IV Produkt Envistar Top Series User manual

Translation of the original instructions
Operation and Maintenance
Envistar Top
Order number:
Project:

Size
04 06 09  10
12 16  21
Control equipment
MX
UC
MK
US
HS
Filter supply air
ePM10-60% / M5
ePM1-50% / F7
ePM1-60% / F7
Excl. filter
Filter extract air
ePM10-60% / M5
ePM1-50% / F7
ePM1-60% / F7
Excl. filter
Unit type
TEM
TXM
TER
TXR
TEC-R 1V 2V
TEC-M
TTC
Home Concept model
Unit parts and accessories
Rotary heat exchanger TXRR
Counter-flow exchanger TXMM
Air heater water ETAB-VV
Output var 1 2 3
ThermoGuard ETAB-TV
Output var 1 2
Air heater electric ETAB-EV
Output var 1 2 3
Air heater electric ETKB-EV
Output var 1 2 3 4
Air heater electric ETAB-SV
Air cooler water ETKB-VK
Damper ETSP-UM, ETSP-TR, ETRL
Sound attenuator ETLD
Unit specifications

Table of Contents
1 Safety precautions
1.1 Personal protective equipment ........................................................................................................ 1
1.2 Prevent injury to personal and damage to air handling units .................................... 1
1.3 Product signs, information and warning stickers ............................................................... 2
1.4 Safety message .......................................................................................................................................... 2
1.5 General safety messages .................................................................................................................... 3
2 General
2.1 Intended use ................................................................................................................................................. 6
2.2 Manufacturer ................................................................................................................................................. 6
2.3 Designations ................................................................................................................................................. 6
2.4 CE marking and EU Declaration of Conformity ................................................................... 7
2.5 Maintenance .................................................................................................................................................. 7
2.6 Handling of refrigerant ........................................................................................................................... 8
2.7 Extended warranty .................................................................................................................................... 9
2.8 Spare parts ..................................................................................................................................................... 9
2.9 Dismantling and decommissioning .............................................................................................. 9
3 Technical description
3.1 Envistar Top air handling unit ......................................................................................................... 10
3.2 Home Concept model ......................................................................................................................... 10
3.3 Cooling unit (TEC-R, TEC-M) ......................................................................................................... 11
3.4 Reversible heat pump ThermoCooler HP (code TTC) ................................................. 15
4 Wiring instructions and fuse protection
4.1 MX - Complete control equipment ........................................................................................... 19
Complete electrical connection to terminal without controller unit ............................... 19
4.2 MK – Fans and heat exchangers electrically connected to terminal ............... 20
4.3 HS, US - Without control and without electrical connection .................................. 20

Table of Contents, cnt’d
5 Operation
5.1 Hygiene inspection ................................................................................................................................ 22
5.2 Actions in case of standstill ............................................................................................................ 22
5.3 Commissioning ........................................................................................................................................ 23
5.4 Cooling Status – Cooling unit (code TEC-R, TEC-M), size 04 ............................... 24
5.5 Status Cooling - cooling unit (code TEC-R) size 06-12,
(code TEC-M) size 6, 10) ................................................................................................................... 27
5.6 Cooling Status – Cooling unit, size (code TEC) size 16-21 ...................................... 29
5.7 Cooling Status - reversible heat pump (code TTC) ........................................................ 31
6 Maintenance instructions
6.1 Service schedule ..................................................................................................................................... 33
6.2 Filters (code ELEF) ................................................................................................................................. 35
6.3 Rotary heat exchanger (code TXRR) ........................................................................................ 38
6.4 Cleaning ........................................................................................................................................................ 42
6.5 Counter-flow exchanger (code TXMM) ................................................................................. 43
6.6 Air heater water (code ETAB-VV) and Thermoguard (ETAB-TV) ............................ 46
6.7 Air Heater electric (Code ETAB-EV, ETKB-EV, ETAB-SV) .......................................... 48
6.8 Air cooler water (code ETKB-VK) ................................................................................................ 50
6.9 Fan unit (code ELFF) ............................................................................................................................ 52
6.10 Damper (code ETSP-UM, ETSP-TR, ETRL) ....................................................................... 57
6.11 Sound attenuator (code ETLD) .................................................................................................... 59
6.12 Cooling unit (code TEC-R, TEC-M) and reversible heat pump (code TTC) 60
7 Alarm management and troubleshooting
7.1 Cooling unit (TEC-R, TEC-M) size 06-10, (TEC-M) size 06-10 .............................. 61
7.2 Cooling unit (code TEC-R) size 06-12, (code TEC-M) size 06, 10 ...................... 63
7.3 Reversible heat pump (code TTC) .............................................................................................. 67

Page 1
Operation and Maintenance
Envistar Top 04-21
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Continuous product development may give rise to specification changes without notice.
1 Safety precautions
Follow all safety precautions in this document and pay attention to all warning
signs on the air handling unit.
Failure to comply with the safety precautions may result in injury to persons or
damage to air handling units.
1.1 Personal protective equipment
Personal protective equipment must always be used based on the risks present
at the workplace. Comply with national and local laws and regulations.
The following personal protective equipment is recommended where the work
requires:
• Protective shoes with steel cap
• Hearing protectors
• Safety helmet
• Gloves
• Goggles
• Covering clothing
• Protective overalls
• Mouthguard/protective mask
• Fall protection
1.2 Prevent injury to personal and damage to air handling units
To avoid injury to persons or damage to air handling units, pay attention to the
following:
• Read the entire document before working on the unit.
• Comply with national and local laws and regulations for work safety.
• Do not wear loose clothing or jewellery that may get fasten.
• Do not step or climb on the unit.
• Use recommended tools and equipment intended for the job.
• Use recommended personal protective equipment when the work requires it.
• Observe the unit's product signs, information and warning stickers.
• Keep the unit clean and follow the Operation and Maintenance Instructions.
• Make sure that all covers are in place, that inspection covers are closed and
that lockable inspection covers are locked before starting the unit and after
repairs/service.
• Use appropriate fall protection when working at heights - normally over 2
meters. Even work at lower heights may require protective measures.

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Operation and Maintenance
Envistar Top 04-21
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1.3 Product signs, information and warning stickers
Keep signs and stickers free from soiling and replace them if they are lost,
damaged or illegible. Contact IV Produkt for replacement stickers; specify the
item number.
1.4 Safety message
The following warning symbols and signal words are used in this document to
inform of risks.
WARNING!
Indicates an imminent or potential dangerous situation
which, if not avoided, can result in death or serious injury.
BE CAREFUL!
Indicates a potentially hazardous situation which, if not
avoided, may result in damage or impaired function of the
air handling unit.

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Operation and Maintenance
Envistar Top 04-21
DSET.220501.07.en
Continuous product development may give rise to specification changes without notice.
1.5 General safety messages
Comply with the following general safety messages.
Lockable safety switch
WARNING!
Risk of serious injury.
Electrical power can cause electric shock, burns and death.
Working on/servicing the unit –Shut down the unit via the
service switch in the control equipment, then turn the safety
switch to the 0 position and lock it.
There may be several safety switches serving the different
parts of the unit. All safety switches must be switched off
and locked before repairs/service.
BE CAREFUL!
The safety switch is not designed for starting/stopping the
unit. Always use the service switch in the control equipment
to start and shut down the unit.
Electrical connections
WARNING!
Risk of serious injury.
Electrical power can cause electric shock, burns and death.
Working on/servicing the unit –Shut down the unit via the
service switch in the control equipment, then turn the safety
switch to the 0 position and lock it.
There may be several safety switches serving the different
parts of the unit. All safety switches must be switched off
and locked before repairs/service.
WARNING!
Risk of personal injury.
Rotating fan impellers can cause crushing injuries or
lacerations.
The unit must not be energised until all ducts have been
connected.
BE CAREFUL!
Wiring of connections and other electrical work may only be
carried out by a qualified electrician or by service personnel
recommended by IV Produkt.

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Operation and Maintenance
Envistar Top 04-21
DSET.220501.07.en
Continuous product development may give rise to specification changes without notice.
Inspection hatches
WARNING!
Risk of personal injury.
Overpressure in unit.
Allow the pressure to drop before you open the inspection
doors.
WARNING!
Risk of personal injury.
The doors in front of moving parts shall normally be locked;
there are no contact guards.
During repairs/service, the inspection doors are locked with
the supplied keys.
Make sure that all doors are in place, that inspection doors
are closed and that lockable inspection doors are locked
before starting the unit and after repairs/service.
Cooling unit/Reversible heat pump
WARNING!
Risk of personal injury.
Hot surfaces can cause burns.
Working on/servicing the unit –Shut down the unit via the
service switch in the control equipment, then turn the safety
switch to the 0 position and lock it.
There may be several safety switches serving the different
parts of the unit. All safety switches must be switched off
and locked before repairs/service.
Wait at least 30 minutes before opening the compressor
inspection hatches.
Heating coil
WARNING!
Risk of personal injury.
Hot surfaces can cause burns.
Working on/servicing the unit –Shut down the unit via the
service switch in the control equipment, then turn the safety
switch to the 0 position and lock it.
There may be several safety switches serving the different
parts of the unit. All safety switches must be switched off
and locked before repairs/service.
Wait at least 5 minutes before opening the battery
inspection hatches.

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Operation and Maintenance
Envistar Top 04-21
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Continuous product development may give rise to specification changes without notice.
Fan
WARNING!
Risk of personal injury.
Rotating fan impellers can cause crushing injuries or
lacerations.
Working on/servicing the unit –Shut down the unit via the
service switch in the control equipment, then turn the safety
switch to the 0 position and lock it.
There may be several safety switches serving the different
parts of the unit. All safety switches must be switched off
and locked before repairs/service.
Wait at least 3 minutes before opening inspection hatches.
Rotary heat exchanger
WARNING!
Risk of personal injury.
Rotating thermal wheels can cause crushing injuries or
lacerations.
Working on/servicing the unit –Shut down the unit via the
service switch in the control equipment, then turn the safety
switch to the 0 position and lock it.
There may be several safety switches serving the different
parts of the unit. All safety switches must be switched off
and locked before repairs/service.
Wait at least 3 minutes before opening inspection hatches.
Damper
WARNING!
Risk of personal injury.
Moving parts can cause crushing injuries. Never place your
hands inside the damper when it closes.
Working on/servicing the unit –Shut down the unit via the
service switch in the control equipment, then turn the safety
switch to the 0 position and lock it.
There may be several safety switches serving the different
parts of the unit. All safety switches must be switched off
and locked before repairs/service.
Some dampers are closed via spring return in a
de-energized state.
Wait at least 3 minutes for the damper to close.
Filter
WARNING!
Risk of personal injury – harmful dust.
Use a face mask/respiratory protection to avoid inhaling
dust.

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Operation and Maintenance
Envistar Top 04-21
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Continuous product development may give rise to specification changes without notice.
2 General
2.1 Intended use
The air handling units in the Envistar Top series are intended for comfort ventila-
tion in buildings.
When installed indoors, the unit must be installed in an area that maintains a
temperature between +7 and +30°C, and with a moisture content of <3.5 g/kg in
dry air in the winter. The unit can also be equipped for outdoor installation.
Any other use and installation in other environments are prohibited unless speci-
fically permitted by IV Produkt AB.
It is not permitted to use the unit in potentially explosive environments, Eex.
2.2 Manufacturer
The Envistar air handling units (AHUs) are manufactured by:
IVProdukt AB
Sjöuddevägen 7
SE-350 43 VÄXJÖ
2.3 Designations
The unit and cooling unit/reversible heat pump (if selected) have a model type
plate affixed to the front.
The model type plate shows the series number and the requisite designations to
identify the unit.
00012
Art.nr. 19121-1001
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
1234-56789
ENVISTAR TOP
XXX-R-04-AA-2V-V-00
LA01
VÄXJÖ, SWEDEN
YYMM
Typical model identification label

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Operation and Maintenance
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Continuous product development may give rise to specification changes without notice.
2.4 CE marking and EU Declaration of Conformity
The air handling units and cooling unit or reversible heat pump (if selected) are
CE marked, which means that upon delivery they conform to applicable provi-
sions in EU Machinery Directive 2006/42/EC as well as to other EU Directives
applicable to the types of air handling units, e.g. Pressure Equipment Directive
PED 2014/68/EU.
As certification confirming that the requirements have been met, we pro-
vide an EU Declaration of Conformity, which is available under Documenta-
tion at ivprodukt.docfactory.com, or under Order Unique Documentation at
docs.ivprodukt.com.
0
1
Art. Nr. 19194-0001_01
12 3
180
s
Typical CE label for air handling units
00018
0409
Cooling unit
Order number
Code Key
Model
Name of project
Date of manufacture
PS Max allowable pressure
PT Test pressure
TS Temperature range
Protection level - low
Protection level - high
Refrigerant / Fluid group
GWP
Refrigerant charge Circuit 1
Refrigerant charge Circuit 2
Refrigerant charge Circuit 3
IV Produkt AB
VÄXJÖ, SWEDEN
Contains fluorinated greenhouse gases
covered by the Kyotot protocol.
Typical CE label for cooling units
For units without integrated control equipment
The EC declaration applies only to units in the condition in which they have been
delivered and installed at the facility in accordance with the enclosed installation
instructions. The declaration does not include components that were subse-
quently added or measures subsequently taken on the unit.
2.5 Maintenance
The ongoing maintenance of this unit can be carried out either by the person
normally in charge of maintaining the building or through a contract with a well-
reputed service company.

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Operation and Maintenance
Envistar Top 04-21
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Continuous product development may give rise to specification changes without notice.
2.6 Handling of refrigerant
The following information summarises the requirements and guidelines for hand-
ling the refrigerant used in cooling units. For further information, see the F-gas
Regulation (EU/517/2014 on fluorinated greenhouse gases) and the Swedish
Refrigerant Regulation (SFS 2016:1128). The purpose of the regulations is to
contribute to achieving EU goals for reduced climate impact in accordance with
the Kyoto Protocol.
Operator responsibilities
By operator, we refer to the European Parliament’s definition: “...the natural or
legal person exercising actual power over the technical functioning of the equip-
ment and systems...”.
Generally speaking, the unit operator must:
• Minimise and prevent leakage
• Take corrective action to remedy any leakage that arises
• Ensure that leak inspection, service and repair of the refrigerant circuit are
carried out by a certified refrigeration technician
• Ensure that refrigerant is handled in an environmentally secure manner and in
accordance with national regulations.
The levels for the various actions to be taken for a system are calculated using
carbon dioxide equivalents, CO2e (tonnes). This figure is calculated by multiply-
ing the refrigerant’s GWP value (Global Warming Potential) by the filling amount
in kilos. GWP for R410a is 2088. A filling amount of 1.1 kg R410A therefore cor-
responds to (1.1×2088)/1000 = 2.30 CO2e(tonnes).
The unit is marked with refrigerant quantity and carbon dioxide equivalent.
Envistar Top with cooling unit (TEC-R, TEC-M)
Size Refrigerant Refrigerant volume CO2e (tonnes)
04 R410A 1.1 kg 2.30
06 R410A 1.6 kg 3.34
09 R410A 1.9 kg 3.97
10 R410A 1.9 kg 3.97
12 R410A 2.38 kg 4.97
16 R134a 5.0 kg 7.15
21 R134a 5.2 kg 7.44
Envistar Top with reversible heat pump (TTC)
Size Refrigerant Refrigerant volume CO2e (tonnes)
06 R410A 1.75 kg 3.65
09 R410A 2.8 kg 5.85
10 R410A 2.7 kg 5.64
12 R410A 4.1 kg 8.56
16 R410A 4.9 kg 10.23
21 R410A 6.68 kg 13.95

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Operation and Maintenance
Envistar Top 04-21
DSET.220501.07.en
Continuous product development may give rise to specification changes without notice.
Leakage inspection and registration
For Envistar Top with cooling unit (TEC-R) size 16-21 and reversible heat pump
(code TTC) size 16-21 the following applies:
• Leakage inspections must be carried out by a certified refrigeration techni-
cian:
– On installation/commissioning
– Periodically at least once every 12 months, i.e. there can be no more than
12 months between inspections
– Within one month after any work is performed (e.g. sealing a leak, repla-
cing a component).
• The operator must record events, such as the volume and type of refrigerant
topped up, refrigerant taken into possession, results of inspections and work
done, person and company who carried out service and maintenance.
Envistar Top with cooling unit (code TEC-R, TEC-M) size 04-12 and reversible
heat pump (code TTC) size 06 is not subject to registering or leakage inspection
requirements.
2.7 Extended warranty
In cases in which the equipment delivered is covered by a 5-year warranty, in
accordance with ABM 07 with appendix ABM-V 07 or in accordance with NL 17
with appendix VU20, the IV Produkt Service and Warranty Manual is supplied
with the product.
In order to claim an extended warranty, a complete, documented and signed IV
Produkt Service and Warranty Manual must be presented.
2.8 Spare parts
Spare parts and accessories for this unit can be ordered from IV Produkt's
nearest dealership. When ordering, the order number and designation must be
given. These are stated on a model identification label, affixed to each functional
section. There is a separate spare parts list for the unit, refer to Order Unique
Documentation at docs.ivprodukt.com.
2.9 Dismantling and decommissioning
When an air handling unit is to be dismantled, separate instructions must be fol-
lowed, see Dismantling and decommissioning the AHU under Documentation at
ivprodukt.docfactory.com.

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Operation and Maintenance
Envistar Top 04-21
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Continuous product development may give rise to specification changes without notice.
3 Technical description
3.1 Envistar Top air handling unit
Envistar Top with counter-flow exchanger (code TEM)
Envistar Top with rotary heat exchanger (code TER)
Envistar Top is manufactured as a compact unit or modularly, depending on the
size and version selected.
The compact unit is supplied complete preassembled from the factory. Modular
units are supplied in parts to facilitate transport and entry and are assembled on
site
The unit is available in different sizes and in right-hand or left-hand versions. All
units have duct connections in the top (up). The units are equipped with either a
counter-flow exchanger (code TEM/TXM) or rotary heat exchanger (code TER/
TXR).
The units can be supplied with or without integrated control equipment.
Envistar Top (code TEM, TXM, TER, TXR) and Envistar Top with integrated Eco-
Cooler (code TEC-R, TEC-M) cooling unit or reversible heat pump ThermoCooler
HP (code TTC) are factory built units that are tested and documented in the fac-
tory.
3.2 Home Concept model
Units with a rotary heat exchanger or counter-flow exchanger in the
Home Concept versions have, among other things, specialised control
equipment such as automatic defrosting. Units with rotary heat exchangers are
also equipped with a pressure balance function for optimal rotor operation.

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Operation and Maintenance
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3.3 Cooling unit (TEC-R, TEC-M)
Envistar Top with EcoCooler (TEC-R and TEC-M) size 10
The integrated cooling unit with EcoCooler (code TEC-R, TEC-M) cooling
recovery is available as an optional extra to an Envistar Top unit with a rotary
heat exchanger or counter-flow heat exchanger. Cooling recovery means that
the heat exchanger starts up when the extract air/room temperature drops below
the outdoor temperature and cooling is required.
The unit has an electronic expansion valve, rotary compressor size 04, scroll
compressor size 06-12 and reciprocating compressor size 16-21.
Compressor
Power control takes place with a speed-controlled compressor. When
increased cooling is required, the frequency inverter increases the speed of the
compressor.
Compressor protection
In the event of an alarm initiated by the frequency inverter or the safety circuit,
the compressor stops and an alarm indication is given. If the unit is equipped
with control equipment, the alarm can be read on the Climatix display.
In the event of an alarm, correct the fault and then reset the alarm. If the safety
circuit alarm trips repeatedly, an authorised refrigeration service company must
be called in.
For size 04-12
The safety circuit consists of a high pressure switch (HP), which protects by trip-
ping when there is high pressure in the system. Use the manual reset button on
the pressure switch to perform a reset.
For size 16-21
The safety circuit consists of a low pressure control and a high pressure switch
with a manual reset button. The safety circuit can trip for two different faults:
• High pressure in the system, HP (manual reset on the pressure switch)
• Low pressure in the system, LP (resets itself automatically)

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Operation and Maintenance
Envistar Top 04-21
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Continuous product development may give rise to specification changes without notice.
Cooling function
For integrated control equipment (MX), the cooling unit is interlocked across
the ventilation unit. If any of the fans stop, the cooling unit will also stop. The
interlock and demand signal is sent via Modbus.
For external control equipment (US, UC, MK), the interlock signal must be sent
via a potential-free relay. The demand signal must be sent via 0–10 V.
The cooling unit has internal communication between the frequency inverter and
the expansion valve’s control equipment. Communication takes place through
the Modbus protocol.
Circuit board
The circuit board in the cooling unit is internally prewired and tested at the fac-
tory.
The circuit board contains:
Size 04:
Control centre with integrated expansion valve controller
Size 06 -12:
• Compressor inverter
• Expansion valve controller
• Contactor
Size 16-21:
• Main switch
• Fuse
• Control unit
• Control unit for expansion valve

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Operation and Maintenance
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Continuous product development may give rise to specification changes without notice.
Cooling circuit function
A cooling system has four basic components: evaporator, condenser, expansion
valve and compressor.
The compressor carries out the work required to run the cooling process. The
evaporator is located in the supply air for the unit. The heat from the outdoor air
is taken up in this coil, thereby cooling the supply air.
The energy supplied to the cooling system from the evaporator and the com-
pressor leaves the unit via the condenser in the extract air.
It is important to ensure that the air volumes are above the specified minimum
flow on both the outdoor air and extract air side. The process cannot work if
these air volumes are not available.
00024
15
13
14
10
411
2
12
5
6
1
9
7
8
3
Flow chart for refrigerant system size 04-12
1 Compressor
2 Hot gas sensor
3 Condenser
4 Extract air fan
5 High-pressure switch
6 Pressure sensor - high pressure
7 Measurement outlet – high pressure
8 Drying filter
9 Expansion valve
10 Evaporator
11 Supply air fan
12 Measurement outlets – low pressure
13 Control unit
14 Suction gas sensor (temp after evaporator)
15 Pressure sensor – low pressure

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00023
14
12
13
8
39
11
10
4
1
7
5
6
2
Flow chart for refrigerant system size 16-21
1 Compressor
2 Condenser
3 Extract air fan
4 High-pressure switch
5 Measurement outlet – high pressure
6 Drying filter
7 Expansion valve
8 Evaporator
9 Supply air fan
10 Measurement outlets – low pressure
11 Low pressure control
12 Control unit
13 Suction gas sensor (temp after evaporator)
14 Pressure sensor – low pressure

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Operation and Maintenance
Envistar Top 04-21
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Continuous product development may give rise to specification changes without notice.
3.4 Reversible heat pump ThermoCooler HP (code TTC)
Envistar Top with ThermoCooler HP (code TTC) size 10
Envistar Top with ThermoCooler HP (code TTC) Size 12
The integrated reversible heat pump ThermoCooler HP (code TTC) is available
as an optional extra to an Envistar Top unit with a rotary heat exchanger.
The unit has an electronic expansion valve and scroll compressor.
The units are intended to be used to cool or heat supply air in properties.

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Operation and Maintenance
Envistar Top 04-21
DSET.220501.07.en
Continuous product development may give rise to specification changes without notice.
Cooling circuit function
The reversible heat pump has four basic components: evaporator, condenser,
expansion valve and compressor.
A 4-way valve is used to shift between cooling and heating.
For cooling, the 4-way valve is in cooling mode. For heating, the 4-way valve
is in heating mode. This means that the coil, which was a condenser in cooling
mode, becomes an evaporator in heating mode. Conversely, the evaporator
becomes a condenser.
00035
8
3
9
11
13
14
10
16
18 19
17
41
5
6
2
12
15
7
Flowchart for cooling mode, reversible heat pump
1 Compressor
2 Suction gas sensor (temp after evaporator)
3 Pressure sensor, low pressure
4 Expansion valve
5 Frequency inverter
6 4-way valve
7 High pressure switch
8 Pressure sensor, high pressure
9 Temperature sensor, hot gas
10 Temperature sensor liquid line cooling
11 Temperature sensor liquid line heating
12 Temperature sensor sump
13 Extract air coil (condenser/evaporator)
14 Supply air coil (condenser/evaporator)
15 Suction gas separator
16 Exhaust air
17 Extract air
18 Outdoor air
19 Supply air