5
22. 02. 22. Document Number 611280
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
DAVE Extract (DE)
Installation Manual
6.3 Electrical Connections
6.3.1 Mains Connections
Mains cables should be suitably sized and terminated at the terminals
shown on the appropriate diagram.
6.3.2 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).
7
Ecosmart Net Connections
6.3.3 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
8
SL Terminal
6.3.4 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.
6.3.5 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.
9
Volt Free Relay Contacts
RUN
FAULT
Run signal Fault signal
6.3.6 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.
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.
6.3.7 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.
6.3.8 Other Low Voltage Cables
Follow the basic principle (as 5.1.6). Keep the cable run as short as
possible, less than 50 metres.
6.3.9 Commissioning Panel Details
A Commissioning Procedure document (leaflet No. 671153) is available
on request from the Nuaire Technical Library, Tel: 029 2088 5911.
LED indicators
Min
Max SL run on
Trickle
Test
1
0
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
10
Commissioning Panel
6.4 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.