VES ecovent Installation, Operation And Maintenance Manual

1

ORIGINAL INSTRUCTIONSVE S And over Ltd Eag le Cl ose Cha ndl ers Fo rd In d. Es t

Eastleig h Ha mps hire SO 53 4N F

Tel: [phone] Fax: [phone] E-mail: v esltd@v es.c o.uk Web: ww w.ves. co.u k

Heat Recovery Unit

Installation, Operation and Maintenance Manual

®

VES Ref. ID.986

Issue F

August 2014

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, advice for safe operation or
important points of reference

Indicates hazards associated with electric current and high voltages

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

Indicates important information

page

Introduction 1

Nomenclature 2

Receipt of Goods & Handling 3

Installation 3

Standard Wiring & Fan Installation 6

Maintenance 13

Declaration of Conformity 15

Extended Warranty

The Ecovent® EVX series is a range of Heat Recovery units, with duties up to 2.5 m³/s. Suitable for

either plantroom, ceiling void or external locations. As standard, each unit will have been supplied

pre-wired to an isolator or fitted control panel, as specified 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

alternatively visit www.ves.co.uk.

Warning

Caution

Important

Contents

Important

Introduction

1
2
3
4
5
6
7
8

1

2

ORIGINAL INSTRUCTIONS

VE S And over Ltd Eag le Cl ose Cha ndl ers Fo rd In d. Es t East lei gh Ha mp shire SO5 3 4NF
Tel: [phone] Fax: [phone] E-mail: v esltd@v es.c o.uk Web: ww w.ves. co.u k

Heat Recovery Unit

Installation, Operation and Maintenance Manual

®

Nomenclature

Part Number Coding

Point Description Point Variants Details (as appropriate)
1 Product EV Ecovent® Heat Recovery Units
2 Heat Recovery type X Crossflow plate heat exchanger
3 Unit Size 1...8 Sequential see unit outline for details
4 Fan Type 1 Backward curve plug fan (AC)

4 Backward curve centrifugal EC fan
5 Fan Size 3...9 Sequential
6 Phase -1 230V 50Hz Single Phase

-3 400V 50Hz Three Phase

7 Unit Configuration /FP Flat Plantroom

/FW Flat Weatherproof

/SP Stacked Plantroom

/SW Stacked Weatherproof
8 Main Heating Null No Heating

-E Electric Heater Battery

-W LPHW Coil

9 Infill /DS 25mm double skinned, acoustic infill

/EE 50mm double skinned (EN1886 standard)
10 Handing /LT Left/Top Access

(denotes position of /RT Right/Top Access
supply airflow LIDSAF) /LB Left/Bottom Access

/RB Right/Bottom Access

/L Left

/R Right
11 Main Filter Null No filter

/G4 EU4 Pleated Filter

/F7 Hi gh eff ic iency pleated filter
12 Twin Extract Fan Option Null N/A

/TF Twin Extract Fans
13 Control Panel Section Null No fitted control s

/I Pre- wired iso lator

/CPSC Fitted control panel

/ISCP Fitt ed isolat or/sp ee d contr oller
14 Colour Null Ga lva nis ed fi nis h

(powdercoat standard for /R7004 Powdercoated finish, RAL7004 etc...

weatherproof units)

15 Powder Coat Type Null As colour

/IT Internal powdercoated only

/BT Inter nal/Ext er nal powde rc oated

16 Special /S S pe cial (non-s tandard ) Un it

EVX143-1/FP-W/DS/RT/G4/CPSC/R5015/S

EV X 1 4 3 -1 /FP -W /DS RT/ G4 /CPSC /R5015 /S

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

Typical Example

2

3

ORIGINAL INSTRUCTIONS

VE S And over Ltd Eag le Cl ose Cha ndl ers Fo rd In d. Es t East lei gh Ha mp shire SO5 3 4NF
Tel: [phone] Fax: [phone] E-mail: v esltd@v es.c o.uk Web: ww w.ves. co.u k

Heat Recovery Unit

Installation, Operation and Maintenance Manual

®

Immediately upon receipt of goods, check for possible damage in transit paying particular attention to fan
impeller

s, 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 fitted 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.

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 fitted 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 confirmation of required access please see the
appropriate unit outline drawing.
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
airflow and reduce performance. Consideration must also be given by the installer for adequate

illumination of the unit location in order for safe maintenance. Further consideration should be given
to the unit ’s position and secured into place as appropriate. This is especially important with external

mounting as the wind and elements may effect the overall stability and safety of the unit.

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

When moving the unit, handle with care and in such a
manner as to avoid damaging the external finish 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.

Larger EVX 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 fixings.
Units over 2.5 metres in length and units with fitted 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. It
may be necessary to remove some panels in order to access the section fixings; ensure all removed panels
are repositioned and secure correctly.

Units should only be supported using the support feet as provided by VES with the unit. Contact VES
before attempting to support the unit using alternative methods. Only experienced fitters should

undertake this work. Take necessary safety precautions when working in elevated positions.

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

Important

Caution

Receipt of Goods

& Handling

Installation

3

Lifting Detail

Fig.

4

Caution

Important

4

ORIGINAL INSTRUCTIONS

VE S And over Ltd Eag le Cl ose Cha ndl ers Fo rd In d. Es t East lei gh Ha mp shire SO5 3 4NF
Tel: [phone] Fax: [phone] E-mail: v esltd@v es.c o.uk Web: ww w.ves. co.u k

Heat Recovery Unit

Installation, Operation and Maintenance Manual

®

Continued

Ecovent® EVX units size 1 to 5 are supplied with feet suitable for floor or ceiling-void mounting,
either by use of drop-rod mounting, in either top or bottom access orientation, with airflow 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.

Secure drop rods/unit with the appropriate fixings as shown below

.
Self-levelling feet are available for floor mounting, with fixings as per drop rods . The unit
can be further secured to the floor via knockout fixings holes on the feet, fixings to be supplied
by others

.
It is recommended that this is always carried out with stacked units as there is a greater risk of
in sta b ili ty.

When hanging units from drop-rods, ensure that the load is evenly spread and that ALL feet are used
within the support. Ensure that the drop rod used is selected appropriatedly to the load of the unit.

It is essential that the unit is level to ensure all components operate correctly. This is particularly
important with twin extract fan units as this may otherwise cause the backdraught flaps to operate
incorrectly.

Unit mounting detail

Fig.

Installation 4

Important

On EVX/ -E units, an electric heater battery (EHB) will be installed. Supply to the heater should be 1Phase
or 3Phase with separate neutrals; confirmation of this can be found on the unit nameplate. Cables should
be of silicone rubber, fibreglass or of a similar high temperature insulated type and be installed to current
I.E.E. Regulations, ensuring a sufficient earth connection to the terminal provided.
Care should be taken not to overstrain the terminal pillars as this may permanently damage the elements.

The heater is fitted with a manual-reset high temperature cutout with normally closed (NC) terminals and
is set to break if the duct temperature rises above 130°C.
It is important that the cutout is connected to the safety circuit so the heater is isolated in the event of
overheating caused by airflow failure.

The electrical supply must be isolated before attempting to reset the manual cut-out and should be given
sufficient time to cool. For further information regarding electric heaters please see VES Ref. ID431.

If a speed controller is fitted to the system, it must not stop the fan independently of the control system,
or allow airflow to fall below the stated volume on the electric heater battery. Suitable speed controllers
without on/off switches are available from VES Andover.

Electric Heater

Batteries

Caution

5

ORIGINAL INSTRUCTIONS

VE S And over Ltd Eag le Cl ose Cha ndl ers Fo rd In d. Es t East lei gh Ha mp shire SO5 3 4NF
Tel: [phone] Fax: [phone] E-mail: v esltd@v es.c o.uk Web: ww w.ves. co.u k

Heat Recovery Unit

Installation, Operation and Maintenance Manual

®

Continued

A dra in pan is fitted to all uni ts . Should conditions mean that con de ns ation is likely ensure
that the unit connected to an appropriate waste system. Refer to manual VES Ref. ID665 for
further information on trapping details.
Consideration should be given to the height required for the trap to function correctly and that
the unit may need additional base support in order to accommodate this correc tly.
For EVX unit s 1 - 5 an opti onal peristaltic pump is available. For pump fitting and inst allatio n
instructions see the documentation acco mp anying the pump assembly.
The drain pan is fitted with an internal spigot suit able for con nection with a push-fit straight
connector, to be supplied by others (EVX 1 - 5 Ø15 mm, 6 - 8 Ø22 mm). Terminate through the
case onsite as required, ensuring that any swarf is removed. Should it be required to remove
any component, ensure that it is replaced correctly.

Coils should be piped according to any relevant local code s of practice. Where threaded
connection s are supplied, the onl y approved method of jointing method is by use of Boss white
and hemp. The thread fitted to the coil is to be supported at all times whilst making joints. All
exter nal pip ing is to be supp orted independently fro m the coil. Fluid filters are recommended.

It is important that water and steam coils are protected against dama ge from extreme weather
conditions duri ng the winter season . If the water is allowed to freeze in the coil system,
damage may occur pote nt ially bur sting pip es and resulting in emerg ency prob le ms.
Fitting a frost thermostat at the unit inlet and ensuri ng that boilers run continuously in low
ambient tempera tures can help to prevent this.

Heating coils do not cool immediately when the hot water supply is cut off. The residual heat
must be diss ipated to avoid damage. The continuous runnin g of the fan after shutdown
resolves this, by operation of a run-on timer.
The recommended length of run-on is 2 minutes minimum.

On Ecovent® EVX / -W units, a Low Pressure Hot Water (LPHW) coil will be installed. The coils
are normally suitable for LPHW at 82°C flow and 71°C return temperature. LPHW coils are
suppl ied as standar d with an air vent and drain plug located on the pipe work immediately
adjacent to the coil connections on the AHU. The air vent should be at the highest point, with
the drain at the lowest. The coil should be regularly vented so as to avoid potent ial air locks,
resulting in a fall off of duty.
It is recommended that a check be made as to whether any treatment is required to the water
supply for preventio n of corrosion and scaling of the equ ipment. Information regarding the
necessary action to be taken can be obtained from the relevant Local Water Supply Authority.

The unit will have been supplied with connectio ns either left or right-hand side looking in
direc ti on of airflow. Pleas e see order acknowledgement for confirmation of this handi ng .
Should you need to alter this please consul t VES as unit adju stment may invalidate your
warranty.

Installation 4

Caution

Typical LPHW Coil

Fig.

Caution

Coils

LPHW Coils

Airflow

Flow

Return

Condensate Trapping