Salda AKU Series Guide

AKU/AKU EKO
EN MOUNTING AND INSTALLATION INSTRUCTION

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SYMBOLS AND MARKING
Product name
Nominal voltage frequency
Max.current
Max.power consumption
Protection class
/ 000 0VAC
00.00 A
0.00 kW
IP 00
/0 /Hz
Made in Šiauliai, Lithuania
SKU000000
LN: LN000000 2019.01.01
1
4
5
2
6
3
Figure 1.1 - Technical label
1 - Logo; 2 - Product code (SKU); 3 - Product name; 4 - Technical data; 5 - Production place; 6 - Lot number and production date.
Figure 1.2 - Indication for air ow direction.
GENERAL INFORMATION
Before installing the unit read the entire information provided in this document.
Installation of the unit shall only be performed by trained and qualied personnel aware of installation of such type of units, inspection, mainte-
nance and tools required for installation works.
If the provided information is unclear or any doubts arise regarding safe installation and operation, please contact the manufacturer or his repre-
sentative.
The unit shall be operated only under the below listed conditions.
It is strictly forbidden to use the unit for non-designed purposes or in contradiction to the specied working conditions without written permission
of manufacturer or his representative.
The manufacturer or his representative shall be notied about any fault, including description of the fault and data specied on the manufacturer’s
label.
Any repair or dismantle of the unit in case of fault is forbidden without previous written permission of manufacturer or his representative.
Dismantling, repair or modication of the unit shall be performed only upon previous written consent from manufacturer or his representative.
Original purchaser should be certain of suitability of the unit for operating in selected conditions before placing order and mounting the unit.
TRANSPORTATION AND STORAGE
All units are packed in the factory to withstand regular conditions of transportation.
Upon unpacking, check the unit for any damages caused during transportation. It is forbidden to install damaged units!!!
The package is only a protection measure!
At unloading and storing the units, use suitable lifting equipment to avoid damages and injuries. Do not lift units by holding on power supply ca-
bles, connection boxes, air intake or discharge anges. Avoid hits and shock overloads. Before installation units shall be stored in a dry room with
the relative air humidity not exceeding 70% (at +20°) and with the average ambient temperature ranging between +5°C and +30°C. The place of
storage shall be protected against dirt and water.
The units shall be stored and transported only with connection anges in a horizontal position.
The storage is not recommended for a period longer than one year. In case of storage longer than one year, it is necessary to check free rotation
of bearings before installation (turn the impeller by hand).
PURPOSE OF THE DEVICE
The unit is designed for the use in the ventilation and air conditioning systems to supply/extract from a room the clean air only (free of chemical
compounds causing metal corrosion, of substances aggressive to zinc, plastic and rubber, and of particles of solid, adhesive and bre materials).
DESCRIPTION
Rotation speed of fan motors in controlled using external 0..10VDC or 10VDC PWM signal.
Maintenance-free bearings.
Integrated thermal protection of motor.
Thickness of acoustic and thermal insulation of walls – 50mm.
Fans with Tacho Out output can be connected to the external revolution counter (1 revolution per pulse), controller, alarm circuit or speed indica-
tors. Maximum output current: 3mA.
OPERATING CONDITIONS
Units are forbidden to be used in potentially explosive environment.
Unit is designed to supply/extract only clean air from a room (free of chemical compounds causing metal corrosion, of substances aggressive to
zinc, plastic and rubber, and of particles of solid, adhesive and bred materials).
Unit shall be operated indoors only.
Maximum permissible ambient air temperature shall be considered.
Minimum permissible ambient air temperature: -20 °C.

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SAFETY MEASURES
Do not use this unit for purposes other than those provided in its design.
Do not dismantle and modify the unit. Such actions can cause mechanical fault or even injury.
Use special working clothes when installing and maintaining the unit. Be careful – angles and edges of the unit and its components can be sharp
and cause injuries.
Being near the unit, do not wear free streaming clothes that could be sucked into the operating fan.
All products packed in the factory are not prepared for eventual operation.
The units can be used only by connecting them to air ducts or by installing protection grilles in air intake and exhaust openings.
Do not put ngers or any other objects into protection grilles of air intake and exhaust or into connected air duct. In case any foreign body get into
the unit, disconnect the power supply source immediately. Before removal of foreign body, make sure that any mechanical movement in the unit
has stopped. In addition, make sure that the accidental switching-on of the unit is impossible.
Avoid direct contact with the ow of supplied and extracted air.
Do not connect the unit to the mains other than indicated in the manufacturer’s label on the casing of the unit.
Never use a damaged power supply cable.
Never touch with wet hands the power supply cables connected to the mains.
Never dip extension cords and plugs in water.
Do not install and use the unit on uneven surfaces or other unstable planes.
Never use this unit in the environment conducive to explosion and containing any aggressive materials.
INSTALLATION
MECHANICAL CONNECTION
Installation works shall be performed only by trained and qualied personnel.
Unit shall be installed rmly and tightly to ensure safe operation.
Before connecting to the air duct system, the connection openings of ventilation system air ducts shall be closed.
Protection against contact with the impeller of the operating fan shall be ensured (special accessories are used for this reason or an appropriate
length of air duct is selected).
Do not connect the elbows near the connection anges of the unit. The minimum distance of the straight air duct between the unit and the rst
branch of the air duct in the suction air duct must be 1xD, in air exhaust duct 3xD, where D is diameter of the air duct.
When connecting air ducts, consider the direction of air ow indicated on the casing of the unit.
It is recommended to use the accessories – clamps (Fig. 1) for connection of the fan into the air duct system. This will reduce vibration transmitted
by the unit to the air duct system and environment.
Installation shall be performed in such manner that the weight of the air duct system and its components would not overload the ventilation unit.
It is recommended to use air lters reducing accumulation of dirt on the fan impeller. The accumulated dirt misbalances the impeller and causes
vibrations. It may be the reason of fault of the motor of the fan.
If the installed fan is near the wall, it may transmit noise vibrations to the premises even though the level of noise caused by the fan is admissible.
The installation is recommended at the distance of 400mm from the nearest wall. If it is not possible, the installation of the unit is recommended
on the wall of the room where the level of noise is not important.
In addition, vibrations may also be transmitted through the oor and ceiling. If possible, the oor and ceiling shall be additionally insulated in order
to suppress the noise.
If there is a possibility for condensate or water to access the unit, external protective measures shall be tted.
Fan can be installed on the oor, wall or ceiling as shown in Fig. 2. 4 fastening screws are supplied for this purpose (Fig. 3).
Inappropriate way of fan installation is shown in Fig. 4.
IMPORTANT. The fan shall be installed only in such a way that the entire surface of the fan fully adhere to the surface of installation (Fig. 5).
During installation enough space shall be retained for opening of the fan maintenance door. (Fig. 6).
If there is not enough space, the maintenance door may be removed as it is shown in Fig. 7 a; b.
If necessary, the option to change the opening side of the fan maintenance doors is provided (Fig. 7).
1.
2.

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3. 4. 5.
6. 7a. 7b.
7c. 7d. 7e.
ELECTRIC INSTALLATION
Units contain rotating parts and are connected to the mains. It may cause risk to people health and life. Therefore, it is obligatory to follow safety
requirements when performing installation works. In case of any doubts regarding safe installation and operation of the unit, please contact the
manufacturer or his representative.
Installation works shall be performed only by trained and qualied personnel.
Make sure that specications of the connected mains correspond to the specications indicated in the manufacturer label on casing of the unit.
Selected power supply cable shall match the power of the unit.
Fan shall be connected according to its wiring diagram indicated in this document and as it is shown under the cover of power supply connection
box (Fig. 8).
The external protective mechanism (automatic switch or cut-out) shall be connected, the activation current of which shall be 1.5 times higher than
the maximum current of the unit (indicated in product’s label).
The unit must be adequately grounded.
If the speed controller of the fan motor is used, make sure it provides safe operation of the motor.
The minimum speed of motor shall be ensured at which the back draft shutters open (if installed).

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WIRING DIAGRAM
#1 #2 #3
PE BU BN BK YE WH RD
yellow – green blue brown black yellow white red
#4 #5
PE U2TB (#4)/ Z(#5) Z2
yellow – green blue brown black
#6 #7
PE U1U2Z1Z2TK
yellow – green brown blue black orange white
START-UP
Operation start-up of the unit shall be performed only by trained and qualied personnel.
Before start-up, make sure that power supply circuit corresponds to the specication indicated in the label.
Before start-up, make sure that the unit is connected to the mains in accordance with the wiring diagram shown in this document and under the
cover of power supply connection box.
Before start-up of the fan, make sure that the above instructions of safety and installation are applied.
Upon start-up of the unit, make sure that the motor rotates evenly, without vibration and outside noise.
Upon start-up of the unit, make sure that the air ow generated by the unit matches the direction(s) of air indicated on the casing.
The current of the motor shall be tested for compliance with the maximum allowed current (indicated in manufacturer label).
Check of the motor overheat is obligatory.
Too frequent turn on or turn-o󰀨 of the fan is not allowed to avoid overheat of the motor windings or damage of the insulation.
MAINTENANCE
Bearings of the fan are maintenance-free.

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If there is no air lter in front of the fan, the only fan maintenance required is cleaning of the impeller. It is recommended to clean the impeller at
least once every six months.
Before cleaning it is necessary to turn-o󰀨 power supply voltage and to block the switch in order to avoid accidental switching-on during mainte-
nance.
It is necessary to wait until any mechanical movement stops, motor cools down.
Make sure that the fan, its components, as well as accessories tted to it, are tightly and rmly installed.
Impeller shall be cleaned carefully in order not to a󰀨ect its balance.
It is strictly forbidden to clean the impeller with mechanical scours, chemical substances, detergents, compressed air stream and any liquids.
Any liquids of any kind are not allowed for washing of the fan.
After maintenance and installation of the unit back to the air duct system, the same actions shall be performed as indicated in clauses Installation
and Start-up, and any other requirements followed as provided in this document.
IMPROPER OPERATION AND REPAIR
Fault removal works shall be performed only by trained and qualied personnel.
The following actions shall be taken when the unit switches-o󰀨:
check if voltage and current of the mains correspond to the requirements indicated in manufacturer label;
check for power loss/availability to the unit;
upon elimination of power supply faults, switch-on the unit again.
If the motor does not turn on repeatedly:
disconnect power supply;
wait for the stop of all mechanical movement, cooling down of the motor;
make sure that the impeller is not blocked;
switch on the unit again.
If the fault can not be removed, please contact the supplier.
DIMENSIONS AND WEIGHT
AKU
B W H H1 M N øD E S F G m
[mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [kg]
125 D 400 410 300 332 133 171,5 125 440 330 330 42 13,5
125 M 400 410 300 332 133 171,5 125 440 330 330 42 11,9
160 D 400 410 300 332 261,5 141 160 440 330 330 42 14
160 M 400 410 300 332 261,5 141 160 440 330 330 42 13,6
200 D 400 410 300 332 258 135 200 440 330 28 42 13,7
200 M 444 444 420 366 222 222 250 484 364 38 42 17,0
250 D 694 694 500 616 218 304 250 734 614 38 42 39,0
250 M 444 444 420 366 222 222 250 484 364 38 42 18,0
250 S 694 694 500 616 228 304 250 734 614 38 42 37,0
315 D 768 768 570 690 238 320 315 808 688 38 60 63,0
315 M 694 694 500 616 238 268 315 734 614 38 60 47,0
400 D 768 768 570 690 252 305 400 808 688 68 60 63,0
400 S 705 768 685 690 384 309 400 745 688 68 60 70,0
125 EKO 400 410 325 205 165,5 125 440 330 12,3
160 EKO 550 485 340 149 193 160 590 405 19,0
200 EKO 600 545 425 170 259,5 200 640 465 25,0
250 EKO 600 545 425 194 234,5 250 640 465 25,0
315 EKO 437 595 475 297,5 238 315 477 515 31,0

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TECHNICAL DATA
AKU EKO 125 160 200 250 315
- phase/voltage [50 Hz/VAC] ~1, 230 ~1, 230 ~1, 230 ~1, 230 ~1, 230
- power [kW] 0,055 0,114 0,195 0,213 0,448
- current [A] 0,46 0,99 1,45 1,69 2,8
- speed [min-1]4480 3490 3380 3220 3580
- max. ambient tempera-
ture [Co]60 60 60 60 60
- motor protection class IP-44 IP-44 IP-44 IP-44 IP-54
- wiring diagram #1 #1 #3 #1 #2
AKU 125 D 125 M 160 D 160 M 200 D 200 M
- phase/voltage [50 Hz/VAC] ~1, 230 ~1, 230 ~1, 230 ~1, 230 ~1, 230 ~1, 230
- power [kW] 0,12 0,075 0,278 0,135 0,278 0,167
- current [A] 0,53 0,33 1,2 0,59 1,2 0,72
- speed [min-1]2480 2335 2647 2480 2647 1550
- capacitor [µF] 4 2 5454
- max. ambient temperature [Co]+65 +55 +50 +65 +50 +65
- motor protection class IP-44 IP-44 IP-44 IP-44 IP-44 IP-44
- wiring diagram #4 #5 #5 #4 #5 #4
AKU 250 D 250 M 250 S 315 D 315 M 400 D 400S
- phase/voltage [50 Hz/VAC] ~1, 230 ~1, 230 ~1, 230 ~1, 230 ~1, 230 ~1, 230 ~1, 230
- power [kW] 0,545 0,265 0,31 1,505 0,95 1,72 1,474
- current [A] 2,56 1,15 1,35 6,61 4,79 7,63 6,49
- speed [min-1]1190 2082 2665 1290 1210 1290 1500
- capacitor [µF] 10 5 10 35 16 35 25
- max. ambient temperature [Co]+40 +40 +60 +40 +40 +40 +40
- motor protection class IP-54 IP-44 IP-44 IP-54 IP-54 IP-54 IP-54
- wiring diagram #6 #5 #5 #6 #6 #6 #7

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ECODESIGN DATA TABLE
AKU 125 D 125 M 160 D 160 M 200 D 200 M
Specic energy consumption (SEC) cold [ kWh/m2a ] -51,8 -51,2 -50,2 -51,6 -52 -52
Specic energy consumption (SEC) average [ kWh/m2a ] -24,7 -24,1 -23,2 -24,6 -24,9 +24,9
Specic energy consumption (SEC) warm [ kWh/m2a ] -9,2 -8,6 -7,7 -9,1 -9,4 -9,4
Declared typology Unidirec-
tional
Unidirec-
tional
Unidirec-
tional
Unidirec-
tional
Unidirec-
tional
Unidirec-
tional
Type of drive installed (fan) Variable Variable Variable Variable Variable Variable
Type of heat recovery system N/A N/A N/A N/A N/A N/A
Thermal e󰀩ciency of heat recovery [ % ] N/A N/A N/A N/A N/A N/A
Maximum ow rate [ m3/h ] 360 195 530 407 596 596
Electric power input of the fan drive at maxi-
mum ow rate
[ W ] 115 73 203 135 152 152
Sound power level (Lwa) [ dB(A) ] 49 47 55 52 56 56
Reference ow [ m3/s ] 0,07 0,04 0,1 0,08 0,12 0,12
Reference pressure di󰀨erence [ Pa ] 50 50 50 50 50 50
SPI [ W/(m3/h) ] 0,22 0,26 0,31 0,23 0,21 0,21
Control factor and control typology 0,65 0,65 0,65 0,65 0,65 0,65
Declared maximum internal leakage rates [ % ] N/A N/A N/A N/A N/A N/A
Declared maximum external leakage rates [ % ] <1 <1 <1 <1 <1 <1
Possition and description of visual lter warn-
ing for RVU’s
N/A N/A N/A N/A N/A N/A
AEC average [ kWh ] 145 167 205 150 135 135
AEC cold [ kWh ] 145 167 205 150 135 135
AEC warm [ kWh ] 145 167 205 150 135 135
AHS Average [ kWh/a ] 2830 2830 2830 2830 2830 2830
AHS Cold [ kWh/a ] 5536 5536 5536 5536 5536 5536
AHS Warm [ kWh/a ] 1280 1280 1280 1280 1280 1280
ErP Compliance 2018 2018 2018 2018 2018 2018
Internet address for disassembly instructions www.salda.lt
AKU EKO 125 160 200 250 315
Declared typology Unidirectional Unidirectional Unidirectional Unidirectional Unidirectional
Type of drive Variable Variable Variable Variable Variable
Type of HRS N/A N/A N/A N/A N/A
Nominal NRVU ow rate [ m3/s ] 0,05 0,12 0,21 0,22 0,33
E󰀨ective electric power input [ kW ] 0,05 0,09 0,17 0,22 0,4
SFPint [ W/(m3/s) ] N/A N/A N/A N/A N/A
Face velocity [ m/s ] 00000
Normal external pressure [ Pa ] 340 259 321 380 541
Internal pressure drop of ventilation compo-
nents
[ Pa ] N/A N/A N/A N/A N/A
Static e󰀩ciency of fans used in accordance
with Regulation No 327/2011
[ % ] 31,7 35,9 38,8 37,4 44,6
Declared maximum external leakage [ % ] <1 <1 <1 <1 <1
Casing sound power level (Lwa) [ dB(A) ] 60 56 60 63 67
ErP Compliance 2018 2018 2018 2018 2018
Internet address for disassembly instructions www.salda.lt

EN | 9AKU_AKU EKO v2019.04
DECLARATION OF CONFOMITY
Manufacturer
SALDA, UAB
Ragainės g. 100
LT-78109 Šiauliai, Lithuania
Tel.: [phone]
www.salda.lt
Hereby conrms that the following products - Air handling units:
AKU, AKU EKO*
(where by “*” indicates possible unit installation type and modication)
Provided it was delivered and installed in the facility in accordance with the included installation instructions, comply with all applicable require-
ments in the following directives:
Machinery Directive 2006/42/EC
Low Voltage Directive 2006/95/EC
EMC Directive 2014/30/EU
The following regulations are applied in applicable parts:
Ecodesign requirements for ventilation units Nr. 1253/2014;
Energy labeling of residential units Nr. 1254/2014.
The following harmonized standards are applied in applicable parts:
LST EN ISO 12100 - Safety of machinery - General principles for design - Risk assessment and risk reduction.
LST EN 60204-1 - Safety of machinery - Electrical equipment of machines - Part 1: General requirements.
LST EN 60335-1 - Household and similar electrical appliances. Safety. Part 1: General requirements.
LST EN 60529 - Degrees of protection provided by enclosures (IP code).
LST EN 60034-5 - Rotating electrical machines. Part 5: Degrees of protection provided by the integral design of rotating electrical machines (IP
code)
LST EN 61000-6-2 - Electromagnetic compatibility (EMC) -- Part 6-2: Generic standards - Immunity for industrial environments.
LST EN 61000-6-3 - Electromagnetic compatibility (EMC) -- Part 6-3: Generic standards - Emission standard for residential, commercial and
light-industrial environments.
Should any alterations be made in the products, this declaration will no longer apply.
Notied body: VšĮ Technikos priežiūros tarnyba, Naugarduko g. 41, LT – 03227 Vilnius, Lithuania, identication number 1399.
Quality: Salda UAB activities are in line with the international quality management system standard ISO 9001:2015.
Date 2019-02-01
Giedrius Taujenis
Director product development

10 | EN AKU_AKU EKO v2019.04
WARRANTY
1. All equipment manufactured in our factory is checked in operating conditions and tested befor delivery. Test protocol is supplied together with
the unit. The equipment is shipped in good working order and condition to the direct client. The unit is warrantied for the period of two years from
the invoice date.
2. If equipment is found to have been damaged during transportation, a claim should be made against carrier, as we assume no responsibility for
such damage.
3. This warranty does not apply:
3.1. when transportation, storage, installation and maintenance instructions of the unit are violated;
3.2. when the equipment is improperly maintained, mounted - inadequate maintenance;
3.3. when the equipment without our knowledge and permission has been upgraded or unskilled repairs were made;
3.4. when the unit was used not for its original purpose.
3.5. Company SALDA UAB is not responsible for potential loss of property or personal injury in cases where AHU is manufactured without a con-
trol system and the control system will be installed by the client or third parties. The manufacturer’s warranty does not cover devices that will be
damaged by installing the control system.
4. This warranty does not apply at these malfunction cases:
4.1. mechanical damage;
4.2. damage caused by entering outside objects, materials, liquids;
4.3. damage caused by natural disaster, accident (voltage change in the electricity network, lightning, etc..).
5. The company assumes no liability for its products either directly or indirectly damage, if the damage is caused by failure to comply with instal-
lation and mounting regulations, deliberate or careless users or third-party behavior.
These conditions are readily discernable when the equipment is returned to our factory for inspection.
If the direct client determines that equipment is found to be faulty, or a breakdown occurred, he should inform the manufacturer within ve working
days and deliver the equipment to manufacturer. Delivery costs should be covered by customer.
Manufacturer reserves the right to change this technical passport any time without prior notice, if some typographic
errors or inaccurate information is found, as well as after improving the apps and/or the devices. Such changes will be
included in the new issues of the technical passport. All illustrations are just for information and thus may di󰀨er from the
original device.
LIMITED WARRANTY COUPON
Warranty term
24 months*
I received complete package and technical manual of the product ready for usage. I have read warranty terms and conditions and agree with them:
..........................................................................................................................................................................
Customer’s signature
*refer to WARRANTY CONDITIONS
Dear User, we appreciate your choice and do hereby guarantee that all ventilation equipment manufactured by our Company is inspected and
thoroughly tested. An operational and high-quality product is sold to the direct buyer and shipped from the territory of the factory. It is provided with
a 24-month warranty since invoice issue date.
Your opinion is important to us, thus we always look forward to hearing your comments, feedback, or suggestions regarding technical and opera-
tional characteristics of the Products.
In order to avoid any misunderstandings, please read the instructions for installation and operation of the product as well as other technical docu-
ments of the product carefully. The number of the Limited Warranty Coupon and serial number of the product specied on the silver identication
sticker attached to the housing must match.
The Limited Warranty Coupon shall be valid provided that the seller’s stamps and records are clear. It is prohibited to change, delete, or rewrite
the data specied on it in any manner – such a coupon shall be invalid.
With this Limited Warranty Coupon the manufacturer conrms one’s obligations to implement the imperative requirements established by eective
laws on protection of consumer rights in the event of identication of any defects of the products.
The manufacturer reserves the right to refuse provision of free warranty servicing in cases when the warranty conditions listed below are disre-
garded.