Airflow DUPLEXBASE PS 650 User manual

AIR-HANDLING UNITS
DUPLEXBASE PS 650, 1100,
1700, 2300,
3500, 4500, 6000
Installation manual
Version: 10
Issue: 2022_03
Part no: 80001258 – Issue 1 12/22

2

3
Dear customer,
Thank you for choosing our product and we hope that you will be fully satisfied.
This manual contains all necessary instructions, information, hints and recommendations for safe and
correct equipment installation and commissioning. Please read the manual carefully and follow the
instructions contained herein.
Symbols explained
Items or sections marked with (or with a grey background) apply only to appliances manufactured in
compliance with the hygienic requirements of Regulation VDI 6022 (indicated on the identification
plate, see following chapters).
Important notices
•Electrical connections, commissioning and adjustment of the appliance may only be
carried out by qualified electrical engineers.
•Before the installation and commissioning of the appliance carefully read the installation,
use and maintenance manual, the controller operation manual and, where applicable, the
service documentation.
•The appliance and all its accessories must be installed and used in compliance with the
design, technical conditions specified by the manufacturer and applicable legislation and
technical standards in effect.
•The appliance may not be installed and operated in an aggressive environment that could
damage its external and internal mechanical parts.
•Before putting the appliance into permanent operation an initial inspection report on the
appliance´s power supply must be provided.
Before putting the appliance into operation an approval test (see VDI 2079 and DIN EN
V 12599) of the entire HVAC system must be conducted. The test must include the
examination of hygienic requirements as per VDI 6022 and must be documented
appropriately. The user must be able to present the approval test report at any time. If the
above requirements are not met, the manufacturer cannot ensure compliance with hygienic
requirements.
The manufacturer is not liable for damage caused by unprofessional installation and
operation that is not in compliance with the operation and maintenance manual and
general practices applied during installation and operation of HVAC equipment and
control systems.

4
Contents
Contents ..................................................................................................... 4
1. Safety instructions ............................................................................ 5
1.1. General safety ....................................................................................... 5
1.2. Operational safety ................................................................................. 5
2. Storage and transport ....................................................................... 6
3. Description ......................................................................................... 7
3.1. General.................................................................................................. 7
3.2. Intended use.......................................................................................... 8
4. Installation .......................................................................................... 9
4.1. Safety instructions ................................................................................. 9
4.2. Hygienic instructions and requirements................................................. 9
4.3. Configuring orientation of the unit.......................................................... 9
4.4. Identification of ports ........................................................................... 11
4.5. Connecting the HVAC duct.................................................................. 11
4.6. Installation ........................................................................................... 12
4.6.1. Manipulation space .......................................................................................12
4.6.2. Inclination of the unit .....................................................................................13
4.7. Connecting the condensate drain pipe ................................................ 15
4.8. Outdoor installation.............................................................................. 17
4.9. Classification of air filters..................................................................... 17
4.10. Installing air filters................................................................................ 17
4.11. Installing, connecting and filling liquid manometers............................. 18
4.12. Installing hot water heating coil ........................................................... 19
4.13. Installing mixing valve of hot water air heater...................................... 21
4.14. Installing shut-off dampers e1 (ODA), i1 (ETA) ................................... 21
4.15. Installing flexible flanges...................................................................... 21
4.16. Installing and connecting the water chiller to the cooling source ......... 21
4.17. Installing the mixing valve of the water chiller...................................... 22
4.18. Installing direct chiller .......................................................................... 22
4.19. Installing integrated electrical preheater .............................................. 22
4.20. Installing external electrical preheater/heater EPO-V .......................... 22
4.21. Installing manometers to control constant flow and constant pressure 22
5. Electrical connection, commissioning.......................................... 22
6. Access to the unit using the internet ............................................ 23
7. Hygienic instructions for compliance with VDI 6022................... 23
7.1. General instructions............................................................................. 23
7.2. Required qualifications of personnel as per the type of activity ........... 24
8. Package disposal, recycling........................................................... 25
9. Repairs, spare parts ........................................................................ 25
10. Warranty ........................................................................................... 25
11. Visual appendix - manuals ............................................................. 26
11.1. Connecting the condensate drain line ................................................. 26
11.2. Fitting the filters ................................................................................... 27

5
1. Safety instructions
1.1. General safety
•Only adults sufficiently familiar with the operation and maintenance manual may operate the
equipment.
•The user must not tamper with or modify any part of the equipment, particularly the power supply
wires!
•Only professional service technicians with relevant qualifications may perform equipment repairs.
Unprofessional repairs are risky and may result in loss of warranty.
•Before opening the equipment´s door for cleaning, filter replacement or general maintenance
always make sure that the equipment is disconnected from the power supply and prevent its
reconnection by another person.
•To prevent injuries caused by the fan wheel, a duct at least 2 metres long must always be
connected to the fan discharge. The duct must be fastened in such a way that it cannot be
removed without tools.
•If the equipment has been out of operation for a prolonged period of time, extra care should be
taken when putting it back into operation.
1.2. Operational safety
•The unit is intended for a basic environment:
oindoor version: ambient temperatures between +5 and + 55 °C with relative humidity up to
60 % (60 % relative humidity up to 20°C).
ooutdoor version: ambient temperatures between -25°C and +55°C, relative humidity is not
limited.
oIf the appliance is located elsewhere, its sufficient protection must be ensured. The appliance
can only be operated in an environment where there is no risk of fire or an explosion of
flammable gases and fumes
•The appliance may be operated within the temperature range of ventilation air between -25°C and
+40 °C with relative extraction air humidity up to 80%. The transported air must not contain
oexplosive flammable gases and fumes,
oorganic 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, or painting), the unit must be switched off sufficiently in advance.
•In the event of a failure the appliance must be disconnected from the power supply as soon as
possible!
•The water chiller in all versions must be filled with an antifreeze solution with sufficient thermal
resistance, or it must be drained for the period during which outdoor temperature might fall below
+5°C. We recommend draining water from the chiller with pressurized air, not using a gravity flow!
•Appliances with hot water heaters
oMust be permanently connected to the power supply to provide 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!
oIt may only be operated if the heating system including the hot water heater and control set
are filled with a heating medium and air bled; also applies to periods outside the heating
season! In case the heating system including the hot water heater and control set are not filled
with a heating medium, the appliance must be drained of the remaining heating medium, dried
properly and disconnected from the power supply.
•The appliance is designed for environments with Class ETA 1 extract air; in environments with
extract air Class ETA 2 and ETA 3 it is necessary to comply with conditions specified in chapter
4.2.

6
2. Storage and transport
•The appliance may only be stored in dry, covered places with ambient temperatures between -25
and 55 °C in such a way that its surfaces that are to be in contact with transported air remain
protected against the weather and stay dry and clean.
•Packaging may not be removed until immediately before the installation of the appliance in its
operating position. If that is not the case, all parts must be checked for cleanliness before
installation and thoroughly cleaned if necessary.
•The appliance must not contain any operational liquids (e.g. water in the hot water heater, water
chiller, etc.) during storage and transport.
•The appliance may only be transported on handling blocks (included). During transportation, the
appliance must be protected against mechanical damage and water penetration and all openings
must be covered with protective covers.
•During transportation, the appliance must be secured against falling. The mode of transport must
also eliminate any falls of the appliance or instances of the appliance getting loose.
•Activities near the unit such as grinding, cutting and other ancillary works that could irretrievably
damage the surface or individual parts of the unit are prohibited.
•The unit casing is protected by a transparent foil from the production. Remove the foil at an
ambient temperature higher than +5°C to avoid the hazard of damaging the metal sheet surface.
Solely permitted methods of handling
Transport of unit by crane
650 – 3500 DUPLEXbase PS 4500 and 6000 DUPLEXbase PS
Lifting straps
Support blocks
minimum fork spacing 800 mm
The bars must be wider than
the unit itself.
> 9m

7
Mount the roof of the unit after placing the unit in the final installation location.
3. Description
3.1. General
DUPLEXbase PS ventilation units with heat recovery are compact appliances containing two
independently powered fans with flexibly mounted motors, a highly efficient heat recovery exchanger
assembled from thin-walled plastic boards for the recovery of heat/cool, a by-pass damper, slide-out
filters and drainage trays, and depending on accessories selected also an external heater, chiller,
shut-off dampers, flexible flanges and a control system.
Units can be installed in indoor and outdoor environment. Indoor, DUPLEXbase PS units can be
installed as floor-standing (650 DUPLEXbase PS – 6000 DUPLEXbase PS) or ceiling suspended (650
– 3500 DUPLEXbase PS). Outdoor, the units can be installed as floor-standing (650 DUPLEXbase PS
– 6000 DUPLEXbase PS).
650 and 1100 DUPLEXbase PS
Outlet hood *), exhaust air
8. Inlet hood with raindrop eliminator *), outdoor air
Exhaust fan
9. Supply air filter
Roof of the unit *)
10. Condensate drain
Bypass of heat recovery core
11. Heat recovery core
Junction box
12. Extract air filter
Main switch
13. Intake (extract air)
Supply fan
235671
910 11 12 138
4

8
*) Accessories for outdoor installation
1700 to 6000 DUPLEXbase PS
Outlet hood *) , exhaust air
8. Inlet hood with raindrop eliminator *), outdoor air
Exhaust fan
9. Supply air filter
Roof of the unit *)
10. Bypass flap
Main switch
11. Condensate drain
Junction box
12. Extract air filter
Heat recovery core
13. Intake (extract air)
Supply fan
*) Accessories for outdoor installation
3.2. Intended use
DUPLEXbase PS ventilation units with heat recovery are intended for the comfort ventilation and
possibly hot-air heating and cooling of flats and houses, small plants, workshops, schools, restaurants,
cooking facilities and industrial halls with a basic environment. The use of the unit must be in
compliance with the Regulation of the Commission (EU) 1253/2014. If the appliance is used for
different purposes or it is not operated in compliance with instructions contained in the operation and
maintenance manual, the manufacturer is not liable for resulting damages.
235671
910 11 12 138
4

9
4. Installation
4.1. Safety instructions
•During installation make sure no damage or deformation is caused to the case of the appliance
(e.g. as a result of handling operations).
•After setting the appliance in place check it for stability and secure it in this position against
moving.
•During handling and installation observe all rules of safe work (including work at heights and work
with suspended loads) and use appropriate work and safety equipment.
•Lifting and binding equipment may only be operated by trained personnel.
4.2. 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. Another option is the preheating of air using
an appropriate control device (electrical duct heaters are an available accessory), or the appliance
must be put out of operation for the period when filters are at 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, DUPLEXbase PS units may only be used provided that it
has been arranged via appropriate measures that the dew point will not be exceeded in the heat
recovery 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 of 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 such a way so that positive pressure is on the supply side against the exhaust side. This must
be ensured under all operating conditions of the system. For details see EN 13779.
In 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 no air can flow freely through the
system. A damper shutting off the supply of outdoor air (ODA) must be thermally insulated. Using
shut-off dampers available as an accessory is recommended. Compliance with this requirement is
the responsibility of the planner/specialist installation firm.
DUPLEX series appliances have a single-stage filtration system. Appliances in a hygienic version
in compliance with hygienic standard VDI 6022 must have at least Class ISO ePM1 50% (F7) filter
fitted on the inlet (applies to outdoor air e1/ODA Class ODA 1 and ODA 2). When outdoor air is
Class 3, a Class ISO ePM10 50% (M5) filter must be fitted in the duct upstream the outdoor air
inlet into the HVAC unit; alternatively, a Class ISO ePM10 50% (M5) filter may be installed in the
HVAC unit and a Class ISO ePM1 50% (F7) filter in the duct at the e2/SUP outlet from the unit.
Note: air filters ISO ePM1 55% (F7) and ISO ePM10 50% (M5) are separately supplied
accessories.
Appliances 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.
4.3. Configuring orientation of the unit
The versatile design of sizes 650, 1100, 1700, 2300, 3500, 4500 and 6000 allows adjusting the
orientation of the appliance; it can be configured which fan will be delivering the supply air and extract
air. The orientation of the unit must be configured once the unit is switched ON for the first time.

10
1. Open the door of the unit. Check the labels on the fans to learn which fan is marked M1 and M2.
2. Connect the control panel CP Touch to the unit. Turn the unit ON. The control panel will report an
error by showing a yellow triangle on the top of the display.
3. Click on the symbol of the error. The control panel will display the message Orientation is not set.
4. Proceed back to the default screen, and click on the cogwheel in the bottom left corner.
5. Click on the Settings symbol in the top right corner.
6. Enter the service menu password. The password is available to authorized partners.
7. Proceed to parameter 3.2.2 on the control panel. Set up the fan M1 or M2 as M-SUP (supply fan).
The operation of the unit is blocked until the parameter MSUP is configured to M1 or M2.
By default, the unit is equipped with filters of different filtration classes. Make sure the filters are
placed correctly according to the orientation of the unit. For more information see Chapter 4.10.
DUPLEXbase PS 650 and 1100
M2
M1
Unit
650 or 1100 Flexi, fan M2 is configured
as supply fan (M-SUP).
Unit 650 or 1100 Flexi, fan M
1 is configured
as supply fan (M-SUP).
M1
M2

11
DUPLEXbase PS 1700 - 6000
4.4. Identification of ports
Identify and label individual ports using the pictures below (labels are included). Begin by identifying
port e1 (ODA) - outdoor air inlet; continue toward the fan on the same (shorter) side of the unit with
exhaust air outlet port i2 (EHA); next is the port with fan on the opposite side of the unit - supply air
outlet e2 (SUP); the last (remaining) port is extract air inlet port i1 (ETA).
Note: Depending on a specific location of the unit proceed clockwise or anticlockwise.
4.5. Connecting the HVAC duct
•Connect the HVAC duct following the design documentation.
•A straight duct being at least 1 meter long must be connected to both outlet ports. This will ensure
that an equal air speed profile is achieved throughout the whole port’s cross-section area and unit
achieves performance levels stated by the manufacturer.
•The duct connected to inlet ports must be arranged in a way allowing a uniform flow rate in the
entire cross section of inlet ports.
•To prevent injuries caused by the fan wheel, an HVAC duct at least 2 metres long must always be
connected to the outlet of supply air e2 (SUP) and outlet of stale air i2 (EHA). The duct must be
fastened in such a way that it cannot be removed without tools.
Outdoor installation of DUPLEXbase PS
•If there is a risk of short-circuit between the exhaust of stale air i2 (EHA) and intake of fresh air e1
(ODA) a duct being at least 3 m long must be connected to the outlet port i2 (EHA). As an
alternative, hoods at e1 (ODA) and i2 (EHA) ports can be used; these are provided as optional
accessories.
Units 1700-6000 Flexi, fan M1 is configured
as supply fan (M
-SUP).
M1
M2
Units 1700-6000 Flexi, fan M2 is configured
as supply fan (M-SUP).
M2
M1

12
4.6. Installation
•Before installation remove the wooden transport planks.
•The versatile design of DUPLEXbase PS allows both indoor (floor-standing, ceiling-suspended)
and outdoor installation (floor-standing), see Chapter 3.1 for more information.
•Fit the appliance in such a way that the prescribed handling spaces are observed:
4.6.1. Manipulation space
Floor standing position Outdoor installation
Ceiling-suspended position

13
4.6.2. Inclination of the unit
Floor standing position and outdoor installation
•The appliance is placed on height-adjustable feet included in delivery (4 pieces in sizes 650 and
1100, 6 pcs in sizes 1700 to 6000). Use the adjustable bases of the feet to level uneven ground.
•To achieve correct condensate drainage slope the appliance as follows:
•650 and 1100 DUPLEXbase PS: Slope the longer side of the casing 3% towards the
condensate drain located at i2 (EHA). Level the shorter side of the casing horizontally.
•1700 – 6000 DUPLEXbase PS: Level both the longer and shorter side of the casing
horizontally
Adjustable bases of stand feet must remain fully screwed into the feet while manipulating with the
unit. Adjust the height of the stand feet after putting the unit into its final installation position only.
Failing to do so may cause irreversible damage to the stand feet.
•The unit must be secured against movement.
DUPLEXbase PS
650
1100
1700
2300
3500
4500
6000
T1 filter replacement (mm)
320
320
500
500
500
500
500
T2 service access (mm)
300
500
500
600
800
1000
1300
T3 minimum space,
lower ceiling cover (mm)
375
480
560
685
880
1090
1395

14
Floor-standing installation Outdoor installation
Ceiling-suspended position:
•Ceiling-suspended position is available for 650 – 3500 DUPLEXbase PS.
•The appliance is suspended from anchors of sufficient load bearing capacity (provided by the
building contractor) using four suspension brackets (included in delivery) with Ø11 mm holes.
•To achieve correct condensate drainage the appliance must be sloped towards section i2 (EHA),
see the picture:
M10
M6

15
The number and distance of suspension points is detailed in the selection software under Design >
AHU placement method, as well as in the technical specification that forms an integral part of
purchase contract on the ventilation unit.
4.7. Connecting the condensate drain pipe
•The unit is versatile and in total has 4 condensate outlets for 2 directions of air flow in 2 installation
positions. A single specific condensate outlet is always used for a particular application.
•Seal condensate drains that are not used.
Floor-standing position and outdoor installation
650 – 1100 DUPLEXbase PS: Use the condensate outlet in section e1 (ODA). Keep the condensate
drain in section i1 (ETA) sealed.
2
3
4
5
1
Description:
1. Screw rod M10 *)
2. Suspension bracket
3. Silent block *)
4. Washer M10 *)
5. Nut M10 *)
*) Not included in the delivery

16
1700 – 6000 DUPLEXbase PS: Use the condensate outlet in section i1 (ETA). Keep the condensate
drain in section e1(ODA) sealed.
In outdoor installation use heating of condensate drain that is supplied as optional accessory. See
Chapter 11.1 for more information.
ℎ1=∆
10 +50 []
ℎ2=∆
2∙10 +50 []
ℎ= 1,5 ∆
10 +100 []
Δp – maximum positive / negative working pressure in the compartment of the unit. The height of
condensate drain pipe h = 15 cm is sufficient for all installations.
Ceiling-suspended position
•Use the condensate outlet in section i2 (EHA), see picture in the Chapter 11.1.
•Connect a pipe or hose (not included; a standard washing machine hose is recommended) to the
condensate outlet and shape it into a siphon trap with dimensions as shown in the picture.
Appropriately secure the siphon trap shape and connect it to the sewer line.
•Check the entire length of the pipe including the parts inside the unit for free passage and its
sloping.
•Prime the condensate drain siphon trap.
Condensate pump is alternative to water trap. It minimizes the manipulation
space needed for condensate drainage. It is available as optional accessory.

17
4.8. Outdoor installation
To install the DUPLEXbase PS 3 unit in an outdoor environment, use the following accessories. The
elements are depicted in Chapter 3.1.
•Unit roof; the following elements are also delivered along with the roof:
oSquare extension to keep the main switch available also when roof is
installed;
oSafety elements to fasten stand feet of the unit to the roof;
oElement to secure the unit against movement, see Chapter 4.6.2
•Heated condensate drain;
•Droplet eliminator and hood at the port e1 (ODA);
•Hood at the port i2 (EHA).
The accessories installation guides will be delivered with the accessories.
If you use ductwork instead of hoods please follow the rules on duct installation, Chapter 4.5;
4.9. Classification of air filters
•The unit is fitted with filters of different filtration grades - ISO ePM1 55% (F7) and ISO ePM10 50%
(M5). The ISO ePM1 55% (F7) grade filter is to be installed in sector e1 (ODA). The filter ISO
ePM10 50% (M5) is to be installed in sector i1 (ETA).
4.10. Installing air filters
•The unit is supplied with separately packaged filter cassettes. Remove and unpack the cassettes
and check their condition.
•Install the cassettes in their proper locations on the unit as shown in Chapters 4.4 and 4.9. Follow
the pictures in appendix 11.2.
Unpack and install air filters last, immediately before putting the unit into service to avoid
contamination.
•Should any damage or contamination be detected, replace them with new ones. Spare filter
cassettes are to be ordered from the supplier. The supplier´s address and the spare cassette part
number are shown on the identification plate of the unit.
●Insert undamaged clean filters into the guide rails.
●Especially make sure that the arrow showing the direction of air flow through the filter cassette can
be seen from the side of the operator (the arrow is by the unit´s door) and that it is always pointing
towards the heat recovery exchanger!
●The unit is supplied with filter cassette labels unattached. Attach the relevant identification labels
near both filters. (e.g. for the door type)
Unpack and install air filters last, immediately before putting the unit into service to avoid
contamination.
Use original filter cassettes only! If different cassettes were used, the manufacturer could not
guarantee their proper function!
e1 (ODA)
e2 (SUP)
I2 (EHA)
i1 (ETA)
F7
M5

18
Record the date of installing filters appropriately in e.g. the operational logbook.
4.11. Installing, connecting and filling liquid manometers
Liquid manometers are a separately supplied accessory. Manometers are compulsory for hygienic
units in compliance with VDI 6022.
•Manometers are used for measuring the pressure loss of air filters. During installation follow the
visual instructions supplied with this optional accessory. After installation level the manometers
horizontally.
•Connect the manometers to collection points on the unit´s surface using tubes. Connect the tube
to the top of the manometer and run it to the metal bushing on the unit´s surface (also see a
separate manometer installation manual). The tube must always connect two matching connection
points identified by symbols “+” and “F+” and “-“ and “F-“ (cannot be combined). Make sure that
tubes from just one filter are connected to the manometer.
•Attach the relevant label near each manometer. Fill out the boxes with the filter grade and record
the flow rates and pressure losses of the clean filter (initial pressure loss) and when clogged (final
pressure loss) using data from the table below; the values must be adjusted on the basis on actual
air flow rates through the unit. The unattached label without information filled out is included.
DUPLEXbase PS 650
Filter type
Flow rate (m³/h)
150
300
450
600
700
ISO ePM1
55% (F7)
Initial pressure loss (Pa)
20
42
68
98
119
Final pressure loss (Pa)
300
300
300
300
300
ISO ePM10
50% (M5)
Initial pressure loss (Pa)
3
10
21
35
47
Final pressure loss (Pa)
150
150
150
150
150
DUPLEXbase PS 1100
Filter type
Flow rate (m³/h)
250
500
750
1000
1100
ISO ePM1
55% (F7)
Initial pressure loss (Pa)
8
32
71
126
153
Final pressure loss (Pa)
300
300
300
300
300
ISO ePM10
50% (M5)
Initial pressure loss (Pa)
6
16
29
45
52
Final pressure loss (Pa)
150
150
150
150
150
DUPLEXbase PS 1700
Filter type
Flow rate (m³/h)
300
600
900
1200
1500
ISO ePM1
55% (F7)
Initial pressure loss (Pa)
10
25
46
72
103
Final pressure loss (Pa)
300
300
300
300
300
ISO ePM10
50% (M5)
Initial pressure loss (Pa)
4
9
17
26
38
Final pressure loss (Pa)
150
150
150
150
150
DUPLEXbase PS 2300
Filter type
Flow rate (m³/h)
800
1200
1600
2000
2400
ISO ePM1
55% (F7)
Initial pressure loss (Pa)
16
27
40
56
74
Final pressure loss (Pa)
300
300
300
300
300
ISO ePM10
50% (M5)
Initial pressure loss (Pa)
9
15
21
27
34
Final pressure loss (Pa)
150
150
150
150
150
DUPLEXbase PS 3500
Filter type
Flow rate (m³/h)
1500
2000
2500
3000
3500
ISO ePM1
55% (F7)
Initial pressure loss (Pa)
38
58
81
108
138
Final pressure loss (Pa)
300
300
300
300
300
ISO ePM10
50% (M5)
Initial pressure loss (Pa)
6
11
18
25
34
Final pressure loss (Pa)
150
150
150
150
150

19
DUPLEXbase PS 4500
Filter type
Flow rate (m³/h)
1000
2000
3000
4000
4500
ISO ePM1
55% (F7)
Initial pressure loss (Pa)
9
25
48
79
98
Final pressure loss (Pa)
300
300
300
300
300
ISO ePM10
50% (M5)
Initial pressure loss (Pa)
2
6
14
26
32
Final pressure loss (Pa)
150
150
150
150
150
DUPLEXbase PS 6000
Filter type
Flow rate (m³/h)
2000
3000
4000
5000
6000
ISO ePM1
55% (F7)
Initial pressure loss (Pa)
24
42
63
87
115
Final pressure loss (Pa)
300
300
300
300
300
ISO ePM10
50% (M5)
Initial pressure loss (Pa)
9
16
25
36
49
Final pressure loss (Pa)
150
150
150
150
150
Note: Values in the tables apply to external static pressure 100 Pa. Different pressure requirements
may result in different situations. If needed, the detailed initial and final pressure loss data of the filters
are available on request from the supplier of the unit.
•Make sure that the position of the label makes it possible to regularly inspect the values recorded.
•Unscrew the rotating knob as much as possible to set zero on the scale (the bottom knob
identified by - +), then screw it back by approximately two full turns to have leeway to make
settings in both directions.
•Unscrew the FILL plug (the top knob) and keep filling the machine with measuring liquid (included
in delivery) until the liquid is visible near the zero mark on the scale. Use the bottom knob to set
the value on the scale precisely to zero. Screw the top filling plug-in.
After installing the manometers do not tilt the machine or the door (if they are installed on the
door). Measurement liquid might leak out.
4.12. Installing hot water heating coil
During the mechanical installation of the hot water air heater follow the manual supplied with this
optional accessory.
The supply (and top-up) water should fulfil especially the following criteria:
•The water must be limpid and colourless.
•The pH value of water must not be lower than 7. If water contains dissolved neutral salts its
pH value is to be between 8,5 and 9,5. Soda lye or trisodium phosphate (Na3PO4)can be used
for alkalinisation.
•The content of carbon dioxide in an ion and non-ion form is to be as small as possible.
•The remaining supply water hardness should be lower than 7 mmol/l (at q < 23 kW/m2) and
5 mmol/l (at q > 23 kW/m2). To soften the water, the following chemicals can be used:
trisodium phosphate Na3PO4or cation-exchange resin (in case water is harder than 7 mmol/l;
circuits with high volume of water; when electrical boilers and radiation boilers are present).
•The amount of calcium ion in the water up to 3,5 mmol/l (at q < 23 kW/m2) and up to 1,8
mmol/l (at q > 23 kW/m2).
•All CO2up to 75 mg/l (at q < 23 kW/m2) and 10 mg/l (at q > 23 kW/m2).
The following rules must be adhered to during the installation of the heater:
•The maximum permitted temperature of the heating medium is 110 °C and operational positive
pressure is up to 1.0 MPa.
•For the proper operation of the control set of the hot water heater the heating system must be
fitted with a circulation pump of suitable power that will fully cover its pressure losses. The pump,
which is supplied with the control set, is designed solely to cover the pressure losses of the water
heater!

20
•If the unit is not equipped with a shut-off damper on outdoor air inlet e1 (ODA), a tight shut-off
damper must be installed in the duct upstream the unit (a type with a servo drive with emergency
stop, that is, that automatically shuts in the event of a power outage).
•The heating system must be equipped with a sludge filter in the inlet into the unit.
A temperature sensor must be installed into the air duct to provide for anti-freeze protection of the
hot water heating coil. The sensor is to be installed behind the hot water heating coil in the
direction of air flow. Please follow the instructions in the guide enclosed to the temperature sensor.
Electrical installation may be carried out only by a person having the required electrotechnical
qualification.
You will find the wiring diagram in the unit’s Technical Specification or in the selection SW, tab
Controls > Wiring diagram.
When DUPLEXbase PS is installed indoors, the water heater can be attached to the unit or
installed in the supply duct e2 (SUP).
For outdoor installation of DUPLEXbase PS, the water heater can only be installed in the indoor
part of the e2 (SUP) air duct.
Water heater, ceiling-suspended position
Water heater, floor-standing position
Water heater installed in a duct