IV Produkt Envistar Flex User manual

Assembly Instructions
Envistar Flex
Size 060-1540
Translation of the original instructions

Assembly Instructions
Envistar Flex
Ver 2_en_2022-06-27
CONTENTS
1 SAFETY ................................................................................................................................ 7
1.1 Intended use.................................................................................................. 7
1.2 General safety ............................................................................................... 7
1.3 Product liability ............................................................................................. 9
1.4 Receive, unpack ......................................................................................... 10
1.5 Storage, transport....................................................................................... 10
1.6 Lifting the unit, unit parts ........................................................................... 10
1.7 After the lifetime of the product ................................................................ 10
2 GENERAL INFORMATION ................................................................................................ 11
2.1 IV Produkt’s order portal, support............................................................. 11
2.2 Information messages, not safety-related ............................................... 11
2.3 Tools for assembly ...................................................................................... 11
2.4 Spare parts .................................................................................................. 11
2.5 Symbols on drawings and in manual ........................................................ 12
3 DESCRIPTION OF THE UNIT............................................................................................ 13
3.1 Configuration of the unit ............................................................................ 13
3.2 Orientation of the unit’s sides/parts.......................................................... 13
4 LIFT THE UNIT................................................................................................................... 14
4.1 Lifting with forklift....................................................................................... 15
4.2 Lifting brackets, pre-mounted lifting lugs, spreader bar ........................ 15
4.3 Lift of double stacked parts (parts on top of each other) ....................... 15
4.4 Lift with bracket EMMT-08, for 50 profile ................................................. 16
4.5 Lift with bracket EMMT-12, for 60 profile ................................................. 17
4.6 Lifting of unit pre-mounted on support .................................................... 18
4.7 Lifting of unit pre-mounted on base frame............................................... 19
4.8 Lifting thermal wheel (1250-D1, 1540-D1) from truck.............................. 20
5 PREPARE ASSEMBLY ....................................................................................................... 21
5.1 Sectioned configuration (Easy Access) .................................................... 21
5.2 Create service area, electrical safe distance ........................................... 21
5.3 Prepare for outdoor version....................................................................... 22
6 ASSEMBLY, GENERAL ...................................................................................................... 23
6.1 Assembly, step by step............................................................................... 24
6.2 Assemble fan room support (EMMT-05) ................................................... 24
6.3 Fit sealing strip ........................................................................................... 25
6.3.1 Sealing strip in outdoor version .................................................................................26
6.4 Join the parts together............................................................................... 26
6.4.1 Join with screw joints.................................................................................................26
6.4.2 Join together with tensioning lugs .............................................................................27
6.4.3 Join with guide pins ...................................................................................................27

Ver 2_en_2022-06-27
Assembly Instructions
Envistar Flex
6.5 Quick connectors........................................................................................ 28
6.5.1 Quick connector, signal feed .....................................................................................28
6.5.2 Quick connector, power supply .................................................................................28
6.6 Disassemble/Reassemble/Refit Fan ......................................................... 29
6.6.1 Disassembling the fan................................................................................................29
6.7 Fit cover detail on join ................................................................................ 30
7 ASSEMBLY, SECTIONED CONFIGURATION ................................................................... 31
7.1 Assemble control cabinet .......................................................................... 32
7.2 Assemble fan and filter (ENF) .................................................................... 33
7.3 Assemble counter-flow heat exchanger (EXM)........................................ 34
7.4 Assemble rotary heat exchanger (EXR) .................................................... 35
7.5 Assemble cooling unit EcoCooler (ECO/ECX), ThermoCooler HP......... 39
7.5.1 Assemble the media cabinet sheet metal strips .......................................................40
7.5.2 Disassemble trim heater/coil......................................................................................40
7.5.3 Reassemble trim heater/coil ......................................................................................40
7.6 Assemble mixing section (EEC), media section (EMR) ........................... 41
7.7 Assemble smoke gas connection (EKR)................................................... 41
7.8 Assemble cross-flow section (ERX/EKX) ................................................. 42
7.9 Assemble coil recovery (EXL) .................................................................... 42
8 CONNECT COIL, WATER .................................................................................................. 43
8.1 Connect coil to pipelines............................................................................ 43
8.2 Connect heating coil................................................................................... 43
8.2.1 Heating coil (ELEV) in unit, (EMT-VV) in duct .............................................................43
8.3 Connect cooling coil................................................................................... 44
8.3.1 Cooling coil (ELBC) in unit, (ESET-VK) in duct ...........................................................44
8.4 Connect frost protection sensor ............................................................... 44
8.4.1 Connect immersion sensor........................................................................................44
8.4.2 Contact clamp on detector........................................................................................45
8.5 Connect pipes for bleeding and drainage ................................................ 45
8.6 Assemble valve actuator ............................................................................ 46
8.7 Assemble pump, pipework package ........................................................ 46
9 CONNECT COIL, ELECTRIC............................................................................................. 47
9.1 Connect air heater electric (ESET-EV), (ELEE), trim heater (ECXT-EV),
(TCHT-EV)..................................................................................................... 47
9.1.1 Heating coil electric, (ELEE) in unit, (ESET-VK) in duct..............................................47
9.1.2 Trim heater, EcoCooler (ECXT-EV), Thermocooler HP (TCHT-EV) .............................47
10 CONNECT CONTROL EQUIPMENT................................................................................. 48
10.1 Connect quick connectors between unit parts........................................ 48
10.2 Connect hoses for pressure control ......................................................... 48
10.3 Connect supply air temperature sensor ................................................... 49
11 CONNECT DRAINAGE, WATER TRAP ............................................................................. 50

Assembly Instructions
Envistar Flex
Ver 2_en_2022-06-27
11.1 Connect water trap MIET-CL-04 (accessories) ........................................ 50
11.2 Connect water trap (site built) ................................................................... 50
12 DUCT CONNECTION, ACCESSORIES............................................................................. 51
12.1 Connect to ducts......................................................................................... 51
12.1.1 Connect to rectangular duct ......................................................................................51
12.1.2 Connect to circular duct ............................................................................................51
12.1.3 Connect sleeve (accessories) ....................................................................................51
12.2 Connect duct coils...................................................................................... 51
12.3 Connect sound attenuator (EMT-02) ......................................................... 51
12.4 Connect shut-off damper (EMT-01), and trim damper (ESET-TR)........... 51
13 AFTER ASSEMBLY ............................................................................................................ 52
13.1 Subsequent inspection and maintenance ................................................ 52
14 SUPPORT........................................................................................................................... 52

Page 6 (52) Ver 2_en_2022-06-27
Assembly Instructions
Envistar Flex
ivprodukt.docfactory.com
Order Portal
1 SAFETY
This section addresses important safety aspects of assembly, with the aim of raising safety
awareness and avoiding personal injuries and damage to surroundings and units.
00177
This manual contains important instructions. Read it carefully and follow
the instructions.
Pay special attention to warning and information messages, as well as
markings on the product.
Keep the manual for future use.
•
•
•
1.1 Intended use
Intended use
The product is intended to be used Air handling unit for comfort ventilation in properties.
Intended users
The contents of this manual are intended for personnel assembling the unit on site.
Intended user environment
• The unit is usually placed indoors, but is also available as an outdoor version.
• When installed indoors, the unit must be installed in a ventilated area that maintains a
temperature between +7 and +30 °C, and that maintains a moisture content of <3.5 g/kg in
dry air in the winter.
• The unit can also be equipped for assembly in cold attics.
Unintended use
Any use other than specified in Intended use is prohibited unless specifically permitted by IV
Produkt. It is not permitted to use the unit in potentially explosive environments.
1.2 General safety
Failure to comply with the safety precautions may result in injury to persons or damage to air
handling units. To avoid personal injuries and damage to surroundings or units:
• Follow national and local laws/regulations for safe work, e.g. fall protection when working
at a height.
• Do not wear loose clothing or jewellery that may get stuck.
• Do not step or climb on the unit.
• Use appropriate tools.
• Use appropriate personal protective equipment.
• Note the unit’s markings: product signs, information and warning stickers.
Personal protective equipment
Personal protective equipment must always be used based on the risks present in the work-
place. For example, wear protective shoes with steel toecaps, hearing protection, protective
helmet, gloves, safety glasses or goggles, fully-covering clothing, safety overalls, mouth-
guard/protective mask and/or fall protection where the work and work environment requires it.

Page 7 (52)
Ver 2_en_2022-06-27
Assembly Instructions
Envistar Flex
Warning notices
Warning notices in the instruction warn of risks when handling and assembling the product.
Carefully follow the instructions contained in warning notices.
The warning symbol indicates that a risk exists.
WARNING! indicates a potential risk that, if not avoided, can cause life-threatening or
serioussituations that can lead to death or personal injury.
CAUTION! indicates a potential risk that, if not avoided, could cause material damage
to the product or surroundings as well as impairment of product function.
“Risk of xxxxxx. “ indicates the risk in a short risk title.
A description in italics provides more detailed information about what the risk entails.
• The bullet points indicate how the user avoids harm.
General warning notices
00176
Electrical voltage can cause electric shock, burns and death. The product
must not be energised during assembly.
Electrical connection and electrical work may only be carried out by a
qualified electrician.
For initial start-up of the unit, see Operation and Maintenance of the unit
on IV Produkt's order portal.
•
•
Risk of life-threatening or serious personal injury.
WARNING!
00189
Art. Nr. 19194-0013
Follow the lifting and assembly instructions in this manual.
Use lifting equipment where available.
Use appropriate protective equipment.
Exercise caution when working between unit parts.
Exercise caution when placing unit parts on the support.
Use the support to secure the parts against possible tipping risk.
•
•
•
•
•
•
High unit parts, as well as unit parts with a high or oset centre of gravity,
mean a greater risk of tipping.
Risk of life-threatening or serious crushing or compression
injury.
WARNING!
00179
Follow the lifting and assembly instructions in this manual.
Use lifting equipment where available.
Use appropriate protective equipment.
•
•
•
The unit parts are often heavy and cannot be lifted by hand. See weights
indicated on the layout drawing.
Risk of life-threatening or serious crushing or compression
injury.
WARNING!

Page 8 (52) Ver 2_en_2022-06-27
Assembly Instructions
Envistar Flex
ivprodukt.docfactory.com
Order Portal
00180
Follow the instructions for lifting in this manual.
Never exceed the specified weight for the respective lifting method or
lifting equipment.
Slide stops must be fitted when lifting, if bracket is used.
Replace used T-bolts and nuts with new ones after each lift.
•
•
•
•
A falling unit when lifting can cause crushing injuries.
Risk of serious crushing injury.
WARNING!
00181
Use appropriate personal protective equipment when the work
requires it.
•
Sharp edges can cause cuts.
Risk of cutting.
WARNING!
Safety symbols, signs on the unit
Keep signs and stickers free of dirt. Replace missing, damaged or unreadable signs and
stickers on the machine. Contact IV Produkt for replacement stickers by specifying the article
number.
Type plate
The unit and any associated cooling unit/reversible heat pump have a type plate affixed to the
front. The type plate is used, among other things, for identification of the product.
00043
Ordernr / Order No / Tilaus nr / Nr zam / Auftragsnr.
Modell / Model / Malli / Model / Modell
Produktkod / Product code / Tuotekoodi / Kod produktu / Produktcode
Aggregatbeteckning / Project / Kohde / Agregat / Bezeichnung
Tillv.ort / Made in / Valmistettu / Produkcja / Herst.Ort
Tillv.m / Manuf.m. / Valmistus. k / Miesiav pr / Herst.Monat
XXXX-XXXX
Envistar
XXX-X-01-XX-XX-X-XX
XX-LAXX
VÄXJÖ, SWEDEN
YYMM
1
2
3
4
5
6
7
Figure: Example of a unit type plate
1. Order number
2. Product name/model
3. Product code
4. Unit designation
5. Place of manufacture
6. Date of manufacture
7. QR code
Report accidents, incidents
Accidents or incidents are reported to IV Produkt.
1.3 Product liability
The unit complies with industry requirements for quiet air handling units with high-efficiency
recovery systems for heating and cooling.
Declaration of conformity (CE marking)
The air handling unit and any associated cooling unit or reversible heat pump are CE marked
and meet the applicable requirements of the related directives under the declaration of
conformity. The declaration can be downloaded from IV Produkt’s order portal. See "1.1
Intended use”, page 6. The CE declaration applies only to the unit in the configuration in
which it was delivered and assembled according to this assembly instruction. The declaration
does not include components added later or modifications to the unit.

Page 9 (52)
Ver 2_en_2022-06-27
Assembly Instructions
Envistar Flex
Nor does the declaration apply to other plant in which the unit forms a part. The product may
not be put into service until the plant in which it is included complies with the requirements for
CE marking.
Manufacturer
The air handling unit is manufactured by:
IV Produkt AB, Sjöuddevägen 7, SE-350 43 VÄXJÖ
Warranty
For proper function and for the warranty to be valid, the assembly instructions must be
followed.
Extended warranty
Extended warranty is a supplement to the order and to claim extended warranty (5 years),
according to ABM07 with Appendix ABM-V07 or according to NL17 with Appendix VU20, a
complete documented and signed IV Produkt Service and Warranty book must be presented.
Disclaimer
Continuous product development may give rise to specification changes without notice.
1.4 Receive, unpack
Check the goods on arrival, to ensure that no damage has occurred during transport.
When delivered, the product is packaged with plastic to protect against rain and dirt. The
packaging should be kept on as long as possible to avoid penetration of dirt and dust into the
unit. Duct connections on outdoor units are protected with a sheet metal covering.
1.5 Storage, transport
For temporary storage, the product should be placed on a flat surface, in a dry environment.
The original packaging should be unbroken. Condensation water, which can occur during
storage in fluctuating temperatures, normally dries up when the unit is installed and in opera-
tion. For extended periods of storage outdoors, the packaging should be opened to ensure
ventilation inside the parts. The parts of the unit should be protected from rain, snow and
sunlight.
1.6 Lifting the unit, unit parts
Lifting should be carried out according to lifting instructions in this document, "4 LIFT THE
UNIT”, page 13 as well as according to markings and signs on the unit. If there are no lifting
instructions or markings, lifting must be carried out according to lifting methods prepared by
the transport industry.
1.7 After the lifetime of the product
For dismantling and decommissioning of air handling units, follow the instruction “Air handling
unit, dismantling and decommissioning” on IV Produkt’s order portal. See "1.1 Intended use”,
page 6.

Page 10 (52) Ver 2_en_2022-06-27
Assembly Instructions
Envistar Flex
ivprodukt.docfactory.com
Order Portal
2 GENERAL INFORMATION
This section contains general information that is not safety-related. For safety-related informa-
tion, see "1 SAFETY”, page 6.
2.1 IV Produkt’s order portal, support
All documentation associated with an order can be downloaded from
IV Produkt’s order portal. If possible, wait 2 weeks after delivery for full documentation. If
the order is not found, it may undergoing processing. If you have any questions, contact the
appropriate department for support. See contact details on the last page of the manual.
Enter ivproduct.docfactory.com in the browser or scan the QR code in the top left corner of
the manual.
1. Select “YOUR UNIT”.
2. Enter order number.
3. Click the magnifying glass.
General documentation that is not specific to order is retrieved under “ALL DOCUMENTA-
TION”.
2.2 Information messages, not safety-related
00182
Symbol together with information text highlights diculties and also gives
tips and recommendations.
2.3 Tools for assembly
A bag of screws, nuts, corner fittings and other items to be used for assembly is supplied with
each unit. The following tools are suitable for assembly:
• Power screwdriver with
16-socket, 13-socket,
1/4-inch bit and star bit
• Screwdriver
• Spirit level
• Putty syringe
• Rubber mallet
• Scissors
• Polygrip pliers
• Box spanners 13, 16, 18,
19
• Wooden blocks to lay
between support and
road
• Pop riveter
• Lubricating grease in
spray bottle
• Pipe cutter
2.4 Spare parts
Spare parts and accessories for this unit are ordered from IV Produkt's nearest sales
office. State the order number and unit designation. These can be found on a model iden-
tification label, affixed to each part/component. Download separate spare parts list on
IV Produkt’s order portal. See "1.1 Intended use”, page 6.

Page 11 (52)
Ver 2_en_2022-06-27
Assembly Instructions
Envistar Flex
2.5 Symbols on drawings and in manual
00113
Figure: Example of a layout drawing
Outdoor air Extract air
Supply air Exhaust air
Fan Filter
Shut-off damper Trim damper
H
O
2
Cooling coil water
H
O
2
Heating coil water
00209
Heating coil electric Sound attenuator
Rotary heat exchanger Cross-flow heat exchanger
Counter-flow heat exchanger Compressor
Cooling unit DX
DX
Reversible heat pump
Media section Quick connector

Page 12 (52) Ver 2_en_2022-06-27
Assembly Instructions
Envistar Flex
ivprodukt.docfactory.com
Order Portal
3 DESCRIPTION OF THE UNIT
3.1 Configuration of the unit
The unit can be supplied with or without control and adjustment equipment. See "10
CONNECT CONTROL EQUIPMENT”, page 47.
The unit is supplied as a complete unit (unit version) or in blocks/parts (block version) in sizes
060—1540. Units in block version require assembly.
Indoor units are mounted on supports (aluminium profiles) with legs and adjustable feet,
adjustable to different heights.
The framework of the units consists of aluminium profiles:
• Size 060-980: 50 x 50 mm (50 profile)
• Size 1080-1540: 60 x 60 mm (60 profile).
Outdoor units are pre-mounted on beam frames (aluminium profiles) with a fixed height of 100
mm (for 50 profile) or 160 mm (for 60 profile) and cannot be supplemented with legs or adjus-
table feet.
Unit parts that have pre-assembled supports have lifting lugs mounted under the cross beams
of the support.
Unit parts can be delivered in sections or divisible, known as sectioned configuration, to
simplify moving them in through confined spaces.
3.2 Orientation of the unit’s sides/parts
00050
1
4
3
5
2
Figure: Parts of the unit
1. Inspection side
2. Back
3. Gable side
4. Joints
5. Covers

Page 13 (52)
Ver 2_en_2022-06-27
Assembly Instructions
Envistar Flex
4 LIFT THE UNIT
00189
Art. Nr. 19194-0013
Follow the lifting and assembly instructions in this manual.
Use lifting equipment where available.
Use appropriate protective equipment.
Exercise caution when working between unit parts.
Exercise caution when placing unit parts on the support.
Use the support to secure the parts against possible tipping risk.
•
•
•
•
•
•
High unit parts, as well as unit parts with a high or oset centre of gravity,
mean a greater risk of tipping.
Risk of life-threatening or serious crushing or compression
injury.
WARNING!
00179
Follow the lifting and assembly instructions in this manual.
Use lifting equipment where available.
Use appropriate protective equipment.
•
•
•
The unit parts are often heavy and cannot be lifted by hand. See weights
indicated on the layout drawing.
Risk of life-threatening or serious crushing or compression
injury.
WARNING!
00180
Follow the instructions for lifting in this manual.
Never exceed the specified weight for the respective lifting method or
lifting equipment.
Slide stops must be fitted when lifting, if bracket is used.
Replace used T-bolts and nuts with new ones after each lift.
•
•
•
•
A falling unit when lifting can cause crushing injuries.
Risk of serious crushing injury.
WARNING!
00186
Use spreader bars when lifting with bracket.
Follow instructions for working with spreader bars.
•
•
Chains/straps that are lying against the unit when lifting may damage the unit.
Risk of damage to the product
CAUTION!

Page 14 (52) Ver 2_en_2022-06-27
Assembly Instructions
Envistar Flex
ivprodukt.docfactory.com
Order Portal
4.1 Lifting with forklift
When lifting with a forklift, the forks must be as long as the unit packaging
or longer.
00053
1
2
Figure: Lifting with forklift
1. Lift fork length 2. Unit packaging
4.2 Lifting brackets, pre-mounted lifting lugs, spreader bar
• The maximum angle at the lift hook is 80º
• The inclination slope of unit parts when lifting is 15º. If the inclination is
greater than 15º, the chains/straps must be shortened or extended until
the angle is less than 15º.
• The spreader bar must be 100—400 mm wider than the unit.
00095
max 15°
max 80°
max 80°
max 15°
max 15°
max 80°
1234
Figure: Illustration of lift with spreader bar and inclination
1. Lift with EMMT-08 with spreader bar
2. Lift with EMMT-12 with spreader bar
3. Lift in base frame with spreader bar
4. Incorrectly mounted lifting brackets in the centre
profile
4.3 Lift of double stacked parts (parts on top of each
other)
• Total weight ≤ 1600 kg - lifted with lifting brackets EMMT-12, mounted at the bottom of the
lower part.
• Total weight > 1600 kg - lifted with pre-mounted lifting lugs. See "4.6 Lifting of unit
pre-mounted on support”, page 17.

Page 15 (52)
Ver 2_en_2022-06-27
Assembly Instructions
Envistar Flex
4.4 Lift with bracket EMMT-08, for 50 profile
00180
Follow the instructions for lifting in this manual.
Never exceed the specified weight for the respective lifting method or
lifting equipment.
Slide stops must be fitted when lifting, if bracket is used.
Replace used T-bolts and nuts with new ones after each lift.
•
•
•
•
A falling unit when lifting can cause crushing injuries.
Risk of serious crushing injury.
WARNING!
• The bracket does not fit the 60 profile.
• Load per lifting bracket ≤ 400 kg.
• Load if all four brackets are used ≤ 1600 kg.
• A safety factor of 1.6 has been utilised in static testing of the lifting
bracket.
• Use shackle with safety factor 6:1.
• Brackets must not be mounted downwards or sideways.
• Lifting brackets must not be mounted in the middle profile of double
stacked parts.
00097
1
5
3
2
4
6
Figure: Lifting bracket EMMT-08
1. Lifting bracket EMMT-08
2. Lifting lug
3. Lift stop sticker
4. Wing nut
5. Slide stop sticker
6. Slide stop
EMMT-08 is delivered in a set of four.
1. Place the lifting brackets in the bottom four corners of the unit or unit part (on the longest
sides of the part), with the lifting lug upwards.
2. Push the brackets into the horizontal track in the unit’s aluminium profile.
3. Push the slide stop into the vertical track in the unit’s aluminium profile.
4. Lock by tightening the wing nut.

Page 16 (52) Ver 2_en_2022-06-27
Assembly Instructions
Envistar Flex
ivprodukt.docfactory.com
Order Portal
4.5 Lift with bracket EMMT-12, for 60 profile
00180
Follow the instructions for lifting in this manual.
Never exceed the specified weight for the respective lifting method or
lifting equipment.
Slide stops must be fitted when lifting, if bracket is used.
Replace used T-bolts and nuts with new ones after each lift.
•
•
•
•
A falling unit when lifting can cause crushing injuries.
Risk of serious crushing injury.
WARNING!
• The bracket does not fit the 50 profile.
• Load per lifting bracket ≤ 500 kg.
• Load if all four brackets are used ≤ 2000 kg.
• A safety factor of 2.0 has been utilised in static testing of the lifting
bracket.
• Use shackle with safety factor 6:1.
• Brackets must not be mounted downwards or sideways.
• Lifting brackets must not be mounted in the middle profile of double
stacked parts.
• Lift only one part at a time.
00098
1
3
2
Figure: Lifting bracket EMMT-12
1. Lifting bracket EMMT-12
2. Lifting lug
3. Fixing holes
EMMT-12 is delivered in a set of four.
1. Place the lifting brackets over the top four corners of the unit or unit part (on the longest
sides of the part), with the lifting lug upwards.
2. Insert the supplied T-bolts (MB 8×19 FZB 8.8), through the bracket and into the track in
the aluminium profile.
3. Turn the T-bolts, with a tightening torque of 24 Nm, so that they are at 90º to the profile
track and are firmly fixed under the edges of the track.

Page 17 (52)
Ver 2_en_2022-06-27
Assembly Instructions
Envistar Flex
4.6 Lifting of unit pre-mounted on support
00191
Follow the instructions for lifting in this manual.
Never exceed the specified weight for the respective lifting method or
lifting equipment.
Never remove or move the factory-fitted lugs.
The lifting straps must always be pulled through the lugs to prevent the
lifting straps from slipping away under the unit.
•
•
•
•
A falling unit when lifting can cause crushing injuries.
Risk of serious crushing injury.
WARNING!
1. Pull the straps under the unit/parts. Make sure the straps go through the lugs.
2. Lift with suitable lifting equipment.
00099
1
Figure: Lifting lug on support
1. Lugs for straps (four)

Page 18 (52) Ver 2_en_2022-06-27
Assembly Instructions
Envistar Flex
ivprodukt.docfactory.com
Order Portal
4.7 Lifting of unit pre-mounted on base frame
00192
Follow the instructions for lifting in this manual.
Never exceed the specified weight for the respective lifting method or
lifting equipment.
Never remove or move the factory-fitted lifting lugs.
Use shackle with safety factor 6:1.
Lifting straps must not be pulled through the lifting lugs.
•
•
•
•
•
A falling unit when lifting can cause crushing injuries.
Risk of serious crushing injury.
WARNING!
Aluminium beam H=100mm:
• Maximum load=750 kg/lifting lug. Total load=3000kg (all four lifting lugs).
Aluminium beam H=160mm:
• Maximum load=1350kg/lifting lug. Total load=5400kg (all four lifting lugs).
1. Fit a shackle in each of the pre-mounted lifting lugs.
2. Pull straps through each shackle.
3. Lift with suitable lifting equipment.
00100
1
Figure: Lifting loop pre-mounted on base frame
1. Lifting lug with shackle (four)

Page 19 (52)
Ver 2_en_2022-06-27
Assembly Instructions
Envistar Flex
4.8 Lifting thermal wheel (1250-D1, 1540-D1) from truck
00192
Follow the instructions for lifting in this manual.
Never exceed the specified weight for the respective lifting method or
lifting equipment.
Never remove or move the factory-fitted lifting lugs.
Use shackle with safety factor 6:1.
Lifting straps must not be pulled through the lifting lugs.
•
•
•
•
•
A falling unit when lifting can cause crushing injuries.
Risk of serious crushing injury.
WARNING!
Lifting brackets are placed on different points on the thermal wheel depending on the kind of
lift to be done.
00096
2
13
Figure: Lifting of thermal wheel from truck
1. Brackets when lifting from truck
2. Brackets to straighten the thermal wheel to stan-
ding
3. Brackets for lifting the thermal wheel to the unit

Page 20 (52) Ver 2_en_2022-06-27
Assembly Instructions
Envistar Flex
ivprodukt.docfactory.com
Order Portal
5 PREPARE ASSEMBLY
When setting up the unit, it shall be horizontal at the longitudinal leading
edge, as well as slightly inclined forward (towards the inspection side) to
create proper drainage of condensation water.
Inlet grilles and duct systems shall be designed and installed so that:
• water is prevented from penetrating into the unit.
• recirculation and short-circuiting between the exhaust air and outdoor air is prevented.
• drainage cannot run backwards to the unit.
The duct system shall be designed and the control system configured to prevent pressure
increase through filter/air ducts, for example by soft-starting fans and opening dampers when
fans are operating. See "12 DUCT CONNECTION, ACCESSORIES”, page 50.
Water trap is mounted as indicated. Se "11 CONNECT DRAINAGE, WATER TRAP”, page
49.
5.1 Sectioned configuration (Easy Access)
Unit parts delivered in block form must be assembled before they are put into place on the
support. Follow the directions in "6 ASSEMBLY, GENERAL”, page 22 and "7 ASSEMBLY,
SECTIONED CONFIGURATION”, page 30.
5.2 Create service area, electrical safe distance
• The service area in front of the unit should be about 1.5 x the depth of
the unit so as to allow for service, replacement of parts and cleaning.
• Follow the National Electrical Safety Board's recommendations regar-
ding the free service space to be located in front of electrical connecting
equipment.
00048
1
23
4
Figure: Service area on the inspection side
1. Service area
2. Service area width (width of the unit)
3. Service area depth (1.5 x depth of the unit)
4. Depth of the unit