Vents AOW 25 User manual

AOW
AIR HEATING (COOLING) UNIT
USER'S MANUAL

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CONTENTS
Safety requirements..................................................................................................................................................................... 3
Purpose................................................................................................................................................................................................ 5
Delivery set........................................................................................................................................................................................ 5
Designation key.............................................................................................................................................................................. 5
Technical data.................................................................................................................................................................................. 6
Design and operating principle ........................................................................................................................................... 8
Mounting and set-up.................................................................................................................................................................. 9
Connection to power mains .................................................................................................................................................. 11
Technical maintenance.............................................................................................................................................................. 12
Troubleshooting............................................................................................................................................................................. 12
Storage and transportation regulations.......................................................................................................................... 13
Manufacturer’s warranty........................................................................................................................................................... 14
Certificate of acceptance ........................................................................................................................................................ 15
Seller information.......................................................................................................................................................................... 15
Installation certificate.................................................................................................................................................................. 15
Warranty card ................................................................................................................................................................................. 15
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 AOW 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.
The information in this user’s manual is 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.
No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means in any information
search system or translated into any language in any form without the prior written permission of the Company.

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SAFETY REQUIREMENTS
• Please read the user’s manual carefully prior to installing and operating 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.
• The warnings contained in the user’s manual must be considered most seriously since they
contain vital personal safety information.
• Failure to follow the rules and safety precautions noted in this user’s manual may result in an
injury or unit damage.
• After a careful reading of the manual, keep it for the entire service life of the unit.
• While transferring the unit control, the user’s manual must be turned over to the receiving
operator.
UNIT INSTALLATION AND OPERATION SAFETY PRECAUTIONS
• Disconnect the unit from
power mains prior to any
installation operations.
• Unpack the unit with care.
• The unit must be grounded!
• While installing the unit, follow
the safety regulations specific
to the use of electric tools.
• Do not change the power
cable length at your own
discretion.
• Do not bend the power cable.
• Avoid damaging the power
cable.
• Do not put any foreign objects
on the power cable.
• Do not lay the power cable of
the unit in close proximity to
heating equipment.
• Do not use damaged
equipment or cables when
connecting the unit to power
mains.
• 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.

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THE PRODUCT MUST BE DISPOSED SEPARATELY AT THE END OF ITS SERVICE LIFE.
DO NOT DISPOSE THE UNIT AS UNSORTED DOMESTIC WASTE.
• Do not touch the unit controls
with wet hands.
• Do not carry out the
installation and maintenance
operations with wet hands.
• Do not wash the unit with
water.
• Protect the electric parts of the
unit against ingress of water.
• Do not allow children to
operate the unit.
• Disconnect the unit from
power mains prior to any
technical maintenance.
• Do not store any explosive or
highly flammable substances
in close proximity to the unit.
• When the unit generates
unusual sounds, odour, or
emits smoke, disconnect it
from power supply and contact
the Seller.
• Do not open the unit during
operation.
• Do not direct the air flow
produced by the unit towards
open flame or ignition sources.
• Do not block the air duct when
the unit is switched on.
• In case of continuous
operation of the unit,
periodically check the security
of mounting.
• Do not sit on the unit and
avoid placing foreign objects
on it.
• Use the unit only for its
intended purpose.

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DELIVERY SET
DESIGNATION KEY
PURPOSE
THE UNIT SHOULD NOT BE OPERATED BY CHILDREN OR PERSONS WITH REDUCED
PHYSICAL, MENTAL, OR SENSORY CAPACITIES, OR THOSE WITHOUT
THE APPROPRIATE TRAINING.
THE UNIT MUST BE INSTALLED AND CONNECTED ONLY BY PROPERLY QUALIFIED
PERSONNEL AFTER THE APPROPRIATE BRIEFING.
THE CHOICE OF UNIT INSTALLATION LOCATION MUST PREVENT UNAUTHORIZED
ACCESS BY UNATTENDED CHILDREN.
The air heating (cooling) units with a water-to-air heat exchanger are designed for indoor air heating (cooling) and uniform air distribution
with a fan and louvre shutters.
An integrated high-efficient electric heater and a powerful fan enable quick air heating (cooling) in large premises or local heating
(cooling) of a working space in hangars or industrial facilities.
Designed for heating (cooling) of large premises: manufacturing sites, car repair shops, car washes, garages, car showrooms, warehouses,
shopping centers, super- and hypermarkets, shops, sport halls, conference halls, poultry and cattle farms, greenhouses and other similar
premises. The unit design enables quick and easy mounting and reduces total investment costs for heating (cooling) systems.
Name Number
AOW unit 1 pc.
User’s manual 1 pc.
Packing box 1 pc.
Drain pipe 1 pc. (AOW 25, AOW 30, AOW 45)
AOW   
Heater power [kW]
Material of the casing and component parts
_: painted metal
z: galvanized steel
Modication
_: unit model for heating and cooling
1: unit model for heating only
Unit type
Air heating (cooling) unit

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TECHNICAL DATA
The unit is designed for application with the ambient temperature ranging from +1 °C up to +50 °C.
The maximum allowable water temperature is 100 °C, the maximum pressure at 100 °C is 1.6 MPa (16 bar).
The unit is designed for operation in cold and moderate climate zones.
A double-pipe system is used to supply water to the heat exchanger.
In summer season cold water is supplied to the heat exchanger, and during the heating period - hot water.
The unit design is regularly improved, so some models may slightly differ from those ones described herein.
Parameters AOW 25, AOW1 25,
AOW1z 25
AOW 30, AOW1 30,
AOW1z 30
AOW 45, AOW1 45,
AOW1z 45
Unit supply voltage, 50 Hz [V] 230 230 230
Fan power [W] 136 191 255
Fan current [A] 0.6 0.85 1.12
RPM [min-1] 1350 1440 1360
Sound pressure level at 3 m distance [dBA] 53 55 58
Maximum heat medium temperature 100 100 100
Ingress protection rating IP44 IP44 IP44
Insulation class F B F
Air blowing range [m] 9 12 16
Technical data for heating mode:
Model
Air ow [m3/h]
Inlet air temperature
[°C]
Temperature dierence
90/70 °C
Temperature dierence
80/60 °C
Temperature dierence
70/50 °C
Temperature dierence
60/40 °C
Power [kW]
Output
temperature [°C]
Water ow [m3/h]
Water pressure
loss [kPa]
Power [kW]
Output
temperature [°C]
Water ow [m3/h]
Water pressure
loss [kPa]
Power [kW]
Output
temperature [°C]
Water ow [m3/h]
Water pressure
loss [kPa]
Power [kW]
Output
temperature [°C]
Water ow [m3/h]
Water pressure
loss [kPa]
AOW 25,
AOW1 25,
AOW1z 25
2200
-15 34.5 26.0 1.51 7.5 30.4 21.2 1.30 6.0 26.0 16.0 1.19 4.6 22.0 11.0 1.01 3.4
-10 32.0 29.0 1.40 6.6 28.3 24.3 1.22 5.3 24.0 19.2 1.12 4.0 20.0 14.0 0.90 2.8
-5 30.0 32.0 1.30 5.8 26.2 27.4 1.19 4.6 22.0 22.0 1.01 3.4 18.0 17.0 0.79 2.3
0 28.0 35.0 1.19 5.2 24.1 30.4 1.12 4.0 20.0 25.0 0.90 2.8 16.0 20.0 0.68 1.8
5 26.2 38.0 1.19 4.5 22.1 33.3 1.01 3.3 18.0 28.0 0.79 2.3 14.0 22.0 0.61 1.4
10 24.2 41.4 1.12 3.9 20.1 36.1 0.94 2.8 15.9 30.6 0.68 1.9 12.0 25.0 0.50 1.0
15 22.1 44.2 1.01 3.3 18.1 38.8 0.90 2.3 13.8 33.0 0.61 1.4 9.0 27.0 0.40 0.7
AOW 30,
AOW1 30,
AOW1z 30
3000
-15 48.4 27.2 2.09 7.4 42.0 22.0 1.91 6.0 36.6 17.0 1.58 4.7 31.0 11.7 1.30 3.5
-10 45.4 30.3 2.02 6.6 39.0 25.2 1.69 5.3 33.7 20.0 1.51 4.0 27.6 14.6 1.19 2.9
-5 42.4 33.4 1.91 5.9 36.7 28.2 1.58 4.6 30.0 22.9 1.40 3.4 24.0 17.4 1.12 2.4
0 39.5 36.4 1.69 5.2 33.8 31.1 1.51 3.9 28.0 25.7 1.19 2.9 21.0 20.0 1.01 1.9
5 36.7 39.4 1.58 4.5 30.9 34.0 1.40 3.4 25.0 28.5 1.12 2.4 19.0 22.7 0.79 1.5
10 33.8 42.1 1.51 3.9 28.1 36.7 1.19 2.8 22.0 31.1 1.01 1.9 16.0 25.2 0.68 1.1
15 31.0 44.9 1.40 3.3 25.3 40.0 1.12 2.3 19.4 33.7 0.90 1.5 13.0 27.5 0.61 0.7
AOW 45,
AOW1 45,
AOW1z 45
3850
-15 63.0 28.4 2.81 11.9 55.6 23.3 2.41 9.7 48.1 18.1 2.09 7.6 40.4 12.8 1.80 5.7
-10 59.2 31.5 2.59 10.6 51.8 26.4 2.30 8.5 44.3 21.1 1.91 6.6 36.7 15.7 1.58 4.8
-5 55.4 34.6 2.41 9.4 48.0 29.3 2.09 7.4 40.6 23.9 1.80 5.6 32.9 18.5 1.40 3.9
0 51.6 37.5 2.30 8.3 44.3 32.2 2.02 6.4 36.9 26.8 1.58 4.7 29.2 21.3 1.30 3.2
5 47.9 40.4 2.09 7.3 40.6 35.0 1.80 5.5 33.2 29.5 1.51 3.9 25.6 23.9 1.12 2.5
10 44.3 43.2 2.02 6.3 37.0 37.8 1.58 4.6 29.6 32.2 1.30 3.2 21.9 26.4 1.01 1.9
15 40.6 45.9 1.80 5.4 33.4 40.4 1.51 3.8 26.0 34.8 1.12 2.5 18.1 28.8 0.79 1.3

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Technical data for cooling mode:
Model Air ow [m3/h]
Intake air
temperature
[°]
Temperature dierence 90/70 °C
Power [kW] Output temperature
[°C] Water ow [m3/h] Water pressure loss
[kPa]
AOW 25 2200
35 9.1 26.0 1.6 7.5
30 5.8 22.5 1.0 6.1
25 3.2 21.0 0.6 2.1
20 2.0 18.0 0.3 0.9
AOW 30 3000
35 11.4 27.0 2.0 11.2
30 7.3 22.9 1.3 5.0
25 3.9 21.1 0.7 1.6
20 2.4 17.7 0.4 0.7
AOW 45 3850
35 18.0 24.9 3.1 31.8
30 10.8 21.7 1.9 12.9
25 7.3 19.0 1.3 6.3
20 3.2 17.4 0.5 1.4
Note:The AOW1 and AOW1z unit models are not designed for cooling as they are not equipped with elements necessary for condensate
removal.
1 – heat exchanger
2 – axial fan with a protecting grille
3 – casing
4 - louvre shutters
5 – terminal box
6 – heat exchanger spigots
AOW
H
4
1
B
5
2
L 1
L
36
К
43
H1
B1
Overall dimensions:
Model Dimensions [mm] Number of pipe rows Weight
[kg]
BB1 HH1 LL1 K
AOW 25 680 785 605 468 360 286 G 3/4" 2 37.0
AOW 30 680 785 655 518 360 286 G 3/4" 2 40.0
AOW 45 780 885 710 570 380 300 G 3/4" 2 50.0

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AOW 1
2
L1
L
36
К
H1
B1
5
H
4 1
B
Overall dimensions:
Model Dimensions [mm] Number of pipe rows Weight
[kg]
BB1 HH1 LL1 K
AOW1 25, AOW1z 25 630 690 555 468 320 262 G 3/4" 2 28.0
AOW1 30, AOW1z 30 630 690 605 518 355 262 G 3/4" 2 31.0
AOW1 45, AOW1z 45 730 790 655 570 380 285 G 3/4" 2 41.0
DESIGN AND OPERATING PRINCIPLE
The AOW unit consists of four basic components: a water-to-air heat exchanger (1), an axial fan with a protecting grille (2), a polymer
coated steel casing (3), louvre shutters (4).
The water-to-air heat exchanger is made of copper tubing ribbed with aluminium.
The water-to-air heat exchanger is equipped with internally threaded (3/4) copper tubes.
The axial fan located at the unit inlet generates air flow in the water-to-air heat exchanger.
The protecting grille of the fan prevents ingress of foreign objects inside the unit.
The adjustable louvre shutters are located at the unit outlet. Each louvre vane is manually adjustable which makes it easy to create a
required air stream direction. The curved profile of the louvre vanes prevents air flow turbulence and its rising toward upper part of the
room thus keeping warm air within the heated area. The unit operation is based on heat/cool conduction from the hot or cold water to
surface of the copper tubes filled with circulating water. The copper tubes have aluminium fins for extra large heat exchange surface.
The copper tubes transfer heat energy to the aluminium fins and the fins transfer it further to the air flow generated by the fan.
The heated (cooled) air flow is supplied to the premises and directed locally by means of the louvre shutters.
• The AOW model is a single-room air heating/cooling system and the AOW1 model is a single-room air heating system.
• The unit is suitable both for vertical and horizontal installation.
• During unit operation in the cooling mode some condensate may form on the heat exchanging surface and get accumulated in the
unit drain pan.
The AOW 25, AOW 30 and AOW 45 units must be equipped with a drain pipe. Fix the drain pipe to the unit bottom with rivets.
The drain pipe and the rivets are supplied with the unit.
Apply some sealant on the mating surfaces of the pipe and
drain pan mating surfaces. Fix the pipe with fasteners.
The drain pipe opening is
plugged. Remove the plug.
The unit is designed for indoor installation in compliance with applicable hygienic norms and standards.

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MOUNTING AND SETUP
READ THE USER'S MANUAL BEFORE INSTALLING THE UNIT.
FAILURE TO PROVIDE MINIMUM DISTANCE TO WALLS OR CEILING WILL IMPAIR THE
UNIT AERODYNAMIC AND THERMAL CHARACTERISTICS AS WELL AS SERVICE LIFE OF
THE UNIT.
Provide free air access to the fan intake vent while installing the unit.
The minimum distance between the wall or ceiling and the AOW unit is 300 mm.
While mounting the unit provide enough access for maintenance or repair work.
The unit is designed for mounting on walls or any other vertical surface as well for ceiling mounting using the fixing brackets.
While connecting the water-to-air heat exchanger to the water mains, disable any loads that can damage the unit or tight connections.
Layout of the heat medium piping must ensure quick detachment for easy servicing and repair operations.
Install a mud filter at the heat medium inlet to the heat exchanger.
Mounting accessories:
Model Mounting angles Bracket Multi-angle bracket
AOW 25 MKP-AOW MK-AOW 25 MKU-AOW 25
AOW 30 MKP-AOW MK-AOW 30 MKU-AOW 30
AOW 45 MKP-AOW MK-AOW 45 MKU-AOW 45
AOW1 25, AOW1z 25 MKP-AOW MK-AOW1 25 MKU-AOW1 25
AOW1 30, AOW1z 30 MKP-AOW MK-AOW 25* MKU-AOW 25
AOW1 45, AOW1z 45 MKP-AOW MK-AOW 30* MKU-AOW 30
*The cross pieces between the MK-AOW mounting brackets are not applicable in case of mounting to the AOW1 and AOW1z units.
INSTALLATION OF THE UNIT WITH AN MKAOW MOUNTING SET
The MK-AOW mounting bracket is used for ceiling or wall mounting of the unit. Not included in the delivery set, available as a special
accessory.
CEILING MOUNTING WITH MK-AOW
min 300 mm
min 300 mm
WALL MOUNTING WITH MK-AOW
AOW AOW1, AOW1z

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INSTALLATION OF THE UNIT WITH AN MKPAOW MOUNTING SET
The MKP-AOW mounting set (not included in the delivery set) is used for ceiling mounting of the unit by means of the mounting studs
or chains.
INSTALLATION OF THE UNIT WITH MKP-AOW
min 300 mm
Mounting stud
INSTALLATION OF THE UNIT WITH AN MKUAOW MULTIANGLE BRACKET
The MKU-AOW mounting multi-angle bracket (not included in the delivery set) is used for ceiling or wall mounting of the unit.
The MKU-AOW bracket design enables wall or ceiling installation of the unit at the angle of 30° and 45°.
RIGHT ANGLE MOUNTING WITH MKU-
AOW
30° MOUNTING WITH MKU-AOW 45° MOUNTING WITH MKU-AOW
30°
45°
UNIT REACH DISTANCE
Failure to provide the minimum distance of 0.3 mm to walls or ceiling will impair the unit aerodynamic and thermal characteristics as
well as service life of the unit.
Wall mounting
Minimum distance to the wall is 0.3 m.
Mounting height is from 3 to 8 m.
Maximum air blowing range is 16 m.
Ceiling mounting
Minimum distance to the ceiling is 0.3 m.
Mounting height is from 4 to 14 m.
16 m
3-8 m
4-14 m
16 m