VES ecovent Unit installation

VES Andover Ltd Eagle Close Chandlers Ford Ind. Est Eastleigh Hampshire SO53 4NF
Tel: 08448 156060 Fax: 02380 261204 E-mail: vesltd@ves.co.uk Web: www.ves.co.uk
®
Heat Recovery Unit
ORIGINAL INSTRUCTIONS
VES Ref. ID.986
Issue F
August 2014
Installation, Operation and Maintenance Manual
Important
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
Warning
Indicates hazards associated with electric current and high voltages
Caution
Indicates hazards that require safety advice for personnel or potential unit/property damage
Important
Indicates important information
page
Contents
Introduction
1
2
3
4
5
6
7
8
Introduction
1
The Ecovent® EVX series is a range of Heat Recovery units, with duties up to 2.5 m³/s. Suitable for
1
Nomenclature
2
Receipt of Goods & Handling
3
Installation
3
Standard Wiring & Fan Installation
6
Maintenance
13
Declaration of Conformity
15
Extended Warranty
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.
1
VES Andover Ltd Eagle Close Chandlers Ford Ind. Est Eastleigh Hampshire SO53 4NF
Tel: 08448 156060 Fax: 02380 261204 E-mail: vesltd@ves.co.uk Web: www.ves.co.uk
®
ORIGINAL INSTRUCTIONS
Heat Recovery Unit
Installation, Operation and Maintenance Manual
Nomenclature 2
Part Number Coding
1
2
3
4
Point Description
Product
Heat Recovery type
Unit Size
Fan Type
5 Fan Size
6 Phase
7 Unit Configuration
8 Main Heating
9 Infill
10 Handing
(denotes position of
supply airflow LIDSAF)
11 Main Filter
12 Twin Extract Fan Option
13 Control Panel Section
14 Colour
(powdercoat standard for
weatherproof units)
15 Powder Coat Type
16 Special
Typical Example
Point Variants
EV
X
1...8
1
4
3...9
-1
-3
/FP
/FW
/SP
/SW
Null
-E
-W
/DS
/EE
/LT
/RT
/LB
/RB
/L
/R
Null
/G4
/F7
Null
/TF
Null
/I
/CPSC
/ISCP
Null
/R7004
Details (as appropriate)
Ecovent® Heat Recovery Units
Crossflow plate heat exchanger
Sequential see unit outline for details
Backward curve plug fan (AC)
Backward curve centrifugal EC fan
Sequential
230V 50Hz Single Phase
400V 50Hz Three Phase
Flat Plantroom
Flat Weatherproof
Stacked Plantroom
Stacked Weatherproof
No Heating
Electric Heater Battery
LPHW Coil
25mm double skinned, acoustic infill
50mm double skinned (EN1886 standard)
Left/Top Access
Right/Top Access
Left/Bottom Access
Right/Bottom Access
Left
Right
No filter
EU4 Pleated Filter
High efficiency pleated filter
N/A
Twin Extract Fans
No fitted controls
Pre-wired isolator
Fitted control panel
Fitted isolator/speed controller
Galvanised finish
Powdercoated finish, RAL7004 etc...
Null
/IT
/BT
/S
As colour
Internal powdercoated only
Internal/External powdercoated
Special (non-standard) Unit
EVX143-1/FP-W/DS/RT/G4/CPSC/R5015/S
EV
1
X 1 4 3
2 3 4 5
-1 /FP -W /DS RT/ G4
/CPSC /R5015
/S
6
7 8 9 10 11 12 13
14
15 16
2
VES Andover Ltd Eagle Close Chandlers Ford Ind. Est Eastleigh Hampshire SO53 4NF
Tel: 08448 156060 Fax: 02380 261204 E-mail: vesltd@ves.co.uk Web: www.ves.co.uk
®
ORIGINAL INSTRUCTIONS
Heat Recovery Unit
Installation, Operation and Maintenance Manual
Receipt of Goods 3
& Handling
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.
Installation 4
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.
Caution
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.
Lifting Detail
Fig.
Important
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.
Caution
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.
Important
For associated components (speed controllers, controls) please refer to the relevant accompanying O&M
3
VES Andover Ltd Eagle Close Chandlers Ford Ind. Est Eastleigh Hampshire SO53 4NF
Tel: 08448 156060 Fax: 02380 261204 E-mail: vesltd@ves.co.uk Web: www.ves.co.uk
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ORIGINAL INSTRUCTIONS
Heat Recovery Unit
Installation, Operation and Maintenance Manual
Installation 4 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
instability.
Unit mounting detail
Fig.
Important
Electric Heater
Batteries
Caution
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.
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.
4
VES Andover Ltd Eagle Close Chandlers Ford Ind. Est Eastleigh Hampshire SO53 4NF
Tel: 08448 156060 Fax: 02380 261204 E-mail: vesltd@ves.co.uk Web: www.ves.co.uk
®
ORIGINAL INSTRUCTIONS
Heat Recovery Unit
Installation, Operation and Maintenance Manual
Installation 4 Continued
Condensate Trapping
Coils
A drain pan is fitted to all units. Should conditions mean that condensation 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 correctly.
For EVX units 1 - 5 an optional peristaltic pump is available. For pump fitting and installation
instructions see the documentation accompanying the pump assembly.
The drain pan is fitted with an internal spigot suitable for connection 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 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.
Caution
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.
Caution
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.
LPHW Coils
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
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.
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.
Typical LPHW Coil
Fig.
Return
Airflow
Flow
5
VES Andover Ltd Eagle Close Chandlers Ford Ind. Est Eastleigh Hampshire SO53 4NF
Tel: 08448 156060 Fax: 02380 261204 E-mail: vesltd@ves.co.uk Web: www.ves.co.uk
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ORIGINAL INSTRUCTIONS
Heat Recovery Unit
Installation, Operation and Maintenance Manual
Installation 4 Continued
DX Cooling Coils
Typical DX Cooling Coil
All cooling coils have fully boxed and insulated cases, with moisture eliminators fitted as
standard. The drain pan will require trapping to the drain line, for further information please
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 condensing units, refer to the appropriate supporting documentation.
Eliminators
Fig.
Airflow
Liquid
Suction
Drain
Twin Extract
Fan Option
For specific applications that require constant ventilation a twin extract option 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.
Important
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).
Typical Twin Extract
Fan Arrangement
Fig.
6
VES Andover Ltd Eagle Close Chandlers Ford Ind. Est Eastleigh Hampshire SO53 4NF
Tel: 08448 156060 Fax: 02380 261204 E-mail: vesltd@ves.co.uk Web: www.ves.co.uk
®
ORIGINAL INSTRUCTIONS
Heat Recovery Unit
Installation, Operation and Maintenance Manual
Standard Wiring 5
& Fan Installation
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
Important
shown below in figure
.
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. See below for specific fan details Fig.
.
Warning
Do not connect any unit to an electrical supply voltage outside of the specification.
Fig.
Recommended
cable entry points
Recommended
cable entry points
The following wiring diagrams are a guide to installing the standard 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.
Model
Standard Fan Details
Fig.
&
EVX Unit
Fan
1
2
3
4
ZD0301
ZD0411
ZD0501
ZD0701
230V 1PH 50Hz
Motor Power
F.L.C.
(kW)
(A)
0.23
1.65
0.32
1.70
0.40
2.10
0.75
3.90
7
Model
EVX Unit
Fan
5
6
7
8
ZD0903
ZA06H3
ZA07J3
ZA09J3
400V 3PH 50Hz
Motor Power
F.L.C.
(kW)
(A)
1.25
2.10
2.20
4.85
3.00
6.30
3.00
6.40
S.C.
(A)
n/a
5.60
35.28
35.28
VES Andover Ltd Eagle Close Chandlers Ford Ind. Est Eastleigh Hampshire SO53 4NF
Tel: 08448 156060 Fax: 02380 261204 E-mail: vesltd@ves.co.uk Web: www.ves.co.uk
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ORIGINAL INSTRUCTIONS
Heat Recovery Unit
Installation, Operation and Maintenance Manual
10 V DC Out
RD
YE
BN
BU
GNYE
J3
J2
J1
GND
L1
BU
N
WH
PE
E1 Analog In
Standard wiring arrangement
Fan Terminals for Ecovent®
EVX143
Fig.
A1 Tacho Out OC
Standard Wiring 5 Continued
& Fan Installation
+
Input
0...10 V
PE
N
L1
10 kΩ
1 ~ 200...277 V
50 Hz
+
Input
0...10 V
PE N L1 11 14
Line
1 ~ 200...277 V
50 Hz
10 kΩ
External speed setting
8
B
GND
A
ID
B
GND
ID
Signal connection
A
A1 Tacho Out OC
WH
E1 Analog In 1
YE
GND
A2 Status Out OC
GY
RD
WH
WH
BU
BN
GNYE
PE N L1 11 14
D1 Digital In 1
K1
GN
(I max = 10 mA)
10 V DC Out
Contact rating
max. AC 250 V 2 A
BU
Standard wiring arrangement
Fan Terminals for Ecovent®
EVX244 & EVX345
Fig.
External speed setting
VES Andover Ltd Eagle Close Chandlers Ford Ind. Est Eastleigh Hampshire SO53 4NF
Tel: 08448 156060 Fax: 02380 261204 E-mail: vesltd@ves.co.uk Web: www.ves.co.uk
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ORIGINAL INSTRUCTIONS
Heat Recovery Unit
Installation, Operation and Maintenance Manual
Analog In 1
Digital In 1
Standard wiring arrangement
Fan Terminals for Ecovent®
EVX447
Fig.
DC Out
(Imax = 70 mA)
DC Out
(Imax = 10 mA)
Standard Wiring 5 Continued
& Fan Installation
Contact rating
max. AC 250 V 2 A
24V 10V GND D1 E1
11 14
L1
N
L1
L2 L3
L1
N
K1
PE
PE
External
speed
setting
10 kΩ
1~ 200...277 V
50 Hz
+
E1
GND
10 V
Input
0...10 V
Analog In 1
Digital In 1
Contact rating
max. AC 250 V 2 A
24V 10VGND D1 E1
11 14
L1
N
L1
L2 L3
K1
PE
External
speed
setting
PE
L1 L2 L3
10 kΩ
3~ 380...480 V
50 Hz
+
E1
GND
Input
0...10 V
10 V
Fan Terminals for
Ecovent® EVX549
Fig.
DC Out
(Imax = 70 mA)
DC Out
(Imax = 10 mA)
10 kΩ
10 kΩ
9
VES Andover Ltd Eagle Close Chandlers Ford Ind. Est Eastleigh Hampshire SO53 4NF
Tel: 08448 156060 Fax: 02380 261204 E-mail: vesltd@ves.co.uk Web: www.ves.co.uk
®
ORIGINAL INSTRUCTIONS
Heat Recovery Unit
Installation, Operation and Maintenance Manual
Standard Wiring 5 Continued
& Fan Installation
W2
U2
V2
U1
V1
W1
Standard wiring arrangement
Fan Terminals for Ecovent®
EVX616, EVX717 & EVX819
Fig.
L1
L2
L3
PE
3~ 400 V 50 Hz
–
75
60 45 30
12
0
10
5
90
+
Y
DC 0…10 V
U
NOT USED
90 10
51
20
T
Fig.
AC 24 V 50 Hz / DC 24 V
~
Standard wiring arrangement
Damper Motor Terminals
0
1 2 3 5
BK RD WH OR
1
Warning
Standard wiring arrangement
Valve Actuator Terminals
(EVX1-5)
Terminal Box
1 2 3 4 5
24 V
GND
0‐10 V
SENSOR
SENSOR
Fig.
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
Valve
Warning
Frost
Sensor
SGS65... Valve Actuator
To isolate from the main power supply, the system must incorporate a device which disconnects
all the phase conductors
10
VES Andover Ltd Eagle Close Chandlers Ford Ind. Est Eastleigh Hampshire SO53 4NF
Tel: 08448 156060 Fax: 02380 261204 E-mail: vesltd@ves.co.uk Web: www.ves.co.uk
®
ORIGINAL INSTRUCTIONS
Heat Recovery Unit
Installation, Operation and Maintenance Manual
Standard Wiring 5 Continued
& Fan Installation
Fan alignment details
Fig.
Important
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
above. The same should be applied to any
or the inlet ring, adjust and retighten, see figure
wiring looms which may have become unfastened; ensure that loose wiring is securely stowed
away from any moving components.
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. The same should be applied to any wiring looms which 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.
Transit bolt removal
Fig.
Pressure tapping
Fig.
As all units in the Ecovent® EVX range feature tapped inlet rings it is possible to establish the
volume 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-phase inverters for fan speed control commissioning; see the accompanying inverter
documentation for further operational details.
The centrifugal fans have infinite speed adjustment, the benefits of real energy savings are
apparent when the fan speed is reduced; this is best demonstrated when used in conjunction
with additional sensors such as air quality or occupancy.
Using a micro manometer and adjusting the fan speed it is possible to commission each fan to
the required air volume. Each fan section has a differential pressure tapping connection point;
by connecting your micro manometer to the appropriate pitot a differential pressure reading
can be taken. If the unit features a fitted control panel this action can be undertaken within
the programming available; see the accompanying controls documentation for further operational details.
11
VES Andover Ltd Eagle Close Chandlers Ford Ind. Est Eastleigh Hampshire SO53 4NF
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ORIGINAL INSTRUCTIONS
Heat Recovery Unit
Installation, Operation and Maintenance Manual
Standard Wiring 5 Continued
This differential pressure compares the static pressure in front of the fan inlet ring with the static pressure
& Fan Installation
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.
EV
X8
EVX
5
EVX
7
1150
EVX6
EVX1
1200
EVX4
Measured differential pressure: 550Pa
Unit: EVX616
Reading from graph: 1.0
Air Volume: 1.0m³/s
EVX2
EVX3
For example:
1100
1050
1000
950
900
Δpw Differential Pressure Pa
850
800
750
700
650
600
550
500
450
400
350
300
250
200
150
100
Differential pressure curves
Fig.
50
0
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
qv Air Volume m³/s
This measurement can also be expressed in the following calculation:
qV = (k
where
Δ pW) / 3600
qV 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)
ΔpW is the measured differential pressure in Pa
Example: Measured differential pressure: 550 Pa
Unit: EVX616
qV = (154 √ 550) / 3600
qV = (154 x 23.452) / 3600
qV = 3611 / 3600
qV = air volume = 1.003 m³/s
12
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3
VES Andover Ltd Eagle Close Chandlers Ford Ind. Est Eastleigh Hampshire SO53 4NF
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®
ORIGINAL INSTRUCTIONS
Heat Recovery Unit
Installation, Operation and Maintenance Manual
Maintainance 6
Important
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.
Warning
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.
Caution
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
assembly.
and pulling the plug/socket apart
. DO NOT pull the cable to separate the
Plug & socket operation
Fig.
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.
Important
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.
as shown above
.
, ensure the unit is fully isolated. Separate the supply plugs to the fan
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.
13
VES Andover Ltd Eagle Close Chandlers Ford Ind. Est Eastleigh Hampshire SO53 4NF
Tel: 08448 156060 Fax: 02380 261204 E-mail: vesltd@ves.co.uk Web: www.ves.co.uk
®
ORIGINAL INSTRUCTIONS
Heat Recovery Unit
Installation, Operation and Maintenance Manual
Maintainance 6 Continued
Fan assembly removal/
installation
Fig.
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
Secure the loose fixings
unit bulkhead.
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.
Recommended Checks
In order to keep the unit in good order the following maintenance routine is recommended:
Three Monthly Checks
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.
Six Monthly Checks
Caution
Twelve Monthly Checks
Spares & Repairs
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 circumstances should the heat exchanger 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
supplied 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: 08448 15 60 60 • Fax: 02380 26 12 04
WEEE Directive

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.
14
VES Andover Ltd Eagle Close Chandlers Ford Ind. Est Eastleigh Hampshire SO53 4NF
Tel: 08448 156060 Fax: 02380 261204 E-mail: vesltd@ves.co.uk Web: www.ves.co.uk
®
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
15
ORIGINAL INSTRUCTIONS
VES Andover Ltd Eagle Close Chandlers Ford Ind. Est Eastleigh Hampshire SO53 4NF
Tel: 08448 156060 Fax: 02380 261204 E-mail: vesltd@ves.co.uk Web: www.ves.co.uk
®
ORIGINAL INSTRUCTIONS
Heat Recovery Unit
Installation, Operation and Maintenance Manual
Warranty
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:
or Email:
08448 15 60 60
spares@ves.co.uk
Stating the sales order and reference number from the unit.
16