38GL...G
38YY...G / 38YYS...G
INST ALLA TION MANUAL
38GL...G / 38YY...G / 38YYS...G
Cooling only and heat pump split system outdoor units
For operation and maintenance instructions of this unit as well as installation
instructions of the indoor unit, refer to the relevant manuals.
Contents
Page
Dimensions and weight ................................................................................................................. 2
Connections .................................................................................................................................. 2
Minimum clearances ..................................................................................................................... 3
Operating limits ............................................................................................................................. 3
General information....................................................................................................................... 4
Warnings: avoid............................................................................................................................. 5
Refrigerant connections................................................................................................................ 6/8
Electrical connections ................................................................................................................... 9/11
Electrical data................................................................................................................................11
Pump Down and check the refrigerant charge ............................................................................. 12
Unit maintenance .......................................................................................................................... 13
Troubleshooting............................................................................................................................. 13
Installation instructions supplement ............................................................................................. 14-15
ATTENTION INSTALLERS AND SERVICE TECHNICIANS!
AIR CONDITIONER WITH R-410A–QUICK REFERENCE GUIDE
•R-410A refrigerant operates at 50%-70% higher pressures than R-22. Be sure that servicing
equipment and replacement components are designed to operate with R-410A.
•R-410A refrigerant cylinders have a dip tube which allows liquid to flow out with the cylinder in a vertical
position with the valve at the top.
•R-410A systems should be charged with liquid refrigerant. Use a commercial type metering device
in the manifold hose in order to vaporize the liquid refrigerant before it enters in the unit.
•The R-410A, as for other HFC, is only compatible with oils chosen by the compressor
manufacturer. For this reason, for the type of oil to be used, always refer to the plate on the
compressor and the unit.
•A vacuum pump is not enough to remove moisture from oil.
•Oils absorb moisture rapidly. Do not expose oil to atmosphere.
•Never open system to atmosphere while it is under vacuum.
•When the system must be opened for service, break vacuum with dry nitrogen and replace filter
driers.
•Do not vent R-410A into the atmosphere.
•Use only Carrier matching indoor units (Table I).
ENGLISH
Table I
Cooling Heat
only pump Hi-Wall Console Cassette Satellite
(A/C) (H/P)
38GL018G 38YY(S)18G 42PHQ018N 42PHQ018P
38GL024G 38YY(S)24G 42PHQ024N 42PHQ024P 42VMC024(A)*N
38GL028G 38YY-28G — — 42VMC028 40KMC028N 40SMC028N 40DMC028
38GL036G 38YY-36G — — 42VMC036 40KMC036N
38GL048G 38YY-48G — — — — 40SMC048N 40DMC048
*(A)= Aluminium version
42VMC018(A)*N
40KMC018N 40SMC018N 40DMC018
40KMC024N 40SMC024N 40DMC024
40SMC036N
40SMC048N
40DMC036
Power
supply
230V ~ 50Hz
GB - 1
38GL...G / 38YY...G / 38YYS...G
Dimensions and weight
A
A
Mod. 38YYS024G
B
EED
F
C
Mod. 38GL048G
Mod. 38YY-048G
F
38YY-028G, 036G 38YY-048G
B
EED
C
Mod. 38GL018G, 024G
Mod. 38YY(S)018G
A
B
EED
F
C
Mod. 38GL028G, 036G
Mod. 38YY-024G, 028G, 036G
38GL018G, 024G 38GL028G, 036G 38GL048G
38YY(S)024G
38YY(S)018G
18 24 28 36 48
A mm 800 800 800 800 800
B mm 590 803 803 803 1264
C mm 300 300 300 300 300
D mm 508 508 508 508 508
E mm 146 146 146 146 146
F mm 330 330 330 330 330
kg 46 52 67 68 94
Connections
햲 Outdoor unit
햳 Indoor unit
햴 Height difference
Table II: Connections
Model
18 24 28 36 48
Max. pipe length 30 m 40 m 40 m 40 m 50 m
1
3
2
Max. height difference 10 m 15 m 25 m 30 m 30 m
All fittings are flare type.
Use only refrigeration grade pipes, (Cu DHP type according to
ISO 1337), seamless, degreased, deoxidized and suitable for operating pressures of at
least 4200 kPa and with a burst pressure of 20700 kPa.
Under no circumstances must sanitary type copper pipe be used.
Pipe diameter Pipe diameter
Mod.
18
24
28 15.87 6.35 5/8” 1/4”
36
48
Gas Liquid Gas Liquid
(Suction) (Liquid) (Suction) (Liquid)
mm inches
12.70 6.35 1/2” 1/4”
19.05 9.52 3/4” 3/8”
GB - 2
38GL...G / 38YY...G / 38YYS...G
Minimum clearances
B
A
ENGLISH
D
C
E
DE
Mod.
18 24 28 36 48
A mm 50 100 100 100 100
B mm 250 250 250 250 250
C mm 500 500 500 500 500
D mm 50 50 100 100 100
E mm 470 470 670 670 670
F mm 400 400 400 400 400
T able III: Operating limits
Cooling (2)
Heating (3)
Mains power supply Nominal single-phase voltage 230V ~ 50Hz
(1)
Maximum conditions
Minimum conditions
Maximum conditions
Minimum conditions
Operating voltage limits min. 198V – max. 264V
Outdoor temperature 43°C
Indoor temperature 32°C d.b.; 23°C w.b.
Outdoor temperature 15°C
Outdoor temperature -15°C
for units equipped with head pressure controller (38YYS...G)
Indoor temperature 21°C d.b.; 15°C w.b.
Outdoor temperature 24°C d.b.; 18°C w.b.
Indoor temperature 27°C d.b.
Outdoor temperature –15°C d.b.; –17°C w.b.
Notes: 1. Data referred to the outdoor unit only.
2. According to ISO 5151.2/T1.
3. According to ISO 5151.2/High+.
d.b. - dry bulb w.b. - wet bulb
WARNING:
During heat pump operation unit will undergo several defrost cycles to
eliminate ice that might possibly collect on the outdoor unit in very low
ambient temperatures.
In these cycles, fan speed will automatically reduce and cannot be
varied until defrost cycle is completed.
GB - 3
38GL...G / 38YY...G / 38YYS...G
햲
햳
햴
General information
Unit installation
Read this instruction manual thoroughly before starting the
installation.
R-410A systems operate at higher pressures than standard
R-22 systems. Do not use R-22 service equipment or
components on R-410A equipment.
• This unit complies with low-voltage (EEC/73/23) and electromagnetic compatibility (EEC/89/336) directives.
• Check that the impedance of the mains power supply is in
conformance with the unit power input indicated in the
electric data table IV, (EN 61000-3-11).
• 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; 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 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 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 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.
• This installation manual describes the installation procedures of
the outdoor 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
indoor 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.
IMPORTANT:
During the unit installation make first refrigerant connections
and then electrical connections. If unit is uninstalled 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.
• 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”, will immediately void the unit warranty.
• 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 a
proper manner. When disposing of the unit after its operational
life, remove it carefully.
The unit must then be delivered to an appropriate disposal center
or to the original equipment dealer.
• Carefully recover refrigerant within this unit before final disposal or
when servicing. Never vent refrigerant to atmosphere.
Use approved recovery equipment for R-410A refrigerant.
Do not use R-22 equipment.
Choosing the installation site
Positions to avoid:
• Exposed to direct sun.
• Too close to sources of heat radiation, vapour or flammable gas.
• Particularly dusty areas.
Recommendations:
• Choose a position protected from opposing winds.
• Choose a position sheltered from direct sun.
• Choose an area where air outlet and unit noise will not bother
your neighbours.
• Choose a position that allows for the clearances required.
• Floor structure should be adequately strong to support unit weight
and minimize vibration transmission.
• Consider a position which will not obstruct passageways or doors.
508 mm
330 mm
No. 4 Ø 8 mm pins.
Protrusion height from the support
• Fix the unit with locally purchased bolts buried in the block to
prevent overturning due to strong gusts of wind.
• For heat pump models, unit must be adequately raised above
floor surface.
햵
• To drain the condensate water to a drain while operating in
heating mode, insert the drain fitting into the hole underneath on
the left of the base and use a vinyl pipe with a 16 mm internal
diameter. It must not be used at temperatures lower than 0°C.
(not supplied for low temperature versions).
Snow
• If the unit is installed in areas where heavy snowfalls may occur, it
is necessary to raise its level at least 200 mm above the usual
snow level or alternatively to use the outdoor unit bracket kit.
햶
surface max. 20 mm.
햲 100 mm min.
햳 20 mm gradient.
햴 Gravel-filled trench.
햵 Drain fitting
햶 Vinyl pipe
GB - 4
38GL...G / 38YY...G / 38YYS...G
Warnings: avoid....
Disconnecting the refrigerant connections after installation:
this will cause refrigerant leaks.
Connecting the condensate drain pipe to the outdoor unit.
ENGLISH
Excessive height difference between indoor and outdoor unit (see
Table II "Connections"). Excessive distance between indoor and
outdoor units. (see Table II "Connections").
Predominant head winds.
Multiple unit installation with units facing each other.
Insulating the connecting pipes only partially, which will cause dripping.
Dripping into passageways.
Unnecessary turns and bends in the connecting pipes.
Any slack in the electrical connections.
Flattening or kinking of refrigerant or condensate pipes.
Any obstruction of the unit air outlet and intake or any obstacle that is too
close (see minimum clearances required). Installation on grassy ground
or soft surfaces (in these cases a solid foundation must be included).
Soiling of pipe ends.
Allowing piping to get wet before connection.
GB - 5
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