Exhausto VEX160CF Series User manual

VEX160CF Vertical HCW
with EXact2 control
VEX100CF
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:
VDI 6022
M5-compact filter, FP
F7-compact filter, FP
pieces, control panel, HMI
Motor valve, MVM ______Kvs-value
Closing damper, LS500-24, (LSA exhaust)
Closing damper, LS500-24, (LSF outdoor)
Closing damper, LSR500-24, with
spring-return (LSAR exhaust)
Closing damper, LSR500-24, with
spring-return (LSFR outdoor)
pieces, Fire thermostat, BT40
pieces, Fire thermostat, BT50
pieces, Fire thermostat, BT70
pieces, Constant pressure control, MPT-DUCT
Motion sensor, MIO-PIR
Humidity sensor, MIO-RH
CO2-sensor, MIO-CO2-DUCT
CO2-sensor, MIO-CO2-ROOM
Temperature sensor, MIO-TS-DUCT
Temperature sensor, MIO-TS-ROOM
Control for external cooling unit, MXCU
Mounting base, MSV160V
TS-RPT-X
Prod.order no.:
Sales order no.:
Original instructions
3005706-2017-06-08 VEX160CF V_HCW
EXHAUSTO A/S
Odensevej 76
GB-5550 Langeskov
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............................................................... 8
1.3.3. Condensation outlet......................................................................................... 8
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........................................................................................... 11
2. Handling
2.1. Unpacking.............................................................................................................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 ............................................................................................... 18
3.3.1. Principles for connecting the water heating coil.............................................18
3.3.2. MVM valve..................................................................................................... 20
4. Electrical installation
4.1. Electrical installation........................................................................................... 22
5. Maintenance, hygiene and servicing
5.1. Operating readings via the HMI panel................................................................23
5.2. Maintenance......................................................................................................... 23
5.2.1. Overview of maintenance intervals................................................................ 23
5.3. Hygiene (VEX100VDI only).................................................................................. 24
5.4. Servicing and cleaning........................................................................................24
5.4.1. Filter change.................................................................................................. 24
5.4.2. Cleaning the fans........................................................................................... 24
5.4.3. Cleaning the heating coils..............................................................................25
5.4.4. Removing and cleaning the counterflow heat exchanger.............................. 25
5.4.5. Cleaning the counterflow heat exchanger......................................................25
6. Technical data
6.1. Weight, corrosion class, temperature ranges, etc............................................27
6.2. Compact filters.....................................................................................................29
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6.3. Water heating system.......................................................................................... 30
6.3.1. MVM motor valve .......................................................................................... 30
6.4. Capacity diagram................................................................................................. 31
6.5. Ordering spare parts........................................................................................... 31
6.6. Environmental declaration..................................................................................32
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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 (air blown in)
● Extract air (air removed)
● Outdoor air
● Exhaust air
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.
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
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Warnings
Opening the air
handling unit Do not open the service doors until power has been disconnec-
ted at the isolation switch and the fans have stopped.
ON OFF
VEX100H
VEX100V
RD13318-01
No duct connection If one or more of the spigots is not connected to a duct: fit a pro-
tective net to the spigots with a maximum mesh size of 20 mm.
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
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.
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1. Product information
1.1 Designations used in these instructions
1.1.1 Simplified diagram
Component Function Standard/accesso-
ry
HCW Water heating coil Standard
TE-RPT Temperature sensor in return pipe from wa-
ter 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 supply pipe to the
heating coil
Standard
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Component Function Standard/accesso-
ry
TE-RPT-X Temperature sensor on external pipeline
from water heating coil
Accessories
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.
840
890
RD13898-01
NB: For servicing, the VEX must have a free height of at least 300 mm above the con-
nection box.
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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
1.3.3 Condensation outlet
A condensation outlet must be installed in the immediate vicinity of the unit. See also
"Mechanical assembly" 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 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.
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.
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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
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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 bypass-
es the heat exchanger.
3 Condensation tray Collects the condensate and drains it away from the counter-
flow heat exchanger 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 handling 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 bot-
tom of the air handling unit (2.1.A)
1.4.2 Parts of the VEX unit
Cabinet The inside and outside of the cabinet is made of Aluzinc® (DC TRANSLATED)
Kabinettet er isoleret med 50 mm mineraluld.
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 counterflow heat exchanger can be removed and cleaned.
Filters The unit includes integral compact filters for both extract air and supply air.
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1.5 Principal dimensions
VEX160V, Left The following drawing gives the principal dimensions:
165062 62
O500
470
1331
442
2,1,A
1,1,B
2,2,B
2,2,A 1,2,A
2,1,A
2,1,B
1,2,B
1,2,A
2,2,A
O
500
O500
388
375
1275
552
388
552
890
940*
RD13910-01
131 664
680
3/4"
N
M
M
N
470
470
40
359
1482
1832
14
329
647
1482
517
62
95**
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.
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VEX160V, Right The following drawing gives the principal dimensions:
O
500
O
500
O500
470
165062 62
470
1331
442
2,1,A
470
1,1,B
2,2,B
2,2,A
1,2,A
2,1,A
2,1,B
1,2,B
3/4"
40
359
1482
1832
14
329
647
1482
517
62
95**
1,2,A
2,2,A
388
375
1275
552
388
552
890
940*
131 664
680
RD13911-01
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.
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2. Handling
2.1 Unpacking
Supplied compo-
nents
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 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 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
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 trans-
port can be fitted as shown on
the drawing:
RD11116-02
RD11117-02
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Method Drawing
Using pallet truck or fork-lift
truck:
Lift the VEX unit on the disposa-
ble pallet.
IMPORTANT: If the disposable
pallet cannot be used, the forks
on the lifting equipment must be
long enough to prevent damage
to the bottom of the unit.
RD10536-02
Crane:
Never lift the VEX
unit with the lifting
brackets by using 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 specifica-
tions".
2.2.1 Passage through openings
Height VEX height is 1832 mm + any spigots at top (+62 mm) or 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 900 mm the unit will not pass through.
900–950 mm remove doors, see relevant section.
greater than 950 mm the unit can pass through.
* Measurements are based on the exact dimensions of the air handling unit
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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 serv-
ice doors, fans and counterflow heat exchanger. The table below shows how
much weight can be reduced by removing the various parts.
Parts Weights, VEX160CF
Fan, 2 items at 26 kg = 52 kg
Counter flow heat exchangers, 1 item at 46 kg
Doors, 2 items at 35 kg = 70 kg
Total weight 410 kg
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To remove the fan
unit
RD13916-01
Step Action
1 Remove the fixing screw from the sliding rail,
and release the ties on the motor cable.
2 Pull the fan unit out to the stop (two screws)
on the sliding rail.
3 Dismount the motor cable from the motor
control on the sliding panel and pull it to-
wards the motor through the rubber grom-
mets.
4 Remove the two sliding rail screws. The fan
unit can now be lifted off.
Note weight The fan units weigh 26 kg each - requiring two persons to lift
each unit.
Removal See section "Maintenance" for instructions for dismounting fans and counterflow
heat exchanger and for removal of filters.
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3. Mechanical assembly
3.1 Installation
Description It is important that the VEX is installed on a level surface, as this affects the col-
lection 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 "Re-
quirements 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 sepa-
rate instructions for installing the mounting base.
3.2 Condensation outlet
Drain the condensation outlet into a floor gully or similar. The
condensation outlet must be fitted with a water trap. See below.
Risk of frost Where there is a risk of frost: Insulate the condensation outlet
and protect it against frost - if necessary, using a heating cable.
3.2.1 Establishment of condensation outlet
Location The following two drawings show examples of how the drain from the condensa-
tion outlet can be established and the correct dimensions for the water trap:
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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 sup-
plied by EXHAUSTO).
RD10185-02
NB: If the VEX is erected on a mounting base, this will allow sufficient free height for
installing a water trap.
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 accord-
ance with applicable regulations and legislation.
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Type Principle Simplified diagram
Mixing
loop 1
Variable flow in the primary
circuit (supply) and constant
flow in secondary circuit
(VEX unit)
Mixing
loop 2
Variable flow in the primary
circuit (supply) and constant
flow in secondary circuit
(VEX unit)
a) When there is no heating
requirement, valve adjust-
ment must be based on the
required primary circuit water
flow
Do not connect the heating
coil like this!
Connection without circula-
tion pump risks frost damage!
RD12900-03
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Explanation of sim-
plified diagram
RD12642GB-02
II - A
III - B
I - AB
Shut-o valve*
Line regulating valve*
Non-return valve*
Three-way motor valve (MVM)
Water heating coil (HCW)/
Cooling coil CCW
Circulation pump*
Pressure dierence regulator*
Impurity trap*
*) not EXHAUSTO delivery (refer to the technical specifications in section 7).
Bleeding Following connection of water supply to the unit:
● Bleed the system thoroughly using the upper bleed screw on the water heat-
ing coil
Insufficient bleed-
ing
Insufficient bleeding can result in still water forming in the sys-
tem, which may result in frost-induced leaks during the winter.
Fitting motor valve The valve must not be fitted with the motor facing down
Insulate the supply
pipe and heating
coil
The pipes and post-heating coil must be insulated according to
applicable regulations
3.3.2 MVM valve
Screening Screen the valve motor from direct sunlight. Due to heat emissions, the valve mo-
tor must not be encapsulated (max. ambient temperature: 50°C).
Insulating the valve To ensure normal operation at ambient temperatures below 0°C, it is very impor-
tant that the valve section is insulated according to current standards/procedures.
MVM-OD, valve for
outdoor fitting
If MVM-OD (MVM intended for outdoor fitting) is used, the screening and insula-
tion are part of the delivery. MVM-OD is only possible for valve sizes below 6.3
Kvs.
Regulating proper-
ties
Optimal regulation is achieved when the differential pressure is between 5–20
kPa. See section "Technical specifications" to calculate Kvs.
Heat supply The heat supply must be constant.
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