Exhausto VEX140CF H User manual

VEX140CF Vertical HCW
with EXact2 control
Product information............................................................... Chapter 1 + 6
Mechanical assembly............................................................ Chapter 2 + 3
Electrical installation.............................................................. Chapter 4
Maintenance.......................................................................... Chapter 5
Original instructions
3005688-2023-03-28
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..............................................................................................6
1.1.1. Simplified diagram.......................................................................................................................... 6
1.2. Application.............................................................................................................................................. 7
1.3. Location requirements........................................................................................................................... 7
1.3.1. Space requirements........................................................................................................................7
1.3.2. Requirements for underlying surface.............................................................................................. 7
1.3.3. Condensation outlet........................................................................................................................ 7
1.3.4. Requirements for duct system........................................................................................................ 8
1.4. Description.............................................................................................................................................. 9
1.4.1. VEX unit construction.....................................................................................................................9
1.4.2. Parts of the VEX unit.....................................................................................................................10
1.5. Principal dimensions............................................................................................................................10
2. Handling
2.1. Unpacking............................................................................................................................................. 13
2.1.1. Once the VEX has arrived ........................................................................................................... 13
2.2. Transport............................................................................................................................................... 13
2.2.1. Passage through openings........................................................................................................... 14
2.2.2. Internal transport with reduced weight.......................................................................................... 15
3. Mechanical assembly
3.1. Installation.............................................................................................................................................17
3.1.1. Installation directly on floor........................................................................................................... 17
3.1.2. Installation on mounting base....................................................................................................... 17
3.2. Condensation outlet............................................................................................................................. 17
3.2.1. Establishment of condensation outlet........................................................................................... 17
3.3. Water heating coil.................................................................................................................................19
3.3.1. Principles for connecting the water heating coil............................................................................19
3.3.2. Bleeding of coils............................................................................................................................20
3.3.3. Bleeding of coils............................................................................................................................20
3.3.4. MVM valve.................................................................................................................................... 21
4. Electrical installation
4.1. Electrical installation............................................................................................................................23
5. Maintenance, hygiene and servicing
5.1. Operating readings via the HMI panel................................................................................................ 24
5.2. Maintenance.......................................................................................................................................... 24
5.2.1. Overview of maintenance intervals............................................................................................... 24
5.3. Hygiene (VEX100VDI only)...................................................................................................................25
5.4. Servicing and cleaning.........................................................................................................................25
5.4.1. Filter change................................................................................................................................. 25
5.4.2. Cleaning the fans.......................................................................................................................... 25
5.4.3. Cleaning the heating coils.............................................................................................................25
5.4.4. Removing and cleaning the counterflow heat exchangers........................................................... 25
5.4.5. Cleaning the counterflow heat exchanger.....................................................................................26
6. Technical data
6.1. Weight, corrosion class, temperature ranges, etc.............................................................................28
6.2. Panel filters........................................................................................................................................... 29
6.3. Water heating system...........................................................................................................................30
6.3.1. MVM motor valve ......................................................................................................................... 30
6.4. Capacity diagram..................................................................................................................................30
6.5. EC Declaration of Conformity..............................................................................................................30
6.6. Ordering spare parts............................................................................................................................ 31
6.7. Environmental declaration...................................................................................................................31
3005688-2023-03-28
2/32

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
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 designated with L for Left
Warnings
Opening the air
handling unit
Do not open the service doors until power has been disconnected at the isolation switch and the fans
have stopped.
ON OFF
VEX100H
VEX100V
RD13318-01
3005688-2023-03-28
3/32

Warnings
Opening the air
handling unit Do not open the service doors until power has been disconnected at the isolation
switch and the fans have stopped.
ON OFF
VEX100H
VEX100V
RD13318-01
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
Information plate The VEX unit rating plate shows:
● VEX unit, type (1)
● production number (2)
1
2
NB: Always have the production number ready when contacting EXHAUSTO A/S.
3005688-2023-03-28
4/32

Choose the correct documentation for the task...
Find your information.
Supplied
documentation
Assembly and
installation
instructions
Electrical installation
guide
EXact2
Basic instructions
EXact2
menu guide
Print out from
calculation
program
Mechanical
assembly »
Electrical
installation »
Start-up -
operation »
Maintenance
-
Service »
3005688-2023-03-28
5/32

1. Product information
1.1 Designations used in these instructions
1.1.1 Simplified diagram
Component Function Standard/accessory
HCW Water heating coil Standard
TE-RPT Temperature sensor in return pipe from water heating coil (internal) Standard
MPT1, P1 Airflow control, extract air Accessories
MPT1, P2 Airflow control, supply air Accessories
MPT2, P1 Filter monitor, extract air Accessories
MPT2, P2 Filter monitor, outdoor air Accessories
MPT3, P1 Ice detection Accessories
LS(F)/LS(F)R Closing damper, outdoor air Standard
LS(A)/LS(A)R Closing damper, exhaust air Accessories
BP1 Bypass damper Standard
M1 Extract air motor Standard
M2 Supply air motor Standard
MC1 Motor controller, motor 1 Standard
MC2 Motor controller, motor 2 Standard
TE11 Temperature sensor, extract air Standard
TE12 Temperature sensor, exhaust air Standard
TE21 Temperature sensor, outdoor air Standard
TE22 Temperature sensor, supply air Standard
Tice Temperature sensor for ice in exchanger Standard
Main Board Connection box for MVM, CP and TE-RPT-X and TE-SPT Standard
MVM Motor valve Accessories
CP Circulation pump Accessories
TE-SPT Temperature sensor on feed pipe to the heating coil Standard
TE-RPT-X Temperature sensor on external pipeline from water heating coil Accessories
3005688-2023-03-28 Product information
6/32

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 unit is designed for indoor fitting.
1.3.1 Space requirements
The drawing below indicates how much space is needed for opening the doors and servicing the unit,
e.g. changing filters, cleaning, servicing, etc.
652
700
RD13931-01
NB: For servicing, the VEX must have a free height of at least 300 mm opposite the connection box.
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
1.3.3 Condensation outlet
A condensation outlet must be installed in the immediate vicinity of the unit. See also "Mechanical assem-
bly" section.
3005688-2023-03-28 Product information
7/32

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:
● 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.
Outdoor air intake The outdoor air intake must be dimensioned with sufficiently low airflow to prevent rain and snow being
drawn into the duct system.
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.
3005688-2023-03-28 Product information
8/32

1.4 Description
1.4.1 VEX unit construction
The following drawings show an overview of the construction of left and right-hand models of VEX units
(shown without doors).
1,1,B 2,1,B
1,2,B
2,2,B
13
4
5
6
12
16
8
17
10 11
7
9
15
2
13
24
25
RD13893-01
Left
14
18
19
20
21
2223
1,1,B
2,2,B
4
5
6
8
7
9
12 1011
16
17
15
13
24
14
18
19
20
21
2,1,B
1,2,B
13225 22 23
RD13894-01
Right
3005688-2023-03-28 Product information
9/32

Pos. Part Function
1 Outdoor air filter Filters outdoor air.
2 Bypass damper For operation with heat recovery, the bypass damper is closed so that the air
passes through the counterflow heat exchanger. For bypass operation, the
damper is open, and the air bypasses the heat exchanger.
3 Condensation tray Collects the condensate and drains it away from the counterflow heat exchang-
er to the condensation outlet
4 Condensation outlet Channels condensate to the drain.
5 Extract air filter Filters extract air.
6 Spigot 1.1.B Extract air spigot
7 Counterflow heat exchanger Conducts heat from extract air to supply air.
8 Water heating coil with bleed screw Heats supply air if heat recovery is insufficient.
9 Spigot 2,2,B Supply air spigot. The spigot can also be positioned on the top of the air han-
dling unit (2,2,A).
10 Supply air fan For outdoor air/supply air.
11 Extract air fan For exhaust/extract air.
12 Spigot 1,2,B Extract air spigot The spigot can also be positioned on the top of the unit
(1,2,A).
13 Closing damper LS Closing damper, exhaust air, LSA (accessory).
14 MPT1 (AFC) Airflow control (accessory).
15 Isolation switch Connects/disconnects current.
16 Connection box Connection of accessories.
17 Terminal row Connection of accessories to ventilation unit.
18 Bypass motor Opens/closes bypass damper.
19 Extraction plate Positioning of motor control components.
20 HMI panel Control panel.
21 EXact2 control Control system.
22 MPT3 (DEP) Ice detection (accessory).
23 MPT2 (MPTF) Filter monitor (accessory).
24 Closing damper LS LSF, outdoor air closing damper
25 Spigot 2,1,B Outdoor air spigot The spigot can also be positioned at the bottom of the air
handling unit (2.1.A)
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 unit contains two centrifugal fans with backward curved blades for extract air and supply air.
Counterflow heat
exchanger
The counterflow heat exchanger in the unit is mounted with a modulating bypass damper. The counter-
flow heat exchanger can be removed and cleaned.
Filters The unit includes integral panel filters for both extract air and supply air.
1.5 Principal dimensions
VEX140V, Left The following drawing gives the principal dimensions:
3005688-2023-03-28 Product information
10/32

62 1300 62
349
1072
375
O
315
2,1,A
2,2,B
2,2,A 1,2,A
1,2,B
1,1,B 2,1,B
2,1,A
2,2,A
1,2,A
O315
O
315
39
266
426
288
1012
475
700
750*
475
275 275
RD13902-01
122
532
494
1/2"
N
M
M
N
375
375
14
236
450
1089
95 **
1089
1379
NB: The drawing shows all of the spigot positioning options.
* Allow a distance for service in front of the unit equivalent to the unit depth.
** Allow a min. of 300 mm free height for service.
VEX140V, Right The following drawing gives the principal dimensions:
3005688-2023-03-28 Product information
11/32

2,1,A
62 1300 62
349
1072
375
O
315
375
375
2,2,B
2,2,A1,2,A
1,2,B
1,1,B
2,1,B
2,1,A
39
266
426
1/2"
14
236
450
1089
95 **
1089
1379
2,2,A
1,2,A
O
315
O315
288
1012
475
700
750*
475
275 275
122
532
494
RD13903-01
N
M
M
N
NB: The drawing shows all of the spigot positioning options.
* Allow a distance for service in front of the unit equivalent to the unit depth.
** Allow a min. of 300 mm free height for service.
3005688-2023-03-28 Product information
12/32

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.
Delivery The following components are supplied:
● VEX unit
● Accessories supplied
Packaging The unit is delivered on a disposable pallet 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 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.
2.2 Transport
Transport Transport the VEX unit on the disposable pallet. Do not lift it with the spigots or connection box.
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 drawing:
RD11116-02
RD11117-02
3005688-2023-03-28 Handling
13/32

Method Drawing
Using pallet truck or fork-lift truck:
Lift the VEX unit on the disposable pallet.
IMPORTANT: If the disposable pallet
cannot be used, the forks on the lifting
equipment must be long enough to pre-
vent damage to the bottom of the unit.
RD10536-02
Crane:
Never lift the VEX unit with
the lifting brackets by us-
ing a crane.
Use straps and lifting yokes to prevent
damage to the unit.
RD13392-01
Weight For information about the weight of the unit, see the section "Technical specifications".
2.2.1 Passage through openings
Height VEX height is 1377 mm + any spigot in top (+62 mm) and bottom (+62 mm).
Width The list below shows how wide the opening has to be for the VEX unit to pass through:
If the opening width is* Then
less than 710 mm the unit will not pass through.
710–760 mm remove doors, see relevant section.
greater than 760 mm the unit can pass through.
* Measurements are based on the exact dimensions of the air handling unit
3005688-2023-03-28 Handling
14/32

2.2.2 Internal transport with reduced weight
Removing the serv-
ice doors
To remove the service doors:
● Open both doors.
● Using a small punch or similar tool, knock the pin out of the top of the door hinges (A), and lift the
doors off.
Detail A RD11097-02
A
Weight reduction The air handling unit's weight can be reduced during transport by removing service doors, fans and
counterflow heat exchanger. The table below shows how much weight can be reduced by removing the
various parts.
Parts Weights, VEX140CF
Fan, 2 items at 15.5 kg = 31 kg
Counter flow heat exchangers, 1 item at 20 kg
Doors, 2 items at 20 kg = 40 kg
Total weight 220 kg
3005688-2023-03-28 Handling
15/32

To remove the fan
unit
RD13916-01
Step Action
1 Remove the fixing screw from the sliding rail, and re-
lease the ties on the motor cable.
2 Pull the fan unit out to the stop (two screws) on the slid-
ing rail.
3 Dismount the motor cable from the motor control on the
sliding panel and pull it towards the motor through the
rubber grommets.
4 Remove the two sliding rail screws. The fan unit can
now be lifted off.
Removal See section "Maintenance" for instructions for dismounting fans and counterflow heat exchanger and
for removal of filters.
3005688-2023-03-28 Handling
16/32

3. Mechanical assembly
3.1 Installation
Description It is important that the VEX is installed on a level surface, as this affects the collection and draining of
the condensate.
3.1.1 Installation directly on floor
The requirements for the floor surface must be met, see the section entitled "Requirements for underlying
surface".
NB After installation, check the VEX unit is completely level.
3.1.2 Installation on mounting base
The EXHAUSTO mounting base enables the VEX unit to be installed correctly. The base is equipped with
adjustable levelling screws, so that the air handling unit can be fitted horizontally on a surface that is not
level ( +/- 20 mm per metre). See the separate instructions for installing the mounting base.
3.2 Condensation outlet
Connection of the condensation outlet must be made by an authorised plumber.
Drain the condensation outlet into a floor gully or similar. The condensation out-
let must be fitted with a water trap. See below.
Risk of frost Where there is a risk of frost: It is recommended to protect the condensation out-
let against frost damage. Fit a SIPHONE electrical heat tracing device on the out-
let before the pipes are insulated. For fitting, see the device’s fitting instructions.
3.2.1 Establishment of condensation outlet
Location The following two drawings show examples of how the drain from the condensation outlet can be es-
tablished and the correct dimensions for the water trap:
3005688-2023-03-28 Mechanical assembly
17/32

Solution with si-
phon water trap (ac-
cessory)
The siphon water trap is easy to install and service.
120
RD13442-01
Solution with HT
pipe
Use HT pipe (HT, DN32, DIN4102), if the above solution is not employed (not supplied by EXHAUS-
TO).
RD10185-02
NB: If the VEX is erected on a mounting base, this will allow sufficient free height for installing a water trap.
3005688-2023-03-28 Mechanical assembly
18/32

3.3 Water heating coil
3.3.1 Principles for connecting the water heating coil
Mixing loop The diagrams below are simplified. The dimensioning of valves, pipes, etc. and heating coil connection
must always be carried out by authorised fitters in accordance with applicable regulations and legisla-
tion.
Type Method Simplified diagram
Mixing loop
1
Variable flow in the primary circuit
(supply) and constant flow in secon-
dary circuit (VEX unit)
Mixing loop
2
Constant flow in the primary circuit
(supply) and the secondary circuit
(VEX unit)
a) When there is no heating require-
ment, valve adjustment must be
based on the required primary circuit
water flow
Do not connect the heating coil like
this!
Connection without circulation pump
risks frost damage!
RD12900-03
3005688-2023-03-28 Mechanical assembly
19/32

Explanation of sim-
plified diagram
RD12642DK-02
II - A
III - B
I - AB
Afspærringsventil*
Strengreguleringsventil*
Kontraventil*
3 vejs motorventil (MVM)
Vandvarmeflade (HCW)/
Isvandsflade CCW)
Cirkulationspumpe*
Trykdifferensregulator*
Snavssamler*
*) not EXHAUSTO delivery (refer to the technical specifications).
3.3.2 Bleeding of coils
Bleeding It is the responsibility of the contractor/customer to ensure that the bleeding option is correctly installed
and that the building owner is informed of the risk of insufficient bleeding, regardless of whether the
coil(s) in question are built into a ventilation system or mounted separately in the duct system.
The following must be observed when bleeding liquid-coupled coils/heating and cooling batteries:
● The heating/cooling system must be arranged in accordance with DS469 so that they can be bled.
● Ventilation systems installed above suspended ceilings or outside on roofs are often the top point
of the pipe system and therefore air is often collected in the system here.
● Bleeding points must be easily accessible.
● Bleeding points must be selected so that all air in the system can be bled.
● Air pots and automatic air vents should be considered so that air is collected before it enters the
coils, despite the fact that many coils are equipped with a bleeding option.
● A lack of bleeding can lead to a lack of water flow and, ultimately, frost damage to the coils and
subsequent water damage to the building.
Following connection of water supply to the unit:
● Bleed the system thoroughly using the upper bleed screw on the water coil.
Air screw
3.3.3 Bleeding of coils
Bleeding It is the responsibility of the contractor/customer to ensure that the bleeding option is correctly installed
and that the building owner is informed of the risk of insufficient bleeding, regardless of whether the
coil(s) in question are built into a ventilation system or mounted separately in the duct system.
3005688-2023-03-28 Mechanical assembly
20/32