Toshiba VN-M150HE User manual

Air to Air Heat Exchanger
SERVICE MANUAL
FILE No. A10-021
Concealed microcomputer control type
Model name:
VN-M150HE
VN-M250HE
VN-M350HE
VN-M500HE
VN-M650HE
VN-M800HE
VN-M1000HE

1
Contents
1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3 Model List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4 Connection diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5 Parts Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6 Control Outline. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7 Applied Control and Functions (Including Circuit Configuration) . . . . . . . . . . . . . 28
8 Air to Air Heat Exchanger Unit and Air-Conditioning System. . . . . . . . . . . . . . . . . 37
9 Failure Diagnosis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
10 Exchanging and Assembling the Main Components . . . . . . . . . . . . . . . . . . . . . . . . 51
11 Owner’s Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
12 Installation Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
13 How to replace the PC board for service on the Air to Air Heat Exchanger . . . . 139
14 Exploded Diagram/Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143

2
Original instruction
Please read carefully through these instructions that contain important information which complies with the
“Machinery” Directive (Directive 2006/42/EC), and ensure that you understand them.
Some of the details provided in these instructions differ from the service manual, and the instructions provided here
take precedence.
Generic Denomination: Air to Air Heat Exchanger
Definition of Qualified Installer or Qualified Service Person
The Air to Air Heat Exchanger must be installed, maintained, repaired and removed by a qualified installer or
qualified service person. When any of these jobs is to be done, ask a qualified installer or qualified service person
to do them for you.
A qualified installer or qualified service person is an agent who has the qualifications and knowledge described in
the table below.
Agent Qualifications and knowledge which the agent must have
Qualified installer
• The qualified installer is a person who installs, maintains, relocates and removes the Air to Air Heat
Exchanger made by Toshiba Carrier Corporation. He or she has been trained to install, maintain,
relocate and remove the Air to Air Heat Exchanger made by Toshiba Carrier Corporation or,
alternatively, he or she has been instructed in such operations by an individual or individuals who have
been trained and is thus thoroughly acquainted with the knowledge related to these operations.
• The qualified installer who is allowed to do the electrical work involved in installation, relocation and
removal has the qualifications pertaining to this electrical work as stipulated by the local laws and
regulations, and he or she is a person who has been trained in matters relating to electrical work on
the Air to Air Heat Exchanger made by Toshiba Carrier Corporation or, alternatively, he or she has
been instructed in such matters by an individual or individuals who have been trained and is thus
thoroughly acquainted with the knowledge related to this work.
• The qualified installer who is allowed to work at heights has been trained in matters relating to working
at heights with the Air to Air Heat Exchanger made by Toshiba Carrier Corporation or, alternatively,
he or she has been instructed in such matters by an individual or individuals who have been trained
and is thus thoroughly acquainted with the knowledge related to this work.
Qualified service
person
• The qualified service person is a person who installs, repairs, maintains, relocates and removes the
Air to Air Heat Exchanger made by Toshiba Carrier Corporation. He or she has been trained to install,
repair, maintain, relocate and remove the Air to Air Heat Exchanger made by Toshiba Carrier
Corporation or, alternatively, he or she has been instructed in such operations by an individual or
individuals who have been trained and is thus thoroughly acquainted with the knowledge related to
these operations.
• The qualified service person who is allowed to do the electrical work involved in installation, repair,
relocation and removal has the qualifications pertaining to this electrical work as stipulated by the local
laws and regulations, and he or she is a person who has been trained in matters relating to electrical
work on the Air to Air Heat Exchanger made by Toshiba Carrier Corporation or, alternatively, he or she
has been instructed in such matters by an individual or individuals who have been trained and is thus
thoroughly acquainted with the knowledge related to this work.
• The qualified service person who is allowed to work at heights has been trained in matters relating to
working at heights with the Air to Air Heat Exchanger made by Toshiba Carrier Corporation or,
alternatively, he or she has been instructed in such matters by an individual or individuals who have
been trained and is thus thoroughly acquainted with the knowledge related to this work.

3
Definition of Protective Gear
When the Air to Air Heat Exchanger is to be transported, installed, maintained, repaired or removed, wear
protective gloves and ‘safety’ work clothing.
In addition to such normal protective gear, wear the protective gear described below when undertaking the special
work detailed in the table below.
Failure to wear the proper protective gear is dangerous because you will be more susceptible to injury, burns,
electric shocks and other injuries.
The important contents concerned to the safety are described on the product itself and on this Service Manual.
Please read this Service Manual after understanding the described items thoroughly in the following contents
(Indications/Illustrated marks), and keep them.
[Explanation of indications]
* Property damage: Enlarged damage concerned to property, furniture, and domestic animal/pet
[Explanation of illustrated marks]
Work undertaken Protective gear worn
All types of work Protective gloves
‘Safety’ working clothing
Electrical-related work Gloves to provide protection for electricians and from heat
Work done at heights
(50 cm or more)
Helmets for use in industry
Transportation of heavy objects Shoes with additional protective toe cap
Indication Explanation
DANGER Indicates contents assumed that an imminent danger causing a death or serious injury of the repair
engineers and the third parties when an incorrect work has been executed.
WARNING Indicates possibilities assumed that a danger causing a death or serious injury of the repair
engineers, the third parties, and the users due to troubles of the product after work when an incorrect
work has been executed.
CAUTION Indicates contents assumed that an injury or property damage (*) may be caused on the repair
engineers, the third parties, and the users due to troubles of the product after work when an incorrect
work has been executed.
Mark Explanation
Indicates prohibited items (Forbidden items to do)
The sentences near an illustrated mark describe the concrete prohibited contents.
Indicates mandatory items (Compulsory items to do)
The sentences near an illustrated mark describe the concrete mandatory contents.
Indicates cautions (Including danger/warning)
The sentences or illustration near or in an illustrated mark describe the concrete cautious contents.

4
Warning Indications on the Air to Air Heat
Exchanger Unit
[Confirmation of warning label on the main unit]
Confirm that labels are indicated on the specified positions.
If removing the label during parts replace, stick it as the original.
Warning indication Description
WARNING
ELECTRICAL SHOCK HAZARD
Disconnect all remote electric power supplies before servicing.
WARNING
Moving parts.
Do not operate unit with inspection cover removed.
Stop the unit before the servicing.
CAUTION
High temperature parts.
You might get burned when removing this cover.
WARNING
ELECTRICAL SHOCK HAZARD
Disconnect all remote
electric power supplies
before servicing.
WARNING
Moving parts.
Do not operate unit with
inspection cover removed.
Stop the unit before the servicing.
CAUTION
High temperature parts.
You might get burned
when removing this cover.

5
Precautions for Safety
The manufacturer shall not assume any liability for the damage caused by not observing the description of this
manual.
DANGER
Turn off breaker.
Before carrying out the installation, maintenance, repair or removal work, be sure to set the circuit breaker for Air
to Air Heat Exchanger to the OFF position. Otherwise, electric shocks may result.
Before opening the electrical control cover or inspection cover of the Air to Air Heat Exchanger, set the circuit
breaker to the OFF position.
Failure to set the circuit breaker to the OFF position may result in electric shocks through contact with the interior
parts.
Only a qualified installer (*1) or qualified service person (*1) is allowed to remove the electrical control cover or
inspection cover of the Air to Air Heat Exchanger and do the work required.
When cleaning the filter or heat exchange element of the Air to Air Heat Exchanger, set the circuit breaker to OFF
without fail, and place a “Work in progress” sign near the circuit breaker before proceeding with the work.
When you have noticed that some kind of trouble (such as when an error display has appeared, there is a smell of
burning, abnormal sounds are heard, water is leaking) has occurred in the Air to Air Heat Exchanger, do not touch
the Air to Air Heat Exchanger yourself but set the circuit breaker to the OFF position, and contact a qualified service
person. Take steps to ensure that the power will not be turned on (by marking “out of service” near the circuit
breaker, for instance) until qualified service person arrives. Continuing to use the Air to Air Heat Exchanger in the
trouble status may cause mechanical problems to escalate or result in electric shocks or other failure.
Electric shock
hazard
When you access inside of the electrical control cover to repair electric parts, wait for about five minutes after
turning off the breaker. Do not start repairing immediately.Otherwise you may get electric shock by touching
terminals of high-voltage capacitors. Natural discharge of the capacitor takes about five minutes.
Prohibition
Place a “Work in progress” sign near the circuit breaker while the installation, maintenance, repair or removal work
is being carried out.
There is a danger of electric shocks if the circuit breaker is set to ON by mistake.
Before operating the Air to Air Heat Exchanger after having completed the work, check that the electrical control
cover and inspection cover are closed, and set the circuit breaker to the ON position. You may receive an electric
shock if the power is turned on without first conducting these checks.
Stay on
protection
If, in the course of carrying out repairs, it becomes absolutely necessary to check out the electrical parts with the
electrical control cover and inspection cover removed in order to find out exactly where the trouble lies, wear
insulated heat-resistant gloves, insulated boots and insulated work overalls, and take care to avoid touching any
live parts.
You may receive an electric shock if you fail to heed this warning. Only qualified service person (*1) is allowed to
do this kind of work.

6
WARNING
General
Before starting to repair the Air to Air Heat Exchanger, read carefully through the Service Manual, and repair the
Air to Air Heat Exchanger by following its instructions.
Only qualified service person (*1) is allowed to repair the Air to Air Heat Exchanger.
Repair of the Air to Air Heat Exchanger by unqualified person may give rise to a fire, electric shocks, injury, water
leaks and/or other problems.
Only a qualified installer (*1) or qualified service person (*1) is allowed to carry out the electrical work of the Air to
Air Heat Exchanger.
Under no circumstances must this work be done by an unqualified individual since failure to carry out the work
properly may result in electric shocks and/or electrical leaks.
Wear protective gloves and safety work clothing during installation, servicing and removal.
When repairing the electrical parts or undertaking other electrical jobs, wear gloves to provide protection for
electricians and from heat.
Failure to wear this protective gear may result in burn.
Electrical wiring work shall be conducted according to law and regulation in the community and installation manual.
Failure to do so may result in electrocution or short circuit.
Only a qualified installer (*1) or qualified service person (*1) is allowed to undertake work at heights using a stand
of 50 cm or more or to remove the electrical control cover or inspection cover of the Air to Air Heat Exchanger to
undertake work.
When working at heights, use a ladder which complies with the ISO 14122 standard, and follow the procedure in
the ladder’s instructions.
Also wear a helmet for use in industry as protective gear to undertake the work.
When working at heights, put a sign in place so that no-one will approach the work location, before proceeding with
the work.
Parts and other objects may fall from above, possibly injuring a person below.
When executing address setting, test run, or troubleshooting through the checking window on the electric parts box,
put on insulated gloves to provide protection from electric shock. Otherwise you may receive an electric shock.
Use a hand track or forklift to carry the unit. When carrying it by human power, have four persons or more;
otherwise, you may strain your back.
When transporting the Air to Air Heat Exchanger, wear shoes with protective toe caps, protective gloves and other
protective clothing.
When transporting the Air to Air Heat Exchanger, do not take hold of the bands around the packing carton.
You may injure yourself if the bands should break.
Use wiring that meets the specifications in the Installation Manual and the stipulations in the local regulations and
laws. Use of wiring which does not meet the specifications may give rise to electric shocks, electrical leakage,
smoking and/or a fire.
Exchange to parts specified in service manual, which meet the specification or listed in parts list of service manual.
Failure to use specified parts may result in electrical shock, smoke, and/or fire.
Confirm whether there is a risk of the Air to Air Heat Exchanger falling down during maintenance or repairing work.
Inspect the Air to Air Heat Exchanger unit for any falling hazard of the unit before maintenance or repair.
Before you open the Supply/Exhaust air grill, set the circuit breaker to the OFF position. Otherwise, your hand may
be caught in the rotating parts inside and an injury may result.
Check earth
wires.
After completing the repair or relocation work, check that the earth wires are connected properly.
Be sure to connect earth wire. (Grounding work) Incomplete earthing causes an electric shock.
Do not connect earth wires to gas pipes, water pipes, and lightning rods or earth wires for telephone wires.
Prohibition of
modification.
Do not modify the products. Do not also disassemble or modify the parts.
It may cause a fire, electric shock or injury.
Use specified
parts.
When any of the electrical parts are to be replaced, ensure that the replacement parts satisfy the specifications
given in the Service Manual (or use the parts contained on the parts list in the Service Manual).
Use of any parts which do not satisfy the required specifications may give rise to electric shocks, smoking and/or
a fire.

7
Do not bring a
child close to the
equipment.
If, in the course of carrying out repairs, it becomes absolutely necessary to check out the electrical parts with the
electrical control cover of one or more of the Air to Air Heat Exchanger removed in order to find out exactly where
the trouble lies, put a sign in place so that no-one will approach the work location before proceeding with the work.
Third-party individuals may enter the work site and receive electric shocks if this warning is not heeded.
Insulating
measures
Connect the cut-off lead wires with crimp contact, etc., put the closed end side upward and then apply a water-cut
method, otherwise a leak or production of fire is caused at the users’ side.
Assembly/
Wiring
After repair work, surely assemble the disassembled parts, and connect and lead the removed wires as before.
Perform the work so that the electrical control cover does not catch the inner wires.
If incorrect assembly or incorrect wire connection was done, a disaster such as a leak or fire is caused at user’s
side.
Insulator check
After the work has finished, be sure to use an insulation tester set (500V Megger) to check the resistance is 1M:
or more between the charge section and the non-charge metal section (Earth position).
If the resistance value is low, a disaster such as a leak or electric shock is caused at user’s side.
Check after
repair
Once the repair work has been completed, check for the insulation resistance.
Then perform a trial run to check that the Air to Air Heat Exchanger is running properly.
After repair work has finished, check there is no trouble. If check is not executed, a fire, electric shock or injury may
be caused. For a check, turn off the power breaker.
After repair work (installation of electrical control cover and inspection cover) has finished, execute a test run to
check there is no generation of smoke or abnormal sound.
If check is not executed, a fire or an electric shock is caused. Before test run, install the electrical control cover and
inspection cover.
Be sure to fix the screws back which have been removed for installation or other purposes.
Check after
reinstallation
Only a qualified installer (*1) or qualified service person (*1) is allowed to relocate the Air to Air Heat Exchanger. It
is dangerous for the Air to Air Heat Exchanger to be relocated by an unqualified individual since a fire, electric
shocks, injury, water leakage, noise and/or vibration may result.
Check the following items after reinstallation.
1) The earth wire is correctly connected.
2) The power cord is not caught in the product.
3) There is no inclination or unsteadiness and the installation is stable.
If check is not executed, a fire, an electric shock or an injury is caused.
Installation
Only a qualified installer (*1) or qualified service person (*1) is allowed to install the Air to Air Heat Exchanger. If
the Air to Air Heat Exchanger is installed by an unqualified individual, a fire, electric shocks, injury, water leakage,
noise and/or vibration may result.
Before starting to install the Air to Air Heat Exchanger, read carefully through the Installation Manual, and follow its
instructions to install the Air to Air Heat Exchanger.
Be sure to use the company-specified products for the separately purchased parts. Use of non-specified products
may result in fire, electric shock, water leakage or other failure. Have the installation performed by a qualified
installer.
Do not supply power from the power terminal block equipped on the outdoor unit to another outdoor unit. Capacity
overflow may occur on the terminal block and may result in fire.
Do not install the Air to Air Heat Exchanger in a location that may be subject to a risk of expire to a combustible gas.
If a combustible gas leaks and becomes concentrated around the unit, a fire may occur.
Install the Air to Air Heat Exchanger at least 2.5 m above the floor level since otherwise the users may injure
themselves or receive electric shocks if they poke their fingers or other objects into the Air to Air Heat Exchanger
while the it is running.
Install a circuit breaker that meets the specifications in the installation manual and the stipulations in the local
regulations and laws.
Install the circuit breaker where it can be easily accessed by agent.
When installing a circuit breaker outdoors, install one which is designed to be used outdoors.
Do not place any combustion appliance in a place where it is directly exposed to the wind of Air to Air Heat
Exchanger, otherwise it may cause imperfect combustion.

8
Relocation
• Only a qualified installer (*1) or qualified service person (*1) is allowed to relocate the Air to Air Heat Exchanger.
It is dangerous for the Air to Air Heat Exchanger to be relocated by an unqualified individual since a fire, electric
shocks, injury, water leakage, noise and/or vibration may result.
(*1) Refer to the “Definition of Qualified Installer or Qualified Service Person.”

9
Specifications
* Under 70 dBA
Declaration of Incorporation
of Partly Completed Machinery
NOTE
This declaration becomes invalid if technical or operational modifications are introduced without the manufacturer’s
consent.
Model Sound power level (dBA) Weight (kg)
VN-M150HE, M250HE *36
VN-M350HE *38
VN-M500HE, M650HE *53
VN-M800HE, M1000HE *70
Manufacturer: Toshiba Carrier Corporation
336 Tadehara, Fuji-shi, Shizuoka-ken 416-8521 JAPAN
Representative/
TCF holder:
Toshiba Carrier UK Ltd.
Porsham Close, Belliver Industrial Estate,
PLYMOUTH, Devon, PL6 7DB.
United Kingdom
Hereby declares that the machinery described below:
Generic Denomination: Air to Air Heat Exchanger
Model/type: VN-M150HE
VN-M250HE
VN-M350HE
VN-M500HE
VN-M650HE
VN-M800HE
VN-M1000HE
Commercial name: TOSHIBA Air to Air Heat Exchanger
Complies with the provisions of the “Machinery” Directive (Directive 2006/42/EC) and the regulations transposing
into national law.
Must not be put into service until the final machinery into which it is to be incorporated has been declared in
conformity with the provisions of Machinery Directive, where appropriate.

10
1Features
Main features
◆Power saving ventilation
The cost of cooling and heating is reduced thanks to
the unit efficiently retrieving thermal energy (outdoor
air load) which has been lost during ordinary
ventilation.
◆Space saving
Significant reduction of outdoor air load and the ability
to retrieve thermal energy enable the production of
smaller air conditioning devices.
◆Humidity control
When cooling, highly humid outdoor air is conditioned
to near the humidity of the dehumidified (cooled) indoor
air before being supplied.
When heating, moisture from the return air is
transferred to the dry outdoor air before the outdoor air
is supplied.
◆Comfortable ventilation
Ventilation without big changes in temperature is
realized.
In addition, stable ventilation is possible even in an air
tight room due to simultaneous air intake and
expulsion.
◆Sound insulation
Air trunks and heat exchange elements provide sound
insulation.
They reduce the incoming of outdoor noise and the
outward flow of sounds indoor and help keep the office
or shop, and their surroundings quiet.
◆Easy installation
The linear air supplying/exhausting method enables
simple design and installation.
Inverted installation is possible and only one inspection
slot is required for two units.
A complete inspection is possible through a single
inspection slot.
◆Other
The filter has excellent dust filtering performance
(mass spectrometry 82%).
The air volume can be switched between Extra High
and High.
The ventilation balance of air supplying and air
exhausting can be changed.
The filter inspection display function calculates the total
running time and prompts you through the remote
controller to inspect the filter.
The cold mode function automatically makes the air
supplying motor run intermittently when the outdoor air
temperature is -10°C or lower.
The timer function allows you to set the unit to start/
stop operation at the specified time.
The separately sold central controller enables central
control of 128 groups.
The separately sold wired remote controller enables
group operation control of up to 8 units.
The unit can operate in cooperation with an air-
conditioner (SMMS series, DI/SDI series).
About ventilation modes
The unit has three ventilation modes.
• Heat exchange mode
Exchanging heat between the outdoor air and return
air and making the temperature and humidity of the
outdoor air closer to those of the return air before
supplying it.
• Bypass mode
Outdoor air is taken into a room as it is. This mode is
mainly used in spring and summer.
• Automatic mode
1. For an Air to Air Heat Exchanger system
The heat exchange mode and the bypass mode are
automatically switched between following the
information from the return air and outdoor air
temperature sensors in the unit.
2. For an Air to Air Heat Exchanger system linked with
air conditioners
The heat exchange mode and the bypass mode are
automatically switched between depending on the
operation status of the air conditioner (cooling,
heating, dry, fan, or temperature setting) and the
information from the return air and outdoor air
temperature sensors in the unit.
CAUTION
If the outdoor air temperature becomes about to 15°C or
less in [Automatic mode] or [Bypass mode], the system
will automatically start to run in [Heat exchange mode]
regardless of the mode setting to prevent condensation
in the Air to Air Heat Exchanger.
* The indication of the ventilation mode setting does not
change.

11
2Specifications
Concealed microcomputer control type
Item
Model No.
Fan Speed
VN-
M150HE
VN-
M250HE
VN-
M350HE
VN-
M500HE
VN-
M650HE
VN-
M800HE
VN-
M1000HE
Type Concealed type
Power Supply (V) Single phase 220-240V~,50Hz 220V~,60Hz
Characteristics
Power
consumption
(W)
Heat
Exchange
Mode
(Extra high) 50Hz 68-78 123-138 165-182 214-238 262-290 360-383 532-569
60Hz 76 131 209 260 307 446 622
High 50Hz 59-67 99-111 135-145 176-192 240-258 339-353 494-538
60Hz 65 105 162 206 283 408 589
Low 50Hz 42-47 52-59 82-88 128-142 178-191 286-300 353-370
60Hz 45 54 94 144 206 333 411
Bypass
Mode
(Extra high) 50Hz 68-78 123-138 165-182 214-238 262-290 360-383 532-569
60Hz 76 131 209 260 307 446 622
High 50Hz 59-67 99-111 135-145 176-192 240-258 339-353 494-538
60Hz 65 105 162 206 283 408 589
Low 50Hz 42-47 52-59 82-88 128-142 178-191 286-300 353-370
60Hz 45 54 94 144 206 333 411
Current (A)
Heat
Exchange
Mode
(Extra high) 50Hz 0.31-0.33 0.58-0.61 0.76-0.76 0.99-1.00 1.25-1.30 1.67-1.63 2.47-2.46
60Hz0.360.600.991.201.402.032.84
High 50Hz 0.27-0.28 0.47-0.49 0.62-0.61 0.81-0.81 1.14-1.13 1.57-1.50 2.31-2.28
60Hz0.280.490.740.941.301.852.69
Low 50Hz 0.20-0.20 0.25-0.26 0.38-0.37 0.59-0.60 1.25-1.30 1.31-1.27 1.62-1.57
60Hz0.200.250.430.660.951.521.87
Bypass
Mode
(Extra high) 50Hz 0.31-0.33 0.58-0.61 0.76-0.76 0.99-1.00 1.25-1.30 1.67-1.63 2.47-2.46
60Hz0.360.600.991.201.402.032.84
High 50Hz 0.27-0.28 0.47-0.49 0.62-0.61 0.81-0.81 1.14-1.13 1.57-1.50 2.31-2.28
60Hz0.280.490.740.941.301.852.69
Low 50Hz 0.20-0.20 0.25-0.26 0.38-0.37 0.59-0.60 1.25-1.30 1.31-1.27 1.62-1.57
60Hz0.200.250.430.660.951.521.87
Maximum
running
Current (A)
Heat
Exchange
Mode
(Extra high) 50Hz 0.32-0.33 0.61-0.65 0.81-0.82 1.19-1.23 1.37-1.41 2.15-2.23 2.89-2.94
60Hz0.360.651.091.381.592.403.37
High 50Hz 0.27-0.28 0.46-0.49 0.61-0.62 0.87-0.91 1.17-1.20 1.84-1.94 2.57-2.61
60Hz0.300.470.730.961.342.012.95
Low 50Hz 0.20-0.21 0.25-0.26 0.42-0.44 0.64-0.68 0.90-0.95 1.49-1.58 1.85-1.87
60Hz0.210.250.450.680.981.591.96
Bypass
Mode
(Extra high) 50Hz 0.32-0.33 0.61-0.65 0.81-0.82 1.19-1.23 1.37-1.41 2.15-2.23 2.89-2.94
60Hz0.360.651.091.381.592.403.37
High 50Hz 0.27-0.28 0.46-0.49 0.61-0.62 0.87-0.91 1.17-1.20 1.84-1.94 2.57-2.61
60Hz0.300.470.730.961.342.012.95
Low 50Hz 0.20-0.21 0.25-0.26 0.42-0.44 0.64-0.68 0.90-0.95 1.49-1.58 1.85-1.87
60Hz0.210.250.450.680.981.591.96

12
Characteristics
Air Volume (m3/h)
(Extra high) 50Hz 150 250 350 500 650 800 1000
60Hz 150 250 350 500 650 800 1000
High 50Hz 150 250 350 500 650 800 1000
60Hz 150 250 350 500 650 800 1000
Low 50Hz 110 155 210 390 520 700 755
60Hz 110 155 210 390 520 700 755
External
Static
Pressure (Pa)
Heat
Exchange
Mode
(Extra high) 50Hz 82-102 80-98 114-125 134-150 91-107 142-158 130-150
60Hz 99 97 167 181 134 171 185
High 50Hz 52-78 34-65 56-83 69-99 58-82 102-132 97-122
60Hz 59 38 33 63 68 102 120
Low 50Hz 47-64 28-40 65-94 62-92 61-96 76-112 84-127
60Hz46223944525855
Bypass
Mode
(Extra high) 50Hz 82-102 80-98 114-125 134-150 91-107 142-158 130-150
60Hz 99 97 167 181 134 171 185
High 50Hz 52-78 34-65 56-83 69-99 58-82 102-132 97-122
60Hz 59 38 33 63 68 102 120
Low 50Hz 47-64 28-40 65-94 62-92 61-96 76-112 84-127
60Hz46223944525855
Sound
pressure level
(dB)
Heat
Exchange
Mode
(Extra high) 50Hz 26.0-28.0 29.5-30.0 34.0-35.0 32.5-34.0 34.0-36.0 37.0-38.5 39.5-40.5
60Hz 27.5 31.5 35.5 33.5 35.5 38 41.5
High 50Hz 24.0-25.5 25.0-27.0 30.0-32.0 29.5-31.0 33.0-34.0 35.5-37.0 38.5-40.0
60Hz 24.5 25 29.5 29 34 35 39
Low 50Hz 20.0-22.0 21.0-22.0 27.0-29.0 26.0-29.0 31.0-32.5 33.5-35.0 34.0-35.5
60Hz 20 21 23.5 24.5 29.5 32.5 33.5
Bypass
Mode
(Extra high) 50Hz 26.0-28.0 29.5-30.0 34.0-35.0 32.5-34.0 34.0-36.0 37.0-38.5 39.5-40.5
60Hz 27.5 31.5 35.5 33.5 35.5 38 41.5
High 50Hz 24.0-25.5 25.0-27.0 30.0-32.0 29.5-31.0 33.0-34.0 35.5-37.0 38.5-40.0
60Hz 24.5 25 29.5 29 34 35 39
Low 50Hz 20.0-22.0 21.0-22.0 27.0-29.0 26.0-29.0 31.0-32.5 33.5-35.0 34.0-35.5
60Hz 20 21 23.5 24.5 29.5 32.5 33.5
Temperature Exchange
Efficiency (%)
(Extra high) 50Hz 81.5 78 74.5 76.5 75 76.5 73.5
60Hz 81.5 78 74.5 76.5 75 76.5 73.5
High 50Hz 81.5 78 74.5 76.5 75 76.5 73.5
60Hz 81.5 78 74.5 76.5 75 76.5 73.5
Low 50Hz 83 81.5 79.5 78 76.5 77.5 77
60Hz 83 81.5 79.5 78 76.5 77.5 77
Enthalpy
exchange
Efficiency (%)
for
heating
(Extra high) 50Hz 74.5 70 65 72 69.5 71 68.5
60Hz 74.5 70 65 72 69.5 71 68.5
High 50Hz 74.5 70 65 72 69.5 71 68.5
60Hz 74.5 70 65 72 69.5 71 68.5
Low 50Hz 76 74 71.5 73.5 71.5 71.5 71.5
60Hz 76 74 71.5 73.5 71.5 71.5 71.5
for cooling
(Extra high) 50Hz 69.5 65 60.5 64.5 61.5 64 60.5
60Hz 69.5 65 60.5 64.5 61.5 64 60.5
High 50Hz 69.5 65 60.5 64.5 61.5 64 60.5
60Hz 69.5 65 60.5 64.5 61.5 64 60.5
Low 50Hz 71 69 67 66.5 64 65.5 64.5
60Hz 71 69 67 66.5 64 65.5 64.5
Item
Model No.
Fan Speed
VN-
M150HE
VN-
M250HE
VN-
M350HE
VN-
M500HE
VN-
M650HE
VN-
M800HE
VN-
M1000HE

13
* Sound Power Level is less than 70 dBA
* Sound pressure level of the product is the value which was measured at the acoustic room. Actually, in the
established condition, that under go influence by the echoing of the room and so that become bigger than the display
numerical value.
* The power consumption, the current and the exchange efficiency are values at the time of the mentioned air volume.
* Sound pressure level shall be measured 1.5m below the center of the unit.
* The temperature exchange efficiency averages that of when cooling and heating.
Construction
Frame Zinc steel sheets
Motor 4-pole capacitor dielectric motor (E type)
Fan PP resin
Heat exchanger Special paper + Resin
Filter Nonwoven fabric (Collection effect weighing method 82%)
Adapter Zinc steel sheets
External dimensions (Length x Width x Height)
(mm) 900 x 900 x 290 1140 x 1140 x 350 1189 x 1189 x 400
Product weight (kg) 36 38 53 70
Applicable duct nominal diameter (mm) Ø100 Ø150 Ø200 Ø250
Package
Shape Corrugated board package
Dimensions (Length x Width x Height) (mm) 1394 x 362 x 932 1634 x 422 x 1172 1683 x 472 x 1221
Weight (kg) 42 45 61 79
No. of stacked boxes 3
Accessory Adapter: 4, Screw: 16/24, Installation Manual: 1, Owner’s Manual: 1
Item
Model No.
Fan Speed
VN-
M150HE
VN-
M250HE
VN-
M350HE
VN-
M500HE
VN-
M650HE
VN-
M800HE
VN-
M1000HE

14
3Model List
Unit: mm
Item Count Material Remarks Item Count Material Remarks
Adapter 4 Galvanized steel sheet Filter 4 Nonwoven fabric
Collecting
efficiency (Mass
Spectrometry):
82%
Electrical control cover 1 Damper 1
Inspection cover 1 Galvanized steel sheet Damper motor 1
Motor (Exhaust air) 1 Hanging bracket 4 Galvanized steel sheet
Motor (Supply air) 1 Electrical control base 1 Galvanized steel sheet
Heat exchange
element 2Fire-resistant paper +
Resin
Air to air heat
exchanger Fixing lever 1 SUS304
Model name A B C D E F G H I J K L M Applicable duct
nominal diameter
VN-M150HE 900 724 88 810 957 900 454 80 Ø98 Ø110 121 290 145 Ø100
VN-M250HE 900 670 115 810 957 900 454 97 Ø145 Ø158 162 290 145 Ø150
VN-M350HE 900 670 115 810 957 900 454 97 Ø145 Ø158 162 290 145 Ø150
VN-M500HE 1140 800 170 1050 1197 1140 454 80 Ø195 — Ø212 350 175 Ø200
VN-M650HE 1140 800 170 1050 1197 1140 454 80 Ø195 — Ø212 350 175 Ø200
VN-M800HE 1189 800 195 1099 1246 1189 454 85 Ø245 — Ø262 400 200 Ø250
VN-M1000HE 1189 800 195 1099 1246 1189 454 85 Ø245 — Ø262 400 200 Ø250
D
A
B
25
L
CC
200
E
M
25
F
G
I
K
J
H H
SA
(Supply air)
RA
(Return air)
EA
(Exhaust air)
OA
(Outdoor air)
Indoor
side
Outdoor
side
Damper
Damper motor
Heat exchange element (2)
Hanging bracket (4)
4 - 13 X30 Oval hole
Electrical control base
Motor
(Supply Air)
Motor
(Exhaust air)
Fixing lever
Adapter (4)
Inspection cover
Filter (x 2)
High efficiency filter
(One for each element)
(sold separately)
Electrical control cover
Fixed part of
inspection cover

15
4Connection diagram
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.
TR
A
SW301 CN105 1
SW701
RY701
RY704
S(N)R(L) TB1
CN67
1
3
ON
OFF
1
SW702
OFF
DC 5V
DC20V
DC12V
ON
U4
TB2 U3 BA
2
OFF
CN040 1
4322341
213CN041
OFF
ON
SW703
ON
CN106 1
2
t° TOA
t°
1
7
43F22
3
43F12
5
23
43F11
5
13
55
43F21
132
C C
P01
CN701
8
43F12
FM1
M
1~ M 1~
M
FM2
777
CN704
RY705 RY702
35 13
CN760
52
134
RY709 RY708
RY710
65 1 3 975
6
CN702
43F21
888
43F11 43F22
DAM 3
12 45
TB3
4
CN705
213
CN706
1
52
1
522
B
A
+
-
Power supply for the Air
to Air Heat Exchanger
220-240V~, 50Hz
220V~, 60Hz
Earth
Air to Air Heat
Exchanger
represents the connector to switch between
Extra High and High. Wiring for central control Wiring for the remote
controller
Wired remote
controller (sold
separately)
Indoor control
circuit board
MCC1615
Connector
(White)
White
Connector
(Black)
White
Orange
External output
(220-240V~, under 1A each)
*5 External input (sold
separately)
No voltage a-contact input
Voltage DC (12V, 24V) input
Operation output
White
White White Red Red
White
Red
Blue
Black
Connector
(White *6)
White
Yellow
Yellow
Black
Brown
Blue
Black
Connector
(Red *6)
White
Red
(White)
Gray Light blue
Gray Yellow Blue Light blue Pink Brown
White Yellow Blue Black Red
(White)
(Red)
1 Common
2 Remote controller operation
3 Ventilation fan speed
4 Ventilation mode
5 Operation
(Black)
Power
supply
(Blue) (Blue)
(Brown)
(White)
Black Blue Blue Black
F01
T3.15A
250V~
Common
External damper output
Abnormal/Bypass mode output
Code Part name
CN*** Connector
F01 Fuse
FM1 Air supplying motor
FM2 Air exhausting motor
DAM Damper motor
TRA TRA sensor
Code Part name
TOA TOA sensor
RY701, RY702 Relay for air supplying motor
RY704, RY705 Relay for air exhausting motor
TB1 Terminal block (power supply)
TB2 Terminal block (communication)
TB3 Terminal block (external output)
Code Part name
SW301, SW701
SW702, SW703
DIP switch
43F11, 43F12 Relay for air supplying motor
43F21, 43F22 Relay for air exhausting motor

16
5Parts Rating
Model VN-M 150HE 250HE 350HE 500HE 650HE 800HE 1000HE
Running condenser for supply air
fan motor 450V
1ȝF
450V
1ȝF
450V
3ȝF
450V
3ȝF
450V
3ȝF
450V
5ȝF
450V
10ȝF
(5ȝF x 2)
Running condenser for exhaust
air fan motor 450V
1ȝF
450V
1ȝF
450V
3ȝF
450V
3ȝF
450V
3ȝF
450V
5ȝF
450V
10ȝF
(5ȝF x 2)
TOA sensor Ø5 size lead wire length:
900mm vinyl tube (Blue)
Ø5 size lead wire length:
1040mm vinyl tube (Blue)
TRA sensor Ø5 size lead wire length:
1010mm non-migratory tube (Black)
Ø5 size lead wire length:
1270mm non-migratory tube (Black)
Relay LY-1F
Rated voltage: AC220V/240V Rated load: 10A AC220V
Damper motor MP24ZN

17
6Control Outline
Air to Air Heat Exchanger
Control Specifications
NO. Item Specification outline Remarks
1
When the power
is reset
1. If the power supply is reset during the occurrence of an error, the check code is
cleared.
If an abnormal state continues even after the unit is restarted by pressing the [ON/
OFF] button on the remote controller, the check code is redisplayed on the remote
controller.
2
Ventilation
mode control
Air to Air Heat Exchanger system and Air to Air Heat Exchanger system linked with
air conditioners
1)Ventilation mode control
• The control method of the automatic mode is different depending on whether
it is an Air to Air Heat Exchanger system or an Air to Air Heat Exchanger
system linked with air conditioners.
• There are three ventilation modes: Automatic, Heat Exchange, and Bypass.
2)When a system without a remote controller or RBC-AMT32E, RBC-AMS41E
remote controller is used:
• The ventilation mode can be changed with CODE No. (DN) [EA] of the DN
setting.
3)Bypass mode control
• If OA RA/10 + 12.5, the system automatically runs in Heat Exchange mode
to prevent condensation. (For details, see the section “Cold Mode Control.”)
• The display on the remote controller remains “Bypass” regardless of the
ventilation mode in actual operation.
• When operation starts in Bypass mode, the Heat Exchange mode is
maintained for three minutes if the state before stop is Heat Exchange mode
(cold mode control).
1. Air to Air Heat Exchanger system
1)Automatic mode control
• One of the following three zones is selected by the TOA and TRA sensors:
Cooling zone, Fan zone, Heating zone
• Automatic ventilation control is performed in the Cooling and Heating zones.
• For the Fan zone, the mode is fixed to Heat Exchange.
• For five minutes after the start of Automatic mode, the Heat Exchange state is
maintained.
• The display on the remote controller remains “Automatic” regardless of the
ventilation mode in actual operation.
2)Criteria for each zone:
[Cooling zone]
OA 24°C or OA 20°C and RA 24°C
[Fan zone]
20°C OA < 24°C and 20°C RA < 24°C
[Heating zone]
Temperature range out of the Cooling and Fan zones
3)Bypass mode condition in automatic ventilation control
[Cooling zone]
RA 26°C and OA 22°C and RA OA + 3°C
[Heating zone]
RA 18°C and RA/10°C + 14.5°C OA 22°C and OA RA + 3°C
• If the system is in an undefined zone when operation starts, the system is
operated in Heat exchange mode. If the state moves to this zone during
operation, the previous state is retained.
TOA sensor
TRA sensor
CODE No. (DN)
[EA] [EC]

18
2
Ventilation
mode control
(continued)
NO. Item Specification outline Remarks
48
12 16 20 24 28 32
8
12
16
20
24
28
32
Automatic ventilation mode control in the Air to Air Heat
Exchanger system
Heat Exchange Cooling zone
Bypass
Fan zone
Heat Exchange
Bypass
Heat Exchange
Heating zone
Undefined
zone
Undefined
zone
OA: Outdoor Air (°C)
RA: Return Air (°C)
Cooling zone Heating zone
Bypass
Y
N
Y
N
N
Y
N
Y
N
Y
N
Y
Fan zone
Heat Exchange
Continue current ventilation mode
Y
N
Y
N
Y
N
Y
N
N
Y
Start operation
Y
N
OA 24°C
RA 24°C
RA 20°C
OA 20°C
Automatic ventilation determination
in air-conditioning linkage
RA, OA
detection
DN [EC]
Invalid: 0002
DN [EC]
Valid when stopped:
0001
Other than Fan
mode
and OA RA + 3°C
RA 18°C and RA/
10°C + 14.5°C OA 22°C
RA 26°C and OA 22°C
RA OA + 3°C
Air
conditioner
operation
Ventilation
mode Automatic
Single system

19
2
Ventilation
mode control
(continued)
2. Air to Air Heat Exchanger system linked with air conditioners
1)Automatic ventilation mode control in the air-conditioning linkage
• Determine the mode from the operation mode of the air conditioner.
[Cooling zone]: The air conditioner operation mode is Automatic cooling,
Cooling, or Drying mode.
[Heating zone]: The air conditioner operation mode is Automatic heating or
Heating mode.
In Fan mode, the zone is determined by the automatic ventilation mode control
in the Air to Air Heat Exchanger system.
• The setting of the automatic ventilation control in the Air to Air Heat Exchanger
system linked with air conditioners can be changed with CODE No. (DN) [EC]
of the DN setting.
0000: Valid only when the air conditioner is running (factory default). When the
air conditioner is stopped, the zone is determined by the automatic
ventilation mode control of the Air to Air Heat Exchanger system.
0001: Valid even if the air conditioner is stopped. If the air conditioner is
stopped, the zone is determined by the operation mode and set
temperature before stop.
0002: Invalid. The zone is determined by the automatic ventilation mode
control in the Air to Air Heat Exchanger system.
2)The Bypass condition at the time of automatic ventilation mode control in the Air
to Air Heat Exchanger system linked with air conditioners (excluding Fan mode)
[Cooling zone]
RA OA + 3°C and RA set temperature + 2°C and OA RA/10°C + 14.5°C
and RA 20°C
[Heating zone]
OA RA + 3°C and RA set temperature - 2°C and OA RA/10°C + 14.5°C
and RA 27°C
• Condition for returning to Heat Exchange (determined by the set temperature
before stop, even when the air conditioner is stopped)
(For details, see the section “Cold Mode Control.”)
[Cooling zone] RA set temperature - 2°C or RA 18°C
[Heating zone] RA set temperature + 2°C or RA 29°C
• If the system is in an undefined zone when operation starts, the system is
operated in Heat exchange mode. If the state moves to this zone during
operation, the previous state is retained.
NO. Item Specification outline Remarks
48
12 16 20 24 28 32
8
12
16
20
24
28
32
Automatic ventilation mode control in the Air to Air Heat
Exchanger system linked with air conditioners
Cooling zone
Heat Exchange
Bypass
Undefined
zone
OA: Outdoor Air (°C)
RA: Return Air (°C)
Minimum set
temperature