Swegon COMPACT Air User manual

GB.COMPACTUT.170622
Registered design. The company reserves the right to make design changes without prior notice. www.swegon.com 1
INSTALLATION AND MAINTENANCE INSTRUCTIONS FOR
COMPACT UNIT & COMPACT TOP
Applicable to program version 3.02 and newer versions
COMPACT Top
COMPACT Unit
The document was originally written in Swedish.

GB.COMPACTUT.170622
Registered design. The company reserves the right to make design changes without prior notice.
2 www.swegon.com
Content
1 GENERAL.................................... 3
1.1 Range of Application................................3
1.2 Mechanical Design...................................3
1.3 Control System ........................................3
1.4 Environmental Documentation.................3
1.5 The Components of
the Air Handling Units....................................4
1.5.1 COMPACT Unit ..................................4
1.5.2 COMPACT Top ...................................5
2 SAFETY PRECAUTIONS ............. 6
2.1 Safety switch/Main Switch........................6
2.2 Risks .......................................................6
2.3 Safety Guards ..........................................6
3 INSTALLATION ........................... 7
3.1 General....................................................7
3.2 Transport Within the Site..........................7
3.3 Parts Packed Together
with the Room Units ......................................7
3.3.1 Hand-held Micro Terminal...................7
3.3.2 Supply Air Sensor................................7
3.3.3 Document Pocket...............................7
3.4 Location...................................................7
3.4.1 COMPACT Unit ..................................7
3.4.1.1 Airflow Direction .............................7
3.4.1.2 Conversion to the Left-hand Version,
if required ...................................................8
3.5 Connecting ductwork
to the Air Handling Unit .................................8
3.6 To Mount the Supply Air Sensor................8
3.7 Connection to the Electric Power Grid ......9
3.7.1 Access................................................9
3.7.2 Electrical Connections.........................9
3.8 To Connect External Cables ......................9
4 COMMISSIONING .................... 10
4.1 General..................................................10
4.2 Adjusting the Duct System
and Air Devices ............................................11
4.2.1 Adjustment Sequence.......................11
4.2.2 Adjustment Procedure ......................11
4.3 To Adjust the Pressure Balance ...............12
4.3.1 General ............................................12
4.3.2 To Ensure the Correct
Leakage Direction......................................13
5 HAND-HELD MICRO TERMINAL
AND HOW TO USE THE MENUS. 14
5.1 HAND-HELD MICRO TERMINAL..............14
5.1.1 General ............................................14
5.1.2 Buttons ............................................14
5.1.3 Display Screen ..................................14
5.1.4 Abbreviations ...................................14
5.2 Menu tree..............................................15
6 MAIN MENU............................. 16
6.1 General..................................................16
6.2 Selection of Language............................16
6.3 Changing Operating Mode ....................16
6.4 Settings .................................................16
7 USER LEVEL.............................. 17
7.1 Temperature...........................................17
7.1.1 Readings ..........................................17
7.1.2 Settings............................................17
7.2 Air flow/Pressure ....................................18
7.2.1 Readings ..........................................18
7.2.2 Settings............................................18
7.3 Switch clock...........................................19
7.4 Filters.....................................................19
7.4.1 Readings ..........................................19
7.4.2 Calibration - Filters............................19
7.5 Air Adjustment.......................................20
7.6 Alarms ...................................................20
8 INSTALLATION LEVEL .............. 21
8.1 Menu Survey..........................................21
9 FUNCTIONS .............................. 22
9.1 Temperature...........................................22
9.2 Temperature Regulation .........................22
9.2.1.1 ERS Regulation ..............................23
9.2.1.2 Supply Air Regulation ....................24
9.2.1.3 Extract Air Regulation ....................24
9.2.2 Outdoor Temperature Compensation25
9.2.3 Summer Night Cooling .....................26
9.2.4 Intermittent Night-time Heating........27
9.2.5 Morning BOOST ...............................28
9.2.6 Setpoint Temperature Displacement..28
9.2.7 External Temperature Sensors ...........29
9.3 Flow/Pressure.........................................30
9.3.1 Fan Regulation .................................30
9.3.1.1 Flow Regulation.............................30
9.3.1.2 Pressure Regulation .......................30
9.3.1.3 Demand Control............................30
9.3.1.4 Slave Control.................................30
9.3.1.5 Clean Air Control...........................31
9.3.2 Outdoor Temperature Compensation32
9.3.3 Downspeed Control of Fan Speed to
Min. Set Point, Airflow/pressure.................33
9.3.4 To adjust the flow of the slave fan.....33
9.4 To Activate the GOLD SD Filter Monitoring
Function ......................................................33
9.5 Operation ..............................................34
9.5.1 Switch clock .....................................34
9.5.2 Extended Operation..........................34
9.5.3 Summer time/Winter time ................34
9.6 Heating..................................................35
9.6.1 Heat exchanger ................................35
8.6.1.1 Defrosting the
rotary heat exchanger................................35
9.6.2 Pre-/Reheating..................................36
9.6.3 Heating BOOST ................................36
9.7 Cooling..................................................37
9.7.1 Operation.........................................37
9.7.2 Cooling Regulation (Control) ............37
9.7.3 Periodic Operation............................38
9.7.4 Regulation Speed .............................38
9.7.5 Outdoor Temperature Limit...............38
9.7.6 Restart Time .....................................38
9.7.7 Cooling Min Air Flow........................38
9.7.8 Neutral Zone ....................................38
9.7.9 Cooling BOOST ................................38
9.8 Input/output connections.......................39
9.9 IQnomic Plus..........................................40
9.10 All Year Comfort ..................................41
10 AUTOMATIC FUNCTIONS ...... 42
10.1 General................................................42
10.1.1 Starting Sequence ..........................42
10.1.2 Cooling Recovery............................42
10.1.3 Zero Point Calibration.....................42
10.1.4 Anti-frost Monitoring Function – Air
Heater for Hot Water.................................42
10.1.5 Additional cooling –
Electric Air Heater......................................42
10.1.6 Additional running -
Heat Exchanger .........................................42
10.1.7 Density-corrected Airflow ...............42
11 READINGS .............................. 43
12 MANUAL TEST ....................... 43
13 ALARM SETTINGS.................. 44
13.1 Fire Alarms...........................................44
13.2 External Alarms....................................44
13.3 Alarm Limits.........................................44
13.4 Alarm Priority.......................................44
14 HAND-HELD TERMINAL ........ 45
14.1 Language.............................................45
14.2 Air flow unit.........................................45
14.3 Min/Max Adjustment ...........................45
14.4 Base Settings........................................45
15 COMMUNICATION................. 46
15.1 EIA-485 ...............................................46
15.2 Ethernet...............................................46
16 SERVICE LEVEL....................... 46
17 MAINTENANCE ...................... 47
17.1 Filter Change .......................................47
17.1.1 To remove the Filters.......................47
17.1.2 To fit new filters..............................47
17.2 Cleaning and Inspection.......................47
17.2.1 General ..........................................47
17.2.2 Filter Space.....................................47
17.2.3 Heat exchangers.............................47
17.2.4 Fans and Fan Space ........................47
17.3 Performance Checks ............................47
18 ALARMS AND
FAULT TRACING.......................... 48
18.1 General................................................48
18.1.1 A and B Alarms...............................48
18.1.2 Resetting of alarms.........................48
18.1.3 Changing Alarm Settings................48
18.2 Alarm Descriptions
with Factory Settings....................................49
19 INFORMATIVE MESSAGES .... 54
20 TECHNICAL DATA .................. 55
20.1 Dimensions,
COMPACT Unit one-piece unit .....................55
20.2 Dimensions,
COMPACT Top One-piece Unit .....................55
20.3 Electrical Equipment Cubicle ................56
20.3.1 Internal Connections ......................57
20.3.2 Connection to Terminal Blocks ........58
20.4 Electrical Data ......................................59
20.4.1 Air Handling Unit............................59
20.4.2 Fans ...............................................59
20.4.3 Electrical equipment cubicle............59
20.4.4 Heat Exchanger Motor....................59
20.4.5 Control Inaccuracy..........................59
21 ANNEXES ............................... 60
21.1 Compliancy Declaration .......................60
21.2 Commissioning Record.........................61
21.3 Ecodesign data.....................................71

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Registered design. The company reserves the right to make design changes without prior notice. www.swegon.com 3
1 GENERAL
1.1 Range of Application
The COMPACT Unit and COMPACT Top are complete air
handling units with built-in control equipment. The air
handling units are designed for comfort ventilation and
can be utilised in smaller buildings such as offices, schools,
day nurseries, public buildings, shops and residential build-
ings.
The COMPACT Unit air handling units have duct connec-
tion spigots on their end panels whereas the COMPACT
Top units have them at the top. The type of unit can
therefore be selected on the basis of the amount of space
available for installing it and for arranging the ducts.
The COMPACT Unit and COMPACT Top are one-piece air
handling units. If supplementary function sections such as
dampers and air coolers are required, they must be in-
stalled in the ductwork.
In order to fully obtain all the benefits the COMPACT
system has to offer, it is important keep in mind the air
handling unit’s special characteristics in conjunction with
designing the project, installing the unit, adjusting it and
operating the system.
The unit must be installed indoors.
Important!
Always read the safety precautions in Section 2 that
explain the risks involved in running the unit and
designate who shall be permitted to operate and
service the unit, and carefully follow the installation
instructions provided in each paragraph.
The product identification plate is situated on the top of
the air handling unit. Refer to the particulars on the prod-
uct identification plate when you contact Swegon.
1.2 Mechanical Design
The COMPACT is available in one physical size and for two
airflow ranges.
The external sheet metal surfaces of the unit are painted
white, NCS S 0502-G, except for the rear of the COM-
PACT Top unit which consists of an aluminium-zinc plated
sheet steel casing panel..
The upper section of the junction hood of the COMPACT
Unit is light grey, NCS S3502-B and the lower section is
dark grey, NCS S6010-R90B.
The inner skin is predominantly made of aluminium-zinc
plated sheet steel. The casing has 30 mm thick intervening
mineral wool insulation; the inspection doors have 50 mm
thick insulation.
The COMPACT Unit and the COMPACT Top are equipped
with pleated, Class F7 filters.
The type RECOnomic rotary heat exchanger is variable
speed controlled and has a temperature efficiency of up to
85%.
The supply air and extract air fans are direct-driven plug
fans. The fans are equipped with EC motors that provide
high efficiency across the entire operating range.
1.3 Control System
The IQnomic control system is microprocessor-based and is
integrated into the unit. It controls and regulates the fans,
heat exchanger, temperatures, airflows, operating times
and a large number of internal and external functions as
well as alarms.
1.4 Environmental Documentation
Environmental Documentation with the Dismantling
Instructions for Recycling and the Environmental Product
Declaration can be downloaded from our website: www.
swegon.com.
The air handling unit is designed in such a way that it can
be dismantled into its natural parts for scrapping. When
the unit has ended its useful product life, the services of
an accredited recycling company should be utilised for
disposal.
Approximately 94% of the parts in COMPACT air handling
units are recyclable.
Swegon AB is associated with the REPA Register, No.
5560778465.
Contact Swegon AB, Phone: [phone], if you
have any questions regarding the dismantling instructions
or the air handling unit’s impact on the environment.

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4 www.swegon.com
1
2
1.5 The Components of the Air Handling Units
1.5.1 COMPACT Unit
The individual components each specified below in a simplified and
diagrammatical description.
The air handling units are supplied in the right-hand ver-
sion as shown in Fig. 1a.
Coversion to the left-hand version as shown in Fig. can be
carried out via a simple adjustment in the control equip-
ment. See 3.4.1.2. The air handling unit can be installed
vertically. See 3.4.1.1.
In the left-hand version (Fig. 1b), the components marked
with an asterisk change function and designation (the
components are named according to whether they are for
supply air or extract air).
The arrangement of the components
and their designations
1OUTDOOR AIR* (Left-hand version: Extract air)
2 EXHAUST AIR* (Left-hand version: Supply air)
3 Extract air fan* with motor and motor control system
4 Pressure sensor, extract air fan*
(Position on function selector switch = 1)
5 Electrical equipm. cubicle with control unit
6 Hand-held micro terminal
7 Main switch/Safety switch
8 Extract air filter*
9 EXTRACT AIR* (Left-hand version: Outdoor air)
10 SUPPLY AIR* (Left-hand version: Exhaust air)
11 Supply air temp. sensor (to be mounted in supply air duct)
12 Supply air fan* with motor and motor control system
13 Extract air temperature sensor*
14 Pressure sensor, supply air fan*
(Position on function selector switch = 2)
15 Heat exchanger
16 Drive motor, heat exchanger
17 Sensor, rotation monitor
18 Outdoor air temperature sensor*
19 Supply air filter*
Left-hand version
Fig 1b
Outdoor air Supply air Extract air Exhaust air
1
2
Fig 1a
1
2
3 4
56
11
7 8
10
9
1213141516171819

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1.5.2 COMPACT Top
The individual components each specified below in a simplified
and diagrammatical description.
Outdoor air Supply air Extract air Exhaust air
The arrangement of the components
and their designations
1 Supply air fan with motor and motor control system
2 Pressure sensor, supply air fan
(Position on function selector switch = 2)
3 Rotation monitor sensor
4 Drive motor, rotary heat exchanger
5 Rotary heat exchanger
6 Sensor, outdoor air temperature
7 Supply air filter
8 Supply air temp. sensor (to be mounted in supply air duct)
9 Hand-held micro terminal
10 Extract air fan with motor and motor control system
11 Pressure sensor, extract air fan
(Position on function selector switch = 1)
12 Electrical equipm. cubicle with control unit
13 Sensor, extract air temperature
14 Extract air filter
15 OUTDOOR AIR
16 EXTRACT AIR
17 SUPPLY AIR
18 EXHAUST AIR
19 Main switch/Safety switch
View from the above
7
1615
1817
6
5
2
1
10
9
19
11
4
3
12
13
14
8

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2.2 Risks
Warning
Before carrying out any work, make sure that the
power supply to the air handling unit has been
switched off.
Risk areas with moving parts
Typical moving parts are fan impellers and drive pulleys of
the rotary heat exchanger.
Inspection doors can only be opened using a special key,
they therefore function as safety guards for fans and the
heat exchanger. If the ducts are not connected to the fan
outlets, the outlets must be fitted with a safety guard
(wire mesh screen).
Warning
The inspection doors on the filter/fan sections must
not be opened while the unit is in operation.
Under normal operating conditions, use the stop
button on the hand-held terminal to stop the air
handling unit.
Wait until the fans have stopped rotating before
opening the inspection door.
The air pressure inside the filter/fan section is posi-
tive, which means that the door can fly open.
2.3 Safety Guards
The lockable inspection door serves as a safety guard for
fans/heat exchangers.
The cover over the power supply unit in the electric equip-
ment cubicle serves as a safety guard for this unit.
Only a qualified electrician or trained service technicians
shall be allowed to remove the safety guards.
Warning
The power supply to the unit shall be isolated by
switching off the safety isolating switch before
removing the safety guard.
As long as the air handling unit is operating, the
safety guards must always be mounted, all inspec-
tion doors must be closed, and the junction hood
(COMPACT Unit) on the top of the unit must be
mounted.
2 SAFETY PRECAUTIONS
All staff concerned must acquaint themselves with these
instructions before beginning any work on the unit. Any
damages to the unit or parts of it due to improper han-
dling or misuse by the purchaser or the fitter cannot be
considered subject to guarantee if these instructions have
not been followed correctly.
Warning
Only a qualified electrician or service personnel
trained by Swegon shall be permitted to modify
the air handling unit in conjunction with electrical
installations or the wiring of external functions.
2.1 Safety switch/
Main Switch
On COMPACT Unit, the safety switch is externally posi-
tioned on the junction hood.
On the COMPACT Top, the safety switch is positioned on
the top front edge of the air handling unit.
The air handling unit must normally be started and
stopped from the hand-held micro terminal; not by
switching the safety isolating switch on and off.
Always switch off the safety isolating switch before serv-
icing the unit if not otherwise specified in the pertinent
instructions.

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3.1 General
The air handling unit is delivered with packaging, standing
on a wooden pallet.
Any accessories that have been ordered with the unit are
supplied in unmounted condition.
Do not remove the air handling unit’s protective plastic foil
packaging until you’ve finished installing it.
3.2 Transport Within the Site
Before removing the transport pallet from the unit, deter-
mine whether a forklift truck or a pallet transporter will be
used for further transporting the unit to where it is to be
placed.
3.3 Parts Packed Together with the Room
Units
Components such as the hand-held micro terminal, supply
air sensor and document pocket are supplied in separate
packaging and delivered together with the air handling
unit.
3.3.1 Hand-held Micro Terminal
The hand-held micro terminal is equipped a 3 m long
cable and a quick-fit connector. For particulars of the
electrical connections, see 20.3.1. A holder for the hand-
held micro terminal is supplied together with the air
handling unit. The holder can be secured to the outside
of the air handling unit or at another appropriate place.
3.3.2 Supply Air Sensor
The sensor is equipped with a 7 m long cable and a
quick-fit connector.
For mounting, see 3.6.
3.3.3 Document Pocket
Secure the document pocket to the exterior of the air
handling unit or at another appropriate place.
3.4 Location
The air handling unit must be mounted horizontally on a
flat and firm supporting surface and this surface must be
constructed in a way enabling it to support the weight of
the unit.
The design of the COMPACT Unit makes it necessary to
mount it on a stand or some other form of base. Other-
wise it will not be possible to open the inspection doors.
The stand is available as an accessory.
3 INSTALLATION When installing the air handling unit and connecting pipe-
work and electric cables, make sure that adequate free
space is provided for opening the inspection doors and
covers and withdrawing functional sections, such as filter
cassettes and fan assemblies, clear of the unit casing.
Inspection space required
COMPACT Unit: A clear space of 800 mm must be pro-
vided in front of the unit for opening the inspection doors
and at least 200 mm must be provided above the unit for
opening the junction hood.
COMPACT Top: A clear space of 1,000 mm should be pro-
vided in front of the unit for opening the inspection door.
(right hung).
3.4.1 COMPACT Unit
3.4.1.1 Airflow Direction
The COMPACT Units are produced in one single variant
where fans, heat exchanger and filters always are arranged
at their given physical location inside the unit.
The air handling units are delivered in the right-hand ver-
sion, but can easily be converted to the left-hand version.
See below. All that is needed to be done is to move a DIL
switch on the control unit, see 3.4.1.2.
The COMPACT Unit can also be installed vertically. The
stand is available as an accessory.
Outdoor air Supply air Extract air Exhaust air
Right-hand version
Left-hand version
The air handling units are supplied in the right-hand version.
The unit can be easily converted to the left-hand version at the
building site.
The air handling unit can be installed vertically. This provides six
different installation alternatives.

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8 www.swegon.com
3.6 To Mount the Supply Air Sensor
Supply air temp. sensor must be mounted inside the sup-
ply air duct.
The sensor must be positioned at a spot that is at least 1.5
metres from the air handling unit.
Important! If an air heater and/or air cooler, if required, is
installed in the system, the sensor must be positioned 1.5
metres from the unit measured from these components.
1. Measure and mark where the sensor is to be placed.
2. Drill an 11 mm dia. hole in the supply air duct.
3. Apply sealing compound around the hole and secure
the sensor by means of 2 self-tapping screws.
4. Connect the sensor's quick-fit connector to the socket
at the top of the air handling unit, see 20.3.1. An
extension cable is available as an accessory.
3.4.1.2 Conversion to the Left-hand Version, if re-
quired
1. Stop the air handling unit in the hand-held micro termi-
nal. Close the safety isolating switch.
2. Wait until the fans have stopped rotating. Open the
inspection doors.
3. Remove the screws that secure the cover plate of the
heat exchanger for access to the DIL switch.
4. Set DIL switch No. 1 to the ON position (see 20.3) for
the left-hand version (see 3.4.1.1).
5. Refit and secure the cover plate.
6. Rotate the rotary heat exchanger by hand to rotate
downwards. This is sufficient tp rotate the rotor approx.
one quarter of a revolution.
7. Close the inspection doors.
8. Switch on the safety isolating switch.
9. Start the air handling unit.
3.5 Connecting ductwork to the Air Han-
dling Unit
The air handling unit’s connection spigots are circular and
can be connected to ducts by means of insertion joints
fitted with a rubber ring seal.
Spiral duct bends fitted with a rubber ring seal can be con-
nected directly without any insertion joint.
The insertion joint/duct bend must be secured by pop
rivets or tape in the spigot of the air handling unit.
The ducts should be insulated according to local regula-
tions and customary trade standards.
Insertion joint Duct
Duct bend
Duct
Ø 11 mm
Sealing compound
Self-tapping screw

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N L3 L2 L1 PE
N L1 PE
3.7 Connection to the Electric Power Grid
Connection of the power supply cable from the mains
must be wired across a safety isolating switch.
3.7.1 Access
COMPACT Unit
Remove the upper section of the junction hood. Run the
cable through the cable gland on the backside of the junc-
tion hood.
3.8 To Connect External Cables
3.7.1 COMPACT Unit
To gain access to the control unit, remove the cover plate
in front of the heat exchanger. Remove the upper section
of the junction hood. Cables from external sources can
be run in to the electric cubicle through the rubber dia-
phragm on the backside of the junction hood.
N.B.! Cables for external communication outside the air
handling unit must be arranged at a minimum distance of
100 mm from any current-carrying (live) cable.
3.7.2 COMPACT Top
To gain access to the power unit, remove the cover plate
in the unit’s extract air duct.
Cables from external sources can be run into the air han-
dling unit through the rubber diaphragm by the extract air
intake, located at the top of the unit.
The external cables can be extended in the existing cable
protection in the extract air duct of the unit. Bundling
straps are pre-fitted inside the cable protection. After
running the cables, secure them by pulling the bundling
straps tight.
Cables can be run in to the electric cubicle according to
appropriate hole indication in the rubber diaphragm.
N.B.! Cables for external communication outside the air
handling unit must be arranged at a minimum distance of
100 mm from any current-carrying (live) cable.
Junction hood
Safety isolating switch
Safety isolating switch
Cover
COMPACT Top
Open the inspection panel and dismantle the cover. Run
the cable through the cable gland by the safety isolating
switch.
Cable gland
Cable gland
3.7.2 Electrical Connections
1-phase, 3-wire, 230 V -10/+15%, 50 Hz, 10 AT.
Safety isolating switch
Electrical equip-
ment cubicle
Extract air duct
of the air han-
dling unit
Cable protection
Cover plate

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4 COMMISSIONING
4.1 General
Sequence for commissioning:
1. Check that there are no foreign objects in unit, ducting system
or functional sections.
2. Turn the safety isolating switch to the ON position (I).
3. Select the language desired, if you have not already done so.
See Section 6.2 or 14.1.
4. The unit has factory settings which make it ready to use. See
Section 21.2 Commissioning record.
However, in many cases, these settings need to be adjusted to
suit the current installation.
Program the switch clock, operating conditions, temperatures,
airflows and functions according to the procedures in Sections
5-16.
Select whether l/s, m3/s or m3/h shall be used as the flow unit.
(INSTALLATION LEVEL in the HAND-HELD MICRO TERMINAL
menu).
Fill out the Commissioning Record and save it in the document
pocket of the unit.
5. Activate, if needed, manual or auto operation (MAIN MENU)
or lock the speed of the fans (AIR ADJUSTMENT menu).
Adjust the ducting system and air devices as described in Section
4.2.
6. Finish off with a filter calibration as described in Section 7.4.2.

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4.2 Adjusting the Duct System
and Air Devices
In order to prevent the fans from consuming more power
than necessary, it is important to keep the pressure drop in
the system as low as possible.
It is also important that ducting systems and air devices are
correctly adjusted to provide the comfort expected.
When adjusting air devices and the duct system installed
in combination with the GOLD, it is appropriate to follow
the proportionality method.
This means that the proportion between the airflows in
branch ducts stays constant even if the airflow in the main
ducts is changed. The same proportion applies to the air
devices in the installation.
When adjusting the ducting system there is provision for
locking the speed of the fans in the unit to a specific pre-
set flow rate, see Section 6.5.
4.2.1 Adjustment Sequence
The system should be adjusted in the following order:
1. Adjust of the air devices in each branch duct.
2. Adjust the branch ducts.
3. Adjust the main ducts.
4.2.2 Adjustment Procedure
1. Set all the air devices and dampers to the fully open
position.
2. Calculate the ratio of the airflow reading to the design
airflow of all the air devices, branch ducts and main ducts.
The air device in every branch that has the lowest ratio
should be fully open. Use this air device as an INDEX AIR
DEVICE. The same applies to branch dampers and main
dampers.
Example on how to carry out adjustments
– Start adjusting duct branch B, since this one has
the highest ratio.
– The last air device, B3, has the lowest ratio and
should be fully open.
Adjust the other air devices, B1 and B2, so that
these will have the same ratio as air device B3 (see
item 5 above).
– Now adjust the air devices in branch duct C. Air
device C4 should be fully open; throttle the others
to the same ratio.
– Adjust the air devices in branch duct A. The index
air device here is air device A3, which means that
you first throttle air device A4 (the reference device)
to device A3:s ratio.
Thereafter the others are adjusted to the same ratio
as air device A4.
– Throttle branch damper B to the same ratio as branch damper A,
throttle branch damper C to the same ratio as branch damper A.
Check that all dampers have the same ratio.
When the adjustment has been completed, 3 air devices and
one branch damper should stand fully open to obtain the lowest
possible pressure in the system.
qp= design airflow (l/s)
qm= airflow reading (l/s)
qm
K (Ratio) =
qp
When you’ve completed the adjustments, one air device in
every branch, one branch damper and one main damper
should consequently be fully open.
3. Start adjusting the main duct that has the highest ratio
and the branch duct in the main duct that has the highest
ratio. Starting from this point enables you to “press” the
air in front of you toward the sections of the system that
have the least air.
4. Adjust the last air device on the duct branch so that
it will have the same ratio as the index device. This air
device will serve as the REFERENCE AIR DEVICE. Often
it is the last air device on the branch that has the lowest
ratio and should be open. In this case, the same air device
serves as the index device and reference device.
5. Throttle the other air devices in the branch to the same
ratio as the reference device.
Note! The ratio in the reference device will change every
time another air device is throttled, so in practice the ratio
for the reference device can be set slightly higher. The
reference device must be measured in between each air
device throttled.
6. Go to the branch that had the next highest ratio and
adjust the air devices there, etc.
Note! All branch dampers should be fully open until all air
devices have been adjusted.
7. Throttle the branch damper that had the highest ratio
to the same ratio that the branch of the lowest ratio had.
Note! Keep in mind that the index damper changes ratio;
proceed as described in item 5.
8. When all branches have been adjusted, throttle the
main dampers in the same manner.
Also see the example below on how to carry out adjust-
ments.

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4.3 To Adjust the Pressure Balance
4.3.1 General
The air handling unit is equipped with an adjustment
plate designed for achieving a correct air leakage direction
across the heat exchanger. This prevents the extract air
from being carried over to the supply air.
The pressure balance in the unit should be adjusted when
the ventilation system has been fully installed and all the
air diffusers have been airflow-adjusted as well as for the
supply air and extract air flows that prevail while the air
handling unit is operating normally.
CLOSE OPEN
Adjustment plate
COMPACT Unit
CLOSE
OPEN
COMPACT Top

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Pressure measurement tappings – leakage direction
- (blue)
+ (White)
COMPACT Unit
(Unit shown in the
right-hand version)
COMPACT Top
EXTRACT AIR
4.3.2 To Ensure the Correct Leakage Direction
The pressure balance in the unit is adjusted by means of a
adjustment plate mounted in the extract air inlet.
IMPORTANT! If you change COMPACT Unit to the left-
hand version, you must move the pressure adjusting plate
(must always be situated in the extract air inlet).
Connect a pressure gauge to the pressure measurement
tappings of the unit. The COMPACT Unit has four pressure
measurement tappings. Use the two tappings nearest the
extract air duct! See illustration. The COMPACT Top has
two pressure measurement tappings. See illustration. The
blue pressure measurement tapping is used for measur-
ing the negative pressure in the extract air section and the
white pressure measurement tapping is used for measur-
ing the negative pressure in the supply air section.
Note that both pressure measurement tappings are used
for measuring negative pressure.
MEASURED VALUES
The negative pressure in the extract air section should be
greater or the same as the negative pressure in the supply
air section.
If the negative pressure in the extract air section is the
same or up to 20 Pa greater than the negative pressure
in the supply air section, then you’ve finished this adjust-
ment.
DEVIATIONS
If the negative pressure in the extract air section is less
than that in the supply air section, the adjustment plate
must be readjusted as follows:
1. Stop the air handling unit, open the inspection door
and slightly close the adjustment plate in the air han-
dling unit’s extract air inlet.
3. Close the inspection door and restart the unit.
4. Measure the pressures.
Repeat this procedure until the negative pressure in
the extract air section is the just as high or up to 20 Pa
higher than the negative pressure in the supply air sec-
tion (0–20 Pa).
5. If the negative pressure in the extract air section is
higher than 20 Pa compared to the supply air section,
although the adjustment plate is completely open, the
leakage and purging air flow will be more than antici-
pated. This means that the actual extract air flow will
deviate from the preset extract airflow. The deviation
increases as the pressure differential increases.
- (blue)
+ (White)

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14 www.swegon.com
Position indicator
5 HAND-HELD MICRO TERMINAL
AND HOW TO USE THE MENUS
5.1 HAND-HELD MICRO TERMINAL
5.1.1 General
The hand-held micro terminal consists of an encapsulated
control box with a 3-metre long cable for connection to
the air handling unit by means of a quick connector.
The hand-held terminal has an illuminated display, 6 push-
buttons and a red LED for indicating alarms.
5.1.2 Buttons
The buttons have the following functions:
ENTER confirms your selection and proceeds to next
menu level.
ESCAPE reverts to the previous menu.
ADVANCE UPWARD or to the LEFT.
ADVANCE DOWNWARD or to the RIGHT.
DECREASES the value of the highlighted setting.
INCREASES the value of the highlighted setting.
5.1.3 Display Screen
The display screen has 4 lines. Many of the menus howe-
ver have several lines and these are shown line for line as
you press the ADVANCE DOWNWARD button. The posi-
tion indicator shows where you are in the menu.
5.1.4 Abbreviations
The following abbreviations are used in the menus
SA = Supply air (E.g. SA FAN = Supply air fan)
EA = Extract air
OUTD = Outdoor air
FV = Anti-frosting monitor
HEAT EXCH = Heat exchanger
COMPACT-U TUE 14:40
STOP
MANUAL OPERATION
STOP?
MAN/AUTO.OP
SETTINGS
COMPACT-U TUE 14:40
STOP
MANUAL OPERATION
STOP?

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5.2 Menu tree
MAIN
MENU
(Section 6)
USER LEVEL
(Section 7)
INSTALLATION LEVEL
(Section 8-16)
COMPACT-U TUE 14:40
STOP
MANUAL OPERATION
STOP?
COMPACT-U TUE 14:40
MANUAL OPERATION
STOP?
MAN/AUTO.OP
COMPACT-U TUE 14:40
STOP?
MAN/AUTO.OP
SETTINGS
TEMPERATURE
FLOW/PRESSURE
SWITCH CLOCK
FILTERS
AIR ADJUSTMENT
ALARMS
INSTALLATION
AUTO OPERATION
MANUAL LOW SPEED
MANUAL HIGH SPEED
*SWITCH CLOCK*
TIME/DATE
TIME CHANNEL
YEAR CHANNEL
*FILTERS*
READINGS
CALIBRATION
*AIR ADJUSTMENT*
LOCKS FAN SPEED
TIME SETTING: 0 h
*ALARMS*
ACTIVE ALARMS
ALARM HISTORY
*FLOW/PRESSURE*
READINGS
SETTINGS
Important! The appearance of
the menus varies depending
on the type of air handling
unit and functions selected.
*TEMPERATURE*
READINGS
SETTINGS
ALL YEAR COMFORT
*ALL YEAR COMFORT*
READINGS
SETTINGS

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COMPACT-U TUE14:40
STOP
MANUAL OPERATION
STOP?
COMPACT-U TUE14:40
MANUAL OPERATION
STOP?
MAN/AUTO.OP
AUTO OPERATION
MANUAL LOW SPEED
MANUAL HIGH SPEED
COMPACT-U TUE14:40
STOP?
MAN/AUTO.OP
SETTINGS
USER LEVEL
INSTALLATION LEVEL
6 MAIN MENU
6.1 General
The main menu is normally shown if no other menu
has been selected.
The display automatically returns to the main menu
after 30 minutes.
The content in the menu changes depending on the
operating mode selected other functions that affect
the present operating mode and possible tripped
alarms.
6.2 Selection of Language
When the air handling unit is started up for the first
time, a language selection menu is displayed.
Select the language desired.
If you want to change language at a later oppor-
tunity – or if you’ve selected the wrong language
– you can change the language at INSTALLATION
LEVEL under HAND TERMINAL. See Section 14.1.
6.3 Changing Operating Mode
You can start and stop the air handling unit or
change over to manual or automatic operation
from the main menu.
The air handling unit should normally be
started and stopped from the hand-held
micro terminal; not by switching the safety
isolating switch on and off.
When the air handling unit is started up, menus
for the various delays that are part of the starting
sequence are shown.
See also Section 10.1.1, Starting Sequence.
6.4 Settings
When selecting SETTINGS in the main menu, you
will advance to User Level and Installation Level.
See Section 7.

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X = Extract air temperature °C
ERS Regulation 1
15
10
20
15 20
25
Step 1
Step 2
Step 3
Step 4
1
2
3
15
20
22
9
10
12 15 20 25 27
Y = Supply air temperature setpoint °C
ERS Regulation 2
7 USER LEVEL
7.1 Temperature
The basic functions can be preset at INSTALLATION LE-
VEL and the values can be read and set at USER LEVEL.
See also Section 9.2 in which the functions for
temperature are described in detail.
IMPORTANT! If you intend to substantially alter the tempera-
ture settings, you should first stop the air handling unit before
doing so.
7.1.1 Readings
Used for checking the performance.
7.1.2 Settings
ERS REGULATION 1
The control unit regulates the relationship between the supply
air and the extract air temperatures according to a factory
preset curve.
Settings (see the chart to the right as well):
Value Setting Factory
range settings
Step 1 - 4 1
EA/SA Differential 1-5 °C* 2 °C
Breakpoint (refers to 15-23 °C* 20 °C
extract air temperature)
ERS REGULATION 2
The control unit regulates the relationship between the supply
air and extract air temperatures according to a custom-plotted
curve. The curve has three adjustable breakpoints.
Settings (see the chart to the right as well):
Value Setting Factory
range settings
Extract air temperature
X1 10-40 °C 15 °C
X2 10-40 °C 20 °C
X3 10-40 °C 22 °C
Supply air temperature
Y1 10-40 °C 20 °C
Y2 10-40 °C 18 °C
Y3 10-40 °C 14 °C
SUPPLY AIR REG.
Settings:
Value Setting Factory
range settings
Supply air temperature
setpoint 15-40 °C* 21.5 °C
EXTRACT AIR REG.
Settings:
Value Setting Factory
range settings
Extract air/room temp.
Setpoint 15-40 °C* 21.5 °C
Min. supply air temperature 13-25 °C* 15 °C
Max. supply air temperature 18-45 °C* 28 °C
*) The setting range can be changed. See 14.3, Min/Max
Adjustment.
Extract air temperature °C
Supply air temperature setpoint °C
Breakpoint
EA/SA differential
TEMPERATURE
*TEMPERATURE*
READINGS
SETTINGS
*TEMPERATURE*
READINGS
SETTINGS
ERS REGULATION 1
ERS REGULATION 2
SUPPLY AIR REG.
EXTRACT AIR REG.
Important! The
appearance of the
menus varies depending
on the type of air
handling unit and
functions selected.

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Min/Max Airflows
AIRFLOW MIN FLOW
COMPACT UNIT
AND COMPACT TOP
MAX FLOW
COMPACT UNIT
AND COMPACT TOP
SIZE m3/h * m3/s m3/h m3/s
02 300 0,08 800 0,23
03 300 0,08 1300 0,36
7.2 Air flow/Pressure
Basic functions are set at INSTALLATION LEVEL
and values are read and set at USER LEVEL.
Therefore see also Section 9.3, in which the func-
tions for flow/pressure are described in detail.
7.2.1 Readings
Used for performance checks.
7.2.2 Settings
The functions selected at INSTALLATION LEVEL and the
min. and max. airflows of each unit size (see the table
below) determine which values can be set.
Values for airflow (l/s, m3/s, m3/h), pressure (Pa) or input
signal strength (%) can be preset depending on the func-
tion selected.
LOW SPEED
Must always be preset! The value for low fan speed can-
not be higher than the value for high speed. Low speed
can be set to 0, which means that the fan is standing still.
HIGH SPEED
Must always be preset! The value or pressure for high fan
speed cannot be lower than the value for low fan speed.
MAX SPEED
Max speed is only appropriate for functions such as pres-
sure regulation, Heating BOOST or Cooling BOOST. The
value for max fan speed cannot be lower than the value
for high fan speed.
MIN/MAX SPEED
Min/max fan speed is only appropriate for demand-con-
trolled operation. The lowest and highest permissible
flows are preset for each of the fans. This means that the
fans will not operate outside these limits, regardless the
load.
AIR FLOW/PRESSURE
*FLOW/PRESSURE*
READINGS
SETTINGS
*FLOW/PRESSURE*
READINGS
SETTINGS
LOW SPEED
HIGH SPEED
MAX. SPEED
MIN/MAX. SPEED
* When entering settings, round off the values to the nearest
adjustable step.

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7.3 Switch clock
Basic functions for the switch clock can be preset
at INSTALLATION LEVEL under FUNCTIONS/OPERA-
TION and the values can be read and set at USER
LEVEL.
TIME/DATE
The current date and time can be set and adjusted whenever
required.
The switch clock automatically takes leap years into considera-
tion.
Automatic changeover between summer time/winter time to EU
Standard has been preset.
This changeover function can be blocked at INSTALLATION LEVEL
under FUNCTIONS/OPERATION.
TIME CHANNEL
Times and days can be set when the unit is to run at high speed,
low speed or be stopped.
Eight different time channels can be set. If the same in-operation
times are to apply every day of the week (Mon-Sun), you need
only program one time channel. Different operation times for
each day of the week can be programmed by programming a
time channel for each day (Mon-Fri, Sat-Sun or Mon, Tues, Wed,
etc)
The time can be set as 00:00-00:00 if the deviating in-operation
period is desirable for the entire 24 hours period.
YEAR CHANNEL
The year channels make it possible to set deviating in-service
times for parts of the day during certain parts of the year. Eight
different year channels (yearly time schedules) can be set. The
year channels over-modulate the time channel during the hours
of the day and the days that the year channel is active. The year
channel dates indicate the dates between which the year chan-
nel shall apply and the year channel hours indicate the hours of
the day between which the year channel will steer the controller
to operate the rotary heat exchanger at a specified speed. Other
times within the year channel still apply to that time channel.
The time can be set as 00:00-00:00 if the deviating in-operation
period is desirable for the entire 24 hours period.
Functions for summer night cooling, prolonged operation, etc.,
operate also when the year channel is active.
7.4 Filters
(and anti-frosting function of rotary heat exchanger)
There are two types of filter monitoring:
Calculated filter monitoring (preset at factory) monitors the fan’s
speed increase conditional on the degree of fouling in the filter.
The calibration involves taking airflow and fan speed readings.
An alarm is initiated when the fan speed has increased by 10%
above the preset alarm limit.
Filter monitoring with a pressure sensor (accessory) measures
the pressure drop across the filter. The alarm limit is preset in Pa.
7.4.1 Readings
When reading the filter status, the first value shows current value
and the second value shows current alarm limit.
7.4.2 Calibration - Filters
The filters should be calibrated for the first time in conjunction
with commissioning, when the duct system, air devices and
eventual adjustment plates have been fitted and adjusted; after
that every time the filter media are changed.
Calibration should be activated for both the supply air and the
extract air if both filters are changed or for only for one airflow
direction if only one filter has been changed.
When filter calibration has been activated, the unit runs at high
speed for about 3 minutes.
After the filter has been calibrated, a speed increase of 10%, or
a pressure rise (= fouling of the filters) of 100 Pa is permissible,
after which an alarm is initiated indicating a fouled filter.
The alarm limit can be changed at INSTALLATION LEVEL under
ALARM SETTINGS.
7.4.3 Calibration - Rotary Heat Exchanger
If the anti-frosting function accessory for heat exchanger is in-
stalled (see 9.6.1.1) calibration can be selected from this menu.
When calibration R-HX is activated the fans are accelerated to
high speed for about 3 minutes.
SWITCH CLOCK
*SWITCH CLOCK*
TIME/DATE
TIME CHANNEL
YEAR CHANNEL
Settings:
Value Setting Factory
range setting
TIME/DATE
Day Mon-Sun Automatic
Time 00:00-23:59 Current
Date Day/Month/Year Current
TIME CHANNEL 1-8
Operation Low speed/High speed* High speed
Time 00:00-23:59 00:00-00:00
Period Not active Not active
Mon, Tues, Wed etc
Mon-Fri
Mon-Sun
Sat-Sun
YEAR CHANNEL 1-8
Operation Not active Not active
Stop/Low sp./High sp.
Time 00:00-23:59 00:00-00:00
Period From Day/Month/Year 01/01/2005
To Day/Month/Year 01/01/2005
*) Shows Stop/Low speed/High speed if this function is selected
at INSTALLATION LEVEL under FUNCTIONS/OPERATION.
FILTERS
*FILTERS*
READINGS
CALIBRATION
*FILTERS*
READINGS
CALIBRATION *FILTER CALIBRATION*
STD.FILTER
PREFILTER
HEAT EXCHANGER

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7.5 Air Adjustment
The speed of the fans can be locked for up to 72 hours.
This is practical when making air adjustments in the duct
system and air devices.
The period desired is preset but can be interrupted earlier
by selecting STOP in the menu or by changing the time
setting to 0.
7.6 Alarms
If an alarm is initiated, this is shown in the hand-held ter-
minal both as clear text and by a blinking red diode.
This menu enables you to read alarms quickly.
ACTIVE ALARMS
Shows alarms that are active but have not initiated an
alarm signal in the display. This applies to alarms that have
a long delay, i.e. airflow or temperature alarms.
ALARM HISTORY
The 10 most recent tripped alarms are shown.
Alarm settings can be entered at INSTALLATION
LEVEL under ALARM SETTINGS.
For complete description of alarms, see Section 18.
AIR ADJUSTMENT
*AIR ADJUSTMENT*
LOCKS FAN SPEED.
TIME SETTING: 0 h
ALARMS
*ALARMS*
ACTIVE ALARMS
ALARM HISTORY