Air Vent SRE1EC User manual

®
Air Handling Units -
External (S E/EC)
Installation, Operation
and Maintenance Manual
Introduction
Designed for external applications, the RE/EC range en-
compasses 4 models of direct driven centrifugal air han-
dling units with airflow duties up to 1.4m3/s.
Motor windings are fitted with an auto-reset thermal
cut-out.
Motors are pre-wired to an external terminal box
trickle – boost speed controller and isolator.
Units complete with integral G3 panel filter and electric
heater battery.
General Construction
Casework is manufactured from 0.9mm to 1.6mm thick
powder-coated (B 10A05 as standard – other colours on
request) sheet steel with an ‘O’ class foam / barrier mat
sandwich insulation to provide acoustic insulation.
Double skinned as an option.
Access is via a removable top cover.
Inlet via bird-mesh protected cowl.
Inspection Upon eceipt Of Goods
Immediately upon receipt of any goods, a careful inspec-
tion should be undertaken to ensure neither damage nor
missing parts. Particular attention should be paid to the
fan impeller and casework.
In the event of such damage or loss having occurred, in-
form AVT (01264 356415) WITHIN 3 WO KING DAYS
of the delivery date, giving the serial number which can
be found on the name-plate. After this period we will be
unable to entertain any claim for loss or damage.
Handling
Units must be handled with care to avoid damage, par-
ticularly units being craned into position. Attention must
be paid to the overhanging weather lid and plastic finish..
A spreader bar should be employed to prevent damage
to the top of the unit.
Installation
When installing our equipment, the following must be
observed:
Safety: It is the responsibility of the installer to ensure
that the installation complies with the legal regulations
and the current HEALTH AND SAFETY AT WO K ACT.
Ambient Temperatures: The range of units covered by this
manual are designed for use in an environment where the
ambient air temperature is unlikely to exceed 40ºC.
Mounting / Positioning: These units must be mounted
in the horizontal plane and on a completely flat base.
Other options are available on request.
Duct Connections: Adjoining ductwork should always be
independently supported to avoid undue stress on the
unit casing. Impellers are statically and dynamically bal-
anced, and anti-vibration mounts and fast clamps are
available to suit.
Access: All units are designed with easily removable
components for maintenance purposes. ufficient room
should be allowed adjacent to the unit to allow compo-
nents to be withdrawn.
Electrical Wiring
Electrical supply must be fully isolated before attempting
any work on the unit.
All wiring should be carried out by a competent electri-
cian and should comply fully with the current I.E.E. Wiring
Regulations.
The electrical supply must be as stated on the nameplate.
When the wiring is complete, check for free and correct
rotation of the fan impeller
Maintenance
3 Monthly: Filters should be insrected and if found to be
heavily soiled, replaced.
6 Monthly: The fan impeller should be carefully cleaned
with a brush. This will prevent the impeller from becom-
ing unduly dirty and unbalanced.
12 Monthly: The security and integrity of all fastenings
should be checked, particularly the motor mounting
frame.
01 T: [phone] / www.airventtechnology.co.u
Motor
Power Phase FLC
S E1EC 490 W 1 ph 3.0 A
S E4EC 510 W 1 ph 3.1 A
S E6EC 450 W 1 ph 2.9 A
S E7EC 640 W 1 ph 2.9 A

02 T: [phone] / www.airventtechnology.co.u
Air Handling Units - External - S E/EC
Installation, Operation & Maintenance Manual
AHUs - EXTENAL - EHB
Model A BCDEkg
S E1-EC 135060045065058057
S E4-EC 135075045080058066
S E6-EC 1600825500875580 78
S E7-EC 165090060095068097
CUSTOME OPTION
BOOST ENABLE
230V SWITCHED LIVE
S EED CONT OLLE
SUPPLY FAN
ISOLATO
SUPPLY - 230V 50 Hz
®

®
AV T reserves the right to alter srecifications without notice as part of its policy of continuous development Oct2020SRE/ECO&M E & O.E
Air Handling Units - Internal - S E/EC
Installation, Operation & Maintenance Manual
Electric Heater Battery
Introduction
Heaters of the sheathed element type provide a safe
means of heating using electricity. The surface temper-
ature of the elements is relatively low and they will not
give an electric shock.
Heaters are suitable for either horizontal or vertical air-
flow, though care should be taken to ensure the cutout
is near the top of the duct.
An even flow of air across the elements MUST be main-
tained and the velocity should not fall below 1.75m/s.
The heater should be positioned away from materials
that may be damaged by direct heat.
Controls
A suitable control system should be installed which must
include a timer to keep the fan running for a period of
2 minutes after the heater has been switched off.
A range of compatible control panels is available from
AVT.
If a sreed controller is being fitted, it MUST NOT allow
the fan to be turned off independently of the control
panel nor must it allow the air volume to FALL BELOW
that stated on the heater nameplate.
Testing
Elements are tested prior to dispatch and are within a
tolerance of +7.5W.
Elements stored in damp conditions may require drying
out in order to achieve the correct insulation levels.
Contact AVT in case of uncertainty.
Wiring Instructions
1. The electrical supply to the heater should be either
1ph or 3ph (with separate neutrals) - refer to nameplate
for clarification.
2. Electrical cables should be of a high temperature, in-
sulated type (i.e. silicone rubber or fibreglass) and be in-
stalled in accordance with current IEE wiring regulations.
3. The heater is fitted with a manual reset, thermal over-
load which will break the contacts when the duct tem-
perature exceeds 130ºC. This should be wired in series
with the operating coil of the control circuit.
4. Ensure a suitable earth connection is made to the
terminal provided.
5. The element studs are fitted with terminal pillars
and care should be taken not to over tighten and cause
damage to the elements.
6. Always fit an isolator for maintenance of the heater.
Component Layout
HEATING
ELEMENT
TE MINAL
PLATE
ELECT IC HEATE S MUST BE WI ED AND
INSTALLED IN ACCO DANCE WITH THE
FOLLOWING DIAG AMS AND INT UCTIONS
WHE E * = ANY NUMBE OF
ADDITIONAL STEPS
TE MINAL
PILLA
THE MAL
OVE LOAD
Air Vent Technology Ltd
56 eith Way, Portway Industrial Estate
Andover, Hampshire, SP10 3TY
T: [phone]
E: [e-mail]
www.airventtechnology.co.uk
Part of the Vectaire Group of Companies