VES ecovent EVH User manual

1
ORIGINAL INSTRUCTIONS
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
EVH Hybrid Ventilation Unit
Installation, Operation and Maintenance Manual
VES Ref. ID.1425
Issue E
May 2019
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 visiting
the Information Centre.
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 and Handling ....................................................................................................... 3
Installation ......................................................................................................................................... 3
Standard Wiring and Fan Installation ............................................................................................ 7
Maintenance ....................................................................................................................................... 11
Ecovent®EVH is a range of hybrid ventilation units with optimised duties of 0.060, 0.128 and
0.256 m³/s. All units are available as a master/slave pair. Each unit is suitable for ceiling void,
plantroom or internal locations only.
As standard, each unit will have been supplied either pre-wired to a fitted control panel or pre-
wired fitted isolator, 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 023 8046 1150,
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 INSTRUCTIONS
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
EVH Hybrid Ventilation Unit
Installation, Operation and Maintenance Manual
Nomenclature
Part Number Coding
Point Description Point Variants Details (as appropriate)
1Product EV Ecovent® Heat Recovery Units
2Heat Recovery type HHybrid Ventilation Units
3Unit Size 0, 1, 2 Sequential see unit outline for details
4Fan Type 7Centrifugal EC fan
5Fan Size 3, 4 Sequential
6Phase -1 230V 50Hz Single Phase
7Main Heating Null No Heating
/W LPHW Coil
/E Electric Heater Battery
8Casework Lining Null Standard
/A1 Variant (sequential)
9Handing * /LB Left/Bottom Access
/RB Right/Bottom Access
10 Main Filter Null No filter
11 Control Panel Section Null No Controls
/CPSC/MS Fitted control panel (master)
/CPSC/SV Fitted isolator panel (slave)
12 Connection /GL Supply/Extract Grilles
/SP Ø250mm Room Spigots
13 Colour Null Galvanised finish
/R9010 RAL Colour as specified
14 Finish MT Matt
SG Semigloss
FG Full Gloss
LT Leatherette
15 Powder Coat Type Null As colour
16 Variation /0001 Sequential
EVH173-1/RB/CP/GL/R9010SG/0253
EV H1 7 3 -1 /RB /CP /GL /R9010 SG /0253
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Typical Example
2
* Denotes position of supply air duct looking in the direction of the supply airflow

3
ORIGINAL INSTRUCTIONS
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
EVH Hybrid Ventilation Unit
Installation, Operation and Maintenance Manual
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 is unable to accept any claim for
damaged or missing goods.
The entire system must be considered for safety purposes. 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 such that component failure 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. 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 safe maintenance, consideration must also be given by the installer for adequate
illumination of the unit location. Further consideration should be given to the unit’s position
and secured into place as appropriate.
Mounting hangers, door furniture, isolators etc. extend beyond the casework, so are vulnerable
to accidental damage. Take necessary precautions so as not to cause damage whilste 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. 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
Units are to be rigged and lifted using spreaders, taking
into account the weight of the unit. Lifting gear should
be arranged so as not to bear on the casework, see right.
Caution
Receipt of Goods
and Handling
Installation
3
Lifting Detail
Fig.
2
4
Caution
Fork Lifting Detail
Fig.
1

4
ORIGINAL INSTRUCTIONS
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
EVH Hybrid Ventilation Unit
Installation, Operation and Maintenance Manual
Continued
Ecovent®EVH units are supplied with hangers suitable for drop-rod or ceiling-void mounting,
in 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 .
When hanging units from drop-rods, ensure that the load is evenly spread and that ALL
brackets are used within the support. Ensure that the drop rod/fixing used is selected
appropriately to accommodate the load of the unit.
Unit mounting detail
Fig.
3
Installation 4
Important
Ecovent®EVH units are intended to be connected to a wall or window-mounted louvre. This can be
a direct connection (from unit to louvre) or via a specific transition duct.
To ensure the opposing supply and exhaust airflows are separate, a site-specific splitter MUST be
incorporated into the installation (supplied by others). This can be incorporated into the wall
cavity, transition duct or external louvre, depending upon the exact site requirements. A 30mm
wide splitter channel positioned centrally on the unit has been incorporated into the unit to assist
with alignment. This is removable on size 2 units.
For units mounted flush against wall openings, a finishing flange is available to assist with this.
Ensure that the joint between unit and wall is sealed correctly. The flange is handed; ensure the
widest part is toward the bottom of the unit see fig.
Finishing Flange &
Splitter arrangement
detail
Fig.
4
3
Bracket Fixings
Finishing
Flange
Moun!ng Bracket
Mounting Bracket
Bracket Fixings
Finishing Flange
(Loose)
Splitter Channel
4

5
ORIGINAL INSTRUCTIONS
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
EVH Hybrid Ventilation Unit
Installation, Operation and Maintenance Manual
Continued
Duct transitions and plenum boxes allow for resizing and/or realignment as required and
should be sized to match both unit and louvre connections. A pair of joining brackets per
section (one each side) are provided to assist with the duct connection.
The example shown in fig. below depicts a two-part transition/plenum, each section having
its own set of joining brackets.
Fix the bracket parts to both sides of unit and transition as shown using the M6 fixings
provided. Tape the joint using self-adhesive rubber tape prior to assembly to prevent air
leakage.
To finish the assembly, bring the sections together and install the M8 joint fixings through both
parts of each joining bracket and tighten using a 6mm hex key, drawing the sections together
evenly, ensuring no visible gaps.
The nut is loose but held within the bracket body. Take care not to dislodge when fixing.
Installation 4
Caution Flange connections and channels are NOT structural and are included as part of the unit
sealing only. When moving assembled units ensure that ALL sections are fully supported.
Typical transition
assembly detail
Fig.
6
6
Important
Splitter
Splitter
Channel
Typical installation
detail (plan view)
Fig.
5
Window/
Louvre

6
ORIGINAL INSTRUCTIONS
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
EVH Hybrid Ventilation Unit
Installation, Operation and Maintenance Manual
Typical LPHW Coil
Fig.
7
Continued
Installation 4
Coils should be piped according to any relevant local codes of practice. As standard EVH coils are
supplied with a Ø15mm plain stub suitable for push-fit connections. All external piping is to be
supported independently from the coil. The flow connection is nearest the bottom of the unit (see
below)
It is important that 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.
EVH LPHW units are fitted with a coil temperature sensor as standard, ensuring that boilers run
continuously in low ambient temperatures can help to prevent this.
On Ecovent® EVH/ -W units, a Low Pressure Hot Water (LPHW) coil will be installed. The coils are
normally suitable for low pressure hot water with a range of between 80 ~ 60 °C flow and between
70 ~ 40 °C return temperature. The coil should be regularly vented so as to avoid potential air
locks, resulting in a fall off of duty.
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.
Flow
Return

7
ORIGINAL INSTRUCTIONS
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
EVH Hybrid Ventilation Unit
Installation, Operation and Maintenance Manual
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.
A cable entry point is provided at the control section.
It is the responsibility of the installer to ensure that a suitable cable gland (giving adequate
protection and strain relief) is fitted, and in doing so also ensure that no internal components
are damaged during this installation. Make certain all swarf is removed before use.
It is the customer’s responsibility to supply earth fault protection through the building
installation device and a dedicated, isolated power supply with overload protection, to account
for motor start up currents.
Do not connect any unit to an electrical supply voltage outside of the specification.
The following wiring diagrams are a guide to installing the standard fan and actuator options
found on Ecovent®EVH 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 on 08448 15 60 60, quoting the sales order (SO) number and unit type as
found on the unit name plate.
For incorrect fan rotation, check with the VES Customer Services for advice, on 023 8046 1150.
Standard Wiring
and Fan Installation
5
Warning
Important
Warning
Standard Fan Details
Fig.
8

8
ORIGINAL INSTRUCTIONS
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
EVH Hybrid Ventilation Unit
Installation, Operation and Maintenance Manual
Standard Wiring
& Fan Installation
5Continued
Standard Controls
(Master)
arrangement
Fig.
9
8

9
ORIGINAL INSTRUCTIONS
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
EVH Hybrid Ventilation Unit
Installation, Operation and Maintenance Manual
Standard Wiring
& Fan Installation
5Continued
Standard Isolator
(Slave)
arrangement
Fig.
10
8

10
ORIGINAL INSTRUCTIONS
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
EVH Hybrid Ventilation Unit
Installation, Operation and Maintenance Manual
Standard Wiring
& Fan Installation
5
Standard Controls
arrangement
Override Panels
Fig.
11
Continued
For each room an information and override panel is provided to allow the user to
override the automatic controls.
The panel comprises:
•Boost/Pause switch (retractive)
•Boost/System Healthy active indication (orange)
•Open windows indication (green)
•+/- 2 °C Temperature trim switch (retractive) [EPEL2008 only]
Operation of the Boost switch will run the unit to maximum set speed and modulate the
dampers to allow maximum amount of fresh air possible without affecting room
temperature. If the unit is off, operation of the Boost switch will start the system in
boost mode. The system will revert to automatic operation after a preset period or if the
switch is operated again. A time delay will prevent rapid mode switching by
unauthorised operatives. The Boost/System Healthy indication will illuminate with an
asymmetric pulse.
Operation of the Pause switch will pause the system. The system will revert to automatic
operation after a preset period or if the switch is operated again. A time delay will
prevent rapid mode switching by unauthorised operatives. The Boost/System Healthy
indication will stop illuminating until the unit resumes normal operation.
The Open windows indication shall illuminate when the external temperature reaches a
suitable level to encourage manual window opening. The preset temperature for
indication shall be set through the BMS at 15° C such that should the windows be
opened, there will never be a temperature differential of more than 5° C between room
design temperature and incoming fresh air.
An optional secondary condition can be activated to enable the window open indication
if the CO2level in the classroom reaches 1500 ppm. In this case, the window open
indication will be illuminated.
EPEL2008 has the same functionality and characteristics as the above with the addition
of the +/-2°C Temperature trim switch, which provides user override of room design
temperature by +2°C or -2°C. This is limited to 2°C either side of the setpoint, the system
will revert to automatic operation after a preset period.
For details regarding older switchplate designs or special versions please contact VES
Customer Services on 08448 15 60 60 for further information
The system healthy indicator will illuminate when the unit is operational. In the event of
a system failure, the indicator will be off and the buttons will be unresponsive e.g
pressing the boost button results in no boost indication. Should this situation arise the
system should be checked for a possible fault.
EPEL2008
Override Panel c/w temperature trim
EPEL2009
Override Panel (no trim)
Important

11
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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
EVH Hybrid Ventilation Unit
Installation, Operation and Maintenance Manual
Maintenance 6
Before attempting to carry out any work on VES units, all accompanying documentation
including warning labels on the unit must be referenced.
Should it be necessary to remove any component, ensure they 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 complete standstill.
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 come to a complete stop before attempting any work
on the unit
Ecovent®EVH units feature plug & socket connections to allow easy removal/replacement of
key components. Depending on the plug type, separate the plug connection by hand (tools not
required) by either lifting the locking lever or pressing the top/bottom clasp mechanism to
open .
Plug & socket operation
Fig.
12
13
Important
Warning
Caution
12
Important
13
12
13
On reconnection, the assembly features a locating lug to ensure correct orientation. Once
rejoined, lock the connection together again using the corresponding system as shown.
Note the plugs are handed and forcing an incorrect connection may result in damage to the plug.
Caution To separate the assembly, hold the plugs to pull them apart. DO NOTpull the cables.
Plug & socket operation
Fig.
14

12
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EVH Hybrid Ventilation Unit
Installation, Operation and Maintenance Manual
Maintenance 6
Important
Continued
Ecovent®EVH units feature bulkhead-mounted fan plate assemblies.
Ensure that special care is taken when removing/replacing components/assemblies from
bottom-access units. Larger access panels may require the use of two or more persons.
THE CONTROL ACCESS COVER MUST BE REMOVED BEFORE THE UNIT ACCESS COVER to gain safe
access to the unit. Ensure all panels are safely replaced after access.
Supply Fan assembly
removal/installation
Fig.
16
Ecovent®EVH units feature double inlet centrifugal fans mounted on an adapter plate.
The supply fans are clearly visible beneath the main access panel.
To remove/replace, unplug as per Fig. , undo the fixing screws and carefully remove the
fan/adapter plate assembly, retaining all fixings.
To replace the fan assembly, secure one fixing leaving enough of a gap to allow the adapter
plate to slide into place. Fit the remaining fixing and tighten both. Ensure the impeller is free
running. Reconnect the supply plugs as in Fig. ; if more than one plug is used, ensure the
correct plugs are reconnected as marked.
The fan mounting plates are 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.
Important
13
EVH1
Key components
Fig.
15
12
13
12

13
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EVH Hybrid Ventilation Unit
Installation, Operation and Maintenance Manual
Six Monthly Checks
Spares & Repairs
Recommended Checks
Continued
In order to keep the unit in good order the following maintenance routine is recommended:
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 may be necessary to change the fan unit.
Failure to keep dampers clean could result in the damper becoming inoperative. Clean damper
blades and frames and lubricate with PTFE aerosol or equivalent.
For units with integrated heating, the heating coil 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 coil.
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. 2019.
No part of this publication may be photocopied or otherwise reproduced without the prior permission in writing
from VES Andover Ltd.
Maintenance 6
WEEE Directive