McQuay RCM20D User manual

CEILING/FLOOR
EXPOSED CONVERTIBLE
SPLIT TYPE AIR CONDITIONERS
INSTALLATION MANUAL
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English
This manual provides the procedures of installation to ensure a safe and good standard of operation for the air
conditioner unit.
Special adjustment may be necessary to suit local requirements.
Before using yourair conditioner, please read this instruction manual carefully and keep it for future reference.
INSTALLATION MANUAL
Part No.: A08019003071
COOLING UNIT
Reference Model
CE20D
SL20B
CE25D
SL25B
CE30D
SL30C
CE40D
SL40C
CE50D
SL50C
HEAT PUMP UNIT
Reference Model
CE20DR
SL20BR
CE25DR
SL25BR
CE30DR
SL30CR
CE40DR
SL40CR
CE50DR
SL50CR
Model
RCM20D / MCM020D / YCE20D / LXCM20D
ALC20B / MLC020B / YSL20B / LXLC20B
RCM25D / MCM025D / YCE25D / LXCM25D
ALC25B / MLC025B / YSL25B / LXLC25B
RCM30D / MCM030D / YCE30D / LXCM30D
ALC30C / MLC030C / YSL30C / LXLC30C
RCM40D / MCM040D / YCE40D / LXCM40D
ALC40C / MLC040C / YSL40C / LXLC40C
RCM50D / MCM050D / YCE50D / LXCM50D
ALC50C / MLC050C / YSL50C / LXLC50C
Model
RCM20DR / MCM020DR / YCE20DR / LXCM20DR
ALC20BR / MLC020BR / YSL20BR / LXLC20BR
RCM25DR / MCM025DR / YCE25DR / LXCM25DR
ALC25BR / MLC025BR / YSL25BR / LXLC25BR
RCM30DR / MCM030DR / YCE30DR / LXCM30DR
ALC30CR / MLC030CR / YSL30CR / LXLC30CR
RCM40DR / MCM040DR / YCE40DR / LXCM40DR
ALC40CR / MLC040CR / YSL40CR / LXLC40CR
RCM50DR / MCM050DR / YCE50DR / LXCM50DR
ALC50CR / MLC050CR / YSL50CR / LXLC50CR
CEILING/FLOOR EXPOSED CONVERTIBLE SPLIT TYPE AIR
CONDITIONER
MODEL
IM-CED-1099-1
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SAFETY PRECAUTIONS
Before installing the air conditioner unit, please read the following safety precautions carefully.
Warning
• Installation and maintenance should be performed by qualified persons who are familiar with local code and
regulation, and experienced with this type of appliance.
• All field wiring must be installed in accordance with the national wiring regulation.
• Ensure that the rated voltage of the unit corresponds to that of the name plate before commencing wiring work
according to the wiring diagram.
• The unit must be GROUNDED to prevent possible hazard due to insulation failure.
• All electrical wiring must not touch the refrigerant piping, compressor and any moving parts of the fan motors.
• Confirm that the unit has been switched OFF before installing or servicing the unit.
IMPORTANT
DO NOT INSTALLOR USE THE AIR CONDITIONER UNIT IN A LAUNDRY ROOM.
CONTENTS
- Safety Precautions page 2
- Air Conditioner Parts Description page 3
- Outline And Dimensions page 3
- Installation Of Indoor Unit page 5
- Installation Of Outdoor Unit page 7
- Refrigerant Piping page 7
- Electrical Wiring Connection page 9
- Vacuuming And Charging page 12
- Additional Charge page 12
- Air Conditioner Unit Operation page 13
- Standard Operating Conditions page 13
- Auto Random Re-start Function page 13
- Service And Maintenance page 14
- Trouble Shooting page 14
Caution
Please take note on the following important points when installing.
• Do not install the unit where leakage of flammable gas may occur.
If gas leaks and accumulates around the unit, it may cause fire ignition.
• Ensure that the drainage piping is connected properly.
If the drainage piping is not connected properly, it may cause water leakage which will dampen the
furniture.
• Do not overcharge the unit.
This unit is factory pre-charged. Overcharge will cause over-current or damage to the compressor.
• Ensure that the unit panel is closed after service or installation.
Unsecured panel will cause unit to operate noisily.
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English
AIR CONDITIONER PARTS DESCRIPTION
INDOOR UNIT
AIR DISCHARGE LOUVER
OUTDOOR UNIT
AIR INTAKE
AIR DISCHARGE NOZZLE
REFRIGERANT
PIPING
SIGNAL RECEIVER
INDICATOR LIGHTS
AIR DISCHARGE GRILLE
AIR INTAKE GRILLE
AIR FILTERS
(INSIDE AIR INTAKE GRILLE)
OUTLINEAND DIMENSIONS
INDOOR UNIT (CE D SERIES)
AIR INTAKE
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MODEL 20 25 30 40 50
A1174 1174 1174 1674 1674
B75 75 75 75 75
C1082 1082 1082 1582 1582
D68 68 68 68 68
E58 58 93 93 93
F156 156 156 156 156
G1214 1214 1214 1714 1714
H57 57 57 57 57
I670 670 670 670 670
J216 216 216 216 216
K319 319 319 319 319
L879 879 879 1379 1379
M517 517 517 517 517
OUTDOOR UNIT
SL SERIES
MODEL A B C D E F G H J K L M N P Q R
SL 20B/20BR
SL 25B/25BR 840 646 330 297 309 626 46 90 64 177 106 408 378 124 492 78.5
SL 30B/30BR
SLC SERIES
All dimensions are in mm.
Sharp edges and coil surfaces are potential locations which may cause injury
hazards. Avoid from being in contact with these places.
Caution
All dimensions in mm.
MODEL A B C D E F G H
SL30C/40C/50C
30CR/40CR/50CR 1030 850 400 448 141.5 746.5 50 85
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English
FIGURE B
Please ensure that the following steps are taken:
• Check the gradient for drainage flow as recommended
in Figure B.
• Provideclearance for easy servicing and optimal air flow
as shown in Figure C.
• The indoor unit must be installed such that there is no
short circuit of the cool discharge air with the warm
return air.
• Do not install the indoor unit where there is direct
sunlight shining on the unit. The location should be
suitable for piping and drainage installation. The unit
must be a large distance away from the door.
FIGURE A
PRELIMINARY SITE SURVEY
• Electrical supply and installation shall conform to the
local authority (e.g. National Electrical Board).
• Voltage supply fluctuation must not exceed ±10% of the
rated voltage. Electricity supply lines must be
independent of welding transformers which can cause
high supply fluctuation.
• Ensure that the installation location is convenient for
wiring and piping.
STANDARD MOUNTING
Ensure that the overhead supports are strong enough to hold
the weight of the unit. Position the hanger rods (wall
mounting bracket for floor standing), and check for its
alignment with the unit as shown in Figure A. Also, check
that the hangers are secured and the base of the fan coil unit
is leveled in both horizontal directions, taking into account
the gradient for drainage flow as recommended in Figure B.
INSTALLATION OF THE INDOOR UNIT
MODEL 20 25 30 40 50
A1214 1214 1214 1714 1714
B666 666 666 666 666
C273 273 273 273 273
D130 130 130 130 130
E1160 1160 1160 1560 1560
F27 27 27 27 27
G77 77 77 77 77
H745 745 745 1235 1235
I25 25 25 25 25
J209 209 209 331 331
K486 486 486 486 486
L108 108 108 108 108
M360 360 360 600 600
10.0mm
10.0mm LOWER
Note: Floor standing installation available for CE20D/DR
and CE25D/DR only.
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FIGURE D
SEMI-ENCLOSE MOUNTING
• In case the unit is to be half-recessed into a false ceiling, please check that the unit is well-aligned.
• Provide the installation space as shown in figure D.
CEILING TYPE
FIGURE C
FLOOR STANDING TYPE
CEILING BOARD TOP PANEL OF UNIT
UTENSILS, FURNITURES OR BUILT-IN
ARCHITECTURAL FEATURES MUST
NOT PROTRUDE MORE THAN 250.0MM
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OBSTACLE
OBSTACLE
OBSTACLE
OBSTACLE
SERVICE ACCESS
INSTALLATION OF THE OUTDOOR UNIT
The outdoor unit must be installed in such a way, so as to
prevent short circuit of the hot discharged air or obstruction
to the smooth air flow. Please follow the installation clear-
ance shown in the figure. Select the coolest possible place
where intake air temperature is not greater than the outside
air temperature (maximum 45°C).
Installation clearance
Note : If there is any obstacle higher than 2m, or if there is
any obstruction at the upper part of the unit, please allow
more space than the figure indicated in the above table.
Dimension A B C D
Minimum
Distance (mm) 300 1000 300 500
REFRIGERANT PIPING
MAXIMUM PIPE LENGTH AND MAXIMUM NUMBER OF BENDS
If the pipe length is too long, both the capacity and the
reliability of the unit will decrease.As the number of bends
increases, resistance of the piping system to the refrigerant
flow increases and thus lowering the capacity, as a result
the compressor may become defective. See Figure O and
Figure P.
ELEVATION
OUTDOOR UNIT
PIPING LENGTH
INDOOR UNIT
FIGURE O
INDOOR UNIT
MAXIMUM
PIPING 20m
MAX. ELEVATION HEIGHT
MODEL 20 25 30 40 50
Maximum Length (m) 15 15 20 20 20
Maximum Elevation (m) 8 8 10 10 10
Maximum Number of Bends 10 10 10 10 10
Therefore, always select the shortest path for the piping
system and follow the recommendations as tabulated in the
table.
FIGURE P
RETURN AIR
DISCHARGE AIR
RETURN AIR
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REMOVE BURR
SPANAR TORQUE WRENCH
INDOOR PIPING FLARE NUT
FLARED TUBEFLARE JOINT
COPPER TUBE
SWAGING BLOCK
Ø TUBE A (mm)
Inch mm Imperial Rigid
1/4" 6.35 1.3 0.7
3/8" 9.52 1.6 1.0
1/2" 12.70 1.9 1.3
5/8" 15.88 2.2 1.7
3/4" 19.05 2.5 2.0
CUTTING COPPER TUBE
PIPING CONNECTION TO THE UNITS
• Align the center of the piping and tighten the flare nut
sufficiently with fingers.
• Finally, tighten the flare nut with the torque wrench
until the wrench clicks.
PIPE SIZE (mm/in) TORQUE (Nm)
6.35 (1/4) 18
9.53 (3/8) 42
12.7 (1/2) 55
15.88 (5/8) 65
19.05 (3/4) 78
• If any brazing work is required, ensure that the nitrogen
gas is passed through coil and joints while the brazing
work is being done. This will eliminate soot formation
on the inside walls of the copper tubings.
• Cut the connection pipe with a pipe cutter.
• Remove burrs from cut edges of the pipes with remover.
Hold the end of the pipe downwards to prevent metal
chips from entering the pipe.
• Insert the flare nuts, mounted on the connection parts of
both the indoor unit and outdoor unit onto the copper
pipes.
• Flare the pipe with extra length above the flaring tool as
shown in the table.
• The flared edge must be even and not cracked or
scratched.
PIPING WORKS
• Do not use contaminated or damaged copper tubing. Do not remove plastic, rubber plugs and brass nuts from the valves,
fittings, tubings and coils until you are ready to connect suction or liquid line into valves or fittings.
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English
ELECTRICALWIRING CONNECTION
ELECTRICALWIRING CONNECTION FOR CE 20D/25D/30D
IMPORTANT: These values are for information only, they should be checked and selected to comply with the local and/or
national codes and regulations. They are also subjected to the type of installation and size of
conductors used.
Model 40D 50D
Voltage range 380V – 415V/3Ph/50Hz + !
Power Supply Cable size mm22.5 2.5
Number of conductors 55
Interconnection Cable size mm21.5 1.5
Number of conductors 44
Recommended fuse A 15 20
ELECTRICALWIRING CONNECTION FOR CE 40D/50D
The electrical power must be provided with
protection devices (circuit breaker or fuse)
with double pole separation system (phase +
neutral) with minimum contact gap of 3mm.
TERMINAL STRIP
INDOOR UNIT
INTERCONNECTION
CABLE TERMINAL STRIP
OUTDOOR UNIT
COMP
L
N
N
COMP
N
Model 20D 25D 30D
Voltage range 220V – 240V/1Ph/50Hz + !
Power Supply Cable size mm22.5 2.5 4
Number of conductors 333
Interconnection Cable size mm22.5 2.5 2.5
Number of conductors 334
Recommended fuse A 16 20 25
CE20D/25D
L
N
COMP
L
N
COMP
S
R
L
N
TERMINAL
STRIP
INDOOR
UNIT
INTERCONNECTION CABLE CAPACITOR
TERMINAL
STRIP
OUTDOOR
UNIT
The electrical power must be provided with
protection devices (circuit breaker or fuse)
with double pole separation system (phase +
neutral) with minimum contact gap of 3mm.
POWER SUPPLY
CABLE
IMPORTANT: These values are for information only, they should be checked and selected to comply with the local
and/or national codes and regulations. They are also subjected to the type of installation and size of con-
ductors used.
CE30D
POWER SUPPLY
CABLE
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