Carrier 42Vmc Users Manual

42VMC to the manual 9f948fb9-7eb6-44a2-8dc7-b4c8d2858913

2015-01-24

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42VMC
Console
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SI
ISO 9001
INSTALLATION MANUAL
42VMC
Split system “Console night & day” indoor unit
GB - 1
ENGLISH
The operation and maintenance instructions for the indoor unit and the installation instructions
for the indoor and the outdoor unit are given in the manuals for each unit. These are supplied
with the unit.
Contents
Page
Dimensions and weight............................................................................... 2
Nominal data............................................................................................... 2
Minimum clearances................................................................................... 2
Connections................................................................................................ 3
Material supplied ........................................................................................ 3
Operating limits........................................................................................... 3
General information .................................................................................... 4
Warnings: avoid .......................................................................................... 5
Installation .................................................................................................. 6/7
Refrigerant connections ............................................................................. 8
Electrical connection .................................................................................. 9/11
System configuration .................................................................................. 12
Operating test ............................................................................................. 13
Address selector ......................................................................................... 13
Fault code ................................................................................................... 13
Guide for the owner..................................................................................... 13
Accessories ................................................................................................ 13
Air delivery .................................................................................................. 14
Fresh air renewal ........................................................................................ 14
Cooling only and Power supply
heat pump models
42VMC009
42VMC012
42VMC014 230V ~ 50Hz
42VMC018
42VMC024
42VMC
GB - 2
Dimensions and weights - Minimum clearances (mm)
50 min
500 min
50 min
Dimensions and weights Minimum clearances
Wall installation
Ceiling installation
Model 42VMC009 42VMC012 42VMC014 42VMC018 42VMC024
Amm 850 850 1000 1000 1000
Bmm 540 540 600 600 600
kg
kg 15 16 18 18 20
Table I: Nominal data
•Unit is not suitable for operation in laundry premises.
• For sizing of power supply wires and delay type fuses, refer to
the outdoor unit installation instructions.
POWER INPUT
Cooling only
Cooling Heating
WW
42VMC 009 25 –
42VMC 012 30 –
42VMC 014 55 –
42VMC 018 55 –
42VMC 024 80 –
Heat pump
42VMC 009 25 25
42VMC 012 30 30
42VMC 014 55 55
42VMC 018 55 55
42VMC 024 80 80
B
A200
Ø 80
50
40
42VMC
GB - 3
ENGLISH
Note:
Height difference / Connection length / Pipe bends:
See outdoor unit installation manual.
Connections
햲Outdoor unit
햳Indoor unit
햴Height difference
Table III: Operating limits
Cooling / Heating Refer to outdoor unit installation manual.
Mains power supply Nominal single-phase voltage 230V ~ 50Hz
Operating voltage limits min. 198V – max. 264V
햵Photocatalytic filter
햶Acrylic-fibre filter
햷Condensate drain pipe cover
(use for horizontal installation)
•Drilling template
•Installation manual
•Owner’s manual
•Wireless infrared remote control kit
Table II: Material supplied
햵
햶
햷
햲
햴
햳햲
햳
햴
햳
햲
햴
42VMC
GB - 4
Unit installation
Read this instruction manual thoroughly before starting the
installation.
•This unit complies with low-voltage (EEC/73/23) and electro-
magnetic compatibility (EEC/89/336) directives.
•The installation must be carried out by a qualified installer.
•Follow all current national safety code requirements. In particular
ensure that a properly sized and connected ground wire is in place.
•Check that voltage and frequency of the mains power supply are
those required for the unit to be installed; the available power
must be adequate to operate any other possible appliances
connected to the same line.
Also ensure that national safety code requirements have been
followed for the mains supply circuit.
•The mains supply must be connected as follows:
Models 42VMC 009, 012, 014: to the indoor unit.
Models 42VMC 018, 024: to the outdoor unit.
•Connect indoor and outdoor units with field-supplied copper pipes
by means of flare connections. Use insulated seamless
refrigeration grade pipe only, (Cu DHP type according to ISO 1337),
degreased and deoxidized, suitable for operating pressures of at
least 4200 kPa.
Under no circumstances must sanitary type copper pipe be used.
•Use field-supplied 16 mm I.D. PVC pipe of appropriate length and
with the correct thermal insulation for the condensate drain.
•After installation thoroughly test the system operation and explain
all system functions to the owner.
•Leave this manual with the owner for consultation during future
periodic maintenance.
•Use this unit only for factory approved applications: the unit
cannot be used in laundry or steam pressing premises.
IMPORTANT:
During the unit installation make first refrigerant connections
and then electrical connections. When disassembling first
disconnect electrical cables, then refrigerant connections.
WARNING:
Disconnect the mains power supply switch before servicing
the system or handling any internal parts of the unit.
•Do not open the remote controller to avoid possible damage.
In case of malfunctioning contact a qualified service engineer.
•This installation manual describes the installation procedures of
the indoor unit of a residential split system consisting of two units
manufactured by Carrier.
Consult factory or a qualified system engineer prior to connecting
this unit to any other manufacturer's outdoor unit.
Coupling units which have different control systems, may cause
irreversible damage and void the warranty protection.
The manufacturer declines any liability for system malfunction
resulting from unapproved coupling.
•Operating conditions outside the operating range
(“Connections”), will cause safety device tripping or damage to
unit components.
•The manufacturer declines any liability for damage resulting from
modifications or errors in the electrical or refrigerant connections.
Failure to observe the installation instructions or use of the unit
under conditions other than those indicated in Table III (operating
limits) of the outdoor unit installation manual, will immediately
void the unit warranty.
General information
•Failure to observe electric safety codes may cause a fire hazard in
case of short circuits.
•Inspect equipment for damage due to improper transportation or
handling: file an immediate claim with the shipping company.
Do not install or use damaged units.
•In case of any malfunctioning turn the unit off, disconnect the
mains power supply and contact a qualified service engineer.
•This equipment contains R-410A refrigerant, a substance that is
not depleting the ozone layer.
•All of the manufacturing and packaging materials used for
your new appliance are compatible with the environment and
can be recycled.
•Dispose of the packaging material in accordance with local
requirements.
•This equipment contains refrigerant that must be disposed of in
the proper manner.
When disposing of the unit after its operational life, remove it
carefully.
The unit must then be delivered to an appropriate disposal centre
or to the original equipment dealer, for proper environmentally
friendly disposal.
Choosing the installation site
Positions to avoid:
•Exposed to direct sun.
•Too close to heat sources.
•On humid walls or positions with water hazard, e.g. laundry premises.
•Where curtains or furniture may obstruct free air circulation.
Recommendations:
•Choose an area free from obstructions which may cause irregular
air distribution and/or return.
•Check that the wall surface is flat enough to allow easy and safe
installation.
The wall structure should be strong enough to carry the unit
weight and avoid deformation, rupture or vibration during
operation.
•Consider using an area where installation is easy.
•Choose a position that allows for the clearances required (see drawing).
•Look for a position in the room which assures the best possible air
distribution.
•Install the unit in a position where condensate can easily be piped
to an appropriate drain.
42VMC
GB - 5
ENGLISH
...any obstruction of the unit air outlet or return.
...exposure to oil vapours.
...installation in areas with high frequency waves.
...
any rise in the condensate drain piping.
.
...horizontal condensate drain piping with less than 2% slope.
...slack on electrical connections. ...disconnecting refrigerant
connections after installation: this will cause refrigerant leaks.
...exposure to direct sunshine, when unit is operating in cooling
mode; always use shutters or shades..
...positions too close to heating sources which may damage the unit.
...connecting condensate piping to sewage system drain without
appropriate trap. Trap height must be calculated according to the unit
discharge head in order to allow sufficient and continuous water evacuation.
...only partial insulation of the piping.
...installation not correctly levelled which will cause condensate
dripping.
...flattening or kinking the refrigerant pipes or condensate pipes.
...excessive height difference between outdoor and indoor units
(see installation manual of outdoor unit).
...unnecessary turns and bends in interconnecting tubing. ...excessive
interconnecting tube length (see installation manual of outdoor unit).
Warnings: avoid…
42VMC
GB - 6
Installation
D
C
B
A
Hole
Plate
Template
Vertical wall-mounting
•The preferred arrangement is generally under a window sill on an
external wall.
This makes it easier to install the interconnecting tubing,
electrical connections and condensate pipework to the outdoor
unit.
The indoor unit can also be installed against an internal partition
if the connections to the outdoor unit can be concealed.
•For better operation of the thermostat located on the unit, it is
advisable to avoid unit installation in enclosed spaces.
•There are three alternatives for the connections to the unit:
parallel to the wall, through the wall or through the side.
Preparation
• Unpack the unit.
•Open and remove the suction grille.
To remove suction grille, remove the central lock using a pliers,
then with a screwdriver remove the two side screws fixing the
fasteners.
•Locate the mounting template, supplied with the unit.
Installation
•Use the template supplied, and drill the four fixing holes in the
wall. Use the four dowels provided.
•Fix the attachment plate (using the two upper holes).
•Attach the unit.
•Fix the unit to the wall, using the two holes, positioned in the lower
part.
•Verify that the unit is level.
Ceiling installation
•Using the template supplied, drill the four holes in the ceiling and
position four tie rods (not supplied).
•Attach the unit to the tie-rods, as shown in the illustration.
•Ensure a minimum slope of 5 mm (refrigerant connection side
must be lower) by modifying on the tie-rod fixing.
42VMC 009 012 014 018 024
Amm 850 850 1000 1000 1000
Bmm 786 786 940 940 940
Cmm 237 237 250 250 250
Dmm 237 237 285 285 285
42VMC
GB - 7
ENGLISH
For horizontal installation
To allow the condensate drain pipe to correctly come out of the unit,
proceed as follows:
•Remove from suction grille, the part of grille fixed tonguing,
pressing it until tabs is unhooked.
Mount condensate drain pipe cover 햷 supplied, fitting it as
necessary.
In the event of condensate discharge pump is used
(accessory), the condensate drain pipe can exit together with
the refrigerant pipes.
햲 Indoors
햳 Outdoors
Drilling the hole in the wall for the
connection of the pipes
The pipes can exit the unit to three different directions (see illustra-
tion). For exit to the rear, the wall hole must be made in the position
shown in the illustration.
Drill a 70 or 80 mm diameter hole. The hole must have a 5-10 mm
downward slope towards the outside. Insert the plastic conduit
provided.
Pass the electrical connecting wires through the conduit (see
electrical connections).
Ø 80 mm
50 mm
75 mm
Ø 70 / 80 mm
햲햳
5-10 mm
Condensate drain pipe
For vertical installation
Connect the PVC pipe to the connection on the drain pan.
IMPORTANT:
The outdoor unit is designed to operate without the use of
condensate water to cool the condenser coil.
It is necessary to discharge the condensate directly into the
sewer system, downpipes or to disperse it outside.
Installation
A
B
ARefrigerant connections
BCondensate drain pipe
햷
42VMC
GB - 8
Refrigerant connections
Connection to the unit
Insufficient tightening torque will cause gas leaks.
Overtightening the fittings will damage the tube flaring and cause
gas leaks.
Tubing diameter Torque
mm (inches) Nm
6.35 (1/4”)18
9.52 (3/8”)42
12.70 (1/2”)55
Once all connections have been completed, check for leaks by
applying soapy water to them.
If incorrect connection or removal of the unit results in a refrigerant
gas leak, check the refrigerant charge as indicated in the
“OUTDOOR UNIT INSTALLATION MANUAL”.
Finally wrap connections with anti-condensate insulation and
tighten with tape, without exerting great pressure on the insulation.
Repair and cover any possible cracks in the insulation.
Connection pipes and electric cables between indoor and outdoor
units must be fixed to the wall with appropriate conduits.
Check
Pour water into the condensate drain pan and check that it flows
freely to the drain.
Make refrigerant connections before connecting the system to
the power supply.
Refer to the outdoor unit installation manual for tube sizing,
and limitations (slopes, length, number of curves allowed,
refrigerant charge, etc.)
Tubing diameter
Gas Liquid
Model (Suction) (Discharge)
mm (inches) mm (inches)
009 9.52 (3/8”)6.35(1/4”)
012 12.70 (1/2”)6.35(1/4”)
014 12.70 (1/2”)6.35(1/4”)
018 12.70 (1/2”)6.35(1/4”)
024 12.70 (1/2”)6.35(1/4”)
•For refrigerant tubes use seamless, insulated refrigeration grade
tube, (Cu DHP type according to ISO 1337), degreased and
deoxidized, suitable for operating pressures of at least 4200 kPa.
Under no circumstances use sanitary type copper pipe.
Note:
•Do not kink or flatten the tubes.
•Avoid bends with a bending radius of less than 100 mm.
•Do not bend copper tubes more than three times at the same point.
•Do not remove flare fittings from unit tubes before actually making
the connections.
•Do not fasten the insulation too tightly to the tubes with straps or
tape.
Flaring the end of the tubing
Remove protective caps from the copper tube ends. Position tube
end downward, cut the tube to the required length and remove the
burrs with a reamer.
Remove flare nuts from the unit connections and place them on the
tube end.
Flare the tube with a flaring tool.
Flare end must not have any burrs or imperfections.
The length of the flared walls must be uniform.
Finger-tighten the fitting several turns, then tighten it fully with two
wrenches by applying the tightening torque indicated in the table.
햲Adijustable wrench or
torque wrench
햳Connecting pipes
햴Unit connections
햵Tube insulation
햶Fastening tape
L
L
햶
햵
햲햳
햴
42VMC
GB - 9
ENGLISH
Electrical connections
Jumper positioning:
Units are equipped with a jumper inside the electric control box, to
make them suitable for the two installation typologies:
Wall vertical installation: jumper inserted.
Ceiling horizontal installation: jumper removed.
To reset incorrect jumper positioning, proceed as follows:
• Disconnect the power supply.
• Reposition the jumper correctly.
• Connect the power supply.
IMPORTANT:
•Make refrigerant connections before electrical
connections.
When disconnecting, disconnect electrical connections before
refrigerant connections.
•Make ground connection prior to any other electrical
connections.
The mains supply must be connected as follows:
Models 42VMC 009, 012, 014: to the indoor unit.
Models 42VMC 018, 024: to the outdoor unit.
•Make electrical connections between units prior to proceeding
to mains supply unit connection.
•Before proceeding with the unit connection to the mains supply
locate live L and neutral N, then make connections as shown
in the wiring diagram.
•Ensure that mains supply connection is made through a switch
that disconnects all poles, with contact gap of a least 3 mm.
• The indoor - outdoor unit connecting wires must be A07 RN-F type
(or higher), with synthetic rubber insulation with Neoprene coating,
according to EN 60335-2-40 and HD277.S1 codes.
• The mains supply connecting cable for 42VMC 009, 012, 014
units, must be H07 RN-F type (or higher), with synthetic rubber
insulation with Neoprene coating, according to EN 60335-2-40
and HD277.S1 codes.
• Ground connection between indoor and outdoor unit is made
via the refrigerant pipes.
•With the cable clamp supplied, secure the connecting cable
between the two units.
• Fasten the electric connecting wires with refrigerant tubes together.
Allow an additional length to the electric wires for easy connection
to the unit connectors.
Notes:
•For sizing of power supply wires and delay type fuses, refer
to the outdoor unit installation instructions.
•All field electrical connections are the responsibility of the
installer.
IMPORTANT:
The units are provided with electronic control.
A time-delay device provides a 3 minute starting delay of the
compressor every time the unit is stopped or when it is initially
switched on.
Control and safety devices
The following control and safety devices are built into the indoor
units (see wiring diagrams):
• Room air thermostat adjustable from 18°C to 32°C.
• Motor with overheat/overcurrent protection.
42VMC
GB - 10
Electrical connections
Cooling only
Unit System
Unit System
햳
햲
10 100
10 120
Terminal box legend
Earth.
LLive power supply.
NNeutral power supply.
NNeutral connection indoor/outdoor unit.
RLive connection indoor/outdoor unit.
CNeutral connection indoor/outdoor unit.
YCompressor interlocking contact.
햲Mains supply connecting cable
(field wiring).
햳Connecting cable, indoor-outdoor units
(field wiring).
쐃Indoor unit
쐇Outdoor unit
쐋Main switch
쐏Time-delay fuse or circuit breaker
(see outdoor unit installation manual)
RS
OC YW
2
LYON NW2
LYN
쐃
쐇
YN
230V ~ 50Hz
쐋쐏
N O
W
2
42VMC 009, 012, 014
42VMC 018, 024
햳
햳
햲
Minimum connection wire size between
indoor and outdoor units (mm2)
Model L N N R C Y
42VMC 009 2.5 2.5 1.5 ––1.5
42VMC 012, 014 2.5 2.5 2.5 ––2.5
42VMC 018, 024 –––1.5 1.5 1.5
42VMC
GB - 11
ENGLISH
Heat pump
Unit System
Unit System
햳
햲
10 100
10 120
햲Mains supply connecting cable
(field wiring).
햳Connecting cable, indoor-outdoor units
(field wiring).
쐃Indoor unit
쐇Outdoor unit
쐋Main switch
쐏Time-delay fuse or circuit breaker
(see outdoor unit installation manual)
Terminal box legend
Earth.
LLive power supply.
NNeutral power supply.
NNeutral connection indoor/outdoor unit.
RLive connection indoor/outdoor unit.
CNeutral connection indoor/outdoor unit.
YCompressor interlocking contact.
OReversing valve control.
W2 Outdoor fan signal.
SDefrost end signal.
Electrical connections
RS
OC YW2
LYON NW
2
햲햳
햳햳
42VMC 009, 012, 014
42VMC 018, 024
LYN
쐃
쐇
YN
230V ~ 50Hz
쐋쐏
N O
W
2
O
W
2
쐃
쐇
230V ~ 50Hz
쐋쐏
RLCYNO
W2
RYOC
W2
S
S
Minimum connection wire size between
indoor and outdoor units (mm2)
Model L N N R C Y O W2 S
42VMC 009 2.5 2.5 1.5 ––1.5 1.5 1.5 –
42VMC 012, 014 2.5 2.5 2.5 ––2.5 2.5 2.5 –
42VMC 018, 024 –––1.5 1.5 1.5 1.5 1.5 1.5
42VMC
GB - 12
System configuration
System configuration
Units are factory configured as heat pumps.
When a cooling only system is installed, it is necessary to change
the factory configuration.
Such operation must be performed by the installer as follows:
Cooling only configuration (of the system)
•Check all electrical connections (instructions and wiring diagram).
•Insert the batteries into the remote control and leave it OFF.
•Energise the system, turning the power supply ON.
•Press the and buttons of the infrared remote control and
hold them pressed for more than 5 seconds.
•The display will be cleared, the time segments will display the first
configuration item (rAdr = remote address) and the temperature
segments will display the default value of this configuration item
(Ab = control of both indoor units).
•Press button repeatedly until “UCFG” is displayed.
•Press either the or button to change the default value (HP)
to the new value (AC).
•Press button to transmit the new configuration to the unit.
•Press button to leave the configuration menu.
For other available configuration options, see table IV.
Note:
When 30 seconds have elapsed and no buttons have been
pressed, the remote controller will automatically exit the
configuration menu and the procedure has to be restarted.
Table V
Shown on Explanation Description
display
“A”: unit A Address indoor unit A.
“CH”“b”: unit B Address indoor unit B.
“Ab”: units A and B Default address is both indoor units.
“tU”“C”: Degrees Celsius Temperature.
“F”: Degrees Fahrenheit Default is °C.
“rc”“HP”: heat pump Default address is heat pump.
“AC”: cooling only Change address for cooling only.
“HR”17 – 32: 17°C ÷ 32°C Heating temperature range °C min. and max.
63 – 90: 63°F ÷ 90°F Heating temperature range °F min. and max.
“CR”17 – 32: 17°C ÷ 32°C Cooling temperature range °C min. and max.
63 – 90: 63°F ÷ 90°F Cooling temperature range °F min. and max.
“CL”12 : 12: 12 hour clock (AM/PM) Time format (AM = morning; PM = afternoon).
24 : 24: 24 hour clock Default is 12 : 12.
Table IV
Item Shown on Explanation Description
display
“A”: remote unit A Remote address indoor unit A.
1“rAdr”“b”: remote unit B Remote address indoor unit B.
“Ab”: remote units A and B Default address is both indoor units.
2“UCFG”“HP”: heat pump Default address is heat pump.
“AC”: cooling only Change address for cooling only.
3“UAdr”1-240 with increase of 1 CCN unit address.
Default = 1.
4“ZONE”1-240 with increase of 1 Number of zone.
Default = 0.
5“GFdn”1-240 with increase of 1 Number of GFD.
Default = 1.
6“A St”“OF”: unit in stop mode Choose of operating mode after a power supply
“On”: automatic restart interruption.
Cooling only configuration (of the remote controller)
•Insert the batteries into the remote controller and leave it OFF.
•Energize the system, turning the power supply ON.
•Press the and buttons of the infrared remote control and
hold them pressed for more than 5 seconds.
•The display will be cleared, the temperature segments will display
the first configuration item (CH = remote address) and the time
segments will display the default value of this configuration item
(Ab = control of both indoor units).
•Press button repeatedly until “rc” is displayed.
•Press either the or button to change the default value (HP)
to the new value (AC).
•Press button to transmit the new configuration to the unit.
•Press button to leave the configuration menu.
For other available configuration options, see table V.
Note:
When 30 seconds have elapsed and no buttons have been
pressed, the remote controller will automatically exit the
configuration menu and the procedure has to be restarted.
NOTE: If the selection is changed from “rc” (HP operation) to
cooling only and the remote control operating mode is auto or
heating, the operating mode is set to cool.
NOTE: If the “HR” is set to a value that is lower than “CR” and the
remote control operating mode is auto, the operating mode is set to
cooling.
42VMC
GB - 13
ENGLISH
Operating test
•Perform the operating test after the units have been installed in
position and the gas leak test has been completed.
•Check all electrical connections (instructions and wiring diagram).
•Insert the batteries into the remote control and leave it OFF.
•Energise the system, turning the power supply ON.
•Press the and buttons of the infrared remote control and
hold them pressed for more than 5 seconds.
The display will be cleared, the time segments will display the icon
(Src = service test).
•After test has been completed, press button to leave the test
menu.
Note:
When 30 seconds have elapsed and no buttons have been
pressed, the remote control will automatically exit the test menu
and resume its normal operation.
Address selector
If you are installing two indoor units in the same room and you want
them to operate in independent mode, it is necessary to assign
each unit its own address so that each unit can operate via its own
remote control.
For configuration, proceed as follows:
Configuration (of the unit)
•Press the and buttons of the infrared remote control and
hold them pressed for more than 5 seconds.
•The display will be cleared, the time segments will display the first
configuration item (rAdr = remote address) and the temperature
segments will display the default value of this configuration item
(Ab = control of both indoor units).
•Press either the or button to change the default value (Ab) to
the new value (A) or (b).
•Press button to transmit the new configuration to the unit.
•Press button to leave the configuration menu.
Configuration (of the remote controller)
•Press the and buttons of the infrared remote control and
hold them pressed for more than 5 seconds.
•The display will be cleared, the temperature segments will display
the first configuration item (CH = remote address) and the time
segments will display the default value of this configuration item
(Ab = control of both indoor units).
•Press either the or button to change the default value (Ab) to
the new value (A) or (b).
•Press button to transmit the new configuration to the unit.
•Press button to leave the configuration menu.
Note:
When 30 seconds have elapsed and no buttons have been
pressed, the remote control will automatically exit the configuration
menu and the procedure has to be restarted.
Operating test, address selector, fault code,
guide for the owner and accessories
Table VII: Accessories
42VMC
Description Part number 009 012 014 018 024
Condensate discharge pump 230V ~ 50Hz 42VKG9002 앬앬앬앬 앬
Cable cover kit 42VKG9003 앬앬앬앬 앬
Fault code
Once a failure occurs with the indoor unit in operation, the green
unit LED flashes at intervals of 0.5 seconds.
The fault code is deduced from the number of times the green LED
flashes, blocking unit operation.
Between one flash cycle and the next one, a pause of 5 seconds
elapses.
Table VI: Fault code
Code Description
3 Room air sensor fault
4 Indoor unit coil sensor fault
6 Filter dirty
7 Outdoor unit failure
10 EEPROM corrupt
11 Unit address incomplete
12 Address / zone incomplete
13 Gas flow distributor corrupt
Guide for the owner
When installation and tests are completed explain the Operation
and Maintenance Manual to the owner, with particular attention to
the main operating modes of the air conditioner, such as:
•Turning the unit on and off.
•Functions of the remote control.
•Removal and cleaning of the air filters.
Leave the two installation manuals for the indoor and outdoor units
with the owner for future use during maintenance operations or for
any other needs.
42VMC
GB - 14
Air delivery and fresh air renewal
Ceiling installation, cooling Ceiling installation, heating
Fresh air renewal
Units are prearranged for introduction of renewal air through a
prepunched hole located on back side.
Back knockout allows connection of fresh air inlet duct.
Model 009 - 012 Model 014 - 018 - 024
• Use locally purchased material, suitable for operating
temperatures of 60 °C (continuous).
Conduits can be of flexible polyester (with spiral core) or
corrugated aluminium, externally covered with anti-condensate
material (fibre glass from 12 to 25 mm thickness).
• To complete the installation, all non-insulated ducts must be
covered with anti-condensate insulation (ex. expanded neoprene,
6 mm thickness).
Not observing of these instructions may cause condensate
dripping; the manufacturer will not be held responsible for any
damage caused.
• The supplementary fan motor for outside air intake has to be
supplied separately and controlled by a bipolar ON-OFF switch
with safety fuses (field-installed).
To adjust the fan motor air flow to the required values it is
advisable to install a speed controller.
Fresh air flow must be less than 10% of the total air flow, to
avoid operating problems.
For fresh air ventilation rates higher than 10%, a primary air
treatment system with separate deflectors is recommended.
• Install an air inlet grille with filter inspection port to prevent
dust and dirt from entering and fouling the indoor unit heat
exchanger.
Filter installation also makes the installation of a duct closing
damper during shutdown periods unnecessary.
Air delivery direction
Wall installation, heating
Wall installation, cooling
IMPORTANT:
Air is supplied into the room through the grilles located on top
of the cabinet; air from the room is drawn into the unit through
the grilles and filter at the bottom of the unit.
“No draught”
(guide vane fully open)
(position recommended for ceiling installation in
cooling mode, to avoid draughts)
Make absolutely sure that the above parts are not obstructed
(even partially).
L010125H33 - 0402
Via R. Sanzio, 9 - 20058 Villasanta (MI) Italy - Tel. 039/3636.1
The manufacturer reserves the right to change any product specifications without notice.
Order No. 14489-74, April 2002. Supersedes Order No. 14489-74, January 2002. Printed in Italy

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