Exhausto VEX370H User manual

VEX370H
Mechanical Assembly - EXact2 control system
Product information............................................................... Chapter 1 + 6
Mechanical assembly............................................................ Chapter 2 + 3
Electrical installation.............................................................. Chapter 4
Maintenance.......................................................................... Chapter 5
Original brugsanvisning
3004793-2023-04-18
EXHAUSTO A/S
Odensevej 76
5550 Langeskov, Denmark
Tel.: [phone]
Fax: [phone]
[email protected]
www.exhausto.dk

1. Product information
1.1. Designations used in these instructions..............................................................................................5
Model overview............................................................................................................................... 5
1.1.1. Designations used in these instructions..........................................................................................6
1.2. Application.............................................................................................................................................. 7
1.3. Location requirements........................................................................................................................... 7
1.3.1. Space requirements........................................................................................................................8
1.3.2. Requirements for underlying surface.............................................................................................. 8
1.3.3. Outlet............................................................................................................................................. 8
1.3.4. Requirements for duct system........................................................................................................ 8
1.4. Description.............................................................................................................................................. 9
1.4.1. Design.............................................................................................................................................9
1.5. Main aim.................................................................................................................................................11
1.5.1. Dimensional drawing.....................................................................................................................11
2. Handling
2.1. Unpacking............................................................................................................................................. 14
2.1.1. Once the VEX has arrived ........................................................................................................... 14
2.1.2. Weight...........................................................................................................................................14
2.1.3. Weight...........................................................................................................................................14
2.2. Transport............................................................................................................................................... 15
2.2.1. Passage through openings ......................................................................................................... 15
2.2.2. Internal transport with reduced weight.......................................................................................... 16
2.2.3. Disassembly of integrated heating coil, HCW370I .......................................................................19
3. Mechanical assembly
3.1. Installing the unit.................................................................................................................................. 20
3.1.1. Assembly instructions................................................................................................................... 20
3.1.2. Step 1–4........................................................................................................................................22
3.2. Condensation drain.............................................................................................................................. 27
3.2.1. Establishment of condensation outlet........................................................................................... 27
3.3. Integrated water heating coil............................................................................................................... 28
3.3.1. Principles for connecting the water heating coil............................................................................28
3.3.2. Bleeding of coils............................................................................................................................29
3.3.3. MVM valve.................................................................................................................................... 30
4. Electrical installation
4.1. Electrical installation............................................................................................................................32
5. Maintenance
5.1. Operating readings via the HMI panel................................................................................................ 33
5.2. Maintenance Schedule......................................................................................................................... 33
5.3. Hygiene..................................................................................................................................................34
5.4. Service................................................................................................................................................... 34
5.4.1. Filter change................................................................................................................................. 34
5.4.2. Removing the counter flow heat exchangers...............................................................................34
5.4.3. Servicing and cleaning..................................................................................................................37
6. Technical data
6.1. Weight, corrosion class, temperature ranges, etc.............................................................................39
6.2. Compact filters......................................................................................................................................40
6.3. Bag filters.............................................................................................................................................. 41
6.4. Ingenerated water heating coil HCWi................................................................................................. 41
6.4.1. MVM motor valve ......................................................................................................................... 42
6.5. Capacity diagram via EXselectPro......................................................................................................42
6.6. Ordering spare parts............................................................................................................................ 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 per-
sonal 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 equipment.
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 liability for accidents caused by equipment
not used in accordance with the manual’s instructions and recommendations.
Supply air/extract
air
These instructions use the following terms as given in DS447-2013:
● Supply air (air blown in)
● Extract air (air removed)
● Outdoor air
● Exhaust air
Left/Right The term R for Right, indicates the supply air is to the right of the cooling unit, as seen from the operat-
ing side. The term L for Left, indicates the supply air is to the left.
Front page: Acces-
sories
The front page of the instruction manual contains a checklist, detailing the accessories delivered with
the VEX unit.
NB When retrofitting EXHAUSTO accessories, please update the checklist on the front page.
Warnings
Opening the air
handling unit
Do not open the service doors until the supply voltage has been disconnected at
the isolation switch and the fans have stopped. The isolation switch is positioned
on the left side of the connection box on top of the unit.
RD13497-01
ON OFF
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).
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Lock the air han-
dling unit during
operation
The VEX unit must always be locked during op-
eration:
● Use the cylinder lock in the handle. Re-
member to remove the key from the lock.
● Or use a padlock. Use the handle’s built-in
padlock fixture
Lås
Hængelåsbeslag
Rating plate The VEX unit rating plate shows:
● VEX model (1)
● Production order no. (2)
1
2
NB Always have the production number ready when contacting EXHAUSTO A/S.
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1. Product information
1.1 Designations used in these instructions
Model overview
Elements Explanation
RD12767-01
Fan
RD13531-01
Compact filter
RD12762-01
Bag filter
1,1,A or B Extract air spigot
NB: In cases where the unit has two spigots (extract air/
flue gases), the filter is always located by the extract air
spigot
1,2,A Exhaust air spigot
2,1,A Outdoor air spigot
2,2,A or B Supply air spigot
11
Air direction, extract air
22
Air direction, supply air
NB The sketch shows compact filters
Fan placement Air directions
LEFT
RD13532-01
1,1,A
2,1,A
2,2,A
1,2,A
1,1,B
2,2,B
1
2
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Fan placement Air directions
RIGHT
RD13533-01
1,1,A
2,1,A
2,2,A
1,2,A
1,1,B 2,2,B
1
2
NB Spigot location B option not available with outdoor models.
1.1.1 Designations used in these instructions
The simplified diagram shows a VEX unit with LEFT fan placement.
Component Function
BP1 Bypass damper extract air/exhaust air
BP2 Bypass damper outdoor air/supply air
BP3 Bypass shut-off dampers supply air
BT40/BT50 Fire thermostat, 40℃/50℃ (extract air)
BT70 Fire thermostat 70℃ (supply air)
MC1 Motor control, motor 1 (extract air)
MC2 Motor control, motor 2 (supply air)
HMI Control panel
HCWI Integrated water heating coil
LS Closing damper, outdoor air/exhaust air
M1 Extract air motor
M2 Supply air motor
MIO-CO2-DUCT CO2 sensor, duct
MIO-CO2-ROOM CO2 sensor, room
MIO-PIR PIR sensor
MIO-RH-ROOM Humidity sensor
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Component Function
MIO-TS-ROOM Temperature sensor, room
MIO-TS-DUCT Temperature sensor, extract air (external)
MPT1, P1 Airflow control, extract air
MPT1, P2 Filter monitor, extract air
MPT2, P1 Airflow control, supply air
MPT2, P2 Filter monitor, outdoor air
MPT3, P1 Ice detection
MPT-DUCT Pressure transmitter, constant pressure regulation
TE11 Temperature sensor, extract air
TE12 Temperature sensor, exhaust air
TE21 Temperature sensor, outdoor air
TE22 Temperature sensor, supply air
1.2 Application
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.
1.3 Location requirements
Positioning The air handling unit is designed for indoor fitting. The air handling unit can be ordered for outdoor in-
stallation (accessory Outdoor, OD).
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1.3.1 Space requirements
The drawing below indicates how much space is required to open the side-mounted doors for servicing,
replacing filters, cleaning, etc. The drawing shows compact filters.
2200
415
1366
RD13499-01
NB For servicing purposes, a free height of at least 200 mm is required above the unit’s connection box.
1.3.2 Requirements for underlying surface
When floor-mounting the unit, the surface must be:
● level (+/- 10 mm per metre)
● hard
● resistant to vibration
The VEX unit leg height can be adjusted: 55–110 mm.
1.3.3 Outlet
A condensation outlet must be installed in the immediate vicinity of the unit. See also “Mechanical fitting”
section.
1.3.4 Requirements for duct system
Silencers The duct system must be fitted with silencers specified by the Project Manager, which meet the re-
quirements of the operating area.
Bends A duct bend may be fitted immediately after the unit, because the airflow in the spigot has a uniformly
moderate speed profile, which results in negligible system pressure loss.
Insulation The duct system must be insulated against:
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● condensation
● sound leakage
● heating/cooling losses
Condensation Condensation in the ducts may occur when the exhaust/outdoor air has high humidity. 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.
1.4 Description
1.4.1 Design
Layout drawing,
Left model
The drawing below illustrates the construction of the unit, without doors:
The drawing shows compact filters.
1
3
45678910
12 13 15 1714 18 20
2,1,A 1,2,A
1,1,A
2,2,A
RD13500GB-01
2
11 16
1,1,B/ue gas
2,2,B
19
Layout drawing,
Right model
The drawing below illustrates the construction of the unit, without doors:
The drawing shows compact filters.
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13
1095 6 7 84
3
12
1
1517 141820
2,1,A
1,2,A
1,1,A
2,2,A
RD13501GB-01
2
1116
1,1,B/ue gas 2,2,B
19
Pos. no. Part Function
1 Spigot 1,1,A Extract air spigot The spigot can also be positioned on the top
of the unit (1,1,B). Does not apply to units designed for outdoor
fitting
2 Spigot 1,2,A Exhaust air spigot
3 Closing damper LS Closing damper, exhaust air, LSA (accessory).
4 Fan unit, exhaust air Removes "stale" air
5 Motor control, extract air
fan
Variably adjusts fan
6 MPT1 Measurement of pressure in extract air duct
7 Counterflow heat ex-
changer
6 counter flow heat exchangers made from aluminium, conduct
the heat from extract air to supply air
8 Outdoor air filter Filters outdoor air.
9 Spigot 2,1,A Outdoor air spigot
10 Closing damper LS Closing damper, outdoor air, LSF (accessory).
11 Integrated heating coil Heats supply air if heat recovery is insufficient (accessory).
12 Spigot 2,2,A Supply air spigot. The spigot can also be positioned in the top
of the unit (2,2,B). Does not apply to units designed for outdoor
fitting
13 Fan unit, supply air Blows air into the room
14 Motor control, supply air
fan
Variably adjusts fan
15 MPT2 Measures pressure in supply air duct
16 Connection box Connection box for supply voltage, external ventilation compo-
nents, HMI panel, BMS and Ethernet
17 Connection box Cover plate
18 HMI panel Operation of the control system
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Pos. no. Part Function
19 MPT3 Measures pressure loss across the counter flow heat exchang-
er
20 Extract air filter Filters extract air.
Cabinet The inside and outside of the cabinet is made of Aluzinc® The cabinet is insulated with 50 mm mineral
wool.
Fans The unit contains two centrifugal fans for exhaust air and supply air.
Counter flow heat
exchangers
The unit's counterflow heat exchangers are made of aluminium and are highly efficient. The counter-
flow heat exchangers can be taken out and cleaned. See section "Servicing".
Filters There are integral panel filters on both the extract air and outdoor air sides.
Bypass design The unit has a built-in double modulating bypass. In the case of summer operation without heat/cold
recovery, both outdoor air and extract air are directed around the heat exchanger to reduce energy
consumption.
1.5 Main aim
1.5.1 Dimensional drawing
The sketches show compact filters.
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VEX370H, Left
MN
RD13485-01
100 3)
1904
MN
1,2,A
1,1,A
2,2,A
2,1,A
2,2,A
2,1,A
1,1,A
1,2,A
DN32
1)
2)
200
1500880
200
984
1366
1200
200
300 600
1082
1800
600
318
1100
600
600
1200
3851104
24
83
600 600 234
880
83
120056 1200 56
20 3268 20
839
274
142
1) Allow for space in front of the VEX unit, so the doors can be opened
2) Allow for free height over the VEX unit, so the connection box can be serviced
3) The legs under the VEX unit can be adjusted for height between 55mm and 110mm.
See "Space Requirements" section.
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VEX370C, Right
RD13490-01
MN
MN
1100 600
1,1,A
1,2,A
20
24
83
56
318 600
234
880
984
600
1200
1,2,A
1,1,A
1200
200
DN32
1500
3268
385
1)
1366
200
2,2,A
2,1,A
1200
1200
1104
600
880
200
83
56
142
300 600
273
2,1,A
20
1082 600
839
1800
2,2,A
2)
1904
100 3)
1) Allow for space in front of the VEX unit, so the doors can be opened
2) Allow for free height over the VEX unit, so the connection box can be serviced
3) The legs under the VEX unit can be adjusted for height between 55mm and 110mm.
See "Space Requirements" section.
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2. Handling
2.1 Unpacking
2.1.1 Once the VEX has arrived
● Check the air handling unit and any supplied accessories for any transport damage immediately on
arrival at the assembly site.
● Check that the delivery is complete.
If there is damage or something is missing, point this out immediately to the haulier.
Supplied compo-
nents
The following components are supplied:
● VEX unit with associated base.
● Supplied accessories (as indicated in the checklist on the front page of the instructions)
Packaging The unit is delivered in three sections on separate disposable pallets; packed in cardboard and clear
plastic. The base is packed in a wooden box.
Unpacking Depending on the installation site's spatial limitations, unpacking can be done in the following manner:
● Unpack and assemble the base and sections and subsequently transport the VEX unit to the site
or
● set up the base at the installation side and mount the sections on the base afterwards.
Base assembly is described in section 3.1.
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 ven-
tilation 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.
2.1.2 Weight
Sections Weight
Fan section 2 x 156 kg
Counter flow heat exchanger section 310 kg
Base 80 kg
Total weight 702 kg
2.1.3 Weight
Sections Weight
Fan section 2 x 150 kg
Counter flow heat exchanger section 260 kg
Base 75 kg
Total weight 635 kg
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2.2 Transport
2.2.1 Passage through openings
The sections' prin-
cipal dimensions
Measurements are based on the exact dimensions of the VEX unit.
The VEX unit is shown with compact filters.
1500
1153
1700
1704
1366
900
RD13504-01
Width - fan sections The list below shows how large an opening has to be for the fan sections to pass through:
If the opening width is Then
Less than 900 mm The unit will not pass through
Between 900 and 1,153 mm For fan section with integrated heating coil:
● disassemble the integrated heating coil as descri-
bed in the section "Disassembly of integrated heat-
ing coil".
Greater than 1153 mm The unit can pass through
Width - heat ex-
changer section
The list below shows how large an opening has to be for the heat exchanger section to pass through:
If the opening width is Then
Less than 1,366 mm passage is not possible, unless the VEX is constructed
and delivered in a split version (agreed at time of order).
See separate instructions.
Greater than 1,366 mm The unit can pass through
VEX370 supplied in
split version
VEX370 can be ordered as a SPLIT 1 or SPLIT 2 model:
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Model Conditions
SPLIT 1 ● VEX370 is supplied with normal fan sections, but
the heat recovery section can be separated for
transport through door openings of 900 x 2000 mm
● The VEX is assembled and joints sealed on site by
the installer in accordance with the supplied in-
structions
SPLIT 2 ● VEX370 is supplied in assembed state but without
joint sealing
● The VEX is ready for disassembly, transport into
the building, reassembly and joint sealing by certi-
fied personnel
2.2.2 Internal transport with reduced weight
Weight reduction The weight can be reduced during transport by removing the service doors, fan units and counter flow
heat exchanger. The table below shows the how much weight is reduced when the subcomponents are
removed.
Section Subcomponents Weight
Fan section, 2 x 220 kg
Fan section, empty cabinet 150 kg
Door 24 kg
Fan unit 40 kg
Compact or bag filters, 3 items of 2 kg weight 6 kg
Exchanger section, 1 x 430 kg
Exchanger section, empty cabinet 285 kg
Counter flow heat exchangers, 6 x 19 kg 114 kg
Doors, 2 x 15.5 kg 31 kg
Integrated heating coil HCWI, 58 kg
Base, 1 x 90 kg
Total weight VEX370 unit 1018 kg
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Removing the serv-
ice doors
To remove the service doors:
RD13502-01
AB
Detail A
Detail B
1
AHow to remove the doors (2 in no.) to the fan sections:
● Open the door
● Tap the hinge door pin out from below using a small pin bolt or similar
● Lift the door off (Note - weight 23.5 kg).
BHow to remove the doors (2 in no.) to the heat exchanger sections:
● Open the door
● Unscrew the door hinge from the front panel (1) and take the door off.
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To remove the fan
unit
1
RD13503-01
DETAIL A
2
A
Step Action
1 Remove the fixing screws (1) on the sliding rail (out towards the operating side)
2 Cut the cable ties holding the motor cable and the cable ties holding the measuring hose
3 Pull the fan unit out to the end-stop (a screw on each rail acts as a stop)
4 Remove the supply cable and the control cable in the motor control.
5 Remove the two end-stops (screws one on the sliding rail (2)). The fan unit can now be lifted
off.
NB: A single fan unit weighs 40 kg.
Removing the coun-
ter flow heat ex-
changers
See section "Servicing"
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2.2.3 Disassembly of integrated heating coil, HCW370I
1
2
RD13525-01
RD13526-01
3
Step Action
1 Support the heating coil before disassembling it.
NB: The heating coil weighs 58 kg. - make sure there are at least two persons to lift
the coil off.
2 Open the door of the fan section nearest the heating coil and release the two snap locks (1)
inside the VEX.
3 Then release the two snap locks (2) on the top
4 The heating coil can now be lifted from the four guide pins (3).
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3. Mechanical assembly
3.1 Installing the unit
3.1.1 Assembly instructions
The assembly of VEX370 is divided into 4 steps as shown below, see the following sections for a detailed
description of each step.
Step 1, assemble the base
RD13511-01
A
A
B
B
C
C
D
D
E
EF
F
F
F
G
G
G
H
Step 2, push the sections onto the base Step 3 - 4, tighten the VEX together
RD13512-01
1
1
2
2
RD13513-01
Base The unit must be assembled on the base – this is essential to ensure its airtight-
ness.
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