NuAire BPS H-AT User manual

1
26. 01. 22. Document Number 671829
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
BPS H-AT
Horizontal Boxer Packaged Solution
with Adapt Trend (AT) Control
Installation Manual
1.0 SAFETY INFORMATION
• The provision of the electrical supply and the connection of the unit to the mains must be
carried out by a qualified electrician.
• Isolate from power supply before removing any covers. During installation / maintenance ensure
all covers are fitted before switching on the mains supply.
• All-pole disconnection from the mains as shown in the wiring diagram must be incorporated
within the fixed wiring and shall have a minimum contact separation of 3mm in accordance with
latest edition of the wiring regulations.
• This unit must be earthed.
• Ducting must be securely fixed with screws to the spigot to prevent access to live parts. Duct
runs terminating close to the fan must be adequately protected by suitable guards.
• If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or
similarly qualified persons in order to avoid a hazard.
• Precautions must be taken to avoid the back-flow of gases into the room from the open flue of
gas or other fuel-burning appliances.
• This appliance should not be used by children or persons with reduced physical, sensory or
mental capabilities or lack of experience and knowledge, unless they have been given supervision
or instruction concerning the safe use of the appliance by a person responsible for their safety.
Children shall not play with the appliance. Cleaning and user maintenance shall not be carried
out by children.
1.1 Symbols
GENERAL WARNING
Signifies a general warning regarding hazard specified by supplementary information.
ELECTRIC SHOCK
This unit must be completely electrically isolated before any panels are removed. Check
mains supply and control connections.
ROTATING PARTS
This unit contains fast moving rotational parts which may start automatically. It is the
sole responsibility of the installer to adequately guard these components.
REFER TO INSTRUCTION MANUAL
Read and understand the installation and maintenance manual before installing,
operating or maintaining this product.

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26. 01. 22. Document Number 671829
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
BPS H-AT
Installation Manual
1.2 Important Information
This manual contains important information on the safe and
appropriate assembly, transport, commissioning, operation,
maintenance, disassembly and simple troubleshooting of the product.
While the product has been manufactured according to the accepted
rules of current technology, there is still a danger of personal injury or
damage to equipment if the following general safety instructions and
the warnings contained in these instructions are not complied with.
•Read these instructions completely and thoroughly before
working with the product.
•Keep these instructions in a location where they are accessible
to all users at all times.
•Always include the operating instructions when you pass the
product on to third parties.
1.3 Personal Protective Equipment
The following minimum Personal Protective Equipment (PPE) is
recommended when interacting with Nuaire products:
•Protective Steel Toed Shoes - when handling heavy objects.
•Full Finger Gloves (Marigold PU800 or equivalent) - when
handling sheet metal components.
•Semi Fingerless Gloves (Marigold PU3000 3DO or equivalent)
- when conducting light work on the unit requiring tactile
dexterity.
•Safety Glasses - when conducting any cleaning/cutting operation
or exchanging filters.
•Reusable Half Mask Respirators - when replacing filters which
have been in contact with normal room or environmental air.
Nuaire would always recommend a site specific risk assessment by a
competent person to determine if any additional PPE is required.
2.0 INTRODUCTION
The information contained in this document provides details of
installation, operation and maintenance for installers and users of the
BOXER PACKAGED SOLUTION (BPS) AHU units with heat recovery.
The BPS AHU range, is manufactured from Aluzinc corrosion resistant
steel, with 50mm double skinned panels and anodized aluminium
frame of a totally thermally-broken design, complying with the
following specification in accordance with BS EN 1886: Mechanical
strength, D1; Leakage class, L1; Thermal transmittance, T2; Thermal
bridging, TB1.
This range includes high efficiency centrifugal fans with EC motors, a
plate heat exchanger, G4 pre-filtration and F7 main filtration of the
supply air and M5 filtration of the extract air.
Optional heating (LPHW, Electric or Reverse Cycle DX) and cooling
(Chilled Water or Reverse Cycle DX) model variants are available. The
Reverse Cycle coils are supplied as standard with inbuilt PAC Control
and optional matched Mitsubishi Mr Slim Condenser(s). Note: control
wiring and piping by others, thermistor wiring (included). Installation
must be carried out by F-Gas approved installer.
Ancillaries include but not limited to attenuators, dampers, weather
terminals and frost modules are available from Nuaire.
These units are supplemented with the Adapt Trend (AT) control
platform. General information regarding performance and specification
for the equipment is available via our technical literature, and/or
project specific documentation.
2.1 Code Description:
B 8 15 H / L R / AT - L
| | | | | | | |
1 2 3 4 5 6 7 8
1. Range: B = Boxer Packaged Solution
2. ErP Compliance Year: 6= 2016
8 or No Affix = 2018
3. Unit Size: 05, 10, 15 or 20
4. Heat Recovery Type: H = Horizontal Plate Exchanger
5. Heating Type: E= Electric
L = Low Pressure Hot Water (LPHW)
N = No Heating
6. Cooling Type: C= Chilled Water (CW)
N = No Cooling
R= Reverse Cycle DX (matched
condenser available)
X= Reverse Cycle DX (condenser unit
and controls by others)
7. Control Type: AT = Adapt Trend
8. Access Handing L = Left Hand
(in direction of supply R = Right Hand
airflow)

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26. 01. 22. Document Number 671829
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
BPS H-AT
Installation Manual
3.0 OPTIONAL ANCILLARIES
1a
Plate Heat
Exchanger
Control
Section
Supply
Module
Electric
Heater
LPHW, DX
or CHW
Filter
4
56
7
Extract
Module
2 or 3
1
Filter
I
N
T
AKE
/
EX
H
AUS
T
S
UP
PL
Y
/
E
X
T
RACT
1 Typical Optional Ancillaries
Model shown is right hand
Quick Selection Guide BPS BOXER PACKAGED AHU’s - ANCILLARIES
BPS Unit
Module Part Number Description
Attenuator
1
B**AH/AR900-R BPS size **. Attenuator for Supply/Extract, Right Handed, for Horizontal PHX Units.
B**AH/AR900-L BPS size **. Attenuator for Supply/Extract, Left Handed, for Horizontal PHX Units.
Attenuator
1a
B**AH/AA900-R BPS size **. Attenuator for Intake/Exhaust, Right Handed, for Horizontal PHX Units.
B**AH/AA900-L BPS size **. Attenuator for Intake/Exhaust, Right Handed, for Horizontal PHX Units.
Frost Coil - Electric
2
B**AH/FE-R BPS size **. Frost Coil Electric, 36kW, Right Handed, for Horizontal PHX Units.
B**AH/FE-L BPS size **. Frost Coil Electric, 36kW, Left Handed, for Horizontal PHX Units.
Frost Coil - LPHW
3
B**AH/FL-R BPS size **. Frost Coil LPHW, Right Handed, for Horizontal PHX Units.
B**AH/FL-L BPS size **. Frost Coil LPHW, Left Handed, for Horizontal PHX Units.
Recirculation Module
4
B**AH/RM-R BPS size **. Recirculation Module, Right Handed, for Horizontal PHX Units.
B**AH/RM-L BPS size **. Recirculation Module, Left Handed, for Horizontal PHX Units.
Weather Terminal
5B**AH/RT BPS size **. WeatherTerminal, for Horizontal PHX Units.
Inlet/Outlet Damper
6B**AH/D BPS size **. Inlet/Outlet Dampers suitable for right or left handed Horizontal PHX Units.
Weather Terminal &
Inlet/Outlet Damper
7
B**AH/RTD-R BPS size **. WeatherTerminal & Damper, Right Handed, for Horizontal PHX Units.
B**AH/RTD-L BPS size **. WeatherTerminal & Damper, Left Handed, for Horizontal PHX Units.
** Insert one of the following for the relevant BPS unit.

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26. 01. 22. Document Number 671829
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
BPS H-AT
Installation Manual
4.0 DELIVERY & RECEIPT OF EQUIPMENT
All equipment is inspected prior to despatch and leaves the factory in
good condition. Upon receipt of the equipment an inspection should be
made and any damage indicated on the delivery note.
Particulars of damage and/or incomplete delivery should be endorsed
by the driver delivering the goods before offloading by the purchaser.
No responsibility will be accepted for damage sustained during the
offloading from the vehicle or on the site thereafter.
All claims for damage and/or incomplete delivery must be reported to
Nuaire within two days of receipt of the equipment.
4.1 Unit Offloading and Handling
The weight of unit modules and palletised items is displayed on the
packaging. Some of the modules have an uneven weight distribution
and this will be indicated by labelling where appropriate.
Offloading and positioning of the equipment is the responsibility of
the purchaser, and should only be performed by competent personnel
following an appropriate risk assessment.
To ensure that the delivery vehicle is loaded according to the
planned method of offloading, Nuaire must be notified to ensure
coordination. When offloading, care must be taken to ensure that the
AHU is kept level at all times.
To ensure that no roof damage occurs additional timber packaging
must be used.
4.2 Base Frame Lifting Points
When units are constructed of multiple modules each module will have
it’s own individual base frame, which is then connected to the next to
assemble the full system. Only individual modules should be lifted
or manoeuvred. The units must not be lifted or manoeuvred pre-
assembled.
All base frame sections will have 50mm square lifting holes at the
end of each side to enable lifting. In addition to this, covered fork
lifting channels are located across the width of the base frame, if the
module length is sufficient to allow this. For shorter modules the fork
lifting points will be along the length of the section, without a covered
channel (Figure 3).
Palletised. Forklift.
Assembly with
base frame.
2 Typical Methods of Lifting
Slings via spreaders fitted to
unit with base frame.
4.3 Unit Packaging
Unless otherwise specified, unit sections will be delivered to site
covered in “shrink wrap” polythene, which should provide a more than
adequate level of protection against inclement weather.
Should alternative methods of unit protection be required (i.e. timber,
Corex, or flame retardant materials), Nuaire Limited should be notified
of the specific requirements at the pre- contract stage. Waste must
be disposed of by a registered waste carrier in accordance to national
regulations.
4.4 Unit Storage
The equipment must be stored in a dry, internal location. Ductwork
connection apertures should be sealed against the ingress of dust,
water and vermin. Note that units that are intended for external
locations are generally not fully weatherproofed until their installation,
including ductwork connections, is complete.
If the storage period is to exceed two months, contact Nuaire for
guidance on the appropriate ‘mothballing’ procedures. Do not stack
units, modules or components.
3 Base Frame Detail
Section length Section lengthSection length
50.0
Section width
50.0
50.0
50.0
50.0
100.0
100.0
100.0
150
Overall unit length
A (1:5)
50.0
50.0
50mm x 50mm Lifting hole
CENTRE SUPPORT CAN BE ON EITHER SIDE OF CENTRE LINE
A

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26. 01. 22. Document Number 671829
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
BPS H-AT
Installation Manual
5.0 UNIT ACCESS
Easily removable
blowers for
maintenance
Access to built-in controls
Interchangeable filters
slide in and out
Hinged or removable
access panels
Access to
Plate Heat Exchanger
Access to interchangeable coils, LPHW
heater and chilled water cooling option
8mm outside diameter
condensate drain.
Condensate pump
fitted as standard
(where necessary).
4 Unit Access
In this product range, several unique concepts have been
implemented with a view to simplifying the installation design.
•The unit must be installed with at least 600mm clearance from a
wall/barrier. With this absolute minimum clearance, the unit may
be connected to the power supply and control connection.
•With this clearance, unit filters may be changed, and the fans
coils, heat exchanger and condensate tray may be inspected and
cleaned if necessary.
•The LPHW and Electrical heater settings, coil bleed and drain, and
all other control adjustments are similarly accessible.
•Side access, where possible, is preferred in all cases in terms of safe
working access to the equipment under the CDM regulations.
•Note however, that access in the situation is difficult and
additional time should be allocated. For convenience it is preferred
that wherever possible, this minimum access provision is not
adopted, and it is recommended that a minimum of around
600mm clearance (as stated in ADF 2010) is allowed.
•Where these arrangements are not suitable, the Consultant’s
and Contractor’s project specific requirements will always be
accommodated where possible.
5.1 Hinged / Removable Panel Access
All hinged access panels will be lockable and removable via locked
hinges which can be opened for panel removal. All keys are identical
and will open any handle or hinge.
The hinges do not need to be unlocked in normal operation of opening
and closing.
5 Removable Hinged Access Panel (Hinged)
6 Removable Hinged Access Panel (Removed)

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26. 01. 22. Document Number 671829
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
BPS H-AT
Installation Manual
5.2.2 Right Hand Plate Heat Exchanger Units
Extract
Supply
Intake
Exhaust
Model shown is right handed
9 Access For Right Hand Plate Heat Exchanger Units
EXTRACT
SUPPLY
INTAKE
DISCHARGE
Access
Shown from top (Right hand - R).
Access600mm
600mm
10 Top View of Access For Right Hand Plate Heat Exchanger Units
5.2 Access Areas
5.2.1 Left Hand Plate Heat Exchanger Units
Intake
Exhaust
Extract
Supply
Model shown is left handed
7 Access For Left Hand Plate Heat Exchanger Units
EXTRACT
SUPPLY
INTAKE
DISCHARGE
Access
Shown from top (Left hand - L).
Access
CONTROLS
LPHW
600mm
600mm
8 Top View of Access For Left Hand Plate Heat Exchanger Units

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26. 01. 22. Document Number 671829
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
BPS H-AT
Installation Manual
6.0 MECHANICAL INSTALLATION
Installation must be completed by competent persons, in accordance
with good industry practice and should conform to all governing and
statutory bodies i.e. IEE, CIBSE, etc.
The unit should stand upright and level on the floor, foundation
or supporting steelwork which should be rigid, flat and level and
should be capable of supporting the weight of the unit including
water or refrigerant in the coils. Nuaire takes no responsibility for the
coordination of support.
6.1 Unit Location
To prevent possible reintroduction of contaminated air through the
outside air intake, the unit should be located away from building flue
stacks or exhaust ventilators.
Once assembled and in position, sufficient free space must be available
adjacent to the unit for future inspection, maintenance, component
service, repair and replacement and connection of services. It is
recommended that at least the unit width (vertically arranged units)
+ 100mm be allowed. A minimum of 600mm is required for regular
maintenance.
Sufficient clearance for U-traps on condensate drain and overflow
connections should also be considered by the purchaser.
6.2 Air Leakage
Loading, transportation, off loading and site positioning can cause
the air handling unit structures to move, therefore panel seals will not
always remain fully intact.
It is inevitable that in such cases, re-sealing of the units panels and
joints may have to be carried out on site for the air-handling units to
achieve the required leakage classification. Door locking mechanisms
may also have to be adjusted.
Nuaire cannot be held responsible for the units failing a site leakage
test if the above have not been carried out correctly.
6.3 Module Joints
After unwrapping, temporarily remove the rubber weatherproof cover
strip and M10 base frame bolts from any modules and store in a safe
location for later use.
Apply the sealing gasket as necessary to the mating faces of the
unit frames. Typically the sealing gaskets are pre-fitted to the heat
exchanger module; ancillary modules will be provided with a roll of
sealing gasket for on-site fitting.
Make the unit joints in the following order:
•Left and right hand side M10 bolts between the modules’ base
frames (Figure 11).
•Left and right hand side M6 Lower 3 axis alignment clamps (Figure
12).
•Left and right hand side M6 Middle 3 axis alignment clamps.
•Left and right hand side M6 Upper 3 axis alignment clamps.
Air leakage, air blow marks to the unit casings and unacceptable
noise levels could result if the correct installation procedures are not
employed.
Prior to making the unit joints, you must ensure the base frames of
adjoining modules are fully touching along the width of the unit.
Failure to do so can result in deformation of the unit frame when
using the three axis alignment clamps.
11 M10 Modular Base Frame Connection Bolt
12 3-Axis Clamp
6.4 Internal Connections
There are a number of internal connections that need to be completed
prior to starting/commissioning the unit. These consist of all the wiring
connections and the condensate hose (plate heat exchanger option
only).
Please ensure that the condensate hose is connected between modules.
Care must be taken to ensure a constant fall in gradient is maintained
and the hose is kept taught (Figure 13).
Access is available in the fan plate to allow electrical/wiring
connections to be made between modules (Figure 14).
When making the wiring connections, the sensor loop (Figure 15) must
be removed and relocated to the end of the unit.
13 Condensate Hose Connection

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26. 01. 22. Document Number 671829
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
BPS H-AT
Installation Manual
14 Fan Plate Access Hatch
15 Sensor Loop Connection
6.5 Condensate Drain
Plate heat exchanger components and modules that incorporate
cooling coils may produce condensation during use. An insulated drip
tray and condensate pump is provided where necessary. The drain
connection must be connected to a suitable drainage point.
Condensate pump specification:
Maximum flow rate = 50 L/H
Maximum head = 20m Vertical, 100m Horizontal
Pipe Connection size (Low Pressure Condensate connection) = 8 mm
6.6 Thermal Wheel Drive / Belt Tension
Thermal wheel modules can be delivered with transport packing blocks,
ensure any transport blocks are removed prior to operation of the
thermal wheel.
The thermal wheel belt is unhooked to prevent the thermal wheel belt
from stretching during transportation.
The thermal wheel motor is attached via a hanging motor bracket. To
install the belt lift the spring motor upwards, hook the belt onto the
pulley and slowly release the motor.
Ensure that the rotation sensor is aligned with the sensing studs,
as this can become misaligned during transport/installation thus
causing a fault signal.
6.7 Weather Resistant Units
The units are supplied in multiple sections and have weather resistant
roof components that must be fitted and sealed after the unit sections
are bolted together. All necessary fixings are supplied with each unit
and are normally bagged and located within the fan section. Suitable
mastic sealant is to be provided by others.
Where the weatherproof roof assembly of two sections meet, the
metal hinged weatherproof cover strip must be closed to seal the seam
between unit sections and fixed with the bolts provided.
The equipment must not be exposed to the weather in an unassembled
or partially assembled state. All roof terminal, ductwork, sealing and
assembly work must be completed before the unit can be considered
weather resistant.
6.8 Unit Connections
6.8.1 Ducting
Nuaire do not provide ductwork connections with units, instead the
open ended framework should be utilised. Flanged connections are
available as an option, refer to technical documents for information
relating specifically to the manufactured unit.
6.8.2 Coil
When connecting coils, special care is needed to allow for expansion
and contractions. Prior to any equalising connection, ensure that the
thermostatic expansion valve for the DX coil is securely fitted.
Additional care must be taken when using R32 or other flammable
refrigerants: your commissioned system must comply with the
requirements of BS EN 378. Units must be fitted with gas detection
systems (or deploy other suitable control method) to ensure that,
in the event of a refrigerant leak, the Lower Flammability Limit is
not exceeded.
Each coil section should be trapped and special care should be taken to
ensure that there are no vertical rising condense lines, unless pumped.
Wet pipe connections sizes are listed in the table below.
Care should be taken to ensure that all pipework is adequately
supported, therefore ensuring that no additional weight is added to the
unit. Extra precaution should be taken to prevent pipe damage on site,
as the fragile pipework will protrude from the side of the unit.
If a frost coil is not fitted then appropriate control methods must
be taken to prevent the coils, filters and other equipment from
freezing (by others).
Unit
Size
Frost Coil
(LPHW)
Heating Coil
(LPHW)
Cooling Coil
(CHW)
Flow Return Flow Return Flow Return
05 15 mm 15 mm 15 mm 15 mm 22 mm 22 mm
10 22 mm 22 mm 22 mm 22 mm 22 mm 22 mm
15 22 mm 22 mm 22 mm 22 mm 28 mm 28 mm
20 28 mm 28 mm 28 mm 28 mm 35 mm 35 mm

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26. 01. 22. Document Number 671829
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
BPS H-AT
Installation Manual
6.9 Filters
16 Filter Side Withdrawal
6.9.1 Filter Removal
Filters will be provided in banks on suitable slide rails, so that they can
be withdrawn from the access side of the unit. Differential "Dirty Filter"
pressure switches are fitted as standard.
6.9.2 Spare Filters
If specified with order, spare sets of filters will be provided and should
be stored in a clean, dry environment. Should you require spare filter
media, please contact Nuaire.
6.10 Control Dampers
Care should be taken to ensure that all spring return actuators have
stopped running and completed their stroke. If not, the connection
needs to be loosened and the actuator should be left to drive until the
motor stops running.
When the unit is powered, dampers should be checked to ensure that
they operate freely and close tightly.
Where dampers are protected with a roof terminal, the roof terminal
can be removed for access to the main damper. Access to the actuator
can be from the side of the roof terminal without the requirement of
removing the roof terminal (Figure 17).
6.11 Damper / Roof Terminal Assembly
The inlet/outlet dampers and roof terminals are pre-assembled (for BPS
sizes 07, 12 and 17) on a double skinned and insulated panel. The panel
is easily fitted to the unit with a series of quarter turns (provided with a
locking key) (Figure 19).
For the larger size BPS units (22, 32 and 42) the pre-assembled
dampers and terminals are provided with lifting eyes for on-site
hoisting into position (Figure 20).
17 Removing Roof Terminal
18 Actuator Access
19 Inlet / Outlet Damper / Terminal Quarter Turn Fixings
20 Inlet / Outlet Damper / Terminal Lifting Eyes (22, 32 & 42)
6.12 Supporting Ancillary Items
All ancillary items that are supplied without individual base frames
require safe suitable support (supplied by others). This includes but is
not limited to single attenuators, terminals and dampers etc.
6.13 Installation Inspection
•Thoroughly inspect the unit after installation is complete.
•The inside of the unit should be checked; any objects which may
have been left should be cleared.
•Check fan impellers, scrolls and outlets.
•Remove any transit protection fittings that may be attached to the
fan or motor base frame, and that all traps are primed.
•Close all access door seals for damage, and replace any panels that
have been removed.

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26. 01. 22. Document Number 671829
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
BPS H-AT
Installation Manual
7.0 ELECTRICAL INSTALLATION
The electrical wiring must be carried out by competent persons, in
accordance with good industry practice and should conform to all
governing and statutory bodies i.e. IEE, CIBSE etc.
7.1 Main Unit Power Supply
The control is powered by a 400Vac 50Hz 3 phase & Neutral supply.
This must be isolated local to the unit and fitted with appropriate over-
current and fault protection.
7.2 Electric Heater Power Supply
For models with electric heating, the heating circuit is powered by 1 or
2 separate, higher current, 400Vac 50Hz 3 phase & Neutral supplies.
This must be isolated to the unit and fitted with appropriate over-
current protection. The main supply is still required. Electric heater
elements are protected by a fail-safe over-temperature switch which
will disconnect the heater supply if a temperature of 80°C is reached.
Once the elements cool, the switch will reset but a power cycle is
required to reset the heater supply contactor.
7.3 Unit Power Supply Details - FLC
Unit Size Unit (FLC) Unit with Electric Heater
(Electric Heater Models Only)
Unit with Condenser(s)
(Condenser(s) Models only)
Units with both Condenser
and Electric Heater
B*05H/**AT 4.2 A 4.2 A + 18 A †8.7 A 8.7 A + 18 A †
B*10H/**AT 13 A 13 A + 27 A †17.5 A 17.5 A + 27 A †
B*15H/**AT 6.8 A 6.8 A + 35 A †13.9 A 13.9 A + 35 A †
B*20H/**AT 12.8 A 12.8 A + 53 A †17.3 A 17.3 A + 53 A †
B820H/**AT 9.6 A 9.6 A + 53 A †14.1 A 14.5 A + 53 A †
* Denotes any Character.
† These heater models require a separate power supply for the electric heater section, with an appropriate over-current protection device.
7.4 Condenser Power Supply Details - FLC
Unit Size Condenser Units
Required
Maximum Current Power Supply Mitsubishi Part Number
05 BPS-CU-MIT-14 x1 13A 3phase, 50Hz, 400V PUHZ-P140YHAR2
10 BPS-CU-MIT-14 x1 13A 3phase, 50Hz, 400V PUHZ-P140YHAR2
15 BPS-CU-MIT-20 x1 19A 3phase, 50Hz, 400V PUHZ-P200YKAR1
20 BPS-CU-MIT-25 x1 21A 3phase, 50Hz, 400V PUHZ-P250YKAR1
See condenser manual for more information.
7.5 Wiring
All inter-connections between circuit boards, blowers and sensors are
made at the factory. This diagram only shows the essential field wiring
points for clarity.
Remove link wire if switched live signal, an enabler or BMS signal is
connected.
If inlet and outlet dampers are fitted, remove the damper link
wires. This will allow a 1 minute delay before starting the fans.
7.6 Emergency Shut Down Circuit
Emergency Shutdown Circuit. Break to Remove power. Remove Jumper
bar between T6 & T7 to use.
7.6.1 Switch Live
Switch Live (SL) terminal - A signal of 100-230V a.c. will activate the
switch live signal.
Switch Live 2 (SL2) terminal - A signal of 100-230V a.c. will activate the
switch live 2 (Fan Boost) signal.
A signal from an isolating transformer will produce an
unpredictable result and is not recommended.
Extra low voltage versions of the switched live signals are also available.
Link two contacts to activate the signal.

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26. 01. 22. Document Number 671829
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
BPS H-AT
Installation Manual
7.6.2 Volt Free Contacts
The volt free contacts are not fused. If these are used to power any
external equipment, the installer must provide adequate fusing or other
protections.
Trend 8D) relays are rated at 5A 240Vac resistie. DIN mounted TE
relays are rated at 8A 240Vac resistive.
Fault - The relay is unpowered when a fault is present.
Heat Demand - The relay is powered when heating is selected.
Cool Demand - The relay is powered when cooling is selected.
7.8 Isolator Wiring Points
Main wiring points for the customer is to the isolators situated on the
sides of the units as shown below.
ISOLATOR POSITIONED ON
ELECTRIC HEATER UNIT
Unit Isolator
21 Isolator Locations
7.6.3 Network Settings
IP address: 192.168.11.12
Subnet mask: 255.255.255.0
LAN 011,node 012
7.7 Connection Chart
Description iQ4E
Terminal No.
8DO
Terminal No.
Di AI DO AO
Fresh Air Sensor 1 (4,5) 1
Supply Air Sensor 2 (6,7) 1
Return/Room Air Sensor 3 (8,9) 1
Input 4 4 (10,11) 1
Input 5 5 (12,13) 1
Pressure Sensor 6 (14,15) 1
Alarm Circuit 1 (Fan, Heater) 7 (16,17) 1
Alarm Circuit 2 (Pump, Filter, Thermal Wheel, IO Damper Shut) 8 (18,19) 1
Volt-Free Enable Input Signal 9 (20,21) 1
Volt-Free Boost Input Signal 10 (22,23) 1
Extract Fan 0-10V 11(24,25) 1
Supply Fan 0-10V 12 (26,27) 1
Heat Demand 0-10V 13 (28,29) 1
Cool & RC Demand 0-10V 14 (30,31) 1
HX Bypass Relay 1 1
Fault Relay 2 1
Fan Run Relay 3 1
Heat Demand Relay 4 1
Cool & RC Demand 5 1
Recirculation Damper Relay 6 1
Inlet Output Damper Relay 7 1
Spare Relay 8 1
Cable glands are for additional ancillary cabling and are located on the
sides of the units.
22 Cable Gland Locations

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BPS H-AT
Installation Manual
7.9 Terminal Wire Connections
7.9.1 Push In Termination
Stripped solid conductors, fine-stranded conductors with ferrules, or
ultrasonically “bonded” conductors are simply pushed in until they hit
the backstop. No tools are required.
7.9.2 Termination Of Fine Stranded Conductors
Open the clamp by inserting an operating tool (as shown below)
until it clicks into position. Then insert the conductor and remove the
operating tool to complete the connection.
23 Wiring a Conductor to a Terminal
7.9.3 Conductor Removal
Insert an operating tool in to the operating slot to remove
the conductor, just like the original CAGE CLAMP® terminals blocks.
24 Removing a Conductor from a Terminal
7.9.4 Jumpers
Terminal blocks can be commoned together to increase the number of
terminals at the same potential using push-in jumpers. In these cases
the terminals are treated as one conductor.
25 Fitting Jumpers
7.9.5 Jumper Removal
Insert the operating tool blade between the jumper and the partition
wall of the dual jumper slots, then lift up the jumper.
26 Removing a Jumper
7.9.6 Double Deck Termination Block
Each deck has a different potential (2-conductor), which creates a space
saving on the rail. Decks can be commoned to adjacent terminal blocks
and / or the top to the bottom deck.
27 Double Deck Conducting Paths
7.9.7 Earth Terminals
The earth terminal block (green/yellow) has a direct electrical
connection to the DIN rail, with the earthing foot (earth connection
only).
28 Earth Terminal Block
7.9.8 Fuse Terminals
Replaceable cartridge fuses are housed in quick release fuse terminals.
29 Fuse Terminal Block

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BPS H-AT
Installation Manual
5. Heating Type: E = Electric
L = Low Pressure Hot Water (LPHW)
N = No Heating
6. Cooling Type: C = Chilled Water (CW)
N = No Cooling
R = Reverse Cycle DX
X = DX*
7. Control Type: AT = Adapt Trend
8. Access Handing L = Left Hand
(in direction of supply R = Right Hand
airflow)
*Condenser Unit and control by others.
7.10.2 Wiring Diagram Reference Table
Unit
Size
Unit WITHOUT
Electric Heater
or Reverse
cycle DX
Unit with
Electric
Heater
Unit with
Reverse
Cycle DX
Unit with Elec-
tric Heater &
Reverse Cycle
DX
05 Section 7.10.3 Section 7.10.4 Section 7.10.5 Section 7.10.7
10 Section 7.10.3 Section 7.10.4 Section 7.10.5 Section 7.10.7
15 Section 7.10.3 Section 7.10.4 Section 7.10.6 Section 7.10.8
20 Section 7.10.3 Section 7.10.4 Section 7.10.6 Section 7.10.8
7.10 Wiring Diagrams
A series of basic connection wiring diagrams have been provided to
assist on-site wiring. In order to reference the relevant diagrams please
use the code breakdown opposite to determine:
•Unit size
•If an electric heater is present
•If Reverse Cycle DX heating or cooling is present.
The below tables can then be used to reference the required connection
and wiring diagrams.
Example:
Unit onsite has code B815H/ER/AT-L. This indicates a size 15 unit with
electric heating and Reverse Cycle DX cooling. Section 7.10.6 includes
the unit wiring diagram.
7.10.1 Code Description:
B 8 15 H / L R / AT - L
| | | | | | | |
1 2 3 4 5 6 7 8
1. Range: B = Boxer Packaged Solution
2. ErP Compliance Year: 6 = 2016
8 or No Affix = 2018
3. Unit Size: 05, 10, 15 or 20
4. Heat Recovery Type: H = Horizontal Plate Exchanger
7.10.3 Unit Sizes 05 - 20 with No or LPHW Heating & No or CHW Cooling
30 Unit Sizes 05 - 20 with No or LPHW Heating & No or CHW Cooling Wiring Diagram

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BPS H-AT
Installation Manual
7.10.4 Unit Sizes 05 - 20 with Electric Heating & No or CHW Cooling
31 Unit Sizes 07 - 22 with Electric Heating & No or CHW Cooling Wiring Diagram

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BPS H-AT
Installation Manual
7.10.5 Unit Sizes 05 - 10 with No or LPHW Heating & Reverse Cycle DX
32 Unit Sizes 07 - 12 with No or LPHW Heating & Reverse Cycle DX

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BPS H-AT
Installation Manual
7.10.6 Unit Sizes 15 - 20 with No or LPHW Heating & Reverse Cycle DX
33 Unit Sizes 15 - 20 with No or LPHW Heating & Reverse Cycle DX

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BPS H-AT
Installation Manual
7.10.7 Unit Sizes 05 - 10 with Electric Heating & Reverse Cycle DX
34 Unit Sizes 05 - 10 with Electric Heating & Reverse Cycle DX

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BPS H-AT
Installation Manual
7.10.8 Unit Sizes 15 - 20 with Electric Heating & Reverse Cycle DX
35 Unit Sizes 15 - 20 with Electric Heating & Reverse Cycle DX

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Installation Manual
8.0 CONTROLS
The system incorporates a web enabled Trend iQ4E/96/LAN/BAC/230
controller with iQ4/IO/8DO relay expansion module.
36 Trend iQ4E
8.1 Controllable Items
•Supply fan.
•Extract fan.
•Heat recovery bypass damper (If applicable).
•Thermal wheel (if applicable).
•Heating coil (if fitted).
•Cooling coil (if fitted).
•DX coil (if fitted).
•Inlet damper (if fitted).
•Exhaust Damper (if fitted).
•Recirculation damper (if fitted).
8.2 Enable Signal
The unit can be enabled via the following methods:
•Software switch (ENABLE) via SDU, IQView4, IQView8 or
network.
•Switched live (230VAC) input, PIR etc.
•Extra Low voltage contacts.
•Night cooling / summer free-cooling strategy.
•Scheduled via weekly calendar.
When the enable signal is removed, the unit will run on for a time
defined by the run-on setpoint. If an electric heater is fitted, the fans
will automatically run-on for an extra 2 minutes, without heating, in
order to dissipate residual heat.
For DX units the fans will run-on for an extra 5 minutes, this is to allow
for the ramp down of the reverse cycle compressor.
8.3 Occupancy Control
When a Trend occupancy sensor is selected via UI4 & 5 software
module, the control will look for a Trend OCC-U sensor in the
appropriate input. An occupied signal will give an enable signal.
•0V = Occupied
•14V = Unoccupied
8.4 Boost Mode
When the control receives a boost signal the fans will run at boost
speed. Once the signal is removed the fans will run on for a time
defined by the boost run-on setpoint.
8.5 Trickle Mode
When trickle mode is active, the fans will run at their minimum speed
even when there is no enable signal. Heating and cooling will also
function in this mode if available.
8.6 Constant Pressure Sensor
An extract air pressure sensor is fitted as standard. This is disabled in
the Trend strategy by default but can be enabled by the software switch
“Enable Constant Pressure”.
When enabled, the unit will increase the fans speeds as required until
the pressure differential between the extract air and atmosphere
reaches the constant pressure setpoint. The pressure sensor is a 0-10v
0-1000Pa sensor on the iQ4E input 6.
8.7 Filter Differential Pressure Switch
3 filter differential pressure switches are fitted as standard. These
monitor the Extract filter, and Supply filter and Supply pre-filters.
These are connected in series with Alarm Circuit 2 (orange wires) and
will break the circuit on overpressure. The adjustable range is 0.5 to 4
mbar and is set by default to 2mbar.
8.8 Thermal Wheel / Plate Heat Exchanger Bypass
The plate heat exchanger bypass damper and thermal wheel both run
on the same iQ4-8DO Relay 1. Energised = Bypass.
The bypass strategy is as follows: If the fresh air temperature is equal
to the setpoint within the deadband, then the heat exchanger will be
forced into bypass mode.
The 24vac bypass signal from the Trend relay is converted by relay logic
for each of the following options:
•Thermal Wheel
Runs on a volt free enable signal, which is produced using a
combination of the HX bypass relay and fan run relay to close the
circuit if fans are running and the unit is not in bypass.
•Plate Heat Exchanger
The HX bypass damper opens on a 24 Vac signal which is produce
from the bypass damper relay.
8.9 Inlet / Outlet (IO) Dampers
Inlet and outlet dampers are 24vac and controlled by the iQ4-8DO
relay 7. When energised it gives a 24vac signal to both I/O dampers to
open.
When installed, there is the option of connecting the internal damper
close switch to the fault circuit alarm circuit 2 (orange wires).
When IO dampers are fitted the strategy Switch “IO Damper Fitted”
must be set to “On”. This will cause the software to delay the fans
starting for the IO Damper delay period. It will also ignore faults on
Alarm Circuit 2 if the fans are stopped and the dampers are closed
intentionally.
8.10 CO2 Control
When a CO2 sensor is selected via UI4 & 5 function knobs, and an
enable signal is received, ventilation will increase to reduce CO2
concentration the target CO2 setpoint. The target CO2 sensor setpoint
can be changed as one of the commissioning setpoints.

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BPS H-AT
Installation Manual
8.11 Supply Air Temperature Control
While an enable signal is present, this mode modulates heating,
cooling & heat exchanger bypass dampers with the aim of the supply
air reaching the temperature setpoint. Please note that heating and
cooling outputs will only function if the HeatingType or CoolingType
setpoints are set to heating or cooling options.
8.12 Frost Protection
Should the internal temperature of the unit fall below a value defined
in the commissioning variables, the control will override all heating/
cooling logic to open the LPHW or CW control valves, if fitted. This is
to allow any protective flow through the heating/cooling coils. The
supply fan will also stop and the appropriate frost protection software
module will enter an alarm state. This period will last for a minimum
of 5 minutes by default. The fault relay will also open. Heat and cool
demand relays will not operate but digital inputs “Frost Protecting
LPHW” or “Frost protecting CW” will enter an alarm state. Please
note that frost protection will only function if the HeatingType or
CoolingType setpoints are set to LPHW or CW.
8.13 Night Cooling / Summer Free Cooling
Once enabled in software, this routine uses an individual time schedule
to cool the fabric of the building at night using only the external air.
This mode only functions if the daytime temperature is above the
setpoint, cooling is possible and if the cooling air is not too cold.
8.14 Mitsubishi Reverse Cycle DX (Optional)
For units for use with Mitsubishi reverse cycle condenser units, one or
more PACIF012B-E Interface boards are fitted inside the control panel.
The controller interacts with this board in the following ways:
•Digital Output Heat/Cool selection from iQ4E relay 8. Another
relay is used to split output over multiple boards.
•0-10v Heat/Cool demand from iQ4E OUT14.
•Faults are monitored via iQ4E IN8 (Alarm circuit 2). A relay is
fitted to reverse the fault action.
•The defrost status relay is connected to the enable input of the
controller to start the fans when the condenser enters defrost
mode.
When Mitsubishi Reverse Cycle DX is fitted, this is selected in software
by setting the cooling type “3-Reverse Cycle”. A heating type is not
required unless another heating type is fitted (eg LPHW).
Once this is selected cooling and heating demand will share iQ4E
OUT14 and heat/cool is decided on the state of iQ4E relay 8.
(Energised = Cool Demand)
For the cases where Reverse Cycle DX and another heating type are
both fitted, a schedule module is provided in the Trend strategy. When
the schedule is on, the heating output reverts to LPHW/Electric heating.
The enable run-on time must be set to 3 minutes for reverse cycle
units. This is required in order to keep the compressor running for at
least 3 minutes for each period.
A minimum-on module is connected to the heat/cool relay in order to
stop frequent mode switching.
Although the controller outputs a variable 0-10v heating/cooling
voltage, the Mitsubishi condenser can only run at 7 discrete levels and
so cannot supply an accurate supply air temperature.
The PAC boards are powered from the BPS control so the only
connections required to the Outdoor condenser are S2 & S3. For the
same reason, SW8-3 must be set to “ON” on the outdoor unit.
8.15 Partial Recirculation Damper (Optional)
If a partial recirculation module is fitted, the recirculation damper will
open/close via iQ4-8DO Relay 6 according to the following strategy.
If the room temperature is more than 5°C(adjustable) from the
setpoint and free-cooling or free-heating is not available then partially
recirculate the air.
This aids heating and cooling elements and also avoids thermal loss
from the room.
8.16 Alarms
8.16.1 Critical Alarm (Latching)
Once in critical alarm state the unit will drive all heating and cooling
outputs to 0V. Other functions continue as normal. The critical alarm is
latched and required manual reset or power cycle to clear.
Causes of critical alarm:
•Fan fail via fault circuit 1.
•Heater overtemp via fault circuit 1.
8.16.2 Maintenance Alarm
Once in maintenance alarm state the only action taken is de-energising
of the fault relay. Once the trigger is removed, the alarm will reset
automatically
Causes of critical alarm:
•Condensate pump fault via alarm circuit 2
•dp Filter fault via alarm circuit 2.
•IO damper fault via alarm circuit 2.
•Thermal Wheel fault via alarm circuit 2.
•Sensor failure
•Low supply temperature, default 8°C (Can be set to stop fans if
required).
•Frost protection routine active, deafult 4°C (Only runs if water
valves are selected as fitted)
•Excessively high supply temperature reading (Will stop heating).
If pump fault circuit is broken two additional events occur in order to
stop condensate production.
•The heat exchanger will enter bypass mode.
•Alarm 2 circuit will break, stopping cooling functions.
All alarms have a hold off period set by the setpoint “Alarm delay”.
8.16.3 Thermal Trip
In case of software failure, as a final resort, the electric heater is
protected by a fail-safe thermal overload switch. This switch disables
the heater controller via a contactor once the temperature reaches
80°C. When this occurs, the critical alarm will latch in software and the
supply contactor will latch in the off position.
Once the unit cools, the contactor will remain latched off until power
cycle.