Air handlings units catalogue

AIR HANDLING UNITS CATALOGUE
Uniclass
CI/SfB
(57.6)
EPIC
FOR THE COMPLETE VENTILATION SOLUTION

OUR COMPANY
INTRODUCTION 4
• NUAIRE’S PEDIGREE
• PROVEN TRACK RECORD
• INNOVATION
• OPTIONAL ON-SITE SERVICES
• ECOSMART CONTROLS
SPECIFICATION 17
• A GUIDE TO COMMERCIAL BUILDING SERVICES LEGISLATION
• INSTALLATION GUIDELINES
• USEFUL INFORMATION
PRODUCT GUIDE 30
• COMPLETE SOLUTION FOR VENTILATION
• INDEX OF PRODUCTS
029 2085 82002

OUR PRODUCTS
SECTION PAGE
• OPUSXBOX 34
• XBOXER HEAT EXCHANGE 40
• XBOXER 55 56
• XBOXER HEAT EXCHANGE TWIN FANS 64
• ECOSMART SQURBO 90
• ECOSMART BOXER 94
• UNDERBENCH CLASSROOM UNIT 112
• XBOXER THERMAL WHEEL 114
• XBOXER RUN AROUND COIL 120
• XBOXER CUSTOM AIR HANDLING UNITS 140
• BOXER MODULAR SUPPLY 150
3nuaire.co.uk

029 2085 82004
A SMARTER, MORE
ECO-FRIENDLY APPROACH
TO VENTILATION
Research tells us that over 80% of
the life cycle cost of a ventilation
system comes from energy usage.As
the leading energy-saving ventilation
controls technology system on the
market today, Ecosmart uses less
electricity and operates only when
needed, dramatically reducing
energy costs year on year and over
the system’s natural life.
FRESH APPROACH
Like the fresh, clean environments its
products create, Nuaire’s fresh
approach to ventilation has brought
its own rewards. Business is growing,
with innovative new products being
developed all the time, setting new
standards in energy efficiency and
reduced carbon emissions.
CUSTOM DESIGN
The latest manufacturing technology
and accredited test facilities enable
us to take a flexible approach to the
design and build of the right fan
solution. More importantly we
consider the interface with the
client’s equipment and processes,
which can usually lead to a
reduction in assembly costs.
COMMITMENT
TO QUALITY
At Nuaire, quality control and a
commitment to constant
improvement are ingrained in
everything we do.We were not only
the first fan manufacturer to achieve
the quality standard ISO9001 but
we are also currently approved to
BS EN ISO 9000:2000, the very
latest quality standard.
NUAIRE.THE AIR OF TRUE INNOVATORS
SETTING NEW STANDARDS
There’s more to Nuaire than technological innovations. Nuaire’s people make these innovations possible.The company has
over 400 committed and talented staff at its UK headquarters and its French subsidiary, with technical sales engineers in
every major city in Britain, as well as dedicated partners across the globe. Nuaire’s staff include industry-leading experts
who are constantly setting new standards by developing innovative products at the company’s research and development
unit, the largest and most advanced in the UK.The passion of our people and their commitment to excellence has produced
a large, loyal and growing customer base. Professional bodies have also recognised the company’s landmark achievements
with numerous industry awards.
Nuaire is a world leader in the innovation, development and
manufacture of fans and ventilation systems. Despite its name, the
company isn’t new. In fact, Nuaire’s innovative approach has its origins
in the 1930s, while its tradition of excellence in ventilation goes back to
1963. Since then, the Nuaire name has been at the forefront of
innovation in the industry, so much so that today the company is
recognised worldwide for its expertise, commitment to innovation and
the outstanding quality of its products and customer service.
OVERVIEW OF NUAIRE’S
HISTORY AND PEDIGREE

5nuaire.co.uk
We don’t believe in focussing solely on the ventilation system.A key aspect of Nuaire’s approach consists of the way we
interface with our customer’s equipment and manufacturing process leading, in the majority of cases, to a significant
reduction in assembly costs. With this approach we achieve great results and the satisfaction of our customers. The
following examples demonstrate not just how we approach things but some of the results we achieve.
PUTTING CUSTOM SOLUTIONS INTO CIRCULATION:THE MOST FLEXIBLEAHU RANGE ONTHE MARKETTODAY
The XBOXER range offers a solution for every conceivable application and environment, whether inside a plant room or
on a roof. There are XBOXER solutions for applications in industrial premises and public buildings as well as domestic
dwellings, schools, offices, shops and hospitals.
SWISS RE, LONDON
Ventilation: Ecosmart Boxer
The iconic Swiss Re was designed to provide an energy efficient alternative to
other office buildings.The steel and glass design maximises daylight penetration
and minimises the requirement for artificial light. Light level and movement
sensors prevent unnecessary lighting helping to reduce energy consumption and
cooling loads. Ecosmart Boxer provided the required high levels of ventilation
whilst being one of the most energy efficientAHUs on the market.
CASE STUDIES
MANCHESTER SCHOOLS
Ventilation: XBOXER heat recovery
XBOXER 55 high efficiency plate
heat exchangers were installed below
classroom ceilings to provide
enhanced air quality and improve
energy efficiency within the school.
The units required a high quality
paint finish, low depth, high
performance with tested & approved
noise levels to meet client and
relevant regulations.
HOLIDAY INN, BIRMINGHAM
INTERNATIONALAIRPORT
Ventilation: XBOXER thermal wheel
The 141 room hotel at Birmingham
Airport recently underwent a multi-
million pound refurbishment
programme. Nuaire’s XBOXER
thermal wheel sizeT6 was installed
on the roof top.The inclusion of the
unit in the hotel’s mechanical design
not only provides year round savings
in heating and cooling costs, it also
helps to increase the indoor air quality.
At Nuaire, we pride ourselves on working closely with our customer at
every stage of the development process, while the latest manufacturing
technology and accredited test facilities enable us to offer a flexible
approach to the design and build of the right fan solution.
INTERFACING WITH THE CUSTOMER’S EQUIPMENT, INTERFACING WITH THE CUSTOMER
PROVEN TRACK RECORD
COMPLETE SOLUTIONS

029 2085 82006
MORE THAN
JUST FANS
INNOVATION IN THE AIR
Nuaire has built a loyal customer base over the years and not just
because of the quality of its fans.The fact is,the company also has a long
and successful history in heat recovery and has been developing and
manufacturing AHUs for many years. In order to ensure quality control
and optimum energy conservation, the company manufactures the
majority of the components itself.
ContemporaryAHUs are called upon to meet all conceivable air handling requirements and standards throughout Europe.Every
AHU in the Nuaire range meets the requirements laid down by the classification in the CEN standard and is manufactured
in a factory that has been certified for its quality control (ISO 9001) and environmental policy (ISO 14001).
PUTTING OUR QUALITIES TO THE TEST
The company's rigorous product testing regime is unrivalled in the industry,
which is hardly surprising given multi-million pound test facilities considered to
be amongst the most modern and comprehensive in the world. It’s all designed
to ensure that our customers benefit from the best ventilation solutions on the
market today.The facilities have been designed to meet the latest industry
standards and carry the appropriate approvals including those from the British
Standards Institute and the Air Movement and Controls Association.
The two reverberant chambers at the facility (Type D and Type A configurations)
test for both aerodynamic and acoustic performance, allowing Nuaire to self-
certify products, including those for the French market, as well as ensuring that
products meet the high standards consistent with Nuaire’s reputation.
No two AHUs are the same whether you need to satisfy the most budget
demanding contract or the most sophisticated, energy conscious, bespoke
project the XBOXER range can fulfil your requirements. Nuaire’s experienced
team can provide technical information and support for any project that
requires an AHU.
The team utilise the latest parametric quoting software and can provide
quick and accurate estimates.The software also reduces time during
specification changes.
The team comprise of specialist engineers, project managers and technical
estimators all highly trained to ensure that your AHU project runs as
smoothly as possible from enquiry through to installation.

SIMPLE, PRECISE COMMISSIONING
As recommended in Part L, Ecosmart enables the system
to be accurately commissioned via an integrated speed
control, minimum and maximum speeds easily adjusted
via commissioning panel integral to the control.
QUIETER SYSTEMS
With Ecosmart your system is only at maximum design
duty when absolutely necessary.The noise levels within
your systems are lower because the fans or air handling
units are rarely at full speed.
IMPROVED LIFECYCLE
Ecosmart enables the fan or air handling unit to be run at
lower speeds.This reduces the maximum load and wear
and therefore increases the overall working life of the units.
DEMAND VENTILATION
Only ventilates the area when you want it to - why fully
ventilate a room when it’s not occupied - maximum
savings possible achieved.
HEALTHY ATMOSPHERE
Ecosmart has a trickle function as standard which when
activated, via a simple switch, enables you to set a
background ventilation rate, keeping the rooms fresh when
unoccupied, whilst still saving energy. System will boost or
ramp to maximum design duty when triggered by an
Ecosmart or other external device.
Ecosmart has a 5 year warranty.
OTHER CONTROL OPTIONS AVAILABLE
Refer to Commercial catalogue.
029 2085 82008
ECOSMART
ENERGY SAVING
CONTROLS
Nuaire’s Ecosmart energy saving ventilation control is the most flexible
system on the market with full BMS interface. All controls are pre-
assembled, configured and installed directly into the fan or air handling
unit, this includes 3-port motorised valves and actuators, pipework, off
coil thermostats and sensors, frost protection, etc. Site time is kept to a
minimum, and quality and efficiency is maintained.
Touch screen user control. ES-PIR2 sensor. ES-CO2 RM sensor.
Ecosmart plug-in system and
control example.

9nuaire.co.uk
ECOSMART INCLUDES A WIDE RANGE OF OPTIONS
ES-PIR2 (Passive Infra-Red)
Detects movement and activates system.
Incorporates a system status LED, overrun timer
and timer adjustment.
ES-LCD
Touch screen user control in white incorporating
time clock facility.This can control the function of
the fan by manual setting or using a set of timed
programs.
ES-LCDM
Touch screen user control in metal incorporating
time clock facility.This can control the function of
the fan by manual setting or using a set of timed
programs.
ES-HUMIDISTAT2
Activates the system when the RH level is above
set point. Incorporates two system status LEDs
(Green = OK, Red = Failure) and RH set point level
adjustment.
ES-THERMOSTAT2
Activates the system when the temperature is
above set point. Incorporates two system status
LEDs (Green = OK, Red = Failure) and temperature
set point level adjustment.
ES-AVI2
When fan failure occurs the AVI will flash a
warning. Supplied with pre-plugged 10m length of
communication cable.
ES-CO2RM & ES-CO2RMPP
Surface mounted room carbon dioxide (CO2)
sensors which incorporate a temperature sensor.
RM = SELV option, RMPP is complete with SELV ac
power supply.
ES-HTCSIG
Signal conditioning circuit for humidity,
temperature and CO2 sensors.
ES-TEMP2 Temperature Sensor
Modulate fan speed based on room temperature.
Incorporates two system status LEDs (Green = OK,
Red = Failure) and temperature set point level
adjustment.
ES-RH2 Relative Humidity Sensor
Modulate fan speed based on RH level. Incorporates
two system status LEDs (Green = OK, Red = Failure)
and RH set point level adjustment.
ES-UCF Manual user control
Manual ‘on’ and ‘off’ system user/speed control.
Incorporates two system status LEDs
(Green = OK, Red = Failure).
ES-CI Semi-automatic user control
Fan, heating & cooling selected by external volt
free switch, speed selected by 0-10V signal.
ES-JB Junction box
Designed to be compatible with Ecosmart System
this unit is supplied with a pre-plugged 10 metre
length of communications cable and has 8 further
ports.
ES-CO2 Sensor
Duct mounted sensor to modulate fan speed based
on CO2 levels. Connect to fan directly. Pre-wired
with 2m cable (not adjustable).
Switched Live by others
Any mains voltage signal connected to the switched
live terminal (S/L) in the unit.This affects the
connected fan only.
ECOSMART ENABLERS & DETECTORS ECOSMART SPEED CONTROLLING SENSORS
Simple Plug-in
System
BMS
0-10V dc signal to activate the system and modulate
fan speed. Select/Deselect H&C.
Note: this will override any other devices (eg. ES-UCF)
fitted (except in Constant Pressure fans).
Simple low voltage
sensors complete
with pre-plugged
cable means that
any control function
is easily achieved.
You decide which
conditions to
monitor and the
system will operate
at the optimum
speed.
Simple SELV wired, plug-in ‘enablers’ start and stop the fan, when activated
from either start-up or trickle ventilation mode.These ‘enablers’ include time
clocks, infra-red detectors, switch live contacts, humidistats, thermostats and
BMS contacts.
All systems must include at least one enabler. (NB.When used, BMS control and
time clocks take over all other enablers). Integrated speed control (inverter or
electronic) is included with all Ecosmart controlled fans and air handlers. ES-ISC
are external to some fans and need to be hard wired e.g. SQF,Airmover.
Once the fan is activated the sensor takes over.They will maintain comfort/
design conditions by automatically adjusting fan speed up and down and power
or flows through elements or heating/cooling coils.The sensors include
temperature, relative humidity, CO2 or as determined by the BMS.
Stylish and simple to operate user control facilitates manual operation where
desired.

029 2085 820010
ECOSMART, BMS AND COMMISSIONING CONTROL OPTIONS
Nuaire fans andAir Handling Units can be provided with the following pre-
selected control options, simply and easily by adding letters to the end of the
fan code, there is no need to select or specify the controls individually if one
of these options are chosen :
ES Ecosmart controls
The compact Ecosmart control module comes complete with a factory fitted
Ecosmart PCB which will control the fan unit within the desired design
parameters and provide the interface between all external control devices
detailed on these pages.
The Ecosmart control module has the following energy saving components
integrally mounted, pre-wired to interface with the purpose made PCB, all
components pre-wired, configured and factory fitted by the manufacturer:
(Not pre-wired to eg. SQF,Airmover).
• Integral Frequency inverter/speed controller.
• Integral maximum and minimum speed adjustment for commissioning.
• Integral adjustable run on timer.
• Integral BMS interfaces - 0- 10V speed adjustment.
• Integral BMS interfaces -Volt free failure and status indication.
• Integral background ventilation switch (trickle switch).
• Multiple IDC sockets for interconnection of sensors or fans using
pre-plugged 4-core low voltage cable.
• Pre-programmed with soft start function.
SET UP/COMMISSIONING BOX
The Ecosmart control module has the following two options fitted
as standard.
BMS interfaces
The Ecosmart control module can be pre-configured to provide the following
integrated BMS interfaces.
• 0 - 10 volt input to provide a full BMS interface.
This will enable the following functions:-
Switch the unit ON/OFF.
Switch heating or cooling ON/OFF (AHUs with relevant coils).
Switch from low speed to high speed - variable.
Switch from low speed to high speed - trickle and boost principle.
Full speed control facility.
• 2 No.Volt free contacts to provide fan run and failure indication to provide
system status.
• An integrated commissioning/speed control to accurately commission the
system, with minimum and maximum speeds easily adjusted via a miniature
dial, as recommended in Part L.This will enable the unit to be configured to run
between set parameters thus saving motor power and limiting noise.
COMMISSIONING SET UP
The Ecosmart control module can be pre-configured to provide the following
integrated commissioning features only.
• Integrated commissioning/speed control to accurately commission the system,
as recommended in Part L,This will enable the unit to be configured to run
between set parameters thus saving motor power and limiting noise.
• Minimum and max speeds easily adjusted via miniature dial.
The commissioning set up facility directly controls the integrated speed
control/frequency inverter.
ENABLING SENSOR
ES-PIR2 Sensor
The sensor operates with Safe Extra LowVoltage (SELV) with power supplied
from the fan unit via the communications cable.The ES-PIR sensor will activate
the system when movement is detected.An adjustable 1-60 minute timer is
incorporated to provide a run on facility. Up to 10m directly in front of lens and
up to 2m at 40º to the lens axis.
When adjustments are made to the sensor, the LED light on the sensor front will
flash on and off to show the set point. First, green flashes will indicate the set
point inTENS, then red flashes will indicate UNITS.
For example 1 green flash and 5 red flashes show you that the PIR timer is set to
fifteen minutes.
ES-Thermostat2
The ES-Thermostat will enable the fan when the ambient temperature is 1ºC
above the set point and will stop the fan when the temperature is at or below
set point.The sensor operates with Safe Extra LowVoltage (SELV) with power
supplied from the fan unit via the communications cable.Adjusting the sensor
set points. Adjustable temperature setting 10 - 35ºC.
After adjustments are made to the sensor, the LED light on the sensor front will
point inTENS, then red flashes will indicate UNITS. For example 2 green flashes
and 3 red flashes show a temperature set point of 23ºC.
N
NET
Fan 2 Fan 1
0V
0-10V
Run
Run
Fault
Fault
Link wire
0V = No BMS
0.25V = Off or Trickle
0.5V = Speed 1
0.75V = Speed 1 & Cooling
1V = Speed 1 & Heating
Heat & cool signal via NET to ES-VF
L
SL
OP
CL
N
RET
240V 1 ph 50Hz
*Sensor
*Not included as standard.
Switch live signal 100-230V
Damper Open 230V 1A
Close 230V 1A
Return 230V signal
Contacts Volt Free
Run & Fail
Neutral
0-10V BMS Signal
F3 F4
Ecosmart Control Device
Important:The Fan will not control external
Heating/cooling equipment, will only provide
ON/OFF Signal
MIN =
MAX =
SL Run on =
TRICKLE =
TEST =
LED indicators
Min Max SL run on
Trickle Test
0 1
Pwr
Standby
Fan 1
Fan 2
Heating
Cooling
Fault
Frost
Tx
Rx
Minimum speed
adjustment
Maximum speed
adjustment
Switched Live Run-On
Timer adjustment
Selects trickle running:
0 = off, 1 = selected
Test button

11nuaire.co.uk
ES-Humidistat2
The ES-Humidistat will enable the Ecosmart fan when the measured humidity
level is 2% above the set point and will stop the fan when the humidity is at or
below set point.The sensor operates with Safe Extra LowVoltage (SELV) with
power supplied from the fan unit via the communications cable.Adjusting the
sensor set points -Adjustable RH setting 65 - 85%.
After adjustments are made to the sensor, the LED light on the sensor will flash
indicating via a small aperture on the side of the sensor the set point. First, green
flashes will indicate the set point inTENS, then red flashes will indicate UNITS.
For example 7 green flashes and 3 red flashes show a RH set point of 73%.
SPEED CONTROLLING DEVICES
ES-RH2 Humidity Sensor
The ES-RH Sensor will vary the ventilation rate automatically according to the
measured humidity.Voltage (SELV) with power supplied from the fan unit via
the communications cable.The sensor has an adjustable 65 - 85% RH set point.
For example 7 green flashes and 5 red flashes show a set point of 75% RH.
Note: fan speed = 0 (i.e. off) at or below the set point.
ES-TEMP2
This will modulate fan speed based on room temperature.The sensor operates
with Safe Extra LowVoltage (SELV) with power supplied from the fan unit via
the communications cable.
For example 2 green flashes and 3 red flashes show a temperature set point of
23ºC.
Note: fan speed = 0 (i.e. off) at or below the set point.
Sensor Response - Normal operation (Proportional band
over ten 10ºC steps)
When temperature RISES, the fans will increase speed. (See above) which shows
a set point at 19ºC. For single phase fans, the speed steps are approximate and
actual running speeds will be dictated by the operating pressure of the system
and the type of impeller used in the blower. Fan is switched off at set point
unless the trickle switch is selected.
ES-CO2 Carbon Dioxide Sensor - Operation
The CO2 Sensor will adjust the fan speed in response to the CO2 concentration
in the airflow.The fan speed is divided into 10 steps from minimum (step 1) to
maximum (step 10). See table below for response details.
Speed 1 2 3 4 5 6 7 8 9 10
CO2 PPM 502 580 659 737 834 902 980 1059 1137 1215
ES-LCD and ES-LCDM (Time clock included)
The ES-LCD/MTime clock will switch the
system on and off at pre-determined times
set by the user.This digital time clock will
override the user control for effective on/off
operation or any other enabling device eg.
PIR. The time clock operates on Safe Extra
LowVoltage and is powered from the fan
control module. The connection is made into
any‘NET’ socket on the fans integral control
module. See I&M for further details.
ES-LCD and ES-LCDM includes:
Ventilation,Automatic Heating & Cooling Enable/Disable.
Temperature is set at main control of unit.
ES-CI (Ecosmart control
interface)
Enables any Ecosmart unit to be controlled via any remote non Ecosmart
switching device or item of plant.
Connect to fan via 4-core data cable
STATUS
PWR
Fan Heat Cool
(B) Switch to select
max or min speed
(A) O- IOV signal to select
fan speed only
Volt free contacts to select heating
and cooling operations
Volt free contact to switch on fan
OV
O-IOV
Min
Select
Max

029 2085 820012
The lower and upper threshold values can be adjusted as shown in the
following tables below and overleaf.
Note: Default operation is CO2 only.To select temperature option as
well please refer to I&M.
ES-CO2RM AND ES-CO2RMPP CO2 SENSOR
Max
speed
Min
speed
Off
See
note 2
0.15V
T1 or C1 CO2 T2 or C2
or
Temperature
signalAdjustable
Lower
threshold
Adjustable
Upper
threshold
TEMPERATURE THRESHOLD SWITCHES 1-9
Switch settings 3 2 1 Threshold temperatures
T1 (ºC) T2 (ºC)
Off Off Off 25 28
Off Off On 24 28
Off On Off 23 28
Off On On 22 28
On Off Off 25 30
On Off On 24 30
On On Off 23 30
On On On 22 30
ES-CO2 RM
CO2 and temperature sensor requires SELV power supply by others.
ES-CO2 RMPP
CO2 and temperature sensor supplied with SELV ac power supply.
The sensor will monitor the carbon dioxide (CO2) and temperature (see note 1)
within the room. If either reading reaches the low threshold values (i.e. C1 &T1)
see opposite, then a signal will be sent to start running the fan at minimum speed.
As the room CO2 and temperature rises, the fan speed will progressively increase
in steps until the upper threshold values are reached.When both CO2 and
temperature readings are in operation, whichever reading that results in higher
fan speed will be used by the fan unit.
The threshold values and other operations can be adjusted by setting DIL
switches on the PCB to different positions.
Note 1:As supplied; the default operation of the sensor will be based on
carbon dioxide reading. If operation with both carbon dioxide and
temperature is desirable then change position of switch 7 to ‘ON’.
Note 2: use switch 8 to change the off state (see table below).

13nuaire.co.uk
BMScompatible
Commissioningcontrol
Run/Failsignal(voltfree)
Invertercontrol(3phase)
Speedcontrol(singlephase)
Pre-pipedcoil(c/wDRV)
Motorisedcontrolvalve(c/wactuator)
AiroffTempstat
Frostprotection
Heatdissipationrunon
Pluginsensors(seeoverleaf)
TrickleandBoostswitch
AutomaticBypass
CONTROL CHECKLIST - WHAT’S INCLUDED
The controls indicated in the checklist are incorporated in the units as standard,
enabling you to co-ordinate your controls to avoid duplication and reduce costs.
Please refer to this when checking the controls specification.
www.nuaire.co.uk/specifications
Fan Code FanType
Ecosmart Boxer LPHW Air Handling l l l l l l l l l l
Ecosmart Boxer Electric Air Handling l l l l l l l l l
Ecosmart Squrbo Supply Unit l l l l l l l l l l l
Ecosmart Squrbo Extract Inline Single fan l l l l l l
Quietscroll EST Twin Fan l l l l l l l
Constant Pressure Twin/Single Fan l l l l l l
Extractor ESX Inline Single fan l l l l l l l
EcosmartAirmover ESAM* Inline Single fan l l l l l l l
Ecosmart Squif* Inline Single fan** l l l l l l l
EcosmartTwin Squif* InlineTwin fan** l l l l l l l
EcosmartAxus* Inline Single fan l l l l l l l
XBOXER Plate heat exchanger Heat Recovery l l l l l l l l l l l l l
XBOXERThermal wheel (size 4 to 6) Heat Recovery l l l l l **** **** l l l l l l
XBOXERThermal wheel (size 1 to 3) Heat Recovery l l l l l l l l l l l l l
XBOXER Run around coil Heat Recovery l l l l l l l l l l l l l
ES-OPUS Inline/surface/recessed l l l l l l
(Not compatible with ES-LCD)
* ESAM, Squif,Twin Squif and Axus have a separate Ecosmart control pack that needs to be hard wired.
** Motor out of airstream.
*** Does not apply to 'NC' (no control) XBOXER units.
**** Supplied by others.
Ecosmart fans and Air Handling Units are pre-programmed and use simple plug and go control interfaces reducing the need for complicated controls.
Ecosmart enables multiple fans to be interconnected & controlled by the same sensors.
Fully BMS compatible using 0-10V interfaces and volt free contacts, simplifying all your control requirements.
Ecosmart ES-OPUS. For units with heating/cooling coils provided with Ecosmart control.An enable signal needs to be provided for heating/cooling to operate
ie. ES-LCD, BMS O-10V and ES-CI.
Note: For other control options refer to Commercial catalogue.

029 2085 820014
NATURAL VENTILATION - SAVING MONEY COMES NATURALLY
Intelligent all-year-round ventilation.
A-Series e-stacks: innovative low energy approach for buildings
where rooms are connected to a central atrium.
S-Series e-stacks: Suited to spaces with higher heat gains and for
rooms with more than 35 occupants, such as halls and theatres.
R-Series e-stacks: Designed specifically for rooms occupied by 10
to 35 people, ideal for classrooms and offices.
F-Series e-stacks: Designed for spaces which have access to the
external wall and where sloping roofs are used for high level
windows.
By employing upward displacement in the
summer and a patented mixing mode solution
in the winter,e-stack uses natural ventilation to
reduce CO2 levels and energy bills while helping
to maintain a constant room temperature,
enabling occupants to work more efficiently
and more healthily.
.
IN SUMMER
Natural displacement ventilation can be utilised
allowing opening windows/louvres to provide make
up air for the natural stack effect through the
e-stack unit. This can be boosted in very high
temperatures to purge the rooms and return the
space to a comfortable level. In night cooling mode
the system allows cool air in through the e-stack
unit to take advantage of the thermal mass and
again can be boosted to provide additional supply
air and cooling.
IN WINTER
Fresh air is allowed to enter the space via the divided
shaft in the e-stack unit where it is mixed with warm
room air in the mixing box section. The mixed air is
then distributed in to the space at the desired
temperature avoiding cold drafts by constantly
measuring internal and external temperatures. The
remaining warm stale air is allowed to rise from the
space to the atmosphere.Internal CO2 sensors ensure
the system operates within building regulations 365
days a year.
The combination of natural ventilation and mixed
mode systems ensure ideal room conditions for the
occupants 365 days a year by intelligently monitoring
and controlling the ventilation system.We believe that
using this combination you can create environments
that are perfectly suited for all applications and
buildings.
For further details refer to the Commercial catalogue.
Cold Hot Low High
OUR NATURAL VENTILATION SOLUTION USES A COMBINATION OF NATURAL VENTILATION TECHNIQUES TO
KEEP BUILDINGS SUPPLIED WITH FRESH CLEAN AIR 365 DAYS A YEAR WHILST REDUCING ENERGY COSTS.
For further details visit www.nuaire.co.uk/e-stack

15nuaire.co.uk
The state-of-the-art hi-tech hub which was designed
byAtkins and installed by Interserve,encompasses 14
laboratories, four ICT suites, 30 teaching spaces, and
associated administration and ancillary features,
spanning in total 6,500m2
.
The hub’s main atria provides an avenue between
two teaching blocks and is a weatherised space
serviced by low velocity fans.
Mechanical ventilation housed in the buildings’ roof
voids includes stacked Xboxer heat recovery, while
Through a combination of passive and assisted night
cooling as well as controlled daytime ventilation
rates, the peak internal temperature observed was
27.5ºC even when external temperatures exceeded
29ºC (BB101 allows up to 120 hours over 28ºC, and
a peak temperature of 32ºC).
As you would expect in summer, CO2 levels
remained well below those required to meet BB101.
Additional savings were observed in winter due to
the heat gains in the space being used to temper
incoming air in a reliable, controllable manner.
The limited amount of thermal mass available for
temperature buffering was maximised, and the low
constant pressure twin fans were chosen to aid
ventilation in other areas including ICT suites, toilets
and administrative facilities.
A series stacks situated on the roofs are served by
shafts taken through the building, which serve all
classrooms and laboratories, delivering fresh air
efficiently and quietly to ensure that students and
staff are not disturbed during lesson time.
Both the natural and mechanical systems are
designed to work throughout the year.
energy fans in the units were only activated when
the internal spaces benefitted from increased
airflow through the rooms.
This low energy mixing negates the need for
preheating of air, which causes many naturally
ventilated buildings to actually consume more energy
than their mechanically ventilated counterparts. In
fact, space heating is only required for pre-heating
prior to occupancy, and in the coldest weather.
Asbuildingsbecomeincreasinglywellinsulatedandair-
tight,the e-stack system becomes an ever-increasingly
attractive option from an energy perspective.
NATURAL & MECHANICALVENTILATION
ATTHE HUB BUDMOUTH COLLEGE
CLIENT:DORSET COUNTY COUNCIL
ARCHITECT:ATKINS
BUILDING SERVICES:DORSET COUNTY COUNCIL
CONTRACTOR:INTERSERVE
LINTON COLLEGE, CAMBRIDGESHIRE
At Linton College in Cambridgeshire, the
effectiveness of the e-stack system was
highlighted through its ability to limit internal
temperatures even when external
temperatures soared.
Tim PestridgeArchitectural Photography LLP (CSCS compliant).
Members of the British Institute of Professional Photographers (BIPP).

OUR SPECIFICATION 17
• A GUIDE TO COMMERCIAL BUILDING SERVICES LEGISLATION
• INSTALLATION GUIDELINES
• USEFUL INFORMATION
17nuaire.co.ukDownload specification from www.nuaire.co.uk/specifications

029 2085 820018
A GUIDE TO
COMMERCIAL BUILDING
SERVICES LEGISLATION
BUILDING REGULATIONS PART L2 (CONSERVATION
OF FUELAND POWER IN NON-DOMESTIC
DWELLINGS) EFFECTIVE FROM OCTOBER 2010
The new part L2 Part A for new buildings and Part B
for work on existing buildings came into force in
October 2010.
To fall in Line with the EU Energy Performance in
Buildings Directive (EPDB), the new L2 2010 , Part F
(Northern Ireland – update due 2012) and the
Technical Handbook - Section 6 (Scotland) 2011
documents require a major change in the way
buildings are to be assessed for compliance with
energy efficiency and carbon emission standards.
The new approach taken is to compare the CO2
emissions for the actual building (Building Emission
rate – BER) with those of a notional building of the
same size and shape, and constructed to a concurrent
specification laid down in the National Calculation
Methodology (NCM) – the approved procedure for
demonstrating compliance with the UK building
regulations – (Target Emission rate –TER).
This approach has been adopted because of the
variations in improvement potential across a variety of
building types.Extensive research was carried out into
the main building categories,and appropriate levels of
CO2 emission reductions were identified based on the
cost of achieving them in the various building types.
When factored together with the likely build mix and
build rates, the aggregate CO2 emissions reduction
over 2006 emissions rates is 25 %.
Part L requires a reasonable provision for the
conservation of fuel and power in buildings by:
a.limiting heat gains and losses:
i. through thermal elements and other parts of the
building fabric: and;
ii. from pipes,ducts and vessels used for space heating
and space cooling and hot water services:
b. providing and commissioning energy efficient fixed
building services that are fitted with effective
controls and;
c. providing the building owner with sufficient
information about the building and the fixed building
services and their maintenance requirements, to
allow their efficient operation.
Approved Documents offer technical guidance on
means of compliance with the Buildings regulations.
They are not intended to represent the only methods
available,but they do provide reference points that are
useful in the practical process of compliance. If the
guidance is followed, there is a presumption that the
compliance requirements will be met.
Approved Document Part L2A covers work on new
non-domestic buildings and major extensions to
existing non-domestic buildings – i.e. where the
additional useful floor area is greater than 100m2 and
25% of the original building’s floor area.
Approved Document Part L2B addresses works on
existing buildings including extensions (smaller than
those mentioned above), change of building use,
provision or extension of controlled services and
fittings, replacement of thermal elements and
consequential improvements.The latter being general
fabric or services upgrades triggered by a complex set
of criteria related to intended works.
The new regulations require the submission of a
checklist that demonstrates that compliance has
been met against five defined criteria.These criteria
are detailed inApproved Document L2A.
Criteria1 is mandatory and refers directly to Building
regulation 17C.Criteria 2-5 are considered as guidance.
Criteria Main Points
1. The Building emission rate (BER) must be less than
the Target emissions rate (TER) as calculated under
the approved methodology.
2. The performance of the building fabric and heating,
hot water and fixed lighting systems should achieve
reasonable overall standards of energy efficiency.To
avoid a situation where poorly performing systems
or construction details are compensated for by other
means, limits on design flexibility are imposed for
building fabric and services.For building services,this
includes the use of appropriate controls,equipment
with minimum efficiency levels (verified by testing
to acceptable standards) see “Associated
Documents” below, and appropriate levels of
metering and monitoring.

19nuaire.co.uk
3. The building shall be provided with appropriate
passive control measures to limit solar gains – to
reduce the need for, or capacity of air conditioning
systems. (note that compliance with the suggested
assessment method does not imply that acceptable
levels of comfort will be achieved in the space.
4. The performance of the building, as built, is
consistent with the BER. Credits are given in the
emissions calculation procedures where this can be
demonstrated. Particular attention is required to
building air-tightness, where extensive guidance
exists and to the continuity of thermal insulation,
for which it is suggested that reference be made to
accredited construction details and third party
verification of design detail. Building services are
required to be commissioned effectively (where
possible) according to the approved procedures in
CIBSE guide M – Commissioning Management.
Documentary evidence of the use of the approved
procedure is required for Building Control to issue a
final compliance certificate. Air leakage testing of
ductwork may be required, depending on the
classification claimed in the BER calculation.
5. The necessary provisions for energy-efficient
operation of the building are put in place.This is best
achieved by using the guidance in CIBSE TM31 –
Building Log Book toolkit. Information on the
building services equipment may be cross referenced
to the specification documentation and the
manufacturers’ operation and maintenance
manuals. Data used to calculate the TER and BER
should be included in the Log Book along with the
recommendations for improvements that are
generated by the assessment software package used.
ASSESSMENTTOOLS - SOFTWARE
Thecarbonemissionscalculationmethodologyrequired
when generating the BER, TER and the compliance
checklist, is implemented in the Simplified Building
Energy Model (SBEM) with its user interface - iSBEM –
freely obtainable from the National Calculation
Methodology web site.Local authorities are authorised
to accept calculations only from persons deemed by
Building Control Bodies as suitably competent.
Several dynamic thermal modelling software tools
have also been approved for the purpose of assessment
and are commercially available, and offer additional
functionality.
Note that it is required to provide Building Control
with the design based TER / BER calculations,
together with details of the building specifications
upon which they have been based, prior to the
commencement of construction works.
At the end of construction, calculations based on
the completed design, and details of changes in
construction method or specification must also
be submitted.
ASSOCIATED DOCUMENTS
Because of the large amount of technical data and
information that is now required to prove compliance
with the Building Regulations, and the relative
inflexibility of theApproved document as a design tool,
it has become necessary to refer to additional
documentation for much of the technical detail.These
associated documents again offer guidance on
requirements without necessarily providing absolute
limits of performance.In many cases,reference is made
to a wide variety of relevant harmonised European
technical standards that exist to support the important
EU directives such as the Energy performance in
Buildings Directive, and the Energy Using / Energy
Related Products Directive.
For building services products, the Non Domestic
Building Services Compliance Guide describes
performance standards for the majority of equipment
types that are encountered in current designs,
including heating, cooling, hot water, pipe and duct
insulation,lighting,pumping and,of most relevance to
Nuaire products – Section 10: Air Distribution systems.
This guidance considers the following system types :-
Central air conditioning systems, central mechanical
ventilation systems with heating, cooling or heat
recovery, all“other” central systems, zonal supply and
extract systems where the fan is remote from the zone
and ducting is required – for example in a ceiling void
or on the roof, and local systems serving one room
directly (un-ducted) such as a window mounted fans.
The principal means of efficiency regulation for
ventilation systems is the use of limiting Specific Fan
Power (SFP).
As a straight-forward, easily calculated location and
duty specific measure, this single figure reference
effectively combines the actual efficiency rating of the
product,and the adequacy of the actual system design.
Calculated as the mains delivered power (W) divided
by the system delivered airflow (l/s),the guide provides
SFP limits for each system type.
The variations shown are related to assumptions made
abouttheefficienciesoftheavailableimpellers/motors
/drives employed,and the aerodynamic resistances of
the internal components – for example coils and filters
– within air handling units, and of the distribution
ductwork etc.

029 2085 820020
Additional SFP allowances are given for various system
elements.
Some of the application classes defined are extremely
tightly specified in this regard, and this leads to a
situation where fan types that may have practical
benefits (for example in acoustic properties) cannot be
used.
There are practical limits to the efficiency of
commercially available components, and this will
ultimately constrain the types of distribution systems
that may be used in terms of the operational system
resistance.
The latest edition of the Scottish Technical handbook
Section 6, includes limiting values for external system
resistance (this was also planned for the England and
Wales version, but deleted late on in the process).
The guide very clearly states (10.3 KeyTerms) that the
specific fan power of an air distribution system should
be calculated according to the procedure given in BS
EN 13779 2007 Annex D:- Ventilation for Non-
residential buildings – Performance requirements for
ventilationandroomconditioningsystems.
This important and informative standard describes
in Annex D: - the SFP value for the entire building,
defined as the weighted average of the SFPE values of
individual units and fans.
For variable air volume flow systems,the SFPE shall be
defined at a partial operating air flow and related
external pressure drop - specified for the fan or air
handling unit.
If the operating profile (of flow rate with respect to
time) of the unit is known, then this can be used to
establish the partial flow rate, and if not known, then
a default value of 65% of design maximum is
suggested as“a realistic mean annual value for normal
comfort ventilation.
Additional design criteria are defined for the
equipment: - for SFP at 25% of maximum duty to be
no more than that at full speed; provision of variable
speed drives for fans with motors of over 1100W; and
for the enclosure leakage grade to be L2 as defined in
BS EN 1886:2007 Ventilation for buildings - Air
handlingunits- Mechanicalperformance.
Ducting leakage standards are also defined.
Minimum control packages are suggested for each
system type,and it is stated that Heat recovery devices
should be included where supply and extract
ventilation systems include heating and/or cooling.
PART F – BUILDINGS OTHERTHAN DWELLINGS
Almost in complete contrast to the extreme detail
given concerning residential ventilation systems,
Approved Document F sets out guidance for the
following non-domestic buildings – offices, car parks
&“other” building types.
General guidance is given on indoor air quality criteria
to facilitate the development of alternative ventilation
solutions (from first principles).
Guidance is given on provision for maintenance access,
and the necessity to ensure the cleanliness of
ventilation systems and the security of a clean fresh
air supply for the protection of occupant health.
For office ventilation (for which a considerable amount
of technical research exists) several outline methods
are proposed for system design.
Alternative approaches (including natural and mixed
mode ventilation) are referred to via the appropriate
CIBSE guides.
For Car Parks, including those below ground simple
criteria are expressed for the provision of adequate
ventilation by means of accurate Carbon Monoxide
level control. Although not referred to in ADF, CO
based ventilation alone may not control visual
contamination levels,particularly where diesel engined
vehicles predominate.
Approved Document B is also very relevant to car parks
and should be cross referenced.
An alternative approach using natural ventilation
openings is given, and also mechanical systems with
simple air change rate limits are described, and
references given to additional sources of guidance.
For“other”buildings,Table 6.3 details an extensive list
of reference documents covering the ventilation
requirements of a wide range of buildings.
For more details about ventilation systems that can
help you meet part F contact Nuaire on
02920 858 200.

21nuaire.co.uk
SCHOOL BUILDINGS.
Compared to most other types of buildings, schools
and hospitals are extreme environments. They have
high occupancy levels and house many different
activities and functions within them. Areas include
offices, classrooms/study areas, canteens, commercial
kitchens and accommodation – a great mix and more
varied than most buildings.
Part F of the Building regulations applies to schools.
Ventilation provisions in schools can be made in
accordance with the guidance in DfES Building Bulletin.
BB101 exists as a complete design guide to ventilation
in schools, covering design rules for natural and
mechanical ventilation systems and concepts involved.
All major school building projects must now undergo
formal environmental assessment using the Building
Research Establishment’s environmental assessment
method BREEAM schools and the application of new
building regulations should reduce carbon emissions
significantly.
HOSPITAL BUILDINGS
Nuaire has been supplying ventilation systems to
hospitals for many years and are aware of the issues for
ventilating clinical environments.
Health Technical Memorandum 03-01 ‘specialised
ventilation in healthcare premises’ (published in two
parts):
i part A deals with the design and installation of
ventilation systems
ii part B covers operational management.
The guidance applies to new installations and major
refurbishments of existing installations.
The above memorandum also includes a revision to
reflect current guidance on theatre suite layout and
room sizes whilst including other key issues such as:
Issues relating to patient comfort and the prevention
of health care associated infections.Specialist systems
play important roles in these areas.
• Methods of controlling the casual exposure of staff
to anaesthetic substances
• The design and acceptance testing of general and
ultra-clean ventilation (UCV) systems.
• Setting out the minimum requirements for the design
of air-handling units with the regards to the control
of Legionella and other dangerous contaminants,and
safe access for routine inspection and maintenance.
For further details on school and hospital
ventilation system please contact Nuaire on
02920 858 200.

029 2085 820022
All Nuaire products are tested in accordance with UK, European
and International industry Standards for performance and
sound levels.
NUAIRE PRODUCTS
ACOUSTIC GUIDELINES
IT IS AT LEAST TEN TIMES MORE EXPENSIVE
TO CORRECT AN ACOUSTIC PROBLEM
THAN TO PREVENT IT.
These laboratory test standards are designed to
provide a consistent test method and which to a
limited extent that simulate the ways that a fan
may be used in a variety of installations.
Nuaire generally quote the noise levels separately
for the unit inlet, outlet and casing radiated (or
breakout) sources, to enable the system designer
to properly evaluate the product in the application.
The noise level measured on site, for example
during the commissioning process, is the sound
pressure level – and this cannot be directly
compared with the sound power levels quoted in
our fan selection tools (Nuaire catalogue and Fan
Selector).
Nuaire typically also quote a free field dBA level at
3m, and this figure, whilst useful for comparison
with other products, has a very specific definition –
and cannot be used for acoustic design purposes.
The dBA@3m figure quoted will never correspond
to a dBA measurement taken at 3m from a product
in a real building.
Acoustics is a complicated subject and must be
treated with caution as part of the services design
process. Our sales engineers and technical support
staff will often be able to offer advice on
appropriate product types for an application, but it
is often necessary to refer to acoustic specialists for
a definitive design solution.
Nuaire have put together the following bullet
points for your information and assistance :-
SYSTEM DESIGN – GENERAL AND COMMON
SENSE ISSUES
• Position the fan for minimum noise impact
• Position grilles and diffusers for minimum noise
impact
• Design the system for low pressure drop and
smooth air flow = low velocity ducting and grilles
etc.
• Where appropriate, use barriers and enclosures of
a suitable specification – ensuring that they are
properly installed (eg ceiling tiles and bulkheads).
Special acoustic grade materials are generally
available, and the first principle is to add mass to
the system – eg layers of plasterboard.
• Use appropriately specified attenuators and Anti-
Vibration mounts – again - properly installed and
not bridged to the support structure.
• Flexible or lightweight supporting structures, or
slow running fans, can require higher levels of
mechanical isolation, and this can only be
achieved with high deflection spring type mounts.
• Flexible Connectors are often a particular source of
breakout noise – if they must be used in sensitive
areas, then an acoustic grade should be specified.
• Single skinned rectangular attenuators can also be
vulnerable to breakout at the fan connection –
consider this carefully in your specification.
Ideally, use attenuators that have been specified
with breakout protection, and fit the flexible
connectors at inlet attenuator entry and outlet
attenuator exit. Any deviation from a straight
inlet/outlet condition, whether by crumpled
flexible connectors, bends, or offset transformation
pieces, will lead to an increase in the quoted in-
duct noise levels.
• Specify the correct duty with minimal allowances
- and commission the systems properly.
As a very rough “rule of thumb”, due to the
combined effects of an acoustic room property
known as“directivity” and a distance correction for
a real room situation, it is possible that the dBA
level measured in a room with a ceiling void
mounted fan above it, can be increases of 8-9 dBA
up to 14 dBA higher than the Free Field figure.
In general terms, a specification of NR 35 or 40 dBA
represents a very acceptable level for most people
in an office environment.
A requirement to achieve levels of NR 30 or 35 dBA
or less in a working space, can be considered as
challenging, and may require specialist acoustic
assistance. At the very least, with such a
specification, the acoustic requirements should be
a major design consideration.
Designated “Quiet” areas and bedrooms will need
to operate at these levels and preferably lower.
A final note: It is at least ten times more expensive
to correct an acoustic problem than prevent it.

23nuaire.co.uk
RULES OF THUMB
Plant/System Selection requirement Rule of thumb
Ductwork Typical duct velocities
– Low velocity systems 3 – 5 m/s
– High velocity systems 7.5 – 15 m/s
– Inlet louvres 2.5m/s through free areas
Ductwork Maximum pressure drop rates
– Low velocity systems 1 Pa/m run
– High velocity systems 8 Pa/m run
Ductwork Typical system resistances (including air handling plant)
– Low velocity supply 900 Pa
– Low velocity extract 300 Pa
– High velocity supply 1.5 – 2kPa
Air leakage allowance 5% in low velocity systems
VENTILATION RATES
The points which affect this are:
(a) the size of the building or room
(b) the purpose for which it is used
(c) the number of occupants
(d) the type of work they are doing
(e) heat gains from other sources, e.g., electric motors and equipment
(f) the amount of steam, dust and odours from production processes
(g) whether the customer has any particular temperature requirement for the
building
The table of recommended ACH given in information leaflets, and the more
extensive and detailed list given for different types of rooms and buildings is
based on a combination of practical experience and theory, and can safely be
used as a guide for all normal conditions in this country.
ACH = Air changes per hour
Environmental Building Application Factor Rule of thumb
Comfort Noise Levels:
Recommended maximum background noise levels for:
• very quiet rooms, eg concert halls, sound studios NR20
• quiet rooms, eg bedrooms, theatres, churches NR25
• private rooms, eg small offices, libraries, living rooms NR30
• public rooms, eg general offices, classrooms, small shops NR35
• general areas, eg reception areas, restaurants NR40
• work areas, eg kitchens, computer rooms, large shops NR45
Intelligibility of telephone conversations at background noise levels of:
• up to NR50 Satisfactory
• up to NR60 Slightly difficult
• up to NR75 Difficult
• up to NR75 Unsatisfactory
AIR CHANGE RATINGS
The simplest method of determining the ventilation rate required is to make
use of the accumulated experience of the industry expressed in a table of air
change rates.
The volume in cubic metres (m3) of the space to be ventilated is calculated
and multiplied by the number of air changes per hour to give the ventilation
rate in the m3 per hour. Division by 3.6 converts this to litres per second.
Ventilation rate (litres/s) = Volume (m3) x air changes per hour
3.6
USEFUL INFORMATION

029 2085 820024
USEFUL INFORMATION
RECOMMENDED AIR CHANGES
While the Building Regulations detail the level of ventilation required in specific
premises many engineers will also refer to the ‘Recommended Air Change Rates’
detailed within the CIBSE (Chartered Institute of Building Services Engineers) guides.
Application Air changes per hour
Banks 4 to 6
Cafes/Coffee Bars 10 to 12
Cellars 3 to 10
Changing Rooms 6 to 10
Cinemas/Theatres 6 to 10
Conference Rooms 8 to 10
Dance Halls 10 to 12
Dark rooms 10 to 15
Dental Surgeries 12 to 15
Entrance Halls 3 to 5
Factories/worshops 8 to 10
Garages 6 to 10
Gymnasiums 6 to 8
Hospital Wards 6 to 8
Kitchens – commercial 15 to 30
Laundries 10 to 15
Libraries 3 to 4
Offices 4 to 6
Public House Bars 6 to 10
Restaurants 10 to 15
Schoolrooms 4 to 6
Shops/supermarkets 8 to 10
Showers/Bathrooms 15 to 20
Stores/Warehouses 3 to 6
Swimming Baths 15 to 20
Toilets – public 6 to 8
Utility rooms 15 to 20
RULES OF THUMB FOR AIR TIGHTNESS
The Building Regulations require all commercial and industrial buildings with a
gross floor area greater than 500m2
to be tested for air tightness to a minimum
standard of 10m3/h.m2
at 50 Pascals.
Note that many passive and low energy comfort control systems, such as
Termodeck, require values of fabric airtightness considerably better than
required by the Building Regulations for them to perform optimally.
Source: Building regulations

25nuaire.co.uk
BENCHMARKS FOR GOOD PRACTICE ENERGY CONSUMPTION
(kWh/m2
/y treated floor area)
Cellular Open plan
natural natural Standard air Prestige air
ventilation ventilation conditioned conditioned
Gas
Good practice 79 79 97 114
Typical 151 151 178 210
Electricity
Good practice 33 54 128 234
Typical 54 85 226 358
Source: BSRIA Blue Book 2008 www.bsria.co.uk
ENERGY BENCHMARKS
Offices
Energy efficiency rating (kWh/m2
per year)
Good Fair Poor
Air conditioned over 2000m2
<250 250-410 >410
Air conditioned 2000m2
or under <220 220-310 >310
Computer centre <340 340-480 >480
Natural ventilation over 2000m2
<230 230-290 >290
Natural ventilation 2000m2
or under <200 200-250 >250
HISTORIC U VALUES (W/M2
/K)
Non-domestic buildings
2002 1985 1972 1965 1958
Walls 0.35 0.6 1.7 1.7 1.7
Roof 0.16 0.6 1.42 1.42 –
Floor 0.25 0.6 1.42 1.42 –
ENERGY CONSUMPTION BREAKDOWN
Offices
Naturally ventilated (%) Air Conditioned (%)
Space heating 60 48
Lighting 20 16
Hot water 12 6
Cooling 0 10
Other electricals 8 20
COST OF M&E SERVICES
Type of building and service
Type of building Type of Service and Building M&E services £/m3
Offices Air conditioned (owned) 480
Air conditioned (let) 411-426
Not air conditioned (owned) 291-301
Not air conditioned (let) 260-270
Factory Purpose built for owner 120-180
Warehouse High bay (owned) 95-185
Education Secondary/middle school 180-350
Hospitals District general 425-600
Private 630-650
USEFUL INFORMATION

029 2085 820026
THERMAL LOADS
Thermal load Type of Building or load Load per unit area
Heating load Offices 70 W/m2
Industrial 80 W/m2
Educational 100 W/m2
Retail 110 W/m2
Residential 60 W/m2
Total cooling load General office 125 W/m2
Interior zones (more than 7m from windows) 75 W/m2
Perimeter zones – 65% glazing 180 W/m2
60% glazing 120 W/m2
Typical buildings Retail 140 W/m2
Banks 160 W/m2
Restaurants 220 W/m2
Hotels 150-300 W/m2
Computer suites 400 W/m2
Solar Heat gains Windows with internal blinds south facing, June-Sept 250W/m2
of glass
Windows with internal blinds east-west facing, June-Sept 150W/m2
of glass
Other heat gains Metabolic 10 W/m2
Lighting 12 W/m2
Office machinery 15 W/m2
Source: Rules of Thumb, BG 14/2003. BSRIA Blue Book 2008 www.bsria.co.uk
HEATING DEGREE DAYS
10 year average – September to May
Area Sept Oct Nov Dec Jan Feb Mar Apr May
Thames Valley 52 132 226 315 313 276 228 177 100
South East 71 158 248 332 334 302 252 201 124
Southern 62 134 217 302 307 277 246 199 114
South West 54 123 201 280 285 254 235 194 114
Severn Valley 43 120 200 294 293 257 219 178 97
Midlands 78 169 254 348 349 298 264 213 135
West Pennines 79 165 250 341 341 289 259 203 129
North West 95 182 271 354 358 308 288 227 147
Borders 99 179 262 343 346 292 281 238 179
North East 90 173 259 345 348 285 273 229 166
East Pennines 77 167 260 350 353 293 260 206 133
East Anglia 70 152 257 345 346 311 270 213 135
West Scotland 103 190 269 361 351 300 285 226 154
East Scotland 106 194 282 367 367 309 290 234 177
N E Scotland 115 202 284 375 361 312 303 253 198
Wales 68 140 216 296 310 271 254 211 143
N Ireland 96 174 254 333 337 288 273 221 153
N W Scotland 117 199 259 326 327 298 305 255 199
USEFUL INFORMATION

RECOMMENDED COMFORT CRITERIA
Building/room type Winter dry resultant Summer dry resultant Suggested air supply Maintained
temperature (°C) temperature (°C) (l/s/person) illuminance (lux)
Offices
Executive 21-23 22-24 10 300-500
General 21-23 22-24 10 300-500
Open-Plan 21-23 22-24 10 300-500
Retail
Shopping Malls 12-19 21-25 10 50-300
Small Shops 19-21 21-23 10 500
Supermarkets 9-21 21-23 10 750/1000
Banks, building societies, post office
Counters 19-21 21-23 10 500
Public areas 19-21 21-23 10 300
Relative humidity for comfort 40-60%
Source: CIBSE Guide A 2006
27nuaire.co.uk
ANNUAL SERVICE CHARGES
(lettable areas)
Design area Application Other information Rule of thumb*
Offices (let)1
Air-conditioned Average service charge £1.29/ft2
for heating and
air conditioned
maintenance
Non Average service charge £0.67/ft2
air-conditioned for heating maintenance
Lifts Averageservice charge £0.23/ft2
for lift maintenance
Shopping Average service Enclosed air-conditioned
centres2
charge by size, • small £4.60-£5.30/ft2
location and type • medium £5.45-£6.96/ft2
• large £4.60-£5.30/ft2
Enclosed non air-conditioned
• small £3.48-£4.51/ft2
• medium £3.98-£5.28/ft2
• large £3.48-£4.51/ft2
Source: 1 Office Oscar 2006, Jones Lange LaSalle
2 Retail/Oscar 2006, Jones Lange LaSalle.As referenced BSRIA Blue Book 2008
ANNUAL M&E MAINTENANCE COSTS
(Gross floor area)
Design area Application Rule of thumb
M&E maintenance Factories £800/100m2
Factory/office £800/100m2
Warehouses £700/100m2
Offices – air conditioned £2250/100m2
Offices – non air conditioned £1300/100m2
Call centres £2400/100m2
Banks/building societies £2150/100m2
Shopping centres – air conditioned £950/100m2
Shopping centres – non air conditioned £750/100m2
Supermarkets £1550/100m2
Shops (non food) £1100/100m2
Hospitals £1800/100m2
Nursing homes and hospices £1100/100m2
Swimming pools £1900/100m2
Sports centres £1400/100m2
Sports centres with swimming pools £1850/100m2
Primary schools £1250/100m2
Secondary Schools £950/100m2
Universities £1500/100m2
Museums £1400/100m2
Libraries £1700/100m2
Computer buildings £2400/100m2
USEFUL INFORMATION

029 2085 820028
CONVERSION FACTORS
Length 25.4mm 0.039in
0.3048m 3.28ft
1609m 0.00062 miles
Area 6.4516cm2
0.155in2
0.0929m2
10.76ft2
16.39cm3
0.061m3
28.32dm3
0.035ft3
0.7646m3
1.307yd3
0.4047 hectares 2.471 acres
Capacity 4.4546dm3
0.224 UK gallon
Speed 0.3048m/s 3.28ft/s
0.00508m/s 196.85ft/min
Mass 0.45359kg 2.205lb
1.016 tonne 0.984imperial ton
Density 16.019kg/m3 0.062lb/ft3
Fuel Consumption 0.354km/litre 2.82mpg
Force 91 807N 0.0000108kgf
Energy 3.6 MJ 0.278kWh
1055J 0.239callT
1055J 0.00095btu
105.5MJ 0.0095therm
Power 745.7W 0.00134hp
0.2931W 3.412btu/h
3.517kW 0.284ton refrigeration
746.08W 0.00134hp
Specific Energy 2326J/kg 0.00043btu/Ib
Heat Content (volume basis) 37.259kJ/m3
0.0269btu/ft3
Specific Heat Capacity 4187J/KgK 0.00024btu/lb°f
USEFUL INFORMATION

KEY INDUSTRY CONTACTS
American Society for Heating, Refrigerating & Aircon Engineers (ASHRAE)
T: 0800 962130 www.ashrae.org
Asbestos Removal Contractors’Association (ARCA)
T: 01283 531 126 www.arca.org.uk
Association for Consulting and Engineering (ACE)
T: 0207 222 6557 www.acenet.co.uk
Association for Environment Conscious Building
T: 0845 4569773 www.aecb.net
Association for the Conservation of Energy
T: 0207 359 8000 www.ukace.org
Association of Fire Consultants
T: 08700 114 514 www.afc.eu.com
Association of Noise Consultants
T: 01727 896092 www.association-of-noise-consultants.co.uk
BRE Environmental Assessment Method (BREEAM)
T: 01923 664 000 www.bre.co.uk
British Approvals for Fire Equipment
T: 0208 541 1950 www.bafe.org.uk
British Automatic Sprinkler Association Ltd
T: 01353 659187 www.basa.org.uk
British Council for Offices (BCO)
T: 0207 283 0125 www.bco.org.uk
British Institute of Facilities Management
T: 0845 058 1356 www.bifm.org.uk
British Refridgeration Association
T: 0118 940 3416 www.feta.co.uk/bra
Building Research Establishment (BRE)
T: 01923 664 000 www.bre.org.uk
British Standards Institution
T: 0208 996 9000 www.bsi-global.com
Building Services Research and Information Association (BSRIA)
T: 01344 456 600 www.bsria.co.uk
Climate Change Action Plan
T: 0207 983 4100 www.london.gov.uk
The Carbon Trust
T: 0800 085 2005 www.carbontrust.co.uk
Chartered Institute of Building
T: 01344 630700 www.ciob.org.uk
Chartered Institution of Building Services Engineers
T: 0208 6755211 www.cibse.org
Commissioning Specialists’Association
T: 01403 754133 www.csa.org.uk
Construction Design and Management Regulations 2007 (CDM) – HSE
T: 0745 345 0055 www.hse.gov.uk
Construction Industry Research & Information Association
T: 0207 549 3300 www.ciria.org.uk
Energy Institute
T: 0207 467 7100 www.energyinst.org.uk
Energy Saving Trust
T: 0207 222 0101 www.est.org.uk
Environment Agency
T: 01454 624400 www.environment-agency.gov.uk
Heat Pump Manufacturers Association
T: 0118 940 3416 www.heatpumps.org.uk
Heating and Hot Water Information Council
T: 0845 600 2200 www.centralheating.co.uk
Heating and Ventilating Contractors Association
T: 0207 313 4900 www.hvca.org.uk
HEVAC Association
T: 0118 9403416 www.feta.co.uk/hevac
Institute of Acoustics
T: 01727 848195 www.ioa.org.uk
Institute of Maintenance & Building Management
T: 01252 710994 www.imbm.org.uk
Institute of Swimming Pool Engineers
T: 01603 499959 www.ispe.co.uk
Institution of Engineering and Technology
T: 0207 2401871 www.theiet.org
Institution of Mechanical Engineers
T: 0207 222 7899 www.imeche.org.uk
Institution of Structural Engineers
T: 0207 235 4535 www.istructe.org.uk
Lifetime Homes for Individual and Community Well Being
T: 0207 822 8700 www.lifetimehomes.org.uk
Lift and Escalator Industry Association
T: 0207 935 3013 www.leia.co.uk
The London Plan
T: 0207 983 4100 www.london.gov.uk
National Association of Chimney Engineers
T: 01526 322555 www.nace.org.uk
Royal Institute of British Architects
T: 0207 580 5533 www.riba.org
Royal Institution of Chartered Surveyors
T: 0207 222 7000 www.rics.org
Smoke Control Association
T: 0118 9403416 www.feta.co.uk
Solar Trade Association
T: 01908 442290 www.greenenergy.org.uk/sta
Specification Expert
T: 01344 899280 www.barbour.info
The Climate Group
T: 0207 960 2970 www.theclimategroup.org.uk
UK Thermography Association
T: 01604 630124 www.ukta.org
29nuaire.co.uk
USEFUL INFORMATION

029 2085 820030
NATURAL VENTILATION
Provides low energy ventilation systems, using
the principles of natural mixing ventilation in
the winter and natural upward displacement
in the summer.
MECHANICAL EXTRACT FOR
OFFICES & COMMUNAL AREAS
Extract fans are the simplest form of
ventilation for office and communal
environments.Whether duct, wall, window
or ceiling mounted these fans will extract
moisture from wet rooms and offices to
provide continuous fresh air.
STAIRWELL PRESSURISATION & SMOKE
EXTRACT FOR MULTI-FLOOR
REQUIREMENTS
Nuaire have manufactured smoke and car
park ventilation for over 30 years and a
design service is available to complement the
complete range of smoke pressurisation and
extract fans (duct or roof mounted) for
300/400ºC for 1 & 2 hours, certified to
EN12101-3 2002.
CAR PARK EXTRACT
The comprehensive range of AXUS smoke
fans together with the Impulse car park fan
meets the ever increasing need to provide
smoke extract for car parks.
SMOKE SOLUTIONS
STAIRWELL PRESSURISATION
& SMOKE EXTRACT APPLICATIONS
AXUS SMOKE & AXT
High temperature & ambient axial extract fans
up to 85m3
/s.
ALL BUILDINGS HAVE THEIR OWN UNIQUE REQUIREMENTS FOR VENTILATION. WITH THE
NEW GOVERNMENT GUIDELINES ON ENERGY EFFICIENCY IT IS MORE DIFFICULT TO
MAINTAIN A COMFORTABLE, HEALTHY ENVIRONMENT WHILST PROVIDING AN ENERGY
EFFICIENT SOLUTION.
XS RANGE
Wall, window, ceiling and roof extract fans
(up to 530l/s).
MULTI-ROOM VENTILATION
CONSTANT PRESSURE VARIABLE VOLUME
Twin fan - high performance extract up to
2.65m3
/s.
CONSTANT PRESSURE VOLUME
Control damper - energy efficient volume damper
for use with constant pressure twin fan.
NATURAL VENTILATION
E-STACK (F,A, S & R SERIES UNITS)
Range of low energy systems developed as a
solution for use in new buildings.
TYPICAL APPLICATION

31nuaire.co.uk
XBOXER TAILOR MADE AHUS
23 sizes covering airflow range up to 20m3
/s.
MECHANICAL EXTRACT FOR
OFFICES AND COMMUNAL AREAS
ES-OPUSDC
Energy efficient range of inline,
surface and recessed fans up to
115l/s.
ECOSMART SQURBO
Energy efficient make up air
supply and extract units up to
0.5m3
/s.
XTRACTOR
High efficiency centrifugal fan
up to 6.2m3
/s.
TERMINATOR
Horizontal discharge roof
extract fan.
XBOXER THERMAL WHEELS
Available in 6 sizes up to 10m3
/s.
XBOXER PACKAGED
HEAT RECOVERY
Low depth, high performance
range up to 5m3
/s.
SQUIF RANGE
Run and standby units ideal for
‘out of airstream’ applications
such as commercial kitchens.
Twin fan option.
MRXBOX95 WALL &
LOFT HEAT RECOVERY
High efficiency up to 95%
efficient.
NUAIRE HAS OVER 40,000 PRODUCT LINESTO SELECT FROMWHATEVERYOUR REQUIREMENTS.
WE HAVETHE SOLUTION FROM A SMALL EXTRACT FANTO LARGEAIR HANDLING UNITS.
CAR PARK EXTRACT OPTIONS
IMPULSE HIGH TEMPERATURE EXTRACT
Powerful impulse fan certified to EN12101-3
(300ºC for 2 hours).

029 2085 820032
TEST,
INSTRUMENTATION,
RESEARCH AND
CONSULTANCY
FROM THE BUILT ENVIRONMENTS EXPERTS
2,500m2
UKAS accredited laboratory or on-site testing
Over 50 years of experience and 150 staff
Product and building energy efficiency
Supporting design, installation, operation and maintenance
For independent worldwide services contact BSRIA
t +44 (0) 1344 465600
f +44 (0) 1344 465626
e bsria@bsria.co.uk
www.bsria.co.uk

33nuaire.co.uk
AIR HANDLING UNITS (AHU’S) 33
VENTILATION UNIT TYPE UNIT LOCATION MAX PAGE
PERFORMANCE
OPUSXBOX SUPPLY/EXTRACT 75l/s 34
XBOXER HEAT EXCHANGE SUPPLY/EXTRACT 5.0m3
/s 40
XBOXER 55 SUPPLY/EXTRACT 0.65m3
/s 56
XBOXER HEAT EXCHANGE SUPPLY/EXTRACT 1.7m3
/s 64
TWINFANS
ECOSMART SQURBO SUPPLY/EXTRACT 0.5m3
/s 90
ECOSMART BOXER INLINE SUPPLY/EXTRACT 5.0m3
/s 94
UNDERBENCH CLASSROOM UNIT SUPPLY/EXTRACT 0.3m3
/s 112
XBOXER THERMAL WHEEL SUPPLY/EXTRACT 10m3
/s 114
XBOXER RUN AROUND COIL SUPPLY/EXTRACT 10m3
/s 120
XBOXER CUSTOM SUPPLY/EXTRACT 20m3
/s 140
AIR HANDLING UNITS
BOXER MODULAR SUPPLY SUPPLY 6.0m3
/s 150

029 2085 820034
OPUSXBOX - SMALL COMMERCIAL HEAT RECOVERY SYSTEM
LOW DEPTH, HEAT RECOVERY UNIT WITH MULTIPLE SPIGOTS AND
ECOSMART CONTROLS.

35nuaire.co.uk
AIR HANDLING UNITS (AHU’S)
OPUSXBOX
TECHNICAL INFORMATION
LOW DEPTH 185MM
The shallowest available, ideal for applications
where space is at a premium.
HIGH EFFICIENCY
Heat recovery efficiency in excess of 70% possible,
this together with low watt D.C. motors gives all
round energy savings.
QUIET, COMPACT & POWERFUL
Low noise levels, compact design and a high
performance, provides the perfect engineering
solution.
ECOSMART EFFICIENCY
Supplied with Ecosmart control, providing a simple
to install, easy to commission, energy efficient
solution.
PLUG AND GO
Ecosmart controls and sensors, (please refer to
controls section) simply plug directly into the unit –
supply and extract then respond to the conditions
being monitored.An ES-CI will also be required.
FLEXIBLE SOLUTION
Supply and extract airflows are easily fine tuned
using integral speed adjustment and built in
balancing dampers at each spigot.
QUICK INSTALLATION
A single point fixing bracket with anti-vibration strip
enables quick and easy installation.
LOW MAINTENANCE COSTS
Heat exchanger block and filters are easily removed
from below and cleaned ensuring longer fan life
whilst maintaining efficiencies.
QUIETEST UNIT AVAILABLE
Acoustically lined with advanced impeller
technology, ensuring the quietest system possible.
5 YEAR WARRANTY
For peace of mind.
BENEFITS
opusXbox in
ceiling void
Fresh inlet
Extract Air
Ceiling
Mounted
Extract Grille
Ceiling Grid
Mounted
Supply Diffuser
Exhaust to
outside
TYPICAL INSTALLATION:
Extract fan section and Knockout spigots.
commissioning controls.
OPTIONS INCLUDE:
Easy access to filters. Min and max speed and run
on timer adjustment.

029 2085 820036
PERFORMANCE - OPUSXBOX
OPUSXBOX
OPUSXBOX
Casing
(m3
/hr)
FanStaticPressure(Pa)
50
150
250
350
450
100
200
300
400
Air volume flow rate (l/s)
0 36 72 108 144 180 216 252 288
0 10 20 30 40 50 60 70 80
100%75%
50%25%
0
43
111 2
V
Type D
Air Density 1.2 kg/m3
ISO 5801 2007
AMCA 300
Code descriptions
OPUSXBOX
ELECTRICAL, SOUND & WEIGHT
FLC SC* Sound figures Induct sound power level re 1pW Breakout Weight
Curve Ref W* * (amps) (amps) 125 250 500 1K 2K 4K 8K dBA @3m (Kg)
1 (25%) Supply fan 5 0.05 0.05 Inlet 29 31 28 15 16 7 2 15 25
Outlet 19 26 23 14 8 4 4
Extract fan 5 0.05 0.05 Inlet 18 26 17 7 4 5 5
Outlet 35 39 43 34 34 26 16
2 (50%) Supply fan 17 0.1 0.1 Inlet 45 47 44 31 32 23 15 29
Outlet 35 42 39 30 24 12 9
Outlet 51 55 59 50 50 42 32
3 (75%) Supply fan 51 0.3 0.3 Inlet 55 57 54 41 42 33 25 38
Outlet 45 52 49 40 34 22 19
Outlet 61 65 69 60 60 52 42
4 (100%) Supply fan 120 0.7 0.7 Inlet 62 64 61 48 49 40 32 44
Outlet 52 59 56 47 41 29 26
Outlet 68 72 76 67 67 59 49
*Fans are programmed with a soft start, therefore starting current is the same as the FLC.
Please note step curves shown are for information purposes only and are not individual units.The units actual duty range is infinitely variable.
**W = Watts are total power consumption.
Fixing screw hole.
Bracket tongues engage with casing slots, then unit rotated up to align with fixing screw hole.
Slots in casing either side of unit to allow alternative mounting option.
OPUSXBOX
INSTALLATION

37nuaire.co.uk
OPUSXBOX CONFIGURATIONS
View from underside with cover removed
Download specification from www.nuaire.co.uk/specifications
OPUSXBOX
850
685
637
Bracket
fixing
VIEW FROM UNDERSIDE WITH COVER REMOVED
SIDE VIEW
MOUNTING BRACKET TOP VIEW
Mounting bracket
END VIEW
Single screw unit fixing
185
10
250
4 holes
7.5mm dia.
4 x spigot knockouts. 1 x 125mm dia. and 3 x 100mm dia.
for each supply and extract system
Cable entry 20mm
4 x end spigot
knockouts
100mm dia.
Mains
connection
box
125 dia. 100 dia.
extract extract
100 dia.
extract
100 dia.
extract
100 dia.
supply
100 dia.
supply
125 dia. 100 dia.
supply supply
125 dia.
Intake
125 dia.
discharge
Condensate drain 22mm OD
Weight: 25kg
Junction
box for
sensors etc
Drain
DIMENSIONS (mm) OPUSXBOX
Air Discharge to
outside via
125 dia spigot
Extract fan and
commissioning
controls
Supply fan and
commissioning
controls
Filter
Fresh air inlet
via 125 dia spigot
100 dia spigot
c/w V.C.D
4 x 100mm dia
spigots c/w V.C.D
Filter
125 dia spigot
c/w V.C.D
100 dia spigot
c/w V.C.D
125 dia spigot
c/w V.C.D
Communications
terminal box
Mains voltage
terminal box
Mounting bracket
with A.V. strip
22mm
condensate tray and drain

029 2085 820038
WIRING FOR OPUSXBOX
OPUSXBOX WIRING
N
L
SL
Trickle
Link
DO NOT USE
Pre-wired to
junction box
LVTNETTR
240V 1ph
supply
pre-wired
to terminal
box
Switch live
input
pre-wired
to terminal
box
TEST
Status
30
0
60
Run-on
(mins)
25
100
Max
Airflow
(%)
25
100
Min
Airflow
(%)
Circuit board wiring. Other control wirings are available on each fan.
Open the cover of the unit to gain access to these connections.
The supply and extract fan within the unit are pre-wired to an external wiring
box for ease of connection. All field wiring must be routed through a suitable
local isolator.
Basic wiring. Both supply and extract will run at constant speed.
The fan duty is controlled via the 'Boost' setting.
Trickle and Boost operation. Both supply and extract will run at trickle
and boost speed together. Closing the boost switch will cause both
fans to run at boost setting.
Wiring for independent boost. The supply and extract fan will trickle and boost
independently.
N
L
2
1
L
N
E
230V-50Hz
Factory fitted links
N
L
1
2
3A fuse
Isolator by others
N
L
2
1
L
N
E
230V-50Hz
Remove factory fitted
link from 'L' to '1'
N
L
1
2
3A fuse
Isolator and switch by others
Boost switch
N
L
2
1
L
N
E
230V-50Hz
Remove all factory fitted links
N
L
1
2
3A fuse
Isolator and switches by others
Boost switches
Boost
signal for
extract
fan
Boost
signal for
supply
fan

39nuaire.co.uk
OPUSXBOX
OPUSXBOX
OPERATION
The supply and extract ventilation unit shall be as indicated on the drawings and
shall be in accordance with the particular fan schedule in the specification.
Where a stand alone heater battery it will raise the temperature of the supply air
to the design room temperature after the air has passed through the heat
exchanger.The ventilation unit shall automatically vary the ventilation rate, as it
receives signals from one of the optional interconnected sensors.When signals
are received, the fan shall either vary its speed proportionally or on a trickle and
boost principle.
The unit shall have the facility to commission the supply and extract fans
individually via inbuilt minimum and maximum speed adjustment, the fans
themselves shall have infinitely variable speed control.
OPUSXBOX - UNIT SPECIFICATION
The fans shall be acoustically lined with high density class“O” flame retardant
insulation, giving extremely low noise levels.The unit shall have a heat exchanger
block manufactured from aluminium with a thermal efficiency of approximately
70% which shall be protected by G2 grade filters on supply and extract. It shall
come complete with a condensate drip tray and drain connection, integral
minimum and maximum speed controls, run on timer and facia mounted failure
indication.The breakout noise level and power requirements shall be as detailed
by the unit manufacturer and as detailed in the ventilation equipment schedule.
The unit shall have low energy, high efficiency d.c. fan/motor assemblies with
sealed for life bearings.
The depth of the low profile unit shall not be greater than 185mm and shall
incorporate a low profile single point mounting bracket, with a pre-stressed
synthetic anti vibration strip.
The unit shall be constructed with two removable panels allowing full
maintenance access to all components.
To facilitate the interconnection of branch ducts the unit shall have multiple
spigot connections with integrated balancing dampers. Spigot connections
provided.
OPUSXBOX CONTROL OPTIONS
All versions shall have the following functions integrally mounted within the fan
unit on a purpose made PCB, all such components pre-wired and factory fitted
by the manufacturer: -
• Integral speed control on supply and extract.
• Integral background ventilation control/set point.
• Integral boost ventilation control/set point.
• Integral run on timer.
• Integral S/L terminal for boost from remote switch, e.g. lightswitch.
The fan unit will have a 5 year warranty.
Units shall be the OPUSXBOX as manufactured by Nuaire.
CONSULTANTS SPECIFICATION
Download specification from www.nuairegroup.com/specifications

029 2085 820040
XBOXER HEAT EXCHANGE UNITS
WIDE RANGE OF ENERGY EFFICIENT
HEAT RECOVERY UNITS WITH OPTIONAL INTEGRATED CONTROLS.

41
XBOXER HEAT EXCHANGE
nuaire.co.uk
HIGH EFFICIENCY
Heat exchanger efficiency of up to 70%, alongside
high efficiency motors and backward curved
impellers.
ENERGY EFFICIENT CONTROLS
Full Ecosmart control compatibility provides a
simple‘plug & go’ control solution with BMS
interface and trickle and boost as standard.
NO CONTROL OPTION AVAILABLE
Now available on all sizes.
SPACE SAVING SOLUTIONS
Stacked or horizontal units, provide the most
effective solution.
QUIETEST SOLUTION
Units are double skinned keeping breakout noise to
the lowest possible levels.
Optional acoustic enclosure available.
WIDE RANGE
Horizontal, stacked and twinfan options available
up to 5m3
/s.
QUICK COMMISSIONING
Integrated supply and extract fan allows precise
system duty can be quickly and accurately set.
(Ecosmart models only).
EASY INSTALLATION
All XB models (sizes 2 - 6) are supplied in one piece.
XBH and XBV models (sizes 6, 7, 8, 9 & 10) are
supplied in 3 sections (unless otherwise specified)
for delivery, ready for site assembly.
EASY MAINTENANCE
Left or right hand options (in direction of airflow) –
will provide full access to components. For access
requirements contact Nuaire.
INTEGRATED SUMMER BYPASS
Operates automatically via integrated factory set
temperature sensors.
WEATHERPROOF DETAIL
Can be factory or fitted on site, please
refer to page 53 for details.
Note: weather proof enclosure for XB2 -
XB5 is supplied as a separate component.
ADVANCED CONDENSATE REMOVAL
Miniature condensate pump option, for applications
where the distance to discharge is great. Pump also
enables a‘micro bore’ type pipe to be used.
FILTER OPTIONS
G4 fitted as standard. Higher grade integrated
filters available. Duct mounted ancillary also
available.
DX COIL OPTION AVAILABLE
Please contact Nuaire.
CONSTANT PRESSURE CONTROL
AVAILABLE
For further details please contact Nuaire.
HEATER BATTERY OPTIONS
Unit with integral battery, LPHW or electric.
ANCILLARIES
A range of ancillaries are available
including manometers, bulkhead lights, view ports,
drain trays & traps.
5 YEAR WARRANTY
On Ecosmart models for peace of mind.
No control models have a 2 year warranty. Contact
Nuaire for details.
BENEFITS
FEATURES INCLUDE:
Constant Pressure control option. Filter option. Bottom access available (XB2-5).
With electric heater. With LPHW.

029 2085 820042
PERFORMANCE - XBOXER HEAT EXCHANGE
XBOXER Horizontal sizes: (XB2-5) and (S1-XB and S6-XB) and stacked sizes (S2-5 XBV)
100
200
300
400
500
600
Air volume ﬂow rate (m /s)3
0 720 1440 2160 2880
(m3
/hr)
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
700
3
6
5
0
XB55
V
Type D
ISO 5801 2007
AMCA 300
2
4
1
0
100
200
300
400
500
600
0 3600 7200 10800 14400 18000
0 1 2 3 4 5
(m3
/hr)
6
998
7
Full
speed
Full
speed
80%
speed
75%
speed
V
Type D
ISO 5801 2007
AMCA 300
10
7
Casing
Code descriptions
1. Xboxer (S1-XB or XB2-5 or S6XB
or S2-5 XBV)
2. Curve ref.
3. Component layout
L = Left hand
R = Right hand
4. Type of heater battery fitted
N= No heater
L = LPHW
E = Electric
5. 1 = 1 row coil or 2 = 2 row coil
6. Optional Acoustic Enclosure
(sizes XB2 - 5 only)
*For coil options please see page 74.
XB2 - R L 2 AE
| | | | | |
1 2 3 4 5 6
Casing
Code descriptions
S6NC - XBV - R L 3 WP
| | | | | | |
1 2 3 4 5 6 7
1. Curve Ref. (S6-10XBH) or S6-10XBV
2. Ecosmart control as standard
NC = No control (sizes 1 - 10)
3. Xboxer (XB/H or XBV)
4. Component layout
L = Left hand
R = Right hand
Handings in direction of supply air.
5. Type of heater battery fitted
N= No heater
L = LPHW
E = Electric
6. 1 = 1 row coil or 2 = 2 row coil
7. Optional weather proof kit
*For coil options please see page 74.
XBOXER Horizontal sizes: (S6-10 XBH) and stacked sizes: (S6-10 XBV)
Note: refer to page 56 for XB55 horizontal unit for internal mounting only.

43nuaire.co.ukDownload specification from www.nuaire.co.uk/specifications
PERFORMANCE - XBOXER HORIZONTAL XB AND XBH AND STACKED XBV
ELECTRICAL, SOUND & WEIGHT
Motor Start Full load Electric Heater LPHW Breakout
power current current Heater FLC Heater Induct Sound Power Levels dB re 1pW dBA Weight
Curve Code Phase watts (amps) (amps) (kW) (amps) (kW) 63 125 250 500 1K 2K 4K 8K @3m (Kg)
1 S1-XB-** 1 172 1.28 1.28 - 1.28 * Intake 60 55 54 47 41 37 33 29 33 75
Supply 64 67 63 59 62 60 57 53
Discharge 68 69 64 61 62 60 56 51
Extract 61 60 56 48 41 37 32 28
2 XB2-** 1 270 1.7 1.7 4.5 18.7 * Intake 71 71 69 66 62 54 52 49 34 153
Supply 64 64 64 62 57 57 40 28
Discharge 67 70 65 69 60 59 56 49
Extract 60 62 53 50 47 37 29 25
2 S2-XBV-** 1 270 1.7 1.7 4.5 18.7 * Intake 69 69 67 68 63 59 58 54 36 90
Supply 67 65 63 57 55 58 44 33
Discharge 67 70 65 67 61 55 55 51
Extract 59 60 58 52 48 47 42 34
3 XB3-** 1 410 1.9 1.9 4.5 18.7 * Intake 75 75 73 70 66 58 56 53 36 153
Supply 68 68 68 66 61 61 44 32
Discharge 71 74 69 73 64 63 60 53
Extract 64 66 57 58 51 41 33 29
3 S3-XBV-** 1 410 1.9 1.9 4.5 18.7 * Intake 73 73 71 72 67 63 62 58 38 90
Supply 71 69 67 61 59 62 48 37
Discharge 71 74 69 71 65 59 59 55
Extract 63 64 62 56 52 51 46 38
4 XB4-** 1 423 2.8 2.8 4.5 18.7 * Intake 76 75 71 70 69 60 57 53 36 155
Supply 64 62 63 61 59 56 46 36
Discharge 74 73 70 73 70 68 63 56
Extract 67 63 55 57 54 45 37 30
4 S4-XBV-** 1 423 2.8 2.8 4.5 18.7 * Intake 74 73 69 72 70 65 63 58 39 94
Supply 67 63 62 57 57 57 50 41
Discharge 74 73 70 72 71 64 62 58
Extract 66 61 60 55 55 55 50 39
5 XB5-** 1 690 3.6 3.6 4.5 18.7 * Intake 80 79 75 74 73 64 61 57 38 155
Supply 68 66 67 65 63 60 50 40
Discharge 78 77 74 77 74 72 67 60
Extract 71 67 59 61 58 49 41 34
5 S5-XBV-** 1 690 3.6 3.6 4.5 18.7 * Intake 78 77 73 76 74 69 67 62 43 94
Supply 71 67 66 61 61 61 54 45
Discharge 78 77 74 76 75 68 66 62
Extract 70 65 64 59 59 59 54 43
6 S6-XB-** 1 850 6 6 6 25 * Intake 82 86 80 68 67 64 57 51 47 212
Supply 76 79 76 67 62 59 50 40
Discharge 85 86 80 74 72 68 61 54
Extract 77 80 73 64 59 55 47 44
6 S6-XBH-** 1 980 6 6 6 25 * Intake 76 79 76 67 62 59 50 40 39 595
3 12 16.7 Supply 82 86 80 68 67 64 57 51
S6-XBV-** 1 980 6 6 6 25 * Discharge 77 80 73 64 59 55 47 44
3 12 16.7 Extract 85 86 80 74 72 68 61 54
7 S7-XBH-** 3 4.400 kW 9 9 27 38 * Intake 75 77 76 74 68 67 65 56 47 630
S7-XBV-** Supply 81 81 83 84 78 77 75 66
Discharge 76 71 73 79 72 69 67 53
Extract 80 83 86 79 74 75 73 69
8 S8-XBH-** 3 4.400 kW 9 9 54 75 * Intake 78 82 79 77 71 72 72 58 50 954
S8-XBV-** Supply 84 87 86 87 81 82 82 68
Discharge 79 76 76 82 75 74 74 55
Extract 83 89 89 82 77 80 80 71
9 S9-XBH-** 3 8.000 kW 17 17 - - * Intake 84 77 76 78 74 69 64 52 46 1517
S9-XBV-** Supply 89 84 84 84 85 80 74 66
Discharge 84 77 74 79 79 72 66 53
Extract 89 84 86 83 80 77 72 65
10 S10-XBH-** 3 11.000 kW 22 22 - - * Intake 86 79 81 80 75 71 66 56 48 1930
S10-XBV-** Supply 92 87 90 87 86 82 75 70
Discharge 87 80 80 82 80 74 67 57
Extract 91 86 91 85 81 79 74 69
Units are supplied c/w with 2 No.G4 filters as standard. F5 & F7 filters are available as integrated options on supply.
Motor power and current loads are the total for both fans running together. Unit has a soft start function therefore the starting current is identical to the full load.
** Add relevant code for handing and heater type.
* For details on coils, codes and selection please refer to page 74.
Note: Size 6 - 1 phase = supply for fan, 3 phase = supply for electric heater battery.

029 2085 820044
DIMENSIONS AND CONFIGURATIONS
XBOXER Horizontal size S1-XB
DIMENSIONS (mm)
Code A B C D
S1-XB 1361 1000 340 250
Model shown: S1-XB-RL (right hand with LPHW).Model shown: S1-XB-LL (left hand with LPHW).
Model shown: S1-XB-LN (left hand with no heater). Model shown: S1-XB-RN (right hand with no heater).
Filter Heat Exchanger LPHW Coil
Filter
A
B
C
D

45nuaire.co.uk
XBOXER Horizontal sizes XB2, 3, 4, 5 and S6-XB
DIMENSIONS (mm)
Code A B C D
XB2 1700 1150 340 315
XB3 1700 1150 340 315
XB4 1700 1150 340 315
XB5 1700 1150 340 315
S6-XB 1700 1150 700 500
Model shown: XB2-5-LL (left hand with LPHW).
For weatherproof cowls refer to page 53
A
B
C
D
Model shown: XB2-5 and S6-XB-LE (left hand with electric heater).Model shown: XB2-5 and S6-XB-RE (right hand with electric heater).
Model shown: XB2-5 and S6-XB-LN (left hand with no heater). Model shown: XB2-5 and 6-XB-RN (right hand with no heater).
Model shown: XB2-5 and S6-XB-LL (left hand with LPHW). Model shown: XB2-5 and S6-XB-RL (right hand with LPHW).

029 2085 820046
XBOXER Horizontal size S6-XHB
DIMENSIONS (mm)
Code A B C D
S6-XBH 2800 2000 530 400
Model shown: S6-XBH-LL (left hand with LPHW).
Model shown: S6-XBH-RE (right hand with electric heater).Model shown: S6-XBH-LE (left hand with electric heater).
Model shown: S6-XBH-LN (left hand with no heater).
Note: Control box is integral.
Model shown: S6-XBH-RN (right hand with no heater).
Model shown: S6-XBH-LL (left hand with LPHW). Model shown: S6-XBH-RL (right hand with LPHW).
A
B
C
D
Filter
LPHWSupply Fan Heat Exchanger
Extract Fan
Filter
For weatherproof cowls refer to page 53

47nuaire.co.uk
XBOXER Horizontal sizes S7 and 8-XHB
DIMENSIONS (mm)
Code A B C D E F G H
S7-XBH 2600 1600 800 1200 600 800 600 350
S8-XBH 3800 2000 1000 2200 600 1000 600 450
Model shown: S7-8-XBH-LL (left hand with LPHW).
Model shown: S7-8-XBH-RE (right hand with electric heater).Model shown: S7-8-XBH-LE (left hand with electric heater).
Model shown: S7-8-XBH-LN (left hand with no heater). Model shown: S7-8-XBH-RN (right hand with no heater).
Model shown: S7-8-XBH-LL (left hand with LPHW). Model shown: S7-8-XBH-RL (right hand with LPHW).
30
30
30
30
A
B
C
D
E
F
G
H
Filter
LPHWSupply Fan
Heat Exchanger
Control
Extract Fan
Filter

029 2085 820048
XBOXER Horizontal sizes S9 and 10-XHB
DIMENSIONS (mm)
Code A B C
S9-XBH 4600 2600 1000
S10-XBH 4600 2600 1300
Model shown: S9/10-XBH-LL (left hand with LPHW).
Model shown: S9/10-XBH-LN (left hand with no heater). Model shown: S9/10-XBH-RN (right hand with no heater).
Model shown: S9/10-XBH-LL (left hand with LPHW). Model shown: S9/10-XBH-RL (right hand with LPHW).
30
30
30
30
A
B
C
Filter
LPHWSupply Fan Heat ExchangerControl
Extract Fan
Filter

49nuaire.co.uk
XBOXER Stacked sizes S2, 3, 4 and 5-XBV
DIMENSIONS (mm)
Code A B C D
S2-XBV 2500 550 820 250
S3-XBV 2500 550 820 250
S4-XBV 2500 550 820 250
S5-XBV 2500 550 820 250
Model shown: S2-5-XBV-LL (left hand with LPHW).
Model shown: S2-5-XBV-RE (right hand with electric heater).Model shown: S2-5-XBV-LE (left hand with electric heater).
Model shown: S2-5-XBV-LN (left hand with no heater). Model shown: S2-5-XBV-RN (right hand with no heater).
Model shown: S2-5-XBV-LL (left hand with LPHW). Model shown: S2-5-XBV-RL (right hand with LPHW).
A
B
C
D
Filter Control Box Heat Exchanger
LPHW
Extract Fan
FilterSupply Fan

029 2085 820050
XBOXER Stacked size S6-XBV
DIMENSIONS (mm)
Code A B C D
S6-XBV 2000 954 1060 400
Model shown: S6-XBV-LL (left hand with LPHW).
Model shown: S6-XBV-RE (right hand with electric heater).Model shown: S6-XBV-LE (left hand with electric heater).
Model shown: S6-XBV-LN (left hand with no heater).
Note: control box is integral.
Model shown: S6-XBV-RN (right hand with no heater).
Model shown: S6-XBV-LL (left hand with LPHW). Model shown: S6-XBV-RL (right hand with LPHW).
A
B
C
D
LPHW connections
Filter Fan + Control Heat Exchanger
LPHW
Supply Fan
+ Control
Filter

51nuaire.co.uk
XBOXER Stacked sizes S7 and 8-XBV
DIMENSIONS (mm)
Code A B C
S7-XBV 2600 800 1600
S8-XBV 3800 1000 2000
Model shown: S7-8-XBV-RE (right hand with electric heater).Model shown: S7-8-XBV-LE (left hand with electric heater).
Model shown: S7-8-XBV-LN (left hand with no heater). Model shown: S7-8-XBV-RN (right hand with no heater).
B
30
30
A
C
LPHW
Supply Fan
+ Control
Filter

029 2085 820052
XBOXER Stacked sizes S9 and 10-XBV
DIMENSIONS (mm)
Code A B C D E
S9-XBV 4300 1300 2000 479 557
S10-XBV 4300 1300 2600 638 638
Model shown: S9-10-XBV-LN (left hand with no heater).
Note: control box is integral.
Model shown: S9-10-XBV-RN (right hand with no heater).
B
30
30
A
C
D
E
LPHW
Supply Fan +
Control
Filter

53nuaire.co.uk
FACTORY FITTED WEATHERPROOF KIT
Horizontal (size 6 - 10)
XBOXER WEATHERPROOF KITS
AB
Up to
100mm
WEATHERPROOF KIT FOR ON-SITE FITTING
Stacked (size 2 - 10)
Horizontal (size 6 - 10)
Code descriptions
1. Size of XBOXER unit
2. XBH = Horizontal unit
XBV = Stacked unit
3. LE = Left hand, electric
RE = Right hand, electric
LL = Left hand, LPHW
RL = Right hand, LPHW
LN = Left hand, no heater
RN = Right hand, no heater
4. Weatherproof kit fitted to unit
and delivered to site
S7 - XBH - LE WP
| | | |
1 2 3 4
Code descriptions
1. SXBH = Horizontal unit
SXBV = Stacked unit
2. Size of XBOXER unit
3. LE = Left hand, electric
RE = Right hand, electric
LL = Left hand, LPHW
RL = Right hand, LPHW
LN = Left hand, no heater
RN = Right hand, no heater
4. Weatherproof kit for on-site
fitting
SXBH - 7 - LE WP
| | | |
1 2 3 4
Note: Dimension A = equals the length of XBOXER unit selected from
this brochure.
B = equals the width of XBOXER unit selected from this brochure.
Height of weatherproof kit is up to 100mm.
For twin fan Weather Kit use codes SXB - HTWP (Horizontal
sizes 2 - 5) and SXB - VTWP (Stacked sizes 2 - 5).
DIMENSIONS FOR WEATHERPROOF KITS
Stacked (size 2 - 10)

External
access
both sides
C
D
E
View from side
View from top
A
Base
frame
Ducts to
treated
space
(by others)
Vermin mesh
guard (can be
removed and cut
for duct access).
View from end
B
029 2085 820054
WEATHER PROTECTION FOR XBOXER HORIZONTAL UNIT
Sizes XB2 - 5 and XB6
XBOXER WEATHER PROTECTION
DIMENSIONS (mm)
Unit Code Unit size A B C D E Weight (Kg)
SXB-WP 2 - 5 2400 1400 530 100 1800 65
SXB6-WP 6 2400 1400 880 100 1800 79
DIMENSIONS (mm)
• Weatherproof construction
• Can be retro fitted on site (Please contact Nuaire)
• Complete with bird/vermin mesh and internal airflow divider
• Available in 2 sizes
Note:The enclosure above is supplied as a separate component as standard.
Code example for on-site fitting
SXB - WP
Code example for factory fitting
XB2 - LEWP

DIMENSIONS (mm)
Unit Code Unit size A B C Weight (Kg)
XB2-5 2 - 5 1800 1450 470 298
55nuaire.co.uk
ACOUSTIC ENCLOSURE FOR XBOXER HORIZONTAL UNIT
Sizes XB2 - 5
XBOXER ACOUSTIC ENCLOSURE
The additional breakout reduction of a standard 25mm double
skinned pentapost enclosure (close coupled to the unit inside)
is as shown below.
BREAKOUT REDUCTION
Frequency (Hz)
125 250 500 1K 2K 4K 8K
Sound reduction
index Db 8 14 21 23 24 23 19
It is recommended the Acoustic Enclosure (see code example below) be ordered with the
XBOXER unit and fitted at the factory.
Code example for factory fitting
XB2 - RL - AE
A B
C

029 2085 820056
XB55 HEAT EXCHANGE UNITS
ENERGY EFFICIENT HEAT RECOVERY UNITS WITH SPECIALIST
ACOUSTIC TREATMENT PROVIDING LOW NOISE LEVELS.

57nuaire.co.uk
QUIETEST SOLUTION
Units are double skinned with specialist acoustic
treatment keeping breakout noise to the lowest
possible levels. Designed to meet BB101 & BB93.
ENERGY EFFICIENT CONTROLS
Full Ecosmart control compatibility provides a
simple‘plug & go’ control solution with BMS
interface and trickle and boost as standard.
SPACE SAVING SOLUTION – LOW
PROFILE
Installed horizontally where space is a premium,
depth is 470mm.
GUARANTEED LOW COST VENTILATION
& HEATING
Optional full re-circulation on start up ensures that
the room is quickly and efficiently heated.
QUICK COMMISSIONING
Integrated supply and extract fan allows precise
system duty can be quickly and accurately set.
(Ecosmart models only.
NO CONTROL OPTION AVAILABLE
Allowing for controls by others for integration into
a specific BMS system.
ANCILLARIES
A range of ancillaries are available including room
mounted CO2 temperature sensors, and matched
silencers.
EASY MAINTENANCE
Left or right hand options (in direction of airflow) –
will provide full access to components.
For access requirements contact Nuaire.
INTEGRATED SUMMER BYPASS
Operates automatically via integrated factory set
temperature sensors.
ADVANCED CONDENSATE REMOVAL
Miniature condensate pump option, for applications
where the distance to discharge is great. Pump also
enables a‘micro bore’ type pipe to be used.
FILTER OPTIONS
G4 fitted as standard. Higher grade integrated filters
available. Duct mounted ancillary also available.
DX COIL OPTION AVAILABLE
Please contact Nuaire.
CONSTANT PRESSURE CONTROL
AVAILABLE
HEATING COIL OPTIONS
Unit supplied with integral electric , LPHW or
cooling coil variations.
5 YEAR WARRANTY
On Ecosmart models for peace of mind.
No control models have a 2 year warranty.
Contact Nuaire for details.
BENEFITS
FEATURES INCLUDE:
Integrated supply and extract fans. CO2 Sensors: ES-CO2RM Constant Pressure control option. Filter option.
(for Ecosmart) and CO2RM
(for non-Ecosmart).

029 2085 820058
PERFORMANCE
XB55 Heat Recovery Unit
ELECTRICAL & SOUND
900
800
700
600
500
400
300
200
100
0
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7
V
Type D
ISO 5801 1997
AMCA 300
Product Electrical data Summary of sound power levels Free field
Code Freq/ Hz hemisherical
63 125 250 500 1K 2K 4K 8K rad. dBA@3m
FLC/ A SC/ A Input power/kW Operation Induct Sound power levels
XB55-**** 6.9 6.9 1.1 Fresh air intake Induct Inlet 83 81 81 73 66 60 60 61
Supply Induct Outlet 83 77 74 65 59 55 47 36
Extract Induct Inlet 80 74 75 64 63 57 47 37
Discharge Induct Outlet 87 81 85 71 72 70 66 61
Breakout 71 65 60 49 45 42 40 26 38
Casing
Code descriptions
1. XBOXER
2. 55 = unit
3. Ecosmart as standard
NC = No control
4. Component layout
L = Left hand
R = Right hand
Handings in direction of supply air
5. Type of heater battery
N = No heater
L = LPHW
E = Electric
6. 1 = 1 row coil
XB55NC - L L 1
| | | | | |
1 2 3 4 5 6
XB55 - L version
Air volume flow rate at 0.6m3
/s Air volume flow rate at 0.4m3
/s
Water Water Coil Air Air kW Water Water Water Water Coil Air Air kW Water Water
in out Ref on off flow l/s dp KPA in out Ref on off flow l/s dp KPA
82 71 L1 -3 18 17 0.37 19 82 71 L1 -3 23 13.5 0.30 13.5
82 71 L1 3 23 15 0.34 16 82 71 L1 3 27 12 0.27 11
82 71 L1 9 27 13.8 0.31 13.5 82 71 L1 9 31 11 0.25 9
82 71 L1 15 32 12 0.28 11 82 71 L1 15 35 10 0.22 7.4
80 60 L2 -3 15 14 0.17 4.8 80 60 L2 -3 19 11.6 0.14 3.2
80 60 L2 3 19 13 0.16 3.9 80 60 L2 3 23 10.5 0.13 2.6
80 60 L2 9 24 11.5 0.14 3.2 80 60 L2 9 27 9 0.11 2.1
80 60 L2 15 28 10 0.12 2.5 80 60 L2 15 31 8 0.10 1.7
60 40 L2 -3 9 9.6 0.12 2.3 60 40 L2 -3 12 7.8 0.09 1.6
60 40 L2 3 14 8.2 0.10 1.8 60 40 L2 3 16 6.7 0.08 1.2
60 40 L2 9 18 7 0.08 1.3 60 40 L2 9 20 5.6 0.07 0.9
60 40 L2 15 22 5.6 0.07 0.9 60 40 L2 15 24 4.5 0.05 0.6
XB55 - COIL INFORMATION
*Please note above tables are based on indicative selections. For more specific selection, contact Nuaire.
XB55 - L2 version
Air volume flow rate at 0.2m3
/s
Water Water Coil Air Air l/h Water Water
in out Ref on off kW flow l/s dp KPA
82 71 L3 -3 31 13.8 0.31 20
82 71 L3 3 52 12.6 0.28 17
82 71 L3 9 54 11.4 0.25 14
82 71 L3 15 56 10 0.23 12
80 60 L4 -3 44 12.5 0.15 5.7
80 60 L4 3 47 10 0.14 4.7
80 60 L4 9 49 10 0.12 4
80 60 L4 15 51 9 0.11 3
60 40 L4 -3 30 8.8 0.11 3
60 40 L4 3 33 7.7 0.09 2.4
60 40 L4 9 35 6.6 0.08 1.83
60 40 L4 15 37 5.5 0.07 1.3
Connectionsize
15
mm
15
mm
15
mm
Note:Air performance shown is for unit with "high duty" DX coil.

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