McQuay A08019025673 User manual

WALL MOUNTED
SPLIT TYPE AIR CONDITIONER
INSTALLATION MANUAL
Group: WALL MOUNTED
Part Number: A08019025673
Date: MARCH 2002
IM-WM1-0302-McQuay
© 2002 McQuay International

OUTLINE AND DIMENSIONS
All dimensions are in mm / (in)
i
Dimension A B C D E
WM071 / 101 / 151 / 1R 785,0 (30,9) 297,0 (11,7) 174,0 (6,85) 595,0 (23,4) 280,0 (11,0)
WM201 / 201R 1050,0 (41,3) 320,0 (12,6) 190,0 (7,5) 730,0 (28,7) 311,0 (12,2)
WM 251 / 251R / 301 / 311 / 301R 1200,0 (44,1) 360,0 (14,2) 200,0 (7,9) 730,0 (28,7) 347,0 (13,7)
Indoor Unit
D
INSTALLATION PLATE
E
FRONT VIEW
TOP VIEW
A
B
C
SIDE VIEW
Outdoor Unit (SL-Series)
Dimension A B C D E F G H J K L M N P Q R
07B / 07BR 740 494 270 266 233 474 47 55 65 166 92 348 318 129 482 68,5
10B / 10BR (29,1) (19,4) (10,6) (10,5) (9,2) (18,7) (1,9) (2,2) (2,6) (6,5) (3,6) (13,7) (12,5) (5,1) (19,0) (2,7)
15B / 15BR
20B / 20BR 840 646 330 297 309 626 41 85 75 177 106 408 378 124 592 78,5
25B / 25BR (33,1) (25,4) (13,0) (11,7) (12,2) (24,6) (1,6) (3,3) (3,0) (7,0) (4,2) (16,1) (14,9) (4,9) (23,3) (3,1)
30B / 30BR
28C / 28CR 855 750 328 303 309 730 49 116 75 187 98 392 362 126 603 164
(33,7) (29,5) (12,9) (11,9) (12,2) (28,7) (1,9) (4,6) (3,0) (7,4) (3,9) (15,4) (14,3) (5,0) (23,7) (6,5)
All dimensions are in mm / (in)
Q
N
E
15 (0,6)
39 (1,5)
A
M
PP
840 (33,1)
D
15 (0,6)
39 (1,5)
5 (0,2)
C
20 (0,8)
20 (0,8)
2,5 (0,1)
F
B
C
5 (0,2)
160 (6,3) H
G
141 (5,6)
K
J
(2,6)
65
L
20 (0,8)
R
Outdoor Unit (SL071 & 10/15 C/CR)
All dimensions are in mm / (in)
Dimension A B C D E F G H I J K L M N O
071 / 1R 600 (23,6) 475 (18,7) 245 (9,6) 418 (16,4) 177 (6,9) 35 (1,3) 93 (3,6) 81 (3,1) 83 (3,2) 55 (2,2) 398 (15,6) 101 (3,9) 97 (3,8) 17 (0,6) 22 (0,8)
10 / 15 C /CR 700 (27,5) 521 (20,5) 250 (9,8) 485 (19,1) 175 (6,8) 36 (1,4) 95 (3,7) 93 (3,6) 86 (3,3) 68 (2,6) 441 (17,3) 130 (5,1) 111 (4,3) 15 (0,5) 18 (0,7)

40 (1,57)
400 (15,75)
320 (12,60)
20 (0,79) 448 (17,64)
141,5 (5,57)
40 (1,57)
20 (0,79)
141,5 (5,57)
Outdoor Unit (SL30C)
ii
This product is subjected to Waste of Electrical and Electronic Equipment Regulations (WEE
E
Regulations). The waste product shall be separately collected by specific collection and treatment centre
.
P
lease refer to local authorithy for these centres. This is only applicable to European Union countries
.
Ce produit est soumis
à
la r
à
é
r
r
glementation concernant les
d
é
chets
d
es
é
quipements
é
lectriques e
t
é
lectroniques (r
é
r
r
é
ê
é
s
é
par
é
rr
m
ent par un centre de collect
e
é
é
é
î
î
tre ces centres. Ceci
îî
é
enne
.
Questo prodotto
è
soggetto alle disposizioni RAEE (Rifiuti di apparecchiature elettriche ed elettroniche)
.
à
à
locali. Questa disposizione
à
è
valida solamente i paes
i
d
el
l
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U.
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.
é
ctrico y Electr
ó
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ico en materia d
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ñ
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de colecc
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solamente aplicable a los p
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ses de la
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i
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Europea
.
G
er
ä
ä
ä
tes
ää
getrennt vom Hausm
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ll bei Ihrer
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tlichen
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lldeponie bzw. Ihrem
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r
tliche
n
ä
ndiges Abfall-Amt. Dieser
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nder der Europ
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ischen Union
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Ев
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опейског
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.
25 (0,98)
1030 (40,55)
850 (33,46)
50 (1,97)
85 (3,35)
ii
!Осторожно Острые края и поверхности змеевиков являются потенциальными
местами нанесения травм. Остерегайтесь контакта с этими местами.
!Cuidado Los Bordes afilados y la superficie del serpentín pueden producir lesiones. Evite
tocarlos.
!Cautela Per preservarsi da eventuali ferite, evitare di toccare gli spigoli afilati e la superficie
dei serpentini.
!Vorsicht Scharfe Kanten und Wärmetauscherflächen stellen eine Gefahrenquelle dar.
Jeglicher Kontakt mit diesen Stellen ist zu vermeiden.
!Avertissement Les bords coupants et les surfaces du refroidisseur tuulaire présentent un
risque de blessure. Mieux vaut éviter le contact avec ces endroits.
!Caution Sharp edges and coil surfaces are potential locations which may cause
injury hazards. Avoid from being in contact with these places.
NOTICE

1-1
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 your air conditioner, please read this instruction manual carefully and keep it for future reference.
INSTALLATION MANUAL
WALL MOUNTED SPLIT TYPE AIR CONDITIONER
MODEL
COOLING UNIT (R22)
Reference Model Model
WM301 MWM030F
SL30C MLC30C
SL30B MLC30B
COOLING UNIT (R410A)
Reference Model Model
5WM311 M5WM031F
5SL28C M5LC28C
IM-WM1-0302(2)-McQuay
Part No.: A08019025673
HEAT PUMP UNIT (R22)
Reference Model Model
WM301R MWM030FR
SL30CR MLC30CR
SL30BR MLC30BR
HEAT PUMP UNIT (R410A)
Reference Model Model
5WM301R M5WM030FR
5SL28CR M5LC28CR

1-2
!Caution
Please take note of the following important points when installing.
• Do not install the unit where leakage of flammable gas may occur.
If gas leaks and accumulates at the surrounding of 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 units panel is closed after service or installation.
Unsecured panels will cause the unit to operate noisily.
CONTENTS
- Outline and Dimensions page i-ii
- Safety Precautions page 2
- Installation Diagram page 3
- Installation of the Outdoor Unit page 3
- Installation of the Orifice Pipe page 4
- Installation of the Indoor Unit page 6
- Refrigerant Piping page 7
- Electrical Wiring Connection page 8
- Special Precautions When Dealing With R410A Unit page 10
- Vacuuming and Charging page 10
- Indicator Lights page 11
- Air Conditioner Unit Operation page 13
- Standard Operating Conditions page 14
- Electrostatic Filter page 14
- Service and Maintenance page 15
- Troubleshooting page 16
Before installing the air conditioner unit, please read the following safety precautions carefully.
SAFETY PRECAUTIONS
!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 or any moving parts of the fan motors.
• Confirm that the unit has been switched OFF before installing or servicing the unit.
IMPORTANT
DO NOT INSTALL OR USE THE AIR CONDITIONER UNIT IN A LAUNDRY ROOM.

1-3
English
Dimension A
Minimum
Distance, mm 300 1000
INSTALLATION DIAGRAM
Air Intake Grille
Air Discharge
Grille
Air Intake
Refrigerant Piping
Drain Hose
Front Frame
Back Housing
On/Off Switch
Air Filters
Indicator Lights
Signal Receiver
Air Discharge
Louver
Outdoor Unit
Indoor Unit
INSTALLATION OF THE OUTDOOR UNIT
Obstacle
Return Air
Discharge Air
Service Access
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/113°F).
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.
Air Discharge
Nozzle
Obstacle
Obstacle
Obstacle
Return Air
AB
CD
Air Intake
(in) (11.8) (39.4) (11.8) (19.7)
B C D
300 500

1-4
INSTALLATION OF ORIFICE PIPE
Orifice Pipe
1
2
34
1
2
3
4
Outdoor Unit Indoor
Orifice
Pipe, connecting
Flare nut 3/8" (Female)
Flare joint 3/8" (Male)
!Caution
The orifice pipe must be installed in the correct direction as shown above.
Improper direction may cause failure to the operating system.
Note: This installation is only for WM301 / SL30B & WM301 / SL30C
A. Outdoor unit orifice pipe installation (where installation space is wide enough)
Orifice Pipe
Step 2
Step 1
Steps:
1. Directly connect the “Female” nut of the orifice pipe to
the liquid valve.
2. Flare the liquid pipe and connect it to the “Male” joint
of the orifice pipe.
Orifice Pipe
Liquid Pipe

1-5
English
Liquid Pipe
Brazer
C. Indoor unit orifice pipe installation
Indoor Unit
Orifice Pipe
B. Outdoor unit orifice pipe installation (where installation space is limited)
Step 4
Step 3
Step 2
Step 1
Orifice Pipe
If the orifice pipe cannot be connected directly to the liquid valve due to space constraint, it can be connected in between of the
liquid pipe.
Steps:
1. Flare the liquid pipe and connect it to the liquid valve.
2. Braze an additional “Male” joint to the liquid pipe.
3. Connect the “Female” nut of the Orifice pipe to
the“Male” joint.
4. Flare another liquid pipe and connect it to the “Male”
joint of the orifice pipe.
Steps:
1. Braze an additional “Male” joint
to the liquid pipe.
3. Flare another liquid pipe and
connect it to the “Male” joint
of the orifice pipe.
2. Connect the “Female” nut of the
Orifice pipe to the“Male” joint.
Liquid Pipe
Brazer
Liquid Pipe Orifice Pipe Liquid Pipe
Orifice Pipe
Liquid Pipe Orifice Pipe
Liquid Pipe
Orifice Pipe

1-6
INSTALLATION OF THE INDOOR UNIT
Maintenance &
Servicing Space
Air Flow
Direction
Higher Than
Eye Level
The indoor unit must be installed in such a way so as to
prevent short circuit of the cool discharged air with the hot
return air. Please follow the installation clearance shown in
the figure. Do not place the indoor unit where there could be
direct sunlight shining on it. Also, this location must be
suitable for piping and drainage, and be away from doors or
windows.
Mounting installation plate
Ensure that the wall is strong enough to withstand the weight
of the unit. Otherwise, it is necessary to reinforce the wall
with plates, beams or pillars.
Use the level gauge for horizontal mounting, and fix it with
4 suitable screws.
In case the rear piping draws out, drill a hole 65mm in
diameter with a cone drill, slightly lower on the outside wall
(see figure).
Routing of piping
Remove the screw holding the front panel.
Piping routing
1
23
4
5
Installation plate
Marking-offline
Thread
Inside Outside
1/50 Inclination
Right & rear side routing
The refrigerant piping can be routed to the unit in a
number of ways (left or right from the back of the unit), by
using the cut-out holes on the casing of the unit (see figure).
Bend the pipes carefully to the required position in order to
aligned it with the holes. For the right hand and rear side
out, hold the bottom of the piping and then position it to the
required direction (see figure). The condensation drain hose
can be taped to the pipes.
Mount the unit onto the installation plate
Hook the indoor unit onto the upper portion of the
installation plate (Engage the two hooks at the rear top of
the indoor unit with the upper edge of the installation plate).
Ensure that the hooks are properly seated on the
installation plate by moving it to the left and right.
End
Dipped
Into
Water
Water
Leaking
Water
Leaking Water
Leaking
Water drainage piping
The indoor drain pipe must be in a downward gradient for
smooth drainage. Avoid situations that are likely to cause
water to leak.
Connecting cable
Drain hose
J
Wrong
J
Wrong
J
Wrong
j
Correct
✓
50mm 50mm
50mm
50mm 50mm
50mm
Water Drainage

1-7
English
Piping length and elevation
If the pipe is too long, both the capacity and reliability of
the unit will drop. As the number of bends increases,
resistance to the flow of refrigerant system increases, thus
lowering cooling capacity. As a result the compressor may
become defective. Always choose the shortest path and
follow the recommendations as tabulated below:
Remark: The refrigerant pre-charged in the outdoor unit
is for piping length up to 7.62m/25ft.
REFRIGERANT PIPING
Outdoor unit
Indoor unit
Cutting copper tube
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.
• 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.
!Caution
An orifice is used as expansion device in WM301 cooling only unit. It is fixed in the liquid pipe in the indoor unit.
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.
Ø Tube, D A (mm)
Inch mm Imperial Rigid
1/4" 6.35 1.3 0.7
3/8" 9.52 1.6 1.0
Spanar Torque Wrench
Indoor Piping Flare Nut
Flared TubeFlare Joint
LH
Pipe Size mm / (in) Torque Nm / (Ft-lb)
12.7 (1/2) 55 (40.6)
15.88 (5/8) 65 (48.0)
6.35 (1/4) 18 (13.3)
9.53 (3/8) 42 (31.0)
1/2" 12.70 1.9 1.3
5/8" 15.88 2.2 1.7
25Model 07/10 15 20 30
Maximum length, m (ft), L 12 (39.4) 12 (39.4) 15 (49.2) 15 (49.2) 35 (114.8)
Maximum elevation m (ft), H 5 (16.4) 5 (16.4) 8 (26.2) 8 (26.2) 15 (49.2)
Maximum number of bends 10 10 10 10 10
Liquid pipe size 1/4" 1/4" 1/4" 3/8" 3/8"
Gas pipe size 3/8" 1/2" 5/8" 5/8" 5/8"
Copper tube
Swaging block
Remove burr