NuAire Ecosmart ES-ISC1.2A User manual

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24. 03. 22. Document Number 671432
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
ES-ISC
Ecosmart Speed 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.
• 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.
REFER TO INSTRUCTION MANUAL
Read and understand the installation and maintenance manual before installing,
operating or maintaining this product.
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.

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24. 03. 22. Document Number 671432
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
ES-ISCInstallation Manual
2.0 INTRODUCTION
The Ecosmart Energy Saving Speed Control is designed to control
selected Nuaire fans and to match the range of integrated
Ecosmart control systems.
The control is only available for three phase electrical supply.
The case material is of Aluzinc corrosion resistant steel, incorporates a
frequency inverter, Ecosmart control board and is directly compatible
with the Ecosmart range of user controls, time clocks, ‘stats and
sensors.
3.0 DELIVERY & HANDLING
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.
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.
Always handle with care to avoid damage and distortion, and where
lifting slings are employed use spreaders to ensure slings do not come
into contact with the unit case, or control pack.
Assembly with
base frame
Palletised
Forklift
Slings via spreaders fitted to unit
with base frame.
1 Typical Lifting Methods
4.0 DIMENSIONS (mm) & WEIGHTS (kg)
Control sizes are selected by matching the unit full load current with
the control code i.e. control code ES-ISC3.3A is suitable for a fan with a
maximum full load current of 3.3A.
The Inverter overload is pre-set at the rating plate value, if a lower
setting is required fit an appropriately sized overload relay to the output
contactor and adjust accordingly.
E
A
C
D/2
D/2
B
D
2 Dimensions and Drill Pattern
Unit Code A B C Weight Drill Pattern
D E
ES-ISC1.2A 230 325 410 6 340 298
ES-ISC2.4A 230 325 410 6 340 298
ES-ISC3.3A 230 325 410 6 340 298
ES-ISC4.1A 230 325 410 6 340 298
ES-ISC5.6A 290 390 455 14 470 373
ES-ISC7.3A 290 390 455 14 470 373
ES-ISC8.8A 290 390 455 14 470 373
ES-ISC12.5A 290 390 455 20 470 373
ES-ISC15.6A 290 390 455 20 470 373
ES-ISC23.1A 290 390 455 20 470 373
ES-ISC38.0A 355 525 805 40 710 510
5.0 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 ES-ISC is designed to be installed indoors, away from any water
spray or steam generating source. Fix or mount in upright position to a
secure vibration free vertical surface (Figure 2). Ensure the ventilation
grilles are free of obstruction. Minimum distance of 50mm between
grilles and any side obstruction. Minimum distance of 100mm between
grilles and any top obstruction. If the unit is installed outdoors, the
matching size weathering cover ES-ISC-WP(A-C) must be used to
provide weather protection.
The operating range is -10°C to 40°C, up to 85% relative humidity
(non-condensing). Installation in unventilated loft is not
recommended.
Ensure that the unit is electrically isolated from the mains supply
before commencing work. When the fan is isolated, allow 5
minutes for the capacitors in the inverter to discharge before
commencing any work on the unit.
Motors of 4kW and above must be connected to Delta ∆.
The screening of the power cable must be continuous. Bridge any
breaks (e.g. at local isolators) using braided earthing cable. Ensure
the screening is earthed at both ends.

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24. 03. 22. Document Number 671432
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
ES-ISCInstallation Manual
5.2 Electrical Installation
To minimise the possibility of Electro Magnetic interference:
•Always install screened cable between the control and the fan,
maximum length 30 metres. Consult Nuaire if a longer cable
run is needed.
•This product must be earthed and always ‘earth’ the screened
cable at both ends. Ensure that ALL earth connections are the
same potential. Cable glands are provided.
•Always keep mains supply cables and motor supply cables
separate and DO NOT install any data cable or low voltage
cable in the same containment as mains carrying cables.
The mains power supply to the controller must be appropriately sized
and installed via a local isolation switch (by others). The isolator must
also accommodate the 230V switched live (if used).
The mains supply from the Ecosmart controller to the fan must be
appropriately sized, not exceeding 30 Metres and must be a screened
power cable, earthed at both ends. A four point glanding plate is
formed from the base of the control and in order to maintain EMC
compliance, an EMC glanding kit is supplied.
Ecosmart controls and sensors are supplied with 10 metres of data
cable plugged at both ends, if used these can now be fitted and plugged
in to the low voltage sockets on the Ecosmart control board. All other
low voltage connections i.e. BMS can also be completed.
5.1 Mechanical Installation
For ease of installation, remove the front cover and disconnect any
cooling fans fitted. Remove the control casing from the base, offer the
base to the wall (or mark from the drill pattern).
Drill and fix the base to the wall using appropriate fasteners. It may be
easier to connect the field wiring at this stage. Reassemble the case
ensuring that cooling fans are reconnected.
5.2.1 Wiring Diagram
9 Wiring
N
L
SL
Remove this link wire if:
1. A switched live signal is connected.
2. An ES-PIR, ES-LCD or BMS signal is connected.
Max SL run on Min
Trickle Test
10
Pwr
Standby
Fan 1
Fan 2
Heating
Cooling
Fault
Frost
Tx
Rx
Ecosmart
Earth
FAULT RUN
DAMPER
E L3L2 N L1
E N L1 L2 L3
Mains supply connections
400V 50Hz 3ph + Neutral
via local isolator.
1 5 3
2 4 6
(U) (V) (W)
CONTACTER
A1
A2
0V
0-10V
BMS signal
'NET' connection
U V W E
DP
CL
Connections to fan via screened
power cable. Purpose made glands
are provided to earth the screening.
N
RET
Internal connections
between the supply
terminals, output
contactors, the PCB
and inverter are made
at the factory

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24. 03. 22. Document Number 671432
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
ES-ISCInstallation Manual
5.3 Control Connections
5.3.1 Mains Connections
Mains cables should be suitably sized and terminated at the terminals
shown on the appropriate diagram.
5.3.2 Ecosmart Connections
4 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 4 connections are required,
the junction box (product code ES-JB) should be used (see data cable
installation).
3 Ecosmart 'Net' Connections
5.3.3 Switched Live (SL) Terminal
A signal of 100-230V 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 for 1 – 60 minutes (see fig. 11).
Do not take this signal from an isolating transformer.
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
4 Switch Live Terminal Wiring
5.3.4 Damper Connections
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.
OP - 230V 50Hz 1A max supply to open the damper
CL - 230V 50Hz 1A max supply to close the damper
N- Neutral supply to damper
RET - 230V ac return signal from the damper limit switch indicates the
damper has reached its operating position. If the return signal is not
present, the fan will wait for 1 minute before starting.
If a damper is not fitted, connect a link wire from OP to RET. This
will cancel the delay.
All wiring is 1Ph 230V 50Hz
230V
motor
S4
2
S6
1
RETOP CL N
All wiring is 1Ph 230V 50Hz
Drive Open / Spring Close
Drive Open / Drive Close
230V
motor
RETN OP CL
White Brown Blue
A fan starting
delay of 1 minute is
imposed to enable
the damper to open.
To override the delay
fit a link here.
A fan starting
delay of 1 minute is
imposed to enable
the damper to open.
To override the delay
fit a link here.
5 Damper Wiring
5.3.5 Volt Free 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.
RUN FAULT
Run signal Fault signal
6 Volt Free Contacts
5.3.6 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.
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.
5.3.7 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.
5.3.8 Other Low Voltage Cables e.g. BMS signal
Follow the basic principle (as f). Keep the cable run as short as possible
but less than 50 metres. If the cable is longer than 12m, we recommend
using screened cable with the screening grounded at one end only
(preferably at the inverter end).

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24. 03. 22. Document Number 671432
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
ES-ISCInstallation Manual
5.3.9 BMS input signals
The BMS connection is made with a plug-in connector via the socket
(see fig. 9). To ensure the connection is made only by suitably qualified
and authorised personnel the plug is not supplied (available from R S
Components, Part No. 403-875 or Farnell, Part No. 963-021).
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. 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.
0 - 10V 0V
BMS
7 BMS Plug
System
Response
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.
6.0 CONTROLS
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
8 Control Panel
6.1 Test Button
The test button allows the blower within the unit to be checked for its
operation. If the fan is running already, press the button once to stop
the fan, press again to switch on the fan.
The fan will return to normal operation after 30 seconds.
6.2 LED Indication
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 (Twin fan 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.
6.3 Settings
6.3.1 Maximum Airflow Rate
•Ensure the power supply is switched off and that a link wire is
connected from the supply L to the SL terminal. Unplug all items
connected to the ‘Net’ connectors.
•Switch on the power supply.
•Wait for the fan to reach steady condition.
Measure the airflow using standard commissioning instruments at
a suitable point in the ductwork. If adjustment is required, rotate
the pot marked ‘MAX’ to obtain the desired airflow. Remove the
link wire if not required - see “wiring (c)”.
6.3.2 Minimum / Trickle Air Flow Rate (Nomial 20%)
•Repeat the same procedure as for maximum airflow above but
without the link wire between supply L and SL terminal. Ensure the
trickle switch is in the ‘ON’ position. Adjustment must be made on
the pot marked ‘Min’.
•The minimum setting (nominally 20%) must be below
the maximum setting; otherwise minimum setting will be
automatically set to be the same as the maximum.
•The minimum speed set is the trickle speed at which the fan
operates.
The working speed range of the user control and sensors is
between the minimum and maximum set points.

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24. 03. 22. Document Number 671432
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
ES-ISCInstallation Manual
7.0 MAINTENANCE
Ensure that the unit is electrically isolated from the mains supply
before commencing work. When the fan is isolated, allow 5
minutes for the capacitors in the inverter to discharge before
commencing any work on the unit.
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.
The first maintenance should be carried out three months after
commissioning and thereafter at twelve monthly intervals. These
intervals may need to be shortened if the unit is operating in adverse
environmental conditions, or in heavily polluted air.
7.1 Routine Maintenance
•Clean and inspect the exterior of the unit.
•Remove covers and carefully clean out any dust deposits.
•Check security of all components and terminals.
•Remove fan filters and clean or replace as necessary.
•Refit covers.
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.
9.0 END-OF-LIFE AND RECYCLING
Ensure that Nuaire product is made safe from any electrical / water
/ refrigerant supplies before dismantling commences. This work
should only be undertaken by a qualified person in accordance with
local authority regulations and guidelines, taking into account all
site based risks.
Where possible Nuaire use components which can be largely recycled
when the product reaches its end-of-life:
•Fans, motors, controls, actuators, cabling and other electrical
components can be segregated into WEEE recycling streams.
•Sheet metal parts, aluminium extrusion, heating/cooling coils and
other metallic items can be segregated and fully recycled.
•EPP, plastic ducting, nylon corner pieces, plastic heat exchangers,
packaging material and other plastic components can be
segregated into mixed plastic and widely recycled.
•Cardboard packaging, wood, used filters and other paper
components can be largely recycled or fully processed in energy
from waste centres.
•Remaining Items can be further segregated and processed in
accordance with the zero waste hierarchy. Please call After Sales
Support for further information on items not listed above.
10.0 AFTER SALES AND REPLACEMENT PARTS
For technical assistance or further product information, including spare
parts and replacement components, please contact the After Sales
Department.
If ordering spares please quote the serial number of the unit together
with the part number, if the part number is not known please give a full
description of the part required. The serial number will be found on the
identification plate attached to the unit casing.
Telephone [phone]
[e-mail]
Technical or commercial considerations may, from time to time,
make it necessary to alter the design, performance and dimensions
of equipment and the right is reserved to make such changes without
prior notice.

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24. 03. 22. Document Number 671432
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
ES-ISCInstallation Manual
NOTES

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24. 03. 22. Document Number 671432
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
ES-ISCInstallation Manual
NOTES