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
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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

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Heat Recovery Unit

Installation, Operation and Maintenance Manual

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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

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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

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Installation, Operation and Maintenance Manual

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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

6

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Heat Recovery Unit

Installation, Operation and Maintenance Manual

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Installation 4

DX Cooling Coils

Typical DX Cooling Coil

Fig.

Continued

All cooling coils hav e fully boxed and insulated cas es , with moisture eliminators fitted as
stand ard. The dra in pan will requi re trapping to the drain line , for furthe r information plea se
see VES Ref. ID665. DX and Condenser Coils must be connected to systems in accordance with
accepted refrigeration codes of practice and if fitted upstream to steam or water coils, care
must be taken to ensure that the air temperature does not drop below 0°C.
For units supplied with condensi ng units, refer to the approp riate sup porting documentation.

Eliminators

Liquid

Suction

Drain

Airflow

Typical Twin Extract

Fan Arrangement

Fig.

For specific appli ca ti ons that require const an t ventilation a twin extract opti on is available.
To ensure correct operation it is important that the unit is mounted level and that the
backdraught shutters move freely and are not obstructed by cabling or nearby components
which may have moved in transit.

The backdraught shutters require some pressure to function correctly ; in this application it is
not recommended to run the extract fans below half speed (5 V).

Twin Extract

Fan Option

Important

7

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Heat Recovery Unit

Installation, Operation and Maintenance Manual

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Standard Wiring

& Fan Installation

5

Important

Warning

Warning

The electrical supply must be fully isolated before attempting to affect any work on this unit.
All electrical connections to any unit must be carried out in accordance with the current edition of the
I.E.E Regulations, only competent Electricians should be allowed to affect any electrical work to our units.

It is recommended that the cable entry point should be at the end of the control section as

sho wn below in figure

.

It is the responsibility of the ins ta ll er to ens ur e that a suitable cable glan d (giving ade qu at e
prote ction and strain relief ) is fitted , and in doi ng so also ensure that no interna l compo nents
are dam ag ed during thi s installation. Make certain all swarf is removed befo re use.

It is the customer’s responsibility to supply earth fault protectio n through the bui lding
installatio n device and a dedic at ed, isolated power supply with overload pro te ct ion, to

account for motor start up currents. See below for specific fan details Fig. .

Do not connect any uni t to an electrical supply voltage outside of th e specification.

The fol lowing wiring diagrams are a guid e to instal li ng the stan dard fan and actuator options
found on Ecovent® EVX units. If in any doubt, for units with fitted VES controls or for special
versions of the units, consult the wiring diagram in your document pack or contact VES
Customer Services Department on 08448 15 60 60, quoting the sales order (SO) number and unit
type as found on the unit name plate.
For incorrect rotation of single phase fans, check with the VES Service Department for advice,
on 08448 15 60 60.

Fig.

Recommended

cable entry points

Re comme nded
cable entry points

EVX Unit Fan

Motor Power

(kW)

F.L.C.

(A)
1 ZD0301 0.23 1.65
2 ZD0411 0.32 1.70
3 ZD0501 0.40 2.10
4 ZD0701 0.75 3.90

EVX Unit Fan

Motor Power

(kW)

F.L.C.

(A)

S.C.

(A)
5 ZD0903 1.25 2.10 n/a
6 ZA06H3

2.20 4.85 5.60

7 ZA07J3

3.00 6.30 35.28

8 ZA09J3

3.00 6.40 35.28

Model 230V 1PH 50Hz 400V 3PH 50HzModel

Standard Fan Details

Fig.

&

8

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Heat Recovery Unit

Installation, Operation and Maintenance Manual

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Standard Wiring

& Fan Installation

5

Standard wiring arrangement

Fan Terminals for Ecovent®

EVX143

Fig.

Continued

PE N

L1

1 ~ 200...277 V

50 Hz

+

J3
J2
J1

PE N L1

E1 Analog In

A1 T

acho Ou

t OC

GN

D

10 V DC

Out

GNY

E

BU

BN

YE

WH

BU

RD

10 kΩ

External speed setting

Input

0...10 V

N L1PE

Line

1 ~ 200...277 V

50 Hz

10 kΩ

+

PE N L1

Ext ttingernal speed se

10 V DC

Out

(I

max

= 10 mA)

D1 Dig

ital In 1

GND

A2 Status Out OC

Signal connection

GNY

E

BU

BN

RD

BU

GY

11 14

WH

WH

E1 Analog In 1

A1 Ta

cho Out

OC

A

ID

B

GND

A

ID

B

GND

YE

WH

GN

11 14

Input

0...10 V

K1

Contact rating

max. AC 250 V 2 A

Standard wiring arrangement

Fan Terminals for Ecovent®

EVX244 & EVX345

Fig.

9

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Heat Recovery Unit

Installation, Operation and Maintenance Manual

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Standard Wiring

& Fan Installation

5

Standard wiring arrangement

Fan Terminals for Ecovent®

EVX447

Fig.

Continued

24V 10V GND D1 E1 11 14

DC Out

(I

m

ax = 70 m

A)

DC Ou

t

(I

ma

x = 10 m

A)

Dig

ital In 1

Analog In

1

NL1PE

L1

L2 L3

PE

L1

N

K1

Contact rating

max. AC 250 V 2 A

Input

0...10 V

+

Ex

tting

ternal

speed
se

10 kΩ

10 kΩ

10 V

GN

D

E1

1~ 200...277 V

50 Hz

24V 10V GND D1 E1 11 14

DC Ou

t

(I

max =

70 m

A)

DC

Out

(I

ma

x = 10 m

A)

Digital

In 1

Analo

g In

1

L3

L1

3~ 380...480 V

50 Hz

PE

L1

L2 L3

PE

L1

N

K1

Contact rating

max. AC 250 V 2 A

Input

0...10 V

+

Ex

tting

ternal

speed
se

10 kΩ

10 kΩ

10 V

GND

E1

L2

Fan Terminals for
Ecovent® EVX549

Fig.

10

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Heat Recovery Unit

Installation, Operation and Maintenance Manual

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Standard Wiring

& Fan Installation

5

Standard wiring arrangement

Fan Terminals for Ecovent®
EVX616, EVX717 & EVX819

Fig.

Continued

W2 U2 V2

U1 V1 W1

L1 L2 L3 PE

AC 24 V 50 Hz / DC 24 V

BKORRD WH

Y

U

1 32 5

DC 0…10 V

NOT USED

– +

T

~

CM24-SR/NM24A-SR Damper Actuator
To isolate from the main power supply, the system must incorporate a device which disconnects

all the phase conductors

Warning

Standard wiring arrangement

Damper Motor Terminals

Fig.

3~ 400 V 50 Hz

90

1

0

5

1

2

0

6

0

75

90

1

0

5

1

2

0

45

30

1

0

Standard wiring arrangement

Valve Actuator Terminals

(EVX1-5)

Fig.

1

2

3 4 5

Terminal Box

0 10 V‐

Valve

Frost

Sensor

24

V

SEN

SOR

SE

NSOR

GND

SGS65... Valve Actuator
To isolate from the main power supply, the system must incorporate a device which disconnects

all the phase conductors

Warning

11

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Heat Recovery Unit

Installation, Operation and Maintenance Manual

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Continued

Prior to starting the unit it is important to ensure that the fans are free running, and should any
components have moved during transit take care to ensure they are realigned to allow correct
opera tion/rotati on. The same should be applied to any wiring looms whi ch may have become
unfastened; ensure that loose wiring is securely stowed away from any moving components.
Inverter-driven plug fans are supplied as a balanced assembly and should not be disassembled,
however the assembly is secured for transit with bolts as shown; these should be removed prior
to start-up.

As all units in the Ecovent® EVX range fea ture tapped inlet rings it is possible to establish the
vol ume flow rate by measuring the static pressure rise into the fan.
Units 1,2,3,4 and 5 feature EC Centrifugal fans and units size 6, 7 and 8 are supplied with fitted
3-pha se inverters for fan speed cont rol commissioning; see the accompanying inverter
documentation for fur th er operational details.
The centrifugal fans have infinite speed adju st ment, the benefits of real energy savings are
apparen t when the fan speed is reduced; this is best demons trated when used in conjunction
with addi ti onal sens ors suc h as air qua lity or occupanc y.
Using a micro manom eter and adjusting the fan spe ed it is pos sible to commissio n each fan to
the required air volume. Each fan sectio n has a diff erential pressu re tapp ing con nection point;
by connecting your micro manometer to the appropriate pitot a different ial pressure reading
can be taken. If the unit feat ures a fitted control panel this action can be undertaken within
the programming availa ble; see the accompanyin g con trols documentation for further opera­ti ona l det ail s.

Standard Wiring

& Fan Installation

5

Prior to starting the unit it is important to ensure that the fans are free running, and should any
components have moved during transit take care to ensure they are realigned to allow correct operation/
rotation. A trial spin by hand should indicate if the fan is rubbing. To align, losen either the fan plate fixings
or the inlet ring, adjust and retighten, see figure

above. The same should be applied to any
wiring looms which may have become unfasten ed; ensur e that loose wiring is securely stowed
away from any moving components.

Fan alignment details

Fig.

Transit bolt removal

Fig.

Pressure tapping

Fig.

Important

12

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Installation, Operation and Maintenance Manual

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Continued

This differential pressure compares the static pressure in front of the fan inlet ring with the static pressure
in the inlet ring of the narrowest point. The differential pressure between the static
pressures is related to the air volume via the energy conservation rate as per the graph below.
Simply read across from the pressure measurement to the appropriate fan curve and down to
calculate the resultant air volume.

For example: Measured differential pressure: 550Pa

Unit: EVX616
Reading from graph: 1.0

Air Volume: 1.0m³/s

700

750

800

850

900

950

1000

1050

1100

1150

1200

0

50

100

150

200

250

300

350

400

450

500

550

600

650

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1 1.2 1.3 1.4 1.5 1.6 1 .7 1 .8 1 .9 2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3

E

V

X1

E

VX2

EVX3

E

VX6

E

V

X4

E

V

X

7

E

VX5

E

V

X

8

This measurement can also be expressed in the following calculation:

where q is the air volume in m³/s

k is the fan nozzle coefficient
(EVX143=68, EVX244=86, EVX345=96, EVX447=172, EVX549=274,
EVX616 = 154, EVX717 = 197, EVX819 = 308)

p is the measure

d differential pressure in Pa

Example: Measured differential pressure: 550 Pa

Unit: EVX616

q = (154 550) / 3600
q = (154 x 23.452) / 3600
q = 3611 / 3600
q = air volume = 1.003 m³/s

q = (k p ) / 3600

V W

Δ

V

W

Δ

√

V

V

V

V

q Air Volume m³/s

v

Δp Differential Pressu

re Pa

w

Standard Wiring

& Fan Installation

5

Differential pressure curves

Fig.

13

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Heat Recovery Unit

Installation, Operation and Maintenance Manual

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Important

Warning

Caution

Maintainance 6

Before attempting to carry out any work on our units, all accompanying documentation including warning
labels on the unit must be referenced.
Should it be necessary to remove any component ensure that these are secured into position once
reinstalled. It is critical that after any maintenance work has been conducted that all components
removed/replaced be refitted correctly by a competent engineer.

Before attempting to carry out any maintenance work, investigative or repair work on our units, the unit
MUST BE COMPLETELY ISOLATED from its electrical supply. Ensure a minimum of two minutes after
electrical disconnection before removing access panels. This will allow any moving parts to come to a rest.
Care should also be taken when accessing external units as the wind and elements may cause moving
parts to ‘windmill’.

In general, this series of units require little maintenance. In the unlikely event of component failure, spares
are available from stock at VES Andover Ltd.

When accessing the unit ensure the access panels are handled/opened in a controlled manner so as to
avoid damage to the unit or injury to personnel. This is particularly important with bottom access units.
Ensure the AHU has been allowed to completely cool before attempting any work to the unit

For bottom access units, should it be necessary to remove the heat exchanger from the unit casework take
care to ensure that all components are correctly supported during their removal.
Remove the lids and central mullion from the unit, exposing the bypass damper. As an additional safety
measure some components are held into place using PK screws as shown.
Remove the required components with care and ensure all components are replaced correctly.

All Ecovent® EVX units feature plug & socket connections to allow easy removal/replacement of
key components. Separate the plug connection by hand (tools not required) by lifting the

locking lever

and pulling the plug/socket apart . DO NOT pull the cable to separate the

as semb ly.

On reconnection, the assembly features a locating lug to ensure correct orientation. Once rejoined ,lock
the connection together again using the locking lever as shown.

Ecovent® EVX units 1 to 5 feature a bulkhead-mounted fan plate assembly.

Ensure that special care is taken when removing/replacing components/assemblies from bottom-access
units. For larger components this may require the use of two or more persons.
The mounting plate is slotted to aid plate alignment. It is important to keep the fan assembly supported at
all times; the fan assembly should not be considered supported until all fixings are securely tightened.

To remove the fan assembly Fig.

, ensure the unit is fully isolated. Separate the supply plugs to the fan

as shown above

. Detach the measuring tube from the inlet ring and stow the tube clear .

Back-out the bottom screws but do not remove . Remove the top fixings completely and retain .

Carefully lift the fan assembly over the retained fixings and remove the fan assembly from the unit.

Important

Plug & socket operation

Fig.

14

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

®

Maintainance 6 Continued

To replace the fan assembly, ensuring the pitot
tapping on the fan inlet ring is accessible, locate
the mounting plate over the fixings retained in the

unit bulkhead.

Secure the loose fixings
through the mounting plate and tighten all the
mounting fixings.

Attach the measuring tube to
the pitot tapping on the inlet ring ensuring that it
is clear of all moving parts. Reconnect the supply
plugs as in Fig. ; if more than one plug is used,
ensure the correct plugs are reconnected as marked.
Ensure that the fans are free running by following the fan alignment instructions on page 11, adjust as
required.

In order to keep the unit in good order the following maintenance routine is recommended:

Filters should be inspected every three months. If they are found to be heavily soiled or damaged
in any way they should be replaced. Spare filters can be ordered from VES Spares Department.

The fan impeller should be cleaned every 6 months. Failure to clean the fan on a regular basis
could result in loss of fan performance, or cause it to fall out of balance. If a fan is stationary for
long periods in a humid atmosphere, it should be switched ON for minimum of two hours every
month to remove any moisture that may have condensed within the motor.
The fan motors are maintenance free due to the use of ball bearings with “life-long lubrication”.
At the end of the grease life it will be necessary to change the bearings or change the fan unit. The
life expectancy of bearings for standard usage is approximately 30 - 40000 hours.
If included, backdraught shutters should be free moving and unobstructed. Check the foam seals
and replace as necessary. Backdraught assemblies are available as a spare part if required.
Failure to keep dampers clean could result in the damper becoming inoperative. Clean damper
blades and frames and lubricate with PTFE aerosol or equivalent.
The heat exchanger matrix should be inspected for debris, dust or dirt build up. If found
contaminated, foreign matter should be removed accordingly; superficial dust or debris can be
removed from the surface of the heat exchange by gently brushing. Loosened debris can then be
vacuumed from the surface of the matrix or flushed through with warm water. Stubborn deposits can
be removed by using a low pressure washer with an approved detergent solution. The solution
temperature should not exceed 50°C. When using any pressure device care must be taken not to
damage the heat exchanger matrix.

Under NO circum stances should the heat excha nger be steam cleaned.

Ensure the drain pan and the drain connection is free from debris ensuring any condensate
produced can freely drain away. Should a full service be required it may be necessary to
disassemble the unit casework to gain access to some components.

Ecovent® EVX units are supplied with both unpainted galvanised sheet steel cases and powder
coat paint finish. Check all painted items to ensure that they have not deteriorated, particularly
where adverse environmental conditions prevail. Re-paint as necessary. Matching paint can be
sup plied upon request.

When enquiring after or ordering spares contact VES Spares Department, quoting the sales order
(SO) number and unit type as found on the unit nameplate.

Tel: [phone] • Fax: [phone]

At the end of their useful life the packaging and product should be disposed of via a suitable recycling
centre. Do not dispose of with normal household waste. Do not burn.

PLEASE ENSURE THAT THIS DOCUMENT IS PASSED ON TO THE END USER

We reserve the right to alter the specifcation without notice ©VES Andover Ltd. 2012.
No part of this publication may be photocopied or otherwise reproduced without the prior permission in
writing of VES Andover Ltd.

Three Monthly Checks

Six Monthly Checks

Twelve Monthly Checks

Spares & Repairs

WEEE Directive

Caution

Recommended Checks

Fan assembly removal/

installation

Fig.



15

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

®

Declaration of Conformity

Date: 1st November 2011

Product: Ecovent EVX Heat Recovery Unit

Type: EVX

Manufacturer: VES Andover Limited

The product above is produced in accordance with EC Council Directives:

2004/108/EC (Electromagnetic Compatibility Directive)

2006/95/EC (Low Voltage Directive)

2006/42/EC (Machine Directive)

The European Harmonised Standards applied are:

BS EN ISO 12100, BS EN ISO 13857:2008, EN61000, EN 60204-1, BS EN 60950-1:2002

Basis of Self attestation:

Quality Assurance to ISO 9001-2008, BSI Reg. Firm Cert. No. Q5375

Signature of Manufacturer:

Position of Signatory: Director

16

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

®

All VES Andover Products come with a one year guarantee from date of dispatch, which covers parts
and labour.
You can now extend this with the following options:

Option 1. FREE extended Warranty

We can offer you a maintenance agreement that keeps this equipment in tip-top condition.
If you take out this agreement, we will extend the warranty free of charge for up to 5 years,
providing the regular maintenance agreement remains in place.

Option 2. 12-24 Month Extended Warranty

12-24 months from the date of dispatch. This can be covered at a cost of just 3% of order value.
(minimum charge £50.00).

Option 3. 12-36 Month Extended Warranty

12-36 months from date of dispatch. For this cover, the charge is 6% of order value
(Minimum charge £80)

Please State which option you require when you place your order. A transferable certificate will then
be issued to you.

Please note, this offer excludes condensing units. We would be happy to quote you for these
separately.

Register for separate spares reminders and get a 10% discount

Register for this free service and we will automatically send you a regular reminder
detailing the consumable spares for this unit, together with their current list prices.

You will then be entitled to a 10% discount off any spares.

To arrange any of these options

Phone: [phone]
or Email: [e-mail]

Stating the sales order and reference number from the unit.

Warranty