System air AXC User manual

Document in original language | · 008
Axial fans/Jet fans
AXC, AXCBF, AXR, AXS, AJR, AJ8
Installation and Operating Instructions GB

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© Copyright Systemair AB
All rights reserved
E&OE
Systemair AB reserves the rights to alter their products without notice.
This also applies to products already ordered, as long as it does not affect the previously agreed specifications.

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Contents
1 General information.........................................1
1.1 Warning symbols ...................................1
1.1.1 Instruction symbols.....................1
2 Important safety information .............................1
2.1 Personnel .............................................2
2.2 Personal protective equipment..................2
2.3 5 rules of electrical safety ........................2
3 Warranty.......................................................2
4 Delivery, transport, storage ...............................2
4.1 Delivery ...............................................3
4.2 Transport..............................................3
4.3 Storage................................................3
5 Description ....................................................4
5.1 General................................................4
5.1.1 Fan and motor data ....................4
5.1.2 Temperature types .....................4
5.1.3 Air gap between housing and
impeller ...................................5
5.2 Description axial fans (AXC, AXR,
AXS)....................................................5
5.2.1 Construction..............................6
5.2.2 Types & variants ........................6
5.2.3 Accessories...............................7
5.3 Description Jet fans.................................8
5.3.1 Description AJR/AJ8 ....................8
5.4 Description AXCBF ..................................9
5.4.1 Construction............................ 10
5.5 Intended use ...................................... 11
6 Name plate and type key ................................ 12
7 Installation................................................... 13
7.1 Vibration dampers ................................ 14
7.2 Installation positions ............................. 15
7.2.1 Installation of the ventilation
system .................................. 16
7.2.2 Installation of flexible
connections ............................ 17
7.2.3 Installation silencer................... 18
7.2.4 (K), (B), (F)— fans — special
points .................................... 18
7.2.5 Air gap................................... 18
7.3 Installation jet fans ............................... 18
7.3.1 Deflector ................................ 19
8 Electrical connection ...................................... 19
8.1 Protecting the motor............................. 19
8.2 Connection ......................................... 20
8.2.1 Terminal box .......................... 20
8.2.2 Wiring diagram ........................ 21
8.3 Frequency converter (if used) ................. 21
9 Commissioning ............................................. 22
9.1 Tests.................................................22
9.2 Commissioning of speed-controlled
fans ..................................................22
9.3 Adjusting the blade angle....................... 22
10 Operation....................................................22
11 Troubleshooting/maintenance/repair ................ 23
11.1 Troubleshooting................................... 23
11.2 Maintenance....................................... 24
11.3 Variable-speed fans.............................. 25
11.4 Overhaul/further maintenance ................ 25
11.5 Spare parts ......................................... 26
12 Cleaning......................................................26
13 Deinstallation/dismantling............................... 26
14 Disposal......................................................26
15 Commissioning Report.................................... 27

General information | 1
1 General information
1.1 Warning symbols
Danger
Direct hazard
Failure to comply with this warning will lead
directly to death or to serious injury.
Caution
Hazard with a low risk
Failure to comply with this warning may lead to
moderate injuries.
Warning
Potential hazard
Failure to comply with this warning may lead to
death or serious injury.
Important
Hazard with risk of damage to objects
Failure to comply with this warning will lead to
damage to objects.
Note:
Useful information and instructions
1.1.1 Instruction symbols
Instruction Instruction with xed sequence
♦Carry out this action 1. Carry out this action 3. (if applicable, further actions)
♦(if applicable, further actions) 2. Carry out this action
2 Important safety information
Planners, plant builders and operators are responsible for the proper assembly and intended use.
♦Read the operating instructions completely and carefully.
♦Keep the operating instructions and other valid documents, such as the circuit diagram or motor instructions, with
the fan. They must always be available at the place of use.
♦Observe and respect local conditions, regulations and laws.
♦Abide by the system-related conditions and requirements of the system manufacturer or plant constructor.
♦Safety elements may not be dismantled, circumvented or deactivated.
♦Only use the fan in operational condition, if in doubt contact Systemair.
♦Provide generally prescribed electrical and mechanical protective devices.
♦During installation, electrical connection, commissioning, troubleshooting, and maintenance, secure the location and
premises against unauthorised access.
♦Do not circumvent any safety components or put them out of action.
♦Keep all the warning signs on the fan complete and in a legible condition.
♦The device is not to be used 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.
♦Do not allow children to play with the device.
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2|Warranty
2.1 Personnel
The fan may only be used by qualified, instructed and trained personnel. The persons must know the relevant safety di-
rectives in order to recognise and to avoid risks. The individual activities and qualifications can be found in Table 1 Qual-
ifications, page 2.
Table 1 Qualifications
Activities Qualifications
Storage, operation, transport, cleaning, disposal Trained personnel (see following note)
Electrical connection, commissioning, electrical
disconnection Electrical expert or matching qualification
Installation, disassembly Fitter or matching qualification
Maintenance Electrical expert or matching
qualification
Fitter or matching
qualification
Repair
Electrical expert or matching
qualification
Fitter or matching
qualification
Smoke extraction fans and EX fans only by agreement with
Systemair.
Note:
The operator is responsible for ensuring that personnel are instructed and have understood the contents of
the operating instructions. If something is unclear, please contact Systemair or its representative.
2.2 Personal protective equipment
♦Wear protective equipment during all work in the vicinity of the fan.
• protective working clothes
• protective working shoes
• protective working gloves
• helmet
• goggles
• hearing protection
2.3 5 rules of electrical safety
1. Disconnect (disconnection of
the electrical system from
live components at all
terminals)
2. Prevent reactivation
3. Test absence of voltage
4. Ground and short-circuit
5. Cover or restrict adjacent live parts
3 Warranty
For the assertion of warranty claims, the products must be correctly connected and operated, and used in accordance
with the data sheets. Further prerequisites are a completed maintenance plan with no gaps and a commissioning re-
port. Systemair will require these in the case of a warranty claim. The commissioning report is a component of this
document. The maintenance plan must be created by the operator, see section 11.2 Maintenance.
4 Delivery, transport, storage
Safety information
Warning: Risk from rotating fan blades
♦Prevent access by unauthorised persons by safety personnel or access protection.
Warning: Suspended loads
♦Wear protective equipment during all work in the vicinity of the fan, details see 2.2 Personal protective equipment,
page 2.
♦Do not walk under suspended loads.
♦Make sure that there is nobody under a suspended load.
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Delivery, transport, storage | 3
4.1 Delivery
Each fan leaves our plant in an electrically and mechanically proper condition. We recommend transporting the fan to
the installation site in the original packaging.
Checking delivery
♦Check the packaging and the fan for transport damage. Any findings should be noted on the cargo manifest.
♦Check completeness of the delivery.
Unpacking
Warning
When opening the transport packaging, there is a risk of damage from sharp edges, nails, staples,
splinters etc.
♦Unpack the fan carefully.
♦Check the fan for obvious transport damage.
♦Only remove the packaging shortly before assembly.
♦Wear protective equipment during all work in the vicinity of the fan, details see 2.2 Personal protective
equipment, page 2.
4.2 Transport
Safety information
Warning: Electrical or mechanical hazards due to fire,
moisture, short circuit or malfunction.
♦Never transport the fan by the connecting wire,
terminal box, impeller, protection grille, inlet cone or
silencer.
♦In open transport, please make sure that no water can
penetrate into the motor or other sensitive parts.
♦We recommend transporting the fan to the
installation site in the original packaging.
Caution: If transported without care during loading and
unloading, the fan may be damaged.
♦Load and unload the fan carefully.
♦Use hoisting equipment that is suitable for the weight
to be hoisted.
♦Observe the transportation arrows on the packaging.
♦Use the fan packaging exclusively as transport
protection and not as a lifting aid.
4.3 Storage
Safety information
Warning: Risk of injury and damage to the fan.
♦Do not stack the fans on top of one another.
♦Do not use transport packaging as hoisting aids.
♦Use hoisting equipment that is suitable for the weight
to be hoisted.
Preconditions
♦Store the devices in a clean, dry and vibration-free
environment.
♦Storage temperature should be between –20°C and
60°C.
Storage more than 3 months
♦Turn the impeller at least 10 revolutions once a
month.
♦Please ensure that the impeller is at a different
position afterwards.
Storage more than 12 months
♦We recommend an inspection by the after-sales
service of Systemair before commissioning.
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4|Description
5 Description
5.1 General
• The fan conveys air in an axial direction from the intake side via the electric motor to the outlet side. (except AXCBF).
• The electrical connection is made through a terminal box installed on the outside of the housing (except AXCBF).
Sensors (optional)
Sensors can be connected to the fan to monitor the roller bearings and for vibration monitoring.
Standstill heating (optional)
The standstill heating starts when the motor switches off and vice versa.
5.1.1 Fan and motor data
• The technical data of the fan can be seen on the name plate or the data sheet.
• The motor data can be found on the name plate of the motor or in the technical documents of the motor
manufacturer.
• The data on the name plate of the fan apply to "standard air" according to ISO 5801.
5.1.2 Temperature types
Table 2 Types of fans
Type Diameter
[mm]
Long-term
operation
–20°C...55°C
Long-term
operation
-20°C...200°C
(B) 300°C/
120 min.
(F) 400°C/
120 min.
AXC1/AXR/AXS 315 — 1600 X
AXCBF 250— 800 X X
AXC (B)1/AXR (B) 315 — 1600 X X
AXC (F)1AXR (F) 315 — 1600 X X
AJR/AJ8 315 — 400 X
AJR (B)/AJ8 (B) 315 — 400 X X
AJR (F)/AJ8 (F) 315 — 400 X X
1also —P, —PV and —G
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Description |5
5.1.3 Air gap between housing and impeller
AXC
AXR
AXC-P
AJR
AJ8
AXC (K)
AXC (B)
AXR (K)
AXR (B)
AJR (K)
AJR (B)
AJ8 (K)
AJ8 (B)
AXC (K)-P
AXC (B)-P
AXC (K)-PV
AXC (B)-PV
AXC (F)
AXR (F)
AJR (F)
AJ8 (F)
AXC (F)-P
AXC (F)-PV
Standard
temperature
Size Poles
Hous-
ing
toler-
ance
Air gap Air gap Air gap Air gap Air gap
min max min max min max min max min max
315 2–pol 1 1 3 2 3,5 2 4 4 6 - -
355 2–pol 1 1 3 2 3,5 2 4 4 6 - -
400 2–pol 1 1 3 2 3,5 2 4 4,5 6- -
450 2–pol 1 1 3 3 4,5 2,5 4,5 66,5 3 5
500 2–pol 1 1 3 3 4,5 2,5 4,5 5 7 3 5
560 2–pol 1 1 3 4 5,5 2,5 4,5 6 8 3,5 5,5
630 2–pol 1 1 3 4 5,5 2,5 4,5 7 9 3,5 5,5
710 4–pol 1 1 3 4 5,5 2,5 4,5 7 9 3,5 5,5
2–pol 4 6 - -
800 4–pol 1 1 3 5 6,5 3,5 5,5 8 10 4 6
2–pol 5 7 - -
900 4–pol 1 1 3 5 6,5 3,5 5,5 9 11 4 6
1000 4–pol 2 2 5 5 7 4 7 10 12 5 8
1120 4–pol 2 2 5 6,5 8,5 4 7 11,5 14
1250 4–pol 2 5 7 9 4,5 7,5 12,5 15
1400 4–pol 2 6 9 7,5 9,5 14 16
1600 4–pol 3 7 10 8 11,5 16 18
1800 4–pol 4 10 14 11,5 15,5 18 21
2000 4–pol 4 10 14 11,5 15,5 20 23
2240 4–pol 5 12 16 13 18,5 0 0
5.2 Description axial fans (AXC, AXR, AXS)
• For B3 conventional motors, the motor bracket is made from galvanized steel sheet. B30 “pad mounted” motors are
fitted in the housing via threaded rods or a welded motor support.
• The motor with impeller is mounted to a sturdy supporting structure.
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6|Description
5.2.1 Construction
3
4
2
5
61
7
1 Motor 3 Terminal box 5Mounting feet
2Impeller 4Housing 6 Motor brackets
7Guide vane only available for -PV version
5.2.2 Types & variants
Table 3 Axial fan base types
Type Description
AXC Standard fan of the AXC-series. As a default, the fans are provided in protection class IP55,
ISO F.
AXS Special fans for marine, oil and gas applications.
AXR The conveying direction can be reversed by switching the direction of rotation.
Table 4 Axial fan variants
Type Description
-P Fan of AXC-series which uses impeller design of the "-P" generation.
-PV Fan of AXC-series which uses impeller design of the "-P" generation and includes bolt on
guide vane.
-Box Fan of AXC-series inside a sound-insulated box.
-G Fans constructed as garage version. Arrangement of two fans in series, switched behind
one another.
(B) Smoke extract fan suitable for 2 hours at 300°C. As a default, the fans are provided in
protection class IP54/55, ISO H. The connection wire from the motor to the terminal box is
protected via an additional flexible metal hose. The standard motors (400 V type B3) are
without motor protection.
(F) Smoke extract fan suitable for 2 hours at 400°C. As a default, the fans are provided in
protection class IP54/55, ISO H. The connection wire from the motor to the terminal box is
protected via an additional flexible metal hose. The standard motors (400 V type B3) are
without motor protection.
-SC Short Casing.
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Description |7
5.2.3 Accessories
Horizontal installation
12
3
45
6 7
8
9
10/11
13
8
14
15
Vertical Installation
1
2
3
4
5
11
6
13
14
1SG/SG-20* Protection guard
2 ESD-F Inlet cone
3 RSA Silencer
4 EV, EVH
(F400) Flexible connection
5 MPR Mounting ring from size 315 to 1000
6REV (60°C) Isolator switch
7REV (fire
rated)
Isolator switch
8 MP Mounting bracket from size 1120
9 MFA Mounting foot
10 SD Rubber anti-vibration mounts
11 FSD Spring anti-vibration mounts
12 ZSD/HNG Suspension spring anti-vibration mounts/Rubber-
metal damper for mounting on the ceiling
13 LRK Air operated damper
14 GFL Counter flange
15 ABS Outlet cowl
Note:
• Some accessories are also available for jet fans and AXCBF,
please check our online catalogue or contact Systemair.
• *The distance between safeguard SG-20 and the impeller
must be ≥ 850 mm according to ISO 13857.
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8|Description
5.3 Description Jet fans
5.3.1 Description AJR/AJ8
• In B3 conventional motors, the motor bracket is made from galvanized steel sheet. B30 “pad mounted” motors are
fitted in the housing via threaded rods or a welded motor support.
• The fan conveys air in an axial direction from the intake side via the electric motor to the outlet side.
• The silencers are equipped with protection grille made of galvanized steel.
• The acoustic insulation is non-flammable in accordance with DIN 4102 as described in directive 97/69 EC.
Table 5 Constructive features
AJR/AJ8 As a default, the fans are provided in protection class IP55, ISO F.
AJR (K)/AJ8 (K)/AJR (B)/AJ8
(B)/AJR (F)/AJ8 (F)
As a default, the fans are provided in protection class IP54/55, ISO H. The wiring from
the motor to the terminal box is protected via an additional flexible metal hose. The
standard motors (400 V type B3) are without motor protection.
5.3.1.1 Construction
1
3
2
4
5
5
6
6
7
AJ8
AJR
1
2
3
4
5
6
6
5
7
1 Motor 4 Housing 7 Mounting bracket
2Impeller 5Protective guard
3Terminal box 6Silencer
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Description |9
Table 6 Dimensions AJ8, AJR
211
L
E
F
B
H
AJR
AJ8
L
211
F
E
B
F
H
Size H [mm] B [mm] E [mm] F [mm] L [mm]
AJ8 315 (B), (F) 365 375 325 678 1535
AJ8 355 (B), (F) 395 400 355 678 1695
AJ8 400 (B), (F) 445 500 460 727 1875
ARJ 315 (B), (F) 365 223 265 433 1535
ARJ 355 (B), (F) 465 243 305 473 1695
ARJ 400 (B), (F) 505 266 350 516 1875
5.4 Description AXCBF
Directly powered axial fan with motor outside the air flow. The fan can be run in permanent operation up to a conveying
media temperature of 200°C. Maximum ambient temperature 55°C. Housing flanges on both sides with bores accord-
ing to eurovent 1/2 standard. B3 conventional motors with add-on terminal box.
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10 |Description
5.4.1 Construction
1 Motor
1
2
3
4
2Impeller
3 Housing
4 Motor
bracket
Table 7 Dimensions
Size 250 — 500 Size 630 — 800
F
½I
I
H
A
B
D
C
F
D
C
A
½I
I
H
Size
[mm]
AØ B Ø C Ø D Ø F Ø H I
AXCBF 250 535 448 328 250 280 10 4x90°
AXCBF 315 535 452 385 320 355 10 8x45°
AXCBF 400 625 585 480 401 450 10 8x45°
AXCBF 500 660 695 590 504 560 12 12x30°
AXCBF 630 790 728 634 -690 12 12x30°
AXCBF 800 880 890 797 -860 12 16x22.5°
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Description |11
5.5 Intended use
All axial fans
• The temperature of the air transported through the fan must not exceed the temperature range stated on the
name plate.
• For the temperature resistance of the smoke extraction fans (K), (B), (F), which can also be used to extract CO,
please refer to the name plate (e.g. 300°C/120 min).
Jet fans
• AJ8 and AJR jet fans are intended for installation in
underground and above-ground parking structures, to
facilitate ventilation and smoke extraction (K), (B), (F).
• For optimum operation, the jet fan must be
suspended horizontally from the ceiling in such a
position that intake and outlet are unobstructed.
Axial fans
• The axial fans of the series AXC/AXR/AXCBF in the
versions G (K), (B), (F) are intended for installation in
ventilation systems.
• The axial fans of the series AXC/AXR/AXCBF are
ready-to-use products and are used as components
for ventilation devices, machines and systems. These
fans can be used to extract, draw in or convey air.
• The fans can be installed both in duct systems and
also with free suction via an inlet cone and a suction-
side contact protection grille. Free discharge via a
contact protection grille is also possible.
Incorrect use
Incorrect use refers mainly to using the fan in another way to that described. The following examples are incorrect and
hazardous:
• The fan is not suitable for intake of aggressive media or media with a dust content so high that dust deposits on the
impeller or fan housing can affect the operation of the fan.
• The fan must not be installed in hazardous areas (areas with a potentially explosive atmosphere).
• The motors cannot be voltage controlled.
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12 | Name plate and type key
6 Name plate and type key
Values for the single fan unit at power efficiency optimum
determined without speed control
Installation and Operating Instructions are within the delivery.
Systemair GmbH - Seehöfer Straße 45 - 97944 Boxberg - Germany
* A variable speed drive must be installed with this fan!
P1:
0,92 kW
RPM:
2.940
Pitch angle:
20°
V:
3.218 m³/h
psf:
332 Pa
Number of certification:
This Powered Smoke and Heat Control ventilator shall be installed as per the manufacturer´s instruction.
Measurement cat. / Efficiency cat.:
A / Static
Efficiency grade:
(N38) N=39,0
Number of certification UK:
0086 CPR 719672
Max. temperature of transported air:
55°C - 300°C/2h
 :
32,4 %
Weight:
2797 CPR 719672
38 kg
H
Protection class, motor:
IP55
Fan impeller speed:
2865 1/min
Insulation class:
Nominal current:
1,66 A
Frequency:
50 Hz
Nominal power at shaft (P2):
0,75 kW IE3
Cos φ:
0,79
Voltage:
400V Y
Made in:
Germany
Manufacturing date:
06/2021
Order no. / Production no.:
0003500662 / 1251364
Type:
AXC 355-6/10°-2(B)-P
Stage 1 of 2
3
EN 12101-3 (2015)
Powered Smoke and Heat Control ventilator
1
2
3
4
5
6
1General data
2Technical data
3
Temp./Time information/
only listed on smoke
extraction fans
4ErP data
5Certifications and QR—
Codes
6Manufacturer Address
Table 8 Type key
AXC 355 -6 /10° -2 (-)(K), (B), (F) P—
• C — counter-rotating
• V — guide vane
• G — Garage
• A — Low pressure impeller
• P — plus (new impeller generation)
Temperature- Time information (smoke
extraction fan), see 5.1.2 Temperature types,
page 4
Number of poles
Blade angle
Number of blades
Nominal diameter of the fan
AXC Axial fan
AXR Axial fan — reversible
AXS Axial fan — ship
AJR Circular jet fan
AJ8 Octagonal jet fan
AXCBF Axial fan bifurcated
AXC-SC Axial fan-Short Case
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Installation | 13
7 Installation
Safety information
Danger: Risk that the fan does not work in case of fire.
♦Use installation material with fire resistance classes that meet temperature requirements.
Warning: Danger from falling fan or fan parts.
♦Check the surface before installation for load bearing capacity.
♦Consider all static and dynamic loads when selecting hoisting equipment and fastening components.
General safety information
♦Installation may only be carried out by adequately qualified persons, details see Table 1 Qualifications, page 2.
♦Move the impeller of the fan by hand before you install it in order to check whether that moves freely.
♦Prevent the possibility of foreign bodies being drawn in.
♦To reduce transmission of vibration to the duct system, we recommend flexible connections from our accessory
range, see 5.2.3 Accessories, page 7.
♦Bear in mind that parts of the impeller may protrude out of the fan housing.
♦If the product is installed with free suction or free discharge, install a protection grille to prevent injury from the fan
impeller. Make sure that the safety distance agrees with the standards DIN EN ISO 13857 and DIN 24167–1.
♦Tightening torques of screw-type connections according to DIN 13.
Preconditions
♦Ensure that the fan and all its components are
undamaged.
♦Ensure that there is enough space to install the fan.
♦Protect against dust and moisture when installing.
♦Do not install the fan if the gap in the table (5.1.3 Air
gap between housing and impeller, page 5) is not
complied with.
♦Ensure that the information on the name plates (fan
and motor) matches up with the operating conditions.
♦A warning sign must be attached close to the air
outlet, stating that the air outlet must not be covered.
♦Fit the fans in such a way that there is sufficient
access for troubleshooting, maintenance and repair.
Tests after long storage time (more than 12 months)
Note:
We recommend an inspection by the after-sales service of Systemair before commissioning.
Test the motor windings:
♦Measure the insulation resistance of each motor winding against grounding at 500 V DC. The insulation resistance
must be > 10 mΩ.
Measures for an insulation resistance < 10 mΩ:
1. If the motor has drain plugs, remove them to allow any moisture to drain and replace them when the motor windings
are suitably dry.
2. Dry the motor in a warm dry airflow (typically 40 degrees Celsius).
3. Measure the insulation resistance of each motor winding against grouding at 500 V DC.
4. Repeat the aforementioned steps until the measurement outcome > 10 mΩ.
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14 | Installation
Mounting feet
Depending on the kind of fan and the construction size, mounting feet are either included in the delivery or available as
accessories. If you are not sure, check the online catalogue or contact Systemair.
Avoid resonance frequencies
Important
Risk of damage to the fan due to resonance frequencies
♦The minimum fan speed should be double the resonance frequency of the anti-vibration system
(vibration dampers).
♦To avoid resonance frequencies, see 8.3 Frequency converter (if used), page 21.
7.1 Vibration dampers
Important
Risk of damage to the fan due to incorrect vibration dampers
♦Use the vibration dampers suitable for the respective weight.
♦Use the vibration dampers with fire resistance classes that match the respective application.
Sylodyn vibration kit (if used)
The responsibility for the Sylodyn vibration kit installation is with the buyer/installer.
Important
Risk of damage to the fan due to incorrect installed vibration dampers
♦The fan shall rest entirely on the sylodyn anti vibration blocks. It is important that the fan is not pressed
against the mounting frame, therefore the minimum distance of 15 mm has to be kept, see following
picture.
1Hexagonal head set screw
1
2
3
4
5
min. 15 mm
6
2Sylodyn anti
vibration block
Available as Systemair accessory with a hole Ø
16mm
3Safety plate Available as Systemair accessory with a hole Ø
16mm
4Hexagonal nut
5Mounting foot
6Mounting frame
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Installation | 15
Lifting and positioning
The weight of the fan units varies depending on the motor size and accessories. As a result, the fan unit can also be
very bulky and heavy. You can find precise information on the name plate or the data sheet.
Caution
Risk of parts falling down
♦When fitting the fan, pay attention to its weight and the weight of the components.
Lifting
♦Lift the fan unit slowly and carefully.
♦Use hoisting gear permitted for the weight of the fan.
♦Attach the hoisting equipment to flanges and foot
bores or at the marked places.
♦Use transport equipment (e.g. lifting eyes) if available.
♦Please observe the marking “oben/top” on the fan.
Positioning
♦Observe the arrows on the name plate or the housing
of the fan. They show the direction of rotation and air
flow.
♦Position the fan unit so that it is standing in the
planned direction of flow.
♦Provide enough free space for inspection and
maintenance work on the fan unit.
Anchor
♦Use suitable fittings.
♦If you are not sure, contact Systemair.
7.2 Installation positions
AXC, AXR, AXS
♦Consider below guideline for installation positions.
Note:
• Order process (Systemair configurator): If the type of installation is e.g. "SO" (vertical installation, >= IEC
160), a suitable motor is automatically used (in this case with different bearings).
• Please contact Systemair if a position marked with a “red-cross” is required for an existing fan.
Fans equipped with
• B3 <160 and B30 (Pad) The installation is possible in any mounting position.
B3 >160
AXCBF
Important
Overheating motor
♦The motor opening must be faced upwards to avoid trapped heat.
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16 | Installation
7.2.1 Installation of the ventilation system
Preconditions
♦The air flow of the fan must be able to open the air operated damper (LRK).
Installation duct
♦Do not place a duct bend directly
before or after the fan!
• This can cause damage to the
bearings or other parts of the fan.
• The duty point may not be
reachable.
• The fan may make noise.
♦Ensure a direct, smooth and
constant air flow to the device.
Ensure a free exhaust, see the
following pictures.
♦Install an inlet cone or a channel
section with a length of at least 2.5
x D. It is not recommended to install
the protective guard directly in
front of the impeller (without inlet
cone), as additional noise and a
deterioration of the air
performance may result.
♦To reduce transmission of vibration
to the duct system, we recommend
flexible connections from our
accessory range, see 5.2.3
Accessories, page 7.
D = nominal diameter
3
1
2
min. 2,5xD
min. 2,5xD
3
1Inlet cone 2Protective guard 3Flexible connection
Distance from the wall/ceiling
♦Ensure enough distance between the ceiling and the
wall.
• The duty point may not be reachable.
• The fan may make noise.
If the minimal distances are not possible for construction
reasons, install a deflector in front of the fan in a way
that ensures a direct, smooth and constant flow of air.
Contact with rotating parts must be ruled out at all times
– either by ducts of a corresponding length or by
protective grids.
D = Nominal diameter
min. 1xD
1xD
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