2
Installation and Maintenance
ECOSMART Direct Drive Indoor Twinfans
21. 10. 16. Leaflet Number 671114
Wiring Connections
Fig. 4 Control module connection details.
1.0 Connections
a) Control Connections
(see fig. 4).
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, junction box (product code ES-JB)
should be used.
See ‘d’ Data Cable Installation.
Switch Live (SL) terminal
- A signal of 100-230V a.c. will
activate the fan.
Note that a signal from an isolating transformer will produce
an unpredictable result and is not recommended.
b) Damper connections
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 to
indicate the damper has reached its operating position.
If the return signal is not present, the fan will wait for 1 minute
before starting.
Note: If a damper is not fitted, connect a link wire from OP
to RET. This will cancel the delay.
c) 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.
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).
N
N
NET
Fan 2
Fan 1
0V
0-10V
Run
Run
Fault
Fault
Net connections for Ecosmart devices
Link wire
Fuses
F1 & F2 = 20mm* type T fuse for fan 1 & 2
F3 = 20mm 1A type T fuse for dampers
F4 = 20mm 1A type T fuse for control circuit
*Rated to fan size.
L
L
SL
OP
CL
N
RET
240V 1 ph 50Hz
Switch live signal
Connection to
damper
5A resistive
0.5A inductive
F3
F4
Volt Free Contact
RUN Signal
Volt Free Contact
FAULT Signal
Note:
Remove the link wire if a
switched live signal is
present or a enabling device
is connected to the NET
Isolation - Before commencing work make sure
that the unit, switched live and Nuaire control are
electrically isolated from the mains supply.
Motor Electrical Information
Table 3.
230V single phase 50Hz only
Unit
Fuse
Code
rating
EST 1
2A
EST 2
2A
EST 3
3.15A
EST 4
3.15A
EST 5
6A
EST 6
8A
EST 8
10A
EST 9
10A
Electrical Detail
Because the run and start currents depend upon the duty and
associated ductwork of an individual unit, run currents will be
exceeded if the unit is operated with its cover removed. It is
therefore recommended that the unit is not run for prolonged
periods in this condition.
Testing after installation
Ensure that the Fan unit and any specified controls are fitted
securely according to the instructions.
Switch on the mains supply. push the test button to run each
fan and check that they run satisfactorily.
If a switched live signal is used, activate this signal and check
that the fan runs. De-activate the switched live signal and check
the run-on-time; adjust if necessary.
Adjust the set point of any sensors and PIR; check that they
function correctly.
Adjust the maximum and minimum airflow (if required) by
following the commissioning procedures.
