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Heat recovery units
Save EnergyReduce Your ExpensesTake Care of the Environment
HEATINGVENTILATIONAIR-CONDITIONINGTANGRA
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Peoplewhostayindoorsmostofthetimeneedfreshair.Thisaffectstheirhealth,efficiencyandmuchmore.
Exhaustingairoftechnologicalsystems(hot,humidorharmful)hastobecompensated.
Theinstallationssupplyingfreshairarebigenergyconsumers forheatinginwinterandcooling insummer.Thecostofthis
energyforventilationiscommensuratewiththatforheatingbutstillnotadequatelyassessed.
Nowadays there systemswhich can reduce theseexpenseswith40%up to 80%. The correct choice is tobe subjected to
accurateeconomicanalysesoftheinitialinvestmentaswellastheexpensesoftheirexploitation.
Thebasicfactorstobeconsideredare:
Dailyoperation(hourperday);
Ambientconditions;
Energy
costs;
Initialinvestments;
Maintenanceexpenses.
Lifetimeoftheinstallation;
System withoutrecuperation
E=0%
System with plateheat exchanger
E=45 55%
System with highefficiency plateheat exchanger
E=60 70%
System with rotaryheat exchanger
E=65 75%
System with plateheat exchanger and
heat pump
E=75 85%
0
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
-15 -10 -5 0 5 10
Q ,kWh
text ,
ENERGY CONSUMPTION PER YEAR, kWh
AHU - A
0
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
-15 -10 -5 0 5 10
Q ,kWh
text ,
ENERGY CONSUMPTION PER YEAR, kWh
AHU - A
AHU - B
0
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
-15 -10 -5 0 5 10
Q ,kWh
text ,
ENERGY CONSUMPTION PER YEAR, kWh
AHU - A
AHU - C
0
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
-15 -10 -5 0 5 10
Q ,kWh
text ,
ENERGY CONSUMPTION PER YEAR, kWh
AHU - A
AHU - D
0
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
-15 -10 -5 0 5 10
Q ,kWh
text ,
ENERGY CONSUMPTION PER YEAR, kWh
AHU - A
AHU - E
AHU - A
RECAHU - B
AHU - CREC REC
AHU - D
AHU - E REC
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The initial investments for an energy saving system is higher, but the operation expenses are
significantlylower
Thedatashownarenotuniversal.These
parametersarevalidforthefollowing
conditions:
Bulgaria,
Sofia;
Indoortemperature22oC;
Airvolume3000m3/h;
Dailyoperation10h.of24h.
Installationlifetime10years;
Energyprice0.1Euro/kWh;
8%annualexpensesformaintenance;
Growthoftheenergyprice12%peryear;
TheinitialexpensesforHVACsystemare
tentative;
SystemtypeDallowsmoistexchange;
System
type
E
allows
cooling
during
the
summertime.
theseareyourlostmoney
Thereisapreliminarytrendforgrowingofenergypriceforthelast10years.
Thereisnodoubtaboutthefollowing:
Thepriceoftheenergywillnotgodown!
The
quality
of
the
microclimate
is
something
with
which
we
cannot
make
a
compromise!
Theprotectionoftheenvironmentisourobligationtothefuturegeneration!
-
5 000
10 000
15 000
20 000
25 000
30 000
35 000
40 000
45 000
50 000
0 1 2 3 4 5 6 7 8 9 10
Amount,
Years
Anual ex penc es w ith acc umulation,
A B C D E
0
10
20
30
40
50
60
70
80
90
100
2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010
US $/BarrelPrice trend of oil
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HeatrecoveryunitsapplicationVentilationandairconditioningsystemsupplyingfreshair:
Officeandresidentialbuildings;
Hotels,restaurants,coffeebars,nightclubs;
Sporthall,gym,swimmingpool;
Hospitals,schools,laboratories;
Cinema,theatersconcerthalls;
Food
industry
bakery;
Technologicalventilation,workshops.
Tangra HeatrecoveryunitsStandardrangeEVBAL
Middlerangelowpressure EVBCBM
Middlerangehighpressure EVBCBP
High
efficiency
range
EVB
TOP/
PLUS
Rotaryheatexchangersrange EVBROT
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www.tangra.bgWe reserve the right to introduce alternations both in design and technical data without prior notice, due to continued product development.
HEAT RECOVERY UNITS
EVB-AL
Units for secondary use of energy of the exhaust air in ventilation and air-conditioning systems.Operation temperatures from -20
oC up to 50
oC.
Designed to work with clean air in nonaggressive and non-sparkling environment.
CONSTRUCTION
Supporting construction, made by anodized aluminum profiles.
Thermo and sound insulated panels, powder coated RAL7035;
o Internal insulation Firex 10 mm, fire resistance class: 0-BS 476 Part 6; class 1 BS 476 Part7;
o Sandwich panels 25 mm with XPS insulation class M1 or fiberglass class M0;
Cross flow aluminum plate heat exchanger with efficiency up to 55%;
Double inlet direct drive centrifugal fans 230V, 50Hz, IP 20 (higher protection by request); Air filters class G4 EN 779:2002;
Rectangular or round duct connector;
Drain tray with connection;
Configuration allows easily modifying position of the filters, fans and duct connectors;
Service doors from the bottom and from the side;
By-pass with multiple leaf damper by request;
Heating/ cooling coil by request;
Hanging support or basic steps by request;
Roof panels for outdoor installation by request.
The construction allows horizontal () or vertical (V) installation.
05 01.01
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www.tangra.bgWe reserve the right to introduce alternations both in design and technical data without prior notice, due to continued product development.
HEAT RECOVERY UNITS EVB AL
INSTALLATIONHorizontal installation H
Vertical installation - V
Type sizeMax.
capacitym
3/h
Dimensions, mm
L H max C D G IVB PP-04-H 500 800 280 800 320 215 150 200 215 150
VB AL-06-H 700 1000 350 1000 390 225 180 250 225 180
VB AL-10-H 1000 1000 420 1300 460 235 210 280 300 250
VB AL-20-H 2200 1060 480 1500 520 300 260 315 300 300
VB AL-30-H 3000 1200 580 1600 620 265 290 355 400 300
VB AL-35-H 3500 1200 680 1600 720 335 290 355 400 400
Type sizeMax.
capacitym
3/h
Dimensions, mm
B H L Bmax C D G I KVB PP-04-V 500 280 800 800 320 150 150 200 215 150 45
VB AL-06-V 700 350 1000 1000 390 180 225 250 225 180 50
VB AL-10-V 1000 420 1000 1300 460 210 235 280 250 300 85
VB AL-20-V 2200 510 1060 1500 550 260 300 315 300 300 105
VB AL-30V 3000 580 1200 1600 620 290 265 355 300 400 90
VB AL-35-V 3500 680 1200 1600 620 290 335 355 400 400 140
Heat recovery units EVB-L
05 01.02
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www.tangra.bgWe reserve the right to introduce alternations both in design and technical data without prior notice, due to continued product development.
Heat recovery units EVB-L
05 01.03
HEATRECOVERYUNITSEVBALH (BYPASSBS)
By-pass with internal multiple leaf damper;
Manual control - by request;
Belimo ON-OFF actuator standard execution
BY PASS BS
Type size
Dimensions, mm
L H max C D G I VB AL-06-BS 1050 450 1200 520 225 180 225 180 250
VB AL-10-BS 1050 520 1300 590 235 210 300 250 280
VB AL-20-BS 1060 650 1500 720 300 260 300 300 315
VB AL-30-BS 1200 750 1600 820 265 290 400 300 355
VB AL-35-BS 1300 850 1600 920 335 290 400 400 355
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www.tangra.bgWe reserve the right to introduce alternations both in design and technical data without prior notice, due to continued product development.
Heat recovery units EVB-L
05 01.04
HEAT
RECOVERY
UNITS
EVB
AL
H
(HEAT+BY
PASS
HBS)
By-pass with internal multiple leaf damper;
Manual control - by request;
Belimo ON-OFF actuator standard execution
Two rows water coil Cu/Al;
Four rows water coil (cooling) - by request.
HEAT + BY PASS - HBS
Type size Dimensions, mm
L H max C D G I dVB AL-06-HBS 1050 450 1600 520 225 180 225 180 250
VB AL-10-HBS 1050 520 1600 590 235 210 300 250 280
VB AL-20-HBS 1200 650 1900 720 300 260 300 300 315 1
VB AL-30-HBS 1300 750 1900 820 265 290 400 300 355 1
VB AL-35-HBS 1300 850 1900 920 335 290 400 400 355 1
d
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www.tangra.bgWe reserve the right to introduce alternations both in design and technical data without prior notice, due to continued product development.
Heat recovery units EVB-L
05 01.05
Typesize FanNominalpower,
W
Ratedcurrent
A
EVB PP 04 CBM/2 133/190 2x185 0.8
Type size FanNominal power
WRated current
A
BV AL- 06
BM/2-146/180 2
220 1,01
EVB AL - 06
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www.tangra.bgWe reserve the right to introduce alternations both in design and technical data without prior notice, due to continued product development.
Heat recovery units EVB-L
05 01.06
Type size FanNominal power
WRated current
A
BV AL-10 BM/4-180/180 2147 1,5
BV AL-10/3V BM/4-180/180 V 2147 1,33
Type size FanNominal power
WRated current
A
BV AL- 20 BM/4-240/240 2370 4,2
BV AL- 20/3V BM/4-240/240 3V 2370 3,8
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www.tangra.bgWe reserve the right to introduce alternations both in design and technical data without prior notice, due to continued product development.
Heat recovery units EVB-L
05 01.07
0
100
200
300
400
500
600
0 500 1000 1500 2000 2500 3000 3500
H,
Pa
EVBAL35
V,m3/h
E=50%
E=48%
E=46%
E=46%
+600/6002R
1
1
Type size FanNominal power
WRated current
A
BV AL-30 BM/4-270/200 2370 4,0
BV AL-30/3V BM/4-270/20 3V 2370 3,0
Type size FanNominal power
WRated current
A
BV AL- 35 BM/4-270/270 2550 6,2
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www.tangra.bgWe reserve the right to introduce alternations both in design and technical data without prior notice, due to continued product development.
Heat recovery units EVB-L
05 01.08
STANDARD CONFIGURATIONS
Horizontal installation
Vertical installation
Units are produced in configuration A and C. Modification from A to B or from C to D has to be orderedto the factory and also is possible at the building site.
ACCESSOARIES
External high efficiency filter F7, Pmax =80Pa;
Sound attenuators;
External electric heater;
Roof for outdoor installation;
Flexible duct connectors;
3-way valve for water coil;
Freeze protection;
Pressure switch;.
3-speed switch;
Hanging supports;
Basic steps;
Frame for outdoor installation.
ORDER DESIGNATION
EVB AL 30 3V HBS
Heating coil and by-pass
3-speed fan
Typesize
Heat recovery unit
A B
C D
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www.tangra.bgWe reserve the right to introduce alternations both in design and technical data without prior notice, due to continued product development.
HEAT RECOVERY UNITS
MIDDLE RANGE LOW PRESURE
VB AL- M
Units for secondary use of energy of the exhaust air in ventilation and air-conditioning systems.Operation temperatures from -20
oC up to 50
oC.
Designed to work with clean air in nonaggressive and non-sparkling environment.
CONSTRUCTION
Supporting construction, made by anodized aluminum profiles.
Thermo and sound insulated panels, powder coated RAL7035;
o
Sandwich panels 25 mm with XPS insulation class M1 or fiberglass class M0; Cross flow aluminum plate heat exchanger with efficiency up to 55%;
Double inlet direct drive centrifugal fans 380V, 50Hz;
Air filters class G4 EN 779:2002;
Rectangular duct connector;
Drain tray with connection;
Service doors from the bottom and from the side;
By-pass with multiple leaf damper by request;
Heating/ cooling coil by request;
Support frame or basic steps by request;
Roof panels for outdoor installation by request.
The construction allows horizontal () or vertical (V) installation.
05 02.01
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www.tangra.bgWe reserve the right to introduce alternations both in design and technical data without prior notice, due to continued product development.
05 02.02
Heat recovery units EVB-L
INSTALLATION
OVERALL AND JOINED DIMENTIONS VB AL M
Horizontal installation - H
Vertical installation - V
Type-size
FanRecuperative
exchanger
Dimensions, mm
H L b h c d
VB-AL- 40 CBM CBM 320/320 RECAL-1200/9-070 700 2550 400 340 600 500
VB-AL- 60 CBM CBM 380/380 RECAL-1200/9-080 800 2650 475 400 700 600
VB-AL- 80 CBM CBM 380/380 RECAL-1200/9-110 1000 2650 475 400 700 700
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www.tangra.bgWe reserve the right to introduce alternations both in design and technical data without prior notice, due to continued product development.
05 02.03
Heat recovery units EVB-L
OVERALL AND JOINED DIMENTIONS VB AL M HBS (HEAT+BY PASS HBS)
Horizontal installation - H
Vertical installation - V
Type-size
FanRecuperative
exchanger
Dimensions, mm
H L b h c d
VBAL- 40 CBM HBS CBM 320/320 RECAL-1200/9-070 1000 3000 400 340 600 500
VBAL- 60 CBM HBS CBM 380/380 RECAL-1200/9-080 1100 3100 475 400 700 600
VBAL- 80 CBM HBS CBM 380/380 RECAL-1200/9-110 1300 3100 475 400 700 700
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www.tangra.bgWe reserve the right to introduce alternations both in design and technical data without prior notice, due to continued product development.
05 02.04
Heat recovery units EVB-L
AERODYNAMIC CHARACTERISTICS
0
50
100
150
200
250
300
350
2500 3000 3500 4000 4500 5000 5500 6000
Externalpressure
Pa
Airvolumem3/h
EVBAL40
E=55%
E=54%
E=53%
E=52%
E=55%
E=54%
E=53%
E=52%
E=56%
0
50
100
150
200
250
300
350
400
450
3500 4000 4500 5000 5500 6000 6500 7000 7500 8000 8500 9000
Externalpressure
Pa
Ai r vo lume m3/h
EVB - Al - 60
----- external External pressure ; Pa- - - external External pressure (with water heating coil 800/800 2R 80/60
0C)
Type size FanNominal power
WRated current
A
BV AL- 40 CBM BM-320/320 21100 7,2
Type size FanNominal power
WRated current
A
BV AL- 60 CBM BM-380/380 22200 13,8
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www.tangra.bgWe reserve the right to introduce alternations both in design and technical data without prior notice, due to continued product development.
05 02.05
Heat recovery units EVB-L
E=54%E=55%
E=53%
E=52%
E=51%
0
50
100
150
200
250
300
350
400
5000 5500 6000 6500 7000 7500 8000 8500 9000 9500 10000 10500 11000
Externalpressure
Pa
Air vol ume m 3/h
EVB -Al - 80
---- external External pressure ; Pa- - - external External pressure (with water heating coil 800/800 2R 80/60
0C)
ORDER DESIGNATION
Heat recovery unit EVB AL - 40 - CBM ST/HBS H/V
EVB AL - 40 - CBM HBS - H
Horizontal installation
HEAT+BY PASS HBS
ypesize
Heat recovery unit AL
Type size FanNominal power
W
Rated currentA
BV AL- 80 CBM BM-380/380 22200 13,8
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05 03.01
HEAT RECOVERY UNITS
MIDDLE RANGE HIGH PRESSURE
VB AL- P
Units for secondary use of energy of the exhaust air in ventilation and air-conditioning systems.Operation temperatures from -20
oC up to 50
oC.
Designed to work with clean air in nonaggressive and non-sparkling environment.
CONSTRUCTION
Supporting construction, made by anodized aluminum profiles.
Thermo and sound insulated panels, powder coated RAL7035;
o Sandwich panels 25 mm with XPS insulation class M1 or fiberglass class M0;
Cross flow aluminum plate heat exchanger with efficiency up to 55%;
Double inlet belt driven centrifugal fans 380V, 50Hz;
Air filters class G4 EN 779:2002;
Rectangular duct connector;
Drain tray with connection;
Service doors from the side;
By-pass with multiple leaf damper;
External box with heating/ cooling coil by request;
Support frame or basic steps by request;
Roof panels for outdoor installation by request.
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05 03.02
Heat recovery units EVB-L
INSTALLATION
OVERALL AND JOINED DIMENSIONS VB AL P
Standard Version for vertical mounting
Type-size
FanRecuperative
exchangerDimensions, mm
B H L b h c d
VB AL- 41 CBP CBP 10/10 RECAL-600/5-040 1150 1350 1900 335 290 600 400
VB AL- 61 CBP CBP 12/12 RECAL-1200/9-060 850 2000 2500 400 340 500 600
VB AL- 81 CBP CBP 15/15 RECAL-1200/9-080 1050 2000 3000 470 400 600 600
Type-size
FanHeating/ cooling
coil
Dimensions, mm
B H H1 L L1,m L1 b h c d
VB AL- 41 CBP CBP 10/10 800/500 2R 1150 1350 1600 1900 1300 1500 335 290 600 400
VB AL- 61 CBP CBP 12/12 800/800 2R/ 4R 1050 2000 2400 2500 1400 1600 400 340 500 600
VB AL- 81 CBP CBP 15/15 1000/800 2R/ 4R 1250 2000 2700 3000 1600 1800 470 400 600 600
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05 03.03
Heat recovery units EVB-L
AERODYNAMIC CHARACTERISTICS free pressure
1. EVB AL- 41 CBP
Note: the curve is valid for EVB-CBP with incor porated water heating coi l COT 800/500 2R
2. EVB AL- 61 CBP
Note: the curve is valid for EVB-CBP with incor porated water heating coi l COT 800/800 2R
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05 03.04
Heat recovery units EVB-L
2. EVB AL- 81 CBP
Note: the curve is valid for EVB-CBP with incor porated water heating coi l COT 1000/800 2R
ORDER DESIGNATION
Heat recovery unit EVB AL - 41 - CBP
EVB AL - 41/1600 - CBP
ype size/ Rpm
Heat recovery unit AL
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www.tangra.bgWe reserve the right to introduce alternations both in design and technical data without prior notice, due to continued product development.
05 04.01
HEAT RECOVERY UNITS
HIGH EFFICIENCY RANGE
VB TOP/ PLUS
Units for secondary use of energy of the exhaust air in ventilation and air-conditioning systems.Operation temperatures from -20
oC up to 50
oC.
Designed to work with clean in nonaggressive and non-sparkling environment.
CONSTRUCTION
Supporting construction, made by anodized aluminum profiles.
Thermo and sound insulated panels, powder coated RAL7035;
o Internal insulation Firex 10 mm, fire resistance class: 0-BS 476 Part 6; class 1 BS 476 Part7;
o Sandwich panels 25 mm with XPS insulation class M1 or fiberglass class M0;
Counter flow aluminum plate heat exchanger with efficiency up to 70%;
Double inlet direct drive centrifugal fans 230V, 50Hz, IP 20 (higher protection by request);
Air filters class G4 EN 779:2002;
Rectangular or round duct connector;
Drain tray with connection;
Fixed configuration:
o type TOP for vertical installation with connections on the top side only;
o type PLUS for horizontal installation. Panels with fans and inlet panels could be replaced on the
front or on the side
Service doors :
o type TOP on the front side;
o type PLUS on the bottom or on the side;
By-pass with multiple leaf damper by request;
Heating/ cooling coil by request;
Hanging support or basic steps by request;
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www.tangra.bgWe reserve the right to introduce alternations both in design and technical data without prior notice, due to continued product development.
Heat recovery units ROT
05 05.02
OVERALL AND JOINED DIMENSIONS EVB P - (STANDARD VERSION)
OVERALL AND JOINED DIMENSIONS EVB P - HBC (BY-PASS AND WATER COIL)
TypesizeMax.
volumem
3/h
Dimensions, mm
L D K N
VB - 20-TOP 2500 600 1500 2100 315 50 72
VB - 30-TOP 3000 700 1500 2100 355 50 172
VB - 35-TOP 3500 800 1500 2100 355 50 222
Typesize
Max.volume,
m3/h
Dimensions, mm Water coilHeatingcapacity
L D K N B/H kW
VB -20-TOP-HBC 2500 680 1500 2100 315 50 162 500/300-2R 15
VB -30-TOP-HBC 3000 880 1500 2100 355 50 262 700/400-2R 22,5
VB -35-TOP-HBC 3500 980 1500 2100 355 50 312 700/400-2R 24,5
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www.tangra.bgWe reserve the right to introduce alternations both in design and technical data without prior notice, due to continued product development.
Heat recovery units TOP/ PLUS
05 04.03
AERODYNAMIC CHARACTERISTICS external stat ic pressure
Curves, marked with 13 are corresponding to the three speeds of the fans (3V);
For single speed fans use curve 1;
Dotted line is valid for unit with by-pass and water coil.
0
50
100
150
200
250
300
350
400
0 250 500 750 1000 1250 1500 1750 2000 2250 2500
H,
Pa
V,m3/h
EVB20 TOP
1
23
E=69%
E=67%
E=65%
+500/3002R1
0
50
100
150
200
250
300
350
400
450
500
0 500 1000 1500 2000 2500 3000
H,
Pa
V,m3/h
EVBAl30TOP
12
3
E=69%
E=67%
E=65%
1 +700/4002R
Typesize FanMotor power
WRated current
A
BV 20 - P BM/4-240/240 2370 4,2
BV 20 - TOP/3V BM/4-240/240 3V 2370 3,8
Typesize FanMotor power
WRated current
A
BV-30-TOP BM/4-270/200 2370 4,0BV-30-TOP/3V BM/4-270/200 3V 2370 3,0
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www.tangra.bgWe reserve the right to introduce alternations both in design and technical data without prior notice, due to continued product development.
Heat recovery units TOP/ PLUS
05 04.04
0
50
100
150
200
250
300
350
400
450
500
0 500 1000 1500 2000 2500 3000 3500
H,
Pa
V,m3/h
EVB35TOP
E=65%
E=67%
E=72%
Note:The Efficiency is calculated with the following parameters: amb. = -10/ 90%
room. = 22/ 40%
NOISE LEVEL INPUT/ OUTPUT OF VB [ dB(A)]
Typesize Hz 63 125 250 500 1000 2000 4000 8000
EVB 20-Pinput 40 52 58 53 56 57 56 50
output 43 54 57 56 70 64 63 55
EVB - 30-Pinput 43 57 60 55 57 69 65 56
output 50 61 67 69 75 73 70 62
EVB- 35-Pinput 44 58 61 56 58 59 60 54
output 50 61 67 68 74 72 73 65
ORDER DESIGNATION
Heat recovery unit EVB 20 TOP- S/CB / 3V
EVB - 20 -TOP- HBC 3V
3-speed fan
By-pass and water coil
Model
Typesize
Heat recovery unit
Typesize FanMotor power
WRated current
A
BV- 35-TOP BM/4-270/270 2550 6,2
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www.tangra.bgWe reserve the right to introduce alternations both in design and technical data without prior notice, due to continued product development.
Heat recovery units TOP/ PLUS
05 04.05
OVERALL AND JOINED DIMENSIONS EVB PLUS - (STANDARD VERSION)
OVERALL AND JOINED DIMENSIONS EVB PLUS - HBC (BY-PASS AND WATER COIL)
TypesizeMax.
volume,m
3/h
Dimensions, mm
max L M E F
VB - 20-PLUS 2500 1200 600 640 2400 315 90 140,5 70
VB - 30-PLUS 3000 1300 700 740 2500 355 115 182,5 80
VB 35-PLUS 3500 1300 800 840 2500 355 115 147,5 80
Typesize
Max.volume,
m3/h
Dimensions, mm COTHeating
capacity.
max L M E F B/H kW
VB - 20-PLUS-HBC 2500 1200 780 640 2700 315 90 140,5 70 500/500-2R 16,7VB - 30-PLUS-HBC 3000 1300 880 740 2800 355 115 182,5 80 600/600-2R 24,1
VB 35-PLUS-HBC 3500 1300 980 840 2800 355 115 147,5 80 600/600-2R 26,8
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www.tangra.bgWe reserve the right to introduce alternations both in design and technical data without prior notice, due to continued product development.
Heat recovery units TOP/ PLUS
05 04.06
AERODYNAMIC CHARACTERISTICS external stat ic pressure
Curves, marked with 13 are corresponding to the three speeds of the fans (3V);
For single speed fans use curve 1;
Dotted line is valid for unit with by-pass and water coil.
0
50
100
150
200
250
300
350
400
0 250 500 750 1000 1250 1500 1750 2000 2250 2500
H,
Pa
V,m3/h
EVB20 PLUS
1
23
E=69%
E=67%
E=65%
+500/5002R1
0
50
100
150
200
250
300
350
400
450
500
0 500 1000 1500 2000 2500 3000
H
,Pa
V,m3/h
EVBAl30PLUS
12
3
E=69%
E=67%
E=65%
1 +600/6002R
Typesize FanMotor power
WRated current
A
BV 20 - PLUS BM/4-240/2402370 4,2
BV 20 - PLUS/3V BM/4-240/240 3V 2370 3,8
Typesize FanMotor power
WRated current
A
BV-30-PLUS BM/4-270/200 2370 4,0
BV-30-PLUS/3V BM/4-270/200 3V 2370 3,0
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Heat recovery units TOP/ PLUS
05 04.07
0
50
100
150
200
250
300
350
400
450
500
0 500 1000 1500 2000 2500 3000 3500
H,
Pa
V,m3/h
EVB35PLUS
E=65%
E=67%
E=72%
1
1 +600/6002R
Note:The Efficiency is calculated with the following parameters: amb. = -10/ 90%
room. = 22
/ 40%
NOISE LEVEL INPUT/ OUTPUT OF VB [ dB(A)]
Typesize Hz 63 125 250 500 1000 2000 4000 8000
EVB 20-Pinput 40 52 58 53 56 57 56 50
output 43 54 57 56 70 64 63 55
EVB - 30-Pinput 43 57 60 55 57 69 65 56
output 50 61 67 69 75 73 70 62
EVB- 35-Pinput 44 58 61 56 58 59 60 54
output 50 61 67 68 74 72 73 65
ORDER DESIGNATION
Heat recovery unit EVB 20 TOP- S/CB / 3V
EVB - 20 - PLUS - HBC / 3V
3-speed fan
Water coil and by-pass
Model
Typesize
Heat recovery unit
Typesize FanMotor power
WRated cu rrent
A
BV- 35-PLUS BM/4-270/270 2550 6,2
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30/35
www.tangra.bgWe reserve the right to introduce alternations both in design and technical data without prior notice, due to continued product development .
05 05.01
HEAT RECOVERY UNITS
WITH ROTARY REGENERATIVE HEAT EXCHANGER
EVB ROT
Units for secondary use of energy of the exhaust air in ventilation and air-conditioning systems.Operation temperatures from -20
oC up to 50
oC.
Designed to work with clean air in nonaggressive and non-sparkling environment.
CONSTRUCTION
Supporting construction, made by anodized aluminum profiles.
Thermo and sound insulated panels, powder coated RAL7035;
o Sandwich panels 25 mm with XPS insulation class M1 or fiberglass class M0; Rotary regenerative heat exchanger with efficiency up to 75%;
Double inlet belt driven centrifugal fans 380V, 50Hz;
Air filters class G4 EN 779:2002;
Rectangular duct connector;
Drain tray with connection;
Service doors from the side;
By-pass with multiple leaf damper by request;
Heating/ cooling coil by request;
Supporting frame by request;
Roof panels for outdoor installation by request.
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31/35
www.tangra.bgWe reserve the right to introduce alternations both in design and technical data without prior notice, due to continued product
development.
Heat recovery unit s ROT
05 05.02
OVERALL AND JOINED DIMENSIONS
TypesizeV,
m3/h
B,mm
L,
mm
L,
mm
L,
mm
L,
mm
L,
mm
H,
mm
H,
mm
H,
mm
H,
mm
h,mm
b,mm
42
3000120
0650
1700
- -170
0700 700
1400
1500
300 500
4000 400 500
5000 400 600
62
5000130
0 800
180
0 - -
180
0 800 800
160
0
170
0
400 700
6000 400 8007000 500 800
82
7000155
0800
1650
550 850135
01000
1000
2000
2100
500 800
8000 500 900
9000 500 1000
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32/35
www.tangra.bgWe reserve the right to introduce alternations both in design and technical data without prior notice, due to continued product
development.
Heat recovery unit s ROT
05 05.03
TECHNICAL CHARACTERISTICS
The data given in tables are valid for the following parameters of the air:
Winter mode: inlet= -12, relative air humidity 80% (fresh air)
outlet= 20, relative air humidity 30% (exhaust air)
Water temperature 80/60C
Summer mode: inlet= 33, relative air humidity - 35% (fresh air)
outlet= 25, relative air humidity - 40% (exhaust air)
Water temperature 7/12C
TypesizeV
[m/h]
E
[%]
Working
mode
outletafter
ROT[C]
Heating/
cooling watercoil
Q ,
[kW]
outlet,
[]
Pext,
[Pa]Fan Rpm
Motor
power[kW]
42-30 3000 72,3winter 11.1 1000/500-2R 32 40
300 CBP 10/10 1420 1,1summer 27.1 1000/500-4R 15 15
42-40 4000 67,1winter 9.5 1000/500-2R 38 36
300 CBP 10/10 1480 1,5summer 27.6 1000/500-4R 17,5 16,1
42-50 5000 62,8winter 8.1 1000/500-2R 43 33
300 CBP 10/10 1620 2,2
summer 27.9 1000/500-4R 20 17
62-50 5000 75,6winter 11 1000/600-2R 41 38
330 CBP 15/11 1030 2.2summer 27.2 1000/600-4R 18 15,5
62-60 6000 68,6winter 9.9 1000/600-2R 52 33
380 CBP15/11 1130 3,0summer 27.4 1000/600-4R 24 17
62-70 7000 63,1winter 9 1000/600-2R 61 30
420 CBP 15/11 1200 4,0summer 27.7 1000/600-4R 28 18
82-70 7000 75,3winter 11.3 1200/600-2R 57 36
400 BDB 400 1630 3summer 27.1 1200/600-4R 27 16,0
82-80 800070,4
winter 10.5 1200/600-2R 67 33430 BDB 400 1780 4
summer 27.3 1200/600-4R 32 17
82-90 9000 66,3winter 9.8 1200/600-2R 76 31
540 BDB 400 1980 5.5summer 27.5 1200/600-4R 37 18
Note: In case of parameters, different from the mentioned above, please, contact the producer.
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www.tangra.bgWe reserve the right to introduce alternations both in design and technical data without prior notice, due to continued product
development.
Heat recovery uni ts ROT
05 05.04
AERODYNAMIC CHARACTERISTICS PRESSURE DROP
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34/35
www.tangra.bgWe reserve the right to introduce alternations both in design and technical data without prior notice, due to continued product
development.
Heat recovery uni ts ROT
05 05.05
SUPPORTING FRAME
This is the base over which are assembled the separate sections. Supporting frame is made ofgalvanized profiles with openings for lift up and transportation, drainage and etc.
FRAME FOR OUTDOOR INSTALLATION
Designed for installation of the units over flat and low-pitched roofs without breach of the hydroinsulation.The frame consists of profiles over which are assembled the separate sections of the heatrecovery unit. Profiles are clamped together with special clutches. This makes the frame easy
joinable and convenient for leveling and transportation.
OPTIONS FOR CONTROL AND AUTOMATION
Freeze protection;
Torn belt differential presostat;
Dirty filter differential presostat;
Electric motor (actuator) for multiple leaf dampers;
3-way valves for heating/ cooling water coils;
Air temperature remote tracking;
Power board for control and automation;
Rotary heat exchanger automatic control system.
ORDER DESIGNATION
EVB ROT 42 40Air volume- (4000 /h)
Typesize / series /
Rotary regenerative heat exchanger
Heat recovery unit
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7/24/2019 Heat Recovery Units Range
35/35
Ventilation Air-conditioning Heating
Head Office
174 "Europe" blvd.1331, SofiaBulgaria
Phones: (+359 2) 9250599;9250610Fax: (+359 2) 9250557
www.tangra.bg
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