VES ecovent NRG, NRG557-3D/SP-W, NRG557-3D/SP-DS, NRG557-3D/SP-L, NRG557-3D/SP-F Installation, Operation And Maintenance Manual

VES Andover Ltd Eagle Close Chandlers Ford Ind. Est Eastleigh Hampshire SO53 4NF
Tel: [phone] Fax: [phone] E-mail: [e-mail] Web: www.ves.co.uk

ecovent NRG Air Handling Units

Installation, Operation and Maintenance Manual

1

This manual must be read in full before Installation, Operation and Maintenance
of the units supplied

Please ensure that this document is passed to the end user. This manual forms an integral part of
the product and should be kept for the working life of the product. Additional copies of this
and supporting documents are available by contacting VES or by visiting www.ves.co.uk and
following the ’Download O & M’s’ link.

The following symbols used within this document refer to potential dangers or advice for safe
operation

Indicates hazards associated with electric current and high voltages

Indicates hazards that require safety advice for personnel and/or potential unit/property damage

Indicates important information

Page

Introduction 1

Nomenclature 2

Receipt of Goods & Handling 3

Installation 3

Standard Wiring & Fan Installation 10

Maintenance 14

Declaration of Conformity 15

Extended Warranty 16

The ecovent NRG series are a range of air handling units, direct and inverter driven, with duties
up to 2.5m³/s. Suitable for either plantroom, ceiling void or external locations, each unit will have
been supplied with either no pre-wiring, pre-wired to an external isolator or with fi tted control
panel as specifi ed at the time of order.
The standard operating temperature of these units is –20 to +35°C.

For further technical details regarding dimensions and weights, contact VES on 08448 15 60 60,
quoting the sales order (SO) number and the unit type as found on the unit nameplate or visit
www.ves.co.uk.

VES Ref. ID.826

February 09

Important

Introduction

1
2
3
4
5
6
7
8

1

VES Andover Ltd Eagle Close Chandlers Ford Ind. Est Eastleigh Hampshire SO53 4NF
Tel: [phone] Fax: [phone] E-mail: [e-mail] Web: www.ves.co.uk

ecovent NRG Air Handling Units

Installation, Operation and Maintenance Manual

2

Point Description Point Variants Details (as appropriate)
1 Product NRG ecovent NRG Air Handling Units
2 Unit Size 0...9 Sequential see unit outline for details
3 Fan Type 5 Backward curve centrifugal fan
6 Backward curve plug fan
4 Fan Size 3...9 Sequential
5 Phase -1 230V 50Hz Single Phase

-3 400V 50Hz Three Phase
6 Wiring Null Not appropriate
S Star
D Delta
7 Unit Confi guration /P Plantroom (fl at)
/W Weatherproof (fl at)
/SP Plantroom (stacked)
/SW Weatherproof (stacked)
8 Main Heating Null No Heating

-E Electric Heater Battery

-W LPHW Coil
9 Infi ll Null Single Skinned
/DS 25mm double skinned, mineral wool infi ll
/PB 25mm double skinned, plasterboard infi ll
/EE 50mm double skinned, mineral wool infi ll
10 Handing /RT Right/Top Access
(denotes position of /RB Right/Bottom Access
supply fan position LIDAF) /LT Left/Top Access
/LB Left/Bottom Access
/R Right
/L Left
11 Main Filter Null No fi lter
/F EU4 Pleated Filter
/R5...R8 High effi ciency pleated fi lter
12 Control Panel Section Null No fi tted controls
/I Pre-wired isolator/s
/CP Fitted control panel
/FS Fitted speed controller/s
/CS Fitted control panel/speed controller/s
13 Twin Fan Null No twin fan
/TF Twin Fan Extract confi guration
14 Colour Null Galvanised fi nish
/00A05 Powdercoated fi nish, BS00A05 etc...
15 Powder Coat Type Null As colour
/IT Internal powdercoated only
/BT Internal/External powdercoated
16 Special /S Special (non-standard) Unit

Nomenclature

Part Number Coding

Typical Example

2

NRG557-3D/SP-W/DS/L/F/CP/S

NRG 5 5 7 -3 D /SP -W /DS /L /F /CP /S

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

VES Andover Ltd Eagle Close Chandlers Ford Ind. Est Eastleigh Hampshire SO53 4NF
Tel: [phone] Fax: [phone] E-mail: [e-mail] Web: www.ves.co.uk

ecovent NRG Air Handling Units

Installation, Operation and Maintenance Manual

3

Immediately upon receipt of goods, check for possible damage in transit paying particular
attention to fan impellers, coil connections and unit casing. Prior to installation please check
to ensure alignment and smooth rotation of the impeller after transit. Also check to ensure
that any ancillary items are included. These will normally be supplied fi tted or, in the case of
small items, taped to the unit.
In the event of any damage having occurred or if any item is found to be missing, it is
essential to inform VES Andover Ltd. within 7 days of delivery quoting sales order number
and the unit type, as found on the unit nameplate.
After this period, VES would be unable to accept any claim for damaged or missing goods.

Receipt of Goods

& Handling

3

The entire system must be considered for safety purposes and it is the responsibility of the
installer to ensure that all of the equipment is installed in compliance with the manufacturer’s
recommendations, with due regard to the current HEALTH AND SAFETY AT WORK ACT and
conforms to all relevant statutory regulations.
Where a unit is installed so that a failure of components could result in injury to personnel,
precautions should be taken to prevent such an injury. If the unit is installed where there is a
reasonable possibility of persons or objects coming into contact with the impeller whilst
operational, a guard should be fi tted or steps taken to prevent this.
It is the installer’s responsibility to ensure that access panels are not obstructed in any way and
safe working access for maintenance must be provided in accordance with Health and Safety and
Building Regulations. For confi rmation of required access please see the appropriate unit outline
drawing; note that some access doors are hinged.
For optimum unit performance, careful consideration must be paid to the location of the unit in
relation to the ductwork and associated items; placing the unit directly adjacent to a bend in
ductwork will impede airfl ow and reduce performance.
Consideration must also be given by the installer for adequate illumination of the unit location in
order for safe maintenance.

Handles, lids, housings and coil connections must NOT be used as lifting points

Larger NRG units are sectional. It is important to ensure that all sections are joined together
securely prior to positioning and installation.

Units that are supplied in one section as standard will be factory assembled with the appropriate
fi xings. Units over 2.5 metres in length and units with fi tted silencers may be supplied in
sections, and some site assembly will be required. Units supplied in sectional form should be
assembled using self-adhesive rubber tape at the joints prior to assembly so as to prevent air
leakage; replace with similar if damaged.

Units should only be supported using the support feet or channel base as provided by VES with the
unit. Contact VES before attempting to support the unit using alternative methods.
Only experienced fi tters should undertake this work.
Take necessary safety precautions when working in elevated positions.

For associated components (inverters, speed controllers, controls) please refer to the relevant
accompanying O&M

Installation

4

Caution

Caution

Important

Important

When moving the unit, handle with care and
in such a manner as to avoid damaging the
external fi nish as this may reduce the ability to
resist corrosion.
Units are to be rigged and lifted using
spreaders, taking into account the weight of
the unit, and lifting gear should be arranged so
as not to bear on the casework see right.

Lifting detail

Fig.

VES Andover Ltd Eagle Close Chandlers Ford Ind. Est Eastleigh Hampshire SO53 4NF
Tel: [phone] Fax: [phone] E-mail: [e-mail] Web: www.ves.co.uk

ecovent NRG Air Handling Units

Installation, Operation and Maintenance Manual

4

Continued

Size 0/1/2 units are supplied with feet suitable for fl oor or ceiling-void mounting, either by use of
drop-rod mounting, in either top or bottom access orientation, with airfl ow in the horizontal plane.
For alternative mounting please consult your outline drawing as supplied with the unit, or refer to
VES Customer Services for further information.

When hanging units from drop-rods, ensure that the load is evenly spread and that all feet are used
within the support. It is important that the unit is level to ensure all components operate correctly.

Secure drop rods/unit with M10 fi xings as shown below .
Self-levelling feet are available for fl oor mounting, with M10 fi xings as per drop rods . If required
the unit can be further secured to the fl oor via knockout fi xings holes on the feet, fi xings to be
supplied by others .

Standard units should be mounted in the horizontal plane, level with lid access to the top or
bottom. For alternative mounting please consult your outline drawing as supplied with the unit,
or refer to VES Customer Services for further information.

Size 0 unit handing is determined by the location of the extract airstream, with the drain pan
located on the air-off side of the heat exchanger as shown in , the default setup as shown.

Handing reorientation is ONLY appropriate when site conditions dictate the use of the condensate
drain. If the drain is redundant the unit can be fi tted without alteration, with fans to the left or right
and access top or bottom.

Installation

Size 0/1/2

Size 0 unit

handing

4

Important

Important

Default unit setup

with fans to the left hand side looking in
direction of supply airfl ow

drain

Reorientated unit setup

with fans to the right hand side looking in
direction of supply airfl ow

supply
airfl ow

extract
airfl ow

Size 0 unit

reorientation

Size 0/1/2 unit

mounting

VES Andover Ltd Eagle Close Chandlers Ford Ind. Est Eastleigh Hampshire SO53 4NF
Tel: [phone] Fax: [phone] E-mail: [e-mail] Web: www.ves.co.uk

ecovent NRG Air Handling Units

Installation, Operation and Maintenance Manual

5

Continued

The unit comes fi tted with an ABS drainpan as standard, for use with an optional peristaltic pump.
See later in this section for instruction on fi tting the pump and sensor.
Should the unit handing need alteration follow the following instructions in fi gure

Installation

Size 0

Top access unit

drainpan

reorientation

Fig.

4

Remove the lid.

Using a cross-head screw driver, remove the
four support covers as shown, retaining the
screws. Take especial care when working
around the speed controller section.

Remove the heat exchanger, carefully
lifting straight up and out, taking care not to
damage the heat exchanger fi ns or seal whilst
doing so.

Withdraw the drainpan, turn anticlockwise
90° (so that the drain part of the tray is
adjacent to the other fan) and replace.
Note: fi tting the pump sensor can be easier
when the drain pan is outside the unit.

Replace the heat exchanger and silicon into
place along all supporting upright angles as
shown.

Replace and secure the four support covers,
taking care to ensure the heat exchanger
assembly is safely held in position.

Replace the lid, ensuring all fasteners are
closed.

This drain is NOT suitable for trapping by traditional trapping methods

Important