Vents MPA W Series User manual

Single-block air supply unit
with water heater
USER’S MANUAL
MPA ... W
MPA ... W LCD
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2
CONTENTS
Safety requirements ............................................................................................... 3
Introduction .............................................................................................................. 5
Purpose ....................................................................................................................... 5
Delivery set ................................................................................................................ 5
Designation key ....................................................................................................... 5
Technical data ........................................................................................................... 6
Unit design and operating logic ........................................................................ 9
Mounting and set-up ............................................................................................. 9
Connection to power mains ................................................................................ 11
Unit control ............................................................................................................... 12
Technical maintenance ......................................................................................... 13
Troubleshooting ...................................................................................................... 13
Storage and transportation regulations ......................................................... 14
Manufacturer's warranty ...................................................................................... 15
Acceptance certificate ........................................................................................... 15
Installation certificate ............................................................................................ 15
Seller information ................................................................................................... 15
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SAFETY REQUIREMENTS
• Read the user’s manual carefully prior to the operation and installation of the MPA…W / MPA... W LCD air supply unit.
• Fulfil the operation manual requirements as well as the provisions of all the applicable local and national construction,
electrical and technical codes and standards.
• The warnings contained in the user’s manual must be considered most seriously since they contain vital personal safety
information.
• Failure to follow the safety requirements may result in an injury or unit damage.
• Read the manual carefully and keep it as long as you use the unit.
• While transferring the unit control the user’s manual must be turned over to the receiving operator.
Symbol legend used in the manual:
WARNING!
DO NOT!
UNIT MOUNTING AND OPERATION SAFETY PRECAUTIONS
Disconnect the unit from power
mains prior to any installation
operations.
The unit must be grounded!
Do not operate the unit outside
the temperature range stated
in the user’s manual. Do not
operate the unit in aggressive or
explosive environments.
Do not use damaged equipment
or cables when connecting the
unit to power mains.
While installing the unit follow
the safety regulations specific to
the use of electric tools.
Unpack the unit with care.
Do not change the power cable
length at your own discretion.
Do not bend the power cable.
Avoid damaging the power
cable.
Do not lay the power cable of
the unit in close proximity to
heating equipment.
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Do not touch the unit controls
with wet hands.
Do not carry out the installation
and maintenance operations
with wet hands.
Use the unit only for its intended
purpose.
Do not wash the unit with
water.
Protect the electric parts of the
unit against ingress of water.
Do not put any water containers
on the unit, i.e. flower vases.
Do not store any explosive or
highly flammable substances in
close proximity to the unit.
OFF
ON
Disconnect the unit from power
mains prior to any technical
maintenance.
Do not allow children to operate
the unit.
Avoid damaging the power
cable.
Do not put any foreign objects
on the power cable.
Do not sit on the unit and do
not put other objects on it.
Do not open the unit during
operation.
When the unit generates
unusual sounds, odour or emits
smoke disconnect it from
power supply and contact the
Seller.
In case of continuous operation
of the unit periodically check
the security of mounting.
Do not block the air duct when
the unit is switched on.
Do not direct the air flow
produced by the unit towards
open flame or ignition sources.
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INTRODUCTION
The user’s manual consisting of the technical details, operating instructions and technical specication applies to the installation
and mounting of the MPA…W / MPA... W LCD air supply unit (hereinafter referred to as «the unit»).
PURPOSE
The air supply unit is intended for supplying pre-heated outdoor air and cleaning it of any ammable or explosive substances,
chemically active vapours, dust, soot etc. To ensure the necessary air quality the unit must be mounted in an enclosed dry space
with ambient temperatures from +1 °С to +40°С.
The air supply unit is integrated into an air distribution system by connecting to rectangular air ducts. Alternatively it may be
connected to round ductwork by means of the appropriate duct ttings available as special accessories.
The air supply unit is a component and, therefore, may not be commissioned for standalone operation.
THE UNIT IS NOT INTENDED TO BE USED BY CHILDREN, PHYSICALLY
OR MENTALLY DISABLED PERSONS, PERSONS WITH SENSORY
DISORDER, PERSONS WITH NO APPROPRIATE QUALIFICATION.
ALL OPERATIONS WITH THE UNIT MUST BE PERFORMED ONLY BY PROPERLY
QUALIFIED PERSONNEL AFTER THE APPROPRIATE SAFETY BRIEFING.
THE UNIT INSTALLATION SITES MUST PREVENT ACCESS BY UNATTENDED
CHILDREN.
DELIVERY SET
Air supply unit 1 item
User's manual 1 item
Instruction manual for the air supply unit control system (MPA ... W LCD) 1 item
Packaging 1 item
DESIGNATION KEY
Maximum air capacity, [m3/h]
Water heater availability
W - water type
800, 1200, 1800, 2500, 3200, 3500, 5000
Unit type
MPA − single-block air supply unit
MPA X W LCD
Control unit availability
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TECHNICAL DATA
Hazardous parts access and water ingress protection:
the air supply unit utilises IP 44 compliant motors (protection against bodies 1.0 mm in diameter or larger; splash-proof);
the air supply unit installed in ducts is IP 22 compliant:
• the assembly is protected against bodies larger than 12.5 mm in diameter;
• the conductive parts are protected against accidental touch;
• water drops falling at an angle up to 15° remain harmless the equipment.
The unit design undergoes continuous improvement - therefore, some models may slightly dier from the ones described
herein.
MPA ... W LCDMPA ... W
Model Overall and mounting dimensions, [mm]
B B1 B2 B3 B4 H H1 H2 L L1 L2 K
MPA 800 W / MPA 800 W LCD 400 420 549 500 674 200 220 352 650 530 - G ¾"
MPA 1200 W / MPA 1200 W LCD 400 420 549 500 674 200 220 352 650 530 - G ¾"
MPA 1800 W / MPA 1800 W LCD 500 520 649 600 775 250 270 480 800 680 - G ¾"
MPA 2500 W / MPA 2500 W LCD 500 520 649 600 775 300 320 480 800 680 - G ¾"
MPA 3200 W / MPA 3200 W LCD 600 620 759 710 1000 300 320 530 1000 880 440 G ¾"
MPA 3500 W / MPA 3500 W LCD 600 620 759 710 1000 350 370 530 1000 880 440 G ¾"
MPA 5000 W / MPA 5000 W LCD 800 820 971 925 1212 500 520 670 1299 720 360 G 1"
Parameter
Main technical data
MPA
800 W
MPA
1200 W
MPA
1800 W
MPA
2500 W
MPA
3200 W
MPA
3500 W
MPA
5000 W
Supply voltage, V / 50 Hz 1~230 3~400Y 3~400
Number of water heating coils 4
Total unit power, [kW] 0,245 0,41 0,49 0,65 1,270 1,8
Total unit current, [A] 1,08 1,8 2,15 2,84 2,3 4,5
Max. air capacity, [m3/h] 750 1200 1870 2150 3000 3250 6500
Rotation speed, [min-1] 1650 1850 1100 1000 1200 1400
Sound pressure at 3 m, [dB(A)] 35 38 40 45 53
Maximum transported air temperature, [°С] from -40 to +45
Casing material Aluzinc
Insulation 25 mm, mineral wool
Filter G4
Connected air duct size, [mm] 400x200 500x250 500x300 600x300 600x350 800x500
Weight, [kg] 42 (45) 43 (46) 62,5 (62,5) 63 (63) 90 (101) 90 (101) 136 (136)
The weight of the MPA... W LCD series units featuring a control unit is given in parentheses while the rest of the parameters are
identical for the MPA ... W and MPA ... W LCD series.
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WATER HEATER DIAGRAMS
How to use water heater diagrams
:
Air Speed. Starting from 950 m
3
/h on the air ow scale draw a vertical line (1) till the air speed axis which makes about 3.35 m/s  .

Supply air temperature. Prolong the line
 up to the point where it crosses the outside air temperature (blue curve), e.g. -15 °C; then draw a horizontal line  from this point to the left till crossing water
in/out temperature curve (70/50 °C). From this point draw a vertical line
 .

Heating coil capacity. Prolong the line
 up to the point where it crosses the outside air temperature -15 °C (red curve) and draw a horizontal line  from this point to the right until it crosses water in/out
temperature curve (70/50 °C), from here draw a vertical line
 up to the scale representing the heating coil capacity (16.0 kW).

Water ow. Prolong the line
 down to water ow axis at the bottom of the graphic  (0.2 l/s).

Water pressure drop. Draw the line
 from the point where the line  crosses the black curve to the pressure drop axis. (2.1 kPa).
Air temperature downstream of the water heater, [°C] Coil heating capacity, [kW]
Air speed in the coil, [m/s]
Air ow in the heating coil, [m
3
/h]
Water ow in the coil, [l/s]
Water pressure drop, [kPa]
Outside air temperature, [°C]
How to use water heater diagrams:
Air Speed. Starting from 1500 m
3
/h on the air ow scale draw a vertical line  till the air speed axis which makes about 3.3 m/s.

Supply air temperature. Prolong the line
 up to the point where it crosses the outside air temperature (blue curve), e.g. -25 °C; then draw a horizontal line  from this point to the left till crossing water
in/out temperature curve (70/50 °C). From this point draw a vertical line
 to the supply air temperature axis on top of the graphic (+30 °C).

Heating coil capacity. Prolong the line
 up to the point where it crosses the outside air temperature -25 °C (red curve) and draw a horizontal line  from this point to the right until it crosses water in/out
temperature curve (70/50 °C), from here draw a vertical line
 up to the scale representing the heating coil capacity (33.0 kW).

Water ow. Prolong the line
 down to water ow axis at the bottom of the graphic  (0.42 l/s).
Water pressure drop. Draw the line
 from the point where the line  crosses the black curve to the pressure drop axis. (10.0 kPa).
MPA 800 W / MPA 800 W LCD
MPA 1200 W / MPA 1200 W LCD
MPA 1800 W / MPA 1800 W LCD
MPA 2500 W / MPA 2500 W LCD
Air temperature downstream of the water heater, [°C] Coil heating capacity, [kW]
Air speed in the coil, [m/s]
Air ow in the heating coil, [m
3
/h]
Water ow in the coil, [l/s]
Water pressure drop, [kPa]
Outside air temperature, [°C]
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How to use water heater diagrams:
Air Speed. Starting from 2400 m
3
/h on the air ow scale draw a vertical line  till the air speed axis which makes about 3.61 m/s.

Supply air temperature. Prolong the line
 up to the point where it crosses the outside air temperature (blue curve), e.g. -20 °C; then draw a horizontal line  from this point to the left till crossing water
in/out temperature curve (70/50 °C). From this point draw a vertical line
 to the supply air temperature axis on top of the graphic (+30 °C).

Heating coil capacity. Prolong the line
 up to the point where it crosses the outside air temperature -20 °C (red curve) and draw a horizontal line  from this point to the right until it crosses water in/out
temperature curve (70/50 °C), from here draw a vertical line
 up to the scale representing the heating coil capacity (50.0 kW).

Water ow. Prolong the line
 down to water ow axis at the bottom of the graphic  (0.62 l/s).

Water pressure drop. Draw the line
 from the point where the line  crosses the black curve to the pressure drop axis. (15.0 kPa).
How to use water heater diagrams:
Air Speed. Starting from 2400 m
3
/h on the air ow scale draw a vertical line  till the air speed axis which makes about 4.15 m/s.

Supply air temperature. Prolong the line
 up to the point where it crosses the outside air temperature (blue curve), e.g. -25 °C; then draw a horizontal line  from this point to the left till crossing water
in/out temperature curve (70/50 °C). From this point draw a vertical line
 to the supply air temperature axis on top of the graphic (+27 °C).

Heating coil capacity. Prolong the line
 up to the point where it crosses the outside air temperature -25 °C (red curve) and draw a horizontal line  from this point to the right until it crosses water in/out
temperature curve (70/50 °C), from here draw a vertical line
 up to the scale representing the heating coil capacity (121.0 kW).

Water ow. Prolong the line
 down to water ow axis at the bottom of the graphic  (1.52 l/s).
Water pressure drop. Draw the line
 from the point where the line  crosses the black curve to the pressure drop axis. (31.0 kPa).
MPA 3200 W / MPA 3200 W LCD
MPA 3500 W / MPA 3500 W LCD
MPA 5000 W / MPA 5000 W LCD
Air temperature downstream of the water heater, [°C] Coil heating capacity, [kW]
Air speed in the coil, [m/s]
Air ow in the heating coil, [m3/h]
Water ow in the coil, [l/s]
Water pressure drop, [kPa]
Outside air temperature, [°C]
Air temperature downstream of the water heater, [°C] Coil heating capacity, [kW]
Air speed in the coil, [m/s]
Air ow in the heating coil, [m3/h]
Water ow in the coil, [l/s]
Water pressure drop, [kPa]
Outside air temperature, [°C]
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DESIGN AND OPERATING LOGIC
MPA W / MPA W LCD are the complete air supply units which ensure ltering, pre-heating and supply of fresh outdoor air into
the serviced spaces. The units t rectangular air ducts with nominal size of 400x200, 500x250, 500x300, 600x300, 600x350 and
800x500 mm.
The steel casing has a protective aluzinc coating and a 25 mm mineral wool layer for heat and sound insulation.
The built-in G4 lter ensures high-quality purication of the supply air.
During the winter time and the o-season the supply air is pre-heated by means of a water (glycol) heater. The water heaters are
rated for maximum operating pressure of 1.0 MPa (10 bar) and maximum heat medium temperature of +95 °C.
The air supply unit features a double-inlet type centrifugal fan with forward bent blades and a built-in protection thermostat
which restarts automatically. The electric motor and impeller of the fan undergo two-plane dynamic balancing. The ball bearings
of the electric motor are completely maintenance-free with a minimum service life of 40,000 hours.
MPA ... W LCD features an automatic control system (ACS). The ACS provides comprehensive control of the air supply unit and
adjustment of the vital parameters of ventilation and air conditioning systems. The control units of MPA 800 W LCD ... 2500 W LCD
series units are housed in plastic casings while those of the MPA 3200 W LCD ... MPA 5000 W LCD series units have metal casings.
The control unit casing incorporates automatic equipment circuit board as well as control and protective elements of the power
components.
Control
unit
Heat
exchanger
Filter
Fan Pressure
switch
MPA ... W LCDMPA ... W
Control panel
Outdoor temperature
sensor
Supply air
temperature sensor
Fan
Terminal
box
Heat
exchanger
FilterTerminal
box
AUTO
ROOM
MOUNTING AND SETUP
DISCONNECT THE UNIT FROM THE POWER SUPPLY PRIOR TO ANY OPERATIONS.
THE ELECTRIC MAINS CONNECTION MUST BE PERFORMED BY A PROFESSIONAL
ELECTRICIAN. THE RATED ELECTRICAL PARAMETERS OF THE UNIT ARE STATED ON THE
MANUFACTURER’S LABEL.
THE UNIT MUST BE MOUNTED BY A QUALIFIED EXPERT ONLY, PROPERLY TRAINED AND
HAVING THE REQUIRED TOOLS AND MATERIALS.
The unit must be installed in such a way so that the direction of the arrow shown on the lid matches the direction of air flow in
the system. The unit mounting locations must enable adequate access to the removable lid for maintenance, technical service and
replacement operations.
The unit can be mounted or suspended with threaded rods. The air supply unit must be secured in such a way so as to entirely
prevent its disconnection or collapse (in consideration of the unit weight and the mating surface material) using all the available
L-shaped support brackets with vibration dampers attached to the air supply unit base.
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The air supply unit is designed to fit rectangular air ducts.
To avoid noise transfer and accidental vibrational motion the air ducts should be connected via a exible insert.
The mounting dimensions of the mated air duct must match those of the air supply unit.
To maximise the unit performance and reduce the aerodynamic losses due to air ow turbulence the unit should be preceded
and followed by straight duct sections.
Minimum recommended straight section length:
1 air duct diameter on the intake side (or at least one diagonal of the air channel section for a rectangular duct);
3 diameters on the exhaust side (or at least three diagonals of the air duct section for a rectangular duct). If the air ducts on
one or several unit pipe ttings are not available or too short the unit internals must be covered with a protective grille or
other similar device with a minimum cell size of 12.5 mm restricting access to the fan to prevent any foreign objects.
TE1 outdoor temperature sensor installation
The air supply unit is equipped with an external temperature sensor.
1. Undo the two screws securing the sensor cover.
2. Remove the sensor cover.
3. Install the sensor on the outside surface of the wall. The wall must not be subject to direct sunlight.
4. Re-install the sensor cover.
5. Connect the sensor to terminal block X1 according to the external wiring diagram.
13 24
P1 control panel installation (see ASC Instruction Manual -> control panel installation).
The return heat medium temperature sensor TE3 protects the water heating coils from freezing. The sensor is mounted inside
the return water pipeline in such a way so that to ensure its sufficient contact with the pipe surface.
The water heater freezing protection sensor TE4 is mounted on the water heater surface on the warm air exhaust outlet side
and measures the air temperature downstream of the water heating coils.
Sensor
ТЕ4
Sensor
ТЕ3
Sensor
ТЕ4
Sensor
ТЕ3
Counterow connection Direct ow connection
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