Carrier 40SMC user guide manual

40SMC---N

INST ALLA TION MANUAL

40SMC---N
Ducted above-ceiling units (Cooling only and heat pump)

IR Remote Control “Room Controller” “Zone Manager”

The unit can be used with infrared Remote Control, with the Carrier “Room
Controller” or “Zone Manager”.
For the installation instructions of the wired remote controls and the remote control refer
to the corresponding manuals.

For the instructions for use of the air conditioner and outdoor installation instructions
refer to the corresponding manuals.

Contents

Page

Dimensions ................................................................................................. 2

T echnical data............................................................................................. 3

General information .................................................................................... 3/4

Warnings: avoid.......................................................................................... 4/5

Installation................................................................................................... 6

Refrigerant connections.............................................................................. 7

Electric connection ..................................................................................... 8/12

Alarm code .................................................................................................. 12

Accessories................................................................................................. 12

Guide for the owner..................................................................................... 12

Fan diagrams.............................................................................................. 13/14

ENGLISH

Cooling only and Power

heat pump supply

models

40SMC009N
40SMC012N
40SMC018N
40SMC024N 230V~50Hz
40SMC028N
40SMC036N
40SMC048N
40SMC060N

GB - 1

40SMC---N

Dimensions

햳

햷

햸
햲
햴

P

N

M

Ø AP

햵

L

K

Ø AM

AC

햺

Ø AN

햻

햹

AD AC

45

AF

AE

햲 Coil
햳 Fan
햴 Drain pan
햵 Drain connection Ø AP
햶 Outside air intake
햷 Electrical box
햸 Unit support
햹 Air filter
햺 Liquid Ø AM
햻 Gas Ø AN

E
D

1919

29

AB

GH

260

Z

9

B

J

F

AL

180

Y

AKAJ

햶

I

2828

C

180

87

YZ

VU

Q

W
R

VU

Q

A

40SMC---N A B C D E F G H I J K L M N P Q R S

009 - 012 - 018 725 555 220 743 781 262 222 71 23 607 31.5 59 140 200 35 33 659 45
024 - 028 - 036 925 660 285 943 981 241.5 321 97.5 23 712 33.5 118.5 199.5 264.5 35 37.5 850 87.5

048 - 060 1250 750 310 1268 1306 261 321 168 22 801 43 143 224 289 43 110 1030 103

32

X

TS

40SMC---N Ø AM Ø AN Ø AP

009 1/4” 3/8” 20

012 - 018 1/4” 1/2” 20

024 1/4” 1/2” 25

028 1/4” 5/8” 25

036 - 048 - 060 3/8” 3/4” 25

햺

AG AH

Ø AM

햻

Ø AN

Ø AP

햵

40SMC---N T U V W X Y Z AB AC AD AE AF AG AH AJ AK AL

009 - 012 - 018 143 62 211 179 103 13 27 3,5 89 545 33 142 31 90 128 54 38
024 - 028 - 036 165.5 90 276 193 125 23 82 31 99 725 33 207 31 110 160 50 75

048 - 060 175 203 290 264 116 23 107 31 109 1030 32 233 32 140 185 50 75

When designin an installation ensure the use of up-to-date drawings available from your local Carrier office.

GB - 2

40SMC---N

T echnical data

Table I: Nominal data

MAXIMUM POWER INPUT (WATT)

Cooling only and heat pump

Unit Cooling Heating

40SMC009N 120 120
40SMC012N 130 130
40SMC018N 180 180
40SMC024N 290 290
40SMC028N 320 320
40SMC036N 420 420
40SMC048N 576 576
40SMC060N 620 620

T able II: Operating limits

Cooling / Heating Refer to outdoor unit installation manual.
Main power supply

Nominal single-phase voltage 230V ~ 50Hz
Operating voltage limits min. 198V – max. 264V

(1)

Note:
For power supply wire size and delay type fuses, refer to the outdoor
unit installation instructions.

(1)

Power inputs have been measured with free outlet, at maximum
speed and with voltage 264V~50Hz.

ENGLISH

Table III: External static pressure

40SMC---N 009 012 018 024 028 036 048 060

Nominal static
pressure (Pa)

Maximum static
pressure (Pa)

33 40 45 60 50 50 70 80

60 70 160

General information

Unit installation

Read this instruction manual thoroughly before starting
installation.

• This unit complies with the low-voltage (EEC/73/23) and

electromagnetic compatibility (EEC/ 89/336) directives.

• Follow all current national safety code requirements.

In particular ensure that a properly sized and connected
ground wire is in place.

• Make sure the electric system voltage and frequency comply with

the required values and the power input available is suitable for
running the unit.
Also ensure that national safety code requirements have been
followed for the main supply circuit.

• Connection of the system to the mains power supply is to be

carried out in compliance with the wiring diagram shown in the
installation instructions of the external section.

• Connect the indoor and outdoor units by means of copper pipes

equipped with flanged connections (not included in the supply).

Use insulated seamless refrigeration grade pipe only, (Cu DHP
type according to ISO1337), degreased and deoxidized,
suitable for operating pressures of at least 4200 kPa and for
burst pressure of at least 20700 kPa.
Under no circumstances must sanitary type copper pipe be
used.

• After installation thoroughly test system operation and explain
all system functions to the owner.

• Use this unit only for factory approved applications: the unit
cannot be used in laundry or steam pressing premises.

WARNING:
Disconnect the mains power supply switch before servicing
the system or handling any internal parts of the unit.

• This installation manual describes the installation procedures
of the indoor unit of a residential split system consisting of two
Carrier manufactured units.
Do not connect this unit to any other manufacturer's outdoor
unit.
The manufacturer declines any liability for system malfunction
resulting from unauthorised system combinations.

GB - 3

40SMC---N

General information

• 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
“Operating limits” of the outdoor unit installation manual, will
immediately invalidate the unit warranty.

• Failure to observe electric safety codes may cause a fire
hazard in the event of short circuits.

• Inspect equipment for damage during transport.
In case of damage file an immediate claim with the shipping
company.
Do not install or use damaged units.

• In case of malfunction turn the unit off, disconnect the mains
power supply and contact a qualified service engineer.

• Maintenance of the refrigerant circuit must only be carried out
by qualified personnel.

• All of the manufacturing and packaging materials used for
this appliance are recyclable.

• Dispose of the packaging material in accordance with local
requiremements.

• This equipment contains refrigerant that must be disposed of
correctly.
At the end of the unit’s life, the refrigerant must be taken to
special collection points or delivered to the retailer for correct
disposal.

Positions to avoid:

• Exposure to direct sunlight.

• Areas close to heat sources.

• On damp walls or in positions that may be exposed to water

hazard.

• Where curtains or furniture may obstruct free air circulation.

Recommendations:

• Choose an area free from obstructions which may cause
uneven air distribution and/or return.

• Consider using an area where installation is easy.

• Choose a position that allows for the clearances required.

• Look for a position in the room which ensures the best

possible air distribution.

• Install unit in a position where condensate can easily be piped
to an appropriate drain.

250 mm

Choosing the installation site

• The SMC---N unit has been conceived for above-ceiling
installation.

• The unit must be installed in a not easily accessible place.

• Do not install the unit below 2.5 mm.

• To install the unit at 2.2-2.5 m from the floor, use a

discharge pipe with a minimum length of 250 mm.

W arnings: avoid...

220

200

400

... any obstruction of the unit air intake or supply grilles. ... exposure to direct sunshine, when the unit is operating in the

cooling mode; always use shutters or shades.
... positions too close to heating sources which may damage the unit.

GB - 4

40SMC---N

Warnings: avoid...

... exposure to oil vapours.

ENGLISH

... 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.

... installation in areas with high frequency waves. ... only partial insulation of the piping.

... inclined installation which could cause dripping. ... flattening or kinking the refrigerant pipes or condensate pipes.

5

... horizontal sections or curves of condensate drain piping with less
than 5% slope.

... excessive height difference between outdoor and indoor units
(see installation manual of outdoor unit).

... slack on electrical connections.
... disconnecting refrigerant connections after installation: this
will cause refrigerant leaks.

... unnecessary turns and bends in connection pipes (see
installation manual of outdoor unit).
Excessive connection pipe length (see installation manual of
outdoor unit).

GB - 5

40SMC---N

Installation

Service area

250 mm

햲

220

400

200

Unit installation

Insert 4 M8 threaded rods into the celling. Introduce the other end
of the rods through the slots of unit suspension brackets.
Position the shock absorbers, add washers and screw the nuts
down until the unit is correctly suported.
If there is sufficient space, a rubber or neoprene sheet can be
placed between the ceiling and the unit.

IMPORTANT:
The unit must be perfectly levelled.

햴

햲

햲 Unit
햳 False ceiling
햴 Ceiling
햵 Register cover

Once these operations have been completed, an above-ceiling
installation will be necessary to conceal the unit; do not forget to
install a removable panel to allow for maintenance operations.
Grills of an adequate size should be incorporated in the unit for
return air suction.

쐃

햵

햲 Minimum 5% slope

햳

햳

햴

햵

햲 Screws-in rod
햳 Shoch absorbers
햴 Washer
햵 Nut

Condensate drainage

All units are provided with an internal condensate drain pan which
incorporates a drainage tube 20 mm external Ø (009, 012, 018)
and 25 mm (024, 028, 036, 048, 060).
A tube for evacuating condensates must therefore be provided.

The recommendations below must be followed in all cases:

• Use galvanizad steel, copper or plastic piping.
Do not used ordinary garden hose.

• Use a material that guarantees perfect watertightness on the

drainage pipe.

• If rigid material has been used for the drainage, it is necessary to

provide some kind of elastic coupling in the drainage line to
absorb possible vibrations.

• The drainage line should always be below the connextion itself,

and should also slope to facilitate drainage.

WARNING:
No drillholes should be made in the base of the unit, since the
drain pans may be perforated.

Ductwork

The ductwork dimensions should be determined in accordance
with the air flow circulating through it and with the available static
pressure of the unit.
These information are available in the final pages of the manual.

Various suggestions are made herebelow, regarding the layout
and design of the said doctwork:

• Whatever type of duct is used, it should not be made of materials

which are flammable, or which give off toxic gases in the event
of a fire.
The internal surfaces should be smooth, and not conteminate the
air which passes through.

• At the points where the duct joins with the unit, it is advisable to

use a flexible connection which absorbs vibration and prevents
the transmission of noise inside the ductwork.

• Bends should be avoided as much as possible near the unit

outlet.
If unavoidable, they should be as slight as possible, and internal
deflectors should be used when the duct is of large dimensiones.

IMPORTANT:
Duct calculation and design must be effected by a qualified
technician.

GB - 6

40SMC---N

Refrigerant connections

Refer to the outdoor unit installation manual for tube sizing,
and limitations (slope, length, number of bends allowed,
refrigerant charge, etc.).

Tubing diameter

Model

40SMC 009N 9,52 (3/8") 6,35 (1/4")
40SMC 012N-018N-024N
40SMC 028N 15,87 (5/8") 6,35 (1/4")

40SMC 036N-048N-060N

For refrigerant tubes use seamless, insulated refrigeration grade
tube, (Cu DHP type according to ISO1337), degreased and
deoxidized, suitable for operating pressures of at least 4200 kPa
and for burst pressure of at least 20700 kPa.
Under no circumstances must sanitary type copper pipe be used.

Flaring the end of the tubing

Gas Liquid

(Suction) (Discharge)

mm (inches) mm (inches)

12,70 (1/2") 6,35 (1/4")

19,05 (3/4") 9,52 (3/8")

ENGLISH

Lubricate the tube end and thread of the flare fitting with anti­freeze oil.
Finger-tighten the fitting several turns, then tighten it fully with
two wrenches by applying the tightening torque indicated in the
table.

Connection to the unit

Insufficient tightening torque will cause gas leaks.
Overtightening the fittings will damage the tube flaring and
cause gas leaks.

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 the flaring tool.

햲

햴

햳

햲 Adjustable wrench or torque wrench
햳 Outdoor end
햴 Indoor end

Tubing diameter Torque

mm (inches) Nm

6,35 (1/4") 18

9,52 (3/8") 42
12,70 (1/2") 55
15,87 (5/8") 65
19,05 (3/4") 100

햶

햵

L

Flare end must not have any burrs or imperfections.
The length of the flared walls must be uniform.

L

햵 Tube
햶 Tube insulation
햷 Fastening tape

Once all connections have been completed, check for leaks by
using a leak detector specific for HFC refrigerants.
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.

햷

GB - 7

40SMC---N

1

10

80

10

100

3

10

100

10

80

Refrigerant connections

VERY IMPORTANT:
To prevent electrical shock or equipment damage, make
sure the power supply sectioners are open before electrical
connections are made.
If this action is not taken, personal injury may occur.

First make the refrigerant connections and then the
electrical ones. In the case of disassembly, operations must
be carried out in the opposite sequence.

WARNING:
Operation of unit on improper line voltage constitutes

abuse and is not covered by Carrier warranty.
IMPORTANT:

• The mains supply indoor unit – outdoor unit connecting
cable must be H07 RN-F (60245IEC66) type synthetic rubber

insulation with neoprene coating.

Consult the wiring diagram sent with the outdoor unit.

• To effect the unit power supply (wire inlet, conductor

section, protections, etc..), consult the Electrical Data
Table, the wiring diagram sent with the unit and the

Cooling only

40SMC 009N, 012N

Power supply from indoor unit

standards in force affecting the installation of air
conditioning equipment.

• To connect a condensate drainage pump follow the wiring
diagram instructions in the next pages.

VERY IMPORTANT:
The installer should place protection elements in the line

according to the legislation in force.
IMPORTANT:

• Make ground connection prior to any other electrical

connections.

• Make electrical connections between units prior to proceeding

to mains supply unit connection.

• According to the installation instructions, the disconnecting

switches from the mains power supply should have a contact gap
(4 mm) such that total disconnection can be ensured under the
conditions provided for by overvoltage class III.

NOTE:

• All field electrical connection are the responsibility of the

installer.

1

W2V1V2V3V4

1

3

IMPORTANT:
Cable 햲 must always be placed above cable 햴.

NOTE:
See the outdoor unit installation manual.

40 41

C G P

2 3N N Y O

1L

2

C
G
P

햲 Power supply cable (H07 RN-F)
햴 Interconnection cable (H07 RN-F)

GB - 8

Model GND L N GND N Y O W2 V1 V2 V3 V4 40 41 1 2 3
40SMC009N 3G1,5 3G1,5
40SMC012N 3G2,5 3G2,5 H03VV-F

Indoor and outdoor units

interconnections (mm2)

Disconnected

CRC

3 x 0,75

40SMC---N

Refrigerant connections

Power supply from outdoor unit

NOTE:
See the outdoor unit installation
manual.

햴 Interconnection cable (H07 RN-F)

10

10

100

80

3

Cooling only

40SMC 009N, 012N

3

1

W2V1V2V3V4

40 41

ENGLISH

C G P

2 3N N Y O

1L

2

C
G
P

Model GND L N - Y O W2 V1 V2 V3 V4 40 41 1 2 3
40SMC009N 4G1,5
40SMC012N 4G2,5

40SMC009N, 40SMC012N

combined with Multisplit

Power supply from indoor unit

IMPORTANT:
Cable 햲 must always be placed above cable 햴.

햲 Power supply cable (H07 RN-F)
햳 Interconnection cable (H07 RN-F)
햴 Interconnection cable (H07 RN-F)

10

10

100

80

1

10

80

Indoor and outdoor units

interconnections (mm2)

4G1

Heat pump

40SMC 009N, 012N

1

2

Disconnected

Disconnected

1

W2V1V2V3V4

40 41

C G P

2 3N N Y O

1L

CRC

3 x 0,75

H03VV-F

10

100

10

80

Model GND L N GND N Y O W2 V1 V2 V3 V4 40 41 1 2 3
40SMC009N 3G1,5 3G1,5 2 x 1,5 Disconnected 3 x 0,75
40SMC012N 3G2,5 3G2,5 2 x 1,5 Disconnected H03VV-F

3

3

Indoor and outdoor units

interconnections (mm2)

2

C
G
P

CRC

2

GB - 9

40SMC---N

Refrigerant connections

Heat pump combined with Multisplit

40SMC 009N, 012N, 018N, 024N

Power supply from outdoor unit

C G P

1

W2V1V2V3V4

햲 Interconnection cable (H07 RN-F)
햳 Interconnection cable (H07 RN-F)

1

10

80

10

80

Model GND L N Y O W2 V1 V2 V3 V4 40 41 1 2 3

40SMC 009,012,018,024N combined with Multisplit 3G1 3 x 1 Disconnected 3 x 0,75

2

1

2

Indoor and outdoor units

interconnections (mm2)

40 41

2 3N N Y O

1L

C

2

G
P

CRC

H03VV-F

Cooling only

40SMC 018N, 024N, 028N, 036N, 048N, 060N

C G P

1

NOTE:
See the outdoor unit installation manual.

햴 Interconnection cable (H07 RN-F)

10

100

10

80

Model GND R C Y O W2 S V1 V2 V3 V4 40 41 1 2 3
40SMC018, 024, 028N
40SMC036, 048, 060N H03VV-F

3

Indoor and outdoor units

interconnections (mm2)

4G1 Disconnected

W2

3

V1V2V3V440 41

1R S

2 3C C Y O

C
G
P

CRC

3 x 0,75

2

GB - 10

40SMC---N

Refrigerant connections

ENGLISH

Heat pump

40SMC 018N, 024N, 028N, 036N, 048N, 060N

NOTE:

1

See the outdoor unit installation manual.

W2

V1V2V3V440 41

햳 Interconnection cable (H07 RN-F)
햴 Interconnection cable (H07 RN-F)

10

10

10

80

100

80

3

2

2

3

Indoor and outdoor units

interconnections (mm2)

Model GND R C Y O W2 S V1 V2 V3 V4 40 41 1 2 3
40SMC018N, 024N, 028N
40SMC036N, 048N, 060N H03VV-F

Legend
1 Indoor unit

Earth

L Live power supply
N Neutral power supply
R Power supply connection to outdoor unit
C Neutral, connection to outdoor unit

3G1 4 x 1 Disconnected

Y Compressor interlocking

contac

O Reversing valve control

(Heat pump only)

W2 Outdoor fan signal
S Thermostat end of defrosting

signal

V1, V2, V3, V4 Indoor fan speed

40, 41 Electric heater control
1, 2, 3 Room Controller control

2 Room Controller (CRC)

P Power supply
G Earth
C Signal

C G P

2 3C C Y O

1R S

C

2

G
P

CRC

3 x 0,75

Electric connections for auxiliary pump installation - 40SMC009N-40SMC012N

1

J5

1

J6A

1

J6B

1

J18

J11

1

1

PUMP SENSOR

230Vac - 3,15 A min

N/C

COM

N/O

PS

L

N

1

J10

1

J15

J8

1

J17

J20

1

J13

J2

T1

J7

1

1

K1

J3

J4

1

LNN

Y

O

W2

To make electric connections you need to modify the cables connecting the N or C pole of the terminal block to the J3 pole of the card and

230V-1N-50Hz

insert the pump contact according to the instructions shown in the diagram above.

GB - 11

40SMC---N

Electric connection

Electric connections for auxiliary pump installation

40SMC018N-40SMC024N- 40SMC028N- 40SMC036N- 40SMC048N- 40SMC060N

1

J5

1

J6A

1

J6B

1

J18

J11

1

1

PUMP SENSOR

/

/

1

J10

1

J17

J15

J8

1

J20

1

J13

J7

1

1

J1

J2

J4

1

J3

To make electric connections you need to modify the cables connecting the N or C pole of the terminal block to the J3 pole of the card and insert
the pump contact according to the instructions shown in the diagram above.

Alarm code, accessories and guide for the owner

Alarm code

A diagnostic system is contained in the electronic card to
“check” the system integrity.
When the diagnostic system is under alarm, the red LED
installed onto the main card flashes as indicated below:

• 0,5 sec ON and 0,5 sec OFF with a 5 second pause before the
error code is repeated.

• The number of flashes depends on the error that has been
detected.

Not all of the errors can be reset (see table below).

Error
code

Error

3 Air temperature sensor YES
4 Internal battery temp. sensor YES
5 External battery temp. sensor YES

7 Outdoor unit error YES
10 EEPROM faulty YES
11 Card serial number faulty YES
12 Address/zone number incomplete YES

Resettable

*

Accessories

For accessories refer to the product catalogues and documents.

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.

* NO: Turn off power supply to the system, check and repair, if necessary.

Turn on power.
YES: Check

GB - 12

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.

40SMC---N

Fan diagrams

100

90

80

70

60

Pa

50

40

30

4

20

40SMC009N

1

2

3

Pa

100

90

80

70

60

50

40

30

20

ENGLISH

40SMC012N

1

2

3

4

10

0

70 90 110 130 150 170180 190

햶

40SMC018N

100

90

80

70

60

Pa

50

1

2

40

30

3

4

Pa

10

100

90

80

70

60

50

40

30

0

140 160 180 200 220120100

햶

40SMC024N

1

2

3

4

20

10

0

120 150 200 240

1- Super high speed

(optional)
2- High speed
3- Medium speed
4- Low speed

햶 Air flow (l/s)

20

10

0

170 200 250 400300 350 410

햶햶

GB - 13

40SMC---N

Fan diagrams

Pa

100

90

80

70

60

50

40

30

20

10

40SMC028N

3

4

40SMC036N

100

90

80

70

1

60

1

Pa

2

50

40

30

20

10

2

3

4

0

220 250 300 400 450350

햶

200
190
180
170
160
150
140
130
120
110

Pa

100

90
80
70
60
50
40
30
20
10

0

300 400 500 600 700 800 850 900

40SMC048N

1

2

3

4

햶

Pa

1- Super high speed

(optional)
2- High speed
3- Medium speed
4- Low speed

햶 Air flow (l/s)

0

300 350 400 450 500 550

햶

200
190

180
170
160
150
140
130
120
110
100

90
80
70
60
50
40
30
20
10

0

300 400 500 600 700 800 900

40SMC060N

1

2

3

4

햶

GB - 14

L010127H27 - 1205

Via R. Sanzio, 9 - 20058 Villasanta (MI) Italy - Tel. [phone]

The manufacturer reserves the right to change any product specifications without notice.

December, 2005. Printed in Italy