IV Produkt Envistar Compact Series User manual

Operation and maintenance
Translation of the original instructions
Order number :
Project :
Air Handling Unit
Envistar Compact and Home Concept FTX Compact 04-16
Envistar®Compact

Unit specifications
Size
04 
06 
10 
16 
Filter, supply air
ePM10-65% (M5) 
ePM1-50% (F7) 
Black Ridge BR 
Excl. filter 
Filter, extract air
ePM10-65% (M5) 
ePM1-50% (F7) 
Aluminium filter AL 
Excl. filter 
Unit type
ACER 
ACEC Output var. 1  2  3 
Home Concept model 
Control equipment
MX 
UC 
MK 
US 
Unit parts and accessories
Recovery rotor ACRR 
Air heater water
ECET-VV ECET-TV 
Air heater electric ECET-EV
Output var. 1  2  3 
Air cooler water
ECET-VK  ECET-DX 
Damper ECET-UM, ECET-TR 
Sound attenuator ECET-LD 

1 Safety precautions ................................................................................................................................ 2
1.1 Lockable safety switch .............................................................................................................. 2
1.2 Inspection doors ............................................................................................................................ 2
1.3 Electrical connection ................................................................................................................... 2
1.4 Cooling unit ........................................................................................................................................ 2
2 General ............................................................................................................................................................ 3
2.1 Intended use ..................................................................................................................................... 3
2.2 Manufacturer ..................................................................................................................................... 3
2.3 Designations ..................................................................................................................................... 3
2.4 CE marking and EU Declaration of Conformity ....................................................... 4
2.5 Maintenance ...................................................................................................................................... 5
2.6 Handling of refrigerant ............................................................................................................... 5
2.7 Extended warranty ........................................................................................................................ 6
2.8 Spare parts ......................................................................................................................................... 6
2.9 Dismantling and decommissioning .................................................................................. 6
3 Technical description .......................................................................................................................... 7
3.1 Envistar Compact air handling unit .................................................................................. 7
3.2 Home Concept ................................................................................................................................ 7
4 Function .......................................................................................................................................................... 8
4.1 Cooling circuit .................................................................................................................................. 8
4.2 Controlling the StarCooler cooling unit (code ACEC) ......................................... 9
Table of Contents

Table of Contents, cntd
5 Wiring instructions and fuse protection .......................................................................... 10
5.1 MX – Complete control equipment and
UC – Complete electrical connection to terminal (without DUC). ........... 10
5.2 MK – Fans and heat exchangers electrically connected to terminal ..... 10
5.3 HS, US - Without control and without electrical connection ...................... 11
6 Operation .................................................................................................................................................... 12
6.1 Hygiene inspection .................................................................................................................... 12
6.2 Actions in case of standstill ................................................................................................ 12
6.3 Commissioning ............................................................................................................................ 13
7 Maintenance instructions ............................................................................................................ 14
7.1 Service schedule ......................................................................................................................... 14
7.2 Filter (code ACEF) ..................................................................................................................... 16
7.3 Rotary heat exchanger (code ACRR) ........................................................................... 20
7.4 Air heater water (ECET-VV) and Thermoguard (ECET-TV) ............................. 23
7.5 Air heater electric (code ECET-EV) ................................................................................. 25
7.6 Air cooler water (code ESET-VK)
Air cooler for direct expansion (code ECET-DX) .................................................. 26
7.7 Fan unit .............................................................................................................................................. 27
7.8 Damper (code ECET-UM, ECET-TR) ............................................................................. 32
7.9 Sound attenuator (code ECET-LD) ................................................................................. 33
7.10 StarCooler cooling unit (code ACEC) ......................................................................... 34
8 Troubleshooting .................................................................................................................................... 35
8.1 StarCooler cooling unit (code ACEC) ........................................................................... 35

Page 2
Operation and maintenance
Envistar Compact
DSEC181201.00.EN
Continuous product development may give rise to specification changes without notice.
1 Safety precautions
Observe warning labels on the unit as well as the following safety precautions:
1.1 Lockable safety switch
WARNING!
High voltage and rotating fan impeller, risk of personal injury.
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.
NB:
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.
1.2 Inspection doors
WARNING!
Positive pressure inside the unit, risk of personal injury. Allow the
pressure to drop before you open the inspection doors.
WARNING!
Rotating fan impeller, risk of personal injury. Shut down the unit via
the service switch in the control equipment, then turn the safety
switch to the 0 position and lock it. Wait at least 3 minutes before
opening inspection doors.
NB:
The doors in front of moving parts should normally be locked; there are
no safety guards. Before carrying out work, unlock the doors with the key
provided.
1.3 Electrical connection
WARNING!
Rotating fan impeller, risk of personal injury. The unit must not be
energised until all ducts have been connected.
NB:
Wiring of connections and other electrical work may only be carried out by
a qualified electrician or by service personnel recommended by IV Produkt.
1.4 Cooling unit
WARNING!
Hot surfaces, risk of personal injury. Shut down the unit via the
service switch in the control equipment, then turn the safety switch
to the 0 position and lock it. Wait at least 30 minutes before open-
ing the compressor inspection doors.

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Operation and maintenance
Envistar Compact
DSEC181201.00.EN
Continuous product development may give rise to specification changes without notice.
2 General
2.1 Intended use
The air handling units in the Envistar Compact series are intended for comfort
ventilation in buildings.
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 Envistar Compact is manufactured as a compact unit, and the StarCooler
cooling unit can be integrated as an optional extra.
The compact unit and cooling unit (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.
Kodnyckel
Code key
Beteckning
Project name
Ordernummer
Order number
Max. varv
Max. rev.
Tillv. ort
Made in
Tillv. månad
Manuf. month
YYMM
ACER-04-00-NO-0-00
Modell
Model
Envistar Compact
TA1 FA1 POS 1
1234-567
– –
VÄXJÖ, SWEDEN
Max. temp. °Cr/m
1805
Art. Nr. 19121-1001
Typical model identification label

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Operation and maintenance
Envistar Compact
DSEC181201.00.EN
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 (if selected) are CE marked, which means
that upon delivery they conform to applicable provisions in EU Machinery Direc-
tive 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.
The CE marking applies to units that IV Produkt AB manufactures and supplies
in the form of a unit without additional control equipment. For the CE marking of
IV products to apply, the applicable requirements of the EU Machinery Directive
2006/42/EC and related directives for control equipment shall be met when
installed for the unit.
0
1
Art. Nr. 19194-0001_01
12 3
180
s
Typical CE label for air handling units
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.
bar (e)
bar (e)
°C
bar (e)
bar (e)
kg
kg
kg
ton CO2e
ton CO2e
ton CO2e
Typical CE label for cooling units

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Operation and maintenance
Envistar Compact
DSEC181201.00.EN
Continuous product development may give rise to specification changes without notice.
2.5 Maintenance
Continuous 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.
2.6 Handling of refrigerant
The following information summarises the requirements and guidelines for han-
dling 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
Generally speaking, the unit operator must:
• Minimise and prevent leakage
• Take corrective action to remedy any leakage that arises
• Ensure that the service and repair of the refrigerant circuit is carried out by a
certified refrigeration technician
• Ensure that refrigerant is handled in an environmentally secure manner and
in accordance with national regulations.
By operator, we refer to the European Parliament’s definition: “...the natural
or legal person exercising actual power over the technical functioning of the
equipment and systems...”.
Leakage inspection and registration
The following applies to compact units with 5 CO₂ e(tonnes) refrigerant content
or more per circuit – Envistar Compact with StarCooler (code ACEC, size 16):
• Leakage inspection must be carried out by a certified refrigeration techni-
cian:
– When installing/commissioning the unit
– Periodically at least once per 12 months, i.e. no more than 12
months between inspections
– within one month of any work being performed (e.g. sealing a leak, replac-
ing 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.
If the total refrigerant content is below 5 CO₂ e (tonnes), no periodic leak detec-
tion or record keeping is needed, but the requirement for leak inspection during
installation does apply.

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Operation and maintenance
Envistar Compact
DSEC181201.00.EN
Continuous product development may give rise to specification changes without notice.
2.7 Extended warranty
In cases in which the equipment delivered falls under a 5-year warranty, in ac-
cordance with ABM 07 with supplement ABM-V 07 or in accordance with NL 01
with supplement VU03, the IV Produkt Service and Warranty Manual is supplied
with the product.
In order to lay claim to 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 are ordered from your nearest IV
Produkt sales representative. When ordering, state the order number and
designation. These are stated on a model type plate, affixed to each component.
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 Air handling unit, dismantling and decommissioning under
Documentation at ivprodukt.docfactory.com.

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Operation and maintenance
Envistar Compact
DSEC181201.00.EN
Continuous product development may give rise to specification changes without notice.
3 Technical description
3.1 Envistar Compact air handling unit
Envistar Compact is fabricated as a packaged unit in various sizes as a right- or
left-handed version. All units are equipped with rotary heat exchangers and are
available as outdoor models. The units can be connected to ducts at the ends or
via two of the connections at the top.
The units are usually supplied with integrated control equipment, but can also be
obtained without control equipment.
3.2 Home Concept
The Home Concept version of the units have, among other things, specially
adapted control equipment and air balancing dampers for the extract air. A filter
cabinet for aluminium or carbon filters is available as an optional extra.
Envistar Compact with rotor and cooling unit is not available in the
Home Concept version.

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Operation and maintenance
Envistar Compact
DSEC181201.00.EN
Continuous product development may give rise to specification changes without notice.
4 Function
4.1 Cooling circuit
From the compressor (position 1) the refrigerant is pressed as hot gas to the
condenser (position 2) where heat is emitted. The refrigerant condenses from
gas to liquid when it is cooled by the extract air.
The refrigerant passes the pressure reducing expansion valve (position 7) and
undergoes a phase transformation in the evaporator (position 8) from liquid to
gas (the refrigerant evaporates).
Inside the evaporator (position 8), the refrigerant absorbs the heat required for
phase transformation. The heat is taken from the supply air which is thus cooled.
The cold refrigerant in gaseous form is drawn back into the compressor (position
1) where it is compressed and thus heated. The gas is also used for cooling the
compressor’s electric motor. The refrigerant now contains both the heat from the
supply air, the compressor’s motor heat and the compression heat.
12
8
39
11
10
4
1
7
5
6
2
1 Compressor
2 Condensor
3 Extract air fan
4 High pressure control
5
Measurement tappings, high pressure
6 Drying filter
7 Expansion valve
8 Evaporator
9 Supply air fan
10
Measurement tappings, low pressure
11 Low pressure control
12 Capacity regulator
Flow chart for refrigerant system

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Operation and maintenance
Envistar Compact
DSEC181201.00.EN
Continuous product development may give rise to specification changes without notice.
4.2 Controlling the StarCooler cooling unit (code ACEC)
The cooling unit is equipped with a reciprocating compressor.
Function
Function COOL
The cooling compressor starts when potential-free contact closes from the con-
trol unit.
Interlocking
The compressor is interlocked across the ventilation unit. When the ventilation
unit stops, the potential-free connector opens for cooling mode and the
compressor stops.
Compressor protection
In the event of overcurrent, or if the safety circuit alarm trips the motor protec-
tion, the compressor stops, the connector for the sum alarm closes and alerts
the control unit.
In the event of an alarm, correct the fault and reset the protective motor switch.
NB:
The high pressure switch has a manual reset button.
The safety circuit alarm will trip in the event of two different faults.
• High pressure in the system, HP
• Low pressure in the system, LP
If the safety circuit alarm trips repeatedly, an authorised refrigeration service
company must be called in.
Electrical connection
The junction box contains the following:
• Motor circuit breaker
• Contactor
• Starting equipment
The junction box is mounted inside the cooling unit and has been internally
prewired and tested at the factory.

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Operation and maintenance
Envistar Compact
DSEC181201.00.EN
Continuous product development may give rise to specification changes without notice.
5 Wiring instructions and fuse protection
5.1 MX – Complete control equipment and UC – Complete electrical
connection to terminal (without DUC).
Applies to:
• units supplied prewired with complete, integrated Siemens Climatix control
equipment (code MX).
• units supplied without process unit (DUC) but with sensor and damper ac-
tuator connected electrically to the terminal (code UC). Fans and heat ex-
changers are fused and connected electrically to the terminal. The terminal
connections are positioned at a shared place in the unit. For further con-
nection to an external process unit, we recommend using a multi-conductor
cable.
Safety switch
A safety switch must be fitted and wired on each power supply.
Wiring diagrams
For wiring diagrams for units with integrated control equipment, refer to the order
unique wiring diagram supplied with the unit or docs.ivprodukt.com (Control
Diagram).
Unit functions, power supply and fuse protection
For power supply to the unit functions and recommended fuses, refer to Order
Unique Documentation at docs.ivprodukt.com (Technical Data and Control
Diagram), or the product program IV Produkt Designer.
5.2 MK – Fans and heat exchangers electrically connected to terminal
For units supplied without control equipment but with fans and heat exchangers
connected electrically to terminals (code MK).
Connections to terminal blocks are located on each unit section.
For wiring instructions and recommended fuses, refer to Order Unique Docu-
mentation at docs.ivprodukt.com (Terminal Connection and Technical Data).
Safety switch
A safety switch must be fitted and wired on each power supply.

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Operation and maintenance
Envistar Compact
DSEC181201.00.EN
Continuous product development may give rise to specification changes without notice.
Fan, sizes 04 and 06
A (D+)
B (D-)
Brun/Brown
GND
Vit/White
Blå/Blue
E1 +
+
-
GND -
A (D+)
B (D-)
11
14
Styrning 0-10 V =
Control 0-10 V =
RS-485 Modbus
D1
10 V
Brandfunktion
Fire mode
LARM (Bryter vid larm)
ALARM (Opens when triggered)
Ref.
Vit/White
Brun/Brown
Grå/Grey
Rosa/Pink
Gul/Yellow
Grön/Green
PE
L1
N
Kraftmatning 1×230 V ~ 50 Hz
Power supply 1×230 V ~ 50 Hz
INKOPPLING / WIRING
Ziehl 1×230 V - BD
MX
IVP-styr
IVP Controls
MK
UC
US
Extern styr
External
Controls
Art. Nr. 19151-0430_00
Fan, sizes 10 and 16
INKOPPLING / WIRING
Ziehl 1×230 V - DC
PE
L1
N
Kraftmatning 1×230 V ~ 50 Hz
Power supply 1×230 V ~ 50 Hz
Art. Nr. 19151-0431_00
MX
IVP-styr
IVP Controls
MK
UC
US
Extern styr
External
controls
A (D+)
B (D-)
Brun/Brown
GND
Vit/White
Blå/Blue
E1 +
+
-
GND -
A (D+)
B (D-)
11
14
Styrning 0-10 V =
Control 0-10 V =
RS-485 Modbus
D1
24 V
Brandfunktion
Fire mode
LARM (Bryter vid larm)
ALARM (Opens when triggered)
Ref.
Vit/White
Brun/Brown
Grå/Grey
Rosa/Pink
Gul/ Yellow
Grön/Green
Rotary heat exchanger (code ACRR)
+
–
33
34
36
37
41
42
43
L
N
PE
CONTROL
0-10 V DC
POWER SUPPLY
1×230 V AC
ALARM (CLOSES IN
EVENT OF ALARM)
COOLING RECOVERY
(CLOSED CONTACT
GIVES FULL SPEED)
Air heater electric (code ECET-EV)
For power supply, output variant and
recommended fuse, refer to Order Unique
Documentation at docs.ivprodukt.com (Technical
Data).
Y
G0
1
2
PE
L3
L2
L2
L1 L1
3
4
L
N
PE
NC
NO
+
–
CONTROL
0-10V=
OPERATION
1×230V~
ALARM (CLOSES
BETWEEN 3-4 IN
EVENT OF ALARM)
POWER SUPPLY
5.3 HS, US - Without control and without electrical connection
• For units without control equipment and without electrical connection (code
HS), a control diagram is available for the cooling unit (code ACEC) at
docs.ivprodukt.com, for other connection instructions, see below.
• For units without control equipment and without electrical connection (code
US), refer to the connection instructions below.
Safety switch
A safety switch must be fitted and wired on each power supply.

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Operation and maintenance
Envistar Compact
DSEC181201.00.EN
Continuous product development may give rise to specification changes without notice.
6 Operation
6.1 Hygiene inspection
Envistar Compact conforms to guidelines in VDI 6022 Part 1: Hygiene and Hy-
giene Inspections of HVAC Systems.
For this to apply, a hygiene inspection of the system must be carried out and the
system must be cleaned thoroughly as needed before start-up.
For units (code MK, US,UC):
NB:
Pressure surges on filters and air ducts must be prevented through the
design of the duct system and the settings/configuration of the control
system (e.g. soft start of fans, open damper when the fans are in opera-
tion).
6.2 Actions in case of standstill
According to guidelines for hygienic design VDI 6022 Part 1:
In case of prolonged standstill in air treatment systems (more than 48 hours),
it should be ensured that no moist areas can be found downstream from the
cooling coils or humidifier.
In order to avoid the accumulation of moisture – turn off the cooling coils and
humidifier in good time and ventilate the air ducts dry (gradual shut-down). Also,
be sure to set up or program the required functions in the building’s automation/
control system for automatic dry blowing of air coolers and downstream
sections.

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Operation and maintenance
Envistar Compact
DSEC181201.00.EN
Continuous product development may give rise to specification changes without notice.
6.3 Commissioning
Envistar Compact with rotor (code ACER) and Envistar Compact with rotor and
cooling unit StarCooler (code ACEC) are factory-assembled compact units that
are tested and documented at the factory.
Commissioning of the unit must be carried out by competent personnel accord-
ing to the Commissioning Checklist for air handling units, which can be found at
ivprodukt.docfactory.com.
The commissioning procedure applies to units that are supplied with control
equipment (code MX).
Installation of cooling units requires leak inspection by a certified cooling
technician.
The validity of the product warranty is conditional on the system having been
correctly commissioned. Working on the cooling unit during the warranty period
without the approval of IV Produkt shall render the warranty void.
Prior to commissioning, the contractor must:
NB:
Wiring of connections and other electrical work may only be carried out
by a qualified electrician or by service personnel recommended by IV
Produkt.
1. Connect the unit to the power supply via a lockable safety switch.
2. Connect the heating/cooling coil.
3. Connect all ducts.
WARNING!
Rotating fan impeller. The unit must not be energised until all
ducts have been connected.
Follow the troubleshooting instructions in the troubleshooting chart before
contacting a service representative for servicing a unit under warranty. This will
prevent any unnecessary service calls.

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Operation and maintenance
Envistar Compact
DSEC181201.00.EN
Continuous product development may give rise to specification changes without notice.
7 Maintenance instructions
7.1 Service schedule
The service schedule comprises actions and service intervals for functional sections that can be part
of the air handling unit. The unit consists of one or more of these functional sections. The relevant sec-
tions are marked on the list in the table of contents.
Make copies of the service schedule for future use before you fill in servicing data for the first time.
For hygiene inspections according to guideline VDI 6022, see separate
Checklist for Operation and Maintenance, Hygiene checks at ivprodukt.docfactory.com.
Service year 20.......-....... for unit no. ........................ Service performed * (date and signature)
Functional section Code Recommended ac-
tion (insp.)
Page
ref.
3000 h /
6 mths
6000 h /
12 mths
9000 h /
18 mths
12,000
h /
24 mths
date date date date
Filter supply
air, extract
air
ACEF
Check pressure drop
Change filter if
necessary
14 signature signature signature signature
Rotary heat
exchanger ACRR
Visual inspection
Check press. balance
Check di. pressure
Clean if necessary
16 signature signature signature signature
H
O
2
Air heater
water
ECET-VV,
ECET-TV
Visual inspection
Clean if necessary
Check function
19 signature signature signature signature
Air heater
electric ECET-EV
Visual inspection
Clean if necessary
Check function
20 signature signature signature signature
H
O
/DX
2
Air cooler
water
ECET-VK,
ECET-DX
Visual inspection
Check drainage
Clean if necessary
Check function
21 signature signature signature signature
Fan unit -
Visual inspection
Clean if necessary
Check the air flow
22 signature signature signature signature
Damper ECET-UM,
ECET-TR
Visual inspection
Clean if necessary
Check tightness
25 signature signature signature signature
Sound at-
tenuator ECET-LD Visual inspection Clean if necessary 26 signature signature signature signature
*Every 3,000th hour in operation or every 6th month depending on which occurs first. More frequent
servicing may be required in certain environments.

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Operation and maintenance
Envistar Compact
DSEC181201.00.EN
Continuous product development may give rise to specification changes without notice.
Cooling unit
For units equipped with cooling units.
Service year 20.......-....... for unit no. ............................ Service performed * (date and signature)
Functional section Code Recommended action
(insp.)
Page
ref.
3000 h /
6 mths
6000 h /
12 mths
9000 h /
18 mths
12,000 h /
24 mths
date date date date
Cooling unit ACEC
Visual inspection
Check drainage
Clean if necessary
Check function
Check for leakage and
report if necessary
27 signature signature signature signature
* Every 3,000th hour in operation or every 6th month depending on which occurs first. More frequent servic-
ing may be required in certain environments.
Home Concept
For the Home Concept version.
Service year 20.......-....... for unit no. ............................ Service performed * (date and signature)
Functional section Code Recommended ac-
tion (insp.)
Page
ref.
3000 h /
6 mths
6000 h /
12 mths
9000 h /
18 mths
12,000 h /
24 mths
date date date date
AL
Aluminium
filter in filter
cabinet
ACET-08F-
size-AL
Check pressure drop
Clean if necessary 14 signature signature signature signature
CCarbon filter in
filter cabinet
ACET-08F-
size-BR
Inspection indication
Replace if necessary 14 signature signature signature signature
* Every 3,000th hour in operation or every 6th month depending on which occurs first. More frequent servic-
ing may be required in certain environments.

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Operation and maintenance
Envistar Compact
DSEC181201.00.EN
Continuous product development may give rise to specification changes without notice.
7.2 Filter (code ACEF)
The air filters in an air handling unit are designed to pre-
vent dust and other impurities from entering the building.
They should also protect sensitive components inside the
unit, e.g. water coils and heat exchangers, from exposure
to impurities.
The dust separation efficiency varies considerably be-
tween various filter types. The dust collecting efficiency
also varies substantially. It is therefore important to use
filters of the same quality and capacity when you change
them.
According to guidelines for hygienic design VDI 6022 Part
1: The supply air filter must be class ePM1-50% (F7) or
have a greater filtration efficiency.
The filters are designed for one-time use. If they become
fouled, the unit will lose capacity. The filters should there-
fore be changed if the pressure drop across them ex-
ceeds the specified final pressure drop.
It is important to stop the unit before changing filters to
prevent dust from coming loose and being drawn into the
unit. The inside surfaces of the filter sections should therefore also be cleaned
when the filters are changed.
For the Home Concept version (code ACET-08)
The filter cabinet is an optional extra for the Home Concept version and can be
used for
• aluminium filter on the extract air side
• carbon filter on the supply air side
AL
C
AL - aluminium filter, C - carbon filter, Black Ridge
The aluminium filter is intended for use where the extract air contains grease
particles to avoid grease being sucked into the unit. The filter is a knitted flat-
type filter. The aluminium filter can be cleaned using hot water and a mild alka-
line detergent.
Filter