Exhausto VEX300 Series Instruction Manual

Assembly and installation
VEX310T-320T-330T-340T-350T
for third-party control system
Product information........................................ Chapter 1 + 6
Mechanical assembly..................................... Chapter 2 + 3
Electrical installation.......................................Chapter 4
Maintenance...................................................Chapter 5
Original instructions
3005993-2021-03-09 VEX300T
EXHAUSTO A/S
Odensevej 76
DK-5550 Langeskov
Tel. [phone]
Fax [phone]
[email protected]
www.exhausto.com

1. Product information
1.1. Designations used in these instructions.............................................................7
1.1.1. Simplified diagram ...........................................................................................7
1.2. Use.......................................................................................................................... 8
1.3. Location requirements.......................................................................................... 9
1.3.1. Space requirements.........................................................................................9
1.3.2. Requirements for underlying surface............................................................. 11
1.3.3. Condensation outlet....................................................................................... 11
1.3.4. Requirements for duct system........................................................................11
1.4. Description........................................................................................................... 12
1.4.1. Design............................................................................................................12
1.4.2. Parts of the VEX unit......................................................................................13
1.5. Principal dimensions...........................................................................................14
1.5.1. Dimensional drawings....................................................................................14
1.5.2. Principal dimensions of VEX unit................................................................... 15
1.5.3. Dimensions of water connection/outlet.......................................................... 15
1.5.4. Dimensions of duct connection...................................................................... 15
1.5.5. Dimensional sketches, feet ........................................................................... 16
1.5.6. Dimensions of feet......................................................................................... 16
2. Handling
2.1. Unpacking.............................................................................................................17
2.2. Transport.............................................................................................................. 18
2.2.1. Passage through openings ........................................................................... 19
2.2.2. Removal of doors...........................................................................................19
2.2.3. Internal transport with reduced weight........................................................... 20
3. Mechanical installation
3.1. Installing the VEX unit......................................................................................... 21
3.1.1. Installation directly on floor.............................................................................21
3.1.2. Installation on mounting base........................................................................ 21
3.2. Condensation outlet............................................................................................ 21
3.2.1. Establishment of condensation outlet............................................................ 21
3.3. Control box...........................................................................................................23
3.3.1. Installation of control box .............................................................................. 23
3.4. Water connection (HW/CW).................................................................................24
3.4.1. Principles for connecting the cooling/heating coil.......................................... 24
3.4.2. Installation requirements................................................................................25
3.4.3. MVM valve..................................................................................................... 26
3.5. Connection to cooling/heating system (DX)..................................................... 27
3.5.1. Principles for connecting the DX coil..............................................................27
3.5.2. Soldering the pipes........................................................................................ 27
4. Electrical installation
4.1. Electrical installation........................................................................................... 28
5. Maintenance, hygiene and servicing
5.1. Opening the VEX unit.......................................................................................... 29
5.2. Maintenance......................................................................................................... 29
5.2.1. Maintenance Schedule...................................................................................29
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5.3. Hygiene.................................................................................................................30
5.4. Service.................................................................................................................. 30
5.4.1. Filter change.................................................................................................. 30
5.4.2. Removal of fan unit........................................................................................ 31
5.4.3. Removal of counterflow heat exchanger(s) ...................................................32
5.4.4. Removal of water coil (HW/CW).................................................................... 33
5.4.5. Determination of airflow................................................................................. 34
5.5. Cleaning................................................................................................................34
5.5.1. Cleaning the fan unit...................................................................................... 34
5.5.2. Cleaning the counterflow heat exchanger......................................................34
5.5.3. Cleaning the water coil (HW/CW/DX)............................................................ 36
5.5.4. Cleaning the condensation outlet...................................................................36
6. Technical data
6.1. Weight, corrosion class, temperature ranges, etc............................................37
6.1.1. Weight............................................................................................................ 37
6.1.2. Corrosion class cabinet..................................................................................37
6.1.3. Temperature ranges.......................................................................................37
6.1.4. Fire thermostat...............................................................................................37
6.1.5. Motor damper ................................................................................................38
6.2. Water coils (HW/CW)............................................................................................39
6.2.1. Data VEX310T-350T......................................................................................39
6.2.2. MVM motor valve........................................................................................... 40
6.3. Cooling/heating coils (DX).................................................................................. 41
6.4. Panel filters...........................................................................................................41
6.4.1. Filter data....................................................................................................... 41
6.5. Capacity diagram................................................................................................. 42
6.6. EC Declaration of Conformity.............................................................................42
6.7. Ordering spare parts........................................................................................... 42
6.8. Environmental declaration..................................................................................43
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Symbols, terms and warnings
Prohibition symbol Failure to observe instructions marked with a prohibition symbol
may result in serious or fatal injury.
Danger symbol Failure to observe instructions marked with a danger symbol
may result in personal injury and/or damage to the unit.
Scope This instruction manual is for use with EXHAUSTO VEX-type air handling units.
Please refer to the product instructions regarding accessories and extra equip-
ment.
The instructions must be fully observed to ensure personal safety and to protect
the equipment and ensure its correct operation. EXHAUSTO A/S accepts no liabil-
ity for accidents caused by equipment not used in accordance with the manual’s
instructions and recommendations.
Supply air/extract
air
This instruction manual uses the following terminology:
● Supply air
● Extract air
● Outdoor air
● Exhaust air
Accessories The confirmation of order states which accessories are delivered with the VEX
unit.
Definition In the type designation R stands for Right, indicating that the supply air is to the
right of the unit, as seen from the operating side. Supply air to the left is designa-
ted with L for Left
Opening the air
handling unit
Do not remove the detachable doors/panels until the supply volt-
age has been disconnected at the isolation switch and the fans
have stopped.
NB: The number of service access doors will vary according to the VEX size. See the
table below.
VEX size VEX size Number of doors on service
side
310T 1 (screwed in place) 1 (screwed in place)
320T 1 (screwed in place) 1 (screwed in place)
330T 2 (screwed in place and hinged) 2 (screwed in place)
340T 2 (screwed in place and hinged) 2 (screwed in place)
350T 2 (screwed in place and hinged) 2 (screwed in place)
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Prohibited uses The VEX unit is not to be used to transport solid particles or in
areas where there is a risk of explosive gases.
No duct connection If one or more of the spigots is not connected to a duct: Fit a
protective net to the spigots with a maximum mesh width of 20
mm (in accordance with EN294).
Information plate The information plate is positioned to the left of the control system box
The VEX unit information plate shows:
● the VEX variant designation
● unit production order no./year
NB: Always have the production order number ready when contacting EXHAUS-
TO A/S.
Filter label Filter labels are positioned on the front of the VEX unit door opposite each filter.
The VEX unit filter label shows:
● Rated airflow (indicated by installer)
● Number of filters
● Filter class
● Final pressure drop (indicated by in-
staller)
NB: Quote the product number on the filter when ordering new filters.
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1. Product information
1.1 Designations used in these instructions
1.1.1 Simplified diagram
The simplified diagram shows a VEX unit with RIGHT fan placement. See table with
designations on next page.
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Designations
Component Function Standard/
accessories
Coil: HW/CW/DX Water heating coil, cooling/heating coil, DX
cooling coil
Option
LS(F)/LS(F)R Closing damper, outdoor air Accessory
LS(A)/LS(A)R Closing damper, exhaust air Accessory
BP1 Bypass damper Standard
M1/MC1 Extract air motor Standard
M2/MC2 Supply air motor Standard
P1.2x and P1.2y Points for measuring pressure rise across ex-
tract air fan
Standard
P2.2x and P2.2y Points for measuring pressure rise across
supply air fan
Standard
P2.1x and P2.1y Points for measuring pressure drop across
outdoor air filter
Standard
P1.1x and P1.1y Points for measuring pressure drop across
extract air filter
Standard
1.2 Use
Comfort ventilation EXHAUSTO VEX is used for comfort ventilation tasks.
Operating temperature range for the unit – see section "Technical data".
Prohibited uses The VEX unit is not to be used to transport solid particles or in areas where there
is a risk of explosive gases.
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1.3 Location requirements
Location The VEX unit is designed for indoor fitting.
1.3.1 Space requirements
The cabinet has detachable or opening doors on each side. The drawing below indi-
cates how much space is needed for servicing the VEX unit, i.e. changing filters,
cleaning, servicing, etc.
NB: Space must be reserved for connecting and servicing any water supply to the top,
right (R) or left (L).
VEX310T/320T
C
A
B
RD14045-01
D
All dimensions in mm.
VEX size A
Depth
B
Removing the exchanger
C
Removing of filter
D
Filter
310T 595 300 (1 item) 1050 (A+D) 455
320T 865 300 (2 items) 1592 (A+D) 725
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VEX330T/340T/350T
C
A
RD14046-01
B
D
E
All dimensions in mm.
VEX size A
Depth
B
Removing the exchanger
C
Removing of filter
D
Filter
E
Opening of doors
F
Width
330T 935 325 (2 items) 1730 (A+D) 795 1675 1500
340T 935 310 (2 items) 1730 (A+D) 795 1880 1900
350T 990 710 (2 items) 1840 (A+D) 850 2180 2400
NB: For VEX units with hinged/openable doors, there must be space allocated on each
side of the VEX unit to ensure that the doors can be fully opened. See sketch.
F
60 60
RD14093-01
See section "Principal dimensions" for more VEX unit dimensions.
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1.3.2 Requirements for underlying surface
When fitting the unit directly to an existing surface - i.e. without using the mounting
base (accessory) - the surface must be:
● flat
● level (+/- 3 mm per metre)
● hard
● resistant to vibration
See section "Principal dimensions" for positions of VEX unit feet.
1.3.3 Condensation outlet
The condensation outlets from the condensation tray under the heat exchanger and
any cooling coil exit the VEX unit from the front. An outlet for condensation water
must be installed in the immediate vicinity of the VEX unit. See section "Mechanical
installation"
NB: To ensure space for the water trap, the VEX unit may be mounted an a base (ac-
cessory) or otherwise raised by min. 135 mm above floor height.
1.3.4 Requirements for duct system
Duct connection To achieve maximum performance and minimal energy consumption, the VEX unit
should be connected to the duct system with a straight duct at least 500 mm long,
before and after the unit.
Silencers The duct system must be fitted with silencers specified by the Project Manager, in
accordance with the requirements of the operating area.
Insulation The duct system must be insulated against:
● Condensation
● Sound emission
● Thermal loss
Condensation Condensation in the ducts may occur when the exhaust/outdoor air has high hu-
midity. EXHAUSTO recommends a condensation outlet is also fitted at the lowest
point in the ducts.
No duct connection If one or more of the spigots is not connected to a duct: Fit a
protective net to the spigots with a maximum mesh width of 20
mm.
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1.4 Description
1.4.1 Design
General drawing The drawing below illustrates the construction of the VEX unit, without doors:
LEFT RIGHT
9
6
4
17 16 15 14
1,22,1
13
12
11
1
2
RD14061-01
3
7 8
10
1,12,2
5
2
4
6
1
11
12
13
9
14 15 16 17
1,22,1
RD14060-01
3
78
10
2,21,1
5
Pos. Part Function
1 Panel filter for extract air Filters extract air
2 Heating/cooling coil for
supply air (option)
Heats or cools the supply air
3 Condensation tray (option) Collects the condensate and drains it away from the cooling coil to the
condensation outlet
4 Supply air fan Admits air into the room
5 Spigot for condensation
outlet under cooling coil
(option)
Conducts condensate away from the cooling coil condensation tray.
External condensation outlet connects here.
6 Counterflow heat ex-
changer
Conducts heat from extract air to supply air
7 Condensation tray Collects the condensate and drains it away from the counterflow heat
exchanger to the condensation outlet
8 Spigot for condensation
outlet under counterflow
heat exchanger
Collects condensate from counterflow heat exchanger condensation
tray. External condensation outlet connects here.
9 Extract air fan (exhaust
air)
Removes "stale" air
10 Bypass damper With closed damper: In operation with heat recovery, the air passes
through the counterflow heat exchanger.
With open damper: Bypass operation, directs air around the counter-
flow heat exchanger
11 Bypass motor Opens/closes bypass damper.
12 Panel filter for outdoor air Filters outdoor air
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Pos. Part Function
13 Pre-filter/coarse filter for
outdoor air
Filters outdoor air
14 Spigot 1.2 Exhaust air spigot
15 Spigot 2.1 Outdoor air spigot
16 Spigot 1.1 Extract air spigot
17 Spigot 2.2 Supply air spigot
1.4.2 Parts of the VEX unit
Cabinet The inside and outside of the cabinet are made of Aluzinc® The cabinet has been
insulated with 50 mm mineral wool.
Fans The VEX unit contains two centrifugal fans with backward curved blades for ex-
tract air and supply air.
Counterflow heat
exchanger
The VEX unit’s counterflow heat exchanger is made of aluminium and is highly ef-
ficient. The counterflow heat exchanger can be removed and cleaned. See section
"Servicing and cleaning".
Filters The unit includes integral panel filters for both extract air and supply air.
Bypass damper The VEX unit has an integral variably adjustable bypass, allowing for precise con-
trol of the supply air temperature.
*Integrated water
heating coil (HW)
The water heating coil is integrated in the VEX unit and is able to increase the
temperature of the supply air.
*Integrated cooling/
heating coil (CW)
The cooling/heating coil is integrated in the VEX unit and is able to cool or heat
the supply air.
*Integrated cooling/
heating coil (DX)
The DX coil is integrated in the VEX unit and is able to cool or heat the supply air.
*All VEX sizes can be supplied with one of the above coils as an option.
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1.5 Principal dimensions
1.5.1 Dimensional drawings
NB: Section A Pipe for water connection has been rotated 90°. This applies only to
VEX320T.
LEFT
P
P
P
P
O
N
O
N
M
L
M
L
1,2
2,2
1,1 2,1
RD14068-01
A
C
E
D
B
G F
H
H
I
J
K
A
A
I
J
K
VEX320T
RIGHT
P
P
P
P
O
N
O
N
M
L
M
L
1,2 2,2
1,1
2,1
RD14067-01
A
C
B
E G
H
F
H
D
I
J
K
A
A
VEX320T
J
K
I
The indicated dimensions A-P are shown on the dimensional drawing and can be
read off from the tables next to the given VEX size.
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1.5.2 Principal dimensions of VEX unit
VEX size A
Height
B
Depth
C
Width
D
Depth without
control box
E
Depth without
doors/panels
310T 1215 725 1200 595 490
320T 1215 996 1200 865 760
330T 1474 1064 1500 932 827
340T 1775 1064 1900 932 827
350T 1825 1121 2400 990 885
All dimensions in mm.
1.5.3 Dimensions of water connection/outlet
VEX size F G H I J K
310T 415 90 25 112 81 203
320T 415 90 25 82 122 244
330T 540 90 25 134 90 212
340T 685 90 25 132 105 236
350T 864 90 25 133 105 236
All dimensions in mm.
1.5.4 Dimensions of duct connection
VEX size L M N O P
310T 383 217 414 181 250
320T 614 258 385 222 315
330T 671 259 532 226 315
340T 627 303 685 269 400
350T 635 353 884 320 500
All dimensions in mm.
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1.5.5 Dimensional sketches, feet
RD14070-01
A
B
C C
O25,5
1.5.6 Dimensions of feet
VEX size A B C
310T 1172 340 -
320T 1172 610 -
330T 1472 677 -
340T - 677 936
350T - 735 1186
All dimensions in mm.
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2. Handling
2.1 Unpacking
Delivery The following components are supplied:
● VEX unit
● Supplied accessories (as indicated in the checklist on the front page of the in-
structions)
Packaging The unit is delivered on wooden blocks and packed in clear plastic.
NB Once the plastic has been removed, the unit must be protected against dirt
and dust:
●The covers on the spigots must not be removed until the spigots are
connected to the ventilation ducts.
●Whenever possible, keep the unit closed during fitting.
The unit should be
cleaned before it is
used.
Once the VEX unit is fitted, it must be checked and thoroughly cleaned. All dust,
debris and metal shavings must be vacuumed up.
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2.2 Transport
Transport methods Transport the VEX unit in one of the following ways:
Method Drawing
Manual transport:
Lifting brackets for manual transport
can be fitted as shown on the draw-
ing:
RD14053-01
Using pallet truck or fork-lift truck:
IMPORTANT: The forks on the lifting
equipment must be long enough to
prevent damage to the bottom of the
VEX unit.
NB: VEX350T requires lifting equip-
ment for lowering the VEX unit
through the side of the lorry.
RD14054-01
Crane:
Never lift the VEX unit
with the lifting brackets
by using a crane.
Use straps and lifting yokes to pre-
vent damage to the VEX unit.
RD14055-01
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2.2.1 Passage through openings
VEX unit dimen-
sions
The table below shows the unit's main dimensions, and is intended to indicate
how large an opening has to be for the unit to pass through:
VEX size A
Height
B
Depth
Depth without
control box
Depth without
doors/panels
C
Width
310T 1215 740 595 490 1200
320T 1215 1011 865 760 1200
330T 1474 1079 932 827 1500
340T 1775 1079 932 827 1900
350T 1750 1116 990 885 2400
All dimensions in mm.
The figures for Height, Depth and Width (A, B and C) can be seen on the dimen-
sional sketches in the section "Principal dimensions".
2.2.2 Removal of doors
The following tools are needed for removal:
● Screwdriver, electric screwdriver with following bits:
● Allen key 6mm
● Allen key 3mm
RD14052-01
Disconnect power at the isolation switch before opening VEX unit.
Step Action
1 Unscrew the bolts from the doors
2 Remove/open the doors
3VEX330T/340T/350T: Unscrew the hinges
Space requirements See also section "Location requirements" for information on how much space is
needed to open the doors.
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2.2.3 Internal transport with reduced weight
Weight reduction The air handling unit's weight can be reduced during transport by removing doors/
panels, fan units and counterflow heat exchanger(s).
Parts 310T 320T 330T 340T 350T
VEX total weight 157 204 265 345 530
Counterflow heat ex-
changer * items
1* 7.2 2* 7.2 2* 10.2 2* 19.8 2* 35
Fan unit * items 2* 4.1 2* 6.4 2* 9.2 2* 9.5 2* 20
Panels/doors 62 62 81 105 175
VEX for internal
transport (no doors,
heat exchanger
or fan units)
80 115 146 182 245
All weights in kg
Removal See section "Maintenance, hygiene and servicing" for instructions on removing fan
unit and counterflow heat exchanger and for extracting filter.
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