Airflow QT 150T User manual

Installation and Operating Instructions
QuietAir 150mm Axial Fan
MODEL:QT 150T Two Speed Fan (220/260m
3
/hr)
With Delay Start and Adjustable
Timer control
• Basic Switching with timer
• Low Energy
• Quiet
• Long Life
• Extra Safe
• Interval Timer
80000220 Issue 1 08/14

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Installation and Operating Instructions
CONTENTS
Chapter 1. GENERAL INSTALLATION AND OPERATION INSTRUCTIONS
1.0 Important Information
1.1 Warnings
1.2 Safety Instructions
1.3 Warranty claims – Disclaimer
1.4 Regulations Guidelines
1.5 Transport
1.6 Acceptance of delivery
1.7 Storage
1.8 Operational area
1.9 Performance data
1.10 Noise data
Chapter 2. GENERAL NOTES
2.0 Qualification of staff
2.1 Touch protection
2.2 Motor protection
Chapter 3. SPECIFICATIONS / DIMENSIONS
3.0 Specifications
3.1 Product lifetime
3.2 Accessories
3.3 Dimensions
Chapter 4. FUNCTION
4.0 Function description
Chapter 5. CLEANING / DEINSTALLATION
5.0 Cleaning
5.1 Cover dismantling
Chapter 6. INSTALLATION
6.0 Scope of delivery / Mechanical installation
6.1 Preparation for wall mounting
6.2 Installation
6.3 Electrical installation
6.4 Cable connection
6.5 Mounting
6.6 Operation
Chapter . INSTALLER FUNCTION
7.0
7.1
Function description
Performance Overview
7.2 Schematic overview
Chapter 8. CARE AND MAINTENANCE
8.0 Care and maintenance
8.1 Decommissioning and disposal
8.2 Troubleshooting

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Installation and Operating Instructions
CHAPTER 1
GENERAL SAFETY
INSTRUCTIONS
1.0 Important information
To ensure the proper functioning and for your own safety, the manual should be read
and observed.
This document is part of the product and should be available at all times to ensure
the safe operation of the fan. All equipment related safety regulations should be
adhered to.
1.1 Warnings
The adjacent symbols are safety warnings. To avoid any risk of
injury and dangerous situations, all safety regulations (symbols)
in this document should be strictly observed.
1.2 Safety Instructions
For use, connection and operation please refer to these instructions. If
in doubt, contact the manufacturer for advice. Other information is
relevant to standards and legislative texts.
For all work involving operation of the fan, general applicable
safety and accident prevention regulations should be observed.
 All electrical work and commissioning should be carried out
by authorized and qualified electricians.
 Maintenance and installation work should be carried out by
competent personnel.
 Before cleaning, maintenance and installation work or before
opening the terminal compartment the following points must
be observed:
- Disconnect the fan from power supply (all-poles) and secure
against restarting!
- Wait until all rotating parts have stopped moving!
- After rotating parts have stopped moving, waiting period of 3
min should be observed; dangerous voltages can occur by
internal capacitors even after disconnection from the network!
 All equipment-related safety regulations should be observed!
If necessary, further country-specific regulations should be
complied with!
 Contact protection (or Protection against accidental contact)
should be insured according to DIN EN 1385 (see Chapter
2.1)!
Contact with rotating parts should be avoided.
DANGER
WARNING
CAUTION
DANGER

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Installation and Operating Instructions
 Ensure a uniform inflow and free outlet!
 During operation within a fire place in the ventilated room,
sufficient air supply should be provided in all operating
conditions (please contact chimney sweep).
Valid local regulations and laws should be observed!
1.3 Warranty claims – Disclaimer
All versions of this manual should be observed; otherwise the guarantee will be
annulled. The same applies to liability claims against Airflow Developments Limited.
Any potential damages are not a subject of the guarantee. Changes and
modifications to the product are not allowed and will result in a loss of conformity in
such case any warranty and liability will be excluded.
1.4 Regulations – Guidelines
The fan should be properly installed and used for its intended purpose. The product
complies with the valid regulations and CE guidelines at the time of its production.
1.5 Transport
The fan is factory packed so that it is protected against normal transport loads. It is
recommended to leave the fan in the manufacturer’s original package.
1.6 Acceptance of delivery
A visual inspection upon delivery should be performed including damage and type
accuracy check. In the event of there being any damage, the necessary notification
of claim immediately has to be reported to the carrier. Any delay in complaint will
result in a loss of benefit entitlement.
1. Storage
When storing for a long period of time, avoid harmful impacts by following these
steps: protect the motor by dry, air and dustproof package (plastic bags with drying
agent and moisture indicator). The product should be stored in a vibration free and
water protected premise at a constant temperature ranging from 20 C up to + 40 C.
In compliance to Chapter 8, when storing a product for more than three months
(motor standstill), maintenance should be determined before commissioning. In case
of transshipment (especially over longer distances: e.g. sea), the packaging has to
be checked whether it is suitable for transport and on the route. Damages caused by
improper transportation, storage or installation are not covered by the warranty.
1.8 Operational area
- Appropriate use:
QuietAir 150 fans are used to convey normal or slightly dusty (particles size < 10
µm), little aggressive and humid air, into moderate climate and suitable area of its
performance curve (see Airflow sales documentation / Internet). Operation permitted
only for fixed installation within buildings. Maximum permitted medium and ambient
temperature is 40ºC. QuietAir 150 fans conform to protection rating IP45, protection
class II and according to VDE0100 part 701 can be installed in zones 1 and 2 of your
wet room.

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Installation and Operating Instructions
- Rationally foreseeable misuse
The fans are not suitable for use under difficult conditions such as high humidity,
aggressive media, longer downtimes, strong pollution, and excessive workload due
to climatic, technical or electronic influences. The same applies for the mobile use of
this fan (cars, aircrafts, ships, etc.). To perform under these conditions please check
with Airflow Developments Limited before installing.
- Prohibited use
Solids or solid impurities > 10 µm in transporting medium as well as liquids are not
allowed. Transporting medium which are aggressive against the fan material as well
as abrasive media is not allowed. Usage of the fan in an explosive environment is
prohibited.
1.9 Performance data
The device type plate is binding for the electrical data; this should conform to the
local supply network. On the test stand fan, performance complied with DIN EN ISO
5801.
1.10
Noise data
The noise data which relate to distances is valid under free flow conditions.
After installation the sound pressure level can vary significantly from the catalog
values since it strongly depends on the installation conditions, for instance the
absorption capacity of the room, the room size etc.
CHAPTER 2
GENERAL NOTES
2.0 Qualification of staff
Maintenance and installation work must be carried out only by an approved
electrician.
The QT150T should not to be used by children and persons with reduced physical,
mental or sensory capacities, without proper practical experience or expertise,
unless they are controlled or instructed on the product operation by the person(s)
responsible for their safety. Children should not play with the device. Cleaning and
maintenance must not be carried out by children without supervision.
2.1
Touch protection
The QT150T is supplied with a standard suction side protective grid. Depending on
the installation conditions protection against accidental contact on the discharge side
may also be required. Appropriate protective grids are available as an accessory.
According to the installation method (for instance installation in ventilation canals or
covered aggregates) fans are already protected and in such cases they do not need
a protective grid. It should be noted that the operator is responsible for compliance
with the current requirements and is liable for accidents.
2.2 Motor protection
The QT150B has an energy saving maintenance free EC Motor with high efficiency.
The motor is equipped with a thermal contact, wired in series, which automatically
switches on/off after cooling.
If the motor is blocked there will be an attempt to restart it every 3 seconds.
To start the motor a certain rotor position is required. If it doesn’t detect it, it outputs
pulses to the rotor in order to reach this position. This may take a few seconds.
DANGER

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Installation and Operating Instructions
CHAPTER 3
SPECIFICATIONS/
DIMENSIONS
QT150T
3.0 Specifications
Impeller – Ø 137 Electrical supply NYM 0 3x1,5 mm2
Alternating current Degree of protection IP 45
(jet proof)
Voltage/frequency 230 V, 50Hz Protection class II
Power input (W) 10 / 6 Weight approx. kg 1.2
Rated current (mA) 100 / 70 Rotational speed 1900/1600
Flow volume (m3/h) 260 / 220 Shut down (min.) 6,10,15,21
(adjustable)
Interval (H) 0,8,12,24
(adjustable)
3.1 Product lifetime
This unit is designed for a product life of at least 40.000 hours in Speed 1 mode with
maximum power in the maximum permissible ambient temperature.
3.2 Accessories
9041315 2 Speed Switch
Order Nr.
3.3 Dimensions

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Installation and Operating Instructions
CHAPTER 4
FUNCTION
4.0
Function description
1. Switch-on delay
The fan turns on only after the set delay time (0, 45, 90, 120 sec.). By mutual
activation the light function can be switched on for a short time without fan coming on
stream. Turn on delay performs only after coming to a complete stop of the fan.
When switching between current stages – ignore applicable switch on delay. By
mutual activation of both stages, turn on delay can be considered only when time
function is activated on both stages.
2. Push button operation
If there is no switch on delay (DIP 1 / 2 off / off) activated, then switch inputs 1 or 2
can be controlled by a push button. For this relevant stage time function should be
activated.
The button must be pressed for more than 0.5 seconds. As soon as the stage will be
activated by the push button, the corresponding stage will switch off itself at the end
of the run on time.
3. Shut down
By switching off the current stage the fan will turn off only after the set lag time has
elapsed. The length of the run on time can be adjusted (6, 10, 15, 21 minutes).
When switching between the stages, the run on time will be ignored. By mutual shut
down of the both stages, the run on time will be considered only when time function
will be activated on both stages.
4. Intermittent operation
The fan can be set at adjustable intervals to perform automatically. The intervals can
be adjusted (0, 8, 12, 24 hours). During the interval mode adjusted post run time
corresponds to the duration of the cycle. Intermittent operation starts after the last
turn off. The required ventilation is the overriding importance for the intermittent
operation. In the interim required ventilation, started interval time will reset and
restart after the shutdown.
CHAPTER 5
CLEANING /
DISMANTLING
5.0 Cleaning
Safety instructions listed in Chapter 1.2 should be observed!
Before cleaning always ensure that the fan is isolated from the power supply and
secured against restarting!
Clean cover, protective guard and visible housing parts (the external housing of the
fan) with a damp cloth!
Do not use any aggressive or paint solvent cleaning agents!
High pressure cleaners or water sprays should not be used!
5.1 Cover dismantling
1. Isolate the fan from the power supply and secure against restarting.
2. Pull the side pieces (cover plates) of the upper part of the housing outwards (see
Fig 1/Fig 2) to un latch it and upwards until the cover plate is opened.
DANGER
DANGER

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Installation and Operating Instructions
All of the following information and instructions are intended for
use by authorized electricians.
Fig 1 Fig 2

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Installation and Operating Instructions
CHAPTER 6
INSTALLATION
6.0 Scope of delivery / Mechanical Installation
A visual inspection upon delivery should be performed including a check to ensure all
components are present. Take the unit out of the box immediately before installation
in order to avoid possible damage and contamination during the transport as well as
at the construction site.
Scope of delivery:
1. Cover
2. Terminal compartment
cover incl. 4x fastening screws
3. Control board
4. Plastic housing with impeller
5. Guide vane, with limited
mounting depth removable
6. Backdraft shutter,
removable
7. Cable support sleeve x 2
8. Mounting kit
2x screws with plugs
for a wall mounting
9. Foam strips
6.1 Preparation for wall mounting
Safety instructions listed in Chapter 1.2 must be observed!
The fan is supplied as a complete unit, which is delivered ready for connection. The
installation and set up of the fan should be performed only after final cleaning to
avoid damage and contamination of the ventilation unit.
After unpacking and before installation the following points must be checked:
if any transport damage is noticed,
broken or bent parts
free rotation of the impeller
6.2 Installation
The QT150T is designed for direct wall mounting. The housing should not be
deformed or warped during the installation. Choose a flat location for mounting. Fans
can be heavy and are sometimes unwieldy. Proper precautions should be taken, to
ensure the assembly is well supported and stable before lifting into position. Fans
should be mounted on a strong and stable surface using appropriate fasteners.
1. Cable outlet in the wall
Position of the cable outlet in the dark area is variable (Fig 4).
Clearance to the pipe centre depending on the cable outlet r = 83 mm (at a variable
position from 0 up to 360).
For an easy assembly, it is recommended to place outlet as shown in fig 5 (90 
rotatable). The optimal position is at 45 when the cable outlet placed directly at the
position of the cable support sleeve.
QT150T Pipe inner diameter = ᴓ 150 mm
Clearance to room corners: at least 130 mm from the pipe centre
During the wiring the side recess for the cable entry in the housing (Fig 7,
Position1) should be broken out.
DANGER
Fig 3

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Installation and Operating Instructions
2. Boreholes
Position the housing, then mark and drill the holes and mount it with at least two
fastening screws and wall plugs.
3. Backdraft shutter and guide vane
If required backdraft shutter (included in delivery) can be installed behind the guide
vane (Fig 6).
During the housing installation, the guide vane should be mounted vertically.
Before final assembly stick on the rubber foam strips (included in delivery) (Fig 6).
6.3 Electrical installation/Commissioning
Safety instructions listed in Chapter 1.2 should be observed
All electrical installations to be carried out by an approved electrician
in accordance with presented manual and wiring diagrams.
Fan should be fitted with a 3A fuse at all times.
The relevant standards, safety regulations (for instance DIN VDE 0100)
and technical connection regulations of the energy supply company
should be observed!
An all-pole mains switch/isolation switch, with at least a 3 mm contact
opening (VDE 0 00 T1 .12.2 / EN 60335-1) is mandatory by law!
Network configuration, voltage and frequency of the power source
should match the information on the rating plate.
Fig 5
Fig 4
Fig 6 Fig 7
DANGER

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Installation and Operating Instructions
6.4 Cable connection
Use NYM cable with a customary maximum diameter of 11 mm.
Remove cable sheath to a length of 135 mm. Strip back each wire's insulation by about 8
mm.
Carefully slide cable through the grommet.
The wiring diagram (SS 1080) should always be used to ensure proper wire placement.
Check sealing of the connection cables and cable wires clamp.
If mounted at the inlet spout the sheathed cable does not enclose evenly, the spout should
be additionally sealed with silicone. Otherwise, the IP protection will be compromised.
The connection cable should be positioned in such a way that in case of water entering,
water may not penetrate along the cable. Cables should be laid in such a way that they do not
run over sharp edges.
Check the fan according to the intended use.
Supply voltage should match the name plate data.
Ensure secure mounting and proper electrical installation of the device.
Check the rotation of the impeller.
All parts of the fan, especially screws and protective grid must be checked for tightness. Do
not mislay the screws included with the unit!
- Ensure that the necessary protective guard is installed, as the unit cannot be operated
without it.
During the trial run the fan should be checked for vibrations and noise.
Power consumption should match the name plate data.
Length of individual wires 135 mm
Wire stripping 8 mm
Strip the non metallic sheathed cable which
sits flush with cable duct
1. Terminal compartment cover put on the
plastic housing and screw tight
2. Fit and snap in the cover
6.5 Mounting
6.6 Operation
Safety instructions listed in Chapter 1.2 must be observed!
To guarantee the proper function of the fan, the following should be checked regularly:
Appearance of dust or dirt in the housing (on the motor and impeller)
Free rotation of the impeller
Appearance of excessive vibration and noise
In case of problems with one of the points listed above maintenance should be carried
out according to the instructions in Chapter 8.
DANGER
DANGER
Fig 8 Fig 9
Fig 10 Fig 11

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Installation and Operating Instructions
CHAPTER
INSTALLER
FUNCTION
.0
Function description QT150T (Timer model)
1. Terminal assignment
- Terminal N / L
Terminal N and L have to be connected to the 230V operating voltage.
- Terminal 1
Terminal 1 activates the low stage.
- Terminal 2
Terminal 2 activates the high stage.
- Both terminals
The last specification conducts independently with or without timer.
By simultaneous operation of two stages conducts stage 2.
A change of the DIP switch settings must be carried out only by authorized
and qualified electricians. The device must be disconnected (all-pole) from
power supply. A change of the DIP switch is allowed only after switching off
mains supply.
2. Activation of the timer function
Timer function (turn on delay, run on time) can be activated at the requested stage or
deactivated via 7 and 8 DIP switches.
3. Switch-on delay
Turn on delay can be set via 1 and 2 DIP switches. The fan starts automatically only
after the set delay time has expired. By mutual activation the light function can be
switched on for a short time without fan coming on stream. Turn on delay performs
only after coming to a complete stop of the fan. When switching between current
stages – ignore applicable switch on delay. By mutual activation of both stages, turn
on delay can be considered only when DIP switches 7 and 8 are activated.
4. Push-button operation
If there is no switch on delay (DIP 1 / 2 off / off) activated, then switch inputs 1 or 2
can be controlled by a push button. For this relevant stage time function should be
activated.
The button must be pressed for more than 0.5 seconds. As soon as the stage will be
activated by the push button, the corresponding stage will switch off itself at the end
of the run on time.
5. Shut-down
By switching off the current stage the fan will turn off only after the set lag time has
elapsed. The length of the run on time can be adjusted via 3 and 4 DIP switches.
When switching between the stages, the run on time will be ignored. By mutual shut
down of the both stages, the run on time will be considered only when 7 and 8 DIP
switches are activated.
6. Intermittent operation
The fan can be set at adjustable intervals to perform automatically. The intervals can
be set via 5 and 6 DIP switches. During the interval mode adjusted run on time
corresponds to the duration of the cycle. Intermittent operation starts after the last
turn off. The required ventilation is the overriding importance for the intermittent
operation. In the interim required ventilation, started interval time will reset and
restart after the shutdown.
The speed assignment will be set via 7 and 8 DIP switches (see table below):
DIP switch Time function Interval
7 8
off off no time speed level 1
on off time at speed level 1 speed level 1
off on time at speed level 2 speed level 2
on on time at both speeds speed level 2

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Installation and Operating Instructions
.1
Function test – Test mode:
Upon connection of the operating voltage the fan is for 1 min in a test mode
(prerequisite: DIP switches factory settings, see SS 1081). In this case switch on
delay and run on time functions are within the first minute deactivated.
.2 Schematic overview for QT150T (Timer model)

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Installation and Operating Instructions
CHAPTER 8
CARE AND
MAINTENANCE
8.0
Care and maintenance
Safety instructions listed in Chapter 1.2 must be observed!
Prior to all work always ensure that the fan unit is isolated from the
power supply and secured against restarting!
In principle the devices are maintenance free; the unit is not user
serviceable. Nevertheless all necessary maintenance work must be carried
out by qualified electricians!
Excessive deposits of dirt, dust, fats etc. on the impeller, motor, protective
grids and especially between housing and impeller are not allowed; as it can
lead to heavy imbalance in the impeller, overheat the motor or even block
the impeller. In those instances the device has to be cleaned.
In case of no longer use the unit must be serviced before operation.
Should be examined:
 Secure mounting of the fan / replace if in doubt
 Remove contaminant deposits
 Mechanical damage, shut down the device, replace damage parts
 Firm seating of bolt connections, loosen screws
 Housing quality (cracks, brittleness of the plastic)
 Overrunning of the impeller, the impeller doesn`t run freely, note
possible causes of failure in Chapter 8.1
 Bearing noise
 Vibrations – see Chapter 8.1
 Power consumption according to the specifications on the type plate –
see Chapter 8.1
8.1 Decommissioning and disposal
Safety instructions listed in Chapter 1.2 should be observed!
During transportation safety instructions listed in Chapter 1.4 should be
observed.
Parts and components of the fan which have reached the end of their
lifespan, for instance because of the wear and tear, corrosion, mechanical
loading, fatigue and/or other effects that could not be directly discerned,
should be disposed in accordance with local and international laws and
regulations. The same applies to auxiliary materials such as oils, greases or
other substances. The conscious or unconscious re use of used components
such as impellers, bearings, belts, etc. may endanger persons, the
environment as well as the equipment itself. Relevant local operating
regulations should be observed and applied.
DANGER
CAUTION
DANGER

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Installation and Operating Instructions
8.2 Troubleshooting
Safety instructions listed in Chapter 1.2 should be observed!
Attention: If the impeller or motor is blocked allow 3 seconds for the
restart interval.
Causes Solution
Fan doesn`t start No voltage
Mains voltage check
Check connection according to
wiring diagram
Blocked impeller Clear blockage, clean or replace
Blocked motor Contact Airflow Technical
Support
Fuse Tripping Winding is short
circuiting the motor
Contact Airflow Technical
Support
Damaged cable or
connector
Replace parts, if necessary
replace motor (Contact Airflow
Technical Support)
Connected incorrectly Check the connection, modify
Vibrations Contamination Clean
Mounting vibrancy Check mounting, repair
Abnormal noises Grinding impeller Clean impeller, replace
Bearing damages Contact Airflow Technical
Support
Mechanical damages Perform maintenance
Fan doesn’t
perform properly
Insufficient air flow Check inflow and outflow / keep
clear
Wrong voltage Check connection / modify
Contamination Clean
Insufficient back flow Extend back flow

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Installation and Operating Instructions
Warranty:
Applicable to units installed and used in the United Kingdom. Airflow’s Warranty covers the QuietAir fan for TWO years. The Warranty can be upgraded to THREE
years from date of purchase against faulty material or workmanship by registering on our web site at www.airflow.com.
The Warranty covers the product only and not the installation cost.
In the event of any defective parts being found, Airflow Developments Ltd reserve the right to repair or at our discretion replace without charge provided that the
unit
1. Has been installed and used in accordance with the fitting and wiring instructions supplied with each unit
2. Has not been connected to an unsuitable electrical supply
3. Has not been subjected to issue, neglect or damage.
4. Has not been modified or repaired by any person not authorised by Airflow Developments Ltd.
5. Has been installed in accordance with latest Building Regulations and IEE wiring regulations.
Airflow Developments shall not be liable for any loss, injury or other consequential damage, in the event of a failure of the equipment or arising from, or in
connection with, the equipment excepting only that nothing in this condition shall be construed as to exclude or restrict liability for negligence.
This warranty does not in any way affect any statutory or other consumer rights.
Airflow Developments Limited
Aidelle House, Lancaster Road, Cressex Business Park
High Wycombe, B u ck i n g h a m sh i r e
HP12 3QP, United K i n gdom
E mail: [e-mail]
Telephone: [phone]
Facsimile: [phone]
airflow.com

Addendum – 10/2016
The Building Regulations 2010, Statutory Instrument Part 9, paragraph 42, imposes a requirement
that testing and reporting of mechanical ventilation performance is conducted in accordance with an
approved procedure.
Compliance with this requirement by an assessed and registered ‘Competent Person’ should follow a
‘Best Practice’ process and adopt air flow measurement, Method A – The Unconditional Method –
using a suitable UKAS certified measuring instrument. Generically referred to as a ‘Zero Pressure
Air Flow Meter’ or ‘Powered Flow Meter’.
Further information on this method is detailed in NHBC Building Regulations Guidance Note G272a
10/13 and BSRIA ‘A Guide to Measuring air flow rates’ document BG46/2015