3.0 Electrical Details
To gain access to the units power supply and control panels
remove the access cover as shown in figure 8.
3.1 Connections
3
Installation and Maintenance
OPUSDC-SA-60 Student Accomodation Duct Mounted Extract Fans
Figure 10. Ecosmart control (PCB).
Figure 9. 24V power supply.
SWL
N
L
Min Max Run On Pwr Standby Fan 1 Fan 2
Fan 1
Fan 2
Figure 8.
Mains cable
and clamp.
‘Net’ connections for
Ecosmart devices.
Switch to activate
continuous trickle.
230V
1N
50Hz
Mains
Power Consumption
ES-Opus ES-Opus ES-Opus ES-Opus
DC 40
DC 60
DC 75
DC 110
Unit input power (watts)
18
44
33
90
Full load running current (amps) 0.14
0.32
0.26
0.61
Ecosmart control
(see figure 10)
(a) Net -
the 4 IDC plug-in 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.
NOTE: Do not run the SELV data cable in the same
conduit as the mains cable and leave a 50mm
separation with any power cables.
(b) Volt Free Relay Contacts
Note that 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. These
contacts are rated at 5A resistive, 0.5A inductive.
(c) Run connections
These contacts are closed when the fan is running.
Fault connections - No fault
= the contacts are closed.
Fault
= the contacts are opened (this includes no power
supply at the unit).
(d) Data Cable installation
A 4-core SELV data cable is used to connect devices such
as sensors to the fan and for interconnecting multiple fan
units.
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.
(e) 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.
(f) LED Indication
PWR
GREEN: Power on and OK, RED:
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.
Volt free relay
contacts.
RUN FAULT
ON
OFF
IMPORTANT
Isolation - Before commencing work make sure that the
unit, switched live and Nuaire control areelectrically
isolated from the mains supply.
12. 05. 17. Leaflet Number 671739
