BrookVent AS 92-ACE-H-125 User guide

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brookvent.co.uk
Installation, maintenance & user manual
Applicable to the following airstream ACE models:
PRODUCT CODE DESCRIPTION
AS 92-ACE-H-125 airstream Ø125 connection c/w Integral Humidistat
AS 92- ACE-H-204 airstream 204 x 60connection c/w Integral Humidistat
AS 92- ACE-H-075 airstream Ø75 connection c/w Integral Humidistat
AS 92-ACE-125 airstream Ø125 connection
AS 92- ACE-204 airstream 204 x 60connection
AS 92- ACE-075 airstream Ø75 connection
High performance
in a compact unit
Mechanical Extract Ventilation

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CONTENTS
PLEASE KEEP THESE INSTRUCTIONS WITH THE PRODUCT.
Please read this manual fully prior to installing the MEV unit.
1.0 Introduction........................................................................................................................2
2.0 Safety..................................................................................................................................3
3.0 Specifications/ Dimensions ................................................................................................4
4.0 Installation..........................................................................................................................9
4.2 Ductwork and Connections ..............................................................................................11
5.0 Electrical Connections/ Wiring.........................................................................................12
6.0 Controls and Settings .......................................................................................................14
7.0 Maintenance.....................................................................................................................22
8.0 User Operation.................................................................................................................23
9.0 Trouble Shooting ..............................................................................................................26

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IMPORTANT
This appliance is not intended for use 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 concerning use of the appliance by a
person responsible for their safety.
1.0 Introduction
The Brookvent Airstream ACE is a compact and highly efficient Mechanical Extract
Ventilation (MEV/CMEV) system, specifically designed for smaller dwellings and
apartments.
The system should be run continuously 24 hours a day and should only be disconnected
by a competent person during service or maintenance.
The system works by drawing stale air from ‘wet rooms’ such as Bathrooms, WC’s and
Kitchens and expelling waste air from the home. Simultaneously, fresh air is drawn into
the home, through passive vents in the walls or window in each habitable room.
1.1 Model Variations
PRODUCT CODE DESCRIPTION
AS 92-ACE-H-125 airstream Ø125 connection c/w Integral Humidistat
AS 92- ACE-H-204 airstream 204 x 60connection c/w Integral Humidistat
AS 92- ACE-H-075 airstream Ø75 connection c/w Integral Humidistat
AS 92-ACE-125 airstream Ø125 connection
AS 92- ACE-204 airstream 204 x 60connection
AS 92- ACE-075 airstream Ø75 connection
1.2 Product Guarantee
This product is guaranteed against defects for a period of 2 years from date of purchase
with the first year covering parts and labour and the remaining year covering parts only.
In the instance of a defect, Brookvent may repair the product, replace the product free of
charge or refund the cost of the product at Brookvent’s own discretion. In terms of
installation, operation and maintenance please follow all instructions provided. If this
product has been misused, not properly maintained, or handled carelessly it may lead to
this guarantee being declared void.

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Brookvent does not accept liability for damage caused by non-observance of the
installation instructions. Service activities must be carried out by Brookvent or by
competent installers using original Brookvent parts. This guarantee does not affect your
statutory right as a consumer.
Brookvent operate a policy of continuous innovation and improvement and thus
reserve the right to alter product specifications and appearances without notice.
2.0 Safety
The following information must be read carefully to ensure safe installation and
operation of the Brookvent MEV system.
2.1 General Safety
▪Do not use this appliance for functions other than those described in this booklet.
▪Never touch the appliance with wet hands.
▪The unit is only suitable for 230 VAC/50Hz electric mains.
▪This unit must be earthed.
▪Never modify the fan or electronics, all repairs must be conducted by Brookvent.
▪Never connect the power if electronics cover is not fitted.
▪Never connect the power if the unit is un ducted.
▪Do not store inflammable products in close proximity to the unit.
▪If cleaning/ dusting the external surface, do so with a dry cloth only.
2.2 Responsibility of the Installer
▪Correct Installation, balancing and commissioning of the MEV unit.
▪Record measured air flow volumes on each of the valves at High and Low rate.
▪Compliance to requirements and local additional rules.
▪Explanation of the ventilation system to the user.
▪All the above, as set out in Local or national regulations and guidelines.
2.3 Responsibility of the Occupant
▪Cleaning the valves in the rooms regularly to prevent blockage.
▪To ensure that the system is functioning properly on a regular basis.
▪To use manual boost switches (where provided) to prevent build-up of pollutants
or mould growth.

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3.0 Specifications/ Dimensions
3.01 Ø125 connection
H378mm x W354mm x D278mm
3.02 204 x 60 connection
H374mm x W368mm x D239mm

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3.03 Ø75 connection
H398mm x W398mm x D251mm
3.1 Duct Connections
Standard Configuration:
Exhaust to Outside
Extract from House
Outside

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3.2 Detailed Specification
Weight: 9kg
Materials:
• Main enclosure: Powder coated Zinc Plated steel.
• PCB & control panel enclosure: ABS FR.
• Mounting Bracket: Zinc Plated Steel.
Electrical:
• 230v EC Low energy, backward curved centrifugal fans.
• PCB c/w potentiometer control for commissioning.
• Supplied complete with 5 core flying lead: (Live: Brown), (Neutral: Blue),
(Earth: Yellow & Green), (230v Switched Live (Boost): Grey), (230v Switched Live
(Purge): Black).
Controls:
•Independent fan speed control (Trickle, boost and purge settings).
•Single 230v boost input (Light switch, humidistat, PIR, etc.)
•Boost over-run timer, adjustable between 0 - 100 min.
•In-built humidity sensor (Boost activation) Variable: 35% -100% RH, factory set: 70%
•Fan failure indication.
•Communication error indication.
Installation: Wall, Ceiling or Floor Mount
Standards:
Fully complies with Building Regulations for UK & Ireland
SAP Appendix Q Listed | Energy Savings Trust Best Practice | CE |UKCA
Guarantee Period: 2 Years

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3.3 SAP Appendix Q Results
SAP 2009 (See SAP - PCDB for further details) http://www.ncm-pcdb.org.uk/sap/
SAP 2012 (See SAP - PCDB for further details) http://www.ncm-pcdb.org.uk/sap/
Exhaust Terminal
Configuration
Fan Speed
Setting
Specific
Fan Power
(W/l/s)
Kitchen + 1 Wet
Room
100 %
Variable
0.19
Kitchen + 2 Wet
Room
100 %
Variable
0.19
Kitchen + 3 Wet
Room
100 %
Variable
0.22
Kitchen + 4 Wet
Room
100 %
Variable
0.28
Kitchen + 5 Wet
Room
100 %
Variable
0.33
Kitchen + 6 Wet
Room
100 %
Variable
0.41
Exhaust Terminal
Configuration
Fan Speed
Setting
Specific
Fan Power
(W/l/s)
Kitchen + 1 Wet
Room
100 %
Variable
0.19
Kitchen + 2 Wet
Room
100 %
Variable
0.19
Kitchen + 3 Wet
Room
100 %
Variable
0.22
Kitchen + 4 Wet
Room
100 %
Variable
0.28
Kitchen + 5 Wet
Room
100 %
Variable
0.33
Kitchen + 5 Wet
Room
100 %
Variable
0.41

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3.4 Airflow: Pressure/ Performance Curve
3.5 Acoustic Information
Lf (MAX)
Overal
l
Overall
Breakout
125
250
500
1000
2000
4000
8000
Lw
Lwa
dBA @ 3M
Speed
1
Open Extract
Duct
41.0
36.8
29.1
23.1
22.2
25.8
46.4
46.0
36.3
20.8
Breakout
38.3
23.1
21.3
12.9
10.4
13.1
16.5
43.8
30.6
Speed
2
Open Extract
Duct
38.8
34.8
27.9
23.6
20.0
25.3
42.8
42.1
34.6
19.5
Breakout
19.9
23.1
17.2
10.4
9.1
13.2
26.1
37.8
29.3
Speed
3
Open Extract
Duct
50.7
47.6
35.9
28.4
26.1
26.8
54.6
65.1
58.4
34.5
Breakout
44.0
40.1
41.3
29.1
27.4
25.9
20.6
50.8
44.3
Speed
4
Open Extract
Duct
59.4
61.8
51.8
46.0
41.1
30.3
65.8
70.4
64.9
39.3
Breakout
55.2
42.1
45.5
32.6
30.6
29.6
23.1
58.3
49.1
Speed
5
Open Extract
Duct
58.3
58.5
47.5
39.5
35.5
30.8
63.2
70.2
64.9
43.6
Breakout
45.5
44.3
49.4
36.2
34.4
34.4
27.6
63.7
53.4
Breakout based on hemispherical propagation at 3m

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4.0 Installation
It is important that the full installation of this system is carried out by competent persons,
including all electrical works and connections being completed by a qualified electrician.
The MEV unit is designed to be installed indoors, within an attic, storage cupboard, or
void space, away from exposure to frost, water, or intense heat. The system should be
installed in a ventilated space.
A clear access space is required around the unit; this will ensure ease of installation
relating to ductwork and wiring. It is important that the system can also be accessed for
replacement.
4.1 Mounting
Determine the best inlet and exhaust duct configuration to minimise bends close to the
unit.
Ensure there is adequate space to allow for maintenance of the unit and for end-of-life
replacement.
Fix the unit to the ceiling with fixing 4no. M6 anchors and M6 bolts (not supplied).
Place spigot caps on any of the outlets that are not being used.
Fit the ducting to the spigots and seal using duct sealant and/or aluminium foil tape.
Secure the duct in place with self-tapping screws (pilot hole may need to be drilled) or
metal banding and jubilee clips.
4.12 CEILING MOUNT
Please ensure that this method of fixing is suitable for the mounting surface and that it
can safely bear the load.
Fig. 1

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4.13 FLOOR MOUNT
The unit should be attached to the Floor, as shown, mounted on a raised plinth. (Fig.1).
4.11 WALL MOUNT
Please ensure that this method of fixing is suitable for the mounting surface and that it
can safely bear the load.
Fig. 2
Fig. 3

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4.2 Ductwork and Connections
To comply with SAP Appendix Q, and to facilitate the air flow performance, all ducting
used should be rigid or SAP approved semi-rigid duct. If flexible ducting is required, it
should be kept to an absolute minimum of 300mm and kept taut as per the Part F
Domestic Compliance Guide.
The spigots on the Brookvent airstream ACE systems are suitable for connection to
Ø125mm round pipe 204x60 rectangular duct or Ø75 semi rigid duct.
The main exhaust duct connection is Ø125 regardless of which model is used.
For optimum efficiency and performance, it is recommended that 125mm diameter
round pipe is used (where possible) to connect to the Exhaust duct run and continue in
Ø125 to the exhaust terminal. This will assist in keeping pressure losses to a minimum. A
minimum straight run of 300mm should also be used directly off each spigot (where
possible).
Where it is not possible to continue throughout the dwelling in rigid 125mm diameter
round pipe due to the void spaces available, the use of the AS92-0104-204 model
connected with 204mmx60mm flat rectangular ducting should be considered.
It is recommended that the number of bends in the ducting system is kept to a minimum.
The external roof terminal / wall terminal must be the equivalent to the open area of
125mm diameter round pipe (free area of at least 11000mm²).
To facilitate air circulation within the dwelling there must be a minimum of 10mm
undercut on each of the doors (to the finished floor) within the dwelling (or grills placed
at low level on the doors).
Extract air valves (Ø125mm) should be placed in all wet rooms (kitchen, utility, en-suite,
etc.) and should be sited, where possible, close to the main source of humidity/ pollutant.
Passive vents should be placed in all habitable rooms (bedroom, living room, dining room,
etc.).
Air valves should be locked upon commissioning so that they are tamper proof.
Duct designs/ layouts should always be adhered to if provided.

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5.0 Electrical Connections/ Wiring
IMPORTANT
All the electrical connections must be carried out by a qualified electrician. Installations
and wiring must conform to current IEE regulations (UK), local or appropriate
regulations (applying to other countries).
Electrical Details:
Voltage: 230 V AC ~
Fuse rating: 3 A
Warning: This unit must be earthed.
Please Note: The 5-core cable from the mains power supply must be connected to a fixed
wiring installation, via a 3 amp fused isolator, as to comply with current IEE wiring
regulations.
A switch or circuit breaker must be used in the power supply circuit. It should be in close
proximity to the MEV unit and should be clearly marked as the disconnecting device for
the MEV Unit.
Connecting to mains:
The airstream ACE unit comes pre-wired with 2m length of 5-core cable, which should be
connected into a fan-isolation switch. In turn a 3-core mains cable must be used to
connect to a 3A fused spur, which should be located close to the unit. The unit should
never be connected to a plug outlet.
The unit also comes pre-connected with a 2m length of alarm cable for connection to the
remote display.
L LIVE (BROWN)
N NEUTRAL (BLUE)
E EARTH (GREEN & YELLOW)
SW1 BOOST (BLACK)
SW2 PURGE (GREY)
D2 Green
D1 Yellow
12V Red
0V Black
The switch wires SW1 and SW2 are used to boost or
purge the system. When a live 230v signal is applied,
the Auto Boost/purge function will be triggered.

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5.1 Wiring Schematic
Fig 4
Fig 5

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6.0 Controls and Settings
6.1 Unit commissioning
The fan speeds for each mode along with the humidity setting and over run time settings
of the unit are controlled by one potentiometer in the wall switch.
To access the potentiometer to set the speeds, remove the white plastic cover from the
front of the wall switch.
To enter Set Up; Press and hold the SET key until the centre LED flashes green. This
means that the trickle speed can now be set. Using a small flat screwdriver adjust the
potentiometer up or down until the required airflow has been achieved.
To remove the front cover; insert a
small flat screwdriver into the slot
shown. Lift the screwdriver up until
you hear the click and then repeat
for the other slot on the bottom of
the switch. Now that the cover has
been loosened peel the cover off
the switch plate to reveal the
controls.

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The above example shows the unit set at 26% fan speed in trickle mode.
Press the set button to set the trickle speed and move to the boost speed. The LED will
flash blue. Adjust the potentiometer until the desired airflow has been achieved.
Press the set button to set the boost speed and move to the purge speed. The LED will
flash purple. Adjust the potentiometer until the desired airflow has been achieved.
See Fig 6
Press the set button to set the purge speed and move to the boost over run time. The
LED will flash Cyan. Adjust the potentiometer until the desired time has been achieved
(default 1min).
Press the set button to set the boost over run and move to the humidity activation level.
The LED will flash yellow. Adjust the potentiometer until the desired RH% has been
achieved. Press the set button to exit the setup mode.
These separate speed options allow one speed to be set for normal day to day operation
(I.e. Trickle) and an increased speed to be set (I.e. Boost) that operates by the pressing
the centre button on the wall controller once (colour changes to blue) or when the Sw1
switch wire is triggered by a 230v boost signal such as a Wall Switch or Passive Infrared
Sensor.

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The system will also go into boost if the set humidity level is exceeded. The internal
humidistat will cause the system to boost until the humidity levels have reduced below
the set level (only available in models AS 92-ACE-H-***).
All boost signals can be cancelled by pressing the centre button on the wall controller
until trickle mode is selected (Green light).
If the Boost for the unit is required to be set, it should always be set higher than the
Trickle. Adjusting the Speed Pot clockwise increases the fan speed.
Commissioning is carried out to ensure that the required air flows are achieved
throughout the property. The volume airflow at each point should be measured using a
suitably calibrated Airflow Meter (anemometer), this should be fitted with an adapter/
hood to ensure all air is captured and measured by the device.
For the required airflow rates refer to the design specification for the property and or
refer to local Building Regulations and /or guidelines.
If further guidance is required on the commissioning process, please contact Brookvent
directly.
Fig 6 LED Layout And colour code
Mode LED Legend
Colour Mode
Green Trickle
Blue Boost
Purple Purge
Cyan Over run
Yellow Humidity

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Trickle value
When “Mode” flashes
Green the value for
trickle can be set
Range 20%-100%
Trickle value
If the Adjustment is moved the mode LED
stops flashing and the new value is saved
with the next press of the set button.
Holding the centre button exits the setup
process.
Boost value
The currently stored
value for Boost
Range 20%-100%
Boost value
If the Adjustment is moved the mode LED
stops flashing and the new value is saved
with the next press of the set button.
Holding the centre button exits the setup
process.
Purge value
The currently stored
value for trickle
Range 20%-100%
Over run value
The currently stored
Over run time
Range 0-100 mins
Humidity value
The currently stored
Humidity Value
Range 35%-100%
Purge value
If the Adjustment is moved the mode LED
stops flashing and the new value is saved
with the next press of the set button.
Holding the centre button exits the setup
process.
Over run value
If the Adjustment is moved the mode LED
stops flashing and the new value is saved
with the next press of the set button.
Holding the centre button exits the setup
process.
Humidity value
If the Adjustment is moved the mode LED
stops flashing and the new value is saved
with the next press of the set button.
Holding the centre button exits the setup
process.

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Setting the Trickle speed
Above example is set to 21% on trickle.
Setting the Boost speed
Above example is set to 46% on Boost.
Setting the Purge speed (default 100%)
Above example is set to 85% on Purge.
Trickle value
When “Mode” flashes
Green the value for
trickle can be set
Range 20%-100%
Trickle value
If the Adjustment is moved
the mode LED stops flashing
and the new value is saved
with the next press of the set
button. Holding the centre
button exits the setup
process.
Boost value
When “Mode” flashes
Blue the value for Boost
can be set
Range 20%-100%
Boost value
If the Adjustment is moved
the mode LED stops flashing
and the new value is saved
with the next press of the set
button. Holding the centre
button exits the setup
process.
Purge value
When “Mode” flashes
Purple the value for
Purge can be set
Range 20%-100%
(default 100%)
Purge value
If the Adjustment is moved
the mode LED stops flashing
and the new value is saved
with the next press of the set
button. Holding the centre
button exits the setup
process.

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Setting the over run time (default 1min)
Above example is set to 5 minute over run.
Setting the humidity level (applicable models only)
Above example is set to 70% Humidity.
Over run value
When “Mode” flashes
Cyan the value for over
run can be set
Over run time
Range 0-100 mins
Over run value
If the Adjustment is moved
the mode LED stops flashing
and the new value is saved
with the next press of the set
button. Holding the centre
button exits the setup
process.
Humidity value
When “Mode” flashes
Yellow the value for
humidity can be set.
Humidity Value
Range 35%-100%
Humidity value
If the Adjustment is moved
the mode LED stops flashing
and the new value is saved
with the next press of the set
button. Holding the centre
button exits the setup
process.
The unit will enter boost
mode when the humidity
sensor reads the set level of
humidity.