Exhausto VEX300 Series Instruction Manual

VEX370HX
Mechanical guidelines
For third party control system
Product information........................................ Chapter 1 + 6
Mechanical assembly..................................... Chapter 2 + 3
Electrical installation.......................................Chapter 4
Maintenance...................................................Chapter 5
Unit supplied with (factory fitted):
The following accessories are supplied
separately:
M5-compact filter, FP
Bag filter, FB
F7-compact filter, FP
OD - roof for outdoor
Mounting base, (unassembled)
Motor controller
HCW370I - Integrated heating coil (water)
HCW-heating coil (water), duct-fitted
Motor valve, MVM ______Kvs-value
Motor valve outdoor, MVM-OD
(partially mounted)
DX cooling/heating coil
CCW-cold water coil
Closing damper, LS600x1200, (LSA exhaust)
Closing damper, LS600x1200, (LSF outdoor)
Closing damper, LSR600x1200, with
spring-return (LSAR exhaust)
Closing damper, LSR600x1200, with
spring-return (LSFR outdoor)
Serial no.:
Prod.order no.:
Sales order no.:
Original instructions
3004802-2018-01-05 VEX370HX
EXHAUSTO A/S
Odensevej 76
DK-5550 Langeskov
Tel. [phone]
Fax [phone]
[email protected]
www.exhausto.dk

1. Product information
1.1. Designations used in these instructions.............................................................6
Model overview................................................................................................ 6
1.1.1. Designations used in these instructions...........................................................7
1.2. Application............................................................................................................. 7
1.3. Location requirements.......................................................................................... 8
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......................................................................... 9
1.4. Description............................................................................................................. 9
1.4.1. VEX unit construction......................................................................................9
1.5. Main aim................................................................................................................11
1.5.1. Dimensional drawing......................................................................................11
2. Handling
2.1. Unpacking.............................................................................................................13
2.2. Transport.............................................................................................................. 13
2.2.1. Passage through openings .......................................................................... 13
2.2.2. Internal transport with reduced weight........................................................... 14
2.2.3. Disassembly of integrated heating coil, HCW370I ........................................17
3. Mechanical assembly
3.1. Installing the unit................................................................................................. 18
3.1.1. Assembly instructions.................................................................................... 18
3.1.2. Step 1–4.........................................................................................................19
3.2. Condensation drain............................................................................................. 24
3.2.1. Establishment of condensation outlet............................................................ 24
3.3. Integrated water heating coil.............................................................................. 25
3.3.1. Principles for connecting the water heating coil.............................................25
3.3.2. MVM valve..................................................................................................... 27
4. Electrical installation
4.1. Electrical installation........................................................................................... 28
5. Maintenance
5.1. Maintenance Schedule........................................................................................ 29
5.2. Hygiene.................................................................................................................30
5.3. Service.................................................................................................................. 30
5.3.1. Filter change.................................................................................................. 30
5.3.2. Removing the counter flow heat exchangers.................................................30
5.3.3. Servicing and cleaning...................................................................................33
5.4. Airflow measurement.......................................................................................... 34
5.4.1. Determining airflow and pressure.................................................................. 34
6. Technical data
6.1. Weight, corrosion class, temperature ranges, etc............................................37
6.2. Compact filters.....................................................................................................38
3004802-2018-01-05
2/44

6.3. Bag filters............................................................................................................. 39
6.4. Integrated water heating coil HCWi....................................................................39
6.4.1. MVM motor valve .......................................................................................... 40
6.5. Capacity diagram................................................................................................. 41
6.5.1. Capacity diagram, ventilation with heat recovery...........................................41
6.5.2. Capacity diagram, ventilation with bypass operation..................................... 42
6.6. Ordering spare parts........................................................................................... 42
3004802-2018-01-05
3/44

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
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 operating 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 acces-
sories delivered with the VEX unit.
NB When retrofitting EXHAUSTO accessories, please update the checklist on
the front page.
Warnings
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).
Lock the air han-
dling unit during
operation
The VEX unit must always be locked
during operation:
● Use the cylinder lock in the han-
dle. Remember to remove the key
from the lock.
● Or use a padlock. Use the han-
dle’s built-in padlock fixture.
Lock
Padlock fitting
3004802-2018-01-05
4/44

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.
3004802-2018-01-05
5/44

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 lo-
cated 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
3004802-2018-01-05 Product information
6/44

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 with motor (extract air - exhaust air)
BP2 + BP 3 Bypass damper with motor (outdoor air - supply air)
HWCi Integrated water heating coil
MC1 Motor control, motor 1 (exhaust air)
MC2 Motor control, motor 2 (supply air)
M1 Exhaust motor
M2 Supply air motor
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.
3004802-2018-01-05 Product information
7/44

1.3 Location requirements
Positioning The air handling unit is designed for indoor fitting. The air handling unit can be or-
dered for outdoor installation (accessory Outdoor, OD).
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 fil-
ters.
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.
3004802-2018-01-05 Product information
8/44

1.3.4 Requirements for duct system
Silencers The duct system must be fitted with silencers specified by the Project Manager,
which meet the requirements 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:
● condensation
● sound leakage
● heating/cooling losses
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.
1.4 Description
1.4.1 VEX unit construction
Layout drawing,
Left model
The drawing below illustrates the construction of the unit, without doors:
The drawing shows compact filters.
1
3
456789
11 12 1513 16
2,1,A 1,2,A
1,1,A
2,2,A
RD13528GB-01
2
10 14
1,1,B/ue gas
2,2,B
3004802-2018-01-05 Product information
9/44

Layout drawing,
Right model
RD13529GB-01
1,1,B/ue gas
12
985 6 74
3
11
1
15 1316
2,1,A
1,2,A
1,1,A
2,2,A
2
1014
2,2,B
Pos.
no.
Part Function
1 Spigot 1,1,A Extract air spigot The spigot can also be posi-
tioned 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 Counterflow heat ex-
changer
Six aluminium counter flow heat exchangers
7 Outdoor air filter Filters outdoor air
8 Spigot 2,1,A Outdoor air spigot
9 Closing damper LS Closing damper, outdoor air, LSF (accessory).
10 Heating coil Integrated heating coil Heats supply air if heat
recovery is insufficient (accessory).
11 Spigot 2,2,A Supply air spigot. The spigot can also be posi-
tioned in the top of the unit (2,2,B). Does not
apply to units designed for outdoor fitting
12 Fan unit, supply air Blows air into the room
13 Motor control, extract
air fan
Variably adjusts fan
14 Connection box Connection terminal board
15 Connection box Cover plate
16 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.
3004802-2018-01-05 Product information
10/44

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 effi-
cient. The counterflow heat exchangers can be taken out and cleaned. See sec-
tion "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.
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.
3004802-2018-01-05 Product information
11/44

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.
3004802-2018-01-05 Product information
12/44

2. Handling
2.1 Unpacking
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 in-
structions)
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 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.
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
3004802-2018-01-05 Handling
13/44

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 described in the section "Disassem-
bly of integrated heating 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 sec-
tion 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 in-
structions.
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:
Model Conditions
SPLIT 1 ● VEX370 is supplied with normal fan sec-
tions, 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 instructions
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 certified 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
3004802-2018-01-05 Handling
14/44

Section Subcomponents Weight
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
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).
3004802-2018-01-05 Handling
15/44

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.
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 operat-
ing 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.
3004802-2018-01-05 Handling
16/44

Removing the coun-
ter flow heat ex-
changers
See section "Servicing"
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).
3004802-2018-01-05 Handling
17/44

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 section joints
RD13512-01
1
1
22
RD13513-01
Base The unit must be assembled on the base – this is essential to en-
sure its airtightness.
Dimensional draw-
ing
RD13576-01
1252 1312
1608 1608
3216
3266
3004802-2018-01-05 Mechanical assembly
18/44

3.1.2 Step 1–4
Step 1, Base: Assemble the base as shown in the drawing below.
Base assembly Drawing
The base consists of the
following parts:
6x 12x
M10x25 M10
2x
2x
2x
2x
2x
4x
4x
6x 12x
4xM10x35
RD13514-01
A)
B)
C)
D)
E)
F)
G)
M20
42x 42x 4x
1x
H)
3004802-2018-01-05 Mechanical assembly
19/44

Base assembly Drawing
The following tools are re-
quired:
2x17mm 2x30mm
RD12783-01
Assemble the base levelling
bolts, by tapping the threa-
ded bar securely into the
foot.
Screw a nut onto the threa-
ded bar and put a washer
on.
RD12785-01
RD12786-02
40
Lay the base parts on the
floor with the top facing
downwards, as shown in
the illustration.
RD13511-01
A
A
B
B
C
C
D
D
E
EF
F
F
F
G
G
G
H
3004802-2018-01-05 Mechanical assembly
20/44