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NuAire ECOSMART XTRACTOR Installation And Maintenance Manual page 5

3 phase belt drive roof & plantroom single fans

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Installation and Maintenance
Connections
(continued)
Min
Max
0
1
Trickle
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
Fig. 9 Commissioning panel details.
Warning - Inverter Speed Control
An Inverter is used to provide speed control. When the fan is
isolated, allow 5 minutes for the capacitors in the inverter
to discharge before commencing any work on the unit.
LED Indication
PWR
GREEN: Power on & OK,
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.
Heating* Not applicable. See note.
Cooling* Not applicable. See note.
Fault
LED on when a fault is present on unit.
Frost*
Not applicable. See note.
Tx
LED on when the controller is transmitting data.
Rx
LED on when the controller is receiving data.
* Note that the control panel is common to all the Ecosmart products and
will have indicators for functions that are not available in this
particular fan. However these indicators will not be illuminated.
BMS input signals
The fan's response to a 0-10V dc BMS signal is given in the
following table. 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 mode
Local control
0.00
OFF / trickle
0.25
Speed 1
0.50
Speed 2
1.50
Speed 3
2.50
Speed 4
3.50
Speed 5
4.50
Speed 6
5.50
Speed 7
6.50
Speed 8
7.50
Speed 9
8.50
Speed 10
9.50
LED indicators
Pwr
Standby
SL run on
Fan 1
Fan 2
Heating
Cooling
Fault
Frost
Tx
Test
Rx
Cooling Mode*
Heating Mode*
-
-
-
-
0.75
1.00
1.75
2.00
2.75
3.00
3.75
4.00
4.75
5.00
5.75
6.00
6.75
7.00
7.75
8.00
8.75
9.00
9.75
10.00
* Only available on relevant unit
XTRACTOR - ECOSMART Belt Drive Single Fans
Getting started
The Ecosmart Xtract fan is designed for maximum control
flexibility. Apart from the power supply, an enabling signal
is always required to set the fan running.
This enabling signal can be a switched live signal (connected
to the SL terminal of each fan) or an enabling device
plugged in the NET connection.
If an enabling signal is not available, connect a link wire
from 'L' to 'SL'.
Additional sensor and manual control may be added.
For example: to run the fan with a temperature sensor,
connect a link across L to SL (enabling signal) and connect
a temperature sensor in one of the sockets labelled 'NET'.
The fan will now adjust it's speed according to temperature.
To obtain manual control, connect a link across L to SL
(enabling signal) and connect a user control in one of the
sockets labelled 'NET'.
Settings
Setting the Maximum air flow
i) 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.
ii) Switch on the power supply.
NOTE: Ensure unit top cover is securely attached.
iii) Wait for the fan to complete its self-test operation.
iv) Remove the cover of the units external commissioning
box.
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.
Setting the minimum trickle airflow (nominal 40%)
i) Repeat the same procedure as for maximum airflow
above but without the link wire between supply L1 and SL
terminal. Ensure the trickle switch is in the 'ON' position.
The adjustment must be made on the pot marked 'Min'.
ii) Note that the minimum setting (nominally 40%) must be
below the maximum setting, otherwise minimum setting will
be automatically set to be the same as the maximum.
Maintenance - Fan unit
Maintenance Intervals
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. Access to the unit internals is gained by
removing the top cover(s).
Motors
Brush away any dust or dirt from the motor housings and
ensure that the motor vents are unblocked.
Warning - Inverter Speed Control
An Inverter is used to provide speed control. When the fan is
isolated, allow 5 minutes for the capacitors in the inverter
to discharge before commencing any work on the unit.
5
(cont on page 6).
11. 05. 17. Leaflet Number 671177

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