VES ecovent EVC Installation, Operation And Maintenance Manual

1

ORIGINAL INSTRUCTIONSVES 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

Installation, Operation and Maintenance Manual

®

EVC Heat Recovery Unit

VES Ref. ID.1120

Issue D

June 2016

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 8
Maintenance 15

The Ecovent® EVC series is a range of Heat Recovery units, with duties up to 1.3 m³/s. Suitable for
either plantroom, ceiling void or internal 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

Important

Introduction

1
2
3
4
5
6

1

Contents

2

ORIGINAL INSTRUCTIONSVES 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

Installation, Operation and Maintenance Manual

®

EVC Heat Recovery Unit

Nomenclature

Part Number Coding

Point Description Point Variants Details (as appropriate)

1 Product EV Ecovent® Acoustic Heat Recovery Units

2 Heat Recovery type C Counterflow plate heat exchanger

3 Unit Size 0...5 Sequential see unit outline for details

4 Fan Type 4...7 Centrifugal EC fan

5 Fan Size 2...7 Sequential

6 Phase -1 230V 50Hz Single Phase

-3 400V 50Hz Three Phase

7 Unit Configuration /FP Flat Plantroom

/SP Stacked Plantroom

8 Main Heating Null No Heating

-E Electric Heater Battery

-W LPHW Coil

9 Infill /DS 25mm double skinned

/EE 50mm double skinned

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 (stacked)

/R Right (stacked)

11 Main Filter Null No filter

/G4 EU4 Pleated Filter

/F7 High efficiency pleated filter

12 Control Panel Section /CPSC Fitted control panel

/ISC Fitted isolator/speed controller

13 Colour Null Galvanised finish

/R7004 Powdercoated finish, RAL7004 etc...

14 Powder Coat Type Null As colour

/IT Internal powdercoated only

/BT Internal/External powdercoated

15 Special /S Special (non-standard) Unit

EVC152-1/FP-W/EE/RT/G4/CPSC/S

EV C 1 5 2 -1 /FP -W /EE /RT /G4 /CPSC /S

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

Typical Example

2

3

ORIGINAL INSTRUCTIONSVES 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

Installation, Operation and Maintenance Manual

®

EVC Heat Recovery Unit

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 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.
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.

Mounting hangers, door furniture, isolators etc. extend beyond the casework and so are
vunerable to accidental damage. Take necessary precautions so as not to cause damage whilst
handling the unit.

The weight of each unit/section is specified on the outline drawing and the total unit weight
will be displayed on the unit inspection label. When lifting the unit using a fork lift truck
ensure the whole unit is supported by the full length of the forks. It may be necessary to use
fork extensions to fully support the unit properly. The centre of gravity may be offset from the
centre of the unit; this needs to be taken into consideration when lifting the unit.

Handle with care. Failure to fully support the unit during lifting may result in damage to the
unit casework Handles, lids, housings and coil connections must NOT be used as lifting points.

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.

Caution

Receipt of Goods

& Handling

Installation

3

Lifting Detail

Fig.

2

4

Fork Lifting Detail

Fig.

1

Caution

4

ORIGINAL INSTRUCTIONSVES 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

Installation, Operation and Maintenance Manual

®

EVC Heat Recovery Unit

Continued

Ecovent® EVC units 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 .

When hanging units from drop-rods, ensure that the load is evenly spread and that ALL feet are
used within the support, including those for fitted silencers if included.
Ensure that the drop rod used is selected appropriatedly to accomodate the load of the unit.

Unit mounting detail

Fig.

345

Installation 4

Important

EVC units with fitted silencers are sectional and handed. It is important that all sections are

joined together securely prior to positioning and installation. Remove and retain the fixings
from the joining bracket. Butt the correct silencer to the unit section ensuring the unit spigots
enter the silencer section fully see fig.

6

. This joint 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. Finish the assembly by installing the joint fixings through both parts of each joining
bracket and tighten using a 6mm hex key, drawing the sections together evenly see fig.

7

.

Section joining detail

Fig.

6

7

Caution

Joining brackets are NOT structural and are included as part of the unit sealing only.
When moving assembled units ensure that ALL sections are fully supported.

7634534

5

5

ORIGINAL INSTRUCTIONSVES 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

Installation, Operation and Maintenance Manual

®

EVC Heat Recovery Unit

Continued

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

Some units feature dual hinge/handles meaning access doors can be opened either way or
removed completely.

Each handle assembly features a lockable handle, secured as standard by an M4 Hex key.
In order to open the hinges correctly the locks must be in the open position. This is clearly

marked on the handle (see Fig.

9

) ; failure to do this may result in permanent damage to the

lock/handle mechanism.

When closing/replacing doors, ensure that all handles are fully closed and all locks are
returned to the closed position.

Installation 4

Access

Caution

Locked

Unlocked

1

2

Dual Hinge handle

Fig.

8

Lock and release action

Fig.

9

10

Access opening/removal

options

Fig.

11

Caution

10

9

6

ORIGINAL INSTRUCTIONSVES 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

Installation, Operation and Maintenance Manual

®

EVC Heat Recovery Unit

Continued

On EVC/ -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.

Coils should be piped according to any relevant local codes of practice. Where threaded
connections are supplied, the only 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
external piping is to be supported independently from the coil. Fluid filters are recommended.

It is important that water and steam coils are protected against damage from extreme weather
conditions during the winter season. If the water is allowed to freeze in the coil system,
damage may occur potentially bursting pipes and resulting in emergency problems.
Fitting a frost thermostat at the unit inlet and ensuring that boilers run continuously in low
ambient temperatures can help to prevent this.

Heating coils do not cool immediately when the hot water supply is cut off. The residual heat
must be dissipated to avoid damage. The continuous running 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® EVC / -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 supplied as
standard 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 potential air locks, resulting in a fall off of duty.

Installation 4

Typical LPHW Coil

Fig.

12

Caution

Coils

Electric Heater

Batteries

Caution

LPHW Coils

Flow

Return

Caution

It is recommended that a check be made as to
whether any treatment is required to the water
supply for prevention of corrosion and scaling of
the equipment. 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 connections
either left or right-hand side looking in direction of
airflow. Please see order acknowledgement for
confirmation of this handing. Should you need to
alter this please consult VES as unit adjustment may
invalidate your warranty.

Airflow