0.01
1
ES-MEV
- Hints & Tips
GUIDANCE NOTES 10
Technical Support Dept.
T. 02920 858585 F. 02920 858586
Leaflet Number 671414 January 2010
Calibration
Status
30
0
60
Run-on
(mins)
50
10
90
Max
Airflow
(l/s)
50
10
90
Min
Airflow
(l/s)
TEST BUTTON
SL RUN ON
MAX SPEED
ADJUST
MIN SPEED
ADJUST
LED
continued overleaf.
Nuaire Group
Western Industrial Estate Caerphilly United Kingdom CF83 1NA
Telephone: 029 2085 8200 Facsimile: 029 2088 7033 Email: [email protected] www.nuaire.co.uk
N
L
SL
Do not use
To OPUS-SPD
speed control
Internal
humidity adj.
To remote
fail indicator
ES-MEV-AVI
Calibration
Status
30
0
60
Run-on
(mins)
50
10
90
Max
Airflow
(l/s)
50
10
90
Min
Airflow
(l/s)
LVT NET TR
1.0. On Installation
Follow the installation and maintenance document
671266 for ES-MEV, paying particular attention to;
1.1.
The chosen location for installation.
a). Mounting the unit using the integral mounting
bracket supplied.
b).
Mount the unit on a non reverberant surface.
c).
The unit can be mounted at any angle.
d).
Make sure that when the unit is mounted
sufficient space is left around the unit for
maintenance and the fixing of the ducting.
e).
If installed with flexible duct special care/
consideration should be made to prevent the
duct being closed off, cracked or twisted,
introducing a high resistance on the system.
1.2.
Electrical.
a).
Pay particular attention to electrical
connections referring to the I&M for correct
method.
b). Isolation of the unit and any switched live
circuits should be achieved through the same
isolator.
230V Switched live
1.3 Setting to work
When initially powered the ES-MEV will self
calibrate, it will try to achieve the duties set by
the MAX and MIN set points.
The calibration process can take around 2 minutes
and is as follows:
■
Unit runs to full speed. (Faster than the max
set point).
■
The unit will slow down and eventually stop.
■
A 10 second wait.
■
It will restart and run at ¼ speed.
■
The unit then settles to the MIN speed.
If, during this process the red LED should illuminate,
ensure there are no switched live or boost signals
present.
Upon completion of the calibration process apply a
switched live (SL), the fan speed and duty should
increase to that of the MAX set point.
When testing a system
a).
The ‘dial a duty’ set points should be positioned
with the MAX at MAX and MIN at MIN, i.e.
giving the widest possible speed control range.
b).
On an existing installation it is important to
observe and note these duty positions should
it be necessary to return to them later.
c).
The SL run on should be set to minimum to
reduce the run on time during test, it is
important to note the position set should it be
necessary to return to it later.
Circuit board connections.
