DVU HP brochure uk 06 2015 V3
Thickness of panel and door plates 0.8 mm
Panel plates must be protected by aluzink 185
Surface treatment of panel and door plates about 5 µm
Thickness of insulation in panels 50 mm
Insulation must be of high-density mineral wool - 50 kg/m3
Mineral wool must be the non-combustible type
Mineral wool must be re resistant in class A1 according to DIN 4102.
Panels must be tted with durable exible sealing strips (sealing strips welded on the panels as one united strip without holes).
Inspection doors must be tted with long term exible sealing strips.
Sealing between sections by durable sealing strips and sections must be efciently kept together with a lock system.
All brackets, covers and frames of steel must be protected by aluzink 185.
Inspection doors must be mounted using solid hinges with easily removable stainless steel pins for easy removing of the door, if there is no
room for normal opening of the doors.
Protection and safety measures to avoid injury
Inspection doors must be provided with locks on heavy-duty handles.
Doors can only be opened using a special key, thus meeting the specications of the European Machinery Directive 2006/42/EC and all units
must be CE-labelled. Units must be provided with a User Manual - written according to general guidelines for information in User Manuals.
Description of protection and safety measures as well as risk analysis must be helpful for installers by the creation of a new CE-labelling after
integration of the unit in complete ventilation systems. The User Manual must be delivered with the unit - printed on paper as well as on a CD.
Fan and motor installed on anti-vibration mounts
The frame with motor and fan must be placed on efcient anti-vibration mounts to reduce transformation of vibrations and sound to the casing
considerably. Fan inlet must be connected to unit casing with exible connection.
Fan and motor - supply air
Single inlet plug fan with open outlet into the air handling unit
Standard efcient fan impeller tted directly to the motor shaft and impeller must be fully balanced statically as well as dynamically
IE2 high efcient motorsaccording to IEC-Norm
3 x 400 V
Motor 1.10 kW
Consumed power from main power supply for the motor and frequency converer at nominal supply air capacity and nominal external pressure
for this project - 0.77 kW.
Fan can be pulled out for cleaning and maintenance.
Fan and motor - extract air
Single inlet plug fan with open outlet into the air handling unit
Standard efcient fan impeller tted directly to the motor shaft and impeller must be fully balanced statically as well as dynamically
IE2 high efcient motorsaccording to IEC-Norm
3 x 400 V
Motor 1.10 kW
Consumed power from main power supply for the motor and frequency converter at nominal extract air capacity and nominal external pressure
for this project - 0.77 kW
Fan can be pulled out for cleaning and maintenance.
Heat recovery, double high unit with rotary heat exchanger
Rotary heat exchanger for the transfer of heating and cooling from the extract air to the supply air.
Drive system with gear motor and separate control system to achieve variable rotor speed. Lowest speed of only 3 % of the maximum speed
ensures accurate temperature control. Sensor installed to control the rotation and alarm installed to activate signal for malfunction.
Rotary exchanger of sorption type with the ability to dehumidify supply air during the summertime, when the temperature and water content in
the extract is below the temperature and water content in the outdoor air. High efcient
The complete exchanger with rotor, sealing brushes, shaft, bearings and drive system is installed in a separate cabinet to be pulled out for
cleaning and maintenance.
Winter
Supply air: Temperature before/after rotor: -12.0/18.6 C
Extract: Temperature before/after rotor: 22.0/-8.1 C
Supply air: Rel. humidity before/after rotor: 90/43 %
Extract: Rel. humidity before/after rotor: 40/99 %
Capacity: 50.55 kW
Temperature efciency rate: 90.0 %
Summer
Supply air: Temperature before/after rotor: 27.0/23.4 C
Extract: Temperature before/after rotor: 23.0/26.6 C
Supply air: Rel. humidity before/after rotor: 60/47 %
Extract: Rel. humidity before/after rotor: 40/55 %
Capacity: 19.73 kW
Temperature efciency rate: 90.0 %
Specication text
Integrated cooling compressor unit with precooling via cooling recovery by heat exchanger
The integrated cooling unit must be a complete stand-alone cooling compressor system with a direct expansion cooling coil in the supply air,
and the system must be installed in a separate section including a separate control system taking care of all safety functions as well as the
control of the capacity delivered by frequency converter regulated compressor. The main controller in the cabinet for the air handling unit must
deliver a 0-10V DC signal for control of the cooling capacity. The separate controller for the compressor must convert the signal to the cooling
capacity from 5% to 100% of the cooling system ability. To reduce the risk of cut off due to overheating, the system must have an
automatic capacity reductions system to promote maximum reliability. The system must be provided with refrigerant and tested for easy start
up on the site. The power supply for the cooling unit must be delivered by the main cabinet in the air handling unit. The cooling system must
be delivered without supply disconnecting device.
The condenser must be placed in the extract air ow after the rotary heat exchanger with the advantage that the outdoor air is precooled by
the rotary heat exchanger, when the extract air temperature is lower as the outdoor air temperature. Due to the reduced outdoor air
temperature before the cooling coil the capacity of the total system is increased and/or the electricity consumption of the cooling compressor
must be reduced.
The system must be provided with a 4-way valve in the cooling compressor system for heating of the supply air, if this is demanded.
Supply/Extract by cooling
Air ow - x m3/h
Pressure drop – supply/extract - xx Pa
Air temperature before/after for supply and extract - xx andxx °C
Air relative humidity before/after for supply and extract xx and xxx %
Capacity xxx kW
Sensible cooling in % of total cooling x %
Face velocity xx m/s
Condensate xx l/min
Refrigerant R410a
Refrigerant temperature xx °C
Absorbed power, at operating point xx kW
Max. operating frequency xx Hz
Max. absorbed power xx kW
Energy Efciency Ratio - EER - Supply air (COP cooling), at operation point - xx
Coefcient of performance - COP - Extract air (COP heating), at operation point - xx
EER total, heat exchanger + cooler: xx
External connections
Power supply 3*400V+N+PE, 50Hz 25 A
Start / Stop signal
Control signal 0 - 10 V,DC
Damper - outdoor air/supply air - mounted inside the unit
Damper with damper blades that are aerodynamically formed aluminum proles and they must be mounted in an aluzinc protected steel frame.
Damper blade bearings must be made of durable synthetic material with large bearing surface. Damper blade pivoting system must be built of
steel rods and maintenance free brass bushes. Sealing strips must be made of EPDM rubber. Air tightness classication must be class 3
according to EN 1751.
Damper - extract/exhaust air - mounted inside the unit
Damper with damper blades that are aerodynamically formed aluminum proles and they must be mounted in an aluzinc protected steel frame.
Damper blade bearings must be made of durable synthetic material with large bearing surface. Damper blade pivoting system must be built of
steel rods and maintenance free brass bushes. Sealing strips must be made of EPDM rubber. Air tightness classication must be class 3
according to EN 1751.
Bag lter - supply
Filter classication according to EN 779. Filter must be of glass bre material with 25 mm standard frames. Rubber sealing strips must be xed
to the frame in the casing. The lter frame must be pressed against the sealing strips and locked into place by a sliding bar system. The
system must be easy to operate by large handles.
Filter class: F7
Filter size: 2x[592x592]
Filter length 535 mm
Dimensioning pressure drop: 105 Pa
Velocity, face area: 1.43 m/s
Velocity, lter area: 0.08 m/s
Bag lter - extract
Filter classication according to EN 779. Filter must be of glass bre material with 25 mm standard frames. Rubber sealing strips must be xed
to the frame in the casing. The lter frame must be pressed against the sealing strips and locked into place by a sliding bar system. The
system must be easy to operate by large handles.
Filter class: F7
Filter size: 2x[592x592]
Filter length 535 mm
Dimensioning pressure drop: 105 Pa
Velocity, face area: 1.43 m/s
Velocity, lter area: 0.08 m/s
Specification text example.
20.2.2015 Air handling unit design | SystemairCAD Version C2015-01.00.00-HP-2 | Danvent DV20
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Air relative humidity before/after 39.0/19.9 97.0/100.0 %
Capacity 13.43 20.70 kW
Condensate 0.1 l/min
Used capacity at working conditions 62.9 %
Absorbed power, at operating point 3.2 kW
COP, compressor system 4.1
COP total, compressor system + rotary heat exchanger 20.5
SUMMER
Air temperature before/after 27.0/16.0 22.0/44.7 °C
Air relative humidity before/after 60.0/99.6 40.0/11.2 %
Capacity 20.74 25.84 kW
Sensible cooling in % of total cooling 66 %
Condensate 0.2 l/min
Used capacity at working conditions 64.9 %
Absorbed power, at operating point 5.4 kW
EER, compressor system 0.3
EER total, compressor system + rotary heat exchanger 0.3
Tube material Cu Cu
Fin material Al Al
Fin spacing 2.5 2.5 mm
Drip tray material Stainless steel Stainless steel
Refrigerant / Amount R410A kg
Compressor ZPD54+ZP54
Power supply
Heat pump
Supply Extract
Air flow 1.00 1.00 m³/s
Pressure drop 53.5 73.9 Pa
Face velocity 1.5 1.5 m/s
WINTER
Air temperature before/after 11.4/22.0 -5.3/-11.2 °C
SystemairCAD
Design Programme
SystemairCAD is the name of
Systemair’s design programme for
modular and compact air handling
units. The programme is very user-
friendly and makes it possible in a
very easy and fast way to combine
required air handling unit functions
via an intelligent 3D-model. The DVU-
HP can be selected as a function in
SystemairCAD. When selected, an
overview of capacities and energy
consumption levels will be presented.
The most important preconditions are
set as default, but can easily be adju-
sted to any specific project. When the
air handling unit has been designed,
SystemairCAD automatically conducts
all calculations and provides full tech-
nical documentation. The technical
documentation features all relevant
technical data and a specification text
applicable for the tender documents.
Everything that must be included in
any professional project. The energy
consumption levels are visible from
the pdf-printout with full technical
documentation on all components.
SystemairCAD technical documentation print-out example.
DVU-HP
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