McQuay G Series User manual

WALL MOUNTED
SPLIT TYPE AIR CONDITIONER
(G Series)
INSTALLATION MANUAL
Group: WALL MOUNTED
Part Number: A08019020381
Date: JANUARY 2004
IM-WMG-0104-McQuay
© 2004 McQuay International

i
All dimensions are in mm / (in)
Indoor Unit (MWMG Series)
OUTLINE AND DIMENSIONS
INSTALLATION
PLATE
Dimension A B C D E F G H I J K L M N O
07 / 09G / GR 799 260 198 490 246 185 124 8 56 50 319 379 50 128 132
(31,5) (10,2) (7,8) (19,3) (9,7) (7,3) (4,9) (0,3) (2,2) (2,0) (12,6) (15,0) (2,0) (5,1) (5,2)
10 / 15G / GR 899 260 198 590 246 185 124 8 56 50 419 495 50 128 132
(35,4) (10,2) (7,8) (23,2) (9,7) (7,3) (4,9) (0,3) (2,2) (2,0) (16,5) (19,5) (2,0) (5,1) (5,2)
A
B
FRONT VIEW
TOP VIEW C
SIDE VIEW
DF G
EH
O
N
I
I
JK
L
M

ii
Indoor Unit (MWMG Series)
All dimensions are in mm / (in)
Dimension
20 / 25G / GR
I
48
(1,9)
H
8
(0,3)
G
51
(2,0)
F
99
(3,9)
E
294
(11,6)
D
912
(35,9)
C
220
(8,6)
B
310
(12,2)
A
1060
(41,7)
O
160
(6,3)
N
138
(5,4)
M
160
(6,3)
L
403
(15,9)
K
354
(13,9)
J
43
(1,7)
FRONT VIEW
TOP VIEW
SIDE VIEW
INSTALLATION
PLATE
A
B
C
A
B
DF
G
MH
I
I
O
N
M
K
L
J
CENTER LINE

iii
Outdoor Unit (MLC Series)
All dimensions are in mm / (in)
3
(0,1)
B
EF
NC N
KLL
M
30
(1,2)
A
D
19
(0,7)
C
GH
IJ
O
80
(3,1) 65
(2,6)
B
A
Q
R
ST
DO
KLL
CN
P
M
N
FE
C
GH
IJ
FOR SL25C/CR
ONLY
All dimensions are in mm / (in)
Dimension A B C D E F G H I J K L M N O
07 / 09C / CR 600 475 245 418 177 35 93 81 83 55 398 101 97 17 22
(23,6) (18,7) (9,6) (16,4) (6,9) (1,3) (3,6) (3,1) (3,2) (2,2) (15,6) (3,9) (3,8) (0,6) (0,8)
10 / 15C / CR 700 521 250 485 175 36 95 93 86 68 441 130 111 15 18
(27,5) (20,5) (9,8) (19,1) (6,8) (1,4) (3,7) (3,6) (3,3) (2,6) (17,3) (5,1) (4,3) (0,5) (0,7)

iv
Dimension A B C D E F G H I J K L M N O
20C / CR 855 628 328 508 181 44 93 149 101 113 603 126 164 17 49
(33,7) (24,7) (12,9) (20,0) (7,1) (1,7) (3,7) (5,9) (4,0) (4,4) (23,7) (5,0) (6,4) (0,7) (1,9)
25C / CR 855 730 328 513 182 44 93 149 101 113 603 126 164 17 47
(33,7) (28,7) (12,9) (20,2) (7,2) (1,7) (3,7) (5,9) (4,0) (4,4) (23,7) (5,0) (6,4) (0,7) (1,9)
Dimension P Q R S T
20C / CR 32 3 23 73 75
(1,3) (0,1) (0,9) (2,9) (3,0)
25C / CR 32 3 23 73 75
(1,3) (0,1) (0,9) (2,9) (3,0)
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
é
é
é
lectriques e
t
é
é
é
ê
é
é
é
é
é
é
é
é
é
î
î
tre ces centres. Ceci
îî
est uniquement applicable aux pays de l'Union Euro
p
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
’
U.
E
.
é
ctrico y Electr
ó
n
ico en materia d
e
ñ
ñ
á
í
fico
íí
de colecc
i
ó
solamente aplicable a los p
a
í
ses de la
U
n
i
ó
n
Europea
.
Dieses Produkt unterliegt den Bestimmungen zur Entsorgung von elektrischen und elektronische
n
G
er
ä
ä
ä
tes
ä
ä
ü
ü
ll bei Ihrer
ö
ü
ö
ä
ndiges Abfall-Amt. Dieser
ää
Hinweis gilt nur f
ü
f
f
rL
ä
ischen Union
.
П
р
оцес
с
у
тилизаци
и
д
анног
о
прод
у
кт
а
рег
у
лир
у
етс
я
п
р
авилам
и
п
о
у
тилизаци
и
отхо
д
о
в
и
(WEEE Re
g
ulations).
и
,
.
Э
т
и
п
р
авил
а
Ев
р
опейског
о
.
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
Part No.:A08019020381 IM-WMG-0104(1)-McQuay
COOLING ONLY
R22 / R407C
WM07G / MWM007G
SL07C / MLC007C
WM09G / MWM009G
SL09C / MLC009C
WM10G / MWM010G
SL10C / MLC010C
WM15G / MWM015G
SL15C / MLC015C
WM20G / MWM020G
SL20C / MLC020C
WM25G / MWM025G
SL25C / MLC025C
R410A
5WM07G / M5WM007G
5SL07C / M5LC007C
5WM09G / M5WM009G
5SL09C / M5LC009C
5WM10G / M5WM010G
5SL10C / M5LC010C
5WM15G / M5WM015G
5SL15C / M5LC015C
5WM20G / M5WM020G
5SL20C / M5LC020C
5WM25G / M5WM025G
5SL25C / M5LC025C
HEAT PUMP
R22 / R407C
WM07GR / MWM007GR
SL07CR / MLC007CR
WM09GR / MWM009GR
SL09CR / MLC009CR
WM10GR / MWM010GR
SL10CR / MLC010CR
WM15GR / MWM015GR
SL15CR / MLC015CR
WM20GR / MWM020GR
SL20CR / MLC020CR
WM25GR / MWM025GR
SL25CR / MLC025CR
R410A
5WM07GR / M5WM007GR
5SL07CR / M5LC007CR
5WM09GR / M5WM009GR
5SL09CR / M5LC009CR
5WM10GR / M5WM010GR
5SL10CR / M5LC010CR
5WM15GR / M5WM015GR
5SL15CR / M5LC015CR
5WM20GR / M5WM020GR
5SL20CR / M5LC020CR
5WM25GR / M5WM025GR
5SL25CR / M5LC025CR

1-2
CONTENTS
Before installing the air conditioner unit, please read the following safety precautions carefully.
SAFETY PRECAUTIONS
- Outline And Dimensions page i-iv
- Safety Precautions page 2
- Installation Diagram page 3
- Installation Of The Outdoor Unit page 3
- Installation Of The Indoor Unit page 4
- Refrigerant Piping page 5
- Electrical Wiring Connection page 6
- Special Precautions When Dealing
with R410A Unit page 7
- Vacuuming and Charging page 7
- Indicator Lights page 8
- Air Conditioner Unit Operation page 9
- Operating Range page 9
- Electrostatic Filter page 10
- Installation of Unit with O2Therapy Feature page 10
- Auto Random Re-Start Function page 11
- Service And Maintenance page 11
- Troubleshooting page 12
!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 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.
• 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.
• Sharp edges and coil surfaces are potential locations which may cause injury hazards. Avoid from
being in contact with these places.
!Warning
• Installation and maintenance shall 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 hazards 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.

1-3
English
INSTALLATION DIAGRAM
Indoor Unit
Refrigerant Piping
Air Discharge
Nozzle
Air Intake
Drain Hose
Signal Receiver
Indicator
Lights
Air Intake
Grille
Back Housing
ON/OFF Switch
Front Frame
Air Filter
Outdoor Unit
Dimension A B C D
Minimum Distance, 300 1000 300 500
mm (in) (11.8) (39.4) (11.8) (19.7)
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 obstruc-
tion to the smooth air flow. Please follow the installation
clearances 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 clearances
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.
Condensed Water Disposal of Outdoor Unit
(Heat Pump Unit Only)
•There are 2 holes on the base of Outdoor Unit for
condensed water to flow out. Insert the drain elbow to
one of the holes.
•To install the drain elbow, first insert one portion of the
hook to the base (portion A), then pull the drain elbow
in the direction shown by the arrow while inserting the
other portion to the base. After installation, check to
ensure that the drain elbow clings to base firmly.
•If the unit is installed in a snowy and chilly area, con-
densed water may freeze in the base. In such case,
please remove plug at the bottom of unit to smooth the
drainage.
Obstacle
Return Air
Service Access
Obstacle
Obstacle
Return Air
Discharge Air
Obstacle
Please remove side
plate when connect-
ing the piping and
connecting cord
PUSH & PULL UP
BASE
A
DRAIN
ELBOW DRAIN
ELBOW
PLUG
AB
CD

1-4
INSTALLATION OF THE INDOOR UNIT
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.
Routing Of Piping
Remove the screw holding the front panel.
Maintenance &
Servicing Space
Air Flow
Direction
Higher Than
Eye Level
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
align 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.
Correct
1
23
4
5
Piping Routing
Right & Rear Side Routing
Drain hose
Fix with vinyl tape
Unit piping
50.0 mm 50.0 mm
50.0 mm
Hole With Cone Drill
Indoor Side Outdoor Side
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 di-
ameter with a cone drill, slightly lower on the outside wall
(see figure).
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.
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.
End
Dipped
Into
Water
Water
Leaking
Water
Leaking
Water
Leaking
Wrong Wrong Wrong
Drain
Water Drainage
Screw position in the wall
Ø 65.0 mm Hole in the wall
1. Hook the unit onto the installation plate.
Screw position in the wall
72.0
Centre Line
Ø 65.0 mm Hole in the wall