DV katalogi
Fans | Air Handling Units | Air Distribution Products | Air Conditioning | Fire Safety | Air Curtains and Heating Products | Tunnel Fans
Danvent DV
Modular Air Handling Unit
Bella Sky Hotel
Copyright: Systemair A/S
9. edition 2015
We accept no liability for printing
errors or alterations of products.
The dimensions and data used in this catalogue are a guideline only.
Accurate calculations must be made in SystemairCAD.
Danvent DV
Modular Air Handling Unit
Danvent DV
The catalogue contains a technical description of the air
handling unit series Danvent DV in the range 0,2-24 m3/s
(750-86.000 m3/h).
Danvent DV is continually being optimized and added
improvements. The result is extremely flexible air handling
units, both in terms of design and function.
Danvent DV forms together with Systemair's other air
handling unit series and ventilation products, the most
complete product range in the market.
Systemair in Denmark
Danvent DV air handling units are produced in Denmark. At
the Danish Systemair factory we have manufactured air
handling units since 1977. Systemair in Denmark houses
the group’s expertise for large air handling units. We focus
on development, manufacturing, sales, and consultations.
The Systemair Group
Systemair is an international group with its headquarters in
Sweden and with sales companies all over the world. We
offer a wide range of fans, fire, and smoke products and air
distribution components.
Hasselager, Denmark
| 3
4 |
Danvent DV
Contents
Introduction
Danvent DV
About the Danvent DV
Product Information
Standards and Certifications
Combination Examples
Functions
Damper Damper Mixing Damper Mixing Damper Compact Filter Bag Filter Rotary Heat Exchanger Plate Heat Exchanger Run-around Coil Heat Exchangers Heating Coil Cooling Coil Change-over Coil Integrated Reversible Heat Pump Air Humidifier Plug Fan Sound Attenuator Inspection Section Empty Section Outdoor Air Section Supporting Legs
Base Frame Dimensions for Ducts
Duct Connection Part . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
DVA . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
DVB . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
DVM . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
DVP . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
DVG . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
DVF . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
DVC . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
DVQ . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
DVR . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
DVH . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
DVK . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
DVHK . . . . . . . . . . . . . . . . . . . . . . . . . . 46
DVU-HP . . . . . . . . . . . . . . . . . . . . . . . . . 48
DVX . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
DVE . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
DVD . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
DVI . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
DVO . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
DVY . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
DVZ . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
DVT . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Danvent DV
Danvent DV
| 5
6 |
Danvent DV
About the Danvent DV
Danvent DV is designed as a modular
air handling unit. Each function is
placed into an air handling unit casing
consisting of one or more modules.
The modular functions can be confi­
gured for many different applications
to make up the heart of any ventilation system. The flexibility makes it
possible to optimize the air handling
unit for each project.
Functions
The Danvent DV features a number of
well-dimensioned functions, presenting a choice between different heat
exchanger systems, a range of fans,
filters, heating and cooling coils and
much more. This means the Danvent
DV can be configured for many different applications, from individual fan
units to advanced air handling units.
SystemairCAD calculates and optimizes the energy consumption and the
calculated data are the basis for
Eurovent certification and energy
classification of Danvent DV. The programme uses a number of combination examples or basic versions. For
these examples one can quickly add
or remove features in order to easily
design the desired air handling unit.
Sizes and airflows
The Danvent DV comes in a range of
14 different sizes, with airflow capacities from 0,2-24 m3/s or
750-86.000 m3/h, making it possible
to always find the unit optimized for
any given requirement.
SystemairCAD
The product selection programme,
SystemairCAD, ensures optimal
design of the air handling unit
functions. The programme is very
user-friendly and makes it possible to
quickly and easily combine air
handling unit functions and perform
technical calculations.
Fully-dimensioned drawings, plus
logical construction and presentation
of technical data provide easy overview, and the drawings can be
exported to AutoCAD and Autodesk
Revit. A plugin for MagiCAD and
Autodesk Revit also makes it possible
to export more inteligent files.
Download SystemairCAD from
www.systemair.com or local
Systemair website.
Casing
The casing protects the inside functions and is very effective for
thermal and sound insulation.
Airflow capacities for DV air handling units
1000
1500
2000
3000
5000
10000
20000
30000
50000
90000 m3/h
240
190
150
120
100
80
60
50
40
30
25
20
15
10
0,2
0,4
0,7
1
2
3
Indicates airflow range at the shown combination examples with heat recovery and by
specific fan power 2,1 kW/(m3/s). The exact values are calculated by SystemairCAD.
Indicates airflow range for the unit size.
5
10
Kombination C1E
Combination
C1
15
20
25 m3/s
Kombination Q1E
Combination
Q1
Danvent DV
Frame profiles and corners
Danvent DV is constructed using a
closed framing profile with cast painted aluminium corner pieces. The
frame profiles are made of steel with
alu-zinc corrosion protection. The
result is a strong and robust construction able to resist twisting and lateral
movement, making the unit extremely stable and strong.
with alu-zinc AZ185 ensure a
corrosion protection in class C4
according to EN ISO 12944-2:2000.
Panels
The panels of the Danvent DV are
built using a sandwich construction
with double sheets and 50 mm
mineral wool for sound and heat
insulation. The mineral wool is completely encapsulated, since the panels
are closed on all sides.
Inspection doors
Danvent DV has large inspection
doors, making service access easy.
The doors are mounted using solid
hinges with easily removable stainless steel pins. This means that the
doors can be easily removed, if there
is no room for normal opening of
the doors.
The panels with alu-zinc surface are
not only highly corrosion-resistant, but
present an attractive, uniform appearance that can last for many years.
Steel sheets which are protected
Disc-Lock
An air handling unit consisting of
several sections in size 10-150 can
be quickly and efficiently assembled
using Disc-Lock, our unique assembly
system.
The doors are sealed using rubber
profiles and locks with heavy-duty
handles. They can only be opened
using a key.
| 7
Roof units
Danvent DV in the sizes 10-150 are
available as roof units, designed for
outdoor installation. In this version
the unit features a roof construction
which together with the double sealing of the panels provides protection
against the effects of the weather.
The unit is available with louvers for
air intake and exhaust.
Control system
Danvent DV is available with pre­
installed and fully integrated
Systemair Corrigo control system.
Corrigo is an advanced user-friendly
system, with an external remote control panel for all settings. The panel
can be placed freely in the building.
Corrigo is a modern control system
with a large number of features e.g.
alarms, setting of time, operating
values and operating status. The
system is prepared for communication to a BMS system.
8 |
Danvent DV
Product Information
Air handling unit casing
Rigid frames with sound and thermal
insulated panels.
Materials
Frames
Closed 1,3/1,5 mm steel profile.
Surface: Alu-zinc AZ 185.
Corners
Strong cast painted aluminium corner
pieces.
Panels
Insulation sandwiched between two
0,8 mm steel sheets. The steel sheets
are corrosion protected with alu-zinc
AZ185.
Corrosion protection
Steel sheets which are protected with
alu-zinc AZ 185 ensure a corrosion
protection in class C4 according to
the standard EN ISO 12944-2:2000.
Insulation
Sound and thermal insulating mineral
wool, which is completely encapsulated between two steel sheets.
Thickness: 50 mm.
Density: 50 kg/m3.
Mechanical strength
Class D2
Operating pressure
Difference between surrounding and
pressure inside the air handling unit:
0 - 2000 Pa (DV 10-150)
0 - 1500 Pa (DV 190-240)
Filter by-pass leakage
Negative pressure:
- 400 Pa: Class G1-F9
Positive pressure:
+ 400 Pa: Class G1-F9
Operating temperatures
General temperatures
General temperatures for the air in
the air handling unit:
Standard design: -40/+40 ˚C
Special design: -40/+60 ˚C
Thermal transmittance
Class T2
Casing air leakage
Negative pressure: - 400 Pa: Class L2
Positive pressure: + 700 Pa: Class L2
Thermal bridging factor
Class TB3
Acoustic insulation of casing
Classifications
The performance of the air handling
unit casing corresponds with the following classifications according to the
European standard EN 1886,
2. edition 2008.
Octave band Hz
Insulation dB
125
17
250
23
500
24
1000
23
2000
25
4000
31
8000
38
Danvent DV
| 9
Standards and Certifications
The Danvent DV design is based on
the demands in the following CEN
and ISO standards:
EN 13779:2007
Ventilation for non-residential buildings. Performance requirements.
EN 305:1997
Heat exchangers. Definition and test
procedures.
EN 60204-1:2006
Machine safety.
Electrical equipment of machines.
EN 308:1997
Heat exchangers. Test procedures.
EN ISO 3741:2010
Determination of sound power level
in reverberation rooms.
EN 779:2012
Particulate air filters for general
ventilation.
EN 1216:1999
Heat exchangers
EN 1751:2014
Aerodynamic testing of dampers and
valves.
EN 1886:2008
Air handling units.
Mechanical performance.
EN 13053:2011
Ratings and performance for units
and components.
EN ISO 5136:2009
Determination of sound power level
in a duct.
EN ISO 12100:2011
Safety of machinery.
EN ISO 12944-2:2000
Corrosion protection. Classification of
environments.
Eurovent certification
Danvent DV air handling units are
Eurovent certified. This ensures the
conformity between the calculated
performance in SystemairCAD design
programme, and the measured performance at independent test laboratories. Certificate 07.02.339.
ISO 9001:2008 certification
Danvent DV air handling units are
developed and manufactured in
Denmark. The Quality management
system at the factory is certified
according to the standard EN ISO
9001:2008 by Bureau Veritas
Certification.
Machinery directive
Danvent DV air handling units are
manufactured according to the safety
demands of the EU Machinery
Directive 2006/42/EF. This is confirmed through the issurance of corresponding Declaration of
Incorporation for units without unit
control system, and corresponding
Declaration of Conformity and CE
label for units with factory installed
unit control system.
Eurovent energy classification
Danvent DV air handling units are
energy classified in according to
Eurovent’s guidelines for air handling
units RS 6/C/005–2015. The energy
class expresses the unit's total energy
consumption. The energy class is calculated by the design programme
SystemairCAD based on the actual
data of the designed unit.
ENERGY EFFICIENCY
339
2014
AHU No 07.02.339
DANVENT DV 10-240, TIME 10-40
Report to performance data 2014
10 |
Danvent DV
Combination Examples
Unit size
Rotary heat exchanger
10
15
20
25
30
40
50
60
80
100
120
150
190
240
Unit
Width
970
1120
1270
1420
1570
1720
2020
2170
2170
2370
2590
2890
3190
3490
Rotary heat exchanger section
Width
-
-
-
-
-
-
-
-
2320
2520
2890
3040
3720
4020
Unit
Height*
970
1120
1270
1420
1570
1720
2020
2240
2540
2840
3140
3440
4340
4940
C1
Length
2160
2160
2460
2460
2760
3060
2910
3280
3210
3960
4260
4560
5010
5530
430
520
660
760
920
1100
1470
1980
2140
2630
3250
3990
6290
7610
2910
2910
3210
3210
3510
3810
3660
4030
4030
4930
5230
5530
5980
6430
500
610
770
870
1080
1270
1690
2250
2470
3050
3890
4690
7220
8600
2680
2680
3130
3130
3430
3880
4030
4400
4400
5450
5900
6200
6430
7100
480
580
730
810
1010
1220
1700
2230
2480
3160
3870
4660
6870
8280
3430
3430
3880
3880
4180
4630
4780
5220
5220
6420
7020
7170
7400
8000
Weight kg
C2
Length
Weight kg
C3
Length
Weight kg
C4
Length
C5
Length
Weight kg
Weight kg
C6
Length
Weight kg
560
660
840
930
1180
1390
1930
2560
2830
3610
4560
5320
7790
9180
2680
2680
3130
3130
3430
3880
3730
4100
4100
5080
5380
5680
6430
7100
480
570
720
800
1010
1220
1630
2120
2330
2970
3620
4390
6860
8280
3430
3430
3880
3880
4180
4630
4480
4850
4850
6050
6350
6650
7400
8000
550
660
840
920
1180
1380
1850
2410
2670
3370
4280
5060
7790
9170
The above dimensions and weights are a guideline only. Accurate values and combinations are calculated in SystemairCAD.
* Height excl. legs/base frame. The heights of DV 190 and 240 are incl. base frames.
Unit size
Plate heat exchanger
Counterflow heat exchanger
Design an air handling unit
10
15
20
25
30
40
50
Unit
Width
970
1120
1270
1420
1570
1720
2020
Unit
Height*
970
1120
1270
1420
1570
1720
2020
Q1
Length
3280
3430
3880
3880
4480
4780
4930
570
700
874
1003
1296
1508
2084
3890
4180
4630
4630
5230
5530
5680
660
790
1000
1140
1470
1680
2310
3730
3950
4550
4550
5150
5600
5750
650
760
970
1020
1400
1630
2270
4480
4700
5300
5300
5900
6350
6500
720
840
1080
1190
1560
1800
2510
3730
3950
4550
4550
5150
5600
5750
640
750
960
1050
1410
1450
2250
4480
4700
5300
5300
5900
6350
6500
720
840
1080
1180
1550
1790
2490
Weight kg
Q2
Length
Weight kg
Q3
Length
Weight kg
Q4
Length
Weight kg
Q5
Length
Weight kg
Q6
Length
Weight kg
The above dimensions and weights are a guideline only. Accurate values and combinations are
calculated in SystemairCAD.* Height excl. legs/base frame.
Danvent DV contains countless
combination options. To ease
the process of designing a unit
the most popular combinations
are illustrated here.
Short building length
Choose EC blue fan if a short
air handling unit is needed.
Key to symbols
Exhaust air
Outdoor air
Extract air
Supply air
Danvent DV
Unit size
Plate heat exchanger
Cross-flow exchanger
10
15
20
25
30
40
50
60
80
100
120
150
Unit
Width
970
1120
1270
1420
1570
1720
2020
2170
2170
2370
2590
2890
Unit
Height*
970
1120
1270
1420
1570
1720
2020
2240
2540
2840
3140
3440
Q1
Length
3210
3580
4030
4330
4780
5080
5230
5460
5230
5910
6960
7260
570
760
940
1130
1370
1640
2300
2550
2610
3210
4200
5130
3960
4330
4780
5080
5530
5830
5980
6210
5980
6880
7930
8230
Weight kg
Q2
Length
Q3
Length
Weight kg
Weight kg
Q4
Length
Weight kg
Q5
Length
Weight kg
Q6
Length
Weight kg
660
850
1060
1260
1540
1810
2520
2880
2910
3660
4870
5790
3800
4100
4700
5000
5450
5900
6050
6280
6280
7330
8380
8680
650
820
1030
1140
1470
1760
2480
2720
2840
3620
4600
5550
4550
4850
5450
5750
6200
6650
6800
7030
6800
8000
9050
9350
720
900
1140
1310
1630
1930
2720
3030
3130
3980
5150
6130
3800
4100
4700
5000
5450
5900
6050
6280
6130
7030
8080
8680
640
810
1020
1170
1480
1750
2460
2700
2890
3690
4690
5840
4550
4850
5450
5750
6200
6650
6800
7100
6800
8000
9050
9350
720
900
1140
1300
1620
1920
2700
3030
3200
4120
5320
6380
120
150
The above dimensions and weights are a guideline only. Accurate values and combinations are calculated in SystemairCAD.
* Height excl. legs/base frame.
Unit size
Run-around coil heat exchangers
10
15
20
25
30
40
50
60
80
100
190
240
Unit
Width
970
1120
1270
1420
1570
1720
2020
2170
2170
2370
2590
2890
3190
3490
Single height unit
Height*
520
595
670
745
820
895
1045
1120
1270
1420
1570
1720
2170
2470
Double height unit
Height*
1040
1190
1340
1490
1640
1790
2090
2240
2540
2840
3140
3440
4340
4940
R1
Length
2540
2540
2690
2690
2840
2990
2990
3140
3140
3590
3890
4110
5010
5230
580
700
840
990
1170
1420
1980
2240
2460
2990
3800
4580
6290
7420
3360
3360
3510
3510
3360
3810
3810
3960
3960
4560
4860
5010
5910
6060
680
820
980
1150
1360
1620
2220
2550
2790
3510
4340
5170
7050
8270
Weight kg
R2
Length
Weight kg
The above dimensions and weights are a guideline only. Accurate values and combinations are calculated in SystemairCAD.
* Height excl. legs/base frame. The heights of DV 190 and 240 are incl. base frames.
Unit size
Integrated reversible heat pump
10
15
20
25
30
40
50
60
80
970
1120
1270
1420
1570
1720
2020
2170
2170
Unit
Width
Rotary heat exchanger section
Width
-
-
-
-
-
-
-
-
2320
Unit
Height*
970
1120
1270
1420
1570
1720
2020
2240
2540
U1
Length
3280
3280
3280
3580
3730
4030
5080
5150
5450
550
650
1040
1290
1460
1780
2700
3460
3870
Weight kg
The above dimensions and weights are a guideline only. Accurate values and combinations are calculated in SystemairCAD.
* Height excl. legs/base frame.
| 11
12 |
Danvent DV
Combination Examples
Unit size
Recirculated air
10
15
20
25
30
40
50
60
80
100
120
150
190
240
Unit
Width
970
1120
1270
1420
1570
1720
2020
2170
2170
2370
2590
2890
3190
3490
Single height unit
Height*
520
595
670
745
820
895
1045
1120
1270
1420
1570
1720
2170
2470
Double height unit
Height*
970
1120
1270
1420
1570
1720
2020
2240
2540
2840
3140
3440
4340
4940
M1
Length
2240
2240
2390
2390
2540
2840
2690
2840
2990
3660
3810
3960
4410
5080
M2
Length
Weight kg
Weight kg
M3
Length
Weight kg
M4
Length
Weight kg
M5
Length
Weight kg
M6
Length
Weight kg
250
280
350
390
470
560
800
900
1000
1300
1560
1900
2320
3040
3060
3060
3210
3210
3360
3660
3510
3660
3810
4410
4560
4710
5380
5980
330
400
480
560
640
780
1050
1180
1320
1660
2140
2460
3250
3940
3580
3580
3880
3880
4180
4780
4480
4780
5080
5980
6350
6650
7550
8820
390
450
560
620
760
940
1270
1470
1630
2060
2660
3150
3930
5100
4400
4400
4700
4700
5000
5600
5300
5600
5900
6950
7250
7620
8520
9720
480
560
690
790
940
1150
1550
1760
1960
2530
3250
3800
4850
6000
2610
2610
2910
2910
3210
3660
3360
2990
2990
3590
3810
3960
4710
5080
360
430
530
580
750
910
1220
1360
1520
1950
2510
2990
4190
5150
3430
3430
3730
3730
4030
4480
4180
3810
3880
4630
4780
4860
5680
5980
460
540
670
730
930
1150
1480
1650
1880
2430
3150
3570
5110
6050
The above dimensions and weights are a guideline only. Accurate values and combinations are calculated in SystemairCAD.
* Height excl. legs/base frame. The heights of DV 190 and 240 are incl. base frames.
Unit size
Supply air
10
15
20
25
30
40
50
60
80
100
120
150
190
240
Unit
Width
970
1120
1270
1420
1570
1720
2020
2170
2170
2370
2590
2890
3190
3490
Single height unit
Height*
520
595
670
745
820
895
1045
1120
1270
1420
1570
1720
2170
2470
Double height unit
Height*
1040
1190
1340
1490
1640
1790
2090
2240
2540
2840
3140
3440
4340
4940
S1
Length
1940
1940
2090
2090
2240
2390
2240
2390
2390
2690
2990
3140
4040
4260
220
260
320
370
430
510
700
800
880
1100
1400
1700
2250
2820
2690
2690
2840
2840
2990
3140
2990
3140
3140
3590
3960
4110
5010
5160
310
370
450
520
620
730
960
1110
1230
1490
2020
2320
3170
3720
1940
1940
2090
2090
2240
2390
2240
2390
2390
2690
2990
3140
4040
4260
340
400
500
580
690
830
1140
1320
1440
1790
2350
2800
3690
4560
2690
2690
2840
2340
2990
3140
2990
3140
3140
3590
3960
4110
5010
5160
430
510
630
730
870
1040
1400
1630
1790
2180
2960
3410
4610
5460
Weight kg
S2
Length
Weight kg
S3
Length
Weight kg
S4
Length
Weight kg
The above dimensions and weights are a guideline only. Accurate values and combinations are calculated in SystemairCAD.
* Height excl. legs/base frame. The heights of DV 190 and 240 are incl. base frames.
Key to symbols
Exhaust air
Outdoor air
Extract air
Supply air
Den Blå Planet, The National Aquarium Denmark
Danvent DV
| 13
14 |
Danvent DV
Damper DVA
Mixing damper DVM
Damper DVB
Mixing damper DVP
Compact filter DVG
Functions
Dampers
The dampers used in Danvent DV
comply with EN 1751:2014, sealing
class 3. They have contra-rotating
aerodynamically formed aluminium
blades that ensure a low pressure
loss when open.
Damper DVB
DVB is a shutoff damper fitted at the
top of the unit, and is used where a
damper is required for vertical air
handling unit connection. Prepared
for internal damper motor. Read
more, page 22.
The blades are equipped with special
rubber sealing strips between the
blades themselves and the frame, to
prevent air getting in. For very cold
areas, the blades can be insulated.
Mixing damper DVM
DVM is a mixing damper with two
built-in dampers that can either be
used as a shutoff or recirculation
damper. Prepared for internal damper
motors. When combined with the
DVB damper, the DVM acts as a total
mixing system, also ideal for recirculation. Read more, page 24.
The dampers ensure a long and trouble-free operation, as the blades are
mounted on sturdy square profile
shafts and service-free synthetic
bearings with large bearing surfaces.
A pivoting system placed outside the
airflow connects the blades, and it is
fitted with brass bushings. This allmetal solution of the pivoting system
ensures dampers smooth operation
even in areas with extreme cold.
The dampers are fitted with a position indicator.
Damper DVA
DVA is a shutoff damper designed for
efficient closing off of the supply and
exhaust air. The damper is to be
placed inside the unit and is prepared
for internal damper motor. Read
more, page 20.
Mixing damper DVP
DVP is a complete mixing damper
with three built-in dampers, which
can either be used as shutoff or
re­circulation dampers. Prepared for
internal damper motors. Read more,
page 26.
Compact filter DVG
DVG is a compact basic filter class G4
according to EN 779:2012. It has a
very short built-in length but DVG has
a relatively large filter area due to the
pleated filter construction. This gives
the DVG filter a relatively low pressure loss and long lifetime. DVG is
ideal as a pre-filter, helping to prolong the lifetime of the main filter.
The DVG filter can be slotted into the
filter frame of the air handling unit.
Read more, page 28.
Bag filter DVF
Bag filter DVF
DVF’s special shape provides an
extremely large filter area, which
together with the filter material’s
unique ability to collect dust particles,
ensure that the DVF filter has a long
lifetime, making it economical. DVF
filter is composed of filter cells classes G4, M5, M6, F7, F8, F9 and F7
City-Flo according to EN 779:2012.
F7 City-Flo is a filter with particle and
molecular filtration in the same
media. This unique filter media has a
very low initial and average pressure
drop during its life time. Several global standards require this kind of filtering solution in urban areas and areas
with heavy traffic.
DVF 10-150: The filter cells are held
in place using a simple but effective
system of lateral locking rails with
large handles, making filter changing
quick and easy.
DVF 190-240: The filter cells are held
in place to the filter bank frames with
effective fasteners.
This system also ensures that the filter cells form a tight seal with the
unit frame to comply with EN
1886:2008 edition. All seals are fixed
to the unit and do not need replacement when installing new filters.
Filter cells from all major filter manufacturers can be used in the DVF unit.
Read more, page 30.
Danvent DV
Rotary heat exchanger DVC
Rotary Heat Exchanger DVC
DVC is a rotary heat exchanger with a
high level of efficiency that can also
be used to transfer moisture from
warm and humid extract air. This type
of heat exchanger is one of the most
efficient of the various heat exchanger
systems. It is also the most compact,
due to its short installation length.
DVC is available in 4 versions with
different maximum efficiencies from
75 to 87% depending on operating
conditions.
DVC is available in 3 variants:
Standard, enthalpy and sorption heat
exchanger.
Standard heat exchangers recover
heat from extract air and contribute
to the heating of the supply air. At
low outdoor temperatures it can also
transfer moisture from the condensing extract air. It is available in all 4
versions.
Enthalpy heat exchangers recover
heat and moisture from extract air,
and contribute to heating and humidification of the supply air. It is available in 3 versions.
| 15
Plate heat exchanger DVQ
A sorption heat exchanger is ideal for
climate with high summer temperature and humidity, where it can
achieve significant savings by dehumidifying of the outdoor air before
cooling. It is available in 2 versions.
The DVC consists of a rotor made of
corrugated aluminium, built-in to stable rotor housing with a large inspection door. The rotor is assembled on
rails up to size 40, enabling it to be
pulled out for inspection and service.
To minimize air leakage, DVC heat
exchangers are fitted with highly
efficient brush seals between the
housing and the rotor. The rotor’s
drive unit is factory-fitted and can be
used for both constant and variable
speed. Variable speed gives a stepless regulation of the speed and thus
an optimal control of the heat
recovery. Read more, page 32.
Plate Heat Exchanger DVQ
DVQ is a plate heat exchanger available in 3 versions. Cross flow heat
exchanger for unit sizes 10 to 150 in
standard version with efficiency up to
65%, in high efficiency version with
efficiency up to 75%, and counter
flow heat exchanger for unit sizes 10
to 50 with efficiency up to 90%,
depending on operating conditions.
DVQ is thus ideal for situations where
the separation of the two airflows is a
necessity, to avoid the transfer of
unpleasant odours to the supply air for
example. Because humidity is not
transferred between the airflows, DVQ
can also be used for dehumidifying.
The cross flow heat exchanger is
available in two variants for use in
different environments. The aluminium variant is used for commercial
ventilation where no corrosive elements are present in the air, such as
schools, kindergartens, offices, airports and hotels. The corrosion resistant variant with coated aluminium
plates is used in environments where
the extract air can contain aggressive
elements. The counter flow heat
exchanger version is only available in
aluminium variant. The heat transfer
capacity can be regulated using the
built-in by-pass damper. Cross flow
versions are always fitted with a drip
tray to collect condensed water from
the extract air. The counter flow versions have drip tray fitted in both
extract and supply air. Read more,
page 36.
16 |
Danvent DV
Functions
Run-around coil heat exchangers DVR
Run-around coil heat exchangers DVR
DVR is a heat exchanger system
where a mixture of water and glycol
is circulated between a heating coil in
the supply airflow and a cooling coil
in the extract airflow. The transfer of
heat takes place via a piped circuit
that must be fitted after the unit is
installed.
DVR heat exchangers have an efficiency of up to 70%. The effectiveness of the system is dependent on
its construction and the volume and
type of water/glycol mixture circulating between the coils. Run-around
coil heat exchangers are used where
the two airflows must be kept completely separate, or where they are at
a distance from each other e.g. on
two different storeys of a building.
A drip tray is fitted in the extract air
coil section. The drain outlet must be
connected to a water trap with sufficient locking height. The extract air
coil can be supplied with a built-in
droplet eliminator. DVR has coils made
of copper tubes with aluminium fins.
Capacity regulation can be achieved
using a shunt system with a motor
valve, or by regulating the circulation
pump. Read more, page 40.
Heating coil DVH
Cooling coil DVK
Heating coil DVH
The DVH heating coil is used to heat
up the supply air, using either hot
water, condensation of a cooling
medium or electricity. Dimensioning
the DVH coil is done using the design
programme SystemairCAD, where the
coil will be determined optimally to
solve the current task. SystemairCAD
calculations are TÜV tested according
to EN 1216:1999.
Cooling coil DVK
The DVK cooling coil is used to cool
down the supply air either with cold
water, or directly evaporation.
Dimensioning the DVK coil is done
using the design programme
SystemairCAD, where the coil will be
determined optimally to solve the
current task. SystemairCAD calculations are TÜV tested according to EN
1216:1999.
Heating coils are manufactured of
materials adapted to the heating
medium and the environment the coil
is to operate in. Coils with copper
tubes and aluminium fins are used for
hot water and condensation. The cupper tubes are ø10 or ø15 mm,
depending on the capacity required.
Electrical heating coils have stainless
steel heating elements and built-in
safety control system.
DVK coils are made with copper tubes
and aluminium fins. The tubes are
ø10 or ø15 mm, depending on the
capacity required. As light corrosion
protection the cooling coils can be
supplied with fins in aluminium-magnesium or epoxy coated aluminium.
As light corrosion protection the heating coils can be supplied with fins in
aluminium-magnesium or epoxy coated aluminium. Coils for hot water can
be supplied with a connection piece
to fit a temperature sensor in the
water circuit, in order to subsequently
equip the unit with modulating frost
protection. The coil is fully built-in in
the unit as standard, but also comes
in a MAX version where the coil section is wider than the standard unit
width. This will reduce the air velocity.
Read more, page 42.
Cooling coils for direct evaporation
have the liquid distributor located in
the unit. The expansion valve can be
fitted on the connection pipe outside
the unit. Cooling coils are fitted with
drip tray. The drain outlet must be
connected to a water trap with sufficient locking height. The cooling coil
can be supplied with a built-in droplet
eliminator. The coil is fully built-in in
the unit as standard, but also comes
in a MAX version where the coil section is wider than the standard unit
width. This will reduce the air velocity.
Read more, page 44.
Danvent DV
Heat pump DVU-HP
Change-over coil DVHK
Change over coil DVHK is basically a
cooling coil for cold water that can be
used also for heating by changing the
water temperature from cold to hot
depending on the demand. Typically, it
is used in connection with heat
pumps. The coil is dimensioned in
SystemairCAD so it can meet the
capacity requirements for both heating
and cooling. Read more, page 46.
Heat pump DVU-HP
DVU-HP is a complete section with an
integrated heat pump system with
the option of both heating and cooling. It also includes a rotary heat
exchanger for efficient heat and cooling recovery. The section is supplied
built into Danvent DV and is tested
from the factory ready for operation.
The combination of heat pump and
rotary heat exchanger ensures a
short installation length and excellent
operating econo­my in both heating
and cooling situations. DVU-HP is
equipped with two scroll compressors
(1 compressor for DV 10 and DV 15),
and heating/cooling capacity is stepless variable in the range 5-100% for
maximum comfort and minimum
energy consumption. The heat pump
is based on R-410A refrigerant.
DVU-HP is delivered with built-in control system for complete control and
management of the refrigeration
system. DVU-HP’s intelligent control
Plug fan DVE-EC Blue
system communicates with the air
handling unit’s control system, so that
the desired heating or cooling capacity is always delivered. When heating
or cooling is required, the heat pump
will start, and the capacity is controlled through the modulating digital
function on one of the scroll compressors. The built-in control system
in the DVU-HP also ensures that compressors and other components
always work within the permitted
limits and thus do not get overloaded. Airflow and temperature are controlled by the control system of the air
handling unit. Read more, page 48.
Plug fan DVE
The DVE has the fan impeller fitted
directly to the motor, and enclosed
into an acoustically insulated casing.
A plug fan is a single inlet, freeblowing fan, where the unit casing functions as fan housing. The fan has an
efficiency of up to 75% and features
low sound levels in the low frequencies. In order to optimize the fan efficiency a number of larger units are
equipped with more fans for parallel
operating.
Because of its construction, a plug fan
can give a low and even air speed at
the outlet of the fan unit. The DVE is
ideal for units where components are
to be positioned after the fan.
| 17
Plug fan DVE-PM/AC
In order to make service and inspection access easy, the DVE is fitted with
a large hinged inspection door with a
safety guard behind the door. Interior
lighting is an option.
DVE comes in two variants:
• DVE-EC Blue
Compact plug fan with an effective
composite impeller, and EC external
rotor motor with integrated variable
speed control. The EC motor is in efficiency class IE4.
• DVE-PM/AC
Plug fan with an effective impeller fitted to the the motor shaft. Depending
on size the impeller is made of composite material or painted steel.
The fan can be supplied with 2 types
of motors:
• Highly efficient PM synchronous
motor, efficiency class IE4.
• AC asynchronous motor, efficiency
class IE2.
PM and AC motors are stepless controllable via frequency converter.
In order to optimize the plug fan efficiency in the operating point, the fans
can be selected in more variants in
each unit size.
All impellers are balanced statically
and dynamically. PM/AC plug fans are
mounted on vibration isolators to
ensure vibration-free operation.
Read more, page 52.
18 |
Danvent DV
Functions
Sound attenuator DVD
Sound attenuator DVD
The DVD is an absorption sound
attenuator, fitted with baffles. DVD is
used to reduce the sound power level
from the air handling unit to the duct
system.
For environmental reasons, the baffles have a surface lining that effectively prevents the entrainment of
the sound-absorbing material. This
surface lining comes in two variants:
1. Standard lining, suitable for all
forms of comfort ventilation purposes. Baffles with a strongly,
durable lining, resistant to mecha­
Inspection section DVI
nical wear and tear. Are used in
situations where the baffles
require dry cleaning, such as
brushing or vacuum cleaning.
2. B
affles with a synthetic lining, ideal for wet cleaning. Each baffle is
enclosed in a stainless steel frame
and used where high levels of
hygiene require direct washing of
the baffles.
DVD can by variant 1, as an option,
be delivered with large inspection
doors for easy cleaning. Inspection
doors are standard by variant 2.
Read more, page 56.
Empty section DVO
Inspection Section DVI
The DVI inspection section is an empty unit section with an inspection
door. DVI is used between components that require inspection and servicing. DVI can be fitted with an
inspection window and internal light.
Read more, page 58.
Empty section DVO
DVO is an empty unit section without
inspection door. Can e.g. be used to
create distance between unit components with different shapes. Read
more, page 59.
Danvent DV
Roof unit DV
Bitumen roof
Roof unit DV
Steel profile roof
Roof unit DV
The DV air handling unit in the sizes
10 to 150 are available as roof units
for outdoor installation. In this version
the unit is assembled on a base frame
and features a roof construction
which together with the double sealing of the panels provides protection
against the effects of the weather.
for fastening and finishing the roofing. This type of roofing is supplied
for local assembling on the air hand­
ling unit. The steel profile roof is a
robust roofing where the surface
matches the units panels.
The DV roof unit can be delivered
with two different types of roofing:
Bitumen roof:
Manufactured of polyester, reinforced
bitumen material fitted to the unit by
a heating process. The bitumen roof
is a very close and robust roofing
completely finished from factory.
Steel profile roof:
Manufactured of alu-zink protected,
corrugated steel sheets, and profiles
Air intake and exhaust are available
with louvers for effective protection
against rain and snow. Outdoor air
section DVY (see page 60) features
outlet of exhaust air on the back of
the unit.
Systemair Corrigo control system
Danvent DV is available with pre­
installed Systemair Corrigo control
system, fully tested at the factory. It
is a flexible and user-friendly system,
where operating and monitoring is
carried out on a remote control panel,
which can be positioned freely up to
100 m from the unit.
| 19
DSP control panel
The control panel displays continuously operating status, operating values,
time settings and alarms. The control
system is supplied pre­installed with
the functions selected in the design
programme SystemairCAD and with
standard temperature, time settings
and control sequences so that it is
ready for use immediately after installation.
Additions or changes to functions can
be made via the control panel. The
Corrigo can communicate with BMS
systems via Modbus, Bacnet or Lon.
Operation can alternatively be
managed via WEB interface or an
Android application.
20 |
Danvent DV • Damper DVA
Damper DVA
Function
Supply or extract air shutoff damper.
Air tightness classification
Class 3 according to EN 1751:2014.
Sealing
Rubber sealing strips between the
damper blades. Special sealing
between frame and damper blades.
Blade position indicator
Arrow for indication of the blade
position.
Shafts
Damper blades
Aerodynamically formed aluminium
profiles. Can be supplied as an option:
• Insulated
• Anodized.
Motor bracket
Bracket for fixing of a damper motor
for each damper.
14,3 mm
aluminium
Bearings
Synthetic bearings with large bearing
surfaces.
Blade pivoting system
Steel rods with maintenance free
brass bushings.
Damper motor
The dampers are activated by a
motor for each damper.
DV 10-150: 1 damper motor.
DV 190-240: 2 damper motors.
16,3 mm aluminium with
steel reinforcement
Danvent DV • Damper DVA
Damper fitted to the upper
part of a double height unit
DVA 190-240
Damper fitted to
a single height unit
DVA 10-150
DVA 190-240
L
35
35
35
H2
35
35
H1: Single height unit
H2: Double height unit
Dimensions
Size
10
15
20
25
30
40
50
60
80
100
120
150
190
240
B
970
1120
1270
1420
1570
1720
2020
2170
2170
2370
2590
2890
3190
3490
H1
520
595
670
745
820
895
1045
1120
1270
1420
1570
1720
2170
2470
H2
970
1120
1270
1420
1570
1720
2020
-
-
-
-
-
-
-
L
185
185
185
185
185
185
185
185
185
185
335
335
785
785
D
900
1050
1200
1350
1500
1650
1950
2100
2100
2300
2520
2820
2600
2800
E
350
450
500
600
650
750
900
1000
1150
1300
1450
1600
1500
1800
F
-
-
-
-
-
-
-
-
-
-
-
-
295
345
G
-
-
-
-
-
-
-
-
-
-
-
-
410
410
Torque (Nm) for each damper
Size
10
100
120
150
190
240
5
6
7
8
9
11
12
14
15
17
18
2*12
2*15
7
8
10
11
13
14
16
17
19
21
23
24
2*17
2*21
9
11
13
15
17
19
20
22
24
26
28
29
2*22
2*26
0 Pa
4
500 Pa
1000 Pa
15
20
25
30
40
50
60
80
Required minimum torque per damper motor for opening/closing at varying differential pressure across the damper.
| 21
22 |
Danvent DV • Damper DVB
Damper DVB
Function
Extract air shutoff damper.
Air tightness classification
Class 3 according to EN 1751:2014.
Blade position indicator
Arrow for indication of the blade
position.
Shafts
14,3 mm
aluminium
16,3 mm aluminium
with steel reinforcement
Damper blades
Aerodynamically formed aluminium
profiles. Can be supplied as an option:
• Insulated
• Anodized.
Sealing
Rubber sealing strips between the
damper blades. Special sealing
between frame and damper blades.
Bearings
Synthetic bearings with large bearing
surfaces.
Blade pivoting system
Steel rods with maintenance free
brass bushings.
Motor bracket
Bracket for fixing of a damper motor
for each damper.
Damper motor
The dampers are activated by a
motor for each damper.
DV 10-150: 1 damper motor.
DV 190-240: 2 damper motors.
Danvent DV • Damper DVB
DVB 10-150
DVB 190-240
DVB 10-150
DVB 190-240
L
L
Dimensions
Size
10
15
20
25
30
40
50
60
80
100
120
150
190
240
B
970
1120
1270
1420
1570
1720
2020
2170
2170
2370
2590
2890
3190
3490
H
520
595
670
745
820
895
1045
1120
1270
1420
1570
1720
2170
2470
L
520
520
520
520
520
670
670
670
820
970
970
970
1120
1570
D
500
600
800
900
1100
1200
1500
1600
1700
1800
2000
2300
2600
2800
E
200
200
300
300
300
400
400
500
600
700
700
700
1000
1200
F
235
260
235
260
235
260
260
285
235
285
295
295
295
345
K
160
160
110
110
110
135
135
85
110
135
135
135
60
185
25
30
40
50
80
Torque (Nm) for each damper
Size
10
15
20
100
120
150
190
240
5
6
7
8
9
10
11
13
14
2*10
2*12
7
8
10
11
13
14
15
16
18
19
2*15
2*17
9
11
13
15
17
19
20
20
23
24
2*20
2*22
0 Pa
4
4
4
500 Pa
5
6
1000 Pa
7
8
60
Required minimum torque per damper motor for opening/closing at varying differential pressure across the damper.
| 23
24 |
Danvent DV • Mixing Damper DVM
Mixing Damper DVM
Function
Supply air shutoff and mixing damper.
Air tightness classification
Class 3 according to EN 1751:2014.
Blade position indicator
Arrow for indication of the blade
position for each damper.
Shafts
14,3 mm
aluminium
16,3 mm aluminium with
steel reinforcement
Damper blades
Aerodynamically formed aluminium
profiles. Can be supplied as an option:
• Insulated
• Anodized.
Sealing
Rubber sealing strips between the
damper blades. Special sealing
between frame and damper blades.
Bearings
Synthetic bearings with large bearing
surfaces.
Blade pivoting system
Steel rods with maintenance free
brass bushings.
Motor bracket
Bracket for fixing of a damper motor
for each damper.
Damper motor
The dampers are activated by a
motor for each damper.
DV 10-150: 2 damper motors.
DV 190-240: 4 damper motors.
Danvent DV • Mixing Damper DVM
DVM 10-150
DVM 190-240
DVM 10-150
DVM 190-240
L
L
Dimensions
Size
10
15
20
25
30
40
50
60
80
100
120
150
190
240
B
970
1120
1270
1420
1570
1720
2020
2170
2170
2370
2590
2890
3190
3490
H
520
595
670
745
820
895
1045
1120
1270
1420
1570
1720
2170
2470
L
520
520
520
520
520
670
670
670
820
970
970
970
1120
1570
D
500
600
800
900
1100
1200
1500
1600
1700
1800
2000
2300
2600
2800
E
200
200
300
300
300
400
400
500
600
700
700
700
1000
1200
F
235
260
235
260
235
260
260
285
235
285
295
295
295
345
G
100
100
100
100
100
100
100
100
100
100
100
100
660
710
K
160
160
110
110
110
135
135
85
110
135
135
135
60
185
25
30
40
50
80
Torque (Nm) for each damper
Size
10
15
20
100
120
150
190
240
5
6
7
8
9
10
11
13
14
2*10
2*12
7
8
10
11
13
14
15
16
18
19
2*15
2*17
9
11
13
15
17
19
20
20
23
24
2*20
2*22
0 Pa
4
4
4
500 Pa
5
6
1000 Pa
7
8
60
Required minimum torque per damper motor for opening/closing at varying differential pressure across the damper.
| 25
26 |
Danvent DV • Mixing Damper DVP
Mixing Damper DVP
Function
Supply, extract air shutoff and mixing
damper.
Air tightness classification
Class 3 according to EN 1751:2014.
Damper blades
Aerodynamically formed aluminium
profiles. Can be supplied as an option:
• Insulated
• Anodized.
Sealing
Rubber sealing strips between the
damper blades. Special sealing
between frame and damper blades.
Transport
DV 10 - DV 50:
Delivered at full height. Transport
height HT minimum = H.
Blade pivoting system
Steel rods with maintenance free
brass bushings.
DV 60 - DV 150:
Delivered as standard at full height.
Transport height HT minimum = H.
Available as an option divided into
transport height HT minimum = H/2.
Blade position indicator
Arrow for indication of the blade
position for each damper.
Bearings
Synthetic bearings with large bearing
surfaces.
Motor bracket
Bracket for fixing of a damper motor
for each damper.
Shafts
Damper motor
The dampers are activated by a
motor for each damper.
DV 10-150: 3 damper motors.
DV 190-240: 6 damper motors.
14,3 mm
aluminium
16,3 mm aluminium with
steel reinforcement
DV 190 - DV 240:
Is always delivered divided into 2
sections. Transport height HT minimum = H/2.
Danvent DV • Mixing DamperDVP
DVP 190-240
DVP 10-150
35
35
DVP 10-150
DVP 190-240
35
H
H
2
35
35
DVP 190 and 240 is divided into two sections at delivery.
Dimensions
Size
10
15
20
25
30
40
50
60
80
100
120
150
190
240
B
970
1120
1270
1420
1570
1720
2020
2170
2170
2370
2590
2890
3190
3490
H
970
1120
1270
1420
1570
1720
2020
2240
2540
2840
3140
3440
4340
4940
L
520
520
670
670
670
820
820
970
970
1120
1120
1120
1420
1570
D
900
1050
1200
1350
1500
1650
1950
2100
2100
2300
2520
2820
2600
2800
E
350
450
500
600
650
750
900
1000
1150
1300
1450
1600
1500
1800
F
-
-
-
-
-
-
-
-
-
-
-
-
295
345
G
-
-
-
-
-
-
-
-
-
-
-
-
410
410
Torque (Nm) for each damper
Size
10
100
120
150
190
240
5
6
7
8
9
11
12
14
15
17
18
2*10
2*12
7
8
10
11
13
14
16
17
19
21
23
24
2*15
2*17
9
11
13
15
17
19
20
22
24
26
28
29
2*20
2*22
0 Pa
4
500 Pa
1000 Pa
15
20
25
30
40
50
60
80
Required minimum torque per damper motor for opening/closing at varying differential pressure across the damper.
| 27
28 |
Danvent DV • Compact Filter DVG
Compact Filter DVG
Function
Prefilter.
DVG 10-240.
Filter surface area
Large surface area due to the
pleated filter form.
Filter classification
G4 according to EN 779:2012.
Filter frame
Framework encasing the filter
with U-profiles.
Filter material
Synthetic polyester fibres.
Accessories
U-tube manometer.
Unit size
Number and size
DV10
2x[376x376x44]
DV15
2x[448x448x44]
DV20
1x[241x495x44] + 1x[495x495x44] + 1x[391x495x44]
DV25
2x[445x622x44] + 1x[391x622x44]
DV30
3x[445x622x44]
DV40
6x[495x368x44]
DV50
6x[622x391x44]
DV60
8x[495x495x44]
DV80
4x[495x495x44] 4x[495x597x44]
DV100
10x[445x622x44]
DV120
15x[495x445x44]
DV150
21x[391x495x44]
DV190
15x[592x592x25] *
DV240
15x[592x592x25] + 8x[287x592x25] *
* Only in combination with DVF with inspection section for filter change on the
dirty side.
Danvent DV • Compact Filter DVG
Filter fitted to a
single height unit.
Filter fitted to the upper
part of a double height unit.
H1: Single height unit
H2: Double height unit
Dimensions
Size
10
15
20
25
30
40
50
60
80
100
120
150
B
970
1120
1270
1420
1570
1720
2020
2170
2170
2370
2590
2890
H1
520
595
670
745
820
895
1045
1120
1270
1420
1570
1720
H2
970
1120
1270
1420
1570
1720
2020
-
-
-
-
-
L
150
150
150
150
150
150
150
150
150
150
150
150
| 29
30 |
Danvent DV • Bag Filter DVF
Bag Filter DVF
Function
Prefilter, medium or fine filter.
Filter classification
G4, M5, M6, F7, F8, F9 and F7 CityFlo according to EN 779:2012.
Filter material
G4: Synthetic material.
M5, M6, F7, F8
F9: Glass fibre material.
F7 City-Flo glass fibre and
coal with a wide spectrum.
Filter frame
The filter cells are supplied with 25
mm standard plastic frame.
Therefore, used filters can be disposed of in their entirety by combustion. DVF 40 is supplied only with
steel frame.
Unit size
Sealing
Rubber sealing strips are fixed to the
filter cabinet. Air tightness according
to EN 1886:2008.
Fitting the filter cells
DVF 10-150: The filter cells are
pressed against the sealing strips
and locked into place using a sliding
rail system. This system is easy to
operate by using a large handle.
DVF 190-240: The filter cells are
pressed against the sealing strips in
the filter bank frames with effective
fasteners.
Accessories
• Inspection window
• Pressure tapping
• Light with external switch
• U-tube manometer
• Inclined tube manometer
• Magnehelic manometer
• Stainless steel sheet under the
filters
• Spare filter set.
Positioning of an F9 filter
The class F9 filter should always be
positioned on the positive pressure
side of the supply air unit
(EN 1886:2008).
Number and size of frames
DVF 190-240, pre-filters
DVF can be supplied with pleated
formed pre-filters, if the filter section
is combined with inspection section
for filter change at the dirty side. The
filters are placed together with the
bag filters into the filter bank frames.
G4
370 mm
number of
bags
M5
520 mm
number of
bags
M6
520 mm
number of
bags
F7/F8-9
520 mm
number of
bags
F7L/F8-9L
640 mm
number of
bags
F7 City-Flo
520 mm
number of
bags
12
DV10
1x[792x392]
12
12
12
12
12
DV15
2x[490x392]
8
8
8
8
8
8
DV20
1x[490x490] + 1x[592x490]
8+6
8+6
8+10
8+10
8+10
8+10
DV25
2x[592x592]
DV30
1x[592x592]+ 1x[490x592] + 1x[287x592]
DV40
3x[490x742] (delivered with steel frame)
DV50
3x[592x490] + 3x[592x287]
DV60
8x[490x490]
6
6
10
10
10
10
6+5+3
6+5+3
10+8+5
10+8+5
10+8+5
10+8+5
5
5
8
8
8
-------
6+6
6+6
10+10
10+10
10+10
10+10
5
5
8
8
8
8
DV80
4x[490x592] + 4x[490x490]
5+8
5+8
8+8
8+8
8+8
8+8
DV100
4x[592x592] + 4x[490x592]
6+5
6+5
10+8
10+8
10+8
10+8
DV120
4x[592x592] + 4x[592x490] + 4x[592x287]
6+6+6
6+6+6
10+10+10
10+10+10
10+10+10
10+10+10
6+8
6+8
10+8
10+8
10+8
10+8
6
6
10
10
10
10
6+3+6
6+3+6
10+5+10
10+5+10
10+5+10
10+5+10
DV150
9x[592x490] + 6x[490x490]
DV190
15x[592x592]
DV240
15x[592x592] + 3x[287x592] +
5x[592x287]
Danvent DV • Bag Filter DVF
Filter fitted to a single height unit.
DVF 190-240
DVF 10-240
H1: Single height unit
H2: Double height unit
L1: G4, M5, F7, F9
L2: F7L, F9L
DVF 190-240
With inspection section for filter change on the dirty side.
3
4
L3: G4, M5, F7, F9
L4: F7L, F9L
Dimensions
Size
10
15
20
25
30
40
50
60
80
100
120
150
190
240
B
970
1120
1270
1420
1570
1720
2020
2170
2170
2370
2590
2890
3190
3490
H1
520
595
670
745
820
895
1045
1120
1270
1420
1570
1720
2170
2470
H2
970
1120
1270
1420
1570
1720
2020
-
-
-
-
-
-
-
L1
600
600
600
600
600
600
600
600
600
600
600
600
600
600
L2
750
750
750
750
750
750
750
750
750
750
750
750
750
750
L3
-
-
-
-
-
-
-
-
-
-
-
-
1200
1200
L4
-
-
-
-
-
-
-
-
-
-
-
-
1350
1350
| 31
32 |
Danvent DV • Rotary Heat Exchanger DVC
Rotary Heat Exchanger DVC
Function
Regenerative heat exchanger with
high efficiency.
Versions DVC are available in 4 versions:
•1
,9 mm – low pressure drop
= standard efficiency
,7 mm – normal pressure drop
•1
= normal efficiency
•1
,5 mm – medium high pressure
drop = medium high efficiency
•1
,4 mm – high pressure drop
= high efficiency
Variants
DVC are available in 3 variants:
Standard, enthalpy and sorption heat
exchanger.
P/PT - Standard heat exchanger.
Winter: This variant is mainly used for
recovery of heat from the extract air.
However, there may also be recovered moisture from the extract air
through condensation at low outdoor
temperatures. Summer: Recovery of
cooling energy from the extract air.
Available in version: 1,9 mm, 1,7 mm,
1,5 mm and 1,4 mm.
E/ET - Enthalpy heat exchanger.
Winter: This variant has a hygroscopic
surface so that recovery of heat and
moisture is possible before condensation. In this way, high extract air
enthalpy content can contribute to
the heating and humidification of the
supply air. Summer: Recovery of cooling energy from the extract air and
lightly dehumidification of outdoor air
before cooling. Available in version:
1,9 mm, 1,5 mm and 1,4 mm.
N - Sorption heat exchanger:
This variant has a surface coating of
Zeolit, which is a material that has
unique properties in terms of absorbing and releasing moisture.
Winter: Recovery of heat and moisture from the extract air. In this way,
high extract air enthalpy content can
deliver a large contribution to the
heating and humidification of the
supply air. Summer: Recovery of cooling energy from the extract air and
dehumidification of outdoor air before
cooling. Large power savings for cooling can be achieved hereby as less
energy is required for condensation
on the cooling coil. Available in version: 1,7 mm and 1,4 mm.
Rotor
The rotor is made with a hub with
bearings and two layers of aluminium. The first layer is smooth and the
second is corrugated. The two layers
are rolled up to the required outer
diameter, and then fixed in a very
stable construction. The height of the
corrugation determines the pressure
drop as well as the mass of the rotor
and thus also the efficiency.
Aluminium foil D is 0,07 mm and
used for standard and enthalpy
exchangers, which are delivered
assembled. Aluminium foil C is 0,08
mm and used for sorption exchangers
and exchangers which are delivered
divided. Foil width is 200 mm.
Sealing
In order to safeguard against leakage
between the airflows the heat
exchanger is fitted with highly effective brush type seals against the rotor.
Service-friendly
The heat exchanger is equipped with
a large inspection door. The exchangers in sizes DVC 10 to 40 are assembled on guide rails enabling the rotor
to be removed for inspection.
Division of large heat exchangers
On account of transport the exchangers from size 60 can be supplied
divided in the height. The sizes 190
and 240 are always supplied divided.
The lower half of the exchanger and
the hub of the rotor are assembled
into the lower half of the AHU casing.
All other parts of the heat exchanger
are supplied for local assembling.
Purging sector
The exchanger is available with a
purging sector that minimises the
transfer of extract air to supply air.
This function is dependent on a higher pressure on the supply air side
than on the extract air side, both
before and after the exchanger.
Drive system
An electronic control unit and a slow
rotating motor drive the exchanger.
This provides an accurate and stepless regulation of the rotor speed. In
this way the exchanger efficiency is
controlled. The drive system can also
be set up for constant speed. In this
way the exchanger provides full heat
recovery when it is in operation.
Danvent DV • Rotary Heat Exchanger DVC
Direction variants
Function
The heat exchanger has a built-in electronic control unit and a slow rotating
motor. This makes up a complete drive
system for stepless regulation of the
heat exchanger speed. The control
system is delivered with fully assembled cable connections between the
control unit and motor.
Mains connection
1 x 230 V, 50/60 Hz.
Alarm connections
Built-in relay for connection to an
alarm system. By an undesirable ope­
rating situation an alarm is tripped.
Protection
Built-in protection against unstable
voltage supplies from the mains. Builtin overcurrent protection, which protects the motor against overloading.
Rotary alarm switch
Built-in system for monitoring the
rotor operation position. Gives a signal by way of an alarm connection, if
the rotor operation is interrupted
unintentionally.
Operation indication
The control unit has a LED that indicates the actual operating situation.
Control signal
The control unit can be regulated by
an external 0-10 VDC control signal.
For standard and enthalpy heat
exchangers 0-10 V corresponds to
0-10 rpm, and for sorption heat
exchangers to 0-20 rpm.
Purging
Outside of the normal operating
period the rotor is turned slowly 12
sec. every 15 min. in order to purge
the rotor with clean air.
Cooling recovery
The heat exchanger can be activated
for the recovery of cooling energy via
the external control signal.
Data for rotor drive system, standard and enthalpy heat exchangers
System
DVC size
Motor
Type
Torque, Nm
Control unit
Power, W
Type
Voltage, V
Current, A
Max. fuse
10-40
90 TYD-M
2,8
85
RHC 200
1 x 230
0,4
10 A
50-150
120 TYD-M
5,5
145
RHC 200
1 x 230
0,6
10 A
120 TYD-L
7,5
370
RHC 200
1 x 230
1,6
10 A
190-240
Data for rotor drive system, sorption heat exchanger
System
DVC size
Motor
Power, W
Type
Voltage, V
Current, A
10
90 TYD-M
2,8
85
RHC 200
1 x 230
0,4
10 A
15-60
120 TYD-M
5,5
145
RHC 200
1 x 230
0,6
10 A
120 TYD-L
7,5
370
RHC 200
1 x 230
1,6
10 A
80-240
Type
Torque, Nm
Control unit
Max. fuse
Mains electrical connection must not be cut-off outside the normal operating period, as this will terminate the purging function.
Supply air
Extract air
| 33
34 |
Danvent DV • Rotary Heat Exchanger DVC
Rotary Heat Exchanger DVC
DVC 10-50
'
DVC 60-150
DVC 190-240
L
D, D1
D1
H
C
B
C
D1: Divided version.
Dimensions
Size
10
15
20
25
30
40
50
60
80
100
120
150
190
240
B
970
1120
1270
1420
1570
1720
2020
2170
2170
2370
2590
2890
3190
3490
H
970
1120
1270
1420
1570
1720
2020
2240
2540
2840
3140
3440
4340
4940
L
300
300
300
300
300
300
450
520
520
520
520
520
670
670
F
-
-
-
-
-
-
-
2170
2320
2520
2890
3040
3720
4020
C
-
-
-
-
-
-
-
0
75
75
150
75
265
265
D
820
970
1120
1270
1420
1570
1780
1900
2100
2300
2600
2770
-
-
-
-
-
-
-
-
-
1880
2045
2270
2600
2720
3300
3600
D1
Danvent DV • Rotary Heat Exchanger DVC
DVC 60-240
Heat exchanger supplied in divided version.
Transport height HT for heat exchangers
supplied in divided version.
Transport protection
Lower part of the heat exchanger
HT
Transport height HT
Size
60
80
100
120
150
190
240
HT
1640
1790
1940
2090
2240
2765
3065
| 35
36 |
Danvent DV • Plate Heat Exchanger DVQ
Plate Heat Exchanger DVQ
Function
Recuperative plate heat exchanger
with high efficiency.
Variants
The versions are available in 2
variants:
Application
The plate heat exchanger is used
where there are special requirements
for separation of the two airflows,
e.g. in order to avoid transfer of
odours to the supply air.
A – Aluminium heat exchanger
Version S, H and C is used in ventilation plants where the air does
not contain corrosive elements,
e.g. ventilation plants for commercial purposes. Many chemicals
and solvents do not attack aluminum. This heat exchanger can
be used where the air contains
these substances. The conditions
should be evaluated for each
plant.
K – Corrosion resistant heat
exchanger. Version S and H.
The heat exchanger plates are
coated with corrosion resistant
synthetic material. Can be used in
plants where the air contains
elements which attack aluminium.
Versions
S–S
tandard cross flow heat
exchanger
DVQ 10-150
Efficiency up to 65%
H–H
igh efficiency cross flow heat
exchanger
DVQ 10-150
Efficiency up to 75%
C – Counter flow heat exchanger
DVQ 10-50
Efficiency up to 90%
By-pass
The heat exchanger is supplied with a
built-in by-pass that can regulate the
heat recovery from 0-100%. The bypass function is comprised of a
damper for the heat exchanger and a
damper for the by-pass airway. The
by-pass function is located in the
middle of DVQ-S 100-150, DVQ-H 100150 and DVQ-C 10-50. Consequently,
the heat exchanger is divided.
Service-friendly
The heat exchanger is equipped with
large inspection doors that give
access for inspection and service. As
the heat exchanger has no rotating
part, it requires very little service.
De-icing
In situations where the outdoor air is
extremely cold there is a risk of the
exchanger icing up. De-icing can take
place either by regulating the by-pass
damper or by reducing the supply air
flow.
Drip tray
A drip tray is fitted beneath the heat
exchanger for collection of the water
that can condense in the extract air.
The drip tray drain outlet must be fitted with a water trap that is designed
for the actual pressure difference.
Refer to the assembly instructions.
The counter flow heat exchanger is
fitted with a drip tray in both extract
and supply air sections.
Danvent DV • Plate Heat Exchanger DVQ
Version S and H
Version C
Air direction variants
Extract air, diagonal up-flow *
DVQ-S and -H
Air direction variants
Extract air, diagonal down-flow
DVQ-S, -H and -C
Outdoor air
Extract air
Exhaust air
Supply air
Exhaust air
Supply air
Outdoor air
Extract air
DVQ-S and -H
DVQ-S and -H
Extract air
Supply air
Outdoor air
Exhaust air
Outdoor air
Exhaust air
Extract air
Supply air
* Air directions with up-flow extract air (3 and 4) should only be used when the moisture
content of the extract air, before the heat exchanger, is less than the following values:
Supply air before heat exchanger °C
0
-10
-20
-30
Extract air before heat exchanger max. g moisture/kg air
10
8
6
4
| 37
38 |
Danvent DV • Plate Heat Exchanger DVQ
Plate Heat Exchanger DVQ
DVQ-S 10-50
1
2
3
4
6
DVQ-H 10-50
1
5
2
3
6
5
DVQ-C 10-50
DVQ-H 60
4
1.
2.
3.
4.
5.
6.
By-pass damper
Heat exchanger damper
Shaft for damper motor
Plate heat exchanger
Drip tray drain outlet
Drip tray
Danvent DV • Plate Heat Exchanger DVQ
DVQ-S 60-80, DVQ-H 80
DVQ-S 100-150, DVQ-H 100-150
Dimensions
Size
10
15
20
25
30
40
50
60
80
100
120
150
B
970
1120
1270
1420
1570
1720
2020
2170
2170
2370
2590
2890
H
970
1120
1270
1420
1570
1720
2020
2240
2540
2840
3140
3440
L vers. S
1050
1200
1200
1500
1500
1650
1650
2020
2020
2320
2620
3070
L vers. H
1420
1720
1820
2170
2320
2320
2840
3290
2470
2470
3220
3220
L vers. C
1420
1570
1720
1720
2020
2020
2170
1"
1"
1"
1"
1"
1½"
1½"
1½"
1½"
1½"
1½"
1½"
2 x 1"
2 x 1"
2 x 1"
2 x 1"
2 x 1"
2 x 1"
2 x 1"
25
30
40
50
60
80
100
120
150
RG-S/H
RG-C
Torque (Nm) for each damper
Size
10
15
20
Number
1
1
1
1
1
1
1
1
1
3
3
3
Nm
8
10
12
14
16
18
20
22
24
20
120
20
Required torque for the damper motor. Shaft for damper motor:
14,3 mm.
| 39
40 |
Danvent DV • Run-around Coil Heat Exchangers DVR
Run-around Coil Heat
Exchangers DVR
–C
opper tubes ø10 mm.
Used for lower capacity
heat exchangers.
Drip tray
The extract air section is fitted with a
drip tray for collection of condensed
water. The drip tray drain outlet must
be fitted with a water trap that is
designed for the actual pressure difference. Refer to the assembly
instructions.
opper tubes ø15 mm.
–C
Used for higher capacity
heat exchangers.
Droplet eliminator
DVR is available with a droplet eliminator in the extract air section.
Function
Heat exchanger system with a heating coil built into the supply air side
and a cooling coil built into the
extract air side. The coils must be
connected with a piped circuit in
which a water/glycol mixture is circulated.
Construction
The heat exchanger coils consists of
copper tubes with aluminium fins.
Application
The run-around coil heat exchangers
are used where it is a requirement
that the two airflows must be kept
completely separated, or where they
are at a distance from each other,
e.g. on two storeys of a building.
Y
Tubes
Z
Fins
Al
Alup
Variants
Standard – C
oil completely built into
the unit.
MAX
oil which is wider than
–C
the unit. DVR 10-150.
– Standard aluminium.
– Aluminium with a synthetic
coating. Used for mildly
corrosive air.
Regulation
A motorised valve built into the pipe
circuit regulates the heat exchanger
capacity.
AlMg₃ – Aluminium-magnesium
alloy. Used for air in connection with seawater.
Piped circuit example
Extract air
1. Air vent
2. Manometer
3. Safety valve
4. Feed valve
5. Pressure expansion
6. Thermometer
7. Motorised valve
8. Flow measuring valve
9. Pump
Supply air
Danvent DV • Run-around Coil Heat Exchangers DVR
Inlet
Outlet
Standard
DVR 10-150
Standard
DVR 10-150
RG – Drain connection,
extract air
MAX
DVR 10-150
MAX
DVR 10-150
Drain connection
extract air
Standard
DVR 190-240
RG – Drain connection,
extract air
Dimensions
Size
10
15
B
970
H
520
Supply air L*
Extract air L*
RG
20
25
30
40
50
60
80
100
120
150
190
240
1120
1270
595
670
1420
1570
1720
2020
2170
2170
2370
2590
2890
3190
3490
745
820
895
1045
1120
1270
1420
1570
1720
2170
2470
300
300
450
450
300
300
300
300
300
300
300
300
300
300
300
300
450
450
450
450
450
450
450
450
450
450
450
450
600
600
600
600
600
600
600
600
600
600
600
600
600
600
450
450
450
450
450
450
450
450
450
450
450
450
600
600
600
600
600
600
600
600
600
600
600
600
600
600
750
750
750
750
750
750
750
750
750
750
750
750
750
750
900
900
1"
1"
1"
1"
1"
1½"
1½"
1½"
1½"
1½"
1½"
1½"
1½"
1½"
* L is dependent on the capacity.
| 41
42 |
Danvent DV • Heating Coil DVH
Heating Coil DVH
Function
Air heater
Heating media
W–H
ot water.
Max. temperature 100 °C,
max. working pressure 10 Bar.
Available for temperatures up to
130 °C.
ondensation of refrigerant.
C–C
Max. working pressure depending
on the type of refrigerant.
E – Electrical heating.
Variants
Standard – Heating coil completely
built into the unit.
MAX
eating coil which is
–H
wider than the unit.
Hot water and conden­
sation coils only.
DVH 10-150.
Construction
Finned coils for hot water and condensation consist of copper tubes
with aluminium fins. Coils for electrical heating consist of stainless steel
tube heating elements.
Copper tubes
Z – Copper tubes ø10 mm. Used for
lower capacity heating coils.
Y – Copper tubes ø15 mm. Used for
higher capacity heating coils.
Fins
Al
Alup
Frost protection
Heating coils for hot water are available with a connection piece for the
fitting of a temperature sensor in the
water circuit.
Electrical heating
The inspection door, which can be
opened only by using a key, gives
access to a terminal box for the electrical connections. The coil has a
built-in safety thermostat with an
automatic reset function and an overheating thermostat with manually
resetting.
– Standard aluminium.
– Aluminium with a synthetic
coating. Used for mildly
corrosive air.
AlMg₃ – Aluminium-magnesium
alloy. Used for air in
connection with seawater.
Electrical heating coil
Hot water heating coil
Danvent DV • Heating Coil DVH
Standard
DVH
10-150
Standard
DVH 10-150
MAX
DVHMAX
10-150
DVH 10-150
Standard
DVH 190-240
Pipe connections
Inlet
Outlet
Hot water
Condensation
Dimensions
Size
10
15
20
25
30
40
50
60
80
100
120
150
190
240
B
970
1120
1270
1420
1570
1720
2020
2170
2170
2370
2590
2890
3190
3490
H1
520
595
670
745
820
895
1045
1120
1270
1420
1570
1720
2170
2470
H2
970
1120
1270
1420
1570
1720
2020
-
-
-
-
-
-
-
L*
150
150
150
150
150
150
150
150
150
-
-
-
-
-
-
300
300
300
300
300
300
300
300
300
300
300
300
300
300
-
450
450
450
450
450
450
450
450
450
450
450
450
450
450
-
600
600
600
600
600
600
600
600
600
600
600
600
600
600
H1: Single height unit, H2: Double height unit.
* Heating coils for hot water (W), condensation (C) or electrical heating (E).
| 43
44 |
Danvent DV • Cooling Coil DVK
Cooling Coil DVK
Function
Air cooler.
Cooling media
W–C
old water.
Max. working pressure 10 Bar.
D–E
vaporation.
Max. working pressure depending
on the type of refrigerant.
Variants
Standard – C
ooling coil completely
built into the unit.
MAX ooling coil which is wider
–C
than the unit. DVK 10-150.
Construction
Finned coils consist of copper tubes
with aluminium fins.
Copper tubes
Z – Copper tubes ø10 mm.
Used for lower capacity
cooling coils.
Y–C
opper tubes ø15 mm.
Used for higher capacity
cooling coils.
Fins
Al
Alup
– Standard aluminium.
– Aluminium with a synthetic
coating. Used for mildly
corrosive air.
AlMg₃ – Aluminium-magnesium
alloy. Used for air in
connection with seawater.
Cooling coil fitted into a single height unit.
Pipe connections
The connection pipes for the cooling
coil are placed outside of the air
hand­ling unit. The cooling coil for
evaporation has the liquid distributor
placed inside the unit section. The
expansion valve can be fitted to the
connection piece outside of the unit.
Drip tray
The cooling coil section is fitted with
a drip tray for collection of condensed
water. The drip tray drain outlet must
be fitted with a water trap that is
designed for the actual pressure difference. Refer to the assembly
instructions.
Droplet eliminator
DVK is available with a droplet eliminator that prevents condensed water
droplets from being carried into the
airflow.
Cooling coil fitted into a double height unit.
Danvent DV • Cooling Coil DVK
Standard
DVK 10-150
RG – Drain connection
MAX
MAX
DVK 10-150
10-150
DVK
Drain connection
Standard
DVK 190-240
RG – Drain connection
Pipe connections
Inlet
Outlet
Cold water
Evaporation
Dimensions
Size
10
15
20
25
30
40
50
60
80
100
120
150
190
240
B
970
1120
1270
1420
1570
1720
2020
2170
2170
2370
2590
2890
3190
3490
H1
520
595
670
745
820
895
1045
1120
1270
1420
1570
1720
2170
2470
H2
970
1120
1270
1420
1570
1720
2020
-
-
-
-
-
-
-
L*
450
450
450
450
450
450
450
450
450
450
450
450
600
600
-
600
600
600
600
600
600
600
600
600
600
600
600
750
750
-
750
750
750
750
750
750
750
750
750
750
750
750
900
900
1"
1"
1"
1"
1"
1½"
1½"
1½"
1½"
1½"
1½"
1½"
1½"
1½"
RG
H1: Single height unit, H2: Double height unit.
* L is dependent on the capacity.
| 45
46 |
Danvent DV • Change-over Coil DVHK
Change-over Coil DVHK
Function
Heating of air with hot water/glycol.
Cooling of air with cold water/glycol.
Fins
Al
Alup
Heating/cooling media
W – Hot/cold water.
Max. working pressure 10 Bar.
Variants
Standard – Cooling coil completely
built into the unit.
Construction
Finned coils consist of copper tubes
with aluminium fins.
Copper tubes
Y – Copper tubes ø15 mm.
– Standard aluminium.
– Aluminium with a synthetic
coating. Used for mildly
­corrosive air.
AlMg₃ – Aluminium-magnesium
alloy. Used for air in connection with seawater.
Pipe connections
The connection pipes for the cooling
coil are placed outside of the air
hand­ling unit.
Drip tray
The cooling coil section is fitted with
a drip tray for collection of condensed
Fitted into a single height unit.
water. The drip tray drain outlet must
be fitted with a water trap that is
designed for the actual pressure difference. Refer to the assembly
instructions.
Droplet eliminator
DVHK is available with a droplet
elimi­nator that prevents condensed
water droplets from being carried into
the airflow.
Frost protection
The cooling coil is available with a
connection piece for the fitting of a
temperature sensor in the water
circuit.
Fitted into a double height unit.
Danvent DV • Change-over Coil DVHK
Standard
DVHK 10-150
RG – Drain connection
MAX
Standard
DVHK190-240
10-150
DVHK
RG – Drain connection
Pipe connections
Inlet
Outlet
Dimensions
Size
10
15
20
25
30
40
50
60
80
100
120
150
190
240
B
970
1120
1270
1420
1570
1720
2020
2170
2170
2370
2590
2890
3190
3490
H1
520
595
670
745
820
895
1045
1120
1270
1420
1570
1720
2170
2470
H2
970
1120
1270
1420
1570
1720
2020
-
-
-
-
-
-
-
L
450
450
450
450
450
450
450
450
450
450
450
450
600
600
1"
1"
1"
1"
1"
1½"
1½"
1½"
1½"
1½"
1½"
1½"
1½"
1½"
RG
H1: Single height unit, H2: Double height unit.
| 47
48 |
Danvent DV • DVU-HP
Integrated Reversible Heat Pump DVU-HP
Function
The DVU-HP is an integrated heat
pump system built into a unit section.
The system consists of a reversible
heat pump and a rotary heat
exchanger that enables both heating
and cooling. The DVU-HP can be supplied for Danvent DV 10 to 80.
Ready for operation at delivery
DVU-HP is supplied as a complete
unit that is ready for operation immediately after installation, as it is configured and tested from the factory.
The installation is very simple, as the
DVU-HP is placed between the unit
sections and connected to power
supply and control signals as well as
condensate drain. DVU-HP is
equipped with complete control
system, which controls the safety
functions and capacity regulation.
The control system can communicate
both with Systemair Corrigo control
system and other control solutions.
Construction
DVU-HP consists of a heat pump
system with a 4-way reversing valve
so that the system can heat or cool
the supply air. Additionally, a rotary
heat exchanger is built-in for efficient
heat recovery. The combination of
heat pump and rotary heat exchanger
ensures excellent operating economy
in both heating and cooling situations.
DVU-HP is equipped with two scroll
compressors (1 compressor for DV 10
and DV 15). The capacity is controlled
through the modulating digital function on one of the scroll compressors.
Capacity control
The capacity of the DVU-HP can be
controlled between 5-100% via a
0-10 V DC signal from the air hand­
ling unit’s control system. In addition,
the control system controls the cooling recovery with the rotary heat
exchanger when cooling is required.
The outdoor air is cooled by the rotary heat exchanger when the temperature of the extract air is lower than
the temperature of the outdoor air. In
cooling mode, heat is discharged from
the compressor system via the condenser in the exhaust air after the
rotary heat exchanger.
Dimensions
DVU-HP size
Width
Height
DVU-HP 10
970
970
1420
DVU-HP 15
1120
1120
1420
DVU-HP 20
1270
1270
1420
DVU-HP 25
1420
1420
1420
DVU-HP 30
1570
1570
1570
DVU-HP 40
1720
1720
1570
DVU-HP 50
2020
2020
2320
Electrical connection
3 x 400 V + N + PE
Start/stop signal
Heating/cooling mode signal
0-10 V DC for capacity control
Alarm signal.
Service-friendly
DVU-HP has a very service-friendly
design with easy access to all components inside the large inspection doors.
Condensation tray
The drain outlet must be connected to
a water trap with sufficient locking
height.
SystemairCAD, design programme
The programme is very user-friendly
and it is easy and simple to select DVUHP. When the unit design is finished,
SystemairCAD makes all technical calculations and a complete documentation. This ensures a quick overview of
capacities, energy consumption,
detailed consulting text and dimension
drawings, in a detailed pdf-printout.
Length
DVU-HP 60
2170
2240
2460
DVU-HP 80
2170/2320*
2540
2460
* Rotary heat exchanger.
Refrigerant
Type R-410A
H
L
W
Danvent DV • DVU-HP
Cooling and heating capacity, example with DV 40 med DVU-HP
Heating capacity
140 kW
130 kW
Cooling capacity
80 kW
DVU-HP heating circuit
DVU-HP cooling circuit
Rotary heat exchanger
Rotary heat exchanger
70 kW
120 kW
110 kW
60 kW
100 kW
90 kW
50 kW
80 kW
70 kW
40 kW
60 kW
30 kW
50 kW
40 kW
20 kW
30 kW
20 kW
10 kW
10 kW
-15 °C /
90% RH
-10 °C /
85% RH
- 5 °C /
80% RH
0 °C /
75% RH
5 °C /
70% RH
Outdoor conditions
25 °C /
70% RH
28 °C /
60% RH
31 °C /
50% RH
34 °C /
45% RH
22
22
22
22
22
Supply air temperature °C
16
16
16
16
148
130
108
88
67
5,2
3,5
3,0
2,6
2,2
28,4
37,2
36,0
33,9
30,5
Heating capacity kW
Cooling capacity kW
Consumed power kW
COP, total
EER, total
Performance example: DV 40 with
2,5 m3/s. Extract 22 °C/35% RH.
Defrosting is not taken into account.
53
63
72
86
6,5
7,5
8,8
10,3
8,1
8,4
8,1
8,4
Performance example: DV 40 with
2,5 m3/s. Extract 23 °C/63% RH.
Cooling capacity
Unit size
DV 10
DV 15
DV 20
DV 25
DV 30
DV 40
DV 50
DV 60
DV 80
Recommended max.
airflow m3/s
0,8
1,2
1,6
2,0
2,5
3,0
4,0
4,8
5,3
Total cooling capacity kW
27
41
55
65
79
102
137
165
181
Capacity from the
cooling circuit kW
12
18
24
29
34
44
59
73
77
EER, total
7,2
7,1
6,7
6,9
7,1
7,6
8,0
7,5
8,2
Outdoor conditions: 34 °C/45% RH. Supply air: 16 °C. Extract air conditions: 23 °C/63% RH.
| 49
50 |
Danvent DV • Air Humidifier DVX
Air Humidifier DVX
Function
The function is based on the natural
process that water evaporates when
air passes a wet surface. By uptake of
water vapor in the air, the temperature will decrease due to the fact that
heat for the evaporation comes from
the air. This is an adiabatic cooling,
which means that the enthalpy content of the air is unchanged during
the process. This ensures that humidi­
fication occurs without releasing
drops, unless this is effected by
entrainment. Entrainment may be
avoided by passing the humidification
elements with a suitable low speed
or by mounting droplet eliminators,
which can handle this.
Application
The humidifier can be placed in the
supply air after a heating coil which
can preheat the air before humidification. There may also be a need for an
after heating coil in order to achieve
the desired supply air temperature. In
areas with high outdoor temperature
and low humidity, placement of the
humidifier in the supply air can be
used as adiabatic cooling with great
advantage. Indirect adiabatic cooling
can be achieved by placing in the
extract air before a plate heat
exchanger or a standard rotary heat
exchanger.
Construction
The humidifier is designed as a complete unit that fits the internal dimensions of a section of length 970 mm
in the DV 10 to DV 240. The unit
comprises humidification elements,
tray and frame made of stainless
steel AISI 304, circulation pump,
­balancing valves for irrigation, overflow, valve for adjusting bleed off,
float valve for controlling the water
supply to the tray and valve for emptying the tray. Droplet eliminator is
included if necessary and sensor for
protection of pump at low water
level. The drain is led out of the section, and can be selected either on the
inspection side or the backside. The
drain must be connected to a water
trap with sufficient locking height.
Humidification elements
HU-CELL humidification elements are
stainless steel frames which contains
corrugated fiberglass plates arranged
in cross-channel configuration. The
corrugated cross-channel configuration ensures that the air is in contact
with a large surface area for evaporation, and at the same time provides a
low pressure drop. The glass fiber
material is impregnated with a stabilizing and absorbent additive which
makes it possible to absorb water
without loss of stability. The element
is of inorganic material, and is therefore not a feed source for bacteria
and mould. The material contains silver ions, which acts as a growth
inhibitor. This increases the resistance
to the growth of microorganisms and
helps to release deposits from the
water on the material, so that this
remains clean. Silver ions are encapsulated in a chemical mixture, which
ensures that their particles do not
dissolve to either water or air. The
elements are supplied in the following thicknesses 75 mm, 100 mm,
125 mm and 150 mm. This makes it
possible to optimize the pressure
drop depending on the desired
humidification/cooling requirement.
Technical data
The design programme SystemairCAD
calculates all important data such as
temperature, relative and absolute
humidity after the humidifier, pressure drop and water consumption etc.
Danvent DV • Air Humidifier DVX
5
Operating principles
HEF2E (Recirculated water, standard on/off)
5
Humidification element 1
Bleed off
Humidification element 2
E
Water supply
3
4
8
9
6
C
7
F
Water tray
G
D
Overflow
5
A
1
2
9
D
E
4
7
10
C
G
6
B
3
A
Process air
B
Humidified air
C
Water supply
D
Overflow
E
Constant bleed off
F.
Draining
G.
Water outlet to drain
1.
Humidification element
2.
Droplet eliminator (optional)
3.
Water recirculations pump
4.
Bleed off regulation valve
5.
Irrigation regulation valves
6.
Float valve
7.
Draining valve
8.
Filling solenoid valve (optional)
9.
Max/min water level detector
10.
| 51
Cut-off valve (depending on model)
52 |
Danvent DV • Plug Fan DVE
Plug Fan DVE
Function
Plug fan built into an acoustically
insulated air handling unit.
Construction
Single inlet plug fan with open outlet
into the air handling unit. The fan
impeller is fitted directly to the motor.
The backward curved impeller has
low sound power levels in the lower
frequencies. Static efficiency up to
75%. For optimizing the plug fan
efficiency in the operating point, the
fans can be selected in several variations in each unit size:
• S: Low airflow
• M: Medium airflow
• L: High airflow
Variants
DVE comes in two variants:
•D
VE-EC Blue
Compact plug fan with an effective
composite impeller, and EC external
rotor motor with integrated variable
speed control. The EC motor is in
efficiency class IE4.
•D
VE-PM/AC
Plug fan with an effective impeller
fitted to the motor shaft. Depending
on size the impeller is made of
composite material or painted steel.
The fan can be supplied with 2
types of motors:
• Highly efficient PM synchronous
motor, efficiency class IE4.
• AC asynchronous motor, efficiency
class IE2.
PM and AC motors are stepless controllable via frequency converter.
Plug fan
DVE-EC Blue is a compact plug fan
with an impeller made of composite
material, where all details are optimized in order to achieve a high efficiency. The impeller is fitted directly
to an EC external rotor motor with
integrated variable speed control. An
EC motor is characterized by a high
efficiency and excellent control features. For optimizing the efficiency in
the operating points, the fan can be
selected in several variations in each
unit size. Several fans can be positioned in parallel operation at larger
units. The fans are mounted on the
end wall of the fan section.
DVE-PM/AC is a plug fan with an
efficient impeller fitted to the motor
shaft. Depending on size, the impeller
is made of composite material where
all details are optimized, or painted
steel. For optimizing the efficiency in
the operating points, the fan can be
selected in 3 variations in each unit
size. 2 fans can be positioned in
parallel operation at larger units. The
fans are mounted on vibration isolators on the bottom of the fan section.
The DVE-PM/AC fan can be supplied
with 2 types of motors for 3 x 400 V
AC:
• PM – Permanent magnet – synchronous motor. The motor has a very
high efficiency, since the rotor is
made of magnetic material, which
eliminates the slip, so that heat
generation and losses in the motor
are reduced. Efficiency class IE4
according to EN 60034-31. The
motor is stepless controllable
through a frequency converter,
which is adapted exactly to the individual motor and fan. Parallel operation of Twin fans is controlled by
two frequency converters with the
same control signal.
• AC – Induction – asynchronous
motor. Efficiency class IE2 according
to EN 60034-30:2009. The motor is
stepless controllable through a frequency converter. Parallel operation
of Twin fans is controlled by one
frequency converter.
Positioning in the air handling unit
A plug fan supplies air at the fan section outlet with a low and even air
speed. Therefore, it is an advantage
to position air handling components
on the outlet side of the fan.
Service-friendly
DVE has a large inspection door giving easy access for service. DVE-PM/
AC in sizes 10-30 has the fan and
motor assembled on guide rails which
allows easy extraction from the unit.
Sound data
The design programme SystemairCAD
calculates the fan sound power level
Lw (ref. 1 pW). The calculations are
based on measurements carried out
according to the following standards:
• EN ISO 5136:2009, Determination of
sound power level in a duct.
• EN ISO 3741:2010, Determination of
sound power level in reverberation
rooms.
The SystemairCAD also calculates the
sound power levels for all duct connections to the unit.
Danvent DV • Plug Fan DVE
Balancing
The fan is balanced both statically
and dynamically.
Operating temperatures
Temperature range: -10/+40 °C.
Airflow calculation
The inlet cone is equipped with a
measuring nipple. This can be used to
determine the current airflow using the
k-factor and the formula:
V = ∆Pm x k V = Airflow in m3/h
∆Pm = Measured pressure in Pa
(according to sketch)
K = K-factor for the current fan
(according to table).
+
+
+
Volumeter Pressure
transmitter
DVE – PM/AC
DVE-EC Blue
Fan type
DVE-EC Blue
Impeller
ø mm
10-S
220
Steel
47
10-S
75
10-M
250
Composite
60
10-M, 15-S
95
10-L, 15-M
280
Composite
75
10-L, 15-M
Composite
121
15-L, 20-M
310
Composite
95
15-L, 20-S
Composite
154
20-L, 25-M
350
Composite
121
20-M, 25-S
450
Composite
197
25-L, 30-M
400
Composite
154
20-L, 25-M, 30-S
500
Composite
252
30-L, 40-M, 50-S
450
Composite
197
25-L, 30-M, 40-S
560
Composite
308
40-L, 50-M, 60-S
500
Composite
252
30-L, 40-M, 50-S
630
Composite
381
60-M, 80-S
560
Composite
308
40-L, 50-M, 60-S
2 x 450
Composite
394
50-L
2 x 450
Composite
394
50-L
2 x 500
Composite
504
60-L, 80-M, 100-S
630
Composite
381
60-M, 80-S
Impeller
ø mm
Material
250
Composite
60
280
Composite
310
Composite
350
400
K-factor
2 x 560
Composite
616
80-L, 100-M, 120-S
2 x 500
2 x 630
Composite
762
100-L, 120-M, 150-S
710
3 x 560
Composite
924
120-L, 150-M, 190-S
2 x 560
4 x 560
Composite
1232
150-L, 190-M, 240-S
800
4 x 630
Composite
1524
190-L, 240-M
2 x 630
5 x 630
Composite
1905
240-L
Material
K-factor
Fan type
DVE–PM/AC
Composite
504
60-L
Steel
490
80-M, 100-S
Composite
616
80-L
100-M, 120-S
Steel
620
Composite
762
100-L
900
Steel
789
120-M, 150-S
2 x 710
Steel
980
120-L, 190-S
1000
Steel
999
150-M
2 x 800
Steel
1240
150-L, 190-M, 240-S
2 x 900
Steel
1578
190-L, 240-M
2 x 1000
Steel
1998
240-L
| 53
54 |
Danvent DV • Plug Fan DVE
Plug Fan DVE
DVE 10-150
H1: Single height unit.
H2: Double height unit.
DVE-EC Blue.
DVE 190-240
DVE-PM/AC 190-240
Dimensions
Size
10
15
20
25
30
40
50
60
80
100
120
150
190
240
B
970
1120
1270
1420
1570
1720
2020
2170
2170
2370
2590
2890
3190
3490
H1
520
595
670
745
820
895
1045
1120
1270
1420
1570
1720
2170
2470
H2
970
1120
1270
1420
1570
1720
2020
-
-
-
-
-
-
-
L, DVE-EC Blue-S
750
750
750
750
750
750
750
900
900
1050
1050
1200
1350
1350
L, DVE-EC Blue-M
750
750
750
750
750
750
900
900
1050
1050
1200
1350
1350
1350
L, DVE-EC Blue-L
750
750
750
750
750
750
900
1050
1050
1200
1350
1350
1350
1350
L, DVE-PM/AC-S
750
750
750
900
900
1050
1200
1200
1350
1650
1800
1950
1650
1800
L, DVE-PM/AC-M
750
750
750
900
900
1050
1200
1200
1350
1650
1800
1950
1650
2100
L, DVE-PM/AC-L
750
750
900
900
1050
1200
1050
1200
1200
1500
1650
1800
1950
2100
A* DVE-PM/AC
750
750
750
900
900
-
-
-
-
-
-
-
-
-
1350
1500
-
-
-
DVE-EC Blue duct connection on top
L, DVE-EC Blue
750
750
* Space needed for extracting the fan.
750
750
750
750
1050
1050
1200
Danvent DV • Plug Fan DVE
Fan fitted to the lower part of a double height unit.
DVE 10-150 duct connections
DVE 190-240 duct connections
Connection variants
Duct connection on top
F
185
Dimensions
Size
10
15
20
25
30
40
50
60
80
100
120
150
190
240
D
900
1050
1200
1350
1500
1650
1950
2100
2100
2300
2520
2820
3120
3420
E
350
450
500
600
650
750
900
1000
1150
1300
1450
1600
1950
2250
F, DVE-EC Blue
350
450
500
600
600
600
900
1000
1150
1300
1450
-
-
-
F, DVE-PM/AC
350
450
500
600
650
750
900
1000
1150
1300
1450
1600
1500
1500
| 55
56 |
Danvent DV • Sound Attenuator DVD
Sound Attenuator DVD
Function
Sound attenuator DVD is used to
reduce the sound power level from
the air handling unit to the duct
system.
Construction
The sound attenuator is an absorption
attenuator with baffles. The baffles
are surface treated in order to prevent the absorption material fibres
from being carried away.
Variants
1 – As an option, the air handling unit
casing can be delivered with large
inspection doors for easy cleaning.
2–B
affles with a synthetic lining,
ideal for wet cleaning. Each baffle
is enclosed in a stainless steel
frame. The air handling unit casing has large inspection doors,
which makes it possible to pull
out the baffles for cleaning.
Mid-frequency Hz
Attenuation dB
63
125
250
500
1000
2000
4000
8000
DVD-900
5
11
17
25
36
39
36
28
DVD-1200
7
15
23
32
43
46
43
36
Danvent DV • Sound Attenuator DVD
Sound attenuator fitted to a single height unit.
DVD 10-150
Sound attenuator fitted to a double height unit.
H1: Single height unit
H2: Double height unit
DVD 190-240
Dimensions
Size
10
15
20
25
30
40
50
60
80
100
120
150
190
240
B
970
1120
1270
1420
1570
1720
2020
2170
2170
2370
2590
2890
3190
3490
2470
H1
520
595
670
745
820
895
1045
1120
1270
1420
1570
1720
2170
H2
970
1120
1270
1420
1570
1720
2020
-
-
-
-
-
-
-
L
900
900
900
900
900
900
900
900
900
900
900
900
900
900
L
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
1200
| 57
58 |
Danvent DV • Inspection Section DVI
Inspection Section DVI
Function
DVI is used where the option of
service, inspection or measuring is
required, before or after an air
hand­ling function.
Construction
Inspection section DVI consists of an
empty unit casing with an inspection
door.
Accessories
Inspection window fitted into the
access door. Bulkhead lamp with
external switch.
DVI 10-150
H1: Single height unit
H2: Double height unit
DVI 190-240
Dimensions
Size
10
15
20
25
30
40
B
970
1120
1270
1420
1570
1720
2020
2170
2170
2370
2590
2890
3190
3490
H1
520
595
670
745
820
895
1045
1120
1270
1420
1570
1720
2170
2470
970
1120
1270
1420
1570
1720
2020
-
-
-
-
-
-
-
H2
50
L
DVI 10-150: 300 - 450 - 600 -750 - 900 - 1050 - 1200 - 1350 - 1500
L
DVI 190-240: 300 - 450 - 600 -750
60
80
100
120
150
190
240
Danvent DV • Empty Section DVO
Empty Section DVO
Function
Used in units where space is required
to fit a component, e.g. a temperature sensor, or to have the option of
applying an extra air handling function at a later date.
Accessories
Inspection window fitted into the
access door. Bulkhead lamp with
external switch.
Construction
Empty section DVO consists of an
empty unit casing, where the side
panels are assembled with screws.
DVO 10-150
H1: Single height unit
H2: Double height unit
DVO 190-240
Dimensions
Size
10
15
20
25
30
40
B
970
1120
1270
1420
1570
1720
2020
2170
2170
2370
2590
2890
3190
3490
H1
520
595
670
745
820
895
1045
1120
1270
1420
1570
1720
2170
2470
970
1120
1270
1420
1570
1720
2020
-
-
-
-
-
-
-
H2
L
50
150 - 300 - 450 - 600 -750 - 900 - 1050 - 1200 - 1350 - 1500
60
80
100
120
150
190
240
| 59
60 |
Danvent DV • Outdoor Air Section DVY
Outdoor Air Section DVY
Function
Outdoor air section DVY is used for air
intake and outlet in roof units for
combinations of Danvent DV 10-150.
DVY has air intake through the end of
the unit, and outlet of exhaust air
through the back wall of the unit,
opposite the inspection side.
Construction
Outdoor air section DVY consists of
an air handling unit casing with
inspection door. The openings for air
intake and outlet have louvers for
effective protection against rain and
snow.
Type 1
Type 2
Exhaust air
Supply air
Dimensions
Size
10
15
20
25
30
40
50
60
80
100
120
150
B
970
1120
1270
1420
1570
1720
2020
2170
2170
2370
2590
2890
H
970
1120
1270
1420
1570
1720
2020
2240
2540
2840
3140
3440
L
520
670
820
820
970
1120
1120
1420
1420
1570
1720
1720
Danvent DV • Supporting Legs • Base Frame DVZ
| 61
Supporting Legs
100
Function
Units in sizes DV 10-40 for indoor
installation can be supplied with supporting legs.
Construction
Supporting legs are made of sturdy
galvanized steel. They are 100 mm
high, and have feet which are adjustable from 30-55 mm.
Base Frame
DVZ
Function
Units in sizes DV 10-150 for indoor
installation can be supplied with base
frame in height 150 mm or 250 mm,
and have feet which are adjustable
from 30-55 mm. Units in sizes DV
190 and DV 240 are always supplied
with 150 mm base frame. Units in
sizes DV 10-150 for outdoor installation are always supplied with 250
mm base frame. Minimum length of
base frame is 740 mm. Maximum
length of base frame is 6200 mm.
Units which are longer, are supplied
divided on two or more base frames.
Base frame DVZ is self-supporting,
ø 50
but as a minimum it must be supported on the longitudinal profiles for
each 1500 mm. Inserted, longitudinal
profiles on units in sizes DV 50-240
do not require support.
Construction
The base frame consists of strong,
galvanized steel profiles, in either
150 mm or 250 mm height assembled with bolts. For indoor installation
feet are supplied, which are adjustable from 30-55 mm. As extra protection against corrosion 250 mm base
frames for outdoor installation can be
supplied hot dip galvanized.
Dimensions
B
L
Unit width
Unit length
Indoor unit
150 og 250
H
Roof unit
250
L
B
62 |
Danvent DV • Dimensions for Ducts
Dimensions for Ducts
Double height unit
DV 10-150
Dimensions for ducts on the following unit functions:
Damper DVA 190-240
See page 20
Mixing damper DVP 190-240
See page 26
Damper DVB
See page 22
Fan DVE, outlet on top, 190-240
See page 52
Mixing damper DVM
See page 24
DV 10-50
DV 60-150
DV 10-50
DV 60-150
Dimensions for ducts on all other unit functions:
Single height unit
DV 10-150
Double height unit
DV 10-150
Single height unit
DV 190-240
Single height unit
DV 10-150
185
185
Dimensions for ducts on other unit functions
Size
10
15
20
25
30
40
50
60
80
100
120
150
190
240
D
900
1050
1200
1350
1500
1650
1950
2100
2100
2300
2520
2820
3120
3420
E
350
450
500
600
650
750
900
1000
1150
1300
1450
1600
1950
2250
The Danvent DV can be supplied with rigid or flexible duct connection part DVT. See page 63.
Danvent DV • Duct Connection Part DVT
| 63
Duct Connection Part DVT
Type 3
DVT 10-240
Type 1
DVT 10-150
Rigid connection part for connecting to 20 mm
LS profile for C-rail.
Rigid connection part for connecting to 30 mm
EP/LSM profile with holes in the corners.
Type 4
DVT 10-240
Type 2
DVT 10-150
Flexible connection part for connecting to
20 mm LS profile for C-rail. For mounting in
continuation of rigid connection part.
Flexible connection part for connecting to 30 mm
EP/LSM profile with holes in the corners.
For mounting in continuation of rigid connection part.
Variant
A - Damper DVA, mixing damper DVP
B - Damper DVB, mixing damper DVM
C - Others
Function
Connection part DVT is used when connecting duct work to the Danvent DV
air handling unit, either as rigid connection or as rigid and flexible connection.
Dimensions
Size
Variant A
Variant B
Variant C
10
15
20
25
30
40
50
60
80
100
120
150
190
240
D
-
-
-
-
-
-
-
-
-
-
-
-
2600
2800
E
-
-
-
-
-
-
-
-
-
-
-
-
1500
1800
D
500
600
800
900
1100
1200
1500
1600
1700
1800
2000
2300
2600
2800
E
200
200
300
300
300
400
400
500
600
700
700
700
1000
1200
D
900
1050
1200
1350
1500
1650
1950
2100
2100
2300
2520
2820
3120
3420
E
350
450
500
600
650
750
900
1000
1150
1300
1450
1600
1950
2250
Avedøreholmen 88
DK-2650 Hvidovre
Tel. +45 87 38 75 00
[email protected]
www.systemair.dk
Systemair DK • September 2015 • V9
Systemair A/S
Ved Milepælen 7
DK-8361 Hasselager
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertisement