lead to malfunctioning, component damage and personal injury.
If not in line with conformity or if the delivery is incorrect in another way, the product must not be used.

Manual Flamcomat MK-U G4
We reserve the right to change designs and technical specifications of our products.
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ENG
4.7 Transportation, storage, unpacking
The equipment is delivered in packaging units in accordance with the contract specifications or the specifications
required for certain modes of transport and climate zones. These units meet at least the requirements set out in
the Flamco B.V. packaging directives. In accordance with these directives, expansion vessels must be transported
horizontally and pump units upright; each packaged on throw-away pallets. If the packaging is suitable for use with
hoisting gear, this will be indicated at the designated hoisting points.
Important note: Transport the packed goods as close as possible to the envisaged set-up location and make sure
there is a horizontal, solid surface on which the goods can stand.
Note: Take all necessary precautions to ensure that the expansion vessel cannot topple over or wobble once it has
been unpacked and removed from the pallet.
Suitable liing lugs are provided for liing and moving suspended empty vessels prior to installation. Such
devices (liing lugs) must be used in tandem; avoid side-pulling. Once it has been removed from the pallet and the
packaging, the unit must be transferred by pulling it over suitable surfaces. Use methods that prevent uncontrolled falling,
sliding or tipping over. The liing lugs on the vessel are designed to li vertically. They may not be subjected to any lateral
force.
The goods may also be warehoused in their packaging. Once it has been removed from its packaging, the equipment must
be put in position, observing standard safety procedures. Do not stack the equipment.
Use only permitted liing gear and safe tools and wear the required personal protective equipment.
4.8 Operations room
Definition: room which meets the applicable European regulations, European and harmonised standards and relevant
technical rules and guidelines of the professional associations for this field of application. For the use of the expansion
automat as prescribed in this manual these rooms generally contain equipment for
thermal generation and distribution, water heating/cooling and top-up, power source and distribution, such as measuring,
control engineering, control technology and IT.
Access for unqualified and untrained persons must be restricted or forbidden.
The set-up location of the expansion automat must ensure that operation, service, maintenance, inspection, repair,
installation and dismantling can be carried out unhindered and without danger. The floor of the set-up location for the
expansion automat must be such that stability is guaranteed and maintained. Bear in mind that the maximum possible
forces can be exerted from the net mass including the water volume. If stability cannot be guaranteed, there is a danger that
the vessel will tip over or move and, as a consequence in addition to functional defects may lead to personal injury.
The ambient atmosphere must be free from conductive gases, high concentrations of dust and aggressive vapours. There is
the risk of explosion if any combustible gases are present.
Flooded equipment must not be operated. If electrical equipment short circuits, persons or other beings in the water will be
electrocuted. Furthermore, there is a danger of malfunction and partial or irreparable damage to individual components due
to water saturation and corrosion.
4.9 Noise reduction
Installations should be constructed with noise-reduction measures in mind. Mechanical vibrations of the assembly (Module
framework, pipework) in particular can be dampened by using insulation between contact surfaces.
1000 Ltr
>

Manual Flamcomat MK-U G4
We reserve the right to change designs and technical specifications of our products.
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ENG
4.10 EMERGENCY-STOP / EMERGENCY-OFF
To conform with directive 2006/42/EG an EMERGENCY-STOP facility is to be made available during installation. Preferably,
use a grounded wall socket for the power supply to the unit. The socket must stay accessible. If the unit is directly connected
to the power supply, make sure the power supply line is provided with
• a high-sensitivity dierential switch (30mA) (residual current device RCD)
• a mains isolator switch with a contact gap of at least 3 mm.
When additional security measures with EMERGENCY-OFF devices are required according to the design and operation of the
heat generator, these are to be installed on-site.
4.11 Personal protective equipment (PPE)
PPE must be used when carrying out potentially dangerous work and other activities (e.g. welding), in order to prevent or
minimise the risk of personal injury if other measures cannot be taken. These must comply with the requirements specified
by the main contractor or operator of the operations room or the site in question.
If no requirements are specified, to operate the automat no PPE is required. Minimum requirements are well- fitting clothing
and sturdy, closed and skidproof footwear.
Other services require the protective clothing and equipment necessary for the activity in question (e.g. transport and
assembly: rugged, close-fitting work clothing, foot protectors [safety shoes with toe caps], head protection [safety helmet],
hand protectors [protective gloves]; maintenance, repair and overhaul: rugged, close-fitting work clothing, foot protectors,
hand protectors, eye/ face protector [safety goggles]).
4.12 Exceeding permitted pressure / temperature levels
Equipment used in combination with the expansion automat must guarantee that the permitted operating temperature and
the permitted medium temperature (heat transfer medium) cannot be exceeded. Excess pressure and temperature may lead
to component overload, irreparable damage to components, loss of function and, as a result, to severe personal injury and
damage to property. Regular checks/inspections of these safeguards must be carried out. Service logs must be kept.
4.13 System water
Water which is non-flammable, does not contain solids or long-fibre components and does not present a danger to
operations due to its contents, and will not aect or damage the water bearing components (e.g.: pressurised components,
the diaphragm, vessel connection) of the expansion automat. Also observe: VDI 2035 - avoidance of damage to warm water
heating equipment.
System water containing components are pipelines, hoses connected to the vessel, devices and system connections
including valves and fittings, and their casings, sensors, pumps, the vessel itself and the vessel diaphragm. Operation with
improper media can lead to impaired function, damage to components and, as a consequence, to serious personal injury
and damage.
4.14 Safeguards
The equipment supplied is equipped with the required safety devices. To test their eectiveness or restore the set-up
conditions, the equipment must first be taken out of service. Taking the system out of service implies that power should be
cut and hydraulic connections blocked, to prevent accidental or unintentional re-connection.
Mechanical hazards:
The fan cover on the compressor protects users from personal injury caused by moving parts. Before switching the unit
on, make sure that the cover is suitable for this purpose and properly secured.

Manual Flamcomat MK-U G4
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ENG
Electrical hazards:
The protection class of electrically operated components prevents personal injury by electrocution, which can be fatal. The
protection class is usually IP23. The control unit cover, the cover of the pump feed, the threaded cable glands and the valve
connector plugs must be inspected for eectiveness prior to commissioning. The installed pressure and volume sensors are
operated with protective extra-low voltage.
Avoid welding work on additional equipment which is electrically connected to the control unit. Stray welding current or an
improper earth connection could lead to the danger of fire and damage to parts of the unit (e.g. the control unit).
4.15 External forces
Avoid any additional forces (e.g.: forces caused by heat expansion, flow oscillations or dead weights on the flow and return
lines). These can lead to damage / leaks in water-bearing pipework, loss of stability of the appliance and furthermore to
failure connected with substantial material damage and personal injury.
4.16 Inspection prior to commissioning, maintenance and re-inspection
They guarantee operational safety and its observance in line with applicable European regulations, European and
harmonised standards and additional national regulations of the EU member states for this field of application. The required
inspections must be arranged by the owner or operator; an inspection and maintenance log book for scheduling and
traceability of measures taken must be kept.
Tests in line with the German ordinance on operational safety (BetrSichV, June 2015):
Pressure device, Vessel
Category [Appendix II The
Directive 2014/68/EC,
Diagram 2]
Vessel Nominal Volume (l.) Inspection prior to commissioning
[§14]
Inspector
Routine Inspection [§15 (5)]
Timeframe, maximum period [a] / inspector
External Internal* Strength*
III 400 / 6 bar 5000-10000/
3 bar
Qualified Person (QP) Not applicable [§15 (6)] 5 / QP 10 / QP
IV 600-3500/
6 and 10 bar
Qualified Person (QP) Not applicable [§15 (6)] 5 / QP 10 / QP
* [§15 (10)] In the case of internal inspections the visual inspection may be replaced by similar procedures and in the case of strength
tests the static pressure test may be replaced by similar, non-destructive procedures if said tests would not otherwise be possible due
to system design or not significant due to the system mode of operation.
In other Member States of the EC, the required tests for the pressure equipment in line with directive 2014/68/EU as defined
in the national rules must be performed.
4.17 Electrical equipment inspections, routine inspection
Without prejudice to the considerations of the insurer/Operator, it is recommended that the electrical equipment of the
Flamcomat be inspected and documented together with the heating/cooling unit no less than every 18 months (see also DIN
EN 60204-1 2007).
4.18 Maintenance and repairs
These services may only be carried out when the system is shut down or if the expansion automat is not required. The
pressurisation equipment must be taken out of service and guarded against unintentional re-starting until the maintenance
work is finished. Note that the safety circuits and data transmissions made whilst shutting down could trigger the safety
chain or lead to false information. Existing instructions for the heating or cooling unit as a whole must be observed. To stop
hydraulic components, block the relevant sections and drain them using the safe system water drains through the available
drain connections, and relieve the pressure.
Caution: The maximum system water temperature in conducting components (vessel, casings, hoses, pipelines,
peripheral equipment) may reach 70 °C and, in the case of improper operation, may exceed that. This presents a
danger of burns and/or scalding.

Manual Flamcomat MK-U G4
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ENG
The maximum pressure of system water in conducting components may be equal to the maximum set pressure for
the applicable safety valve.
Safety valve max. 6; 10 or 16 bar. Use of eye/face protectors is required if the eyes or face could be injured by flying parts or
spraying fluids.
To stop electrical equipment (control unit, pumps, valves, peripheral equipment), cut power to the control unit. The power
supply must remain o for the period of the work.
It is forbidden to alter or use non-original components or replacement parts without authorisation. Such acts may result
in serious personal injury and endanger operational safety. They will also render any claim for damages against product
liability void.
It is recommended to contact Flamco Customer Service for carrying out these services.
4.19 Obvious misuse
• Operation at incorrect voltage and/or frequency.
• Use in inappropriate system designs.
• Use of unpermitted installation materials.
4.20 Other hazards
• Overload of construction parts by the presence of unpredictable extreme values.
• Operational continuity at risk in the case of changed, non-permissible ambient conditions.
• Operational continuity at risk in the case of safety-control parts being taken out of service or malfunctioning.

Manual Flamcomat MK-U G4
We reserve the right to change designs and technical specifications of our products.
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ENG
5. Product description
The contents of this manual consist of the specifications for a standard execution. Where appropriate, this includes
information on options or other configurations. If optional extras are supplied, further documentation will be supplied in
addition to this manual.
For installation instructions and further documentation in various languages, visit www.flamcogroup.com/ manuals. Further
product information can be obtained from the respective Flamco branch oice (see “Contact” on page 45).
5.1 Operating principle MK compressor automat
The varying pressure levels due to temperature changes in heating or cooling systems are continuously monitored by
the pressure sensor in the compressed air compartment of the vessel. Comparison of these actual pressure levels with a
programmable nominal value leads to the triggering of the valve (release of pressure by means of compressed air discharge)
in the event of the value being exceeded (temperature rise), and triggering of the compressor (increase of pressure by means
of filling the compressed air compartment with compressed air) in the event of the pressure dropping below the nominal
level (temperature drop). The volume of water drained or fed in is made available or taken up by the vessel. Continuous
comparison of the programmable nominal values with the varying volumes registered by the vessel volume sensor prevents
under- or over-filling, whilst allowing volume increase by triggering external top-up devices.
1. Cold
The automat contains
a small amount of
water. The automat is
still at rest.
4. Cooling down
The voume of water
and the system
pressure decreases.
The compressor
increases the
pressure in the air
compartment, water
is transferred back
into the system. This
restores the system
pressure.
3. Full power
By storing an increasing amount of
water in the tank, the automat
keeps the system pressure amost
constant. When the system has
warmed up competey, the vesse
wi be amost fu to capacity.
2. Warming up
The voume of water and the
system pressure increases.
The unit responds to this by
opening the soenoid vave.
Water fows into the vesse.

Manual Flamcomat MK-U G4
We reserve the right to change designs and technical specifications of our products.
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ENG
5.2 Connectivity options
Connectivity options Designated use
Ethernet port To connect Flamcomat to a Building Management System (BMS) via modbus or bacnet.
Standard USB (aka USB-A) For saving the oline log and the configuration parameters. The second option for this port is to update the firmware of the
controller (to download a new control SW)
CAN This pair of the ports is dedicated for the networking of multiple Flamcomats
RS-485 The primary designation is to connect Flamcomat to Internet (via Gateway and HFC protocol). Alternatively – BMS via Modbus
Alternatively – BMS via bacnet (only one out of three options at the same time)
Wireless To connect a smartphone application
5.3 Markings
Name plate - Vessel: Name plate - Compressor module:
Service:
Transport lock:
Electrical warnings:
1000 Ltr
>
1000 Ltr
≤
high voltage! Opening by qualified personnel only.
gefährliche Spannung! Nur vom Fachpersonal zu öffnen.
Disconnect the unit from the power supply before opening it.
Vor dem Öffnen des Gerätes spannungsfrei schalten.
At t e nt i on ,
Ac h t u ng ,
Capacity / Inhalt / Inhoud / Contenance
Gas charge / Vordruck / Voordruk / Pression initiale
Max. working pressure / Max. zul. Betriebsüberdruck / Max. werkdruk / Pression de service max.
Test pressure / Prüfdruck / Testdruk / Pression d’épreuve
Max. temp. diaphragm / Max. Betriebstemp. Membrane / Max. temp. membraan / Temp. membrane max.
Min. working temperature / Min. Betriebstemperatur / Min. werktemperatuur / Température de service min.
Article code / Artikelnummer / Artikelnummer / Code article
litres
bar
bar
bar
°C
°C
Your reliable partner
Flamco B.V. - Bunschoten - the Netherlands
0038
!
Nach Montage:
Transportsicherung
entfernen.
After mounting:
Remove the transport
safety.
Après I'installation:
Retirez la sécurité des
transports.
Na montage:
Verwijder de veiligheid
van het vervoer.
Service Nederland
Tel.: [phone]
Fax.: [phone]
Service Germany
Tel.: [phone]
Flamco B.V. - Amersfoortseweg 9 - 3751 LJ Bunschoten - the Netherlands
Type
Température de service mini. / maxi. admissible
Surpression de service admissible
Surpression d` essai
Capacité nominale
N° de série
litres
bar
bar
Type
Typ
Serial-No.
Serien-Nr.
Nominal volume
Nenninhalt
Permissible working overpressure
Zulässiger Betriebsüberdruck
Test overpressure
Prüfüberdruck
Permissible working temperature min. / max.
Zulässige Betriebstemperatur min. / max.
litre
Liter
0045
Constructeur: Flamco STAG GmbH
Manufacturer: D-39307 Genthin
Hersteller: GERMANY
°C
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Année de fabrication
Year of manufacture
Herstellungsjahr
:
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5.4 Type key compressor control unit
Remark: keying is hardware specific, soware is article number specific
Nom. frequency of the operating voltage (Hz): 50 = 50 Hz; 60 =
60 Hz
Compressor manufacturer: 1; 2
Compressor class: 11 = K11; 31 = K31; 40 = K40
version: MK = Monocompressor; DK=Duocompr.
E.g.: MK11 – 1 -50

Manual Flamcomat MK-U G4
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14
ENG
5.5 Component parts, vessels and connection assembly
1 Basic steel vessel with built-in, exchangeable butyl-rubber bladder for
absorption of the expansion water. Exterior corrosion protected, interior
untreated (interior coa-ted***)
23 Connection assembly pressurisation***, safety valve compressed air
compartment compressed air compartment valve 1, pressurisation valve,
non-return valve, pressure connection to compressed air compartment,
pressure connection to compressor
2 Vessel name plate 24 Safety valve to compressed air compartment
2a Control unit name plate 25 Compressor unit K01 - K03, oil-free
2b Advice to remove transport seal 26 Second compressor unit K01 - K03, oil-free
2c Pressurisation warning 27 Compressor unit K04, oil-free
3 Inspection opening 28 Second compressor unit K04, oil-free
4 Inspection opening MK-U 6500-10000 29 Compressor thermal protection, manual reset
5 Liing hook, load suspension for transport 30 Intake opening compressor
6 Anti-collision protection (compressed air connections) 31 Cooling air inlet compressor
7 Foot-height adjuster 32 Ball valve vessel drain
8 Foot pressure plate MK-U 5000-10000 33 Ball valve system connection
9 Adjusting screw (transport seal volume sensor, removal) 34 Ball valve condensate drain
10 Bleed valve 35 Control unit Flextronic
11 Cover nut (anti-collision protection for bleed valve) 36 Power cable compressor 1, 2** )k*
12 Float vent** 37 Signal wire pressure sensor (SELV)
13 quick-release coupling, connector 38 Pressure sensor
14 Pressure hose, flexible, couplings both sides, length 3000 mm** 39 Signal wire volume sensor (SELV)
15 Pressure hose, flexible, to compressed air comparment of vessel 40 Volume sensor
16 Pressure hose, flexible, to pressure sensor 41 Bladder rupture sensor**
17 Pressure hose, flexible, to safety valve, M-K 400-3500 42 Transport seal pressure sensor
18 Pressure hose, flexible, to compressor 1;2** )k* 43 Water compartment (expansion water)
19 Pressure hose, flexible, to system connection, MK-U 400-10000 44 Bladder
20 System connection M-K, angle 90° 400-3500 l 45 Compressed air compartment
** accessory, optional extra
*** available as special model
)k* second compressor unit
SELV: Safety Extra-Low Voltage design (Safety Extra-Low Voltage)
21 System connection MK-U
22 Connection assembly pressurisation, safety valve compressed air
compartment compressed air compartment valve 1 (1.1***), discharge valve
2; 2.1** )k*, non-return valve 1; 2** )k*, pressure connection to compressed air
compartment, pressure connection to compressor 1; 2 )k*

Manual Flamcomat MK-U G4
We reserve the right to change designs and technical specifications of our products.
15
ENG
MK-U: Main vessel
MK: Auxilliary vessel
EB: single operation
WB: automatic changeover
BL: load dependant operation
MK-U G4 / K31 MK

Manual Flamcomat MK-U G4
We reserve the right to change designs and technical specifications of our products.
16
ENG
MK-U G4 / 2xK04
Dual compressor on request
MK-U / K04
K04 on request
MK-U G4 / 2xK31
Dual compressor on request
MK-U G4 / None
External air on request

Manual Flamcomat MK-U G4
We reserve the right to change designs and technical specifications of our products.
17
ENG
For item, “5.5 Component parts”.

Manual Flamcomat MK-U G4
We reserve the right to change designs and technical specifications of our products.
18
ENG
5.6 Control unit
1 2 3 4 5 6
20
20
19
17
18
17
161514131211
10
98
7
21
1 LED indicator lights
- LED, yellow on: Flextronic is powered.
- LED, Green on: No errors, Automat is running correctly
- LED, Blue on: Bluetooth is active
- LED, Red on: Error occurred.
9USB
10 CANbus port
11 RS485 port
12 F1, Fuse one (1) 5x20, 5A
13 F2, Fuse two (2) 5x20, 10A
14 F3, Fuse three (3) 5x20, 10A
2Acceptance button 15 MAINS connection (L, N, PE)
3Back button 16 MAINS grommet
4Full colour display 17 Relay outputs
5Navigation buttons 18 Potential free outputs
6ON/OFF button 19 Sensor and switch inputs/outputs
7Ethernet port 20 Mounting holes (Flamcomat, Vacumat
8 Micro-USB 21 Mounting holes (ENA, MK-U/C)

Manual Flamcomat MK-U G4
We reserve the right to change designs and technical specifications of our products.
19
ENG
6. Assembly
6.1 Setup
• Remove the transport seal by the capacity sensor once the basic vessel has been erected in the proposed place and no
further positional changes are necessary. Try not to strike this sensor and make sure the sensor is on a surface which does
not impair the function of the sensor pressure-pad.
• Using the foot-height adjuster, adjust the vessel until it is vertical. Use a magnetic spirit level.
• Ensure that no external forces can be exerted on the basic vessel (e.g. tools laid on the vessel, things leaning on the sides).
• Do not fix the basic vessel to the ground on which it is erected (do not use any sort of fastening which can adversely aect
the vessel, e.g. sinking the feet into concrete or lime, welding on the vessel or its feet, clamps and ties on the body of the
structure or appurtenances).
• Place the main vessel and the auxiliary vessel at the same height
6.2 Vessel connection
The system connection should be connected to the heating or cooling system. Appendix 1 shows the installation diagram
and an example installation.
Caution: Close ball valve and shut o system before working on the compressor automat.
Please observe the following specifications before filling and commissioning the pressure-expansion automat:
• The connection should preferably be made in the return flow of the heating or cooling system.
• Please note that a temperature at the system connection > 70 °C would exceed the permissible bladder load and possibly
lead to damage to components.
(Complete insulation of the expansion lines may increase the temperature load on the bladder).
• Ensure that the connection from the main vessel to the system is made only by using the flexible pressure hose that has
been supplied with the vessel.
• Make sure that this connection is made solely with the heat/cool generator, and that there are no external hydraulic
pressure influences present at the point of entrainment (e.g. hydraulic balancers, distributors).
• Use sealant and pipework relevant to the installation; however, please observe at least the maximum permitted
volumetric flow, pressure and temperature values for the expansion line in question.
• Fit isolating equipment in the immediate vicinity of the vessel connection to the system that cannot be closed
unintentionally and preferably includes a fill and drain valve for the water compartments of the vessel. If this equipment is
missing, install this additionally.
• When several vessels are placed in a pressure maintenance system, an extra ball valve is required at the expansion line
before the connection to the main return line. It is recommended to seal this valve to protect against unintentional closing.
• The nominal diameters of the expansion line (supply or return connection from one or more vessels to the main return
line) are to be chosen depending on the installed equipment and the distance to the main return line.
• Pay attention to these recommendations based on practical experience:

Manual Flamcomat MK-U G4
We reserve the right to change designs and technical specifications of our products.
20
ENG
Single vessel automat
Length of expansion line DN of the expansion line,
in relation to the vessel connection
> 5 m Two sizes bigger as vessel connection
> 15 m or > 8 m with 3 pipe bends Three sizes bigger as vessel connection
> 22 m or > 15m To be determined from actual values
> 30 m Avoid at all times!
Advice: install expansion lines as short as possible and as flow-eicient as possible
Install combinations of multiple vessels with the shortest possible distance between each system connection of the vessels
(minimum required spaces for service and repair). Construct a collecting main as follows:
Multiple vessels automat
No. of main and auxilliary vessels DN of the expansion line,
in relation to the vessel connection
up to 3
4 to 6
Four sizes bigger as single vessel connection
Six sizes bigger as single vessel connection
The vessels should preferably be positioned symmetrically or the nominal diameter of the connection lines should be
increased (Example order: M-K > MK-U < M-K; M-K > MK-U - MK-U < M-K Ideal: positioning in polygon). For the return line the
same guidelines apply as for expansion lines.
► Systems with flow temperatures > 100 °C may require a minimum pressure limiter.
6.3 Gas compartment connection
Installations of one or more main vessels with one or more auxiliary vessels with combined pressure control and/or floor
standing compressors** at the automat require a gas compartment connection to be constructed on-site. For this purpose
plug the pressure hose connection (lock in place)** into the connection-adapters mounted on the equipment. Plugging
the connecting plug (pressure hose connection) into the adapter (quick-release coupling) opens the gas compartment.
Disconnecting automatically closes the gas compartment (connecting examples: see equipment). Arrange hoses in such a
way, that constrictions are avoided at all times
Caution: compressed air jet. Note that if pressure hoses are connected or disconnected at one side this can lead to
air being discharged (pressure loss). At the same time the discharge pressure in standard supply situations is up to
2 bar or it corresponds to the system pressure in the case of separately ordered optional extras. Do not point the compressed
air jet at anybody! When discharging compressed air, unrestrained hoses make uncontrolled whipping movements and can
lead to injuries.

Manual Flamcomat MK-U G4
We reserve the right to change designs and technical specifications of our products.
21
ENG
**optional accessory
6.4 Top-up connection
The top-up connection should be connected to the control unit. Assured top-up requires an average set feed pressure of
approx. 4-6 bar (max. 8 bar). High feed pressures may require devices to prevent water hammer (pressure reducing valve).
“Appendix 1.” on page 39 shows the installation diagram and example installation.
Please observe the following specifications before filling and commissioning the pressure-expansion automat:
•Install the feed to the top-up hose with shut-o valve (as delivered).
•Avoid any tensile loads on the hose, bending radii of less than 50 mm and contractions.
•If the top-up feed is connected to the water main, a backflow preventer with filter must be connected in series in
compliance with EN 806-4/EN 1717. Install this accessory horizontally and fit a shut-o valve before this assembly (note:
clean filter regularly and change filters as and when required).
Caution: Connect the shut-o valve to the top-up intake.