Heat recovery unit WHR DA - J.E. StorkAir

Utility
Heat recovery unit
WHR DA
Important features
• Balanced ventilation with heat recovery
• Controlled air supply and exhaust
• Heat recovery yield 90%
• DC motors with constant volume principle
• Working point easily adjustable
• Available with 100% bypass including
automatic drive
• Easy to connect 'plug and play'
• Available with hot water and cooling
• Qualifies for Dutch tax-relief scheme relating to
the purchase of energy-efficient equipment
General
The roof-mounted WHR DA heat
recovery unit has been developed
for balanced ventilation systems in
non-residential buildings or multistorey
dwellings. Air displacement
of 800 to 4,400 m³/h. Net
connection voltage is single-phase
230V 50Hz..
Casing
The casing is constructed of
double-walled panels with 44 mm
thick interior insulation and a top
with an anti-leak edge. The panels
are made of sendzimir plates which
have a weather resistant
Goosewing Grey (RAL 7044)
Plastisol coating on the outside and
a special polyester coating on the
inside (RAL 7035). These panels
are thermal-bridge free and have
very good damping qualities. The
cabinets are fitted with an extractor
hood, intake drip-tray and UNP
frame for mounting on a roof curb
construction. The circular air
connections (SPIROsafe) can be
found within the frame at the
bottom. The condensation removal
unit and battery connections are at
the rear for the WHR DA 9100 and
9200 without bypass. In other
types they are located at the front.
The electronics sit at the front
behind a designer panel. For
checking and maintenance, all
components are accessible via
doors
Fans
Direct drive low-energy DC
ventilators are used for air supply
and exhaust systems. The motors
are mounted in vibration free
mounting rubbers and fitted with
maintenance free, sealed ball
bearings.
Adjustment/control
The unit maintains a constant
volume of air. Maximum capacity
can be programmed using a
display. The capacity can be set to
three positions using the SAG 0-3
CV switch (previously SA 0-3
CVC).
Filters
Easily replaceable compact filters
have been fitted in the supply and
exhaust air flow. The supply air flow
is fitted with an F7 filter, the
exhaust air flow with a G4 filter.
Heat exchanger
The high yield counterflow
exchanger is made of high-quality
aluminium and, depending on the
outside temperature and humidity
indoors, has a thermal yield of
about 90%. A condensation tray is
situated under the heat exchanger.
A waste water connection is
required.
Frost protection
Under extreme conditions,
condensation in the exchanger can
freeze. In order to avoid this, a frost
protection regulator has been fitted,
which slows or switches off the
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Utility
Heat recovery unit
WHR DA
supply fan for a short period of time
when there is a risk of freezing.
Bypass (B)
The unit can be supplied with an
100% bypass. This bypass is
mounted next to the heat
exchanger and has two valves
which can be automatically
controlled via a single servo motor.
When the bypass is open, exhaust
air is fully diverted past the
exchanger. This does not affect the
filtering process. This allows for socalled
'free' cooling in the evenings
and night-time, for example. The
bypass means the cabinet is 350
mm wider.
Air direction
The fresh-air intake sits on the left
and the used-air extraction unit on
the right. From inside the building,
the exhaust is left and intake is
right of the cabinet. A mirror version
(left) is available. The unit is also
available with top connections.
Power supply and regulation
Behind the designer front sit
connection clamps and the
integrated operating switch. A
power supply of 230V single phase
50Hz is connected to the operating
switch. There is also a control box
(TAC3 REC) behind this front panel
which automatically regulates the
bypass flap and the frost
protection. The required working
point can also be set using the
display. An alarm function is
included as standard which
activates if the fan fails. This
malfunction alarm can also be
activated by a pressure difference
switch above the filters (optional).
Cabling between the control box
and the external control switch
(SAG 0-3 CV) and the alarms
should be equipped with a shielded
low-voltage cable.
Energy Investment Deduction
(EIA)
The Energy Investment Deduction
is a tax-relief scheme created by
the Dutch Finance and Economic
Affairs ministries. The EIA is
designed for entrepreneurs who
wish to invest in energy-saving and
sustainable technology in their
business. Use of a WHR unit not
only reduces energy bills, but also
allows the deduction of up to 44%
of the purchase price from the
company's taxable profits. Our
adviser would be happy to tell you
more. Go to www.senternovem.nl/
EIA. .
Options
• Hot water preheater (W)
In order to bring the supply air
temperature to the required final
value, the WHR DA can be fitted
with a hot water reheater. The
capacity and connections of this
reheater can be found in the
technical specifications. The
reheater is fitted with rightangled
connections inside the
cabinet
• Cooler (K)
A cold water cooler or direct
evaporator can be fitted for
cooling. This reduces the
temperature of the supply air.
The capacity of the cooler to be
applied can be found in the
technical specifications. The
cooler is fitted in a leakage tray
in order to catch condensation.
The leakage tray has a corrosion
proof coating on the inside. A
polypropylene drip catcher is
fitted as standard in the air
direction behind the cooler,
running into the leakage tray.
• Siphon
An heated siphon can be
supplied to drain condensation.
zie tabel 0.1.
Electrical connection
For wiring diagrams, please refer to
the WHR B/DA manual.
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Utility
Heat recovery unit
WHR DA
Technical data
Conn. Waterz. resistance. Max. cap. cap. max. cap.
Heater Heater Heater Cooler Cooling till
DN kPa kW kW kW
WHR DA 9100 20 3.7 5.3 4.09 6.5
WHR DA 9200 20 4.7 9.44 7.88 12.6
WHR DA 9250
WHR DA 9300 20 10 18.18 16.94 27.1
WHR DA 9400 20 12.7 25.18 22.19 35.5
tabel 0.1
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Utility
Heat recovery unit
WHR DA
Dimensions
For dimensions, refer to the
illustration and corresponding table.
0.1.
0.1: SUP - toevoerlucht, ETA - retourlucht, EHA - afvoerlucht, ODA - buitenlucht.
Dimensions in mm
Unit type L W H A B C D E F G I K Weight kg.
WHR DA 9100 1400 700 1050 250 540 270 315 141 145 80 1310 185 270
with bypass 1400 1050 1050 250 890 620 315 141 145 80 1310 185 325
with cooler 1750 1050 1050 250 890 620 315 141 140 80 1590 185 410
WHR DA 9200 1750 1050 1050 355 890 445 355 141 230 80 1590 230 325
with bypass 1750 1400 1050 355 1240 795 355 141 230 80 1590 230 425
with cooler 2100 1400 1050 355 1240 620 355 141 230 80 1940 250 515
WHR DA 9250 1750 1050 1400 400 890 445 335 141 230 80 1590 275 600
with bypass/with cooler 2100 1400 1400 400 1240 795 335 141 230 80 1940 275 670
WHR DA 9300 2450 1050 1400 450 890 445 450 141 285 80 2290 340 700
with bypass 2450 1400 1400 450 1240 795 450 141 285 80 2290 340 850
with cooler 2800 1400 1400 450 1240 620 450 141 285 120 2640 340 950
WHR DA 9400 2450 1400 1400 560 1240 795 560 141 310 80 2290 310 800
with bypass 2450 1750 1400 560 1590 795 560 141 310 80 2290 310 925
with cooler 2800 1750 1400 560 1590 795 560 141 310 120 2640 310 1100
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Utility
Heat recovery unit
WHR DA
WHR DA 9100
Position Capacity Pressure Consumption Consumption Noise levels Weight
Qv Δ P st power current Pers
m³/h Pa Wel A dB(A) Kg
WHR DA 9100
(1) Hoog 800 200 670 4.1 74 275
1000
Pa
WHR DA 9100
900
800
700
600
500
400
300
200
100
0
200
400
600
800
1000
1200
1400
1600
1800
m³/h
0
56
111
167
222
278
333
389
444
500
l/s
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Utility
Heat recovery unit
WHR DA
WHR DA 9200
Position Capacity Pressure Consumption Consumption Noise levels Weight
Qv Δ P st power current Pers
m³/h Pa Wel A dB(A) Kg
WHR DA 9200
(1) Hoog 1500 200 900 5.5 75 325
1000
Pa
WHR DA 9200
900
800
700
600
500
400
300
200
100
0
300
600
900
1200
1500
1800
2100
2400
2700
m³/h
0
83
167
250
333
417
500
583
667
750
l/s
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Utility
Heat recovery unit
WHR DA
WHR DA 9250
Position Capacity Pressure Consumption Consumption Noise levels Weight
Qv Δ P st power current Pers
m³/h Pa Wel A dB(A) Kg
WHR DA 9250
(1) Hoog 2525 200 1000 11.5 80 600
1000
Pa
WHR DA 9250
900
800
700
600
500
400
300
200
100
0
300
600
900
1200
1500
1800
2100
2400
2700
m³/h
0
83
167
250
333
417
500
583
667
750
l/s
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Utility
Heat recovery unit
WHR DA
WHR DA 9300
Position Capacity Pressure Consumption Consumption Noise levels Weight
Qv Δ P st power current Pers
m³/h Pa Wel A dB(A) Kg
WHR DA 9300
(1) Hoog 3400 200 2370 13.50 82 600
2000
Pa
WHR DA 9300
1800
1600
1400
1200
1000
800
600
400
200
0
500
1000
1500
2000
2500
3000
3500
4000
4500
m³/h
0
139
278
417
556
694
833
972
1111
1250
l/s
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Utility
Heat recovery unit
WHR DA
WHR DA 9400
Position Capacity Pressure Consumption Consumption Noise levels Weight
Qv Δ P st power current Pers
m³/h Pa Wel A dB(A) Kg
WHR DA 9400
(1) Hoog 4400 200 3500 20.5 86 800
1000
Pa
WHR DA 9400
900
800
700
600
500
400
300
200
100
0
600
1200
1800
2400
3000
3600
4200
4800
5400
m³/h
0
167
333
500
667
833
1000
1167
1333
1500
l/s
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Utility
Heat recovery unit
WHR DA
Noise level data
The table below contains noise
data for the WHR DA. The table
below also includes the damping
qualities in dB applying to all types
of WHR DA.
Sound
Fan
Sound dB ref. ־‎10‎ ¹² W
Type Level 125Hz 250Hz 500Hz 1000Hz 2000Hz 4000Hz 8000Hz
WHR DA 9100 Hoog 80 75 68 70 63 58 53
WHR DA 9200 Hoog 82 77 70 72 65 60 55
WHR DA 9250 Hoog 87 82 75 77 70 64 60
WHR DA 9300 Hoog 88 83 76 78 71 66 61
WHR DA 9400 Hoog 92 87 80 82 75 70 65
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Utility
Heat recovery unit
WHR DA
Switch and control equipment
For switch and control equipment,
please refer to the relevant
chapters.
controls
page
CO2- sensor (0-10V) 495
DC speed switch (SAG 0-3 CV) 523
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Utility
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