NuAire DS1A-NES User manual

1
24. 02. 22. Document Number 671679
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
DAVE Supply (DS)
Supply Fans With Ecosmart Control
Installation Manual
1.0 SAFETY INFORMATION
• The provision of the electrical supply and the connection of the unit to the electrical supply 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.
• 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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24. 02. 22. Document Number 671679
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
DAVE Supply (DS)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 product:
•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 Dave range of in-line backward curve fans consists of 9 sizes
with a maximum duty of 1.1m3/s (1100l/s).
Units are manufactured from aluzinc, rectangular in section and have
circular rigid spigots at each end. All units are supplied with fixing
brackets designed to simplify installation.
2.1 Code Description:
1 2 3 - 4 5 6
DS 2HA -LES H
1. Range: DS =DAVE Supply Fan
2. Unit Size: 1 - 7
3. Fan / Case Type: A = Extended Case (Includes G3 Filter)
H= High Pressure Fan (Size 2 & 4 only)
HA = High Pressure Fan (Size 2 & 4 only)
with Extended Case (Includes G3 Filter)
4. Control: ES = Ecosmart
5. Heating Type: E = Electric Heating
L = LPHW Heating
N = No Heating
6. Electrical Frequency: No Reference =50Hz
H = 60Hz
3.0 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.
3.1 Offloading & Handling
The weight of the unit modules and palletised items are 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. Items should only be lifted by competent personnel
following appropriate risk assessment.
Assembly with
base frame
Palletised
Forklift
Slings via spreaders fitted to unit
with base frame.
Please note that above images are
examples of typical lifting methods.
Actual unit lifting plan and risks
must be assessed by competent
personnel before moving the unit.
1 Typical Loading Methods

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24. 02. 22. Document Number 671679
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
DAVE Supply (DS)Installation Manual
4.0 DIMENSIONS (mm) & WEIGHTS (kg)
Dia.
A
KB
L
C
J
H
G
Removable
weatherproof
control cover
Airflow
direction
2 DAVE Supply Unit Dimensions
Unit Code A B C 'D'
Dia. G H J K L Weight (kg)
DS1A-NES(H) 1005 559 233 150 370 150 100 960 609 30
DS1A-LES(H) 1005 559 233 150 430 175 190 960 609 55
DS1A-EES(H) 1005 559 233 150 430 155 155 960 609 50
DS2A-NES(H) 1005 696 300 200 370 150 100 960 746 40
DS2A-LES(H) 1005 696 300 200 430 175 190 960 746 60
DS2A-EES(H) 1005 696 300 200 430 155 155 960 746 50
DS2HA-NES(H) 1005 696 300 200 370 150 100 960 746 40
DS2HA-LES(H) 1005 696 300 200 430 175 190 960 746 60
DS2HA-EESH) 1005 696 300 200 430 155 155 960 746 50
DS3A-NES(H) 1005 780 345 200 370 150 100 960 830 45
DS3A-LES(H) 1005 780 345 200 430 175 190 960 830 65
DS3A-EES(H) 1005 780 345 200 430 155 155 960 830 55
DS4A-NES(H) 1005 840 370 250 370 150 100 960 890 50
DS4A-LES(H) 1005 840 370 250 430 175 190 960 890 70
DS4A-EES(H) 1005 840 370 250 430 155 155 960 890 60
DS4HA-NES(H) 1005 840 370 250 370 150 100 960 890 70
DS4HA-LES(H) 1005 840 370 250 430 175 190 960 890 70
DS4HA-EES(H) 1005 840 370 250 430 155 155 960 890 60
DS5A-NES(H) 1155 984 410 315 370 150 100 1110 1034 75
DS5A-LES(H) 1155 984 410 315 430 175 190 1110 1034 105
DS5A-EES(H) 1155 984 410 315 430 155 155 1110 1034 90
DS6A-NES(H) 1155 1092 455 400 370 150 100 1110 1142 80
DS6A-LES(H) 1155 1092 455 400 430 175 190 1110 1142 110
DS6A-EES(H) 1155 1092 455 400 430 155 155 1110 1142 90
DS7A-NES(H) 1155 1200 500 400 370 150 100 1110 1250 95
DS7A-LES(H) 1155 1200 500 400 430 175 190 1110 1250 120
DS7A-EES(H) 1155 1200 500 400 430 155 155 1110 1250 105
Removable Weatherproof Control Cover
Unit Code Width Height Depth
DS(1-7)A-NES(H) 470 173 120
DS(1-2)A-LES(H) 649 183 216
DS(3)A-LES(H) 649 243 256
DS(4)A-LES(H) 649 251 256
DS(5-7)A-LES(H) 649 323 281
DS(1-7)A-EES(H) 530 178 175

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24. 02. 22. Document Number 671679
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
DAVE Supply (DS)Installation Manual
5.0 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.
External units must not be installed at an angle over 5° from the
horizontal.
Mounting in the vertical orientation shown above IS NOT
ADVISABLE for LPHW units due to the actuator being below the
valve.
Service / Maintenance Access – Unit must be installed with a
minimum of unit depth as additional clearance i.e. DS1A-NES
either allow 233mm above or below unit.
Access to the unit for maintenance is via the top or bottom lid, this
should be taken into account before installation takes place (see
important note below).
When weather cover is removed from control, always replace the
removed fixings.
Front Elevation
Control
Airflow
Coil
Connections
3 Unadvisable Mounting Orientation (LPHW Units)
4 Unit Mounting Brackets (M8)
5.1 LPHW Heating Circuit (If Applicable)
LPHW supply units have a 2 Port PICV fitted. If the LPHW system is
not run via a ‘Constant Pressure Pump’ provision must be made to
incorporate a ‘Bypass’ into the system to maintain a minimum level
of flow through the pump when the 2 Port PICV is closed.
It is recommended that all joints are checked for leaks when
commissioning and a strainer and isolating valves are fitted (by others)
for ease of maintenance.
The Low Pressure Hot Water (LPHW) heating coil shall be factory
fitted with a 2-port pressure independent balancing and control valve
complete with actuator. All components pre-piped, assembled and
tested by the manufacturer.
Ecosmart frost protection is activated on any Ecosmart unit fitted with
LPHW heating, when the outlet air temperature is 4ºC or below.
Frost protection must be incorporated on shut down and fresh
air conditions to avoid the coil and associated pipework freezing.
Ideally, where the system is at risk of frost damage, the addition of
a proprietary antifreeze solution to the water is recommended.
The unit reacts by shutting down the fan to prevent a ‘wind chill’ effect
reducing the temperature to a point whereby the coil could freeze
and burst. The unit will also drive open the LPHW valve to a fully open
position to allow full water flow through the coil and the main PCB
will close the ‘Heat demand’ contacts. These contacts could be used to
send a signal to activate the boiler and/or valve to open to provide heat
if not already doing so.
Removable weatherproof cover
Ecosmart
control
Remove weather cover but leave pipe
plate in position (as above) to support
pipes during installation.
Pipe connection supplied with unit is 22mm Ø.
5 LPHW Circuit Pipe Support
6 Setting LPHW Actuator

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24. 02. 22. Document Number 671679
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
DAVE Supply (DS)Installation Manual
5.2 LPHW Heater Valve Settings (If Applicable)
5.2.1 DS1, DS2 & DS2H
DN20 L/h L/s GPM
20% 180 0.050 0.80
25% 225 0.063 1.00
30% 270 0.075 1.20
35% 315 0.088 1.40
40% 360 0.100 1.60
45% 405 0.113 1.80
50% 450 0.125 2.00
55% 495 0.138 2.20
60% 540 0.150 2.40
65% 585 0.163 2.60
70% 630 0.175 2.80
75% 675 0.188 3.00
80% 720 0.200 3.20
85% 765 0.213 3.40
90% 810 0.225 3.60
95% 855 0.238 3.80
100% 900 0.250 4.00
5.2.2 DS3, DS4 & DS4H
DN25 L/h L/s GPM
20% 340 0.094 1.50
25% 425 0.118 1.88
30% 510 0.142 2.25
35% 595 0.165 2.63
40% 680 0.189 3.00
45% 765 0.213 3.38
50% 850 0.236 3.75
55% 935 0.260 4.13
60% 1020 0.283 4.5
65% 1105 0.307 4.88
70% 1190 0.331 5.25
75% 1275 0.354 5.63
80% 1360 0.378 6.00
85% 1445 0.401 6.38
90% 1530 0.425 6.75
95% 1615 0.449 7.1 3
100% 1700 0.472 7.50
5.2.3 DS5, DS6, DS7
DN32 L/h L/s GPM
20% 640 0.178 2.80
25% 800 0.222 3.50
30% 960 0.267 4.20
35% 1120 0.311 4.90
40% 1280 0.356 5.60
45% 1440 0.400 6.30
50% 1600 0.444 7.00
55% 1760 0.489 7.70
60% 1920 0.533 8.40
65% 2080 0.578 9.10
70% 2240 0.622 9.80
75% 2400 0.667 10.50
80% 2560 0.711 11.20
85% 2720 0.756 11.90
90% 2880 0.800 12.60
95% 3040 0.844 13.30
100% 3200 0.889 14.00

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24. 02. 22. Document Number 671679
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
DAVE Supply (DS)Installation Manual
6.0 ELECTRICAL INSTALLATION
Isolation - Before commencing work, make sure that the unit and
Nuaire control are electrically isolated from the mains supply.
6.1 Unit Details
Unit details including Full Load Current, Voltage, fan speed etc. can be
found on the unit label.
6.2 Wiring Diagrams
Local isolator (by others). All inter-connections between circuit
boards, blowers and sensors are made at the factory. Remove link wire
if switched live signal, an enabler or BMS signal is connected.
6.2.1 DS1-7 with No Heating
7 Wiring - DS1-7 with No Heating
6.2.2 DE1-7 with Extended Case (G3 Filter)
8 Wiring - DS1-7 with LPHW Heating

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24. 02. 22. Document Number 671679
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
DAVE Supply (DS)Installation Manual
6.2.3 DS1-4 with Electric Heating
9 Wiring - DS1-4 with Electric Heating
6.2.4 DS5-7 with Electric Heating
10 Wiring - DS5-7 with Electric Heating

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24. 02. 22. Document Number 671679
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
DAVE Supply (DS)Installation Manual
6.3 LPHW Heater Frost Protection (If Applicable)
Ecosmart frost protection is activated when the outlet air of the unit
is 4°C or below, when this temperature is reached, the unit reacts by
shutting down the fan to prevent a ‘wind chill’ effect reducing the
temperature to a point whereby the coil could freeze and burst. The
unit will also drive open the LPHW valve to a fully open position to
allow full water flow through the coil and the main PCB will close the
‘Heat demand’ contacts. These contacts could be used to send a signal
to activate the boiler and/or valve to open to provide heat if not already
doing so.
6.4 Electric Heater Cool Down Protection (If Applicable)
Ecosmart cool down protection is activated if the fan is disabled whilst
the electric heater is enabled. The unit reacts by running the fan for a
cool down period of 10 minutes; this allows any residual heat left by
the operation of the electric heater to dissipate safely.
6.5 Electrical Connections
6.5.1 Mains Connections
Mains cables should be suitably sized and terminated at the terminals
shown on the appropriate diagram.
6.5.2 Control Connections
3 IDC plug-in Net connectors are provided for the connection of
compatible sensors, manual controls and for linking the fans together
under a common control. If more than 3 connections are required,
the junction box (product code ES-JB) should be used (see data cable
installation).
11 Ecosmart Net Connections
6.5.3 Switched Live (SL) Terminal
Mains cables should be suitably sized and terminated at the terminals
shown on the appropriate diagram.
N
E
L
SL
Remove link if switched live signal,
an enabler or BMS signal is connected.
Terminals or PCB
Mains connection pre-wired
230V 50Hz 1ph / 220V 60Hz 1ph
12 SL Terminal
6.5.4 Control Connections
A signal of 100-230V / 220V a.c. will activate the fan from either its
off state or trickle state (see setting to work-trickle switch). When
the SL is disconnected the fan will over-run (see setting to work-timer
adjustment). Do not take this signal from an isolating transformer.
6.5.5 Volt Free Relay Contacts
Volt free contacts are not fused, if these are used to power any external
equipment, the installer must provide adequate fusing or other
protection. These contacts are rated at 5A resistive, 0.5A inductive.
Run Connections = Contacts are closed when the fan is running.
Fault Connections - No Fault = Contacts are closed.
Fault Connections - Fault = Contacts are open.
13 Volt Free Relay Contacts
RUN FAULT
Run signal Fault signal
6.5.6 Data Cable Installation
A 4-core SELV data cable is used to connect devices.
Do not run data cable in the same conduit as the mains cables and
ensure there is a 50mm separation between the data cable and other
cables. The maximum cable run between any two devices is 300m
when it is installed in accordance with the instructions.
Please note that the total data cable length used in any system
must be less than 1000m. Keep the number of cable joints to a
minimum to ensure the best data transmission efficiency between
devices.
6.5.7 Maximum Number of Devices
The maximum number of devices (including fans) that can be
connected together via the cable is 32, irrespective of their functions.
6.5.8 Other Low Voltage Cables
Follow the basic principle (as 5.1.6). Keep the cable run as short as
possible, less than 50 metres.
6.5.9 Commissioning Panel Details
A Commissioning Procedure document (leaflet No. 671153) is available
on request from the Nuaire Technical Library, Tel: [phone].
LED indicators
Min Max SL run on
Trickle Test
10
Pwr
Standby
Fan 1
Fan 2
Heating
Cooling
Fault
Frost
Tx
Rx
MIN = Minimum speed
adjustment
MAX = Maximum speed
adjustment
SL Run on = Switched Live Run-On
Timer adjustment
TRICKLE = Selects trickle running:
0 = off, 1 = selected
TEST = Test button
14 Commissioning Panel
6.6 LED Indicator
PWR GREEN: Power on & OK.
RED: To much power is taken by peripherals or there is a short
circuit in the net cable. Check the cable and use a junction
box (ES-JB) to connect some of the peripherals.
Standby LED on when fan is not running.
Fan 1 GREEN: Fan 1 is running, RED: Fan 1 faulty.
Fan 2 GREEN: Fan 2 is running, RED: Fan 2 faulty (Twinfan only).
Heating* Not applicable. See note.
Cooling* Not applicable. See note.
Fault LED on when a fault is present on unit.
Frost* Applicable with LPHW only. See note.
Tx LED on when the controller is transmitting data.
Rx LED on when the controller is receiving data.
The control panel is common to all the Ecosmart classic products
and will have indicators for functions that are not available in this
particular fan. However these indicators will not be illuminated.

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24. 02. 22. Document Number 671679
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
DAVE Supply (DS)Installation Manual
6.7 Control Panel
Volt Free
0.5A inductive
Contact
RUN signal 5A resistive
Volt Free
Contact
FAULT signal
N
L
SL
DP
RUN FAULT
CL
N
RET
Switc
if a BMS is connected.
Also remove link if an
enabling device is
connected in the 'NET'
Remove this link wire if
a switched live signal is
connected to terminal SL
NOTE: Also remove link
h live signal
(if required)
NET connections for
No user
ECOSMART devices
connections
connections
CO2 sensor
0
ECOSMART NET
+ve signal
from BMS
Ribbon cable
to commissioning
box
230V 1ph 50Hz supply / 220V 1ph 60Hz supply
15 PCB Details
6.7.1 BMS Input Signals
The BMS connection is made with a plug-in connector via the socket. To
ensure the connection is made only by suitably qualified and authorised
personnel the plug is not supplied.
Plug-in BMS connector is available from:
R S Components, Part No. 403-875 or
Farnell, Part No. 963-021
0 - 10V 0V
BMS
16 BMS Connection
Reversal of the BMS connection will damage the control.
The system’s response to a 0-10V dc BMS signal is given in the table
below. Note the BMS signal will override any sensors and user
control connected in the system. The voltage tolerance is +/-
125mV and is measured at the fans terminal.
Ventilation Cooling mode * Heating mode *
Local Control 0.00 - -
OFF / Trickle 0.25 - -
Speed 1 0.50 0.75 1.00
Speed 2 1.50 1.75 2.00
Speed 3 2.50 2.75 3.00
Speed 4 3.50 3.75 4.00
Speed 5 4.50 4.75 5.00
Speed 6 5.50 5.75 6.00
Speed 7 6.50 6.75 7.00
Speed 8 7.50 7.75 8.00
Speed 9 8.50 8.75 9.00
Speed 10 9.50 9.75 10.00
*Only available on relevant unit
7.0 MAINTENANCE
Isolation - Before commencing work, make sure that the unit and
Nuaire control are electrically isolated from the mains supply.
It is important that maintenance checks are recorded and that the
schedule is always adhered to, in all cases, the previous report should
be referred to.
Motors are fitted with sealed for life bearings and do not require any
lubrication.
7.1 Routine Maintenance
•Remove the top or the bottom cover and carefully clean out the
interior as necessary.
•Check all parts for security and that the impeller rotates freely,
taking care not to disturb the balance.
•The filter (where applicable) will require cleaning on a regular
basis. The frequency of the cleaning operation will depend on the
site conditions.
•Ensure all control components are secure and clean.
•Refit the cover.
7.2 Annually
•All electrical terminals within the unit should be tightened.
•Check all earth connections.
7.3 Dirty Filter Alarm (Extended Case Models Only)
Units pre fitted with a panel air filter are equipped with an visual Red
LED alarm on the side of the control. The pressure switch is pre set at
150pa and positioned within the unit and accessed via the removable
top or bottom panel. If required, the alarm signal can be positioned to
another area by others using the pre fitted terminal block - A volt free
relay must be used between the control and customer wiring.
LED On = Pressure exceeds the maximum allowable final pressure drop.
Replacement filter part numbers are shown below.
7.4 G4 Filter Replacement
Unit Replacement Part Number
DS1A-*ES D1A-G4FILTERKIT
DS2A-*ES D2A-G4FILTERKIT
DS2HA-*ES D2HA-G4FILTERKIT
DS3A-*ES D3A-G4FILTERKIT
DS4A-*ES D3A-G4FILTERKIT
DS4HA-*ES D4HA-G4FILTERKIT
DS5A-*ES D5A-G4FILTERKIT
DS6A-*ES D6A-G4FILTERKIT
DS7A-*ES D7A-G4FILTERKIT

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24. 02. 22. Document Number 671679
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
DAVE Supply (DS)Installation Manual
7.5 F7 Filter Replacement
Unit Replacement Part Number
DS1A-*ES D1A-G4FILTERKIT
DS2A-*ES D2A-G4FILTERKIT
DS2HA-*ES D2HA-G4FILTERKIT
DS3A-*ES D3A-G4FILTERKIT
DS4A-*ES D3A-G4FILTERKIT
DS4HA-*ES D4HA-G4FILTERKIT
DS5A-*ES D5A-G4FILTERKIT
DS6A-*ES D6A-G4FILTERKIT
DS7A-*ES D7A-G4FILTERKIT
7.6 Unit Components
Key Components
A Lid / Base
B Attenuation Pods
C Attenuation Pods Retaining Clips
D G4 Filter, Optional F7 Filter (site removal)
EWeather Cover for External Control Box Installation
(If required)
F LPHW Coil / 2 Port valve (PICV)
G Electric Heater
A
B
A
E
D
B
A
B
C
A
E
D
B
F
C
A
B
A
E
D
B
G
C
17 Unit Components (No Heater)
18 Unit Components (LPHW Heater)
A
B
A
E
D
B
A
B
C
A
E
D
B
F
C
A
B
A
E
D
B
G
C
19 Unit Components (Electric Heater)
A
B
A
E
D
B
A
B
C
A
E
D
B
F
C
A
B
A
E
D
B
G
C
8.0 WARRANTY
The 5 year warranty starts from the day of delivery and includes parts
and labour for the first year. The remaining period covers replacement
parts only.
This warranty is void if the equipment is modified without
authorisation, is incorrectly applied, misused, disassembled, or not
installed, commissioned and maintained in accordance with the details
contained in this manual and general good practice.
The product warranty applies to the UK mainland and in accordance
with Clause 14 of our Conditions of Sale. Customers purchasing from
outside of the UK should contact Nuaire International Sales office for
further details.
Failure to maintain the unit as recommended will invalidate the
warranty.