McQuay IM-MSDT-0501 User manual

MULTI SPLIT TYPE AIR CONDITIONER
INSTALLATION MANUAL
Group: MULTI SPLIT
Part Number: A08019025531
Date: MAY 2001
IM-MSDT-0501-McQuay
© 2001 McQuay International

i
Indoor Unit (WMS)
Installation Plate
Front View
Top View
Side View
A
B
E
C
D
Outdoor Unit 4MSD/MSD 1010/1015/1515 A/AR
OUTLINE AND DIMENSIONS
Outdoor Unit (MSD 1020 A / 1520 A / 2020 A)
DIMENSION (mm) A B C D E
WMS10F/FR 815,0 290,6 180,8 719,4 278,0
WMS15F/FR
WMS20C/CR 1043 372 189 897,5 320
WMS20F/FR 1060,0 310,0 200,0 911,7 293,9 All dimensions are in mm

ii
Outdoor Unit (MST 101010 A / 101015 A / 101515 A / 151515 A / 101020 A &
4MST 101010 A / AR / 101015 A / AR / 101515 A / AR / 151515 A /AR)
NOTICE
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
r
r
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
’
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
.
G
er
ä
ä
ä
tes
ää
getrennt vom Hausm
ü
m
ll bei Ihrer
ö
r
tlichen
M
ü
lldeponie bzw. Ihrem
ö
r
tliche
n
ä
ndiges Abfall-Amt. Dieser
ää
Hinweis gilt nur f
ü
f
f
rL
ä
nder der Europ
ää
ä
ischen Union
.
п
р
авилам
и
п
о
у
тилизаци
и
отхо
д
о
в
(WEEE Re
g
ulations).
и
.
,
.
Э
т
и
п
р
авил
а
Ев
р
опейског
о
.
Sharp edges and coil surfaces are potential locations which may cause injury
hazards. Avoid from being in contact with these places.
!Caution
Les bords coupants et les surfaces du refroidisseur tubulaire présentent un
risque de blessure. Mieux vaut éviter le contact avec ces endroits.
! Avertissement
Scharfe Kanten und Wärmetauscherflächen stellen eine Gefahrenquelle dar. Jeglicher
Kontakt mit diesen Stellen ist zu vermeiden.
!Vorsicht
Per preservarsi da eventuali ferite, evitare di toccare gli spigoli affilati e la superficie
dei serpentini.
!Cautela
Los Bordes afilados y la superficie del serpentín pueden producir lesiones. Evite
tocarlos.
!Cuidado
Острые края и поверхности змеевиков являются
потенциальными местами нанесения травм. Остерегайтесь
контакта с этими местами.
!Осторожно

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
MULTI SPLIT TYPE AIR CONDITIONER
MODEL
Part No.:A08019025531 IM-MSDT-0501 (2)-McQuayPart No.:A08019025531 IM-MSDT-0501 (2)-McQuay
COOLING UNIT
OUTDOOR UNIT
MSD1010A / MMSD1010A
MSD1015A / MMSD1015A
MSD1515A / MMSD1515A
MSD1020A / MMSD1020A
MSD1520A / MMSD1520A
MSD2020A / MMSD2020A
4MSD1010A / M4MSD1010A
4MSD1015A / M4MSD1015A
4MSD1515A / M4MSD1515A
MST101010A / MMST101010A
MST101015A / MMST101015A
MST101515A / MMST101515A
MST151515A / MMST151515A
MST101020A / MMST101020A
4MST101010A / M4MST101010A
4MST101015A / M4MST101015A
4MST101515A / M4MST101515A
4MST151515A / M4MST151515A
INDOOR UNIT
WMS10F / MWMS010F
WMS15F / MWMS015F
WMS20C / MWMS020C
WMS20F / MWMS020F
HEAT PUMP UNIT
OUTDOOR UNIT
MSD1010AR / MMSD1010AR
MSD1015AR / MMSD1015AR
MSD1515AR / MMSD1515AR
MSD1520AR / MMSD1520AR
4MSD1010AR / M4MSD1010AR
4MSD1015AR / M4MSD1015AR
4MSD1515AR / M4MSD1515AR
4MST101010AR / M4MST101010AR
4MST101015AR / M4MST101015AR
4MST101515AR / M4MST101515AR
4MST151515AR / M4MST151515AR
INDOOR UNIT
WMS10FR / MWMS010FR
WMS15FR / MWMS015FR
WMS20CR / MWMS020CR
WMS20FR / MWMS020FR

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 area 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 unit panel is covered back after service or installation.
Unsecured panel will cause unit to operate noisily.
CONTENTS
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 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 INSTALL OR USE THE AIR CONDITIONER UNIT IN A LAUNDRY ROOM.
- Outline and Dimensions page i-ii
- Safety Precautions page 2
- Installation Diagram page 3
- Installation of Outdoor Unit page 3
- Installation of Indoor Unit page 3
- Refrigerant Piping page 4
- Electrical Wiring Connection page 6
- Special Precautions When Dealing With R407C Unit page 7
- Vacuuming and Charging page 8
- Indicator Light page 8
- Air Conditioner Unit Operation page 11
- Standard Operating Conditions page 11
- Service and Maintenance page 12
- Trouble-Shooting page 12

1-3
English
INSTALLATION DIAGRAM
Air Filter
Air Intake
Grille
Air Discharge
Louver
Air Discharge
Grille
Front Frame
Back Housing
Main Switch
ON/OFF Switch
Drain Hose
Return Air
Air Discharge Nozzle
Indicator
Light
Signal Receiver
Refrigerant Piping
Indoor Unit
Outdoor Unit
The outdoor unit must be installed such that there is no short
circuit of the hot discharge air or obstruction to the smooth
air flow. Please follow the installation clearance shown
below. 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
Obstacle
Obstacle
Return Air
Discharge Air
Obstacle
Obstacle
Return Air
Service
Access
INSTALLATION OF INDOOR UNIT
Plate Mounting
Installation
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.
Hole With Cone Drill
Indoor Side Outdoor Side
Screw position in the
wall
Ø 65.0 mm Hole in
the wall
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).
Piping Routing
INSTALLATION OF OUTDOOR UNIT
Maintenance &
Servicing Space
Air Flow
Direction
Higher Than
Eye Level
50.0 mm 50.0 mm
50.0 mm
Routing Of Piping
Remove the screw holding the front panel.
Screw position in the wall
72.0
Centre Line
Ø 65.0 mm Hole in the wall

1-4
Water Drainage
Wrong Wrong Wrong
Correct
Drain
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.
Drain hose Fix with vinyl tape
Unit piping
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.
Right & Rear Side Routing
1. Hook the unit onto the installation plate.
2. A unit support plate on the
installation plate can be used to
hold the unit slanted (See figures)
to ease the piping installation
work.
3. Fix the screw underneath
after completion of
installation.
Piping Length & 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, and as a result the compressor may become
defective. Always choose the shortest path and follow the recommendations as tabulated on next page :
Remark:The refrigerant that has been pre-charged in the outdoor unit is for piping length up to 5 m.
REFRIGERANT PIPING
L1 L2
Indoor Unit
Outdoor Unit
Vertical
Height
Difference
Max. H
Vertical
Height
Difference
Max. H
L1 L2
Indoor Unit
L3
Outdoor Unit

1-5
English
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
1/2” 12.70 1.9 1.3
5/8” 15.88 2.2 1.7
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.
• 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.
Remove Burr
Cutting copper tube
Indoor Piping Flare Nut
Flare Tube
Flare Joint
Spanar Torque Wrench
1/4t
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
Copper tube
Swaging Block D
A
4MSD/MSD1010A/AR 4MSD/MSD1015A/AR 4MSD/MSD1515A/AR MSD1020A/AR MSD1520A/AR MSD2020A/AR
10m / 10m 10m / 10m 10m / 10m 10m / 15m 10m / 15m 15m / 15m
5m / 5m 5m / 5m 5m / 5m 5m / 8m 5m / 8m 8m / 8m
10 / 10 10 / 10 10 / 10 10 / 10 10 / 10 10 / 10
1/4” / 1/4” 1/4” / 1/4” 1/4” / 1/4” 1/4” / 1/4” 1/4” / 1/4” 1/4” / 1/4”
3/8” / 3/8” 3/8” / 1/2” 1/2” / 1/2” 3/8” / 5/8” 1/2” / 5/8” 5/8” / 5/8”
Model
Maximum Length, L
Max. Elevation, H
Max. Number of Bends
Liquid Pipe Size
Gas Pipe Size
4MST/MST101010A/AR 4MST/MST101015A/AR 4MST/MST101515A/AR 4MST/MST151515A/AR MST101020A
10m / 10m /10m 10m / 10m /10m 10m / 10m /10m 10m / 10m /10m 10m / 10m /15m
5m / 5m / 5m 5m / 5m / 5m 5m / 5m / 5m 5m / 5m / 5m 5m / 5m / 8m
10 / 10 / 10 10 / 10 / 10 10 / 10 / 10 10 / 10 / 10 10 / 10 / 10
1/4” / 1/4” / 1/4” 1/4” / 1/4” / 1/4” 1/4” / 1/4” / 1/4” 1/4” / 1/4” / 1/4” 1/4” / 1/4” / 1/4”
3/8” / 3/8” / 3/8” 3/8” / 3/8” / 1/2” 3/8” / 1/2” / 1/2” 1/2” / 1/2” / 1/2” 3/8” / 3/8” / 5/8”
Model
Maximum Length, L
Max. Elevation, H
Max. Number of Bends
Liquid Pipe Size
Gas Pipe Size

1-6
COMP1
COMP N2 N1 L
L1 N1 COMP2 L2 N2 L N
COMP N2 N1 L
COMP3 L3 N3
COMP N2 N1 L
COMP1
COMP N2 N1 L
L1 N1 COMP2 L2 N2 L N
COMP N2 N1 L
Outdoor Unit
Terminal Block
4MSD / MSD 1010A / 1015A / 1515A / 1020A / 1520A / 2020A
Indoor Unit 1 Indoor Unit 2
Power Supply
Indoor Unit 1
ELECTRICAL WIRING CONNECTION
Cooling Unit
IMPORTANT : The figures shown are for information purpose 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 type of conductors used.
Indoor Unit
Terminal Block
Indoor Unit 2 Indoor Unit 3
Indoor Unit
Terminal Block
Outdoor Unit
Terminal Block
Power Supply
4MST / MST 101010A / 101015A / 101515A / 151515A / 101020A
COMP N2 N1 L4WV OF
N1
COMP N2 N1 L4WV OF
4WV2 OF24WV1 OF1 COMP1 COMP2 N2 L N
4MSD / MSD 1010AR / 1015AR / 1515AR / 1020AR / 1520AR
Indoor Unit 1 Indoor Unit 2
Indoor Unit
Terminal Block
Outdoor Unit
Terminal Block
Power Supply
Power Supply
There must be a double pole
switch with minimum 3mm
contact gap and fuse/circuit
breaker as recommended in
the fixed installation circuit.
!
There must be a double pole
switch with minimum 3mm
contact gap and fuse/circuit
breaker as recommended in
the fixed installation circuit.
!
There must be a double pole
switch with minimum 3mm
contact gap and fuse/circuit
breaker as recommended in
the fixed installation circuit.
!
There must be a double pole
switch with minimum 3mm
contact gap and fuse/circuit
breaker as recommended in
the fixed installation circuit.
!