Trox Technik VFR User manual

Flow adjustment
damper
VFR
Assembly and operating instructions
Read the instructions prior to performing any task!
GB/en

CD10040, 1, GB/en
© TROX GmbH 2023
TROX GmbH
Heinrich-Trox-Platz
47504 Neukirchen-Vluyn
Germany
Telephone: [phone]
Fax: [phone]
E-mail: [email protected]
Internet: www.troxtechnik.com
12/2023
Flow adjustment damper VFR2

1 Safety ................................................................ 4
1.1 Correct use ................................................ 4
1.2 Dangers when handling the unit ................ 4
1.2.1 Electric shock hazards ........................... 4
1.3 Qualified staff ............................................. 4
1.4 Personal protective equipment .................. 4
1.5 Repair and replacement parts ................... 5
1.6 General safety measures .......................... 5
2............................................................................ 6
2.1 Product overview ....................................... 6
2.2 Functional description ............................... 6
2.3 Labelling on unit ........................................ 6
2.3.1 CE marking / declaration of incorpora-
tion .......................................................... 6
3............................................................................ 7
3.1 General installation information ................. 7
3.1.1 Installation of sound attenuators ............ 7
3.2 Fixing/suspension ...................................... 7
3.3 Connecting the air duct ............................. 7
4 Electrical connection ...................................... 9
4.1 Safety notes .............................................. 9
4.2 Installation instructions .............................. 9
5 Commissioning and operation ..................... 10
5.1 Requirement for commissioning .............. 10
5.2 Commissioning ........................................ 10
5.2.1 Installation and connection ................... 10
5.2.2 Functional test ...................................... 10
5.3 Operation ................................................. 10
6 Maintenance ................................................... 11
6.1 System owner's responsibility .................. 11
6.2 Maintenance ............................................ 11
6.3 Inspection measures ................................ 11
6.4 Repair ...................................................... 11
6.5 Maintenance service ................................ 11
7 Faults .............................................................. 12
7.1 Troubleshooting ....................................... 12
8 Decommissioning .......................................... 13
8.1 Safety ...................................................... 13
8.2 Disassembly ............................................ 13
8.3 Disposal ................................................... 13
9 Technical data ................................................ 14
9.1 General data ............................................ 14
9.2 Actuators / attachments ........................... 14
10 Index................................................................ 15
Table of contents
Flow adjustment damper VFR 3

1 Safety
1.1 Correct use
Type VFR flow adjustment dampers are used to balance
the volume flow rate in ventilation systems within closed
rooms.
In kitchen exhaust air systems, the flow adjustment
damper may only be used if it is ensured that the extract
air is cleaned as well as possible by highly effective
aerosol separators, see VDI 2052.
Incorrect use
WARNING!
Danger of injury or risk of damage to property
due to incorrect use!
Misuse of the unit can lead to dangerous situations.
Never use the unit:
– in areas with potentially explosive atmospheres
(EX)
– in aircraft
– outdoors without sufficient protection against the
effects of weather
– In wet areas
– for areas of application that are not described in
this manual
Modifying the unit or using replacement parts that have
not been approved by TROX is not permitted.
1.2 Dangers when handling the unit
The unit is a state-of-the-art product and meets current
safety requirements. Residual risks cannot be excluded,
however, and you should proceed with caution. This
section describes the residual risks that have been iden-
tified in a risk assessment.
Always follow the safety notes in this manual to reduce
health hazards and prevent any hazardous situations.
1.2.1 Electric shock hazards
Electric current
DANGER!
Danger of death due to electric current!
Contact with live parts poses an immediate danger
to life due to electric shock. Damaged insulation or
damaged parts are a life threatening hazard.
– Work on the electrical system must only be car-
ried out by skilled qualified electricians.
– If the insulation is damaged, disconnect the
power supply immediately and have the insula-
tion repaired.
– Before you start working on electric systems and
equipment, switch off the supply voltage and
secure it against being switched on accidentally.
Comply with the following safety rules:
– Switch off the supply voltage.
– Secure it against being switched on acciden-
tally.
– Ensure that no voltage is present.
– Connect to the earth; short circuit connection.
– Do not bypass or disable any circuit breakers. Be
sure to maintain the correct current rating when
you replace a circuit breaker.
– Ensure that live parts do not come into contact
with moisture. Moisture can cause a short circuit.
1.3 Qualified staff
WARNING!
Danger of injury due to insufficiently qualified
individuals!
Incorrect use may cause considerable injury or
damage to property.
– Only specialist personnel must carry out work.
The following degrees of qualification are required for
the work described in the operating manual:
Skilled qualified electrician
Skilled qualified electricians are individuals who have
sufficient professional or technical training, knowledge
and actual experience to enable them to work on elec-
trical systems, understand any potential hazards related
to the work under consideration, and recognise and
avoid any risks involved.
1.4 Personal protective equipment
Personal protective equipment is equipment that pro-
tects the user against health or safety risks at work.
Safety
Personal protective equipment
Flow adjustment damper VFR4

Personal protective equipment must be worn for var-
ious types of work; the protective equipment required
is listed in this manual together with the description of
each type of work.
Description of personal protective equipment
Safety shoes
Safety shoes protect the feet against crushing, falling
parts, and slipping on slippery ground.
1.5 Repair and replacement parts
The devices must be repaired by qualified personnel
using genuine replacement parts only. This particularly
applies to work on the electrical equipment. For safety
reasons, defective devices should therefore be repaired
by the TROX Technical Service, linktarget [Kundendienst Betrieb]
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1.6 General safety measures
Large temperature differences
Be careful when there is a large temperature difference.
If the unit has been kept in an unheated area, wait two
hours before switching on the supply voltage. Conden-
sation may damage the electronic components beyond
repair. Only after about 2 hours will the system have
reached room temperature.
Foreign matter and liquids
Be careful when objects or liquids have got into the
casing, or if the unit emits a smell or smoke. Decommis-
sion the unit and have it checked by the manufacturer.
Safety
General safety measures
Flow adjustment damper VFR 5

2.1 Product overview
Fig. 1: VFR product overview
1 Damper blade
2 Volume flow rate scale
3 Hand wheel
4 Rotary knob locking screw
5 Lip seal
6 Diagram with setting values
2.2 Functional description
Type VFR flow adjustment dampers are suitable for bal-
ancing the volume flow rates in ventilation systems with
circular ducts.
For balancing the volume flow rates of duct sections
and air terminal devices the differential pressure must
be set on the flow adjustment dampers. The value to
be set for a certain required volume flow rate at a
given differential pressure can be taken from the set-
ting value diagram that each flow adjustment damper
carries. This value can then be set using the rotary knob
with the position indicator (infinite adjustment between
0 and 10).
NOTE:
It is important to note that the set volume flow rate only
applies to the current differential pressure in the duct
system or channel system. If the pressure conditions
change, the volume flow rate resulting from the origi-
nally set flow adjustment damper blade position also
changes. This means that the flow adjustment damper
cannot balance the volume flow rate independently of
the duct pressure. If this is desired, an air terminal unit
would have to be used as an alternative.
2.3 Labelling on unit
2.3.1 CE marking / declaration of incorpo-
ration
The VFR unit complies with the Machinery Directive
2006/42/EC as partly completed machinery, as it does
not fulfil an independent function on its own. A CE mark
and a Declaration of Conformity are therefore not per-
mitted in accordance with the Machinery Directive.
In accordance with the Machinery Directive, partly com-
pleted machinery obtains a Declaration of Incorporation.
This Declaration of Incorporation confirms that the basic
safety aspects of the Machinery Directive and any other
directives are observed.
You can download the Declaration of Incorporation on
the Internet at www.troxtechnik.com .
Labelling on unit > CE marking / declaration of incorporation
Flow adjustment damper VFR6

3.1 General installation information
Select the installation location such that the unit,
inspection accesses and the actuator remain acces-
sible for the following work:
– Wiring
– Adjustment work (service socket if necessary)
– Inspection and maintenance, e.g. for replacing
the actuator.
For information on space requirements, see product
data sheets.
Installation in extract air systems in commercial
kitchens is only permitted if the extract air has
already been cleaned with aerosol separators, see
VDI 2052.
3.1.1 Installation of sound attenuators
Circular silencers are usually installed between the flow
adjustment damper and the room. The circular silencer,
e.g. CA / CAH / CF (same nominal size) can be installed
adjacent to or behind a flow adjustment damper.
3.2 Fixing/suspension
General installation information
When designing and constructing ventilation and air
conditioning systems, take into account the require-
ments of VDI 6022, in particular:
– Hygienic, clean installation of all components
and their air distribution surfaces.
– Planning inspection/cleaning openings in the
ducting system.
– Avoidance of leaks.
Affix the unit proficiently and only to load-bearing
components.
Load suspension systems only with the weight of
the unit. Adjacent components and connecting ducts
must be supported separately.
Only use approved and sufficiently dimensioned
suspensions for fixing. Secure screw connections
against self-loosening, e.g., by locking them. Fixing
material is not included in the supply package.
Only use the shortest possible drilling screws for
fixing into place; these screws must not be screwed
into the area of movement of the flow adjustment
damper.
Fig. 2: Installation example for VFR flow adjustment
damper
1 VFR flow adjustment damper
2 Drilling screw for fixing to the ducting
3 Pipe clamp
4 Suspension, e.g., with threaded rod
Fig. 3: Examples of fixings for circular units
1 Fixing to pipe clamps
2 Fixing to suspension element
3.3 Connecting the air duct
When connecting the ducting, the customer must
ensure that the connection points are installed as air-
tight as possible in order to avoid negative influences
from leakages such as air volume deviations, power
consumption, etc. Unless otherwise stated, the con-
necting material is not included in the supply package.
Before connecting the ducting:
Check the inside of the unit for damage and loose
parts.
Remove any contamination from the ducting.
Connecting the air duct
Flow adjustment damper VFR 7

Fig. 4: Spigot without lip seal
Plug-in mounting on ducting in accordance with
EN 1506 or EN 13180.
Fixing and sealing with ventilation strip, e.g.,
KLP180.
When using heat-shrinkable tape, carefully heat up
the plastic parts near the spigot.
Fig. 5: Spigot with optional lip seal
Plug-in mounting on ducting in accordance with
EN 1506 or EN 13180.
Connect the spigot with the ducting, e.g., using
drilling screws.
No further sealing required.
Connecting the air duct
Flow adjustment damper VFR8

4 Electrical connection
4.1 Safety notes
DANGER!
Danger of electric shock! Do not touch any live com-
ponents. Electrical equipment carries a dangerous
electrical voltage.
– Only skilled qualified electricians are allowed to
work on the electrical system.
– Switch off the supply voltage before working on
any electrical equipment.
4.2 Installation instructions
The flow adjustment damper was manufactured and
configured on a project-specific basis. If an electric
actuator has been ordered, it is assembled at the fac-
tory. For units with an electric actuator, the supply
voltage and the signal line must be connected.
The connection is made in accordance with the infor-
mation on the actuator or connection diagrams in the
product data sheet or commissioning instructions for the
respective actuator, www.troxtechnik.com . The voltage
ranges and the terminal connections specified on the
actuator must be observed!
Personnel:
Skilled qualified electrician
Observe the following during installation:
Legal and official regulations, in particular VDE
guidelines.
Observe the technical connection rules (TCR) of the
local grid operator.
Wiring work for supply voltage and signal lines on
site.
The rating and manufacturing of customer-side con-
nections and wiring must be carried out in accord-
ance with the recognised rules of electrical engi-
neering.
The responsibility for design, dimensioning and
sizing of the electrical and network installations
as well as their execution by others lies with the
specialist consultant, HVAC contractor and commis-
sioning engineer appointed by the system owner.
This includes, in particular, the dimensioning of the
power supplies as well as cable types and cross
sections.
Observe wiring guidelines and project-specific circuit
diagrams.
The electrical connection may only be made after
complete installation of the unit.
For units with a 24 V supply voltage, observe the
following:
– Electrical connection only with safety trans-
former
– Make sure that all connected units have the
same GND reference point for the supply
voltage.
Suitable wire clamping brackets must be provided
for all connecting cables.
Electronic components contain no parts that can be
replaced or repaired by the user and may only be
opened by the manufacturer!
Electrical connection
Installation instructions
Flow adjustment damper VFR 9

5 Commissioning and opera-
tion
5.1 Requirement for commissioning
Contamination, e.g. dust, can adversely affect the func-
tionality of the flow adjustment damper.
Therefore, the ventilation and air conditioning system
and its components may not be put into operation for
the first time until the rooms connected to the ventila-
tion system have been cleaned of any contamination
resulting from construction work. Contamination of the
ventilation system by construction dust and sucked-in
dirt particles must be eliminated. In the case of systems
that are heavily contaminated due to construction activ-
ities, the system may need to be cleaned before com-
missioning.
5.2 Commissioning
Code of good practice for commissioning
Commissioning is governed by the standard "DIN
EN 12599 Testing and measuring procedures for the
transfer of installed ventilation and air conditioning
systems", and, if applicable, contractually agreed
services between HVAC contractors, system owners
and installation engineers. The standard describes
the essential commissioning steps of the complete-
ness check, function check, function measurement
as well as report generation and handover.
5.2.1 Installation and connection
The damper blade position must be adjusted by the cus-
tomer on a project-specific basis. The set volume flow
rates only apply for constant pressure conditions in the
air duct system.
If a flow adjustment damper is adapted, this also affects
other flow adjustment dampers in the system, which
must then also be readjusted.
5.2.2 Functional test
Prerequisites for the functional test
Ventilation and air conditioning system is in opera-
tion (fans running).
Air circulation is guaranteed (shut-off dampers and
fire dampers are open).
Only with actuator:
– Electrical connections have been correctly
installed and tested.
– The supply voltage is switched on.
Check the volume flow rate and readjust if neces-
sary.
5.3 Operation
Once commissioning has been completed, the flow
adjustment damper will operate in a self-powered
manner and require no intervention from the system
owner.
NOTE:
It is important to note that the set volume flow rate only
applies to the current differential pressure in the duct
system or channel system. If the pressure conditions
change, the volume flow rate resulting from the origi-
nally set flow adjustment damper blade position also
changes. This means that the flow adjustment damper
cannot balance the volume flow rate independently of
the duct pressure. If this is desired, an air terminal unit
would have to be used as an alternative.
In case of a malfunction, decommission the flow adjust-
ment damper and have it repaired before commis-
sioning it again.
Commissioning and operation
Operation
Flow adjustment damper VFR10

6 Maintenance
6.1 System owner's responsibility
WARNING!
Only authorised specialist personnel are allowed
to perform the described maintenance measures.
The system owner is responsible for maintenance. The
system owner is responsible for creating a maintenance
plan, for defining the maintenance goals, and for the
functional reliability of the equipment.
The legal regulations must be observed during mainte-
nance, e.g. the system owner is responsible for hygienic
operation in accordance with VDI 6022.
6.2 Maintenance
The flow adjustment damper and the actuator are main-
tenance-free with regard to wear, but the flow adjust-
ment damper must still be included in the regular
cleaning of the ventilation system. Regular care and
maintenance ensure operational readiness, operational
reliability, and long service life of the flow adjustment
damper.
6.3 Inspection measures
DANGER!
Danger of electric shock! Do not touch any live com-
ponents. Electrical equipment carries a dangerous
electrical voltage.
– Only skilled qualified electricians are allowed to
work on the electrical system.
– Switch off the supply voltage before working on
any electrical equipment.
CAUTION!
Crushing hazard.
The flow adjustment damper may suddenly open or
close.
Switch off the voltage supply before you start
working on the unit.
Personnel:
Skilled qualified electrician
Protective equipment:
Safety shoes
1. Remove contamination that affects the function of
the flow adjustment damper.
2. Check all screws for firm seating and retighten
them, if necessary.
3. Check electrical feeder cables for damage and
firm seating in the terminals.
4. We recommend that you check the resulting
volume flow rate. If necessary, the duct pressure
should also be checked to make sure that it corre-
sponds to the original pressure settings.
5. Document maintenance measures and measure-
ment results.
6.4 Repair
Repair work is only allowed to be carried out by spe-
cialist personnel or by the manufacturer. Only genuine
replacement parts must be used.
6.5 Maintenance service
Regular maintenance by the TROX Technical Service is
recommended in order to ensure operational readiness,
functional reliability, and long service life of the unit.
Maintenance
Maintenance service
Flow adjustment damper VFR 11

7 Faults
7.1 Troubleshooting
To troubleshoot the problem, check and log the following points. Take appropriate action if necessary. In case of
inquiries to TROX Service, please send the fault log.
System/area:
TROX flow adjustment damper type (see rating
plate):
Actuator (see rating plate):
Complete order code (see rating plate):
Description Yes No Not
applicable
Installation situation
Are the flow adjustment damper and actuator easily accessible? ☐ ☐ ☐
System readiness
Fan switched on? ☐ ☐ ☐
Actuator
Error-free wiring and supply voltage within tolerance zone? ☐ ☐ ☐
Faults
Troubleshooting
Flow adjustment damper VFR12

8 Decommissioning
If the unit is no longer used, it has to be removed and
disposed of in an environmentally friendly manner.
8.1 Safety
Personnel
Disassembly must only be carried out by specialist
personnel.
Only skilled qualified electricians must work on the
electrical system.
Electrical system
DANGER!
Danger of death due to electric current!
Danger of electric shock! Do not touch any live com-
ponents! Live electrical components may suddenly
move uncontrollably and seriously injure people.
Therefore:
– Switch off the power supply and disconnect the
product permanently before you begin to disas-
semble it.
WARNING!
Risk of injury due to incorrect disassembly
Stored residual energy, pointed parts and parts with
sharp edges or corners on the unit or on tools can
cause injuries. Therefore:
Therefore:
– Before you start, make sure that there is suffi-
cient clearance for the work you have to com-
plete.
– Be careful when you touch parts that have sharp
edges or corners.
– Disassemble components professionally. Be
aware that some components are very heavy.
Use lifting gear if necessary.
– Secure components to prevent them from falling
or toppling.
– When in doubt, contact the manufacturer.
8.2 Disassembly
Before you start disassembly:
Switch off the unit and secure it against being
switched on accidentally.
Physically disconnect the unit from the power supply
and discharge any residual energy.
Remove and dispose of any operating fluids, auxil-
iary materials and leftover processing materials in
an environmentally sound manner.
Then professionally clean subassemblies and compo-
nents and disassemble them in compliance with local
occupational safety and environmental protection regu-
lations.
8.3 Disposal
If no take back (disposal) agreement is in place, the
various parts should be recycled:
Scrap the metals.
Take plastic parts to be recycled.
Dispose of other components in a suitable manner,
i.e. depending on their material properties.
ENVIRONMENT!
Risk of harm to the environment due to improper
disposal!
Electronic waste, electronic components, lubricating
and other auxiliary materials are hazardous waste
and must be disposed of by a specialist company.
If you are not sure how to dispose of anything in
an environmentally friendly manner, contact your local
authorities or a specialist disposal company.
Decommissioning
Disposal
Flow adjustment damper VFR 13

9 Technical data
9.1 General data
Nominal sizes 80 – 250 mm
Volume flow rate range 20 – 485 l/s or 72 – 1746 m³/h
Minimum differential pressure 20 Pa
Maximum differential pressure 1000 Pa
Operating temperature 10 – 50 °C
9.2 Actuators / attachments
The following actuators are available for the VFR flow adjustment damper:
Actuators
Attachment Actuator Supply voltage Auxiliary switch
Min/Max actuators
E01 Actuator with potentiome-
ters, TROX/Gruner
24 V AC/DC –
E02 Actuator with potentiome-
ters, TROX/Gruner
230 V AC –
M01 Actuator with mechanical
stops, make: TROX/Belimo
24 V AC/DC –
M02 Actuator with mechanical
stops, make: TROX/Belimo
230 V AC –
Modulating actuators
E03 Actuator with potentiome-
ters, TROX/Gruner
24 V AC/DC –
Technical data
Actuators / attachments
Flow adjustment damper VFR14

10 Index
A
Actuator..................................................................... 14
Application................................................................... 4
Area of application...................................................... 4
Attachments.............................................................. 14
C
CE marking................................................................. 6
Circular silencers......................................................... 7
Commissioning.......................................................... 10
Connecting the air duct............................................... 7
Correct use.................................................................. 4
D
Dangers....................................................................... 4
Declaration of Conformity............................................ 6
Declaration of Incorporation........................................ 6
Decommissioning...................................................... 13
Disassembly.............................................................. 13
Disposal.................................................................... 13
Duct connection.......................................................... 7
E
Electrical connection
Installation instructions........................................... 9
Electric current............................................................ 4
F
Faults........................................................................ 12
Fixing........................................................................... 7
Functional description................................................. 6
Functional test........................................................... 10
I
Incorrect use............................................................... 4
Inspection.................................................................. 11
Installation location...................................................... 7
M
Maintenance.............................................................. 11
Minimum differential pressure................................... 14
Misuse......................................................................... 4
O
Operating temperature.............................................. 14
Operation.................................................................. 10
P
Personnel
Removal............................................................... 13
Product overview......................................................... 6
Protective equipment.................................................. 4
R
Repair.................................................................. 5 , 11
Replacement parts...................................................... 5
Residual risks.............................................................. 4
S
Service....................................................................... 11
Sound attenuators....................................................... 7
Staff............................................................................. 4
Suspending................................................................. 7
T
Technical data........................................................... 14
Troubleshooting......................................................... 12
TROX Technical Service............................................ 11
U
Unauthorised use........................................................ 4
Usage.......................................................................... 4
W
Wiring
Installation instructions........................................... 9
Index
Flow adjustment damper VFR 15

© TROX GmbH 2023
TROX GmbH
Heinrich-Trox-Platz
47504 Neukirchen-Vluyn
Germany
[phone]
[phone]
E-mail: [email protected]
www.troxtechnik.com