Vents MPA 700 W EC A30 User manual

MPA 700 W EC A30/31/32
MPA 1000 W EC A30/31/32
MPA 1500 W EC A30/31/32
MPA 2000 W EC A30/31/32
MPA 3000 W EC A30/31/32
MPA 4000 W EC A30/31/32
USER'S MANUAL
Single-block air supply unit

2
MPA 700/1000/1500/2000/3000/4000 W EC A30/31/32
www.ventilation-system.com
Safety requirements..................................................................................................................................................................... 3
Purpose................................................................................................................................................................................................ 5
Delivery set........................................................................................................................................................................................ 5
Designation key.............................................................................................................................................................................. 5
Technical data.................................................................................................................................................................................. 6
Design and operating principle ........................................................................................................................................... 9
Mounting and set-up.................................................................................................................................................................. 13
Connection to power mains .................................................................................................................................................. 17
Technical maintenance.............................................................................................................................................................. 20
Troubleshooting............................................................................................................................................................................. 21
Storage and transportation regulations.......................................................................................................................... 21
Manufacturer’s warranty........................................................................................................................................................... 22
Certificate of acceptance.......................................................................................................................................................... 23
Seller information.......................................................................................................................................................................... 23
Installation certificate.................................................................................................................................................................. 23
Warranty card................................................................................................................................................................................... 23
This user’s manual is a main operating document intended for technical, maintenance, and operating staff.
The manual contains information about purpose, technical details, operating principle, design, and installation of the
MPA 700/1000/1500/2000/3000/4000 W EC A30/31/32 unit and all its modifications.
Technical and maintenance staff must have theoretical and practical training in the field of ventilation systems and should be able to
work in accordance with workplace safety rules as well as construction norms and standards applicable in the territory of the country.
CONTENTS

3
www.ventilation-system.com
This unit is not intended for use by persons (including children) with reduced physical, sensory
or mental capabilities, or lack of experience and knowledge, unless they have been given
supervision or instruction concerning use of the unit by a person responsible for their safety.
Children should be supervised to ensure that they do not play with the unit.
This appliance can be used by children aged from 8 years and above and persons with reduced
physical, sensory or mental capabilities or lack of experience and knowledge if they have been
given supervision or instruction concerning use of the appliance in a safe way and understand
the hazards involved.
Cleaning and user maintenance shall not be made by children without supervision.
Children shall not play with the appliance.
This appliance incorporates an earth connection for functional purposes.
Connection to the mains must be made through a disconnecting device, which is integrated
into the fixed wiring system in accordance with the wiring rules for design of electrical units,
and has a contact separation in all poles that allows for full disconnection under overvoltage
category III conditions.
If the supply cord is damaged, it must be replaced by the manufacturer, its service agent, or
similarly qualified persons in order to avoid a safety hazard.
Ensure that the unit is switched off from the supply mains before removing the guard.
WARNING: If there are any unusual oscillating movements, immediately stop using the unit and
contact the manufacturer, its service agent or suitably qualified persons.
The replacement of parts of the safety suspension system device shall be performed by the
manufacturer, its service agent or suitably qualified persons.
CAUTION: In order to avoid a safety hazard due to inadvertent resetting of the thermal cut-
out, this unit must not be supplied through an external switching device, such as a timer, or
connected to a circuit that is regularly switched on and off by the utility.
Precautions must be taken to avoid the back-flow of gases into the room from the open flue of
gas or other fuel-burning appliances.
The appliance may adversely affect the safe operation of appliances burning gas or other
fuels (including those in other rooms) due to back flow of combustion gases. These gases can
potentially result in carbon monoxide poisoning. After installation of the unit the operation
of flued gas appliances should be tested by a competent person to ensure that back flow of
combustion gases does not occur.
SAFETY REQUIREMENTS

4
MPA 700/1000/1500/2000/3000/4000 W EC A30/31/32
www.ventilation-system.com
THE PRODUCT MUST BE DISPOSED SEPARATELY AT THE END OF ITS
SERVICE LIFE.
DO NOT DISPOSE THE UNIT AS UNSORTED DOMESTIC WASTE
All operations described in this manual must be performed by qualified personnel only, properly
trained and qualified to install, make electrical connections and maintain ventilation units.
Do not attempt to install the product, connect it to the mains, or perform maintenance yourself.
This is unsafe and impossible without special knowledge.
Disconnect the power supply prior to any operations with the unit.
All user’s manual requirements as well as the provisions of all the applicable local and national
construction, electrical, and technical norms and standards must be observed when installing
and operating the unit.
Disconnect the unit from the power supply prior to any connection, servicing, maintenance, and
repair operations.
Connection of the unit to power mains is allowed by a qualified electrician with a work permit
for the electric units up to 1000 V after careful reading of the present user’s manual.
Check the unit for any visible damage of the impeller, the casing, and the grille before starting
installation. The casing internals must be free of any foreign objects that can damage the
impeller blades.
While mounting the unit, avoid compression of the casing! Deformation of the casing may result
in motor jam and excessive noise.
Misuse of the unit and any unauthorised modifications are not allowed.
Do not expose the unit to adverse atmospheric agents (rain, sun, etc.).
Transported air must not contain any dust or other solid impurities, sticky substances, or fibrous
materials.
Do not use the unit in a hazardous or explosive environment containing spirits, gasoline,
insecticides, etc.
Do not close or block the intake or extract vents in order to ensure the efficient air flow.
Do not sit on the unit and do not put objects on it.
The information in this user’s manual was correct at the time of the document’s preparation.
The Company reserves the right to modify the technical characteristics, design, or configuration
of its products at any time in order to incorporate the latest technological developments.
Never touch the unit with wet or damp hands.
Never touch the unit when barefoot.
BEFORE INSTALLING ADDITIONAL EXTERNAL DEVICES, READ THE RELEVANT USER MANUALS.

5
www.ventilation-system.com
The product is designed for filtering, supplying and heating the supply purified air in private residences, offices, hotels, cafes, conference
rooms and other domestic and public spaces.
The unit is a component part and is not designed for stand-alone operation.
Transported air must not contain any flammable or explosive mixtures, evaporation of chemicals, sticky substances, fibrous materials,
coarse dust, soot and oil particles or environments favourable for the formation of hazardous substances (toxic substances, dust,
pathogenic germs).
The unit must not be used for purposes other than those specified in this manual or outside the ambient conditions specified herein.
The unit is rated for continuous operation.
DESIGNATION KEY
Name MPA 700/1000/1500/2000/3000/4000 W EC А31 MPA 700/1000/1500/2000/3000/4000 W EC А30/32
MPA unit 1 pc. 1 pc.
Remote controller – 1 pc.
Outdoor temperature sensor 1 pc. 1 pc.
User’s manual 1 pc. 1 pc.
Packing box 1 pc. 1 pc.
PURPOSE
DELIVERY SET
MPA 1000 W 4 EC LA31
Automatic control system
A30 — kVent controller with th-Tune remote controller
A31 — kVent controller without the remote controller
A32 — kVent controller with pGDE remote controller
Connection side
L — left
R — right
Motor type
EC — electronically commutated
Number of heat exchanger rows
Heater type
W — water heater
Maximum air ow [m3/h]
Unit type
MPA — single-block air supply unit

6
MPA 700/1000/1500/2000/3000/4000 W EC A30/31/32
www.ventilation-system.com
Overall and connection dimensions of MPA 700 W EC A30/31/32
L
B
B1
B2
H
H1
L1
L4
L3
L5
L6
D, ‘‘
øD
L2
Model LL1 L2 L3 L4 L5 L6 D, ‘‘ 1 BB1 B2 øD
MPA 700 W EC A30/31/32 972 850 903 160 225 218 65 3
/
4‘‘ 370 351 460 353 565 250
TECHNICAL DATA
The unit is designed for indoor application with the ambient temperature ranging from +1 °C up to +40 °C and relative humidity up to
80 % without condensation. The transported air temperature should be from -30 °C to +40 °C with a relative humidity no more than 90%.
The unit is rated as a class I electric appliance.
Hazardous parts access and water ingress protection rating:
• IP22 for the unit connected to the air ducts
• IP44 for the unit motors
The unit design is constantly being improved, thus some models may be slightly different from those described in this manual.

7
www.ventilation-system.com
Overall and connection dimensions of the models
MPA 1000 W EC A30/31/32, MPA 1500 W EC A30/31/32, MPA 2000 W EC A30/31/32, MPA 3000 W EC A30/31/32,
MPA 4000 W EC A30/31/32 (without side panels)
D, ‘‘
L3
L4
H
H
H1
H2H3
B
M6
B1
B2
L
L1
L2
Model LL1 L2 L3 L4 D H H1 H2 H3 BB1 B2
MPA 1000 W EC A30/31/32 840 770 500 250 65 1‘‘ 393 348 95 160 746 653 600
MPA 1500 W EC A30/31/32 840 770 500 318 65 1‘‘ 453 408 95 250 847 754 700
MPA 2000 W EC A30/31/32 840 770 500 318 65 1‘‘ 453 408 95 250 847 754 700
MPA 3000 W EC A30/31/32 1140 1070 600 368 65 11
/
8‘‘ 513 468 95 310 944 853 800
MPA 4000 W EC A30/31/32 1140 1070 600 380 65 13 /
8‘‘ 563 518 95 360 1087 993 940

8
MPA 700/1000/1500/2000/3000/4000 W EC A30/31/32
www.ventilation-system.com
Overall and connection dimensions of the models
MPA 1000 W EC A30/31/32, MPA 1500 W EC A30/31/32, MPA 2000 W EC A30/31/32, MPA 3000 W EC A30/31/32,
MPA 4000 W EC A30/31/32 (with optional side panels)
B1
L
B2
H
H1
B
L1
L2
L3
H3
H2
B3
B4
4xM6
Model LL1 L2 L3 HH1 H2 H3 BB1 B2 B3 B4
MPA 1000 W EC A30/31/32 900 770 300 190 393 380 220 200 746 653 600 400 420
MPA 1500 W EC A30/31/32 900 770 350 220 453 440 270 250 847 754 700 500 520
MPA 2000 W EC A30/31/32 900 770 350 220 453 440 320 300 847 754 700 500 520
MPA 3000 W EC A30/31/32 1200 1070 400 250 513 500 320 300 944 853 800 600 620
MPA 4000 W EC A30/31/32 1200 1070 470 275 563 550 420 400 1087 993 940 700 720

9
www.ventilation-system.com
1
6
2
4
3
5
51
2
7
4
6
3
8.2
8.2
8.1
8.1
The unit is housed in a sound-insulated galvanized steel casing (item 1). The unit casing has 4 mounting brackets with anti-vibration
connectors for ceiling or wall mounting (item 5).
The air flow direction is indicated by the arrow on the fan casing.
The bottom side of the casing is covered by a removable cover (item 2), which is secured with 4 bolts (item 4).
A control unit (item 3) is installed on the casing. The power and control cables are pulled through cable glands (item 6). The unit is
equipped with a water heater.
On side surfaces of the units there are openings for connecting heat medium supply (item 8.1) and return (item 8.2) pipes.
To facilitate unit's connection to the heat medium supply and return pipelines, the water heat exchanger can be moved to connect
either on the right or left side of the casing, regardless of the location of the control unit.
Models MPA 1000 W EC A30/31/32, MPA 1500 W EC A30/31/32, MPA 2000 W EC A30/31/32, MPA 3000 W EC A30/31/32,
MPA 4000 W EC A30/31/32 are supplied without the side panels (item 7) and are intended for installation directly into a rectangular air
duct. Side panels (ordered separately) allow connecting the unit to air ducts through flexible inserts.
For ease of electrical connection, the units can be ordered with the control unit located either on right or left side of the casing (right- and
left-side versions, respectively, as indicated in the "Designation key" section).
If necessary, the control unit can be moved to the other side of the unit casing before being installed in the ventilation system.
Technical specifications of the particular model are indicated on the unit casing.
DESIGN AND OPERATING PRINCIPLE

10
MPA 700/1000/1500/2000/3000/4000 W EC A30/31/32
www.ventilation-system.com
The figure below shows the internals of the left and right version of the units with the removable cover removed. The air flow direction
is indicated by the arrows.
• The inlet and outlet spigots for duct connections (item 1 and 2 respectively);
• air filter with G4 filtration class (item 3);
• thermostat (item 4);
• water heater (item 5);
• fan unit (item 6).
Левый
Правый
1 3 4 5 6 2
VIEW FROM THE MAINTENANCE SIDE
MPA ... L
MPA ... R
TOP VIEW
MPA ... L MPA ... R

11
www.ventilation-system.com
3 4 56
VIEW FROM THE MAINTENANCE SIDE
MPA ... R
MPA ... L

12
MPA 700/1000/1500/2000/3000/4000 W EC A30/31/32
www.ventilation-system.com
The unit supplies heated and filtered outdoor air into the room.
The unit uses a frameless radial fan directly driven by an external rotor motor. The fan impeller blades are curved backwards. The motor
has built-in thermal protection and requires no maintenance.
The air after filtration passes through a water heater.
To maintain the set air temperature in the supply air duct, the unit's automatic control system regulates the heat medium flow rate
through the water heater.
The unit has double protection against heat medium freezing.
When air temperature drops downstream the heater below the set point, the thermostat is activated, the fan is switched off and
the maximum heat medium flow rate is set. When air temperature rises again above the set threshold, the thermostat returns to its
original position and the unit resumes its previous operation. Automatic turn on of the unit is possible three times in a row within
one hour. After this thermostat is triggered for the fourth time, the fan does not start and the automatic control system displays an
error message (code A002). In this situation, operator's involvement is required to restart the unit.
When the temperature of the heat transfer medium at the heat exchanger outlet drops below a set threshold (the threshold
value is set from the remote controller or via the web interface of the automatic control system), the fan stops and the maximum
heat medium flow rate is set. When the temperature at the heat exchanger outlet rises above the set threshold again, the unit
will resume its previous operation. Automatic turn on of the unit is possible three times in a row within one hour. After the fourth
triggering of this thermostat, the fan does not start and the automatic control system displays an error message (code A033).
In this situation, operator's involvement is required to restart the unit.

13
www.ventilation-system.com
MPA 700 W EC A30/31/32 units are equipped with branch pipes for connection to circular air ducts.
MPA 1000 W EC A30/31/32, MPA 1500 W EC A30/31/32, MPA 2000 W EC A30/31/32, MPA 3000 W EC A30/31/32,
MPA 4000 W EC A30/31/32 units are installed in a system of rectangular air ducts that are connected either directly to the unit casing
or through the side panels.
The units are installed between the ducts, taking into account the direction of air flow, which is indicated by an arrow on the casing.
WARNING!
• To reduce aerodynamic losses related to air flow turbulence, use shaped reducers in order to reduce or increase the cross-section
of air ducts.
• To minimise turbulence-induced air pressure losses, connect the straight air duct sections on both sides of the unit. Minimum
straight air duct length: equal to 1 air duct diameter on intake side and 3 air duct diameters on outlet side.
• It is necessary to protect the internal parts of the unit from penetration of foreign objects. For example, install a grill with a cell side
size of no more than 12.5 mm to prevent free access to the fan and foreign objects from entering the unit.
• It is recommended to connect the duct through a flexible connection to reduce noise and vibration transmission. Such connections
allow compensating for possible mounting inaccuracies when connecting the unit to air ducts.
• The equipment and air ducts that are to be connected must have their own mounting bracket in order to avoid transferring their
own weight loads to the unit.
The unit must be mounted so that it can be accessed for service purposes. Enough space must be provided for the cover to open all
the way. After removing the screws, the cover will hang on special cables.
Installation is possible on the ceiling or on the wall in such a way that the air flow is horizontal. In this case, the control unit can be
located both above and below.
The mounting is carried out at 4 points with mounting brackets. It is recommended to use anchor threaded rods with nuts for fastening
the unit. The vibration mounts on the unit casing must fit snugly against the ceiling or wall surface.
Fasteners for the unit mounting are not included into delivery set and should be ordered separately. While choosing fasteners consider
the material of the mounting surface and the unit weight. For selection of the fasteners for unit mounting please refer to a service
technician.
Install the outdoor temperature sensor in the air duct downstream of the unit along the air flow.
Nuts
Washer
Anti-vibration
connector
Threaded rod
Vibration mount
The units are available in the right- or left-side versions depending on the location of the control unit relative to the air flow direction.
READ THE USER'S MANUAL BEFORE INSTALLING THE UNIT.
BEFORE INSTALLING ADDITIONAL EXTERNAL DEVICES,
READ TO THE APPROPRIATE USER MANUALS
WHILE INSTALLING THE UNIT ENSURE CONVENIENT ACCESS FOR SUBSEQUENT
MAINTENANCE AND REPAIR.
ALL OPERATIONS DESCRIBED IN THIS USER’S MANUAL MUST BE PERFORMED BY
QUALIFIED PERSONNEL ONLY, PROPERLY TRAINED AND QUALIFIED TO INSTALL AND
MAINTAIN VENTILATION EQUIPMENT.
DO NOT ATTEMPT TO INSTALL THE PRODUCT YOURSELF.
IT IS UNSAFE AND IMPOSSIBLE WITHOUT SPECIAL KNOWLEDGE.
MOUNTING AND SETUP

14
MPA 700/1000/1500/2000/3000/4000 W EC A30/31/32
www.ventilation-system.com
The units are assembled in such a way that the water heater connections are placed on the opposite side of the control unit.
The unit design allows moving the control unit and water heater to the opposite side of the casing. This allows for more efficient
placement of equipment and communications during the installation of the ventilation system.
Connecting the water heater
Supply and return pipes must be connected in such a manner so that the direction of the heat medium flow would be opposite to the air
flow (counter-flow connection). This allows reaching the maximum power output of the water heater. All technical characteristics of the
units are given for counter-flow connection. With a direct-flow connection, the water heater has a reduced power output and becomes
more resistant to freezing.
Connection points for the heat medium inlet and outlet are marked with stickers on both sides of the casing.
Heat exchanger's connection to the heat medium supply system must allow for easy disassembly when the heat exchanger is removed
for maintenance.
The following is a typical diagram of the heat medium supply system (not included in the delivery set) for connecting the water heater.
M
12
2
35
6
4
789
1. Unit's water heater
2. Shut-off ball valves
3. Circulation pump
4. Bypass control valve
5. Boiler
6. Water heater control valve with
actuator
7. Check valve
8. Coarse filter
9. Water pressure sensor (nc)
Moving the control unit to the opposite side of the casing
If you want to move the control unit before connecting the unit to the power supply and external devices, perform the below steps in
the following order:
1. Position the unit on the surface by placing it on the vibration mounts with the removable cover upward. Remove the control unit
cover as shown in the figure below.
2. Remove the removable cover from the unit casing. To do this, remove the 4 screws that secure the cover and the screws that secure
the safety cables to the unit casing as shown in the figure below.
3. Label the wires connected to all devices in the control unit. Remember, photograph or write down the connection points of all cables.
4. Disconnect all cables and pull them out through cable glands inside the unit casing. Route all cables to the other side of the unit
casing and run them through the cable glands on the opposite side. Secure the cables in the new position with cable ties.
5. Move the triac assembly on the cooling radiator (item 4 in the figure in the "Design and operating principles”section) together with the
mounting bracket to the opposite side of the unit casing.
6. Remove the screws that secure the chassis with the automation elements in the control unit (highlighted in gray in the figure below).
Then remove the screws that secure the control unit cover. The screws are indicated with arrows in the figure below. Install the control

15
www.ventilation-system.com
unit and chassis on the other side of the casing in reverse order using the same screws.
7. Connect all cables inside the unit in the new location at the same points as before disassembly. Reinstall the control unit cover.
8. Reinstall the removable cover of the unit casing. The cover can be rotated and secured so that it hangs on the safety cables on the
convenient side during maintenance work on the unit. Threaded holes are provided on both sides for attaching the cables to the casing.
Moving the water heater for connecting on the opposite side of the casing
To move the water heater prior to connecting the unit to the heat medium supply system, perform the following steps:
1. First, perform the steps described in points 1 and 2 of the section "Moving the control unit to the opposite side of the casing".
2. Disconnect the cable connector from the thermostat and the return heat medium temperature sensor.
3. Remove 8 screws that secure the water heater to the unit housing. The screws are indicated with arrows in the figure below.
4. Remove the water heater, turn it over as shown in the figure below and secure it in the new position using the same screws.
In models MPA 1000 W EC A30/31/32, MPA 1500 W EC A30/31/32, MPA 2000 W EC A30/31/32, MPA 3000 W EC A30/31/32,
MPA 4000 W EC A30/31/32 the thermostat is moved in the same way. Mounting points for installing the thermostat are provided on
both sides of the unit casing.

16
MPA 700/1000/1500/2000/3000/4000 W EC A30/31/32
www.ventilation-system.com
5. Remove the rubber plugs from the holes in the unit casing opposite the heater connections. Using a narrow utility knife cut a hole in
the soundproofing material layer corresponding to the size of the opening in the outer casing of the unit.
6. Reroute the cables of the thermostat and return heat medium temperature sensor to the new connection location. Secure the cables
in the new position with cable ties. Connect the cable connector of the thermostat and the return heat medium temperature sensor.
7. Reinstall the cover of the unit casing. The cover can be rotated and secured so that it hangs on the safety cables on the convenient side
during maintenance work on the unit. Threaded holes are provided on both sides for attaching the cables to the casing.

17
www.ventilation-system.com
The connection must be made using durable, insulated and heat-resistant conductors (cables, wires).
The external power input must be equipped with an automatic circuit breaker built into the stationary wiring to open the circuit in the
event of overload or short-circuit.
The position of the external circuit breaker must ensure free access for quick unit power-off.
The trip current of the automatic circuit breaker must exceed the maximum current consumption of the unit (refer to the “Technical
data”section or to the unit label). It is recommended to select the rated current of the circuit breaker from the standard series, following
the maximum current of the connected unit.
The circuit breaker is not included in the delivery set.
The units are designed to be powered from a single-phase 230 V AC, 50 Hz network.
The conductors' cross section value is indicative. The actual wire cross section selection must be based on the type of wire, its maximum
allowable heating, insulation, length and installation method.
To connect the power supply and external devices, unscrew the two screws on the cover of the control unit and remove the cover, as
shown in the figure in the "Mounting and set-up" section.
Route the power supply cable and the cables for connecting the remote controller and the external temperature sensor through the
cable glands to the control unit and connect them according to the wiring diagram.
Attention! In order to ensure correct operation of the unit's control automation, the external temperature sensor must be
installed in the supply air duct before the unit in the airow path.
The sensor is included in the delivery set.
Wiring diagrams for power supply and external devices are shown in the figures below.
MPA 700 W EC A30/31/32, MPA 1000 W EC A30/31/32, MPA 1500 W EC A30/31/32, MPA 2000 W EC A30/31/32
X1
2,5А
F5*
K2.1*
М2* S M 1*/S M 2*
L N PE
4 5 6
М3*
K2*
K2:A2 K2:A1
7 8
G N D +24V
61
X2
G N D G N D
8 9
X2
out
0-10V
out
0-10V
Y2 Y3
A1
SМ3*
C C U *
D_ in
DI3
A1
D_in
DI4
A1
PK1 * D D 1 * RT1*
+24V G N D
1 2
X2 in
0-10V
B1
A1
10
X2
B4
A1
B1*
5А0,5А
2,5А
LNEP
L1 F2 F 3 F4N 1 2 3
F1
20 21
~ 22 0 V, 5 0 H z
+24V G N D Rx- Rx+ G N D
1 2 345
X2
A3 **
S M 1*/SM 2 *
X1
2,5А
X2X2
X1
G N D NTC
SM _ L SM _ L1 SM _ N
G ra y W hite Brow n Yello w G re en
Electric shock hazard!
Power input
or
DISCONNECT THE POWER SUPPLY PRIOR TO ANY OPERATIONS WITH THE UNIT.
CONNECTION OF THE UNIT TO POWER MAINS IS ALLOWED BY A QUALIFIED
ELECTRICIAN WITH A WORK PERMIT FOR THE ELECTRIC UNITS UP TO 1000 V AFTER
CAREFUL READING OF THE PRESENT USER’S MANUAL.
THE RATED ELECTRICAL PARAMETERS OF THE UNIT ARE GIVEN ON THE
MANUFACTURER’S LABEL.
CONNECTION TO POWER MAINS

18
MPA 700/1000/1500/2000/3000/4000 W EC A30/31/32
www.ventilation-system.com
MPA 3000 W EC A30/31/32
3,15А
F1
X1
2,5А
F5*
K2.1*
М2* S M 1*/S M 2*
L N PE
4 5 6
М3*
K2*
K2:A2 K2:A1
7 8
G N D +24V
61
X2
G N D
G N D
8 9
X2
out
0-10V
out
0-10V
Y2 Y3
A1
SМ3*
C C U *
D_ in
DI3
A1
D_in
DI4
A1
PK1 * D D 1 *
+24V
G N D
1 2
X2 in
0-10V
B1
A1
B1*
5А0,5А
LN SM _ L SM _ L1 SM _ N EP
L1 F2 F 3 F4N 1 2 3
20 21
~ 22 0 V, 5 0 H z
+24V G N D Rx- Rx+ G N D
1 2 345
X2
A3**
S M 1*/SM 2 *
X1
RT1*
10
X2
B4
A1
G N D NTC
G ra y W hite Brow n Yello w G re en
Electric shock hazard!
Power input
or
MPA 4000 W EC A30/31/32
SM _ L SM _ L1 SM _ N
5А
F1
X1
2,5 А
F5*
K2.1*
М2* S M 1*/S M 2*
L N PE
4 5 6
М3*
K2*
K2:A2 K 2:A1
7 8
GND +24V
61
X2
G N D G N D
8 9
X2
out
0-10V
out
0 -1 0V
Y2 Y3
A1
SМ3*
C C U *
D_ in
D I3
A1
D_in
DI4
A1
P K 1* D D 1 *
+24V GND
1 2
X2 in
0-10V
B1
A1
B1*
5А0,5А
LNEP
L1 F2 F 3 F4N 1 2 3
20 21
~2 20V , 5 0H z
+24V
G N D Rx- R x+ G N D
123 4 5
X2
A3**
S M 1*/SM 2 *
X1
RT1*
10
X2
B4
A1
G N D NTC
G ra y W hite Brow n Yello w G re en
Power input
Electric shock hazard!
or

19
www.ventilation-system.com
The interpretation of the designations and the characteristics of the connection cables are given in the table.
Designation Name Wire type Note
A3** Remote controller ThTune 5x0.25 ThTune
B1* CO2 sensor or RH1 humidity sensor 3x0.25
CCU* Cooler control 2x0.75
DD1* Dry-run protection relay 2x0.5 Remove the jumper 21
F5* Fuse for the exhaust motor Depending on the M2
K2* Switching on the exhaust motor 2x0.5 For M2 connection
M2* Extract fan 2x0.75 On/Off
M3* Water pump 2x0.5
PK1* Contact from fire alarm panel 2x0.5 Remove the jumper 20
PD1* Differential pressure sensor 2x0.25
SM1* Three-position supply damper actuator 3x0.5
SM1* Two-position supply damper actuator 2x0.5
SM2* Three-position exhaust damper actuator 3x0.5
SM2* Two-position exhaust damper actuator 2x0.5
SM3* Return heat medium valve 3x0.5 0-10V
RT1 Outdoor temperature sensor 2x0.25
*Is not included in the delivery set ** The unit is equipped with a PGDE or Th Tune remote controller on
customer's request

20
MPA 700/1000/1500/2000/3000/4000 W EC A30/31/32
www.ventilation-system.com
Flip the lock to release the filter
Maintenance operations of the unit are required 3-4 times per year.They include general cleaning of the unit and the following operations:
1. Filter maintenance (3-4 times per year).
Dirty filters increase air flow resistance, which leads to a decrease in the supply of supply air to the room and creates preconditions for
occurrence of faults. Filters should be replaced as they become dirty, but no less than 3-4 times a year.
To change the filters, remove the unit casing cover (item 2 in the section "Unit design and operating principle").
Rotate the lock that holds the filter. Carefully remove the dirty filter.
Install new filters and cover in reverse order.
For new filters, contact the Seller.
2. Fan maintenance (once per year).
Even in case of regular maintenance of the filters, some dust may accumulate inside the fans and reduce the fan performance
and supply air flow. Clean the fans with a soft brush or cloth. Do not use water, aggressive solvents, or sharp objects as they may
damage the impeller.
3. Ductwork system maintenance (once in 5 years).
Even regular fulfilling of all the maintenance operations prescribed above may not completely prevent dirt accumulation in the air ducts,
which reduces the system capacity. Duct maintenance means regular cleaning or replacement.
4. Control unit maintenance (as required).
TECHNICAL MAINTENANCE
DISCONNECT THE UNIT FROM POWER SUPPLY BEFORE ANY MAINTENANCE
OPERATIONS!
MAKE SURE THE UNIT IS DISCONNECTED FROM POWER MAINS BEFORE REMOVING
THE PROTECTION
AVOID LIQUID SPILLS ON THE MOTOR! DO NOT USE AGGRESSIVE SOLVENTS AND
SHARP OBJECTS FOR CLEANING!
PRIOR TO COMMENCING ANY TECHNICAL MAINTENANCE PUT UP A PROHIBITORY
SIGN ON THE FAN STARTING PANEL:
“DO NOT SWITCH ON! MEN AT WORK!”