Airflow Duplexvent Rotary DV1500 User manual

Installation, use and
maintenance manual
for
Installation, use and maintenance manual
Duplexvent Rotary
DV1500-DV15000 (indoor version)
DV1500-DV15000 (outdoor version)
Duplexvent Rotary Roof

2
Dear customer,
Thank you for selecting our product. We hope it will work to your full satisfaction.
The installation manual contains all necessary instructions, information, advices and
recommendations for safe and correct equipment installation and commissioning. Please, read the
manual carefully and follow the instructions.
Explanation of used symbols:
Items or sections marked with Üor with grey background; applies only to appliances manufactured in
compliance with the hygienic requirements of Regulation VDI 6022 (indicated on the identification
plate, see following chapters).
Important notes
●Only a qualified person may carry out the electrical wiring, commissioning and setting work.
●Read carefully the installation manual and the operation and maintenance manual before installing
the equipment!
●The equipment, as well as all accessories must be installed and used in accordance with the
design documentation, manufacturer’s technical conditions and respective valid regulations and
technical standards.
●The equipment must not be installed and operated in aggressive environment which could
damage inner and outer parts of the equipment.
●An initial electrical audit report for the power supply to the equipment must be obtained prior to
bringing the equipment to a continuous operation.
ÜBefore putting the appliance into operation, the acceptance test (see VDI2079 and DIN EN
V 12599) of the entire HVAC system where the appliance is integrated must be carried out.The
test must include the inspection of hygienic requirements as per Regulation VDI 6022 and must be
documented.The operator must be able to provide the acceptance test report at any time.
Otherwise the manufacturer may not guarantee compliance with hygienic requirement.
The manufacturer is not liable for damages caused by unprofessional installation which
was in contrast with the installation manual and common practice for air-handling
systems and controls.

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Contents
1Storage and transport.................................................................................... 4
1.1 Transport of compact units.......................................................................................4
1.2 Transport of semicompact units................................................................................5
2Safety and hygienic instructions................................................................... 5
2.1 Safety instructions....................................................................................................5
2.1.1 Prior to installation please check:..........................................................................6
2.1.2 Prior to the first putting into operation please check:.............................................6
2.1.3 When launching the unit for the first time please check:........................................6
2.2 Hygienic instructions and requirements....................................................................6
2.3 Description of units Rotary and Rotary-N.................................................................7
2.4 Installation of compact units.....................................................................................8
2.5 Assembly of semicompact units.............................................................................10
2.5.1 Assembly of blocks.............................................................................................10
2.5.2 Description of assembled unit.............................................................................14
2.5.3 Manipulation with door on the roof......................................................................15
2.5.4 Connecting fans and propulsion of rotary heat exchanger ..................................16
2.5.5 Connecting temperature sensors........................................................................16
2.5.6 Connecting pressure sensors .............................................................................17
2.5.7 Connecting servo motors....................................................................................18
2.5.8 Roof assembly (only 8000-15000 Rotary-N).......................................................19
2.6 Ductwork connection..............................................................................................23
2.7 Condensate drain connection.................................................................................23
2.8 Connecting hot-water heating coil to a heating water supply..................................24
2.9 Connecting water cooling coil to a chilled water supply..........................................24
2.10 Connecting direct-expansion cooling coil................................................................25
2.11 Installation of manometers for constant flow and constant pressure.......................25
2.12 Installation of liquid manometers............................................................................25
2.13 Covering the slots (semicompact units only)...........................................................25
2.14 Fitting air filters.......................................................................................................26
3Electrical wiring............................................................................................ 26
3.1 General rules..........................................................................................................26
4Commissioning............................................................................................. 27
4.1 Safety rules............................................................................................................27
4.2 Hygienic instructions for the appliance to comply with VDI 6022 ............................27
5Access to the unit using the internet.......................................................... 28
6Disposal of package and disused unit........................................................ 28
7Connecting blocks of semicompact units using connectors, annex....... 29
7.1 Connecting fans and propulsion of the rotary heat exchanger................................29
7.2 Connecting temperature sensors............................................................................30
7.3 Connecting pressure sensors.................................................................................31
7.4 Connecting servo motors........................................................................................32

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1Storage and transport
●The appliance may only be stored in dry, covered places with ambient temperature between
-25 °C and +55 °C in such a manner so as to keep the surfaces that will be in contact with
transported air weather-protected, dry and clean.
●The packaging may only be removed immediately before the installation of the appliance in its
final position. Otherwise it is necessary to check all parts for cleanliness before installation and
clean the parts carefully if needed.
●The equipment must contain no operating fluids (e.g. water in heating or cooling coil) during the
storage and transport.
●During transportation the appliance must be protected against mechanical damage and leaking
water and all holes must be covered with protective lids. The same applies when the appliance is
transported disassembled.
●Secure the equipment against falling during the transport. Also, the transport method should
prevent risk of falling or loosening the equipment.
●It is prohibited to carry out activities such as grinding, welding, cutting and other ancillary works
near the unit that could irretrievably damage the surface or individual parts of the unit.
Use only appropriate lifting machines such as fork lift truck, crane with a lifting bar, palette truck.
It is necessary to secure the unit in a stable position prior to any manipulation or transport of the
unit. The unit must be secured to prevent the unit from falling down or tipping over.
1.1 Transport of compact units
Compact units are understood as units that are placed in one compact casing: 1500 – 5000 Rotary(-N).
The only manipulation methods allowed:
Lift the units as one compact piece. Tie up the units from beneath before lifting them. The units are
equipped with holes through which the rope can lead.
Minimum fork distance 800mm
Handles on the side of the device are intended for
shipping and manipulation with units only!

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1.2 Transport of semicompact units
Semicompact units consist of three blocks that form the unit once they are connected together. This
applies on units 8000-15000 Rotary(-N).
Lift the units in blocks, one after another. The blocks of units are equipped
with rabbets where the rope can lead. Tie up each block from underneath and
use bars before lifting the blocks.
2Safety and hygienic instructions
2.1 Safety instructions
●Environment of unit installation
oIndoor version (Rotary): temperature between +5°C and +55°C, relative humidity of air up to
60%(60% relative humidity at 20°C).
oOutdoor version (Rotary-N): temperature between -25°C and +55°C, relative humidity is
not limited.
●Protection of the unit’s internal components from getting cold when the unit is not working is to be
provided by a mechanical backflow damper (or by a damper with a servo drive) in i2 (EHA) ducting.
●The appliance may be operated within the temperature range:
oFresh air supply (ODA) from -25°C to +40°C, relative humidity is not limited (except for the
conditions in the Chapter 2.2 bullet point 2).
oExtract stale air (ETA) from +10°C to +40°C and relative humidity up to 80%.
●The appliance must be operated in an environment where there is no risk of fire or an explosion of
flammable gases and fumes, and air transported must not contain organic solvents or aggressive
substances that might damage mechanical parts of the unit. If there is a danger of such gases and
fumes temporarily entering the duct system (e.g. during floor bonding, painting), the unit must be
switched off sufficiently in advance.
●Make sure that casing of the unit does not get damaged or deformed.
●After placing the equipment make sure its position is stable; secure the equipment against possible
movement.
●Follow all work safety rules during the manipulation and installation work (including safety rules for
work in heights and lifting weights), use proper tools and protective clothing.
●Only a qualified person may operate the lifting equipment and binding tools.
●Appliances with hot water heaters
oMust be permanently connected to power supply to provide for the anti-freeze protection of
the hot water heater. In the case of a prolonged power outage the heating medium must be
drained from the hot water heater including the control set. We recommend draining water
from the heater with pressurized air, not using a gravity flow!
oMay only be operated if the heating system including the hot water heater and control set are
filled with a heating medium, air bled and connected to a source of warm water; also applies
to periods outside the heating season! In case the heating system including the hot water
The bars must be wider
than the unit itself.
Rabbet for leading the rope when tying up
the block from underneath
Blocks of semicompact unit

6
heater and control set are not filled with a heating medium, the remaining heating medium
must be drained; the appliance must be dried properly and disconnected from power supply.
2.1.1 Prior to installation please check:
●Completeness of the delivery;
●The delivered unit has not been damaged in transport, manipulation and storage;
●The heat exchanger can revolve (check by hand); applies to exchanger delivered as assembled;
●Parameters of electricity supply network;
●Main power parameters that are needed for the unit to operate as intended;
All deviations from the standard and defects must always be remedied prior to installing the unit.
2.1.2 Prior to the first putting into operation please check:
●The tension of the belt;
●Disassemble fixing elements in case the rotary wheel is secured for transport;
●Make sure that rotating and static parts being adjoin are clean (clean these thoroughly especially
from metal shavings and wooden sawdust);
●The rotary wheel can rotate freely;
●The sealing elements of rotary wheel are placed correctly (brushes, felt);
●Connections to the air handling, air ducts or building construction;
●Electrical installation;
●The overcurrent protection of electromotor must be set to the value that is lower than the value of
the current stated on the label.
2.1.3 When launching the unit for the first time please check:
●The rotary wheel rotates in correct direction; correct direction of rotation is indicated by an arrow
placed on the heat exchanger;
●Current consumption (it must not exceed the value stated on the label of electro motor).
When these conditions are met the heat exchanger can be put into trial operation.
2.2 Hygienic instructions and requirements
●If installation is interrupted or heavy dusting occurs,
cover all openings of the appliance in such a way so as
to ensure that surfaces to be in contact with transported
air remain protected against the weather and stay clean
and dry.
●If long-term high relative humidity (short-term more than
90 % or more than 80 % for three consecutive days) is
likely to occur with the subsequent moistening of filters
(e.g. in areas with frequent fogs, frequent and long
rains, flying snow etc.), suitable measures must be
taken to prevent microbiologic growth. Recommended
measures include more frequent hygienic checks as
per VDI 6022 or shorter filter replacement intervals. The unit must not suck pollutants
Another option is the preheating of air using an
appropriate control devices (electrical duct heaters are available as accessory), or the appliance
must be put out of operation for the period when filters are at the risk of moistening (if the type of
operation allows this).
●Should such weather conditions occur at the site of installation that would cause the dew point to be
exceeded in the supply air region of the heat recovery exchanger, or an independent cooling
system is installed in ventilated rooms, Duplexvent units may only be used provided that it has been
arranged via appropriate measures that the dew point is not exceeded in the heat exchanger. The
typical weather of central Europe makes this condition almost impossible.
●The e1/ODA air supply chamber has no water drain. An accessible and cleanable chamber with a
drain of precipitated water must be installed upstream the outdoor air inlet into the appliance.
●The HVAC network of appliances operated in an environment with Class ETA 2 extract air must be
arranged for operation in such a way so that positive pressure is on the supply air side of the heat
recovery unit; in an environment with Class ETA 3 extract air must be arranged for operation in

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such a way so that positive pressure is on the supply side in comparison to the exhaust side. This
must be ensured under all operating conditions of the system. For more details see EN 13779.
●Unpack and install air filters in the last step, just before putting the appliance into operation. You
will prevent the filtersfrom getting dirty.
●Air duct including accessories with autonomous regulation of operation is to be connected on the
fresh air supply. Such duct will, in compliance with the regulation VDI 6022, provide for appropriate
treatment of supplied fresh air to prevent air filter from getting wet. In case the duct is not
connected or if it does not include such accessory, the appliance is to be put out of operation as
long as the risk of air filters to get wet persists (thick fog, snowing).
ÜIn compliance with hygienic standard VDI 6022 HVAC systems must be equipped with shut-off
dampers to ensure the automatic closure of the system so that air cannot flow freely through the
system. We recommend using shut-off dampers available as an accessory. It is the responsibility
of the planner / specialist installation company to comply with this requirement.
ÜDuplexvent series appliances have a single-stage filtration system. Appliances in a hygienic version
in compliance with hygienic standard VDI 6022 must have a Class F7 / ePM1 50% filter fitted on
the inlet; applies to outdoor air (e1/ODA) class ODA 1 and ODA 2. When outdoor air is Class 3, an
M5 / ePM10 50% Class filter must be fitted in the duct upstream the outdoor air inlet into the HVAC
unit; alternatively, an M5 / ePM10 50% Class filter may be installed in the HVAC unit and a Class
F7 / ePM1 50% filter in the duct at the e2/SUP outlet from the unit. Note: M5 / ePM10 50%and F7 /
ePM1 55% filters are available as accessories.
ÜAppliances in a hygienic version in compliance with hygienic standard VDI 6022 may be operated
only if the use of recirculating air is suitable for hygienic reasons or the arrangement of operation of
the HVAC network ensures positive pressure in the supply section of the appliance against the
extraction section.
2.3 Description of units Rotary and Rotary-N
Duplexvent Rotary and Rotary-N represent a new generation of ventilation units with rotary heat
exchanger. Units Rotary (indoor version) and Rotary-N (outdoor version) are used for comfortable
ventilation, hot-air heating and cooling in small and large facilities, shop floors, stores, schools,
restaurants, shops, sports and industrial halls. Units Rotary and Rotary-N meet requirements of
Commission Regulation (EU) No. 1253/2014 (Ecodesign) in the defined working area.
Rotary unit
Key:
1. Intake (supply air)
2. Intake flap (supply air)
3. Supply air filter
4. Rotary heat exchanger
5. Junction box
6. Water cooling / direct evaporator
7. Water heating
8. Supply fan
9. Exhaust (supply air)
10. Exhaust (extract air)
11. Exhaust fan
12. Circulation flap, 1500-5000 Rotary(-
N)
13. Circulation flap, 8000-15000 Rotary(-
N)
14. Condensate drain
15. Exhaust air filter
16. Intake flap (extract air)
17. Intake (extract air)
15 16 1711 12 141310
7 8 92 3 641 5

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Rotary-N unit
2.4 Installation of compact units
1. Make sure that the surface of the intended placement of the unit is even;
2. Place the unit on the surface, keep the recommended manipulation space;
Duplexvent 1500 – 5000 Rotary
Type Duplexvent Rotary Standard door T (mm)
Duplexvent 1500 and 2500 Rotary 900
Duplexvent 4000 and 5000 Rotary 1200
Key:
1. Intake (supply air)
2. Intake flap (supply air)
3. Roof
4. Supply air filter
5. Rotary heat exchanger
6. Water cooling / direct evaporator
7. Water heating
8. Supply fan
9. Exhaust (supply air)
10. Exhaust (extract air)
11. Exhaust fan
12. Circulation flap, 1500-5000 Rotary(-
N)
13. Circulation flap, 8000-15000 Rotary(-
N)
14. Junction box (on the rear side)
15. Condensate drain
16. Exhaust air filter
17. Intake flap (extract air)
18. Intake (extract air)
7 8 92 3 641 5
15 16 1711 12 141310 18
*) Only configuration with integrated
cooler

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Duplexvent 1500-5000 Rotary-N
3. Level the casing of the unit horizontally, adjust the stand feet as needed (part of delivery).
The base frame of the unit must not be disassembled or modified in any way – there is a risk of
mechanical damage to the unit.
In case the unit is to be fastened to the roof we recommend
using fastening elements (included in the delivery)
Type Duplexvent Rotary Standard door T (mm)
Duplexvent 1500 Rotary 900
Duplexvent 2500 Rotary 900
Duplexvent 4000 Rotary 1200
Duplexvent 5000 Rotary 1200
*) Only configuration with integrated
cooler
F
astening element to connect
base
frame with the roof or unit with the roof.

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2.5 Assembly of semicompact units
The following steps describe the assembly of unit with the configuration of blocks and ports in the
picture below. The way of connecting wires between blocks via wiring boxes is described in the
Chapters 2.5.4 to 2.5.7. The alternative way using connectors is described in the Chapter 7.
2.5.1 Assembly of blocks
1. Make sure that the surface of the intended placement of the unit is even.
2. Mount adjustable members on all stand feet (part of delivery). Screw the adjustable
members into approximately half of their height.
3. Place the blocks on the surface, keep the recommended manipulation space.
Duplexvent 8000 – 15000 Rotary (indoor version)
Type Duplexvent Rotary Standard door T (mm)
Duplexvent 8000 Rotary 1600
Duplexvent 12000 Rotary 1800
Duplexvent 15000 Rotary 2000
*
*
*
1
2
3
Example of semicompact unit Rotary-N
Key:
1,2,3 – unit blocks
e1 - Intake (supply air)
e2 - Exhaust (supply air)
i1 - Intake (extract air)
i2 - Exhaust (extract air)
*) Only when water heater or chiller is installed
**) Only when integrated chiller is installed

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Duplexvent 8000 – 15000 Rotary-N (outdoor version)
*) Only when water heater or chiller is installed
**) Only when integrated chiller is installed
4. Make sure that the sealing on the middle block 2 is complete on the side both towards the blocks
1 and 3:a. Sealing all around the block;
b. Sealing all around the top inlet of the block
c. Sealing all around the bottom inlet of the block
Type Duplexvent Rotary-N Standard door T (mm)
Duplexvent 8000 Rotary-N 1600
Duplexvent 12000 Rotary-N 1800
Duplexvent 15000 Rotary-N 2000
Sealing all around the
block
Sealing all around the
top inlet of the block
Sealing all around the
bottom inlet of the
block
Side view of the block 2
with sealing attached
*
*
*

12
5. Place the blocks next to each other and make sure they are all levelled. Adjust the stand feet as
needed. Using the spirit level make sure that the blocks 1, 2 and 3 are levelled in all three axes x,
yand z.
Open the door only after making the blocks even at least in the axes x and y. Failing to do
so may cause irreversible bending of the door.
6. Tighten the lower part of blocks 1 and 2 by using M8 bolts slightly together. Use triangle members
in inner corners.
7. Slightly tighten the upper part of blocks 1 and 2 using M8 bolts and nuts.
x
y
z
1
2
3
Levelling the blocks of the unit
Connecting blocks 1, 2 and 3
1
2
2
3

13
8. Gradually tighten the connections. Using the spirit level make sure that the blocks being
connected remain levelled.
9. Once you connect the blocks 1 and 2 the sealing between the blocks should be adhering to the
construction of blocks along the whole length of the sealed connection. Make a visual check to
make sure that no light passes through the connection of the blocks.
10. Repeat the steps 5 through 8 and connect the blocks 2 a 3.
11. Using the spirit level make sure that the connected blocks still remain levelled.
M8
1
2
3
Tightening the unit blocks together

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2.5.2 Description of assembled unit
Duplexvent 8000 – 15000 Rotary-N
1. Filter manostat PFe
2. Intake (supply air)
3. Shut-off flap (supply air) Se*)
4. Temperature sensor TEA
5. Supply air filter
6. Heat exchanger
7. Water cooling / direct evaporator *)
8. Water heating *)
9. Mixing valve *) **)
10. Water heater pump *) **)
11. Capillary thermostat TFK *)
12. Temperature sensor TU1
13. Manometer of supply fan PMe *)
14. Supply fan Me
15. Exhaust (supply air)
16. Exhaust (extract air)
17. Exhaust fan Mi
18. Manometer of exhaust fan PMi *)
19. Temperature sensor TU2
20. Circulation flap SC *)
21. Condensate drain *)
22. Exhaust air filter
23. Temperature sensor TEB
24. Filter manostat PFi
25. Shut-off flap (extract air) Si *)
26. Intake (extract air)
27. Junction box
*) Optional equipment
**) On Rotary-N units placed on the rear
side
16 17 2019 21 22 2423 25 2618 27
1 2 43 5 76 8 9 1210 14 1511 13

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Duplexvent 8000 – 15000 Rotary-N, rear view
Key1. Mixing valve *)
2. Water heater pump *)
3. Hood with droplet eliminator *)
4. Exhaust (extract air)
*) optional equipment
2.5.3 Manipulation with door on the roof
•Handle the door on the roof very carefully, especially when gusts of wind are imminent, to
avoid any injury.
•When opening an outdoor unit, secure the door using securing eyelets; join these together
using rope or any other tying mechanism.
•After removing the door, place it on the roof of the building. The door must always be secured
using rope (tying mechanism).
1. Securing eyelet must be tied using a tying mechanism
(rope) -> the door is secured in case of wind
1
1 2 43
2
2. We shorten and tighten the rope to the desired
length to fit into the required manipulation area.
Door
Unit

16
2.5.4 Connecting fans and propulsion of rotary heat exchanger
Connected on delivery:
•Fan Me is completely connected up to the junction box.
•Fan Mi is connected to the wiring box.
Connect:
●Lead the cable Mi with the working voltage 400V from the junction box into the wiring box.
●Lead the cable Rotary from the junction box into the wiring box.
= cable comes connected on delivery
= cable is to be connected
You will learn how to connect the wires in the wiring box after opening up the box.
2.5.5 Connecting temperature sensors
Connected on delivery:
●Sensors TEB and TU1 are completely connected up to the junction box.
Connected on delivery, optional equipment:
●Sensor TFK is completely connected up to the junction box.
Connect:
●Lead the cables TEA and TU2 with temperature sensors from the junction box into their intended
position;
Mi
Me
Rotary
Connection of fans and propulsion of rotary heat exchanger

17
2.5.6 Connecting pressure sensors
Connected on delivery:
●Manostat PFi is completely connected up to the junction box;
●Manostat PFe is connected to the wiring box.
Connected on delivery, optional equipment:
●Manometer PMe is placed in a wiring box that is connected to the junction box;
●Pressure measurement point PDi measuring the pressure increase of the fan Mi is installed on the
left side of the unit. Pressure measurement hoses are installed.
●Pressure measurement point PDe measuring the pressure increase of the fan Me is installed on
the right side of the unit. Pressure measurement hoses are installed.
Connect:
●Lead the cable E1 into the wiring box from which the manostat PFe and a flap Se are powered.
The wiring box is located in the upper part of the block 3.
Connect, optional equipment:
●Lead the cable PMi from the junction box into the wiring box of manometer PMi. The wiring box is
located in the lower part of the block 3;
Connecting temperature sensors
TU2
TU1TFKTEA
TEB

18
2.5.7 Connecting servo motors
Connected on delivery, optional equipment
●Both parts of the circulation damper (SC) are connected to the junction box.
●The circuit of cooler CHW is connected to the hydraulic kit.
●The circuit of heater Tis connected to the hydraulic kit.
●Hydraulic kit LS controlling water chiller or heater is located on the top side of the unit (indoor
version Rotary) or on the back side of the unit (outdoor version Rotary-N). The kit is completely
connected up to the junction box.
●Water pump LP in the heating circuit is located on the top side of the unit (indoor version Rotary)
or on the back side of the unit (outdoor version Rotary-N). The kit is completely connected up to
the junction box;
●Shut-off flap Si is completely connected up to the junction box;
●Shut-off flap Se is connected to wiring box.
Connect, optional equipment
●Lead the cable E1 to the wiring box from which the manostat PFe and the flap Se are powered.
The wiring box is located in upper part of the block 3. If the unit is equipped with manostat PFe,
you have already connected the cable in the Chapter 2.5.6.
Connecting pressure sensors
PMi
PDePMe
PFe
PFiPDi
2
3
1

19
2.5.8 Roof assembly (only 8000-15000 Rotary-N)
1. Make sure that the unit is still levelled as described in the Chapter 2.5.1.
Protect the unit from adverse weather conditions until the roof assembly is finished.
SC
LPLSSe
Si
TCHW
2
3
1
Connecting servo motors

20
2. Put the roof blocks on the top side of unit casing. The length of roof blocks corresponds with the
length of unit blocks.
3. Fix the roof blocks together, use 8 screws M6, place waterproof washers (part of delivery) under
the screws.
1
2
3
1
2
3