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2
Air to Air Heat exchanger Type Engineering Data Book
1. Specifications
* Air volume can be changed over to high (extra high) mode or low mode. at both heat exchange and normal ventilation modes* Sound pressure lebel is measured 1.5 m below the center of the unit.* Sound pressure lebel is the value which was measured at the acoustic room.* Actually, sound pressure lebels become higher than this value depending on the oeprating conditions, reflected sound and peripheral noise.
*1) When the temperature of the outdoor air is below -10°C, the unit runs is the cold model (the ventilator for air supply runs intermittently).The unit cannot run when the temperature of the outdoor air is below -15°C.The ventilator for air supply stops running and the ventilator for air exhaust also stops depending on the settings.
Item
Model
Fan speed
VN-M150HE VN-M250HE VN-M350HE VN-M500HE VN-M650HE VN-M800HE VN-M1000HE
Power supply (V) Single phase 220-240V~50Hz / 220V~60Hz
Power consumption (W)
(Extra high) 68-78/76 123-138/131 165-182/209 214-238/260 262-290/307 360-383/446 532-569/622
High 59-67/65 99-111/105 135-145/162 176-192/206 240-258/283 339-353/408 494-538/589
Low 42-47/45 52-59/54 82-88/94 128-142/144 178-191/206 286-300/333 353-370/411
Air volume (m3/h)
(Extra high) 150/150 250/250 350/350 500/500 650/650 800/800 1000/1000
High 150/150 250/250 350/350 500/500 650/650 800/800 1000/1000
Low 110/110 155/155 210/210 390/390 520/520 700/700 755/755
External static pressure (Pa)
(Extra high) 82-102/99 80-98/97 114-125/167 134-150/181 91-107/134 142-158/171 130-150/185
High 52-78/59 34-65/38 56-83/33 69-99/63 58-82/68 102-132/102 97-122/120
Low 47-64/46 28-40/22 65-94/39 62-92/44 61-96/52 76-112/58 84-127/55
Sound pressure level (dB(A))
(Extra high) 26-28/27.5 29.5-30/31.5 34-35/35.5 32.5-34/33.5 34-36/35.5 37-38.5/38 39.5-40.5/41.5
High 24-25.5/24.5 25-27/25 30-32/29.5 29.5-31/29 33-34/34 35.5-37/35 38.5-40/39
Low 20-22/20 21-22/21 27-29/23.5 26-29/24.5 31-32.5/29.5 33.5-35/32.5 34-35.5/33.5
Temperature exchange efficiency (%)
(Extra high) 81.5/81.5 78/78 74.5/74.5 76.5/76.5 75/75 76.5/76.5 73.5/73.5
High 81.5/81.5 78/78 74.5/74.5 76.5/76.5 75/75 76.5/76.5 73.5/73.5
Low 83/83 81.5/81.5 79.5/79.5 78/78 76.5/76.5 77.5/77.5 77/77
Enthalpy exchange efficiency (%)
For heating
(Extra high) 74.5/74.5 70/70 65/65 72/72 69.5/69.5 71/71 68.5/68.5
High 74.5/74.5 70/70 65/65 72/72 69.5/69.5 71/71 68.5/68.5
Low 76/76 74/74 71.5/71.5 73.5/73.5 71.5/71.5 71.5/71.5 71.5/71.5
For cooling
(Extra high) 69.5/69.5 65/65 60.5/60.5 64.5/64.5 61.5/61.5 64/64 60.5/60.5
High 69.5/69.5 65/65 60.5/60.5 64.5/64.5 61.5/61.5 64/64 60.5/60.5
Low 71/71 69/69 67/67 66.5/66.5 64/64 65.5/65.5 64.5/64.5
Dimensions (Length x Width x Height) (mm) 900 x 900 x 290 1140 x 1140 x 350 1189 x 1189 x 400
Weight (kg) 36 36 38 53 53 70 70
Dact diameter (mm) 100 150 200 250
Filtration efficiency grade (%) 82
Operating range
Around unit -10°C~40°C 80% RH or less
Outdoor Air (OA) -15°C(*1)~43°C 80% RH or less
Return Air (RA) 5°C~40°C 80% RH or less
3
Air to Air Heat exchanger Type Engineering Data Book
2. DimensionVN-M150HE
Attention1. Duct size (Nominal Diameter): ø1002. The above dimensions do not include the thickness (5 mm) of the
insulation material on the unit body.
Attention1. The two outdoor ducts (the Outdoor air Duct and the Exhaust air Duct)
must be insulated to prevent condensation (Material: Glass wool, Thickness: 25 mm)
2. It is recommended that you use an electric damper together with the Air to Air Heat Exchanger, as wind may enter the room while the unit is not in operation in windy places.
3. As shown in the Figure, suppose a high temp absorbing air condition A and a low temp absorbing air condition B are plotted on the air line figure, then a high temp air A is heat-exchanged by the unit and goes out of the saturation curve as shown by Point C. In this case, the unit will be dewed or frosted. To aboid this, you are required to heat a low temp air B up to B’ so as to get C’ below the saturation curve, before using the unit.
Reference Diagram
4
Air to Air Heat exchanger Type Engineering Data Book
VN-M250HE, VN-M350HE
Attention1. Duct size (Nominal Diameter): ø1502. The above dimensions do not include the thickness (5 mm) of the
insulation material on the unit body.
Attention1. The two outdoor ducts (the Outdoor air Duct and the Exhaust air Duct)
must be insulated to prevent condensation (Material: Glass wool, Thickness: 25 mm)
2. It is recommended that you use an electric damper together with the Air to Air Heat Exchanger, as wind may enter the room while the unit is not in operation in windy places.
3. As shown in the Figure, suppose a high temp absorbing air condition A and a low temp absorbing air condition B are plotted on the air line figure, then a high temp air A is heat-exchanged by the unit and goes out of the saturation curve as shown by Point C. In this case, the unit will be dewed or frosted. To aboid this, you are required to heat a low temp air B up to B’ so as to get C’ below the saturation curve, before using the unit.
Reference Diagram
5
Air to Air Heat exchanger Type Engineering Data Book
VN-M500HE, VN-M650HE
Attention1. Duct size (Nominal Diameter): ø2002. The above dimensions do not include the thickness (5 mm) of the
insulation material on the unit body.
Attention1. The two outdoor ducts (the Outdoor air Duct and the Exhaust air Duct)
must be insulated to prevent condensation (Material: Glass wool, Thickness: 25 mm)
2. It is recommended that you use an electric damper together with the Air to Air Heat Exchanger, as wind may enter the room while the unit is not in operation in windy places.
3. As shown in the Figure, suppose a high temp absorbing air condition A and a low temp absorbing air condition B are plotted on the air line figure, then a high temp air A is heat-exchanged by the unit and goes out of the saturation curve as shown by Point C. In this case, the unit will be dewed or frosted. To aboid this, you are required to heat a low temp air B up to B’ so as to get C’ below the saturation curve, before using the unit.
Reference Diagram
6
Air to Air Heat exchanger Type Engineering Data Book
VN-M800HE, VN-M1000HE
Attention1. Duct size (Nominal Diameter): ø2502. The above dimensions do not include the thickness (5 mm) of the
insulation material on the unit body.
Attention1. The two outdoor ducts (the Outdoor air Duct and the Exhaust air Duct)
must be insulated to prevent condensation (Material: Glass wool, Thickness: 25 mm)
2. It is recommended that you use an electric damper together with the Air to Air Heat Exchanger, as wind may enter the room while the unit is not in operation in windy places.
3. As shown in the Figure, suppose a high temp absorbing air condition A and a low temp absorbing air condition B are plotted on the air line figure, then a high temp air A is heat-exchanged by the unit and goes out of the saturation curve as shown by Point C. In this case, the unit will be dewed or frosted. To aboid this, you are required to heat a low temp air B up to B’ so as to get C’ below the saturation curve, before using the unit.
Reference Diagram
7
Air to Air Heat exchanger Type Engineering Data Book
3. Wiring DiagramVN-M150HE, VN-M250HE, VN-M350HE, VN-M500HE, VN-M650HE, VN-M800HE, VN-M1000HE
Code Part nameCN*** ConnectorF01 FuseFM1 Air supplying motorFM2 Air exhausting motorDAM Damper motorTRA TRA sensor
Code Part nameTOA TOA sensorRY701, RY702 Relay for air supplying motorRY704, RT705 Relay for air exhausting motorTB1 Terminal block (power supply)TB2 Terminal block (communication)TB3 Terminal block (external output)
Code Part nameSW301, SW701SW702, SW703 DIP switch
43F11, 43F12 Relay for air supplying motor43F21, 43F22 Relay for air exhausting motor
1. The dotted line represents a wire procured locally, and the dashed line represents an option sold separately.2. represents a terminal block, represents a connection terminal, and represents a connector on the printed circuit board.3. represents a protective earth.4. represents a printed circuit board.5. Using a no voltage a-contact input of the external input (Sold separately), the following operations are available:
Between 1 and 2: Selecting the remote controller operation (Invalid/Valid)Between 1 and 3: Adjusting the ventilation fan speed (Low/High)Between 1 and 4: Selecting the ventilation mode (Bypass mode/Heat exchange mode)Between 1 and 5: Operation (ON/OFF)Use a microcurrent contact (DC12V, 1mA). In addition, ON/OFF operation is possible when using a voltage of DC12V or 24V.
6. Blue wire (High) is connected as factory default. To switch to “Extra High”, connect black wire’s connector instead of blue.7. When the temperature of the outdoor air is below -10°C, the unit runs in the cold mode (the ventilator for air supply runs intermittently). The unit cannot run when the temperature of the
outdoor air is below -15°C. The ventilator for air supply stops running and the ventilator for air exhaust also stops depending on the settings.8. Even if “Bypass mode” is selected manually, the unit switches to “Heat exchange mode” automatically to prevent condensation when the temperature of the outdoor air is below 15°C.
However, “Bypass mode” is still displayed.
8
Air to Air Heat exchanger Type Engineering Data Book
4. Fan Characteristics(220V~, 50Hz) P-Q Curve * When friction coefficient of pipe (duct) :
VN-M150HE VN-M250HE VN-M350HE
Ext
erna
l sta
tic p
ress
ure
(Pa)
450
400
350
300
250
200
150
100
50
0
Ext
erna
l sta
tic p
ress
ure
(Pa)
450
400
350
300
250
200
150
100
50
0
Exte
rnal
sta
tic p
ress
ure
(Pa)
450
400
350
300
250
200
150
100
50
0
500
Ext
erna
l sta
tic p
ress
ure
(Pa)
400
350
300
250
200
150
100
50
100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300
100 200 300 400 500 600 700 800 900100 200 300 400 500 600 700 800 900
VN-M500HE VN-M650HE
VN-M800HE VN-M1000HE
Ext
erna
l sta
tic p
ress
ure
(Pa)
400
350
300
250
200
150
100
50
0100 200 300 400 500 600
300
250
200
150
100
50
050 100 150 200 250 300
Ext
erna
l sta
tic p
ress
ure
(Pa)
350
300
250
200
150
100
50
050 100 150 200 250 300 350 400
90
80
70
60
50
90
80
70
60
50
Air Volume (m /h)3
Air Volume (m /h)3
Air Volume (m /h)3
Air Volume (m /h)3Air Volume (m /h)3
Air Volume (m /h)3 Air Volume (m /h)3
90
80
70
60
50
90
80
70
60
50
Duc
t res
ista
nce
curv
eE
xcha
nge
Effi
cien
cy (%
)
Duc
t res
ista
nce
curv
eE
xcha
nge
Effi
cien
cy (%
)
Duc
t res
ista
nce
curv
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xcha
nge
Effi
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)
Duc
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ista
nce
curv
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xcha
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Effi
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cy (%
)
Duc
t res
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nce
curv
eE
xcha
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Effi
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)
90
80
70
60
50
Duc
t res
ista
nce
curv
eE
xcha
nge
Effi
cien
cy (%
)
90
80
70
60
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Duc
t res
ista
nce
curv
eE
xcha
nge
Effi
cien
cy (%
)
Ext
erna
l sta
tic p
ress
ure
(Pa)
0
90
80
70
60
50
Temperature
Enthalpy (in heating)Enthalpy (in cooling)
Extra High
Low
High
TemperatureEnthalpy (in heating)
Enthalpy (in cooling)
Extra High
Low High
20 m
30 m
10 m
100
m80
m
60 m
40 m
20 m
TemperatureEnthalpy (in heating)
Enthalpy (in cooling)
Extra High
Low High
100 m
80 m
60 m
40 m
20 m
Equiva
lent
pipe l
ength
TemperatureEnthalpy (in heating)
Enthalpy (in cooling)
Extra High
Low
High
100
m80
m
60 m
40 m
20 m
TemperatureEnthalpy (in heating)Enthalpy (in cooling)
Extra HighLow High
100 m
80 m
60 m
40 m
20 m
Equiva
lent
pipe l
ength
Equiva
lent
pipe l
ength
Equiva
lent
pipe l
ength
Temperature
Enthalpy (in heating)Enthalpy (in cooling)
Extra High
Low
High
100 m
80 m 60 m
40 m
20 m
Equiva
lent
pipe l
ength
Temperature
Enthalpy (in heating)Enthalpy (in cooling)
Extra High
Low
High
100
m80
m
60 m
40 m
20 m
Equiva
lent
pipe l
ength
9
Air to Air Heat exchanger Type Engineering Data Book
(240V~, 50Hz) P-Q Curve * When friction coefficient of pipe (duct) :
VN-M150HE VN-M250HE VN-M350HE
Ext
erna
l sta
tic p
ress
ure
(Pa)
450
400
350
300
250
200
150
100
50
0
Ext
erna
l sta
tic p
ress
ure
(Pa)
450
400
350
300
250
200
150
100
50
0
Exte
rnal
sta
tic p
ress
ure
(Pa)
450
400
350
300
250
200
150
100
50
0
500
Ext
erna
l sta
tic p
ress
ure
(Pa)
400
350
300
250
200
150
100
50
0
100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300
100 200 300 400 500 600 700 800 900100 200 300 400 500 600 700 800 900
VN-M500HE VN-M650HE
VN-M800HE VN-M1000HE
Ext
erna
l sta
tic p
ress
ure
(Pa)
400
350
300
250
200
150
100
50
0100 200 300 400 500 600
Ext
erna
l sta
tic p
ress
ure
(Pa)
300
250
200
150
100
50
050 100 150 200 250 300
Ext
erna
l sta
tic p
ress
ure
(Pa)
350
300
250
200
150
100
50
050 100 150 200 250 300 350 400
90
80
70
60
50
90
80
70
60
50
90
80
70
60
50
Air Volume (m /h)3
Air Volume (m /h)3
Air Volume (m /h)3
Air Volume (m /h)3Air Volume (m /h)3
Air Volume (m /h)3 Air Volume (m /h)3
90
80
70
60
50
90
80
70
60
50
Duc
t res
ista
nce
curv
eE
xcha
nge
Effi
cien
cy (%
)
Duc
t res
ista
nce
curv
eE
xcha
nge
Effi
cien
cy (%
)
Duc
t res
ista
nce
curv
eE
xcha
nge
Effi
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cy (%
)
Duc
t res
ista
nce
curv
eE
xcha
nge
Effi
cien
cy (%
)
Duc
t res
ista
nce
curv
eE
xcha
nge
Effi
cien
cy (%
)
90
80
70
60
50
Duc
t res
ista
nce
curv
eE
xcha
nge
Effi
cien
cy (%
)
90
80
70
60
50
Duc
t res
ista
nce
curv
eE
xcha
nge
Effi
cien
cy (%
)
Temperature
Enthalpy (in heating)Enthalpy (in cooling)
Extra High
Low
High
TemperatureEnthalpy (in heating)
Enthalpy (in cooling)
Extra High
Low High
20 m
30 m
10 m
100
m80
m
60 m
40 m
20 m
TemperatureEnthalpy (in heating)
Enthalpy (in cooling)
Extra High
LowHigh
100 m
80 m
60 m
40 m
20 m
Equiva
lent
pipe l
ength
TemperatureEnthalpy (in heating)
Enthalpy (in cooling)
Extra High
Low
High
100 m
80 m
60 m
40 m
20 m
TemperatureEnthalpy (in heating)Enthalpy (in cooling)
Extra High
Low
High
100 m
80 m
60 m
40 m
20 m
Equiva
lent
pipe l
ength
Equiva
lent
pipe l
ength
Equiv
alent
pipe
lengt
h
Temperature
Enthalpy (in heating)Enthalpy (in cooling)
Extra High
Low
High
100 m
80 m
60 m
40 m
20 m
Equiva
lent
pipe l
ength
Temperature
Enthalpy (in heating)Enthalpy (in cooling)
Extra High
Low
High
100
m80
m60
m40
m
20 m
Equiv
alent
pipe
lengt
h
10
Air to Air Heat exchanger Type Engineering Data Book
(220V~, 60Hz) P-Q Curve * When friction coefficient of pipe (duct) :
VN-M150HE VN-M250HE VN-M350HE
Ext
erna
l sta
tic p
ress
ure
(Pa)
450
400
350
300
250
200
150
100
50
0
Ext
erna
l sta
tic p
ress
ure
(Pa)
450
400
350
300
250
200
150
100
50
0
Exte
rnal
sta
tic p
ress
ure
(Pa)
450
400
350
300
250
200
150
100
50
0
500
Ext
erna
l sta
tic p
ress
ure
(Pa)
400
350
300
250
200
150
100
50
100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300
100 200 300 400 500 600 700 800 900100 200 300 400 500 600 700 800 900
VN-M500HE VN-M650HE
VN-M800HE VN-M1000HE
Ext
erna
l sta
tic p
ress
ure
(Pa)
400
350
300
250
200
150
100
50
0100 200 300 400 500 600
300
250
200
150
100
50
050 100 150 200 250 300
Ext
erna
l sta
tic p
ress
ure
(Pa)
350
300
250
200
150
100
50
050 100 150 200 250 300 350 400
90
80
70
60
50
90
80
70
60
50
Air Volume (m /h)3
Air Volume (m /h)3
Air Volume (m /h)3
Air Volume (m /h)3Air Volume (m /h)3
Air Volume (m /h)3 Air Volume (m /h)3
90
80
70
60
50
90
80
70
60
50
Duc
t res
ista
nce
curv
eE
xcha
nge
Effi
cien
cy (%
)
Duc
t res
ista
nce
curv
eE
xcha
nge
Effi
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cy (%
)
Duc
t res
ista
nce
curv
eE
xcha
nge
Effi
cien
cy (%
)
Duc
t res
ista
nce
curv
eE
xcha
nge
Effi
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cy (%
)
Duc
t res
ista
nce
curv
eE
xcha
nge
Effi
cien
cy (%
)
90
80
70
60
50
Duc
t res
ista
nce
curv
eE
xcha
nge
Effi
cien
cy (%
)
90
80
70
60
50
Duc
t res
ista
nce
curv
eE
xcha
nge
Effi
cien
cy (%
)
0
90
80
70
60
50
Ext
erna
l sta
tic p
ress
ure
(Pa)
Temperature
Enthalpy (in heating)Enthalpy (in cooling)
Extra High
Low
High
TemperatureEnthalpy (in heating)
Enthalpy (in cooling)
Extra High
LowHigh
20 m
30 m
10 m
100
m80
m
60 m
40 m
20 m
TemperatureEnthalpy (in heating)
Enthalpy (in cooling)
Extra High
Low
High 100 m
80 m
60 m
40 m
20 m
Equiva
lent
pipe l
ength
TemperatureEnthalpy (in heating)
Enthalpy (in cooling)
Extra High
Low
High
100 m
80 m
60 m
40 m
20 m
TemperatureEnthalpy (in heating)Enthalpy (in cooling)
Extra High
Low
High
100 m
80 m
60 m
40 m
20 m
Equiva
lent
pipe l
ength
Equiva
lent
pipe l
ength
Equiv
alent
pipe
lengt
h
Temperature
Enthalpy (in heating)Enthalpy (in cooling)
Extra High
Low
High
100 m
80 m
60 m
40 m
20 m
Equiva
lent
pipe l
ength
Temperature
Enthalpy (in heating)Enthalpy (in cooling)
Extra High
LowHigh
100
m80
m60
m40
m
20 m
Equiv
alent
pipe
lengt
h
Air to Air Heat exchanger Type Databook
Mar, 2011 First Edition
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