Carrier 30PA 90 Manual

INSTALLATION, OPERATION AND
MAINTENANCE INSTRUCTIONS
Translation of the original document 80057, 09.2018
Ductable air-cooled scroll chillers
30PA 90-180
Nominal cooling capacity 17 - 36 kW

2
CONTENTS
1 - INTRODUCTION............................................................................................................................................................................3
2 - SAFETY ADVISE...........................................................................................................................................................................3
3 - OPERATION LIMITS....................................................................................................................................................................4
4 - AVAILABLE CONFIGURATIONS..................................................................................................................................................4
5 - UNIT IDENTIFICATION .................................................................................................................................................................5
6 - TRANSPORT AND HANDLING ....................................................................................................................................................5
Transport ...................................................................................................................................................................................... 5
Discharging of the unit..................................................................................................................................................................5
Placement on site ......................................................................................................................................................................... 6
7 - LOCATION AND ASSEMBLING ...................................................................................................................................................6
Location designation..................................................................................................................................................................... 6
Centre of gravity coordinates........................................................................................................................................................6
Minimum free space for commissioning and maintenance operations.........................................................................................6
Anchorage for silent-blocks ..........................................................................................................................................................7
Sound level................................................................................................................................................................................... 7
8 - CHECKING BEFORE COMMISSIONING.................................................................................................................................. 8
Electrical connections................................................................................................................................................................... 8
Checks in the centrifugal fan: STD version...................................................................................................................................9
Checks on the plug-fan: HEE version...........................................................................................................................................9
Air ducts connections..................................................................................................................................................................10
Hydraulic connections................................................................................................................................................................. 11
Condensate drain connection.....................................................................................................................................................14
9 - OPTIONS .....................................................................................................................................................................................14
Condensation pressure control...................................................................................................................................................14
Air filter........................................................................................................................................................................................ 15
Cooling recovery circuit ..............................................................................................................................................................15
10 - SAFETY ELEMENTS.................................................................................................................................................................17
Location of the control and safety elements ............................................................................................................................... 17
11 - COMMISSIONING....................................................................................................................................................................18
Checks prior to commissioning...................................................................................................................................................18
Possible problems at commissioning..........................................................................................................................................19
Operational checks..................................................................................................................................................................... 20
12 - MAINTENANCE .......................................................................................................................................................................20
13 - CONTROL AND ANALYSIS OF BREAKDOWNS.................................................................................................................23
14. FINAL SHUTDOWN ....................................................................................................................................................................24
Shutting down............................................................................................................................................................................. 24
Recommendations for disassembly............................................................................................................................................24
Fluids to be recovered for treatment...........................................................................................................................................24
Materials to be recovered for recycling.......................................................................................................................................24
Waste electrical and electronic equipment (WEEE) ................................................................................................................... 24
ANNEX I: QUICK OVERVIEW OF THE INSTALLATION.................................................................................................................25

3
1 - INTRODUCTION
The 30PA cooling only are compact outdoor air/water units.
Available in two versions:
• STD (Standard)
• HEE (High Energy Efficiency)
These units have been made for operation indoor, o󰀨ers an optimal
solution for all process cooling applications.
They are equipped with centrifugal fan (STD version) or
electronic plug-fan (HEE version), plate exchanger, hermetic
scroll compressor, and electronic control with microprocessor,
components optimised for the R-410A refrigerant.
The entire range also has the option to include a desuperheater
circuit that allows for the production of hot water at a temperature
greater than in the condensation circuits.
After manufacturing, all units are charged with refrigerant
and are tested at the factory, verifying the correct operation
of all their components within the operating range for which
they are intended.
■The units comply with European Directives:
- Machinery Directive 2006/42/EC (MD)
- Electromagnetic Compatibility Directive 2014/30/EU (EMC)
- Low Voltage Directive 2014/35/EU (LVD)
- Pressure Equipment Directive 2014/68/EU (Category 2)
(PED)
- RoHS Directive 2011/65/EU (RoHS)
- Eco-design Directive 2009/125/EC (ECO-DESIGN)
- Energy Labelling Directive 2017/1369/EU (ECO-
LABELLING)
- Harmonised Standard: EN 378-2:2012 (Refrigerating systems
and heat pumps - Safety and environmental requirements).
Technicians who install, commission, operate and service the unit
must possess the necessary training and certifications, understand
the instructions given in this manual and be familiar with the
specific technical characteristics of the installation site.
2 - SAFETY ADVISE
To avoid any risk of accident during installation, commissioning
or maintenance, it is obligatory to take into consideration the
following specifications for the units: refrigerated circuits under
pressure, refrigerant presence, electrical voltage presence and
implantation place.
Because of all of this, only qualified and experienced personnel
can perform maintenance tasks or unit repairs.
It is required to follow the recommendations and
instructions in this brochure, the labels, and the specific
instructions.
Compliance with the norms and regulations in e󰀨ect is
mandatory. It is recommended to consult the competent
authorities regarding the applicable regulations for
users of units or components under pressure. The
characteristics of these units or components are included
on the plates of characteristics or in the regulatory
documentation provided with the product.
In case of a leak:
■Toxicity: According to EN 378-1, R-410A belongs to the A1/
A1 group, i.e. with high safety both in the mix and also in the
case of a leak.
■Although it is not toxic, in case of a leak to atmospheric pressure
the liquid phase evaporates. The resulting vapours are still
hazardous because they are heavier than air and can force
the latter out of the machine rooms. If refrigerant is accidentally
released, ventilate the room with fans.
■Although it is not flammable, keep them away from open
flames (e.g. cigarettes) as temperatures of over 300°C cause
their vapours to break down and form phosgene, hydrogen
fluoride, hydrogen chloride and other toxic compounds. These
compounds may produce severe physiological consequences
if accidentally inhaled or swallowed.
■To detect leaks, an electronic leak detector, an ultraviolet lamp
or soapy water must be used . Flame detectors do not help.
■Immediately repair any refrigerant leak, using a recovery unit
specific for R-410A that avoids a possible mixture of refrigerants
and/or oils.
The compressor and line surfaces can reach temperatures
above 100ºC causing burns to the body. In the same
fashion, under certain conditions these surfaces can
reach very cold temperatures that can cause freezing
risks.
During any handling, maintenance or service operations,
the technicians involved must be equipped with safety
gloves, glasses, shoes, insulating clothing, etc
Caution: Before intervening in the unit, verify that the
main power to the unit is cut o󰀨. An electric shock can
cause personal damage. The main disconnect switch is
located in the unit’s electrical cabinet.
Components of the R-410A R-32 R-125
Chemical formula CH2F2 CHF2CF3
Weight ratio 50% 50%
Unitary global warming potential (GWP) 675 3.500
Global warming potential (GWP) 2.088
Ensure that refrigerant is never released to the atmosphere when
the equipment is installed, maintained or sent for disposal.
It is prohibited to deliberately release refrigerant into the
atmosphere. The operator must ensure that any refrigerant
recovered is recycled, regenerated or destroyed.
The operator is bound by the obligation to perform periodical
sealing tests on the refrigerating circuit according to the regulation
(EU) No.517/2014. Please, consult the frequency of tests in
chapter of “Maintenance”.
Refrigerant
Important: These units contain R-410A, a fluorinated greenhouse
gas covered by the Kyoto protocol.
All interventions on the refrigerating circuit must be performed in
accordance with applicable legislation. Within the European Union,
it is necessary to observe regulation (EU) No.517/2014, known as
F-Gas, over Certain greenhouse effect fluoride gases.

4
4 - AVAILABLE CONFIGURATIONS
According to the air supply:
■Assembly M00
HORIZONTAL air supply.
■Assembly M01
VERTICAL air supply.
According to the type of supply fan:
■STD version (Standard):
Centrifugal fan coupling by pulleys and belts.
■HEE version (High Energy Efficiency):
Variable speed electronic plug-fan.
M00
M01
STD
HEE
3 - OPERATION LIMITS
With control of the condensation pressure operating up to -15ºC.
Minimum outlet temperature. With the option of glycol water for
lower temperature operation from 5ºC to -7ºC.
Series
Cooling mode
Air Water (outlet T.)
Max. Min. Max. Min.
30PA 46ºC 12ºC 18ºC 5ºC 
+18+5
0-7
-15
+46
+12
Outdoor temperature °C DB
Mandatory glycol
Outlet water temp. in the evaporator °C
Condensation
pressure control

5
6 - TRANSPORT AND HANDLING
■Discharge via forklift truck:
The unit is designed to be transported safely by using a forklift
truck. The forks of the forklift truck must come in on the side of
the unit, ensuring that the centre of gravity of the unit remains
within the forks, because a misbalance in the transport may
cause the unit to turn over and fall from the forklift truck.
Transport
The unit must be handled with care to avoid transport damage.
Thus we recommend:
■Do not dispose of the transport supports or the packaging
materials until the unit is in its final location.
■For transport in a container, one must be selected that has an
easy load and unload to the installation location.
Discharging of the unit
The unit can be discharged using a forklift truck or a crane with a
rocker arm and cloth slings.
Any handling of the unit by other means or by gripping points
di󰀨erent from those described here may be dangerous for both
the unit and the personnel who are carrying out the discharging
or transport work.
Always check the weight of the set and verify that the discharging
method used is approved for handling that weight.
Note: please see the weight and the gravity centre
coordinates of each model stated in the following section.
The recommended length for the forks will be bigger than the
unit width, so that the entire weight-bearing structure can be
supported on the forklift truck. This also prevents the possible
introduction of the truck’s fork into functional parts of the unit
that may cause damage to the unit.
The standards and recommendations of the forklift truck must
also be respected with regards to the maximum load, inclination
of the panel, elevation of the load for transport, and, in particular,
the maximum speed.
■Discharge via crane:
A rocker arm, as well as approved cloth slings, both suitable for
the dimensions and weight of the unit, must be used in order
to carry out the work safely and without causing damage to the
units or to workers.
These slings will be hooked to the two mounting holes located
on each crossbar. Make sure that the unit is protected from
contact with the hooks to prevent damage to the housing.
The unit must be lifted and fixed with care, with
maximum inclination of 15º, since it could harm its
operation. Do not raise by points outside of those
specified here.
5 - UNIT IDENTIFICATION
Important: The serial number must be used in all
correspondence regarding the unit.
Ref\Reference No Serie\serial Nbr.Año\An.Year
Producto\Product\Produit
Ref. Produit\Item Nbr
Max.Intensidad\Intensité\CurrentKit Elec.Tension\Voltage
Refrig.KG (Fábrica\Factory\Usine)/Co2 Teq.Refrigerant
NoBoPeso\Poids\WeightPSmax(AP\HP) Temp. Max./ IPPSmax(BP\LP)
Fabricante\Fabricant\Manufacturer:
Compañía Industrial de Aplicaciones Térmicas, S.A.
P. Ind. Llanos de Jarata s/n. 14550 Montilla-SPAIN
Contient des gaz à effet de serre fluorés \ Contains fluorinated greenhouse gases regulated by the Kyoto protocol
Contiene gases fluorados de efecto invernadero regulados por el protocolo de Kyoto
CARRIER SCS
Route de Thil
01122 Montluel-FRANCE
1
16
23
4
56 7
8 9 10
11 12
13 14 15 17
Legend
1Year of manufacture
2Commercial product name
3Serial number
4Description of the product
5Purchase order number
6Sales order number
7Work order number
8Power supply
9Power output of the auxiliary electrical heaters kit (optional)
(kW)
10 Maximum absorbed current under full load (A) ( including
the electrical kit)
11 Type of refrigerant
12 Refrigerant content (kg) and Environment impact (CO2Teq.)
13 Maximum service pressure in the high pressure side (R-410A
= 42 bar)
14 Maximum service pressure in the low pressure side (R-410A
= 24 bar)
15 Maximum operating temperature (refer to “Operation limits”)
Maximum shipment and storage temperature: +50ºC
Electrical protection rating: IP54
16 Operation weight (kg) (empty weight + fluid + refrigerant)
17 Notified Body number for surveillance of the Pressure
Equipment Directive
Markings (name plate, punch marks, labels) must remain visible.
They must not be altered, removed or modified.
Check the unit for any damage or missing components upon
delivery.
Check that the details on the label, the packing and the name
plate match the order. If equipment has been damaged, or there
is a shortfall in delivery, notify accordingly.
All units bear, legibly and indelibly, a name plate located in a prime
space, as appears in the attached image: Check that this plate
matches the correct model.

6
Centre of gravity coordinatesPlacement on site
Once the unit is discharged, it must be freed from the transport
supports so that the inserts available for the silent-blocks can be
accessed.
Each support is fixed to the crossbar using 2 M4 screws.
M4 screws for
fixing the support
Mounting
hole
Location designation
Before moving the unit, it must be checked that all panels are
fastened in place. Lift and lower with care.
When choosing the location, whatever may be the selected fashion,
the following precautions have to be taken into consideration:
■It is mandatory to comply with norm EN 378-3 on Safety and
Environmental Requirements. Part 3: “In situ” installation and
protection to people.
■The area where the unit will be located must be perfectly accessible
for cleaning and maintenance operations (check minimum free
space for maintenance). Leave enough space for air circulation
around the unit.
■Check that the unit is perfectly levelled.
■It is necessary to check that the surface of the floor or the
structure supports the weight of the unit (please, consult the
weight of the unit in the section “Anchorage for silent-blocks”).
■Foresee appropriate damping devices in all the installation so
that noise and vibration transmission is avoided (refer to the
“Anchorage for silent-blocks”).
In the event of assembling directly on silent-blocks to the
ground, it is recommended that a template of the unit’s footprint
with the anchoring points of the silent-blocks be made.
With the help of the crane or the forklift truck, the unit will be
raised to a su󰀩cient height that the silent-blocks can be screwed
into its base. The 4 silent-blocks must remain oblique and the
interiors perpendicular to the unit.
M10 metric threads have been provided for their placement in
the supports indicated in the following section “Anchorage for
silent-blocks”. A hex key 17 or Allen wrench 8 will be used for
this operation based on the
type of screw used.
This image shows how the
silent-block option that can be
supplied for this unit is fixed
to the unit.
7 - LOCATION AND ASSEMBLING
Minimum free space for commissioning and
maintenance operations
1m 1m
0,5m A
30PA
A (m)
90STD to 100STD 1,2
120STD to 180STD 1,5
30PA
A (m)
90HEE 1,2
100HEE to 120HEE 1,5
160HEE to 180HEE 1,2
30PA
Centre of gravity
(mm) Weight
empty
(kg)
XYZ
90STD 453 384 528 302
100STD 488 398 576 310
120STD 625 399 676 372
160STD 619 400 666 390
180STD 625 397 674 388
90HEE 502 422 614 294
100HEE 569 417 673 351
120HEE 628 426 742 368
160HEE 940 435 573 450
180HEE 936 434 579 455
Since it is an unit designed to work indoors, some specific
installation norms must be followed:
■Ensure that the location of the supply and return grilles does
not generate air recirculation.
■Check that there are no obstructions in the air supply and return
grille slats due to being tightly closed
6 - TRANSPORT AND HANDLING

7
Anchorage for silent-blocks
Note: all the anchorings are bolt and nut type.
30PA
Distances (mm) Reactions in the supports (kg)
ABC
Weight in
service R1 R2 R3 R4
90STD 896 760 65 306 66 101 87 52
100STD 896 760 65 315 69 93 84 60
120STD 1166 760 65 379 89 112 101 77
160STD 1166 760 65 397 92 119 107 79
180STD 1166 760 65 396 93 119 105 79
90HEE 896 760 65 298 64 100 85 50
100HEE 1166 760 65 358 63 127 116 52
120HEE 1166 760 65 376 88 112 100 77
160HEE 1892 760 65 465 69 177 163 56
180HEE 1892 760 65 468 71 178 163 56
Sound level
These units have been designed to operate with a low sound level.
In any case, in the design of the installation, it must be taken into
consideration: the outdoor environment for the acoustic radiation,
the type of building for the noise transmitted in the air and the solid
elements for the vibration transmission.
To reduce the transmissions through solid matter to the maximum,
we recommend installing damping devices between the floor or
structure and the frame of the unit and flexible connections in the
hydraulic tubes.
If necessary, an acoustic technician must commission a study.
Sound pressure level
Measurement conditions: in a clear field, measured at a distance
of 10 metres, directivity 2 and at 1,5 metres from the ground.
Note: The sound pressure level depends on the installation
conditions and, as such, is only indicated as a guide. Values
obtained according to standard ISO 3744.
Radiated sound power level
Measurement conditions: ducted discharge and return. For nominal
operating conditions EN 14511 – Acoustic power reference: 10E-12
W, tolerance of ±2 dB (partial charge of ±4 dB).
Note: The unit has acoustic insulating cover for compressor (Low
Noise version).
30PA STD version
90STD 100STD 120STD 160STD 180STD
63 Hz dB(lin) 73,8 74,2 74,4 74,4 74,4
125 Hz dB(lin) 73,2 73,6 73,8 73,8 73,8
250 Hz dB(lin) 70,2 70,6 70,8 70,8 70,8
500 Hz dB(lin) 65,3 65,7 65,9 65,9 65,9
1000 Hz dB(lin) 63,0 63,4 63,6 63,6 63,6
2000 Hz dB(lin) 62,2 62,6 62,8 62,8 62,8
4000 Hz dB(lin) 58,2 58,6 58,8 58,8 58,8
8000 Hz dB(lin) 49,3 49,7 49,9 49,9 49,9
Total dB(A) 69,4 69,8 70,0 70,0 70,0
30PA HEE version
90HEE 100HEE 120HEE 160HEE 180HEE
63 Hz dB(lin) 71,1 73 73,1 73,1 73,1
125 Hz dB(lin) 70,9 72,8 72,9 72,9 72,9
250 Hz dB(lin) 67,5 69,4 69,5 69,5 69,5
500 Hz dB(lin) 65,4 67,3 67,4 67,4 67,4
1000 Hz dB(lin) 62,4 64,3 64,4 64,4 64,4
2000 Hz dB(lin) 59,5 61,3 61,5 61,5 61,4
4000 Hz dB(lin) 56,5 58,4 58,5 58,5 58,5
8000 Hz dB(lin) 49,4 51,3 51,4 51,4 51,4
Total dB(A) 68,0 69,9 70,0 70,0 70,0
30PA STD version
90STD 100STD 120STD 160STD 180STD
Total dB(A) 38,0 38,4 38,4 38,4 38,4
30PA HEE version
90HEE 100HEE 120HEE 160HEE 180HEE
Total dB(A) 36,6 38,3 38,4 38,4 38,4
Ducted sound power level
Measurement conditions: ducted discharge and return. For nominal
operating conditions EN 14511 – Acoustic power reference: 10E-12
W, tolerance of ±2 dB (partial charge of ±4 dB).
30PA STD version
90STD 100STD 120STD 160STD 180STD
Total dB(A) 83,0 84,0 84,0 84,0 84,0
30PA HEE version
90HEE 100HEE 120HEE 160HEE 180HEE
Total dB(A) 82,0 84,0 84,0 84,0 84,0
7 - LOCATION AND ASSEMBLING

8
8 - CHECKING BEFORE COMMISSIONING
Electrical connections
NOTE: Under no circumstance should the unit be started without having read the brochure completely.
30PA electronic control
The 30PA control is basically comprised of a PC SMALL control
board, a pGD1 graphic terminal, a TCO user terminal (optional for
remote control) and sensors.
■Main functions:
- Permanent control and optimization of the operating
parameters
- Safety management.
- Timing of the compressor.
- Control of condensation and evaporation pressures.
- Control of outdoor electronic plug-fan (HEE version).
- Control of the circulation pump.
- Regulation of the water outlet temperature.
- Compensation of the setpoint based on the outdoor
temperature.
- Timer and weekly programming.
- Failure diagnosis and main alarm.
■pGD1 terminal:
This graphic terminal, installed on the electric panel of the
machine, allows:
- The initial programming of the unit
- Modification of operating parameters.
- Unit ON / OFF.
- Selection of the operating mode.
- Setting of setpoints.
- On-screen display of controlled variables and sensor values
measured.
- On-screen display of active alarms and historical record of
alarms.
■TCO user terminal (optional for remote control):
The TCO user terminal, for remote control, allows:
- Modification of some operating parameters.
- Unit ON / OFF.
- Selection of the operating mode and setting of setpoints.
- On-screen display some controlled variables and probe
values.
- On-screen display of alarms codes.
Installation norms
In order to establish the unit's electric power supply (cable inlet,
calculation of the lead section, protections etc.), refer to:
■The information supplied in this document (table of technical
characteristics).
■Data plate.
■The wiring diagram and the legend supplied with the unit.
■The electronic control brochure which is supplied with the unit.
■The regulations and norms in force which regulate the
installation of air-conditioning units and electric receivers.
The electric power supply of the unit must be sized in accordance
with the maximum power input by the unit taking into account all
the options it features (if necessary, refer to the technical brochure).
Verify that electrical power corresponds to the one on the data
plate and that the voltage remains constant.
Check that the electrical connections are correct and
tight (an electrical diagram is included with each unit,
along with its legend).
Note: All connections in the site are the responsibility
of the installer. These connections are always made as
per the current regulation.
To prevent electrical shocks, make all electrical
connections before energizing the unit. Check that the
automatic switch is closed. Omitting this can cause
personal damage. Make the ground connection before
any other electrical connection.
The installer must fix line protection elements according
to the e󰀨ective legislation.
Collapsible
polycarbonate
window for
access to the
pGD1 terminal
Door
switch
Electric
panel
Options
for outlet from
the electrical
power supply

9
8 - CHECKING BEFORE COMMISSIONING
Pulleys must stay on the same planeTensor screw
Pulley
screws
Taper
pin
Pulley and belt calibration
Attention: Before performing these operations, it is necessary to
verify that the unit is disconnected from mains.
The centrifugal motorfans are coupled through pulleys and belts.
In these fans, the following must be taken into consideration:
Pulley alignment:
■The pulleys must be on the same plane, so it is important to
check them with the help of a ruler or a laser aligner.
■In case they are not aligned, remove the pulley screws, and
after removing the taper pin, the set of pulley and taper can be
slided over the axis (this action can be performed both in the
motor as well as in the fan).
Belt tension:
After fixing the pulleys on the same plane, the belt tension is made
by tightening the tensor screw.
Excessive tension on the belt can lead to premature wear on the
assembly. Insu󰀩cient belt tension can cause slippage, overheating
and premature wear of the belt.
It is essential to tension the belts using the “Deflection test”
described below:
■The belt tension must be checked and corrected using a suitable
measuring instrument (tensiometer or dynamometer)
■“Ea” calculation:
- Ea = (e x E)/100 = deformation in mm for a pulley centre
distance of 100 mm
- e = pulley centre distance in mm
- E = see table below for the value
- f = force applied
■At the centre of the centre distance “e”, apply a force “f”, as
determined in the table below, to each belt. Set the belt tension
to obtain the calculated deflection “Ea”.
Belt
type f(N) d (mm) 
E
(mm)

SPZ 25
56 71 2.45
< 71 90 2.20
< 90 125 2.05
125 1.90
Important: During commissioning, the belt tension must be
checked after 48 hours of operation.
The belt tension must be checked in all cases and before system
start-up.
  Load to be applied per belt f (N)
  Small pulley diameter (mm)
  Belt deformation for a pulley centre distance of 100 mm - E (mm)
Checks on the plug-fan: HEE version
■Before commissioning, check the blade rotation direction and
that the axis turns without strokes nor vibrations
■Once running, check the operation conditions: pressures, flows
and consumptions.
■The coupling of characteristic curves of the fan and the room
is very important, so that the flows and pressures provided to
the duct network are as required.
Checks in the centrifugal fan: STD version
■Before commissioning, check the blade rotation direction and
that the axis turns without strokes nor vibrations
■Once running, check the operation conditions: pressures, flows
and consumptions.
■The coupling of characteristic curves of the fan and the room
is very important, so that the flows and pressures provided to
the duct network are as required.

10
8 - CHECKING BEFORE COMMISSIONING
Return ducts
M00 asssembly:
Horizontal supply
M01 asssembly:
Vertical supply
HEE version Without filters (mm) With filters (mm)
CDECDE
90HEE 132 903 800 109 903 800
100HEE / 120HEE 132 1183 950 109 1183 950
160HEE / 180HEE 132 1897 800 109 1897 800
STD version Without filters (mm) With filters (mm)
CDECDE
90STD / 100STD 132 903 800 109 903 800
120STD to 180STD 132 1183 950 109 1183 950
Air ducts connections
For units designed for installation indoors with ducted supply and
return in the outdoor circuit, it is advisable to have the following
recommendations:
■Curves in the fan discharge supply must be avoided. It is
recommendable to have a straight section of duct measuring
approximately 1 metre. If it is not possible, they must be as
smooth as possible, using indoor deflectors when the duct is
of large dimensions.
■When making the ducts, direction sharp changes must be
avoided since they can generate occasional pressure drops,
which a󰀨ect the available pressure and the flow. The location
of discharge and aspiration grilles must be studied carefully to
avoid the air recirculation and the transmission and generation
of noises to the interior.
■No matter the type of ducts type to use, these must be insulated
and must not be composed of materials that propagate fire nor
expel toxic gases in the event of a fire. The internal surfaces
must be smooth and should not pollute the air that circulates
within them. In any case, the e󰀨ective legislation about this
issue must be respected.
■Flexible connections must be made between the ducts and the
unit that avoid the noise and vibration transmission.
Flexible connections
Optionally, these units can be sent with flexible connections for
supply and return air.
In case of asking together for flexible connections and damper
for condensation pressure control (optional for version STD),
discharge flexible ducts are attached to the above mentioned
damper.
If it is removed the damper for installation on duct, it is necessary
to maintain the frame for reconnecting the flexible connections.
Supply ducts
STD version
Without damper 
M00 dimensions (mm) M01 dimensions (mm)
ABCABC
90STD / 100STD 859 407 132 552 430 152
120STD to 180STD 1139 481 132 652 552 152
HEE version M00 dimensions (mm) M01 dimensions (mm)
ABCABC
90HEE 859 407 132 633 589 132
100HEE / 120HEE 1139 481 132 817 639 132
160HEE / 180HEE 1854 407 132 1619 590 132
STD version
With damper 
M00 dimensions (mm) M01 dimensions (mm)
ABCABC
90STD / 100STD 859 407 132 513 391 132
120STD to 180STD 1139 481 132 613 513 132
 Damper for condensation pressure control (optional): add the
height of the damper to the flexible duct.