Vent-Axia MX 10/10 User manual

®
MX type roof extract fan
instructions for use

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Table of Contents
2
1. Foreword ………………………………………page 3
2. Guarantee and liability
2.1 Guarantee conditions …………………………page 3
2.2 Liability ………………………………………page 3
3. Safety
3.1 General safety regulations ……………………page 4
3.2 Pictograms used ………………………………page 4
4. Technical data
4.1 General specifications …………………………page 5
4.2 Dimensioned drawings …………………………page 6
5. Speed control
5.1 MX without speed control ………………………page 7
5.2 Speed control of one MX fan……………………page 7
5.3 Speed control of a number of MX fans …………page 7
5.4 RSC servo contact………………………………page 7
5.5 LTG temperature control ………………………page 7
6. Communication
6.1 Reading and adjustment ………………………page 8
6.2 VU Control Unit…………………………………page 8
6.3 Communication with laptop/PC …………………page 8
6.4 MX network ……………………………………page 8
7. Installation
7.1 Installation conditions …………………………page 9
7.2 Transport, storage and unpacking ………………page 9
7.3 Verification of delivery …………………………page 9
7.4 Installation ……………………………………page 9
8. Electrical connection
8.1 Controls clamp strip …………………………page 10
8.2 Wiring upon delivery …………………………page 10
8.3 Relationship between speed and
voltage at 0-10 V controls input ………………page 11
8.4 Wiring diagrams……………………………page 12-16
9. Adjustment
9.1 Summary of MX settings ………………………page 17
9.2 MX network: addressing,
settings and copying of settings ………………page 18
9.3 Control of air volume …………………………page 19
9.4 Measuring report………………………………page 20
10. Inspection and maintenance
10.1 Inspection and maintenance ……………… page 21-22
11. Malfunctions
11.1 Malfunction tables …………………………page 22-24
11.2 Replacement of components …………………page 25
11.3 Logbook ………………………………………page 26
12. EC declaration of conformity …………………page 27

This installation manual contains instructions for the installation and
maintenance of the MX roof extract fan. This manual applies to the
following types:
MX 10/10
MX 20/20
MX 30/10
MX 30/20
Read this manual carefully before commencing installation
or maintenance of the fan.
This manual contains information required for safe and
optimal installation of the MX roof extract fan. It is also
intended as a reference for service and maintenance work,
in order that this can be carried out in a sound manner.
2.1 Guarantee conditions
Applicable only to products installed and used in the United
Kingdom. For details of guarantee outside the United Kingdom
contact your local supplier.
Vent-Axia guarantees its products for two years from the date of
purchase against faulty material or workmanship. In the event of any
part being found to be defective, the product will be repaired, or at
the Company's option replaced, without charge, provided that the
product:
1) has been installed and used in accordance with the instructions
given wfth each unit.
2) has not been connected to an unsuitable electricity supply. (The
correct electricity supply voltage is shown on the product rating
label attached to the unit.)
3) has not been subjected to misuse, neglect or damage.
4) has not been modified or repaired by any person not authorised
by the company.
IF CLAIMING UNDER TERMS OF GUARANTEE
please return the complete product, carriage paid to your original
supplier or nearest Vent-Axia Centre, by carrier or personal visit.
Please ensure that it is adequalely packed and accompanied by a
letter clearly marked 'Guarantee Claim' stating the nature of the fault
and providing evidence of date and source of purchase.
The guarantee is offered to you as an extra benefit, and does not affect
your legal rights.
2.2 Liability
The MX has been designed for extraction of (polluted) air, which is
diagonally exhausted. Any other application is seen as ‘inappropriate
use’ and can result in damage to the MX or personal injury, for which
the manufacturer cannot be held liable.
Work to be carried out on the fan may only be carried out
by a qualified mechanical electrical engineer.
The manufacturer is not responsible for any damage derived from:
• non compliance with the safety, operating and maintenance
instructions in this guide;
• the use of components not supplied by the manufacturer;
• normal wear and tear.
Safety
It is important that you heed the safety instructions given below, for
sensible use of the MX roof extract fan but also for your own safety
and that of other people.
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1. Foreword / 2. Guarantee and liability
3

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3. Safety
3.1 General safety regulations
• Always comply with the safety regulations and instructions given
in this manual.
• Make sure that (parts of) the fan not (yet) anchored and tools
cannot fall off the roof and cause damage or personal injury.
• When the fan is completely or partly dismantled, make sure
nobody can touch rotating or live parts.
• Do not leave a (partly) dismantled fan which is connected to the
power supply, unattended.
• Make sure that parts which conduct electricity do not become
wet.
• The fan must be fitted in such a manner that there is no risk of
anybody touching the side of the fan which does not have a
protective screen (see EN 294).
3.2 Pictograms used
The following pictograms may be used in the manual.
Point of attention
4

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4. Technical data
5
400
350
300
250
200
150
100
50
0
0 500 1000 1500 2000
1800
1600
1400
1200
1000
800
600
400
max. power cons.
max. sound pressure level
m3/h
∆Pst
Pa (N/m2)
= MX
Current Power Noise level
Speed consumption consumption deliv suctionsuction*cos.
rpm A Wel dB(A) dB(A) dB(A) ϕ
1800 0,76 174 57 72 63 0,99
1600 0,55 125 54 70 61 0,99
1400 0,39 87 50 66 58 0,99
1200 0,26 60 46 63 55 0,99
1000 0,17 39 41 58 51 0,99
800 0,12 27 36 56 49 0,98
600 0,09 19 30 49 42 0,92
400 0,07 12 24 41 35 0,75
500
400
300
200
100
0
0 400 800 1200 1600
1600
1400
1200
1000
800
600
400
max. power cons.
max. sound pressure level
2000 2400 2800 3200 3600 m3/h
∆Pst
Pa (N/m2)
= MX
Current Power Noise level
Speed consumption consumption deliv suctionsuction*cos.
rpm A Wel dB(A) dB(A) dB(A) ϕ
1600 1,80 409 62 77 64 0,99
1400 1,16 266 58 74 62 0,99
1200 0,73 169 53 69 57 0,99
1000 0,44 100 48 65 54 0,99
800 0,25 57 42 59 49 0,99
600 0,14 31 36 55 45 0,96
400 0,09 17 28 48 39 0,82
MX 10/10
MX 20/10
0 500 1000 1500 2000 2500 3000 3500 4000
50
0
150
200
250
300
1000
900
700
500
m3/h
∆Pst
Pa (N/m2)
max. power cons.
max sound pressure level
800
600
100
400
= MX
Current Power Noise level
Speed consumption consumption deliv suctionsuction*cos.
rpm A Wel dB(A) dB(A) dB(A) ϕ
1000 1,30 297 56 71 61 0,99
900 0,92 217 52 68 57 0,99
800 0,64 148 49 65 56 0,99
700 0,44 103 46 62 53 0,99
600 0,29 67 42 60 50 0,99
500 0,19 44 37 55 46 0,99
400 0,13 28 33 52 43 0,94
MX 30/10
600
500
400
300
200
100
0
0 1000 2000 5000
1400
1200
1000
800
600
400
m3/h
∆Pst
Pa (N/m2)
= MX
max. power cons.
max. sound pressure level
3000 4000
Current Power Noise level
Speed consumption consumption deliv suctionsuction*cos.
rpm A Wel dB(A) dB(A) dB(A) ϕ
1400 3,34 761 64 78 67 0,99
1200 2,03 462 61 75 64 0,99
1000 1,18 269 57 71 60 0,99
800 0,65 147 51 66 55 0,98
600 0,32 72 44 60 49 0,98
400 0,12 28 36 51 41 0,98
MX 30/20

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4. Technical data
4.2 Dimensioned drawings
6
øD
F
E
H
B
G
ø10(4x)
A (inw.)
type type
of fan of acc* A B D E F G H
MX 10 330 460 330 575 60 473 44 196
MX 20 450 580 450 708 60 540 48 241
MX 30 535 665 535 863 60 601 64 302
* The coding indicates the gauge of the fastening holes.

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5. Speed control
7
Various regulators can be fitted in order to regulate the speed. A
distinction is made between regulation of one fan or regulation of a
number of fans at the same time.
5.1 MX without speed control
When the MX is delivered, it operates at the maximum set speed
when connected to the power supply. This capacity is given on the
label on the top of the controls. Remove the LUS3 from the clamp
strip of the controls (see chapter 8.2) and the MX will operate at the
minimum speed. In order to operate the fan at a different speed, this
speed must be set using the Control Unit VU (see chapter 6.1).
5.2 Speed control of one MX fan
The following regulators are available for speed control of one MX
fan.
SAG 0-M
Rotating switch for continuous adjustment of the speed. (see diagram
2 page 13 & SAG 0-M leaflet)
SAG 0-5
Rotating switch for adjustment of the speed in five positions. (see
diagram 2 page 13 & SAG 0-5 leaflet)
SAG 0-2
Rotating switch for adjustment of the speed in two positions. (see
diagram 2 page 13 & SAG 0-2 leaflet)
5.3 Speed control of a number of MX fans
The following regulators are available for speed control of a number
of MX fans.
VG 31
Power supply unit for the parallel control of maximum 31 MX fans.
The unit is fed with 230 V AC voltage. Depending on the speed
regulation required, the power supply unit is connected to the SAG 0
- M, SAG 0-5 or SAG 0-2.
DNG 31
Unit for day/night switching of maximum 31 MX fans. The switching
times are set with a timer. A central switch can be used to
simultaneously switch all connected fans on and off. The unit is fed
with 230 V AC voltage. The DNG 31 can also be used for day/night
switching of MX-ZMV.
5.4 RSC servo contact
The servo contact can be used for the parallel switching of another
system component, a valve for example. The servo contact is supplied
in a separate housing which can be fitted under the cover of the MX,
for example.
5.5 LTG temperature control
The LTG is a temperature regulator with which the MX speed can be
continuously adjusted, depending on the temperature. The
temperature is measured using the supplied temperature gauge. The
temperature is set between 20°C and 50°C using a rotation knob on
the housing. Rotation of a potentio-meter in the housing adjusts the
bandwidth between 0.5°C and 10°C. The speed of the MX varies
between the minimum and maximum of the set bandwidth.
The LTG can also be used in combination with the VG31.
One LTG can be used to control a number of fans.
cooling or heating
There is a choice between ‘cooling’ or ‘heating’.
- For cooling, the MX will be speeded up when the temperature
increases. A rotation knob on the LTG housing is used to set the
temperature, whereby the MX operates at the minimum speed.
The MX is speeded up as the temperature rises. The maximum
speed is reached at the set temperature + bandwidth.
- For heating, the MX will be slowed when the temperature
increases. The rotation knob on the LTG housing is used to set
the temperature, whereby the MX operates at minimum speed.
The MX is speeded up as the temperature drops. The maximum
speed is reached at the set temperature - bandwidth.
The cooling or heating function can be set using a number of jumpers
within the housing. The LTG also includes a jumper which can be
used to select that the fan is switched off when it reaches the set
temperature.

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6. Communication
For example
The jumpers in the housing are set to ‘cooling’. Temperature set at
25°C, bandwidth at 4°C. MX fan capacity set at: minimum 40%,
maximum 80%.
At 25°C, the fan works at 40%, at 25 + 4 = 29°C, the fan works at the
maximum capacity.
6.1 Reading and adjustment
Each MX is fitted with a connection for the Control Unit VU or a
laptop/PC. This connection can be found under the MX cover.
Various units can be adjusted and read via this connection, such as:
• type of fan and controls;
• required capacity and limitations of minimum and maximum
capacity;
• current speed;
• address and group number (for application of MX in a network);
• malfunctions.
6.2 VU Control Unit
The VU Control Unit allows for direct communication with the MX.
Method of operation
The plug of the unit is inserted into the MX connection. Once the
Control Unit has been switched on, the current data of the MX is
shown on the display of the unit. These settings can be changed.
Consider the following applications, for example:
• adjustment on site or subsequent re-adjustment of the capacity of
the MX;
• setting an address (MX in network).
The unit is supplied in a case with a user’s manual. Also included
with the unit is a charging unit for charging in a car (12V) or via a
wall socket (230V).
6.3 Communication with laptop/PC
The VENT-AXIA Maintenance Software can be used for direct
communication between the laptop/PC and MX. An interface is used
for connection of the MX to the laptop/PC.
The possibilities for adjustment and reading are virtually the same as
those for the VU Control Unit.
The main difference is that, when communicating with a laptop/PC,
the MX settings can be saved as a file. For a list of the options, refer
to the ‘VENT-AXIA Maintenance - Software – Networks –
Communication Manual’, available from VENT-AXIA.
6.4 MX network
A network of fans can be built, via inter-connection of a number of
MX fans using the communication connection. The serial connection
of each fan is double, in order to interconnect them. Each fan in the
network is programmed with its own address, via the lap-top/PC or
the Control Unit.
Besides the direct connection between the lap-top/PC or the Control
Unit with the network, reading and adjustment can also take place
remotely. From the lap-top/PC, a modem can be used to
communicate with an MX network at a different location.
The MX network at location must be connected to the telephone net
via a modem or other equipment, for this purpose. For more
information, refer to the ‘VENT-AXIA Maintenance – Software –
Networks – Communication Manual’, available from VENT-AXIA.
8

7.1 Installation conditions
• The MX must be installed according to the general and locally
applicable safety and installation regulations.
• The MX must be fitted in such a manner that there is no risk of
anybody touching the suction side of the fan (see EN 294).
• The permissible temperature of the air to be moved is from -30°C
to +80°C.
• The fan is designed for continuous operation and must not be
switched on and off more frequently than once every five minutes.
7.2 Transport, storage and unpacking
• The MX must be transported horizontally.
• During storage, the MX must be positioned horizontally.
• The fan should preferably be lifted using the recesses in the side
of the housing or on the base.
• Ensure that the packaging materials are disposed of in an
environmentally responsible manner.
7.3 Checking the delivery
• The type indication and other fan rating plate information must
match that on the order.
• The box contains the manual and a bag with mounting bolts and
rings, intended for attaching the MX to a mounting curb.
7.4 Installation
General
• It is vital that the roof construction or foundation on which the MX
is to be installed is sufficiently rigid. If it is not rigid enough,
undesirable vibrations may occur during operation of the fan.
• The fan must be installed using the supplied bolts and rings.
Ensure that both the foundation and the surface into which the
bolts are screwed are sufficiently strong to retain the fan even
under severe weather conditions.
• The fan must be mounted horizontally to avoid rain and wind
blowing into the fan. The maximum permissible angle of
installation is 5° to the horizontal.
• Ensure that the four corners of the fan mounting base are level.
An unlevel mounting base may result in uneven stress on the fan
construction.
• The power supply cable, any control cables and possibly a
pressure hose can be fed through a tube leading from under the
base of the fan to under the hood. This tube is indicated under the
hood as ‘supply cable’, see illustration 7.1. A tube to one of the
recesses in the corners of the ventilators can be used to feed
cables to the operating switch. This is indicated by ‘cable’, see
illustration 7.1.
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7. Installation
9
cable
supply cable
ill. 7.1

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8. Electrical connection
8.1 Controls connection strip
The connection strip of the controls is shown below.
• 0 –10 V controls input: for regulation of the speed of the MX
using low voltage switches.
• Release contact: the current at this contact must be 10- 250 volt
(AC or DC). When there is no current at the release contact, the
fan will not work, even if there is 230 V power supply.
• Malfunction contacts: There is a make and break contact. In case
of a malfunction, the contact between the two KL3A connectors is
closed and between the two KL3B connectors is opened. The
reverse situation occurs when there is ‘no malfunction’.
• Communication connection: for adjustment and reading of the
MX using the VU Control Unit or the laptop/PC. The contact is
double: one A/B connection is connected to a sub-D9 connector
in the frame, one A/B connector is free and can be used for
looping when the MX is included in a network.
8.2 Wiring upon delivery
The MX standard
There are three links on the controls connection strip. One or more
links may need to be removed in order to connect up control
equipment. Refer to the applicable diagrams in chapter 8.4.
• LUS1 is used to connect the +10V to the first connector of the
release contact.
• LUS2 is used to connect the GND to the second connector of the
release contact.
• LUS3 is used to connect the +10V to the Esoll of the 0-10V
controls input.
LUS1 and LUS2 provide current for the release contact. Via LUS3,
there is 10V on the Esoll of the 0-10 controls input. The fan will
therefore operate at maximum capacity following connection.
10
PE 1
18 V Eist GND
U3 10 V Esoll GND
U3
RS
ARS
BRS ARS BGND U3
An
LN
ÖG
S G EN EN
sensor connection
0-10 V controls input
KL2B
KL2A
Failure contact
break
PC/Control Unit connection release contact
2nd PC/Control Unit
connection
+15V
U4 +15V
U4 TW
PTC GND
U4 GND
U4
H1 H2 H3 UVW
Motor
KL3B
KL3A KL4
KL5A
KL5B KL6
PE2
Power supply
230V, 50Hz
Failure contact
make
PE 1
18 V Eist GND
U3 10 V Esoll GND
U3
RS
ARS
BRS ARS BGND U3
An
LN
ÖG
S G EN EN
KL2B
KL2A
PC/Control Unit connection
To WS
KL3B
KL3A KL4
lus 2
lus 1
lus 3