38MGQ / 40MAQ / 40MBC / 40MBD / 40MBF
Multi---Zone Ductless System
Sizes 18K, 24K, 30K, 36K and 48K
Installation Instructions
NOTE: Read the entire instruction manual before starting the installation.
TABLE OF CONTENTS
PAGE
SAFETY CONSIDERATIONS 2.........................
GENERAL 2.........................................
PIPING REQUIREMENTS 3............................
ELECTRICAL DATA 4................................
DIMENSIONS 6--12...................................
CLEARANCES 13-- 15.................................
INSTALLATION GUIDE 16.............................
INSTALLATION TIPS 16...............................
HIGH WALL INDOOR UNIT INSTALLATION 16...........
CASSETTE INDOOR UNIT INSTALLATION 18............
INDOOR UNIT MAIN BODY INSTALLATION 18..........
INDOOR UNIT INSTALLATION 19......................
DUCTED INDOOR UNITS INSTALLATION 24............
FAN PERFORMANCES (DUCTED UNITS) 28.............
FLOOR CONSOLE INDOOR UNIT INSTALLATION 30.....
INSTALLING THE INDOOR UNIT 31....................
OUTDOOR UNIT INSTALLATION 32....................
START--UP 35........................................
CONNECTION DIAGRAMS 36.........................
OUTDOOR UNIT DIAGNOSTIC GUIDES 38..............
2
SAFETY CONSIDERATIONS
Installing, starting up, and servicing air--conditioning equipment
can be hazardous due to system pressures, electrical components,
and equipment location (roofs, elevated structures, etc.).
Only trained, qualified installers and service mechanics should
install, start--up, and service this equipment.
Untrained personnel can perform basic maintenance functions such
as cleaning coils. All other operations should be performed by
trained service personnel.
When working on the equipment, observe precautions in the
literature and on tags, stickers, and labels attached to the
equipment.
Follow all safety codes. Wear safety glasses and work gloves. Keep
quenching cloth and fire extinguisher nearby when brazing. Use
care in handling, rigging, and setting bulky equipment.
Read these instructions thoroughly and follow all warnings or
cautions included in literature and attached to the unit. Consult
local building codes and current editions of the National Electrical
Code ( NEC ) NFPA 70. In Canada, refer to current editions of the
Canadian electrical code CSA 22.1.
Recognize safety information. This is the safety--alert symbol
!
.
When you see this symbol on the unit and in instructions or
manuals, be alert to the potential for personal injury. Understand
these signal words: DANGER, WARNING, and CAUTION.
These words are used with the safety--alert symbol. DANGER
identifies the most serious hazards which will result in severe
personal injury or death. WARNING signifies hazards which could
result in personal injury or death. CAUTION is used to identify
unsafe practices which may result in minor personal injury or
product and property damage. NOTE is used to highlight
suggestions which will result in enhanced installation, reliability, or
operation.
!
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
Before installing, modifying, or servicing system, main
electrical disconnect switch must be in the OFF
position. There may be more than 1 disconnect switch.
Lock out and tag switch with a suitable warning label.
CAUTION
!
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Do not bury more than 36 in. (914 mm) of refrigerant pipe
in the ground. If any section of pipe is buried, there must be
a 6 in. (152 mm) vertical rise to the valve connections on
the outdoor units. If more than the recommended length is
buried, refrigerant may migrate to the cooler buried section
during extended periods of system shutdown. This causes
refrigerant slugging and could possibly damage the
compressor at start--up.
GENERAL
These instruc t ions cove r the installation, start--up and servicing of the
multi--zone outdoor unit connect ed to up to five indoor fan coil units.
For approved combinations , please refer to the Product Data.
3
PIPING REQUIREMENTS
IMPORTANT: Both refrigerant lines must be insulated separately.
The minimum refrigerant line length between the indoor and outdoor units is 10 ft. (3 m). The following lengths are allowed.
Table 1—Piping Lengths
System size 18K 27K 36K 48K
Piping
Min. Piping Length per each indoor unit ft (m) 10 (3) 10 (3) 10 (3) 10 (3)
Standard Piping Length per each indoor unit ft (m) 25 (7.5) 25 (7.5) 25 (7 5) 25 (7.5)
Max. outdoor---indoor height difference
(OU higher than IU)
ft (m) 32(10) 32(10) 32(10) 32(10)
Max. outdoor---indoor height difference
(IU higher than OU)
ft (m) 49(15) 49(15) 49(15) 49(15)
Max. height different between indoor units ft (m) 32(10) 32(10) 32(10) 32(10)
Max. Length per each indoor unit ft (m) 66(20) 82(25) 98(30) 98(30)
Max. Piping Length with no additional
refrigerant charge per System (Stan dard Piping
length x No. of Zones)
ft (m) 49(15) 74(22.5) 98(30) 123(37.5)
Total Maximum Piping Length per system Ft. (m) 98(30) 147(45) 196(60) 245(75)
Additional refrigerant charge
(between Standard – Max piping length)
Oz/ft (g/m) 0.16(15) 0.16(15) 0.16(15) 0.16(15)
Gas Pipe Size in (mm) 3/8*2 (9.52*2) 3/8*2 (9.52*3)
1/2 *1 (12.7*1)
+ 3/8*3 (9.5*3)
1/2 *2 (12.7*2)
+ 3/8*3 (9.5*3)
Refrigerant
Liquid Pipe Size in (mm) 1/4 *2 (6.35*2) 1/4 *3 (6.35*3) 1/4 *4 (6 35*4) 1/4 *5 (6.35*5)
Refrigerant Type R410A R410A R410A R410A
Charge Amount Lbs (kg) 4.19 (1.9) 6.17 (2 8) 7.94 (3.6) 10.14 (4.6)
NOTE: The refrigerant charge included is adequate for the number of zones multiplied by the maximum piping length per zone with no additional
refrigerant.
Table 2—Indoor High Wall
Indoor High Wall
SIZE 9 12 18 24
Pipe Connection Size --- Liquid in. 1/4” 1/4” 1/4” 3/8”
Pipe Connection Size --- Suction in. 3/8” 1/2” 1/2” 5/8”
Table 3—Indoor Cassette
Indoor Cassette
SIZE 9 12 18
Pipe Connection Size --- Liquid in. 1/4” 1/4” 1/4”
Pipe Connection Size --- Suction in. 3/8” 1/2” 1/2”
Table 4—Indoor Ducted
Indoor Ducted
SIZE 9 12 18 24
Pipe Connection Size --- Liquid in. 1/4” 1/4” 1/4” 3/8”
Pipe Connection Size --- Suction in. 3/8” 1/2” 1/2” 5/8”
Table 5—Indoor Floor Console
Indoor Floor Console
SIZE 9 12
Pipe Connection Size --- Liquid in. 1/4” 1/4”
Pipe Connection Size --- Suction in. 3/8” 1/2”
Refrigerant Piping:
Line sets to be sized based on the connection size of the indoor unit. Each pipe should be insulated individually.
Conversion Joints:
The outdoor unit may include a package of conversion joints to facilitate installation of various sizes of fan coils. These joints are to be
connected to the outdoor unit as needed to match the line set size.
Table 6—Conversion Joints
NUMBER OF ZONES SIZE ADAPTOR QU ANTITY
2zone 18 3/8”------1/2” 2
3zone 27 3/8”------1/2” 3
4zone 36
3/8”------1/2” 3
1/2”------3/8” 1
5zone 48
1/2”------3/8” 2
1/4”------3/8” 2
1/2”------5/8” 2
3/8”------1/2” 3
Table 7—Additional Refrigerant Charge
Unit Size Number of Zones Charge oz. (kg.)
Additional Charge Required
After ft. (m)
Additional Charge
oz./ft. (g/m)
Tot al Ma xi mu m P ip-
ing Length ft. (m.)
18 2 67.02 (1.9) 49 (15) 0.16 (15) 98 (30)
27 3 98.76 (2.8) 74 (22.5) 0.16 (15) 147 (45)
36 4 126.98 (3.6) 98 (30) 0.16 (15) 196 (60)
48 5 162.26 (4.6) 123 (37.5) 0.16 (15) 245 (75)
Additional Refrigerant Calculation
Sum Total Liquid Pipe ft. (m) --- Additional Charge Required After ft. (m.) x Additional Charge oz./ft. (g/m) 0.16 (15)
NOTES:
If the calculation results in a negative number no additional refrigerant is required.
ELECTRONIC EXPANSION VALVES IN THE OUTDOOR UNIT ARE USED AS METERING DEVICES.
ELECTRICAL DATA
Table 8—High Wall
UNIT SIZE
9
12
18
24
30
UNIT SIZE
9
12 1.03 0.073 55
18 0.83 0.12 90
24 0.83 0.12 90
36 1.263 0.2 150
48 2.23 0.32 240
UNIT SIZE
9
12
18
UNIT SIZE
9
12
SYSTEM VOLTAGE OPERATING VOLTAGE INDOOR FAN
VOLT/PHASE/HZ MAX / MIN V --- P H --- H Z FLA HP W
0.07 0.027 20
0.07 0.027 20
208---230/1/60 253 / 187 208---230/1/60
0.17 0.077 58
0.23 0.08 60
0.23 0.08 60
Table 9—Ducted
SYSTEM VOLTAGE OPERATING VOLTAGE INDOOR FAN
VOLT/PHASE/HZ MAX / MIN FLA HP W
1.03 0.073 55
208---230/1/60 253 / 187
Table 10—Cassette
SYSTEM VOLTAGE OPERATING VOLTAGE INDOOR FAN
VOLT/PHASE/HZ MAX / MIN V --- P H --- H Z FLA HP W
0.146 0.061 46
208---230/1/60 253 / 187 208---230/1/60
0.146 0.061 46
0.146 0.061 46
Table 11—Floor Console
SYSTEM VOLTAGE OPERATING VOLTAGE INDOOR FAN
VOLT/PHASE/HZ MAX / MIN V --- P H --- H Z FLA HP W
208---230/1/60 253 / 187 208---230/1/60
0.21 0.027 20
0.21 0.027 20
Table 12—Multi Zone Outdoor Unit
UNIT SIZE
18
27 8.85
36 13.4
48 13.5
*Permissible limits of the voltage range at which the unit will operate satisfactorily.
LEGEND
FLA - Full Load Amps
LRA - Locked Rotor Amps
MCA - Minimum Circuit Amps
RLA - Rated Load Amps
SYSTEM VOLTAGE OPERATING VOLTAGE COMPRESSOR OUTDOOR FAN MCA
VOLT/PHASE/HZ MAX / MIN RLA FLA HP W
208---230/1/60 253 / 187
9.7
MAX
FUSE/CB
AMP
3 0.16 50 15 20
3 0.16 120 19 25
3 0.16 120 27 40
3 0.11 85 29 50
4
!
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
S Wires should be sized based on NEC and local codes.
S Use copper conductors only with a minimum 600 volt .
rating and 2/64--inch thick insulation.
!
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage
or improper operation.
S Be sure to comply with local codes while running wire from
indoor unit to outdoor unit.
S Every wire must be connected firmly. Loose wiring may
cause terminal to overheat or result in unit malfunction. A
fire hazard may also exist. Therefore, be sure all wiring is
tightly connected.
S No wire should be allowed to touch refrigerant tubing,
compressor or any moving parts.
S Disconnecting means must be provided and shall be located
within sight and readily accessible from the air conditioner.
S Connecting cable with conduit shall be routed through hole
in the conduit panel.
CAUTION
CAUTION
All wires must be sized per NEC (National Electrical Code) or
CEC (Canadian Electrical Code) and local codes. Use the
Electrical Data table MCA (minimum circuit amps) and MOCP
(maximum over current protection) to correctly size the wires and
the disconnect fuse or breakers respectively.
Per the caution note, use only copper conductors with a minimum
600 volt rating and 2/64 --inch thick insulation. The use of BX
cable is not recommended.
Recomme nde d Connection Method for Power and
Communication --W i ring -- Power and Communication Wiring:
The main power is supplied to the outdoor unit. The field supplied
14/3 power/communication wiring from the outdoor unit to indoor
unit consists of four (4) wires and provides the power for the
indoor unit. Two wires are high voltage AC power; one is
communication wiring and the other is a ground wire.
Recomme nde d Connection Method for Power and
Communication Wiring (To minimize communicati on wiring
interference)
Power Wiring:
The main power is s upplied to the outdoor unit. The field supplied
power wiring from the outdoor unit to the indoor unit consist s of three
(3) wires and provides the power for the indoor unit. Two wires are
high voltage AC power and one is a ground wire. To minimize a
voltage drop, t he factory recomm ended wire size is 14/2 stranded with
a ground.
Communication Wiring:
A separate shielded copper conductor only, with a minimum 600
volt rating and 2/64--inch thick insulation, must be used as the
communication wire from the outdoor unit to the indoor unit.
Please use a separate shielded 16GA stranded control wire.
5
6
DIMENSIONS -- INDOOR
Fig. 1 --- High Wall Dimensions
Table 13—High Wall Dimensions
UNIT SIZE W In. (mm) D In. (mm) H In. (mm)
OPERATING WEIGHT
Lbs. (kg)
9K/12K 32 9(835) 7.8(198) 11 0(280) 19.2(8.7)
18K 39 0(990) 8.6(218) 12.4(315) 26.5(12.0)
24K 46.7(1186) 10.2(258) 13.4(343) 40.8(18.5)
Fig. 2 --- Cassette Dimensions
Table 14—Cassette Dimensions
UNIT SIZE
9K 12K 18K
BODY PANEL BODY PANEL BODY PANEL
Height in(mm) 10.24 (260) 1.97 (50) 10.24 (260) 1.97 (50) 10.24 (260) 1.97 (50)
Width in(mm) 22.44 (570) 25.47 (647) 22.44 (570) 25.47 (647) 22.44 (570) 25.47 (647)
Depth in(mm) 22.44 (570) 25.47 (647) 22.44 (570) 25.47 (647) 22.44 (570) 25.47 (647)
Operating
Weight
lbs(kg) 35.27 (16) 5.51 (2.5) 35.27 (16) 5.51 (2.5) 39.68 (18) 5.51 (2.5)
7
DIMENSIONS -- INDOOR (CONTINUED)
Fig. 3 --- Ducted Dimensions
Table 15—Ducted Dimensions
OUTLINE DIMENSIONS
in(mm)
AIR OUTLET
OPENING SIZE
in(mm)
AIR RETURN
OPENING SIZE
in(mm)
HANGAR
BRACKETS
in(mm)
REFRIGERANT PIPE
LOCATIO NS
in(mm)
OPERATING
WEIGHT
Lbs. (kg)
in(mm)
SIZE A B C D E F G H I J K L M H1 H2 W1 W2
9
27.6
(700)
8 2
(210)25(635)
22.4
(570)
2.5
(65)
19.4
(493)
1 3
(35)
4 6
(119)
23.4
(595)
7.8
(200)
3.1
(80)
29.1
(740)
13.8
(350)
4.7
(120)
5.6
(143)
3.7
(95)
5.9
(150)
39.90 (18.1)
12
27.6
(700)
8 2
(210)25(635)
22.4
(570)
2.5
(65)
19.4
(493)
1 3
(35)
4 6
(119)
23.4
(595)
7.8
(200)
3.1
(80)
29.1
(740)
13.8
(350)
4.7
(120)
5.6
(143)
3.7
(95)
5.9
(150)
39.90 (18.1)
18
36.2
(920)
8 2
(210)25(635)
22.4
(570)
2.5
(65)
19.4
(493)
1 3
(35)
4 6
(119)
32.0
(815)
7.8
(200)
3.1
(80)
37 8
(960)
13.8
(350)
4.7
(120)
5.6
(143)
3.7
(95)
5.9
(150)
50.7
(23)
24
36.2
(920)
10.6
(270)25(635)
22.4
(570)
2.5
(65)
19.4
(493)
1 3
(35)
7 0
(179)
32.0
(815)
10.2
(260)
0.7
(20)
37 8
(960)
13.8
(350)
4.7
(120)
5.6
(143)
3.7
(95)
5.9
(150)
57 32
(26)
DIMENSIONS -- INDOOR (CONTINUED)
Fig. 4 --- Floor Console Dimensions
Table 16—Floor Console Dimensions
UNIT SIZE 9 12
Height in (mm) 8.27 (210) 8.27 (210)
Width in (mm) 27.56 (700) 27.56 (700)
Depth in (mm) 23.62 (600) 23.62 (600)
Operating Weight Lbs. (kg) 32.41 (14.7) 32.41 (14.7)
8
DIMENSIONS -- OUTDOOR
Table 17— Dimensions
UNIT SIZE 18 27 36 48
Height in (mm) 27.56(700) 31.89(810) 31.89(810) 36.93(1369)
Width in (mm) 33.27(845) 37.20(945) 37.20(945) 53.9(938)
Depth in (mm) 12.60(320) 15.55(395) 15.55(395) 15.43(392)
W e i g h t --- N e t lbs (kg) 114.63(52) 154.76(70.2) 169.75(77) 255.50(115.9)
NOTE: No master valves available on Size 18K.
Fig. 5 --- Outdoor Dimensions Size 18
9
DIMENSIONS -- OUTDOOR (CONTINUED)
Suction
Fig. 6 --- Outdoor Dimensions Size 27
10
DIMENSIONS -- OUTDOOR (CONTINUED)
Suction
Fig. 7 --- Outdoor Dimensions Size 36
11
DIMENSIONS -- OUTDOOR (CONTINUED)
Suction
Fig. 8 --- Outdoor Dimensions Size 48
12
CLEARANCES -- INDOOR
NOTE: Allow sufficient space for airflow and unit servicing. See Fig. 9 through 14 for minimum required clearances.
CEILING
6" (0.15m) min.
5
"
(0.13m)
min.
6'
(1.8m)
5
"
(0.13m)
min.
FLOOR
Fig. 9 --- High Wall Clearance
Fig. 10 --- Cassette Unit Clearance
13
14
CLEARANCES -- INDOOR (CONTINUED)
19 7in
/500mm /100mm
3 9in
/1000mm
39 4in
/250mm
9 8in
/200mm
7 9in
/500mm
19.7in
/3m
9 8ft
Fig. 11 --- Ducted Clearance
Fig. 12 --- Ducted Clearance
Fig. 13 --- Floor Console Clearances
CLEARANCES -- OUTDOOR
D
A
B
C
Air-outlet
Fig. 14 --- Clearances Outdoor
Table 18— Clearances Outdoor Values
UNIT
A 24 (609)
B 24 (609)
C 24 (609)
D 4 (101)
E 4 (101)
MINIMUM V ALUE
in. (mm)
Air-inlet
E
15
16
INSTALLATION GUIDE
Up to five fan coil units can be connected to one outdoor unit.
Refer to the Product Data for approved combinations.
Ideal installation locations include:
Each Indoor
Unit
S A location where there are no obstacles near inlet and outlet area.
S A location which can bear the weight of indoor unit.
S Do not install indoor units near a direct source of heat such as
direct sunlight or a heating appliance.
S A location with the appropriate clearances (see Fig. 9 - 13).
Outdoor
Unit
S A convenient location for the instal lation that is not exposed to
strong wind. If unit is exposed to strong winds it is rec om mended
that a field--f abrica t ed wind baffle be used.
S A location which can bear the weight of outdoor unit and where
the outdoor unit can be mounted in a level position.
S A location which provides appropriate clearances (see Fig. 14).
S Do not install the indoor or outdoor units in a location with
special environmental conditions. For those applications, contact
your Sales Representative.
INSTALLATION TIPS
Ideal installation locations include:
Indoor
Unit
S A location where there are no obstacles near inlet and outlet area.
S A location which can bear the weight of indoor unit.
S Do not install indoor units near a direct source of heat such as
direct sunlight or a heating appliance.
S A location which provides appropriate clearances as outlined in
Fig. 9 -- 13.
Outdoor
Unit
S A location which is convenient to installation and not exposed to
strong wind.
S A location which can bear the weight of the outdoor unit and
where the outdoor unit can be mounted in a level position.
S A location with appropriate clearances as outlined in Fig. 14.
S Do not install the indoor or outdoor units in a location with
special environmental conditions. For those applications, contact
your Ductless Split representative.
HIGH WALL INDOOR UNIT INSTALLATI ON
INSTALL MOUNTING PLATE
The mounting plate will look like one of the following figures (15
-- 17) depending on the model size:
Fig. 15 --- Mounting Plate -- Model sizes 09, 12
Fig. 16 --- Mounting Plate -- Model size 18
Fig. 17 --- Mounting Plate -- Model sizes 24, 30
1. Carefully remove the mounting plate, which is attached to
the back of the indoor unit.
2. The mounting plate should be located horizontally and level
on the wall. All minimum spacings shown in Fig. 9--13 and
15 should be maintained.
3. If the wall is block, brick, concrete or similar material, drill
.2” (5 mm) diameter holes and insert anchors for the
appropriate mounting screws.
4. Attach the mounting plate to the wall.
DRILL HOLE IN WALL FOR INTERCONNECTING
PIPING, DRAIN AND WIRING
Refrigerant Line Routing
The refrigerant lines may be routed in any of the four directions
shown in Fig. 19.
For maximum serviceability, it is recommended to have refrigerant
line flare connections and the drain connections on the outside of
the wall that the fan coil can be mounted on.
If the piping is going through the back:
1. Use the mounting plate to dete rmine the pipe hole positi on.
Drill pipe hole diamete r per values given in Fig. 15 through
17. The outside pipe hole is 1/2--in. (13 mm) min. low er t han
inside pipe hol e, so it slants slight ly downward (see Fig. 18).
1/2 in. (13 mm)
Min.
INDOOR
OUTDOOR
A07371
Fig. 18 --- Drill Holes
If the piping is going through the right or left side:
1. Use a small sa w blade to carefully remove the correspondi ng
plastic covering on the side panel and drill the appropriate size
hole where the pipe is going through t he wall.
Pipe holder
Pipe cover
Right piping
Left piping
Pipe cover
Right back piping
Left back piping
1
2
3
4
A14349
Fig. 19 --- Piping Locations
17
INSTALL ALL POWER, INTERCONNECTING
WIRING, AND PIPING TO INDOOR UNIT
1. Run interconnecting piping and wiring from the outdoor
unit to the indoor unit.
2. Run interconnecting cable through the hole in the wall
(outside to inside).
3. Lift the indoor unit into position and route the piping and the
drain thr ough the hol e i n the wa ll (inside to outside ). Fit the
interconnecting wiring into t he back side of the indoor uni t.
4. Put an upper claw at the back of the indoor unit on the
upper hook of the Mounting Plate. Move the indoor unit
from side to side to ensure it is securely hooked.
5. Open the front cover of the indoor unit and remove the field
wiring terminal block cover.
6. Pull the interconnecting wire up from the back of the indoor
unit and position in close to the terminal block on the
indoor unit.
7. Push the lower part of the indoor unit up on the wall, then
move the indoor unit from side to side, up and down to
ensure it is hooked securely (see Fig. 20).
Upper hook
Lower hoo
k
A07347a
Fig. 20 --- Indoor Unit Installation
8. Connect wiring from the outdoor unit per connection
diagram.
9. Replace the field wiring cover and clos e the front cover of the
indoor unit.
10. Connect the refrigerant piping and the drain line outside of
the indoor unit. Complete the pipe insulation at the flare
connection then fasten piping and wiring to the wall as
required. Completely seal the hole in the wall.
11. Connect the drain line. The drain line must not have a trap
anywhere in its length, must pitch downwards, and must be
insulated up to the outside wall (see Fig. 21).
Proper Do not put drain end into waterDo not form a rise
A14351
Fig. 21 --- Proper Drain Hose Installation
NOTE: For proper orientation of the refrigerant piping,
electrical cable and drain lines, refer to Fig. 22.
Interconnecting
Wiring
Drain Piping
Refrigerant Piping
Tape
Indoor unit
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
A07346
Fig. 22 --- Proper Orientation
18
CASSETTE INDOOR UNIT INSTALLATION
Select install location of the indoor unit
1. Obstruct ions shoul d be remove d from the indoor unit ’s intake
or outlet vents so the air can flow throughout the room.
2. Make sure the installation is in accordance with the
requirements of the required clearances on the schematic
diagram.
3. Select a location that can withstand 4 times the weight of
the indoor unit and would not increase the operating noise.
4. Ensure the unit is level.
5. Select a location where condensated coagulated water can
drain easy connect easy with the outdoor unit.
6. Ensure there is enough space for care and maintenance.
Ensure the height between the indoor unit and ground is
3ft. (1mt) or 16ft (5mt).
7. When installing the steeve bolt, check if the install place can
withstand a weight 4 times of the unit’s. If not, reinforce
before installation. Refer to the install cardboard to
determine where the location should be reinforced.
IMPORTANT: To guarantee the good performance, the unit must
be installed by professional personnel according to this instruction.
25 3/5 in (650 mm)
22 4/9 in (570 mm)
15 3/4 in (400 mm)
)mm 075( ni 9/4 22
)mm 406( ni 9/7 32
)mm 056( ni 5/3 52
Install dimension of mode
37 2/5 in ( 950 mm)
37 2/ 5 in (950 m m)
35 in(8 90 mm )
35 in(8 90 mm)
33 in(8 40 mm )
33 in(8 40 mm)
30 5/7 n (7 80 mm)
26 7/9 in (680 m m)
Fig. 23 --- Dimension of ceiling opening and location of the
hoisting screw (M10)
IMPORTANT: The drilling of holes in the ceiling must be
performed by professional personnel.
20 59in/523
22 44in/570
25 47in/647
21.45in/545
22.44in/570
25.47in/647
Fig. 24 --- Drilling Holes
in/
Fig. 25 --- Drilling Holes
Fig. 26 --- Drilling Holes
NOTE: Installation is possible with a ceiling dimension of 23.62
in. (600m) (marked with *). However to achieve a ceiling--panel
overlapping dimension of 0.59in (15mm), the spacing between the
ceiling and the unit should be 0.79 in. (20mm) or less. If the
spacing between the ceiling and the unit is over 0.79 in. (20mm),
attach sealing material in the part or recover the ceiling.
INDOOR UNIT MAIN BODY INSTALLATION
Installation is possible with a ceiling dimension of 23.62 in.
(600mm) (marked with *). However, to achieve a ceiling--panel
overlapping dimension of 0.59 in. (15 mm), the spacing between
the ceiling and the unit should be 0.79 in. (20mm or less). If the
spacing between ceiling and the unit is over 0.79 in. (20mm),
attach sealing material in the part or recover the ceiling.
1. Prepare the ceiling opening needed for installation where
applicable (for existing ceilings).
a. Create the ceiling opening required for installation. From
the side of the opening to the casing outlet, implement the
refrigerant and drain piping and wiring for the remote
controller (unnecessary for wireless type). Refer to each
piping or wiring section.
b. After creatinganopening in the ceiling,itmay be necessary
to reinforce the ceiling beams to keep the ceiling level and
to preventit fromvibrating.Consultthebuilder for details.
2. Install the installation hooks. Use either a M8 or M10 size
bolt.
a. Use expansible hooks, sunken anchors or other field
supplied parts to reinforce the ceiling in order to bear the
weight of the unit.
b. Adjust the clearance from the ceiling before proceeding
further. Installation example see Fig. 27.
19
1
2
3
4
Fig. 27 --- Installation Clearances
(1.) Ceiling slab
(2.) Expansible hook (optional)
(3.) Installation hook (optional)
(4.) False ceiling
NOTE: For other installation than standard installation, contact
your dealer for details.
INDOOR UNIT INSTALLATION
When installing optional accessories, review the list of optional
accessories in the installation manual. Depending on the field
conditions, it may be easier to install optional accessories before
the indoor unit is installed (except for the decoration panel).
However, for existing ceiling, install the fresh air inlet component
kit and branch duct before installing the unit.
1. Install the indoor unit temporarily.
a. Attach the hanger bracket to the suspension bolt. Be sure
to fix it securely by using a nut and washer from the upper
and lower sides of the hanger bracket.
b. Securing the hanger bracket (see Fig. 28).
-
1
3
4
2
Fig. 28 --- Secure the Hanger bracket
(1.) Nut (field supply)
(2.) Washer (field supply)
(3.) Hanger bracket
(4.) Double nuts (field supply, tighten)
2. Secure the paper pattern for installation (for new ceilings
only).
S The paper pattern for installation corresponds with the
measurements of the ceiling opening. Consult the builder
for details.
S The center of the ceiling opening is indicated on the paper
pattern for installation.
S After removing the packaging material from the paper
pattern for installation, attach the paper pattern to the unit
with the attached screws (see Fig. 29).
Fig. 29 --- Attach Screws
(1.) Paper pattern for installation (on some models)
(2.) Center of the ceiling opening
(3.) Screws (supplied with the decoration panel)
3. Adjust the unit to the right position for installation. Refer to
the chapter “Preparations Before Installation”.
4. Check if the unit is horizontally leveled.
a. Do not install the unit tilted. The indoor unit is equipped
with a built--in drain pump and float switch. (If the unit is
tilted againstthe direction of the condensate flow (thedrain
piping side is raised), the float switch may malfunction and
cause water to drip).
b. Check if the unit is leveled at all four corners with a water
level or a water--filled vinyl tube (see Fig. 30).
Fig. 30 --- Ensure Unit is level
(1.) Water level
(2.) Vinyl tube
DRAIN PIPING WORK
Drain Piping Installation
Install the drain piping as shown in Fig. 31 and take steps to
eliminate condensation. Improperly rigged piping could lead to
leaks and eventually wet furniture and belongings.
1 1.5m
1
3~5ft
2
෭
Fig. 31 --- Drain Piping Installation
Fig. 32 --- Hang ing Bar
(1.) Hanging bar
(2.)
1/100 gradient
20
Install the Drain
Pipes
S Keep piping as short as possible and slope it downwards
at a gradient of at least 1/100 so that air may not remain
trapped inside the pipe.
S Keep pipe size equal to or greater than that of the
connecting pipe (PVC pipe, nominal diameter 0.79 in.
(20mm)) /, outside diameter 0.98 in. (25mm).
S Push the drain hose as faraspossible over the drainsocket,
and tighten the metal clamp securely.
Fig. 33 --- Push the drain hose
5. Remove the paper pattern for installation (for new ceiling
only).
(1.) Drain socket (attached to the unit)
(2.) metal clamp
(3.) Drain hose
(4.) Insulation (field supply)
a. Insulate the drain hose inside the building.
b. If the drain hose cannot be sufficiently set on a slope, fit
the hose with drain raising piping (field supply).
c. Ensure the heat insulation work is executed on the
following 2 spots to prevent any possible water leakage
due to dew condensation:
(1.) Indoor drain pipe
(2.) Drain socket.
DRAINAGE HOSE
IMPORTANT: Observe all local sanitary codes when installing
condensate drains.
1. Install the drain hose.
S The drain hos e diameter should be e qual or bigger than the
connection pipe’s . (The diameter of the polythene pipe:Outer
diameter 1 in. (25 mm) Surface thickness
0.06 in. (1.5 mm).
S The drain hose should be short and the drooping gradient
should be lessthan1/100 to prevent the formation of an air
bubble.Ifthe drain hosedoes not has enough of a drooping
gradient, a drain raising pipe should be added.
S To prevent a bend in the drain hose, the distance between the
hoisti ng stand should is 3 to 5 ft. (1 to 1.5 m) (see Fig. 34).
Fig. 34 --- Drain Hose
S Usethe drain hoseandclamp attached.Insert the drainhose
into the drain vent, and then tighten the clamp.
S Entwine the big sponge on the clamp of drain hose to
insulate heat.
S Heatinsulation should be applied to the indoor drain hose.
Sponge(attachment)
Clamp(attachment)
Below 1/6 in (4 mm)
Clamp
Drain hose
Sponge (gray)
Fig. 35 --- Drain Hose
NOTE: Drain Setup pipe
S The installheight of the drain raising pipe should lessthan
21 in. (530 mm).
S The drain raising pipe should form a right angle with the
unit, and distance to unit should not beyond 11.81 in.
(300mm).
0~2.95in
0~75
21in/530
29 5in/750
8 7in/220
Unit: in/mm
Fig. 36 --- Drain Setup Pipe
INSTRUCTION
The slant gradient of the attached drain hose should be within 3 in.
(75 mm) so that the drain hole does not have to endure unnecessary
outside force.
3 in (75 mm)
19 2/3 (500 mm)
Fig. 37 --- Slant Gradient
1. Install the drain hose according to the following process if
several drain hoses join together.
Fig. 38 --- Slant Gradient
2. Check the smoothness of the drain after the installation.
3. Check the drain state by immitting 36 3/5 in. 3 (600 cc)
water slowly from the outlet vent or test hole.
4. Check the drain in the state of refrigerating after installing
the electric circuit.
Unit: in/mm
Fig. 39 --- Drain
1
3
1 Control box lid
4
5
6
7
2 Wiring diagram label
3 Power supply terminal block
4 Clamp for wiring
5 Wiring between units
6 Plastic cover
7 Clamp (field supply)
2
Fig. 40 --- Cassette
21
22
INSTALLATION OF THE DECORATION PANEL
Detach the intake grill
1. Slide the two grille hooks toward the middle of the
decoration panel.
1 Intake grille
2 Grille hook
1
2
Fig. 41 --- Intake Grille
2. Open the intake grille and remove.
Fig. 42 --- Open Intake Grille
Install the decoration
panel
1. Align the indicate ””on the decoration panel to the indicate
““on the unit.
2. Attach the decoration panel to the unit with the supplied
screws as shown in Fig. 43.
1 Decoration panel
2 Screws (M5)(supplied with the panel)
1
2
Fig. 43 --- Attach the Decoration Panel
3. After installing the decoration panel, ensure that there is no
space between t he unit body and decoration panel. Ot herwise
air may leak through the gap and cause dewdrop (see Fig. 44).
Fig. 44 --- Eliminate Space
4. Mount the intake grille. Ensure that the buckles at the back
of the grille are properly seated in the groove of the panel.
Fig. 45 --- Mount the Intake Grille
5. Connect the two wires of the decoration panel to the
mainboard of the unit.
10 core wire5 core wire
Fig. 46 --- Connect two wires
Grille Display
10 Pin Port
Grille Louver Motor Power.
5 Pin Molex plug to be
connected to Control Board
Grille Display.
10 pin Molex plug to be
connected to Control Board.
Grille Louver Motor Power.
5 Pin Port
Wired Remote Controller
(Available as Accessory)
5 Pin Molex plug to be
connected to Wired
Controller’s cable
6. Fasten the control box lid with 2 screws.
Fig. 48 --- Fasten the Control Box Lid
7. Close the intake grille, and close the 2 grille hooks.
Fig. 47 --- Panel Cassette
TEST OPERATION
Ensure the control box lids are closed on the indoor and outdoor
units. After finishing the constructi on of refrigerant piping, drain
piping, and electric wiring, conduct test operation accordingly to
protect the unit.
Test operation after installing decoration
1. Open the gas side stop valve.
2. Open the liquid side stop valve.
3. Electrify crank case heater for 6 hours.
4. Set to cooling operation with the remote controller and start
operation by pushing ON/OFF button.
23
Fig. 49 --- Close the intake grille
panel
5. Check the following points. If there is any malfunction,
A
resolve it according to the chapter “Troubleshooting” in the
owner’s manual.
Owners Manual
The indoor unit
--Whether the switch on the remote controller works well.
--Whether the buttons on the remote controller works well.
--Whether the air flow louver moves normally.
--Whether the room temperature is adjusted well.
--Whether the indicator lights normally.
--Whether the temporary buttons work well.
--Whether there is vibration or abnormal noise during
operation.
--Whether the drainage flows smoothly.
The outdoor unit
--Whether there is vibration or abnormal noise during
operation.
--Whether the generated wind, noise, or condensed of by the
air conditioner negatively impact the neighborhood.
--Whether any of the refrigerant is leaked.
6. Turn off the main power supply after operation.
IMPORTANT: A protection feature prevents the air conditioner
from being activated for approximately 3 minutes when it is
restarted immediately after shut off.
DUCTED INDOOR UNITS INSTALLATION
INSTALLATION OF THE INDOOR DUCTED UNIT
Requirements on the Installation Location
1. Ensure the hanger is strong enough to withstand the weight
of the unit.
2. The drainage pipe is easy for connection.
3. No obstacle is in the inlet/outlet and the air circulation is in
good condition.
4. Ensure the installation space is left for access to
maintenance.
5. It should be far away from where there is a heat source,
leakage of any inflammable, explosive substances, or smog.
6. It is the ceiling type unit (concealed in the ceiling).
7. The power cords and connection lines of the indoor and
outdoor units must be at least 1m away from the TV set or
radio to avoid the image interference and noise (even if 1m
is kept, the noise may be produced due to the strong
electromagnetic wave).
Installation of the Indoor Ducted
1. Insert the M10 expansion bolt into the hole, then knock the
nail into the bolt. Refer to the Outline Dimension Drawings
of the Indoor Unit for the distance between holes and see
Fig. 50 for the installation of the expansion bolt.
Unit
Hanger bolt
nchor
Fig. 51 --- Hanger Bolt
3. Install the indoor unit on the ceiling, as shown in Fig. 52.
48mm
Fig. 52 --- Install the indoor unit
!
S Prior to the installation, make a good pr eparation for all piping
(refrigerant pipe, drain pipe) and wiring (wires of the wired
controller, wires be t w een the indoor and outdoor unit) of the
indoor unit to ma ke the furthe r installation much easier.
S If there is an opening in the ceiling, its better to reinforce it
to keep it flat and prevent it from vibrating. Consult the user
and builder for more details.
S If the ceiling is not strong enough, the unit can be secured on
an angle iron beam.
S If the indoor unit is not installed in the air conditioning
area, place a sponge around the unit to prevent condensing.
The thickness of the sponge depends on the actual
installation environment.
CAUTION
Air conditioning unit
INDOOR DUCTED UNIT HORIZONTAL CHECK
After the installation of the indoor unit, its horizontality must be
checked to make sure the unit keeps a horizontal fore and aft and
maintains an inclination of 5_ toward the drain pipe right and left,
as shown in Fig. 53.
Horizontality Check Device
Fig. 53 --- Horizontal check device
Fig. 50 --- Expansion Bolt
2. Install the hanger on the indoor unit (see Fig. 51).
24
AIR SUPPLY DUCT INSTALLATION
1. Installation of the Rectangular Air Supply Duct
1
2
3
Return air
4 6 83 75
Return air
Supply air
Fig. 54 --- Installation of Air Duct Supply
Table 19—Air Duct
NUMBER NAME NUMBER NAME
1 Hanger 5 Plenum Box
2
3 Canvas Duct 7
4
Return Air
Duct
Return Air
Heat
6 Filter Screen
Supply Duct
8
INSTALL THE ROUND AIR SUPPLY DUCT
Main Air
Air Supply
Outlet
ROUND AIR SUPPLY DUCT INSTALLATION STEPS
1. Pre--install the outlet of the round duct on the transition duct
and then secure it with the tapping screw.
2. Place the transition duct to the air outlet of the unit and
secure it with a rivet.
3. Connect the outlet to the duct and then tighten them with
tape. Other installation details are not covered herein.
!
S The max. length of the duct means the max. length of the air
supply duct plus the max. length of the return air duct.
S The duct is either rectangular or round and connected with
the air inlet/outlet of the indoor unit. Among all air supply
outlets, at least one should remain open. As for the round
duct, it needs a transition duct of which the size should
match with the air supply of the unit. After the fitting of the
transition duct, it is best to keep the round duct 32 ft. (10m)
away from the corresponding diffuser.
CAUTION
1
2
4
5 6 7
3
8 9
Fig. 55 --- Air supply duct
Table 20—Air Duct
NUMBER NAME NUMBER NAME
1
2 Canvas Duct 7
3
4 Hanger 9 Diffuser Joint
5
Return Air
Duct
Return Air
Louver
Air Supply
Duct
6 Tr ansition Duct
Air Supply
Duct
8 Diffuser
25
ADJUST AIR INLET
Take off the ventilation panel and flange, cut off the
staples at the side rail.
V
When installing the fi lter mesh, please plug it into flange
inclined from the air return ope ning, and then push up.
Fig. 56 --- Air Supply Outlet
RETURN AIR DUCT INSTALLATION
1. The default installation location of the rectangular flange is
in the back and the return air cover plate in the bottom as
shown in Fig. 57.
Rectangular Flange
Backward Return Air
Once the filter mesh, with the fixing blocks have been
inserted into the flange position holes, the installation
is complete.
5
Wind supply
Back wind
Install the back wind pipe (a)
4
2
Wind supply
1
5
Install the back wind pipe(b)
Fig. 58 --- Return Air Duct
64
3
1
Back wind
Downward Return Air
Return Air Cover Plate
Fig. 57 --- Return Air Duct
2. If the downward return air is desired, just change the place
of the rectangular flange and the return air cover plate.
3. Connect one end of the return air duct to the return air outlet
of the unit by rivets and the other to the return air louver.
For the sake of the convenience to freely adjust the height, a
cutting of canvas duct will be helpful, which can be
reinforcedandfoldedby8#ironwire.
4. More noise is likely to be produced in the downward return
air mode than the backward return air mode. We suggest
installing a muffler and a plenum box to minimize the noise.
5. The installation method can be chosen with consi dering the
conditions of the building and maintenance etc. (see Fig. 58).
Table 21—Air Duct
NUMBER NAME NUMBER NAME
Return Air Louver
1
(with the filter
4 Indoor Unit
screen)
2 Canvas Duct 5
Air Supply
3 Return Air Duct 6 Access Grille
26
Duct
CONDENSATE PIPE INSTALLATION
1. The condensate pipe should keep a inclination angle of 5 ~
10”, to facilitate the drainage of the condensate water. And
the joints of the condensate pipe should be insulated by the
insulation material to prevent condensing (see Fig. 59).
Insulating Layer for the Condensate Pipe
Pipe Lid
Fig. 59 --- Thermal Insulation of the Condensate Pipe
2. There is a condensa te out let on both the left a nd right sides of
the unit. Onc e one is conf irmed for use, t he other should be
clogged by a rubber plug, bundled by the binding wire a nd
insulated by the insulation material to avoid water leakage.
3. The right outlet is defaulted to be clogged with a plug.
IMPORTANT: No water leakage is allowed on the joint of the
condensate pipe.
DESIGN OF THE DRAIN PIPE
1. The drain pipe should always be kept an inclination angle
(>1/100) to avoid water from gathering.
2. During the connection of the drain pipe and device, do not
impose excessive force on the pipe on one side of t he devic e.
Additionally the pipe should be se cured closely t o the device.
3. The drain pipe can be the ordinary hard PVC pipe which
can be purchased locally. During the connection, inset the
end of the PVC pipe to the drain outlet, then tighten it with
the drain hose and binding wire. Never connect the drain
outlet and the drain hose with adhesive.
4. When the drain pipe is used for multiple devices, the public
section of the pipe should be 4 in. (100 mm) lower than the
drain hole of each device and it is better to use the much
thicker pipe for such a purpose.
DRAIN PIPE INSTALLATION
1. The diameter of the drain pipe should be larger than or
equal to that of the refrigerant pipe (PVC pipe, outer
diameter: 1 in. (25 mm), wall thickness
2. The drain pipe should be a short as possible and with at
least a 1/100 degree of slope to avoid forming air pockets.
3. If the proper degree of slope of the drain pipe is not
allowed, a lift pipe should be installed.
4. A distanc e of .9 ft.~6.6 ft. (1.5 m~2 m) should be kept
betwe en the hange rs to avoid the drain hose from making a
turn.
4.9ft~6.6ft/1.5m~2m
Fig. 60 --- Slope Degree
Fig. 61 --- Slope Degree
5. Insert the drain hose into the drain hole and tighten it with
clamps.
6. Wrap the clamps with large amount of sponge for thermal
insulation.
7. The drain hose inside the room also should be insulated.
Clamp (accessory)
0.06 in. (1.5 mm).
Sponge (accessory)
Clamp
(accessory)
Sponge (gray) Drain Hose
Fig. 62 --- Drain Hose Insulation
27
Max. 4mm
28
FAN PERFORMANCES (DUCTED UNITS)
Static pressure curve (static pressure deducted)
Table 22—Fan Performances
Static Pressure
Range In. WG (Pa)
Size 0 1 2 3 4
9&12 0.02 (5) 0.04 (10) 0.08 (20) 0.12 (30) 0.16 (40) 0---0.18 (0---45)
18 0.04 (10) 0.10 (25) 0.14 (35) 0.18 (45) 0.22 (55) 0---0.28(0 ---70)
24 0.04 (10) 0.10 (25) 0.16 (40) 0 22 (55) 0.28 (70) 0---0.40 (0---100)
Factory Setting √
Table 23—System Sizes
Systemsize 9K 12K 18K 24K
High
CFM 335 370 520 820
CMH 570 629 884 1394
Medium
CFM 290 320 430 620
CMH 493 544 731 1054
Low
CFM 240 260 360 520
CMH 408 442 612 884
Size
9K
29
Size
12K
30
Size
18K
31
Size
24K
32
33
FLOOR CONSOLE INDOOR UNIT
INSTALLATION
Follow these key steps when selecting a location for the unit.
S Select a place where cool air can be distributed throughout
the room.
S Select a place where condensation water is easily drained
away.
S Select a site that can handle the weight of the indoor unit.
S Select a place which has easy access for maintenance.
Indoor unit
The indoor unit should be sited in a place where:
1. The restrictions for the installation specified in the indoor
unit installation drawings are met.
2. Both the air intake and exhaust have clear paths.
3. The unit is not in the path of direct sunlight.
4. The unit is away from a heat or steam source.
5. There is no source of machine oil vapour (this may shorten
indoor unit life).
6. Cool (warm) air is circulated throughout the room.
7. The unit is away from electronic ignition type fluorescent
lamps (inverter or rapid stert type) as they may shorten the
remote controller range.
8. The unit is at least 3 28 ft. (1 m) away from any television or
radio set (unit may cause interference with the picture or
sound).
CAUTIONS FOR INSTALLATION WHERE AIR
CONDITIONER TROUBLE IS LIABLE TO OCCUR
S Do not install in areas with or near an abundance of oil.
S Do not install in areas with an acid base area.
S Do not install in areas with an irregular electrical supply.
Location for securing the installation
panel
<0.24in
/6mm
7 7in/195mm
Fig. 63 --- Schematic Drawing of Hooks
REFRIGERANT PIPING
Use the following steps to connect the refrigerant pipe.
1. Drill a hole (3”) in diameter) for piping and electrical
routing.
2. The location of the hole is different depending on which
side of the pipe is taken out.
3. For piping, see Connecting the Refrigerant Pipe, under
Indoor Unit Installation (1).
4. Allow space around the pipe for a easier indoor unit pipe
connection.
CAUTION
!
The suggested shortest pipe length is 8.2 ft. (2.5 m) to avoid
noise from the outdoor unit and vibration. (Mechanical
noise and vibration may occur depending on how the unit is
installed and the environment in which it is used).
See the installation manual for the outdoor unit for the
maximum pipe length.
BORING A WALL HOLE AND INSTALLING WALL
EMBEDDED PIPE
S For wallscontaining metal frame or metalboard ,be sure to
use a wall embedded pipe and wall cover in the
feed-- through hole to prevent water leakage.
S Be sure to caulk the gaps around the pipes with caulking
material to prevent water leakage.
1. Bore a feed--through hole of 3” in the wall so it has a down
slope toward the outside.
2. Insert a wall pipe into the hole.
3. Insert a wall cover into wall pipe.
Inside Outside
Caulking
Wall embedded pipe
(field supply)
Wall hole cover
Wall embedded pipe
(field supply)
3”
Fig. 64 --- Wall Embedded Pipe
4. After completing refrigerant piping, wiring, and drain
piping, caulk pipe hole gap with putty.
DRAIN PIPING
1. Use commercial regid polyvinyl chloride pipe general VP
20 pipe, outer diameter 1 in. (26 mm), inner diameter 4/5 in.
(20 mm) for the drain pipe.
2. The drai n hose (out e r diamet er 5/7 in. (18 mm) at connecting
end, 8 2/3 in. (220 mm) long) is supplied with the indoor unit.
Prepare the drain pipe picture below position.
3. The drain pipe should be incli ned downward so that water
flows smoothly without any accumulation. (Should not be a
trap.)
4. Insert the drain hose to this depth so it will not be pulled out
of the drain pipe.
5. Insulate the indoor drain pipe with insulation material to
prevent condensation.
6. Remove the air filters and pour some water into the drain
pan to check the water flows smoothly.
4 in (100 mm)
Drain hose
4 in (100 mm)
6 in (150 mm)
Vinyl chloride
drain pipe
2 in (50 mm)
or more
Reducer
Must be no trap
Do not touch water
Fig. 65 --- Tr ap
INSTALLING THE INDOOR UNIT
1. Preparation
S Open the front panel, remove the 4 screws and dismount
the front grille while pulling it forward.
Fig. 66 --- Remove the screws
For Side Piping
S Remove the pillars.
(1.) Remove the screws.
(2.) Remove the upper casing (2 tabs).
(3.) Remove the left and right casings (2 tabs on each
side).
(4.) Remove the slit portions on the bottom frame and
casings using nippers.
(5.) Return by following the steps in reverse order
(3>2>1).
Casing
Remove the pillar
Fig. 69 --- Remove the pillar
Bottom frame
Fig. 67 --- Remove the screws
S Follow the arrows to disengage the claspson the front case
to remove it.
S Follow the procedure below when removing the slit
portions.
For Moldings
S Remove the pillars. Remove the slit portionson thebottom
frame using nippers.
2)Upper casing
Casing
Remove the pillar
Fig. 70 --- Remove the pillar
2. Installation
S Secure using 6 screws for floor installations. Do not
forget to secure to the rear wall.
S For wall installations, secure the mounting plate using 5
screws and the indoor unit using 4 screws.
3)Side
casings
Remove screws
Remove the pillar
Fig. 68 --- Remove the screws
3)Side
casings
34
The mounting plate should be installed on a wall which can
support the weight of the indoor unit.
(1.) Temporarily secure the mounting plate to the wall,
make sure that the panel is completely level, and
mark the boring points on the wall.
(2.) Secure the mounting plate to the wall with screws.
Casing
6screws
Fig. 71 --- Floor Installation
OUTDOOR UNIT INSTALLATION
1. Use a rigid base to support unit in a level position.
2. Locate outdoor unit and connect piping and wiring.
!
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Excessive torque can break flare nut depending on
installation conditions.
NOTE: Insta ll the outdoor unit on a ri gid ba se t o reduc e noise levels
and vibration. Determine the optimal air outlet direction to prevent
discharged air from being blocked. If the install ation site is exposed to
strong winds such as a coast al areas, ensure the fan’s proper operation
by installing the unit lengthwise along the wall or use dust or shield
plates. If the unit needs to be suspended, the instal lation bracke t should
comply with the suspension requirements in the installation bracket
diagram. The installation wal l should be solid brick, conc rete or the
same intensity construction, or take steps to r einforce and dampen the
support. The connecti on between the bracket and the wal l as wel l as
the bracket and the ai r conditioner s houl d be fi rm, s table and rel iable.
Ensure there is no obstacle which may block the radiating air.
CAUTION
Strong
wind
7.7in (195mm)
Molding
6screws
-
Fig. 72 --- Wall Installation
(3.) Once refrigerant piping and drain piping
connections are complete, fill in the gap of the
through hole with putty. A gap can lead to
condensation on the refrigerant pipe, and drain
pipe, and the entry of insects into the pipes.
(4.) Attach the front panel and front grille in their original
positions once all connections are complete.
A07350
Fig. 73 --- High Wind Installation
Piping Connections to Outdoor
IMPORTANT: Use refrigeration grade tubing only. No other
tubing type may be used. Use of other tubing types will void the
manufacturer’s warranty. Ensure there is enough piping to cover
the required length between the outdoor and indoor unit. Only use
piping suitable for high side pressure for both high and low side
connections.
Unit
35
36
Piping Guide:
S Do not open service valves or remove protective caps from
tubing ends until all the connections are made.
S Bend tubing with bending tools to avoid kinks and flat spots.
S Keep the tubing free of dirt, sand, moisture, and other
contaminants to avoid damaging the refrigerant system.
S Avoid sags in the suction line to prevent the formation of oil traps.
Insulate each tube with minimum 3/8--in. (10 mm) wall thermal
pipe insul ation. Inserting the tubing into the insulation before
making the connections saves time and improves installation quality.
1. The unit is equipped with multiple pairs of service valves.
Each pair is clearly marked (color and letter) to identify the
indoor unit circuits. In the outdoor unit wiring are a, each
indoor unit inter connecting termi nal block is marked (letter)
the same as the correspondi ng pair of service valves. The
indoor units must be piped and wired in ma tched sets (A to A;
BtoB,etc.).
2. It is not required to use all of the available fan coil
connections if the application does not require them at the
current time. The system can be expanded at any time.
3. Conversion joints are supplied with the outdoor unit. They
are required for certain fan coil combinations. These joints
are to be connected to the outdoor unit as needed to match
the line set size.
4. Cut tubing with tubing cutter.
5. Install correct size flare nut onto tubing and make flare
connection.
6. Apply a small amount of refrigerant oil to the flare
connection on the tubing.
7. Properly align tubing in with service valve (conversion
joint).
8. Tighten flare nut and finish installation using two wrenches
as shown in Fig. 74.
A07354
Fig. 74 --- Tighten Flare Nut
Table 24— Tightening Torque
Pipe Diameter
Inch (mm)
Tightening Torque
Ft--lb N -m
Ø1/4” (6.35) 10 to 13 13.6 to 17.6
Ø3/8” (9.52) 23 to 31 32.5 to 42.0
Ø1/2” (12.7) 37 to 46 50.1 to 62.3
Ø5/8” (15.88) 60 to 60 67.7 to 81.3
INSTALL ALL POWER AND INTERCONNECTING
WIRING TO OUTDOOR UNIT
1. Mount outdoor power disconnect.
2. Run power wiring from main box to disconnect per NEC
and local codes.
3. Remove field wiring cover (if available) from unit by
loosening screws.
4. Remove knockouts.
5. Connect the conduit to the conduit panel.
6. Properly connect both power supply and control lines to
terminal block per the connection diagram.
7. Ground unit in accordance with NEC and local electrical
codes.
8. Use lock nuts to secure conduit.
9. Reinstall field wiring cover.
INSTALL ALL POWER, INTERCONNECTING
WIRING, AND PIPING TO INDOOR UNIT.
1. Run interconnecting piping and wiring from outdoor unit to
each indoor unit (in matched pairs).
2. Pass interconnecting cable through hole in wall (outside to
inside).
3. Lift indoor unit into position and route piping and drain
through hole in wall (inside to outside). Fit the
interconnecting wiring into back side of indoor unit.
4. Open front cover of indoor unit and remove field wiring
terminal block cover (see Fig. 75).
Field Wiring
Cover
Interconnecting
Cable
A08279
Fig. 75 --- Field Wiring Cover
5. Pull interconnecting wire up from back of indoor unit and
position in close to the terminal block on indoor unit.
6. Push bottom of indoor unit onto mounting plate to
complete wall mount.
7. Connect wiring from the outdoor unit per the connection
diagram.
NOTE: Polarity of power wires must match original
connection on outdoor unit.
8. Replace field wiring cover and close front cover of indoor
unit.
9. Connect refrigerant piping and drain line outside of indoor
unit. Refer to Piping Connections to Outdoor Unit section
for proper installation of flare connections. Complete pipe
insulation at flare connection then fasten piping and wiring
to the wall as required. Completely seal the hole in the wall.
10. Repeat steps 1 through 10 for each indoor unit.
SYSTEM VACUUM AND CHARGE
t
!
CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Never use the system compressor as a vacuum pump.
Refrigerant tubes and indoor coil should be evacuated using the
recommended deep vacuum method of 500 microns. The alternate
triple evacuation method may be used if the procedure outlined
below is followed. Always break a vacuum with dry nitrogen.
NOTE: All units have a Master Suction and Liquid Line Service
Valve (excluding the 18,000 BTU unit).
1. Completely tighten the flare nuts A, B, C, D, E. Fully open
all circuits service valves, connect the manifold gage charge
hose to the charge port of the low side Master service valve
to evacuate all circuits at the same time (see Fig. 76).
2. Connect the charge hose to the vacuum pump.
3. Open (fully) the low side of the manifold gage (see Fig. 77).
4. Start the vacuum pump.
5. Evacuate using either deep vacuum or triple evacuation
method.
6. After the evacuation is complete, fully close the low side of
manifold gage and stop operation of vacuum pump.
7. The factory charge contained in the outdoor unit is good for
up to 25 ft. (8 m) of line length. For refrigerant lines longer
than 25 ft. (8 m), add refrigerant, up to the allowable length,
as specified in the System Requirements section.
8. Disconnect the charge hose from charge connection of the
low side service valve.
9. Securely tighten caps of service valves.
Outdoor Unit
Service Valve
Refrigerant
Low Side
A
High Side
B
Fig. 76 --- Service Valve
Indoor Uni
C
D
A07360
Deep Vacuum
Method
The deep vacuum method requires a vacuum pump capable of
pulling a vacuum of 500 microns and a vacuum gage capable of
accurately measuring this vacuum depth. The deep vacuum method
is the most positive way of assuring a system is free of air and
liquid water (see Fig. 78).
5000
4500
4000
3500
3000
2500
2000
MICRONS
1500
1000
500
01234567
MINUTES
LEAK IN
SYSTEM
VACUUM TIGHT
TOO WET
TIGHT
DRY SYSTEM
A95424
Fig. 78 --- Deep Vacuum Graph
Triple Evacuation
Method
The triple evacuation method should only be used when vacuum
pump is only capable of pumping down to 28 in. of mercury
vacuum and system does not contain any liquid water.
Refer to Fig. 79 and proceed as follows:
1. Pump system down to 28 in. of mercury and allow the
pump to continue operating for an additional 15 minutes.
2. Close service valves and shut off vacuum pump.
3. Connect a nitrogen cylinder and regulator to system and
open until system pressure is 2 psig.
4. Close service valve and allow system to stand for 1 hr.
During this time, dry nitrogen will be able to diffuse
throughout the system absorbing moisture.
5. Repeat this procedure as indicated in Fig. 79. System will
then be free of any contaminants and water vapor.
EVACUATE
BREAK VACUUM WITH DRY NITROGEN
WAIT
500 microns
Low side valve
Charge hose
Low side valve
Manifold Gage
High side valve
Charge hose
Fig. 77 --- Man ifold
Vacuum pump
A07361
EVACUATE
BREAK VACUUM WITH DRY NITROGEN
WAIT
EVACUATE
CHECK FOR TIGHT, DRY SYSTEM
(IF IT HOLDS DEEP VACUUM)
RELEASE CHARGE INTO SYSTEM
A95425
Fig. 79 --- Triple Evacuation Method
Final Tubing
Check
IMPORTANT: Check to be certain the factory tubing on both
indoor and outdoor unit has not shifted during shipment.
Ensure tubes are not rubbing against each other or any sheet
metal. Pay close attention to feeder tubes, making sure wire ties
on feeder tubes ar e secure and tight.
37
START--UP
Tes t Operation
Perform test operation after completing gas leak and electrical
safety check.
1. Push the “ON/OFF” button on Remote Control to begin
testing.
NOTE: A protection feature prevents the air conditioner from
being activated for approximately 3 minutes.
2. Push MODE button, select COOLING, HEATING, FAN
mode to check if all functions work correctly.
SYSTEM CHECKS
1. Conceal the tubing where possible.
2. Ensure the drain tube slopes downward along its entire
length.
3. Ensure all tubing and connections are properly insulated.
4. Fasten tubes to the outside wall, when possible.
5. Seal the hole through which the cables and tubing pass.
INDOOR UNIT
1. Do all Remote Control buttons function properly?
2. Do the display panel lights work properly?
3. Does the air deflection louver function properly?
4. Does the drain work?
OUTDOOR UNIT
1. Are there unusual noises or vibrations during operation?
Explain The Following Items To Customer With The Aid Of
The Owner’s Manual:
1. How to turn air conditioner on and off; selecting
COOLING, HEATING and other operating modes; setting
a desired temperature; setting the timer to automatically start
and stop air conditioner operation; and all other features of
the Remote Control and display panel.
2. How to remove and clean the air filter.
3. How to set air deflection louver.
4. Explain care and maintenance.
5. Present the Owner’s Manual and installation instructions to
customer.
38
CONNECTION DIAGRAMS
Fig. 80 --- Connection Diagram Size 18
Fig. 81 --- Connection Diagram Size 27
39
CONNECTION DIAGRAMS (CONT)
Fig. 82 --- Connection Diagram Size 36
Fig. 83 --- Connection Diagram Size 48
Notes:
1. Do not use thermostat wire for any connection between indoor and outdoor units.
2. All connections between indoor and outdoor units must be as shown. The connections are sensitive to polarity and will result in a fault code.
40
Table 25—Indoor Unit Error Display
OPERATION
LAMP
☆1time
TIMER LAMP DISPLAY LED STATUS
X E0 Indoor unit EEPROM error
☆ 2times X E1 Communication malfunction between indoor and outdoor units.
☆4times X E3 Indoor fan speed has been out of control
☆5times X E4 Indoor room temperature sensor T1 open circuit or short circuit
☆6times X E5 Evaporator coil temperature sensor T2 open circuit or short circuit
☆7times X EC Refrigerant leakage detection
☆8times X EE Water ---level alarm malfunction
☆1time O F0 Current overload protection
☆2times O F1 Open circuit or short circuit of outdoor ambient temperature sensor T4
☆3times O F2 Open circuit or short circuit of condenser coil temperature sensor T3
☆4times O F3 Open circuit or short circuit of Compressor discharge temperature sensor T5
☆5times O F4 Outdoor unit EEPROM error
☆6times O F5 Outdoor fan speed has been out of control
☆7times O F6 T2B sensor error
☆8times O F7 Lifting---panel communication error
☆9times O F8 Lifting---panel malfunction
☆10 times O F9 Lifting --- panel is not closed
☆1time ☆ P0 IPM malfunction
☆2times ☆ P1 Over voltage or over low voltage protection
☆3times ☆ P2 High temperature protection of compressor top
☆4times ☆ P3 Outdoor low temperature protection
☆5times ☆ P4 Inverter compressor drive error
☆6times ☆ P5 Mode conflict
☆7times ☆ P6 Compressor low ---pressure protection
☆8times ☆ P7 Outdoor IGBT temperature sensor error
O (light) X (off) ☆ (flash)
OUTDOOR UNIT DIAGNOSTIC GUIDES
This unit has on --board diagnostics. Error codes are displayed on the wired remote controller and the outdoor unit microprocessor board with
colored LED lights. The table below explains the error codes on both.
Table 26—Outdoor Unit Error Display
DISPLAY LED STATUS IDU Error IDU Error
E0 Outdoor EEPROM malfunction F4 E6
E2 Communication malfunction between indoor and outdoor units E1 E2
E3 Communication malfunction between IPM board and outdoor main board —— ——
E4 Open or short circuit of outdoor temperature sensor (T3、T4、T5、T2B) F2 E6
E5 Voltage protection P1 P0
E6 PFC module protection —— ——
E8 Outdoor fan speed has been out of control (Only for DC fan motor models) F5 ——
E9 Wrong wiring connection of 24K indoor unit —— ——
F1 No A Indoor unit coil outlet temp. sensor or connector of sensor is defective —— ——
F2 No B Indoor unit coil outlet temp. sensor or connector of sensor is defective —— ——
F3 No C Indoor unit coil outlet temp. sensor or connector of sensor is defective —— ——
F4 No D Indoor unit coil outlet temp. sensor or connector of sensor is defective —— ——
F5 No E Indoor unit coil outlet temp. sensor or connector of sensor is defective —— ——
F6 No F Indoor unit coil outlet temp. sensor or connector of sensor is defective —— ——
P0 Temperature protection of compressor top P2 P3(P1)
P1 High pressure protection —— ——
P2 Low pressure protection —— ——
P3 Current protection of compressor —— ——(P2)
P4 Temperature protection of compressor discharge —— ——
P5 High temperature protection of condenser —— ——
P6 IPM module protection P0 E5
41
Copyright 2015 Carrier Corporation. S 7310 W. Morris St. S Indianapolis, IN 46231
Manufacturer reser ves the right to change, at any time, specifications and designs without notice and without obligations.
Edition Date: 10/15
42
Catalog No: 38MGQ---02SI
R e p l a c e s : 3 8 M G --- 4 0 M A --- M B --- 0 1 S I
Loading...