Panasonic | CS-KS18NB4UW | Installation instructions | Panasonic CS-KS18NB4UW Installation Instructions

APPENDIX B INSTALLATION INSTRUCTIONS
CS-KS12NB41 & CZ-18BT1U + CU-KS12NK1A
CS-KS18NB4UW & CZ-18BT1U + CU-KS18NKU
CS-KS18NB4UW & CZ-18BT1U + CU-KS18NKUA
(852-6-4190-574-00-1)
A-2
INSTALLATION INSTRUCTIONS
Split System Air Conditioner
This air conditioner uses the refrigerant R410A.
NOTE
Contents
Page
External diameter of service port R410A: 5/16"
Model Combinations
IMPORTANT!
Please Read Before Starting .................................. 2
1.
GENERAL .......................................................... 4
1-1. Tools Required for Installation (not supplied)
1-2. Accessories Supplied with Unit
1-3. Optional Copper Tubing Kit
1-4. Type of Copper Tube and Insulation Material
1-5. Additional Materials Required for Installation
2.
INSTALLATION SITE SELECTION ................... 5
2-1. Indoor Unit
2-2. Outdoor Unit
2-3. Baffle Plate for the Outdoor Unit
3.
HOW TO INSTALL THE INDOOR UNIT ........... 12
3-1. Preparation for Suspending
3-2. Suspending the Indoor Unit
3-3. Placing the Unit Inside the Ceiling
3-4. Installing the Drain Piping
3-5. Checking the Drainage
3-6. How to Install the Ceiling Panel
3-7. Wiring Instructions
3-8. Recommended Wire Length and Diameter
3-9. Wiring Instructions for Inter-unit Connections
4.
HOW TO INSTALL THE OUTDOOR UNIT ....... 20
4-1. Wiring Instructions for the Outdoor Unit
5.
REFRIGERANT TUBING .................................. 21
5-1. Use of the Flaring Method
5-2. Flaring Procedure with a Flare Tool
5-3. Caution before Connecting Tubes Tightly
5-4. Connecting Tubing between Indoor and
Outdoor Units
5-5. Insulation of Refrigerant Tubing
5-6. Taping the Tubes
5-7. Finishing the Installation
6.
AIR PURGING................................................... 23
Air Purging with a Vacuum Pump (for Test Run)
Basic Functions of the Service Valves
Pump Down
Service Valve Connections
7.
REMOTE CONTROLLER INSTALLATION
POSITION ......................................................... 27
7-1. Mounting on a Wall
8.
ADDRESS SWITCH .......................................... 28
8-1. Address Setting of the Remote Controller
Combine indoor and outdoor units only as listed
below.
Model No.
Indoor Unit
Outdoor Unit
CS-KS12NB41
Power Source:
60 Hz, single-phase, 115 V
CU-KS12NK1A
CS-KS18NB4UW
CU-KS18NKU
CU-KS18NKUA
Power Source:
60 Hz, single-phase, 230/208 V
Ceiling Panel
CZ-18BT1U
85264190574001 2011
CV6233187785
IMPORTANT!
Please Read Before Starting
When Transporting
Be careful when picking up and moving the indoor and outdoor units. Get a partner to help, and bend your knees when
lifting to reduce strain on your back. Sharp edges or thin aluminum fins on the air conditioner can cut your fingers.
This air conditioning system meets strict safety and operating
standards. As the installer or service person, it is an important
part of your job to install or service the system so it operates
safely and efficiently.
When Installing…
Select an installation location which is rigid and strong
enough to support or hold the unit, and select a location for
easy maintenance.
For safe installation and trouble-free operation, you
must:
Carefully read this instruction booklet before beginning.
Follow each installation or repair step exactly as shown.
Observe all local, state, and national electrical codes.
Pay close attention to all warning and caution notices
given in this manual.
This symbol refers to a hazard
or unsafe practice which can
WARNING
result in severe personal injury
or death.
This symbol refers to a hazard
or unsafe practice which can
CAUTION
result in personal injury or product or property damage.
…In a Ceiling or Wall
Make sure the ceiling/wall is strong enough to hold the
unit’s weight. It may be necessary to construct a strong
wood or metal frame to provide added support.
…In a Room
Properly insulate any tubing run inside a room to prevent
“sweating” that can cause dripping and water damage to
walls and floors.
Keep the fire alarm and the air
outlet at least 1.5 m away from
CAUTION
the unit.
If Necessary, Get Help
These instructions are all you need for most installation
sites and maintenance conditions. If you require help for a
special problem, contact our sales/service outlet or your
certified dealer for additional instructions.
…In Moist or Uneven Locations
In Case of Improper Installation
…In an Area with High Winds
Use a raised concrete pad or concrete blocks to provide a
solid, level foundation for the outdoor unit. This prevents
water damage and abnormal vibration.
Securely anchor the outdoor unit down with bolts and a
metal frame. Provide a suitable air baffle.
The manufacturer shall in no way be responsible for improper installation or maintenance service, including failure to
follow the instructions in this document.
…In a Snowy Area (for Heat Pump-type Systems)
Install the outdoor unit on a raised platform that is higher
than drifting snow. Provide snow vents.
SPECIAL PRECAUTIONS
WARNING
‡
‡
‡
‡
‡
When Connecting Refrigerant Tubing
When Wiring
ELECTRICAL SHOCK CAN CAUSE SEVERE
PERSONAL INJURY OR DEATH. ONLY A
QUALIFIED, EXPERIENCED ELECTRICIAN
SHOULD ATTEMPT TO WIRE THIS SYSTEM.
'RQRWVXSSO\SRZHUWRWKHXQLWXQWLODOOZLULQJDQGWXELQJ
are completed or reconnected and checked.
+LJKO\GDQJHURXVHOHFWULFDOYROWDJHVDUHXVHGLQWKLV
system. Carefully refer to the wiring diagram and these
instructions when wiring. Improper connections and
inadequate grounding can cause accidental injury or
death.
*URXQGWKHXQLW following local electrical codes.
&RQQHFWDOOZLULQJWLJKWO\/RRVHZLULQJPD\FDXVHRYHU
heating at connection points and a possible fire hazard.
7RSUHYHQWSRVVLEOHKD]DUGVIURPLQVXODWLRQIDLOXUH
the unit must be grounded.
WARNING
‡ :KHQSHUIRUPLQJpiping work
do not mix air except for specified refrigerant (R410A) in
refrigeration cycle. It causes
capacity down, and risk of
explosion and injury due to
high tension inside the refrigerant cycle.
‡ 5HIULJHUDQWJDVOHDNDJHPD\
cause fire.
‡ 'RQRWDGGRUUHSODFHUHIULJHUDQW
other than specified type.
It may cause product damage,
burst and injury etc.
‡ 9HQWLODWHWKHURRPZHOOLQWKHHYHQWWKDWUHIULJHUDQW
gas leaks during the installation. Be careful not to allow
contact of the refrigerant gas with a flame as this will
cause the generation of poisonous gas.
2
Others
‡ 8VHWKHIODUHPHWKRGIRUFRQQHFWLQJWXELQJ
‡ $SSO\UHIULJHUDQWOXEULFDQWWRWKHPDWFKLQJVXUIDFHVRI
the flare and union tubes before connecting them,
then tighten the nut with a torque wrench for a leakfree connection.
CAUTION
‡ &KHFNFDUHIXOO\IRUOHDNVEHIRUHVWDUWLQJWKHWHVWUXQ
‡ 9HQWLODWHDQ\HQFORVHGDUHDVZKHQLQVWDOOLQJRUWHVWLQJ
the refrigeration system. Escaped refrigerant gas, on
contact with fire or heat, can produce dangerously
toxic gas.
‡ 'RQRWOHDNUHIULJHUDQWZKLOHSLSLQJZRUNIRUDQLQVWDOODWLRQ
or re-installation, and while repairing refrigeration parts.
Handle liquid refrigerant carefully as it may cause frostbite.
‡ &RQILUPXSRQFRPSOHWLQJLQVWDOODWLRQWKDWQRUHIULJHUDQW
gas is leaking. If escaped gas comes in contact with a
stove, gas water heater, electric room heater or other heat
source, it can produce dangerously toxic gas.
When Servicing
‡ 7XUQWKHSRZHU2)) DWWKHPDLQSRZHUER[PDLQV
before opening the unit to check or repair electrical
parts and wiring.
‡ 'RQRWWRXFKWKHDLULQOHWRUWKHVKDUSDOXPLQXP
fins of the outdoor unit. You may get injured.
‡ .HHS\RXUILQJHUVDQGFORWKLQJDZD\IURPDQ\PRYLQJ
parts.
‡ 'RQRWVLWRUVWHSRQWKHXQLW\RXPD\IDOOGRZQ
accidentally.
‡ &OHDQXSWKHVLWHDIWHU\RXILQLVKUHPHPEHULQJWRFKHFN
that no metal scraps or bits of wiring have been left inside
the unit being serviced.
‡ 'RQRWVWLFNDQ\REMHFWLQWRWKH)$1&$6(
You may be injured and the unit may be damaged.
NOTE
The illustrations are based on the typical appearance of
a standard model. Consequently, the shape may differ
from that of the air conditioner that you are installing.
3
1. General
This booklet briefly outlines where and how to install the air conditioning system. Please read over the entire set of instructions for the indoor and outdoor units and make sure all accessory parts listed are with the system before beginning.
1-1. Tools Required for Installation (not supplied)
1. Standard screwdriver
6. Sabre saw or key hole saw
2. Phillips head screwdriver
7. Hacksaw
3. Knife or wire stripper
8. Core bits
4. Tape measure
9. Hammer
5. Carpenter’s level
10. Drill
11.
12.
13.
14.
15.
Tube cutter
Tube flaring tool
Torque wrench
Adjustable wrench
Reamer (for deburring)
1-2. Accessories Supplied with Unit
Table 1
Parts
Figure
Q’ty
Washer
Flare
insulation
Insulation tape
8
1/8"(T3)
3/16"(T5)
Vinyl tie
Drain hose
insulation
13/32"(T10)
Parts
Figure
Drain hose
2
For wide /
narrow tube /
flare nut connection
Hose band
8
For flare / drain
insulating
connection
Tapping screw
1
For drain tube
connection
Cushion rubber
Remote
controller
1
Remote control
holder
1
AAA alkaline
battery
2
Full-scale
installation
diagram
1
3/16 13/32"
(5 10mm)
Truss head screw
For wide /
narrow tube
connection
2
set
3/32"(T2)
Remarks
For temporarily
suspending indoor
unit from ceiling
Q’ty
4
1
For unit & PVC
tube connection
2
For drain hose
connection
5-1/2"(L140)
Truss-head Phillips
5/32 5/8"
(4 16mm)
Truss head screw
Special screw
2
4
5/32 15/32"
(4 12mm)
Remarks
For full-scale
installation
diagram
Packed in the
outdoor unit
4
4
Packed in the
ceiling panel
3/16 1-9/16"
(5 40mm)
Use M10 or 3/8" for suspension bolts.
Suspension bolts and nuts (locally purchased)
Printed on
container box
1-3. Optional Copper Tubing Kit
Copper tubing for connecting the outdoor unit to the indoor unit is available in kits which contain the narrow and wide
tubing, fittings and insulation. Consult your nearest sales outlet or air conditioning workshop.
1-4. Type of Copper Tube and Insulation Material
If you wish to purchase these materials separately from a local source, you will need:
1.
Deoxidized annealed copper tube for refrigerant tubing as detailed in Table 2.
Cut each tube to the appropriate lengths 1' to 1'4" (30 cm to 40 cm) to dampen vibration between units.
2.
Foamed polyethylene insulation for the specified copper tubes as required to precise length of tubing. Wall thickness
of the insulation should be not less than 5/16" (8 mm).
3.
Use insulated copper wire for field wiring. Wire size varies with the total length of wiring. Refer to 3-7. Wiring
Instructions for details.
CAUTION
Table 2
Narrow Tube
Model
Wide Tube
Outer Dia.
Thickness
Outer Dia.
Thickness
CS-KS12NB41
1/4" (6.35 mm)
0.0314" (0.8 mm)
3/8" (9.52 mm)
0.0314" (0.8 mm)
CS-KS18NB4UW
1/4" (6.35 mm)
0.0314" (0.8 mm)
1/2" (12.70 mm)
0.0314" (0.8 mm)
4
Check local electrical codes
and regulations before
obtaining wire. Also, check
any specified instructions or
limitations.
1-5. Additional Materials Required for Installation
1.
2.
Refrigeration (armored) tape
Insulated staples or clamps for connecting wire
(See local codes)
Putty
Refrigeration lubricant
Clamps or saddles to secure refrigerant tubing
3.
4.
5.
2. Installation Site Selection
2-1. Indoor Unit
WARNING
To prevent abnormal heat generation and the possibility of fire, do
not place obstacles, enclosures
and grilles in front of or surrounding the air conditioner in a way
that may block air flow.
AVOID:
3.3 ft.
(1m)
3.3 ft.
(1m)
direct sunlight.
nearby heat sources that may affect performance of the unit.
areas where leakage of flammable gas may be expected.
places where large amounts of oil mist exist.
3.3 ft.
(1m)
3.3 ft.
(1m)
3.3 ft.
(1m)
DO:
Fig. 1
select an appropriate position from which every corner of
the room can be uniformly cooled.
select a location that will hold the weight of the unit.
select a location where tubing and drain hose have the
shortest run to the outside.
allow room for operation and maintenance as well as unrestricted air flow around the unit. (Fig. 1)
Outdoor unit
install the unit within the maximum elevation difference (H)
above or below the outdoor unit and within a total tubing length
(L) from the outdoor unit as detailed in Table 3 and Fig. 2.
install the indoor unit more than 3.3' (1 m) away from any
antenna or power lines or connecting wires used for television,
radio, telephone, security system, or intercom. Electrical noise
from any of these sources may affect operation.
Elevation difference (H)
Indoor unit
Tubing length (L)
Fig. 2
CAUTION
Air delivery will be degraded if the distance
from the floor to the ceiling is greater than
10 ft. (3 m).
Table 3
Model
Max. Allowable Tubing
Length at Shipment
(ft.)
Limit of Tubing
Length (L)
(ft.)
Limit of Elevation
Difference (H)
(ft.)
Required Amount of
Additional Refrigerant
(oz./ft.)*
CS-KS12NB41
25
65
23
0.16
CS-KS18NB4UW
25
100
50
0.27
* If total tubing length becomes 25 to 65 ft. (Max.) or 25 to 100 ft. (Max.), charge additional refrigerant (R410A) by 0.16 or 0.27 oz./ft.
No additional charge of compressor oil is necessary. For more detailed charging information, refer to the Technical & Service Manual.
5
2-2. Outdoor Unit
NO
AVOID:
Hot air
heat sources, exhaust fans, etc. (Fig. 3)
damp, humid or uneven locations.
Heat source
Outdoor unit
DO:
install in a location where at least two sides are unobstructed, so that the flow of air at the intake port or
exhaust port is not blocked, and so that sufficient
space is ensured for maintenance to be carried out
without trouble. In general the top also must be unobstructed. (Figs. 4a and 4b)
Fig. 3
(CU-KS12NK1A)
Air intake
provide a solid base (level concrete pad, concrete
block, 4" 1'4" (10 40 cm) beams or equal), a minimum of 4" (10 cm) above ground level to reduce
humidity and protect the unit against possible water
damage and decreased service life. (Fig. 5a)
Min.
2" (5 cm)
Min. 2" (5 cm)
Air discharge
use lug bolts or equal to bolt down unit, reducing
vibration and noise.
install in a location where no antenna of a television
or radio exists within 10' (3 m).
Valve
side
Min. 10"
(25 cm)
Min.
Min.
7' (2 m) 7' (2 m)
Min.
8" (20 cm)
install cushion rubber under unit’s feet to reduce
vibration and noise. (Fig. 5b)
Obstacle above
Obstacle
choose a place that is well ventilated.
Ground
Fig. 4a
(CU-KS18NKU, CU-KS18NKUA)
Air intake
Min.
2" (5 cm)
Min. 4" (10 cm)
Air discharge
Valve
side
Min. 10"
(25 cm)
Air intake
Obstacle above
Min.
Min.
7' (2 m) 7' (2 m)
Min.
1'4" (40 cm)
Ground
Fig. 4b
Anchor bolts
(4 pcs.)
Min. 2" (5 cm)
Obstacle
Air discharge
choose a place as cool as possible.
Air discharge
Exhaust fan
Min. 4" (10 cm)
Air intake
Min. 4" (10 cm)
Air intake
Concrete
or equal
Ab
ou
t1
" (10
'4"
t4
Abou
(40
cm)
Cushion rubber
cm
)
Fig. 5a
Fig. 5b
6
2-3. Baffle Plate for the Outdoor Unit
(Low Ambient Cooling models only)
Air intake baffle
Wind
NOTE
It is recommended to use baffle plates for models
CU-KS12NK1A and CU-KS18NKUA. The baffle plates
are not normally required for the other models.
Front
When the outdoor unit is installed in a position exposed
to strong wind (such as seasonal winds with low air temperature in winter), baffle plates must be installed on the
outdoor unit. (Fig. 5c)
Back
This unit is designed so that the fan of the outdoor unit
runs at low speed when the air conditioner is operated at
low outdoor air temperatures. When the outdoor unit is
exposed to strong wind, the system pressure drops
because of the freeze protector.
No air intake baffle
required on
this side.
Install a pair of windbaffle plates at the front and back of
the outdoor unit if it will be subject to strong wind during
the winter. (Figs. 5c to 5k)
Wind
Air discharge baffle
Fig. 5c
7
CU-KS12NK1A
(1) Recommended dimensions of the baffle plates
Air Intake Baffle
Air Discharge Baffle
N
H
A
2(2-
15/64"
6 mm)
J
2(2-
I
J
B
H
C
K
M
1/4"
6.5 mm)
G
L
4(4-
1/4"
6.5 mm)
Q
K
P
C
G
I
E
A
G
E
D
F
D
B
F
Fig. 5d
Fig. 5e
For Air Intake
Dimensions
Model
CU-KS12NK1A
A
B
(inch) 21-21/32 25/32
(mm)
C
D
2-5/32 17-5/16
E
F
G
H
I
J
K
N
P
13
25/64
19/32
23/64
19/64
17-3/8
550
20
55
440
330
10
15
9
7.5
441
25/64 5-29/32 25/32
10
150
20
A
B
C
D
E
F
G
H
I
J
K
L
M
1-3/8
1-3/8
35
35
Q
25/32
20
For Air Discharge
Dimensions
Model
CU-KS12NK1A
(inch) 19-3/32 20-3/32 13-25/32 5-29/32 17-17/32 25/32
(mm)
485
510
350
150
445
20
2-5/32 14-9/16 2-3/4
55
370
3-11/32 19/32
70
85
15
Material to be used: Metal plate with corrosion protection treatment
Plate thickness:
0.0394 to 0.0472" (1.0 to 1.2 mm)
(2) Parts required (locally purchased except for screws)
Air Intake Baffle
Air Discharge Baffle
Item
Q’ty
Item
Remarks
Q’ty Remarks
Baffle plate
1
Bolt 15/64 13/32 – 19/32" (M6 10 – 15 mm)
4
2
Nut 15/64" (M6)
4
Nut 15/64" (M6)
2
Washer
4
Washer
2
Spring washer
4
Spring washer
2
Baffle plate
1
Screw 5/32 15/32" (4 12 mm) tapping
2
Bolt 15/64 19/32 – 25/32" (M6 15 – 20 mm)
Attached to outdoor unit
8
CU-KS18NKUA
(1) Recommended dimensions of the baffle plates
Air Intake Baffle
Air Discharge Baffle
H
O
A
2- 15/64"
(2- 6 mm)
I
J
B
H
C
J
3(3-
K
1/4"
6.5 mm)
4(4-
1/4"
6.5 mm)
G
C
R
L
E
Q
I
D
A
K
E
G
F
F
D
B
G
Fig. 5f
Fig. 5g
For Air Intake
Dimensions
E
F
G
H
I
J
K
(inch) 24-13/32 25/32 1-25/32 22-1/4
(mm)
Model
CU-KS18NKUA
A
B
C
D
9-1/4
9-1/4
25/64
25/32
19/32
23-1/8
19/64
620
20
45
565
235
235
10
20
15
587
7.5
A
B
C
D
E
F
G
H
I
J
K
L
O
Q
25/64 5-29/32 25/32
10
150
20
R
25/32
20
For Air Discharge
Dimensions
Model
CU-KS18NKUA
(inch)
(mm)
20-7/8 22-1/16 13-25/32 5-29/32 18-1/8
530
560
350
150
460
1-3/8
2-5/32 17-5/16 2-3/8
35
55
440
3-11/32 31/32
60
85
25
Material to be used: Metal plate with corrosion protection treatment
Plate thickness:
0.0394 to 0.0472" (1.0 to 1.2 mm)
(2) Parts required (locally purchased except for screws)
Air Intake Baffle
Air Discharge Baffle
Item
Q’ty
Item
Remarks
Q’ty Remarks
Baffle plate
1
Bolt 15/64 13/32 – 19/32" (M6 10 – 15 mm)
4
3
Nut 15/64" (M6)
4
Nut 15/64" (M6)
3
Washer
4
Washer
3
Spring washer
4
Spring washer
3
Baffle plate
1
Screw 5/32 15/32" (4 12 mm) tapping
2
Bolt 15/64 19/32 – 25/32" (M6 15 – 20 mm)
Attached to outdoor unit
9
(3) Installation procedure
CU-KS12NK1A
1. Air Intake Baffle
2. Air Discharge Baffle
(1) Left side
1. Remove the panels front, side L and R from the unit
and drill 4 holes of ø1/4 inch (6.5 mm) at the
prescribed positions.
1. Remove the front panel from the unit.
2. Remove the panel side L, and drill 2 holes of ø1/4 inch
(6.5 mm) at the prescribed position.
2. Install the windbaffle on the unit using field supply
bolts and nuts.
3. Install the windbaffle on the unit using field supply bolts
and nuts.
3. Recommended bolts to be used are 15/64" (M6 ISO
standard), and the recommended length of the bolts
is between 13/32 – 19/32 inch (10 – 15 mm).
4. Recommended bolts to be used are 15/64" (M6 ISO
standard), and the recommended length of the bolts is
between 19/32 – 25/32 inch (15 – 20 mm).
4. Use washers and spring washers to tightly fasten the
windbaffle to the unit.
5. Use washers and spring washers to tightly fasten the
windbaffle to the unit.
(2) Right side
1. Remove the front panel from the unit.
2. Use 2 preholes on the panel side R to install the baffle
plate.
3. Remove the panel side R from the unit by removing the
screws. These screws are used in step 4 below.
4. Put (sandwich) the windbaffle between the unit and the
panel side R, then install the windbaffle on the unit using
the above screws. Be careful not to damage the screw
holes.
Panel front
Panel side R
Panel side R
Panel front
Panel side L
Fig. 5h
Panel side L
Fig. 5i
NOTE
In order to prevent contact of the bolts and heat exchanger and other parts inside the unit, install the windbaffle using
bolts from inside the unit and fasten the bolts with nuts from outside the unit.
When the windbaffle is installed on the unit, the unit has higher wind resistance. In order to prevent the unit from
falling over, anchor the legs of the unit using anchor bolts (or similar method).
10
CU-KS18NKUA
1. Air Intake Baffle
2. Air Discharge Baffle
(1) Left side
1. Remove the panels front, top, side L and R from the
unit and drill 4 holes of ø1/4 inch (6.5 mm) at the
prescribed positions.
1. Remove the top panel from the unit.
2. Remove the panel side L, and drill 3 holes of ø1/4 inch
(6.5 mm) at the prescribed positions.
2. Install the windbaffle on the unit using field supply
bolts and nuts.
3. Install the windbaffle on the unit using field supply bolts
and nuts.
3. Recommended bolts to be used are 15/64" (M6 ISO
standard), and the recommended length of the bolts
is between 13/32 – 19/32 inch (10 – 15 mm).
4. Recommended bolts to be used are 15/64" (M6 ISO
standard), and the recommended length of the bolts is
between 19/32 – 25/32 inch (15 – 20 mm).
4. Use washers and spring washers to tightly fasten the
windbaffle to the unit.
5. Use washers and spring washers to tightly fasten the
windbaffle to the unit.
(2) Right side
1. Remove the top panel from the unit.
2. Use 2 preholes on the panel side R to install the baffle plate.
3. Remove the panel side R from the unit by removing the
screws. These screws are used in step 4 below.
4. Put (sandwich) the windbaffle between the unit and the
panel side R, then install the windbaffle on the unit using the
above screws. Be careful not to damage the screw holes.
Panel side R
Panel top
Panel top
Panel front
Panel side R
Panel front
Panel side L
Panel side L
Fig. 5j
Fig. 5k
NOTE
In order to prevent contact of the bolts and heat exchanger and other parts inside the unit, install the windbaffle using
bolts from inside the unit and fasten the bolts with nuts from outside the unit.
When the windbaffle is installed on the unit, the unit has higher wind resistance. In order to prevent the unit from
falling over, anchor the legs of the unit using anchor bolts (or similar method).
(4) Precautions for installation
1. Be sure not to damage painted surfaces.
2. Finish the edges of the windbaffle to avoid cuts or injury.
3. Drilling of holes must be carefully done so that no damage is caused to external or internal parts of the unit.
Particular care must be taken that drill chips do not drop into the unit.
11
3. How to Install the Indoor Unit
Hole-in-anchor
Hole-in-plug
Concrete
Insert
3-1. Preparation for Suspending
This unit uses a drain pump. Use a carpenter’s level to
check that the unit is level.
3-2. Suspending the Indoor Unit
Suspension bolt (M10 or 3/8")
(locally purchased)
(1) Fix the suspension bolts securely in the ceiling using
the method shown in the diagrams, by attaching
them to the ceiling support structure, or by any other
method that ensures that the unit will be securely
and safely suspended. (Fig. 6-1)
Fig. 6-1
23-5/8"(600mm)
Ceiling opening dimensions
21-1/32"(534mm)
Suspension bolt pitch
(2) Follow the diagram to make the holes in the ceiling.
(3) Determine the pitch of the suspension bolts using
the supplied full-scale installation diagram. The diagram shows the relationship between the positions
of the suspension fitting, unit, and panel. (Fig. 6-2)
3-3. Placing the Unit Inside the Ceiling
(4) Thread the 3 hexagonal nuts (locally purchased) and
2 supplied washers onto each of the 4 suspension
bolts as shown in the diagram. Use 1 nut and 1
washer for the upper side, and 2 nuts and 1 washer
for the lower side, so that the unit will not fall off the
suspension lugs. (Fig. 6-4)
Supplied screw
Refrigerant tubing joint
(narrow tube side)
1/4( 6.35mm) (flared)
Fig. 6-2
1/2" – 23/32" (13~18mm)
Over 19/32" (15mm)
(3) The length of suspension bolts must be appropriate
for a distance between the bottom of the bolt and the
bottom of the unit of more than 19/32" (15 mm) as
shown in the diagram. (Fig. 6-3)
(30mm)
8-15/32"
(215mm)
Power supply port
1-3/16"
4-19/32"
(117mm)
(2) When placing the unit inside the ceiling, determine
the pitch of the suspension bolts using the supplied
full-scale installation diagram. (Fig. 6-3)
Tubing and wiring must be laid inside the ceiling
when suspending the unit. If the ceiling is already
constructed, lay the tubing and wiring into position
for connection to the unit before placing the unit
inside the ceiling.
Drain tube
connection port
(outer dia 1-1/32"( 26mm))
6-5/16" 6-11/16"
(160mm) (170mm)
1-25/32"
(45mm)
1-25/32"
(45mm)
22-5/8"(575mm)
2-3/32"
(53mm)
11-5/32"(283mm)
(1) Be sure to remove the fan protection (4pcs) for
transportation before hanging up the indoor unit.
23-5/8"(600mm)
Ceiling opening dimensions
21-1/32"(534mm)
Suspension bolt pitch
Full-scale installation diagram
(printed on top of container box)
Fig. 6-3
(5) Adjust so that the distance between the unit and the
ceiling bottom is 1/2" (13 mm) to 23/32" (18 mm).
Tighten the nuts on the upper side and lower side of
the suspension lug. (Fig. 6-4)
Suspension bolt
Suspension lug
Nuts and washers
(used for upper and lower)
Notch
Double nut
1/2" – 23/32"
(13~18mm)
Fig. 6-4
12
3-4. Installing the Drain Piping
(1) Prepare standard hard PVC pipe (locally purchased O.D.
1-1/32" (26 mm)) for the drain and use the supplied hose
band to prevent water leaks. (Fig. 6-5)
Twist tie
(4 vinyl ties, supplied)
Drain port
Drain hose
insulation
(supplied)
Hard PVC pipe
Position to
(equivalent to
O.D. 1-1/32" (26mm)) fasten hose
bands
(locally purchased)
(2) To install the drain hose, first place 1 of the 2 hose bands
over the unit drain port and the other hose band over the
hard PVC pipe (not supplied). Then connect both ends of
the supplied drain hose. (Fig. 6-5)
(3) On the unit drain side, grasp the hose band with pliers
and insert the drain hose all the way to the base.
If other commercially available hose bands are used, the
drain hose may become pinched or wrinkled and there is
danger of water leakage. Therefore be sure to use the
supplied hose bands. When sliding the hose bands, be
careful to avoid scratching the drain hose.
Do not use adhesive when connecting the supplied drain
hose to the drain port (either on the main unit or the PVC
pipe).
Reasons: a) It may cause water to leak from the connection. Since the connection is slippery just
after the adhesive has been applied, the
pipe easily slips off.
b) The pipe cannot be removed when maintenance is needed.
Drain hose
(supplied)
3/16"
(5mm)
15/16"
(25mm)
3/16"
(5mm)
15/16"
(25mm)
5-1/2"(140mm)
Unit
Fig. 6-5
CAUTION
(4) Wrap the hose with the supplied drain hose insulation
and use the 4 twist ties so that the hose is insulated with
no gaps.
Do not bend the supplied drain hose 90° or more. The
hose may slip off.
Fig. 6-6
Make sure the drain pipe has a downward gradient (1/100 or
more) and that there are no water traps.
CAUTION
CAUTION
Attach so that the hose band
fastener is on the side of the
drain port.
Attach the hose bands so that
each is approximately 3/16"
(5 mm) to 15/16" (25 mm) from
the end of the supplied drain
hose.
Air bleeder prohibited
NOTE
Hose band
(2 bands, supplied)
In cases where it is necessary to raise the height of the
drain piping, the drain piping can be raised to a maximum
height of 2.78 ft. (850 mm) above the bottom surface of
the ceiling. Under no conditions attempt to raise it higher
than 2.78 ft. (850 mm) above the bottom surface of the
ceiling. Doing so will result in water leakage. (Fig. 6-7)
Do not use natural drainage.
Do not install the pipe with an upward gradient from the
connection port. This will cause the drain water to flow
backward and leak when the unit is not operating.
(Fig. 6-8)
Do not apply force to the piping on the unit side when
connecting the drain pipe. The pipe should not be
allowed to hang unsupported from its connection to the
unit. Fasten the pipe to a wall, frame, or other support as
close to the unit as possible. (Fig. 6-9)
Provide insulation for any pipes that are run indoors.
Do not install an air bleeder as
this may cause water to spray
from the drain pipe outlet.
(Fig. 6-6)
1 ft.(300mm) or less
2.78 ft.(850mm) or less
0 - 45
* Length of supplied drain hose = 5-1/2"(140mm)
Fig. 6-7
Uphill slope
Fig. 6-8
Support
bracket
Fig. 6-9
13
3-5. Checking the Drainage
After wiring and drain piping are completed, use the following procedure to check that the water will drain smoothly. For this, prepare a bucket and wiping cloth to catch and wipe up spilled water.
Water drain
Be sure to do the wiring between the units before installing the
ceiling panel. (Refer to 3-9. Wiring Instructions for Inter-unit
Connections)
(1) Turn on the power. (Here, “power” refers to the power supply
from the outdoor unit.)
(2) Slowly pour approx. 16 ounces (500 ml) of water into the drain
pan to check drainage. (Fig. 6-10a)
(3) Remove the 2 screws from the control box cover, then open
the cover. Be careful not to drop the cover at this time.
(4) Disconnect the FS 3P connector (red) on the control PCB and
operate the drain pump. (Fig. 6-10b) Check the water flow
through the transparent drain pipe and see if there is any
leakage.
(5) When the check of drainage is complete, reconnect the FS
3P connector and remount the control cover.
CAUTION
The drain pump will continue to
operate for a minimum of 6 minutes after the FS 3P connector is
reconnected.
Over 4"
(100mm)
Control box
Plastic container
Drain pan outlet
for water intake Water
(Approx. 16 ounces (500m ) )
Fig. 6-10a
Control box
FLAP
FS
IND
RC
Fig. 6-10b
A must be within the range of 1/2"(13mm) to 23/32"(18mm). (Fig. 6-11)
If not within this range, malfunction or other trouble may occur.
3-6. How to Install the Ceiling Panel
Indoor unit
Checking the unit position
(1) Check that the ceiling hole is 23-5/8" (600 mm) 23-5/8"
(600 mm) (Fig. 6-11)
(2) Confirm that the position of the indoor unit and the ceiling
as shown in the diagram. If the positions of the ceiling surface and unit do not match, air leakage, water leakage, flap
operation failure, or other problems may occur. (Fig. 6-11)
A
Ceiling opening
dimension
Ceiling side
Latch
Fig. 6-11
NO
Flap
CAUTION
Never place the panel face-down. Neither hang it vertically nor place it on top of a projecting object. Placing it face-down will damage the surface.
Do not touch the flap or apply force to it. (This may
cause flap malfunction.) (Fig. 6-12)
Fig. 6-12
Fig. 6-13
Ceiling panel
Air-intake grille
1
1
3-6-1. Before Installing the Ceiling Panel
(1) Remove the air-intake grille and air filter from the ceiling
panel.
a) Press on and slide the two latches of the air-intake grille
with your thumb in the direction shown by the arrow 1
to open the grille. (Figs. 6-13 and 6-14)
Air-intake grille hinge
Fig. 6-14
2
b) With the air-intake grille opened, remove the grille hinge
from the ceiling panel by sliding it in the direction shown
by the arrow 2 . (Fig. 6-15)
Fig. 6-15
14
(2) Removing the corner cover and
indicator cover
a) While lightly pressing the center of the corner cover, pull up
the tab for the screw hole.
Use the same procedure to
remove the indicator cover.
(Fig. 6-16)
1 Press
Corner cover
2 Pull up
Indicator cover
Fig. 6-16
3-6-2. Installing the Ceiling Panel
Temporary latches
(1) Hang the temporary latches on the inside of the ceiling panel to the receptacle on the unit to temporarily
attach the ceiling panel in place. (Fig. 6-17)
The ceiling panel must be installed in the correct
direction relative to the unit. Align the REF. PIPE and
DRAIN marks on the ceiling panel corner with the
correct positions on the unit.
Temporary
latch
Fig. 6-17
Refrigerant tubing joint
Drainage check
(2) Align the panel installation holes and the unit screw
holes. (Fig. 6-18)
(3) Tighten the supplied special screws at the 4 panel
installation locations so that the panel is attached
tightly to the unit.
Check that the wiring connectors are not caught
between the unit and the ceiling panel.
REF.PIPE mark
Ceiling panel
DRAIN mark
(4) Check that the panel is attached tightly to the ceiling.
(Fig. 6-19)
At this time, make sure that there are no gaps
between the unit and the ceiling panel, or between
the ceiling panel and the ceiling surface.
If there is a gap between the panel and the ceiling,
leave the ceiling panel attached and make fine
adjustments to the installation height of the unit to
eliminate the gap with the ceiling.
Special screws
Fig. 6-18
Ceiling surface
Ceiling panel
Fig. 6-19
If a gap remains between the ceiling
surface and the ceiling panel even
after the screws are tightened,
adjust the height of the unit again.
Air leakage
Air leakage from
ceiling surface
Staining
Do not allow
gaps
Indoor unit
CAUTION
If the screws are not sufficiently tightened,
trouble such as that shown in the figure
below may occur. Be sure to tighten
the screws securely.
Panel installation hole
(4 locations)
Adjust so that there are no gaps.
Condensation, water leakage
Fig. 6-20
15
The height of the unit can be adjusted from the ceiling
panel corner hole, with the ceiling panel attached, to
an extent that does not affect the unit levelness,
the drain hose, or other elements.
3-6-3. Wiring the Ceiling Panel and the Indicator
Drain pipe side
(1) Remove the 2 screws from the control box cover, then open
the cover. Be careful that the cover does not fall.
(2) Connect the 5P FLAP wiring connector from the ceiling
panel to the connector on the control PCB in the control box.
(Fig. 6-21)
Control box
Refrigerant tube side
(3) Connect the 7P IND and 4P RC wiring connector from the
indicator to the connectors on the control PCB in the control
box. (Fig. 6-21)
Indicator cover
As to how to attach the indicator cover, refer to Fig.6-23.
(4) Be sure to use the clamps to fasten the connector wires in
place. (Fig. 6-21)
Fig. 6-22
Indoor unit
Ceiling panel
7P IND and 4P RC
wiring connector
Indicator
5P FLAP wiring connector
5P
IND RC
Clamps
FLAP
(5) Tighten the 2 cover screws to
close the cover.
Check that the wiring
connectors are not caught
between the electrical
component box and the cover.
If the indicator connector is
not securely connected,
the remote controller
signal will not be
received.
If the connectors are not
connected, the auto flap will not
operate. Be sure
to connect them securely.
Power box
5P FLAP
wiring connector
Indicator
7P IND and 4P RC wiring connector
4P
7P
Control box
* Pass the wiring connectors through the clamps to fasten them in place,
as shown in the figure.
Fig. 6-21
3-6-4. How to Attach the Corner Cover and Air-Intake Grille
A. Attaching the corner cover
Pin
(1) Check that the safety strap from the corner cover is fastened to the ceiling panel pin, as shown in the figure.
(Fig. 6-23)
(2) Use the supplied screws to attach the corner cover to the
ceiling panel.
B. Attaching the air-intake grille
To install the air-intake grille, follow the steps for 3-6-1.
Before Installing the Ceiling Panel in the reverse order.
By rotating the air-intake grille, it is possible to attach the
grille onto the ceiling panel
Hole for ceiling
panel hook
from any of 4 directions.
(Fig. 6-25)
When attaching the air-intake
grille, be careful that the flap
and the indicator wiring do
not become caught.
Be sure to attach the safety
cord that prevents the air-intake
Hook that prevents
grille from dropping off to the
the grille from
ceiling panel unit as shown
dropping
in Fig. 6-24.
Fig. 6-24
16
Place the corner cover so that the 3 tabs
fit into the holes in the ceiling panel.
Then fasten it in place with the supplied screws.
Fig. 6-23
* The grille can be installed
with these hinges facing
in any of 4 directions.
Can be installed rotated 90
Fig. 6-25
3-6-5. Checking After Installation
Check that there are no gaps between the unit and the ceiling panel, or between the ceiling panel and the ceiling surface. Gaps may cause water leakage and condensation.
Check that the wiring is securely connected.
If it is not securely connected, the auto flap will not operate. In addition, water leakage and condensation may occur.
3-6-6. When Removing the Ceiling Panel for Servicing
When removing the ceiling panel for servicing, remove the air-intake grille and air filter, disconnect the flap and the indicator wiring connectors inside the control box, and then remove the 4 mounting screws.
3-6-7. Adjusting the Auto Flap
The air-direction flap on the ceiling panel outlet can be adjusted as follows.
Adjust the flap to the desired angle using the remote controller. The flap also has an automatic air-sweeping mechanism.
NOTE
Never attempt to move the flap by hand.
Proper air flow depends on the location of the air conditioner, the layout of the room and furniture, etc. If cooling or
heating seems inadequate, try changing the direction of the air flow.
3-7. Wiring Instructions
General precautions on wiring
(1) Before wiring, confirm the rated voltage of the unit as shown on its nameplate,
then carry out the wiring closely following the wiring diagram.
(2) Provide a power outlet to be used exclusively for each unit, with a power supply
disconnect and circuit breaker for overcurrent protection provided in the exclusive line.
(3) To prevent possible hazards due to insulation failure, the unit must be grounded.
(4) Each wiring connection must be done tightly and in accordance with the wiring
system diagram. Wrong wiring may cause the unit to misoperate or become
damaged.
(5) Do not allow wiring to touch the refrigerant tubing, compressor, or any moving
parts of the fan.
(6) Unauthorized changes in the internal wiring can be very dangerous. The manufacturer will accept no responsibility for any damage or misoperation that occurs
as a result of such unauthorized changes.
3-8. Recommended Wire Length and Diameter
Regulations on wiring diameter differ from locality to locality. For field wiring requirements, please refer to your local electrical codes. Carefully observe these regulations when carrying out the installation.
Table 4 lists recommended wire lengths and diameters for power supply systems.
NOTE
Refer to the wiring system diagram (Fig. 7a or Fig. 7b) for the meaning of (A), (B)
and (C) in Table 4.
Refer to your local codes or in the absence of local codes see the National Electric
Code: ANSI/NFPA70.
17
Table 4
Cross-Sectional
Area (AWG)
Model
(A)+(B)
(A) Power Supply Wiring Length (ft)
(B) Power Line Length (ft)
(C) Control
Line Length (ft)
Fuse or Circuit
Breaker Capacity
(#14)
(#12)
(#14)
CU-KS12NK1A
131 (Max.)
230 (Max.)
65 (Max.)
20A
CU-KS18NKU, CU-KS18NKUA
131 (Max.)
230 (Max.)
100 (Max.)
15A
# ... AWG (American Wire Gauge)
WIRING SYSTEM DIAGRAM
(CU-KS12NK1A)
INDOOR Disconnect
*
UNIT
switch
Be sure to comply with local codes on running the
wire from the indoor unit to the outdoor unit (size
of wire and wiring method, etc.).
Each wire must be firmly connected.
No wire should be allowed to touch refrigerant
tubing, the compressor, or any moving part.
Terminal
OUTDOOR
UNIT
Field supply
115V
1
(B)
Terminal
1
115V
2
2
115V
3
3
(C)
4
Grounding line
(B)
WARNING
L
6
N
Grounding
line
To avoid the risk of electric shock, each air
conditioner unit must be grounded.
For the installation of a grounding device,
please observe local electrical codes.
Grounding is necessary, especially for units
using inverter circuits, in order to release
charged electricity and electrical noise caused
by high tension.
Otherwise, electrical shock may occur.
Place a dedicated ground more than 7' (2 m)
away from other grounds and do not have it
shared with other electric appliances.
Fig. 7a
(CU-KS18NKU, CU-KS18NKUA)
INDOOR Disconnect
*
UNIT
switch
Terminal
Field supply
230/208V
1
OUTDOOR
UNIT
(B)
Terminal
1
230/208V
2
2
230/208V
3
3
(C)
4
Grounding line
(B)
L1
6
L2
Grounding
line
Fig. 7b
(A)
5
CAUTION
(A)
5
Power supply
Single phase 230/208V 60HZ
Power supply
Single phase 115V 60HZ
WARNING
Be sure to connect the power supply line to the
outdoor unit as shown in the wiring diagram. The
indoor unit draws its power from the outdoor unit.
Do not run wiring for antenna, signal, or power
lines of television, radio, stereo, telephone, security system, or intercom any closer than 3'3" (1 m)
from the power cable and wires between the
indoor and outdoor units. Electrical noise may
affect the operation.
*
NOTE
A disconnect switch may be required by
national or local codes.
CAUTION
Always comply with national and local code
requirements.
18
3-9. Wiring Instructions for Inter-unit Connections
(1) Remove the 1 screw from the terminal cover, then open the
cover. Be careful that the cover does not fall.
(2) Remove the 3 screws from the power box cover, then open
the cover. Be careful that the cover does not fall.
(4) Remove the transparent plastic cover from the 3P terminal
plate.
(5) While viewing the wiring diagram, connect the inter-unit and
power supply line to terminals 1, 2 and 3 on the 3P terminal
plate.
(6) Remount the transparent plastic cover onto the 3P terminal
plate.
1 2
3
(3) Use the screw to securely fasten the ground wire from the
outdoor unit in place.
Power wiring
(Locally purchased)
Clamping strap
Earth screw
(7) Be sure to use the clamping strap to fasten the wires in place.
Inter unit
(Conduit)
(8) Tighten the screws to remount the terminal and the power
box cover.
WARNING
Fig. 8
Loose wiring may cause the terminal to overheat or result in unit
malfunction. A fire hazard may
also exist. Therefore, be sure all
wiring is tightly connected.
When connecting each power wire to the corresponding terminal, follow the instructions “How to connect wiring to the terminal” and fasten
the wire securely tight with the fixing screw of the terminal plate.
How to connect wiring to the terminal
a) For Indoor Unit
STRIP
SIZE
(1) Cut the wire end with a cutting pliers, then strip the insulation to
expose the wire about 9/32" (7 mm). See the label (Fig. 9) near the
terminal plate.
9/32"
(7 mm) (ACTUAL
SIZE)
Fig. 9
(2) Using a screwdriver, loosen the terminal screw on the terminal
plate.
b) For Outdoor Unit
For solid core wiring (or F-cable)
(1) Cut the wire end with a cutting pliers, then strip the insulation to
expose the solid wire about 15/16" (25 mm). (Fig. 10)
(2) Using a screwdriver, remove the terminal screw(s) on the terminal
plate.
(3) Using the pliers, bend the solid wire to form a loop suitable for the
terminal screw.
(4) Shape the loop wire properly, place it on the terminal plate and fix
it securely with the removed terminal screw using a screwdriver.
19
Strip 15/16" (25 mm)
(3) Insert the wire and tighten the terminal screw completely using a
screwdriver.
Solid wire
Loop
Insulation
Fig. 10
For stranded wiring
(1) Cut the wire end with a cutting pliers, then strip the insulation to expose the stranded wiring about 3/8" (10 mm) and
tightly twist the wire ends. (Figs. 11 and 12)
(2) Using a screwdriver, remove the terminal screw(s) on the terminal plate.
(3) Using a ring connector fastener or pliers, securely clamp each stripped wire end with a ring connector. (Fig. 11)
(4) Place the ring connector wire, and replace and tighten the removed terminal screw using a screwdriver. (Fig. 13)
Strip 3/8" (10 mm)
Special
washer
Screw
Twist wire ends
Stranded wire
Ring connector
Ring
connector
Screw and
special washer
Terminal plate
Wire
Ring
connector
Wire
Fig. 11
Fig. 12
Fig. 13
4. How to Install the Outdoor Unit
First refer to Section 2. Installation Site Selection.
Lock nut
Cabinet
4-1. Wiring Instructions for the Outdoor Unit
Regulations on wire size differ from locality to locality.
For field wiring requirements, please refer to your
local electrical codes. Make sure that the installation
fully complies with all local and national regulations.
Terminal
block
(1) Remove access panel “C”. (Fig. 14)
(2) Connect the inter-unit and power supply line
according to the drawing on the panel side.
Conduit
plate
(3) Be sure to size each wire allowing approx. 4"
(10 cm) longer than the required length for
wiring. Store excess wiring inside the cabinet.
(4) When connections are completed, check that all
connections are correct as shown in the wiring
system diagram on panel side.
Access panel “C”
Plug
(5) Be sure to ground the unit according to your
local codes.
Inter unit
(Conduit)
Power supply
(Conduit)
Fig. 14
20
5. Refrigerant Tubing
Deburring
After
Before
5-1. Use of the Flaring Method
Many of the conventional split system air conditioners
employ the flaring method to connect refrigerant tubes
which run between indoor and outdoor units. In this
method, the copper tubes are flared at each end and
connected with flare nuts.
5-2. Flaring Procedure with a Flare Tool
(1) Cut the copper tube to the required length with a
tube cutter. It is recommended to cut approx. 12" to
20" (30 to 50 cm) longer than the tubing length you
estimate.
Fig. 15
Copper
tubing
(2) Remove burrs at the end of the copper tube with a
tube reamer or file. This process is important and
should be done carefully to make a good flare.
(Fig. 15)
Reamer
NOTE
When reaming, hold the tube end downward and be
sure that no copper scraps fall into the tube. (Fig. 16)
Fig. 16
(3) Remove the flare nut from the unit and be sure to
mount it on the copper tube.
If the previous flare tool
(clutch-type) is used:
If the special R410A
flare tool is used:
(4) Make a flare at the end of copper tube with a flare
tool.* (Figs. 17 and 18)
0 to 0.0196"
(0 to 0.5 mm)
(*Use “RIDGID” or equivalent.)
NOTE
0.0472" (1.2 mm)
Adjust so that the amount of tube
protrusion is as shown in the figure.
Fig. 17
A good flare should have the following characteristics:
inside surface is glossy and smooth.
edge is smooth.
tapered sides are of uniform length.
Flare nut
Copper
tubing
5-3. Caution before Connecting Tubes Tightly
a)
b)
c)
Be sure to apply a sealing cap or water-proof tape
to prevent dust or water from getting into the tubes
before they are used.
Flare tool
Fig. 18
Be sure to apply refrigerant lubricant to the matching surfaces of the flare and union before connecting them together. This is effective for reducing gas
leaks. (Fig. 19)
Apply refrigerant
lubricant here and here
Fig. 19
For proper connection, align the union tube and
flare tube straight with each other, then screw in the
flare nut lightly at first to obtain a smooth match.
(Fig. 20)
Union
Flare nut
Fig. 20
21
5-4. Connecting Tubing between Indoor and
Outdoor Units
a)
b)
Torque wrench
Tightly connect the indoor side refrigerant tubing extended from the wall with the outdoor side tubing. (Fig. 21)
Spanner
Indoor unit
To fasten the flare nuts, apply specified torque as:
Outdoor unit
Table 5
Tube Dia.
Nut
Fig. 21
Tightening Torque
1/4" (6.35 mm)
21/32" (17 mm)
Approx. 120 – 160 lbs·in (140 – 180 kgf·cm)
3/8" (9.52 mm)
7/8" (22 mm)
Approx. 300 – 360 lbs·in (340 – 420 kgf·cm)
1/2" (12.70 mm)
1-1/32" (26 mm)
Approx. 430 – 480 lbs·in (490 – 550 kgf·cm)
5/8" (15.88 mm)
1-5/32" (29 mm)
Approx. 590 – 710 lbs·in (680 – 820 kgf·cm)
Insulation
Thickness:
min. 5/16"
(8 mm)
Min.
5/16"
(8 mm)
5-5. Insulation of Refrigerant Tubing
Fig. 22
IMPORTANT
To prevent heat loss and wet floors due to dripping of condensation, both tubes must be well insulated with a
proper insulation material.
The thickness of the insulation should be a minimum 5/16"
(8 mm). (Fig. 22)
Insulation tape (supplied)
Flare insulation (1/8"(T3, supplied) )
Tube insulation
(not supplied)
Flare nut
Taping the flare nuts
Vinyl tie (supplied)
Wind the insulation tape around the flare nuts at the
tube connections. Secondly cover up the tubing connections with the flare insulation (1/8" (T3, supplied)). Then
wind the other flare insulation (3/16" (T5, supplied)).
Finally, fasten the insulation at both ends with the supplied vinyl ties. (Fig. 23)
Fig. 23
Drain hose insulation
and vinyl tie
(supplied)
Insulation material
Drain pipe and insulation
(not supplied)
Drain hose
and hose band
(supplied)
The material used for insulation must have good insulation characteristics, be easy to use, be age resistant,
and must not easily absorb moisture.
CAUTION
Flare insulation (3/16"(T5, supplied) )
Refrigerant tubing
and insulation
(not supplied)
Insulation tape (supplied)
Vinyl tie (supplied)
Flare
insulation (supplied)
After a tube has been insulated, never try to bend it into a
narrow curve because it can
cause the tube to break or
crack.
The procedure used for installing
the insulation for both wide and
narrow tubes are the same.
Fig. 24
Never grasp the drain or refrigerant connecting outlets when moving the unit.
22
5-6. Taping the Tubes
(1) At this time, the 2 refrigerant tubes (and electrical wire
if local codes permit) should be taped together with
armoring tape. The drain hose may also be included
and taped together as 1 bundle with the tubing.
(2) Wrap the armoring tape from the bottom of the outdoor
unit to the top of the tubing where it enters the wall. As
you wrap the tubing, overlap half of each previous tape
turn. (Fig. 25)
Clamp
Insulated tubes
(3) Clamp the tubing bundle to wall, using 1 clamp approx.
every 47" (120 cm).
Drain hose
Apply putty here
NOTE
Do not wind the armoring tape too tightly, since this will
decrease the heat insulation effect. Also, be sure the condensation drain hose splits away from the bundle and drips
clear of the unit and the tubing.
Fig. 25
Tubing
5-7. Finishing the Installation
Fig. 26
After finishing insulating and taping over the tubing, use
sealing putty to seal off the hole in the wall to prevent rain
and draft from entering. (Fig. 26)
Indoor unit
6. Air Purging
Air and moisture remaining in the refrigerant system have
undesirable effects as indicated below. Therefore, they must
be purged completely.
pressure in the system rises
operating current rises
cooling (or heating) efficiency drops
moisture in the air may freeze and block capillary tubing
water may lead to corrosion of parts in the refrigerant system
Outdoor unit
Air Purging with a Vacuum Pump (for Test Run)
(1) Check that each tube (both narrow and wide tubes)
between the indoor and outdoor units have been properly connected and all wiring for the test run has been
completed. Note that both narrow and wide tube service
valves on the outdoor unit are kept closed at this stage.
Manifold valve
(Exclusively for R410A)
(2) Using an adjustable wrench or box wrench, remove the
valve caps from the service valve on both narrow and
wide tubes.
(3) Connect a vacuum pump and a manifold valve (with
pressure gauges) to the service port on the wide tube
service valve. (Fig. 27)
CAUTION
CAUTION
Pressure
gauge
Lo
Hi
The service port on the wide tube service valve
uses a Schrader core valve to access the
refrigerant system. The valve core is similar to
those used in automobile tires. Therefore, be
sure to use a vacuum hose connector which
has a push-pin inside.
Be sure to use a manifold valve for air
purging. If it is not available, use a stop
valve (field supply) for this purpose. The
“Hi” knob of the manifold valve must
always be kept closed.
23
Charging hose
(Exclusively for R410A)
Vacuum pump adapter
(Exclusively for R410A)
(with reverse flow prevention)
Vacuum pump
Fig. 27
(4) With the “Lo” knob of the manifold valve open, run
the vacuum pump. The operation time for the vacuum pump varies with tubing length and the capacity
of the pump. The following table shows the amount
of time for evacuation:
NOTE
To prevent other refrigerants from being mistakenly
charged to units which use R410A, the size of the
charge port on the service valve is different from the
one for other refrigerant types. For servicing such as
recharging, the specified charging hose, manifold and
vacuum pump adapter (with reverse flow prevention)
for R410A must be used.
Table 6
Required time for evacuation when
26.4 gal/h (100 liter/h) vacuum pump is used
If tubing length is
less than 33 ft. (10 m)
If tubing length is
more than 33 ft. (10 m)
10 min. or more
15 min. or more
NOTE
(5) With the vacuum pump still running, close the “Lo”
knob of the manifold valve. Then stop the vacuum
pump.
The required time in Table 6 is calculated based on the
assumption that the ideal (or target) vacuum condition
is around 0.193 psi (10 mmHg abs.).
(6) With the hex wrench, turn the valve stem on the
narrow tube service valve counter-clockwise by
90 degrees (1/4 turn) for 10 seconds, and then turn
the stem clockwise to close it again. (Fig. 28)
90° (1/4 turn)
Narrow tube
Hex wrench
CAUTION
Be sure to completely insert the hex
wrench before attempting to turn the valve.
(7) Leak test all joints at the tubing (both indoor and outdoors) with
soapy water. Bubbles indicate a leak. Tighten the joint more
when leaks, then check if there is no leak. Be sure to wipe off the
soap with a clean cloth.
(8) With the hex wrench, turn the wide tube service valve stem
counter-clockwise to fully open the valve.
(9) Turn the narrow tube service valve stem counter-clockwise to
fully open the valve.
(10) Loosen the vacuum hose connected to the wide tube service
port slightly to release the pressure. Then, remove the hose.
CAUTION
This may cause the refrigerant gas to
leak. In order to avoid this, take off the
hose quickly.
(11) Fasten the valve cap on the wide tube service port securely
with an adjustable wrench or box wrench. Next, mount the
valve cap on the service valve and tighten it to 170 lbs·in
(200 kgf·cm) with a torque wrench. This process is very
important to prevent gas from leaking from the system.
(12) Test run the air conditioner. (See next page.)
(13) While the air conditioner is running, apply liquid soap to
check for any gas leaks around the service valves or caps.
(14) If there is no leakage, stop the air conditioner.
(15) Wipe off the soap on the tubing.
This completes air purging with a vacuum pump and the air conditioner is ready for actual operation.
24
Wide tube
Valve cap
Vacuum hose to manifold valve
Fig. 28
How to Test Run the Air Conditioner
After turning on the power of the air conditioner, use the
remote controller and follow the steps below to conduct
the test run.
(1) Set the remote controller in Test Run mode. (Fig. 29)
a)Press and hold the HIGH POWER button and the
1HR. TIMER button.
b)Then press and hold the ACL (Reset) button with
a pointed object such as the tip of a pen. After 5
seconds, release the ACL button first.
ON/OFF
operation
button
HIGH POWER
button
c) Then release the HIGH POWER and 1HR. TIMER
buttons.
d)
1HR.
TIMER
button
appears and “oP-1” blinking in the remote controller clock display area. (Fig. 30)
(2) Start Cooling mode test run by pressing the ON/OFF
operation button of the remote controller. (Fig. 29)
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with the 3 indicator lamps (OPERATION lamp,
TIMER lamp, and HIGH POWER lamp) on the
main unit blinking. (Fig. 31)
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operation, and cool air will start to be felt. Cooling
mode test run is unaffected by the room temperature.
ACL
(Reset)
button
Fig. 29
(3) Press the ON/OFF operation button of the remote
controller again to stop the test run. (Fig. 29)
(4) Finally press the ACL (Reset) button of the remote
controller to release it from Test Run mode to return
to normal mode. (Fig. 29)
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controller clock display area.
NOTE
Fig. 30
Troubleshooting:
In the event that the green OPERATION lamp is blinking
upon powering up the system, an error condition exists.
In this case, refer to the self-diagnostics procedure
which can be seen by opening the air-intake grille.
IMPORTANT
After the test run is completed, be sure to press the ACL
(Reset) button to return to normal mode. The air conditioner will not operate correctly if this is not done.
OPERATION button
OPERATION lamp
TIMER lamp
HIGH POWER lamp
REMOTE CONTROL receiver
Fig. 31
25
Basic Functions of the Service Valves
The basic functions of the service valves are given in Table 7 below.
Table 7
Narrow Tube Service
Valve (2-Way)
Action
Wide Tube Service
Valve (3-Way)
O-ring
CLOSED
Valve cap
Stem
Shipping
Fully OPEN
Operating and
test running
the air conditioner
Fully OPEN
Measuring pressure
*
and gas charging
CLOSED
Air purging with
* The service port on the wide tube service valve uses a Schrader core valve
to access the refrigerant system.
Therefore, be sure to use a hose connector which has a push-pin inside.
(Fig. 32)
*
a vacuum pump
Service valve
Hose with push-pin
CAUTION
When opening or closing the service valve
stem, use the hex
wrench. Be sure to fully
seat the wrench before
turning the valve.
Close
PUSH
Open
Hex
wrench
NOTE
External diameter of service port
R410A: 5/16"
Fig. 33
Fig. 32
Pump Down
(2) Using a hex wrench, turn the narrow tube service
valve clockwise all the way to close the service
valve. (Be sure to confirm that the wide tube service
valve is fully open.)
Pump down means collecting all refrigerant gas in the
system back into the outdoor unit without losing any of
the gas. Pump down is used when the unit is to be
moved or before servicing the refrigerant circuit.
(3) Press the operation button and start cooling operation.
Pump Down Procedure
Be sure to carry out pump down with the unit in
Cooling mode.
(4) When the low pressure gauge reading falls to 14.2 to
7.1 psi (1 to 0.5 kg/cm2), fully close the wide tube
valve stem. Then quickly stop the unit.
(1) Connect the Lo side charging hose of the manifold
valve to the service port on the wide tube service
valve.
(5) Disconnect all gauges and hoses, and replace the
valve caps as they were before.
26
Service Valve Connections
a)
Temporary connection:
Screw in 3 – 5 turns by hand. (Fig. 34)
b)
To fasten the flare nuts, apply specified torque
as Table 8 and Fig. 35.
Table 8
Tube Dia.
Nut
Fig. 34
Tightening Torque
1/4" (6.35 mm)
21/32" (17 mm)
Approx. 120 – 160 lbs·in (140 – 180 kgf·cm)
3/8" (9.52 mm)
7/8" (22 mm)
Approx. 300 – 360 lbs·in (340 – 420 kgf·cm)
1/2" (12.70 mm)
1-1/32" (26 mm)
Approx. 430 – 480 lbs·in (490 – 550 kgf·cm)
5/8" (15.88 mm)
1-5/32" (29 mm)
Approx. 590 – 710 lbs·in (680 – 820 kgf·cm)
Torque wrench
7. Remote Controller Installation Position
Fig. 35
The remote controller can be operated from either a
non-fixed position or a wall-mounted position.
CAUTION
To ensure that the air conditioner operates correctly, do
not install the remote controller in the following places:
In direct sunlight
Be sure to tighten the flare nut
using the prescribed torque. If the
nut is over-tightened, refrigerant
leakage may occur.
Behind a curtain or other place where it is covered
More than 26' (8 m) away from the air conditioner
In the path of the air conditioner’s airstream
Where it may become extremely hot or cold
Where it may be subject to electrical or magnetic
interference
Where there is an obstacle between the remote con-
troller and the air conditioner (since a check signal is
sent from the remote controller every 5 minutes)
7-1. Mounting on a Wall
Before mounting the remote controller, press the
ON/OFF operation button at the mounting location to
make sure that the air conditioner operates from that
location. The indoor unit should make a beeping sound
to indicate that it has received the signal.
Rear side
Remote control
holder
Press
Set in
place
Hole
To prevent loss of the remote controller,
you can connect the remote controller
to the holder by passing a string through
the remote controller and attachment hole.
Mounting screws
5/32 5/8" (4 16 mm)
(included)
To take out the remote controller, pull it forward.
Fig. 36
27
8. Address Switch
Tab
8-1. Address Setting of the Remote Controller
The address can be set in order to prevent interference between remote controllers when 2 indoor units
are installed near each other. The address is normally
set to “A.” To set a different address, it is necessary to
change the address on the second remote controller.
NOTE
Fig. 37
Once changed, you cannot restore the original
address setting of the air conditioner.
(1) Switch on the power source.
(2) Break the address-setting tab marked “A” on the
second remote controller to change the address
(Fig. 37). When the tab is removed, the address is
automatically set to B (Fig. 38).
(3) Press and hold the remote controller HIGH
POWER button and 1HR. TIMER button. Then,
press and hold the ACL (Reset) button with a
pointed object such as the tip of a pen. After 5
seconds, release the ACL button first, then
release the HIGH POWER and 1HR. TIMER buttons. “oP-1” (Test Run) appears, blinking in the
remote controller clock display area.
ACL button
Fig. 38
(4) Each time the 1HR. TIMER button is pressed, the
display changes as shown below. Press this button 2 times to change the display to “oP-7”
(Address setting). (Fig. 39)
Test run mode
Self-diagnostic mode
ON/OFF
operation
button
Address setting mode
HIGH POWER
button
(5) “oP-7” has now been selected for address setting.
1HR.
TIMER
button
(6) Press the ON/OFF operation button on the remote
controller. (Fig. 39) Check that the “beep” signalreceived sound is heard from the second indoor
unit (approximately 5 times). The sound you hear
is the signal that the remote controller address
has been changed.
(7) Finally press the remote controller ACL (Reset)
button to cancel the blinking “oP-7” display.
(Fig. 39)
Changing of the second remote controller address is
now completed.
ACL
(Reset)
button
Fig. 39
28
APPENDIX C Operating Instructions
CZ-RD515U
(852-6-4181-230-00-1)
A-3
Operating Instructions
Wired Remote Controller
Model No.
CZ-RD515U
This wired remote controller is designed for
both the “COOL/DRY/HEAT Model” and
“COOL/DRY Model” indoor unit.
Once the wired remote controller is
connected, the wireless remote controller
cannot be used.
Before operating the unit, read these operating instructions thoroughly and keep them for future reference.
Panasonic Corporation
1006 Kadoma, Kadoma City, Osaka, Japan
85264181230001
CV6233187877
FEATURES
• Microprocessor Controlled Operation
The interior compartment of the remote controller contains several
features to facilitate automatic operation, easy logically displayed
for easy use.
• Air Sweep Control
This function moves a flap up and down in the air outlet, directing
air in a sweeping motion around the room and providing comfort in
every corner.
• 24-Hour ON or OFF Timer
This timer can be set to automatically turn the unit on or off at any
time within a 24 hour period.
• Automatic Restart Function for Power Failure
Even when power failure occurs, preset programmed operation
can be reactivated once power resumes.
• 1-Hour OFF Timer
This timer can be set to automatically turn off the unit at any time
after one hour.
• Automatic Switching between Cooling and Heating
This unit automatically switches between cooling operation and
heating operation according to the difference between the room
temperature and the temperature setting.
(This function is available only for “Single use” of COOL/DRY/
HEAT Model.)
• Night Setback
This function saves energy by controlling operation to provide a
quieter operating sound than normal.
• Automatic and 3-step Fan Speed
Auto/High/Medium/Low
• Hot Start Heating System
Right from the start, the air is warm and comfortable. This system
prevents any cold blasts at the beginning while the heat pump is
warming up, or even defrosting.
(This function is available only for COOL/DRY/HEAT Model.)
NOTE
• Since the wired remote controller is designed to be commonly used for various air conditioners, some of the functions of the wireless
remote controller supplied with the indoor unit cannot be used.
• “Single use” means that only one indoor unit is connected with one outdoor unit in a one-unit-to-one-unit configuration.
• “Multiple use” (i.e. Flexi-Multi system) means that two or more indoor units are connected with one outdoor unit in a multiple-unit-to-one-unit
configuration.
CONTENTS
Page
FEATURES ......................................................................................................................................... 2
PRODUCT INFORMATION ................................................................................................................ 2
SAFETY PRECAUTIONS ................................................................................................................... 2
INSTALLATION LOCATION ................................................................................................................ 3
ELECTRICAL REQUIREMENTS........................................................................................................ 3
SAFETY INSTRUCTIONS .................................................................................................................. 3
REMOTE CONTROLLER ................................................................................................................... 4
OPERATION WITH THE REMOTE CONTROLLER ........................................................................... 7
1. Automatic Operation (only for COOL/DRY/HEAT Model) .................................................... 7
2. Manual Operation ................................................................................................................ 7
3. Adjusting the Fan Speed ..................................................................................................... 8
4. Fan Only .............................................................................................................................. 8
5. Night Setback Mode ............................................................................................................ 8
SPECIAL REMARKS.......................................................................................................................... 8
SETTING THE TIMER........................................................................................................................ 9
USING THE 1-HOUR OFF TIMER ................................................................................................... 10
ADJUSTING THE AIRFLOW DIRECTION ....................................................................................... 10
PRODUCT INFORMATION
If you have problems or questions concerning your wired
remote controller, you will need the following information.
Model No. __________________________________
SAFETY PRECAUTIONS
The following symbols used in this manual, alert you
to potentially dangerous conditions to users, service
personnel or the appliance:
This symbol refers to a hazard or unsafe
practice which can result in severe
personal injury or death.
Date of purchase _____________________________
Dealer’s address _____________________________
Phone number _______________________________
2
CAUTION
This symbol refers to a hazard or unsafe
practice which can result in personal
injury or product or property damage.
INSTALLATION LOCATION
We recommend that this wired remote controller be
installed properly by qualified installation technicians
in accordance with the Installation Instructions
provided with the unit.
• Do not install this wired remote
controller where there are fumes or
flammable gases, or in an extremely
humid space such as a greenhouse.
• Do not install the wired remote
controller where excessively high
heat-generating objects are placed.
• To prevent possible hazards from insulation failure,
the unit must be grounded.
• Do not clean inside the indoor and outdoor units by users.
Engage authorized dealer or specialist for cleaning.
• In case of malfunction of this appliance, do not repair by
yourself. Contact to the sales dealer or service dealer for a
repair.
• Refrigerant gas leakage may cause fire.
• For safety, be sure to turn the air conditioner off and
also to disconnect the power before cleaning.
• Pull off the power plug from a receptacle, or switch off the
breaker, or switch off the power disconnecting mean to
isolate the air conditioner from the main power supply in
case of emergency.
Avoid:
To protect the air conditioner from heavy corrosion, avoid installing
the outdoor unit where salty sea water can splash directly onto it or
in sulphurous air near a spa.
ELECTRICAL REQUIREMENTS
1. All wiring must conform to the local electrical codes.
Consult your dealer or a qualified electrician for details.
2. Each unit must be properly grounded with a ground (or
earth) wire or through the supply wiring.
3. Wiring must be done by a qualified electrician.
NOTE
Pull off the power plug from a receptacle, or switch off the breaker, or
switch off the power disconnecting mean to isolate the air conditioner
from the main power supply when not in use for a long time.
CAUTION
• Do not turn the air conditioner on and off from the power
mains switch. Use the ON/OFF operation button.
• Do not stick anything into the air outlet of the outdoor unit.
This is dangerous because the fan is rotating at high
speed.
• Do not touch the air inlet or the sharp aluminum fins
of the outdoor unit. You may get injured.
• Keep the fire alarm and the air outlet at least 1.5m away from
the unit.
• Do not let children play with the air conditioner.
• Do not cool or heat the room too much if babies or invalids
are present.
• Do not sit or step on the unit. You may fall down
accidentally.
• Do not stick any object into the FAN CASE.
You may be injured and the unit may be damaged.
SAFETY INSTRUCTIONS
• Read this Instruction Manual carefully before using
this air conditioner. If you still have any difficulties
or problems, consult your dealer for help.
• This air conditioner is designed to give you
comfortable room conditions. Use this only for its
intended purpose as described in this Instruction
Manual.
• Confirm to authorized dealer or specialist on usage of
specified refrigerant type.
Using of refrigerant other than the specified type may cause
product damage, burst and injury etc.
• Never touch the unit with wet hands.
• Never use or store gasoline or other flammable vapor or
liquid near the air conditioner — it is very dangerous.
• Do not use this appliance in a potentially explosive
atmosphere.
• This air conditioner has no ventilator for intaking fresh air
from outdoors. You must open doors or windows frequently
when you use gas or oil heating appliances in the same
room, which consume a lot of oxygen from the air.
Otherwise there is a risk of suffocation in an extreme case.
• Do not swallow the battery.
• After removing the battery from remote controller, keep it
away from the reach of children. The battery can cause
death by suffocation if swallowed.
NOTICE
• This device complies with part 15 of the FCC Rules.
Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and (2) this
device must accept any interference received, including
interference that may cause undesired operation.
• This equipment has been tested and found to comply with
the limits for a Class B digital device, pursuant to part 15 of
the FCC Rules.
These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio
communications. However, there is no guarantee that
interference will not occur in a particular installation. If this
equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference
by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from
that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for
help.
• FCC Caution: To assure continued compliance, follow the
attached installation instructions. Any changes or modifications
not expressly approved by the party responsible for compliance
could void the user's authority to operate this equipment.
3
REMOTE CONTROLLER
NOTE
The descriptions on the AUTO (
“COOL/DRY Model.”
) or HEAT (
) operation mode are only for the “COOL/DRY/HEAT Model,” and not for the
Display
Information on the operating conditions is displayed while the remote
controller is switched on. If the unit is turned off, only the mode that was set
previously is still displayed.
Temperature setting buttons (TEMP.)
Press the
button to increase the set temperature.
Press the
button to reduce the set temperature.
The temperature setting changes by 2 °F each time one of the TEMP. buttons
is pressed.
FAN SPEED selector button
: The air conditioner automatically decides the fan speeds.
: High fan speed
: Medium fan speed
: Low fan speed
NIGHT SETBACK button
For details, see “5. Night Setback Mode”. When you press this button in the
HEAT, DRY or COOL mode, the
mark appears in the display, and the
remote controller will automatically adjust the set temperature to save energy.
FLAP button
Press this button either to select the setting of the airflow direction to one of
the six possible positions manually or to select the sweep function which
moves the flap up and down automatically.
: The airflow direction can be set manually. (six positions)
: The flap moves up and down automatically.
NOTE
When you press the FLAP button, the air flow direction will be changed one by
one as follows.
SWEEP
Timer and Present Time setting buttons
First, press the SET button to select the mode (ON, OFF and Present Time
settings) you want.
Each time you press the ‘‘HH’’ button, the hours advance by one.
(PM0, PM1.....PM11, AM0, AM1.....AM11)
Each time you press the ‘‘MM’’ button, the minutes advance by one when
setting Present Time and by ten when setting ON and OFF Time.
SET button
For details, see “SETTING THE TIMER”.
Press this button to select the mode you want to program.
4
ACL button (ALL CLEAR)
When you press the ACL button while the
operation button is ON, all settings are cleared.
Press the ACL button if the air conditioner is not
operating correctly.
ON/OFF operation button
This button is for turning the air conditioner on and off.
MODE selector button
Use this button to select AUTO, HEAT, DRY, COOL or FAN mode.
(AUTO)
: When this setting is selected, the air conditioner calculates the difference between the
thermostat setting and the room temperature and automatically switches to the ‘‘COOL’’ or
‘‘HEAT’’ mode as appropriate. (This function is available only for “Single use” of COOL/DRY/
HEAT Model.)
(HEAT)
(DRY)
(COOL)
(FAN)
: The air conditioner makes the room warmer.
: The air conditioner reduces the humidity in the room.
: The air conditioner makes the room cooler.
: The air conditioner works only as a circulation fan except for “Multiple use” of COOL/DRY/
HEAT Model.
1 HR. TIMER button (1-HOUR OFF TIMER)
: When you press this button, regardless of whether the unit is operating or stopping, the unit operates for
one hour and then shuts down.
TIMER SELECT button
No display : The timer does not operate.
:
The air conditioner starts at the set time.
:
The air conditioner stops at the set time.
:
The air conditioner stops and starts, or starts and stops, at the set times every day.
Sensor
A temperature sensor inside the remote controller senses the room temperature.
SENSOR button
When you press this button (use a small-tipped object such as a ballpoint pen), the
mark will disappear at the
display. And the room temperature is detected by the sensor which is built into the remote controller and the air
conditioner is controlled accordingly.
NOTE
If the remote controller is located near a heat source, such as a space heater or in direct sunlight, press the
SENSOR button to switch to the sensor on the indoor unit.
NOTE
The indoor fan runs continuously when the system is in normal operation. It does not turn off when the desired room temperature is
reached. If Night Set Back mode is selected, the fan will turn off intermittently during cooling operation in order to control air flow.
5
REMOTE CONTROLLER (DISPLAY)
Displayed when indoor unit sensor
is in use
Displayed when operating NIGHT
SETBACK mode
Displayed when setting
temperature
Displayed when temperature is
shown
Displayed when setting timer
Symbols
(1) Operation mode
AUTO .....................................
(only for COOL/DRY/HEAT
Model)
HEAT ......................................
(only for COOL/DRY/HEAT
Model)
(3) Temperature setting
60 – 86 °F ..............................
When set to 80 °F
temperature indication ...........
(4) Timer
MILD DRY ..............................
24-hour clock with ON/OFF
program Timer .......................
COOL .....................................
ON Timer. ..............................
FAN ........................................
OFF Timer. ............................
(2) Fan speed
Automatic operation ...............
1-hour OFF Timer. .................
HIGH .....................................
(5) NIGHT SETBACK..................
MEDIUM.................................
(6) Flap angle indication..............
LOW .......................................
6
Sweep indication....................
OPERATION WITH THE REMOTE CONTROLLER
1. Automatic Operation
(only for COOL/DRY/HEAT Model)
2. Manual Operation
• Single use
This unit automatically switches between cooling operation and
heating operation according to the difference between the room
temperature and the temperature setting.
• Multiple use
The air conditioner calculates the difference between the
thermostat setting and room temperature, and automatically
determines the mode to operate under cooling or heating. Then,
the air conditioner continuously operates under the mode selected
at initial operation.
STEP 2
STEP 3
STEP 1
STEP 4
STEP 5
NOTE
STEP 2
Check that the circuit breaker on the power panel is
turned on.
If the automatic operation settings of the unit do not
meet your needs, press the setting buttons as
described below and change the settings as desired.
STEP 1
STEP 1
NOTE
Press the MODE selector button
and select the desired mode.
For heating operation
o
For dehumidifying operation
o
For cooling operation
o
For fan only operation
o
(No Fan mode in “Multiple use” of
COOL/DRY/HEAT Model)
STEP 2
To start the air conditioner, press the ON/
OFF operation button.
STEP 3
Press the TEMP. setting buttons to change
the temperature setting to the desired
temperature.
Adjustable temperature range:
86 °F max.
60 °F min.
STEP 4
Set the FAN SPEED selector button to the
setting you want.
STEP 5
Press the FLAP button and set the airflow
direction as desired.
(Refer to “ADJUSTING THE AIRFLOW
DIRECTION” on page 10.)
To stop the air conditioner, press the ON/OFF
operation button again.
Check that the circuit breaker on the power panel is
turned on.
Once
mode is selected and the unit is preset by
following the steps below, you can have the air
conditioner automatically bring the room to the desired
temperature simply by pressing the ON/OFF operation
button.
STEP 1
Press the MODE selector button to
STEP 2
Press the ON/OFF operation button.
.
To stop the air conditioner, press the ON/OFF operation
button again.
NOTE
To change the temperature setting; press the
temperature setting buttons and change the setting to
the desired temperature.
NOTE
• Choose the best position in the room for the remote
controller, which also acts as the sensor for room
comfort and transmits the operating instructions.
Once you’ve found this best position, always keep the
remote controller there.
• This appliance has a built-in 5-minute time delay
circuit to ensure reliable operation. When the
operation button is pressed, the compressor will start
running within three minutes. In the event of power
failure, the unit will stop.
• The display on the remote controller shows the setting
temperature and not the room temperature.
• When multiple indoor units are used and units in other
rooms are already operating, they will be operating
with the same mode as the operating indoor units.
(only for “Multiple use” of COOL/DRY/HEAT Model)
7
3. Adjusting the Fan Speed
A. In Cooling and DRY Mode: (
A. Automatic fan speed
Simply set the FAN SPEED selector button to the
position.
This automatically sets the best fan speed for the room
temperature.
B. Manual fan speed
and
)
When the night setback mode is selected, the air conditioner
automatically raises the temperature setting 2 °F when 30 minutes
have passed after the selection was made, and then another 2 °F
after another 30 minutes have passed, regardless of the indoor
temperature when night setback was selected. This enables you
to save energy without sacrificing comfort. This function is
convenient when gentle cooling is needed.
If you want to adjust fan speed manually during operation,
just set the FAN SPEED selector button as desired. [
,
, or
]
4. Fan Only
Setting
temperature
STEP 2
STEP 3
STEP 1
If you want to circulate air without any temperature
control, follow these steps:
STEP 1
NOTE
Press the MODE selector button to switch to
the fan mode
.
STEP 2
Press the ON/OFF operation button.
STEP 3
Press the FAN SPEED selector button to
select the fan speed of your choice (
,
or
).
There is no FAN only function in “Multiple use” of
COOL/DRY/HEAT Model.
5. Night Setback Mode
Press the NIGHT
SETBACK button
2 °F
2 °F
30 min.
30 min.
Time
B. In Heating Mode: ( )
(only for COOL/DRY/HEAT Model)
When the night setback mode is selected, the air conditioner
automatically lowers the temperature setting 4 °F when 30
minutes have passed after the selection was made, and then
another 4 °F after another 30 minutes have passed, regardless of
the indoor temperature when night setback was selected. This
enables you to save energy without sacrificing comfort. This
function is convenient when gentle heating is needed.
Setting
temperature
4 °F
4 °F
Press the NIGHT
SETBACK button
30 min.
30 min.
Time
SPECIAL REMARKS
Power failure during operation
In the event of power failure, the unit will stop. When the power is
resumed within 8 hours, the unit will restart automatically in
approximately five minutes, or 15 minutes in “Multiple use” of COOL/
DRY/HEAT Model on AUTO mode by the remote controller.
Remote Controller
The remote controller sends the setting condition to the air
conditioner regularly at five minute intervals.
Remote Controller Display
If the display malfunctions, press the ACL button.
This resets the remote controller back to the initial settings.
Make the settings again.
Night Setback Mode is used for saving energy.
Press the NIGHT SETBACK button while unit is operating.
The
mark appears in the display.
To release the night setback function, press the NIGHT SETBACK
button again.
8
SETTING THE TIMER
3. How to set the ON time
(Example) To start operation at 7:10 am.
ON TIME
Present time
Operation
1. How to set the present time
Indication
1. Press the SET button once.
The timer
indication alone
flashes and the previous settime is only displayed.
2. • Press the HH button until
The display will change
automatically back to show the
present time after about 10 sec.
AM 7 is displayed.
• Press the MM button until
10 is displayed.
(Example) To set to 9:10 pm.
3. Press the TIMER SELECT
button once to set ON time.
The present time and
displayed.
are
To cancel the setting, press the TIMER SELECT button three times.
Operation
1. Press the SET button three
times.
2. • Press the HH button until
PM 9 is displayed.
• Press the MM button until
10 is displayed.
4. How to set daily ON/OFF repeat timer
Indication
(Example) To start operation at 7:10 am. and stop the air conditioner
at 11:30 pm.
The time indication alone
flashes.
The display will flash for 10 sec.
and automatically stop flashing
except for the “ : ” symbol.
2. How to set the OFF time
Present time
OFF TIME
ON TIME
Programmed
daily ON / OFF
(Example) To stop the air conditioner at 11:30 pm.
OFF TIME
Operation
Present time
9:10 pm.
Present time
Indication
1. Press the SET button twice.
The timer
indication alone
flashes and the previous settime is only displayed.
2. • Press the HH button until
The display will change
automatically back to show the
present time after about 10 sec.
PM 11 is displayed.
• Press the MM button until
30 is displayed.
3. Press the TIMER SELECT
button twice to set OFF time.
The present time and
displayed.
To cancel the setting, press the TIMER SELECT button twice.
7:10 am.
ON
Operation
Set the timer ON/OFF times as
shown in 2 and 3.
11:30 pm.
OFF
Indication
The present time PM 9:10 and
are displayed.
are
To cancel the setting, press the TIMER SELECT button once.
NOTE
You can check the timer ON/OFF times after you have set them by
pressing the SET button.
5. Backup function
Even if the main power supply to the unit is turned off, the remote
controller will store the previous settings in its internal memory for up
to 8 hours. If the power is not turned back on within 8 hours, the
previous settings will be lost. In this case, the mode settings must be
reset by the user.
9
USING THE 1-HOUR OFF
TIMER
1. 1-Hour OFF Timer
This function causes the unit to operate for one hour and then
stop, regardless of whether the unit is on or off when this
button is pressed.
The
indicator in the display indicates that this function is
operating.
Setting procedure:
Regardless of whether the unit is operating or stopped, press the 1
HR. TIMER button.
appears in the display.
Cancellation procedure:
Press the ON/OFF operation button to turn the unit off, wait for the
unit to stop operating, and then press the ON/OFF operation button
again.
The 1-Hour Timer function is now cancelled and the unit operates
normally.
NOTE
• If, while the 1-Hour Timer function is operating, the 1HR. TIMER
button is pressed once to cancel the function and then again, the
unit continues to operate for one hour from that point in time and
then stops.
• It is not possible to use the OFF Timer and 1-Hour OFF Timer
together. Whichever function is set last takes precedence. If the 1
HR. TIMER button is pressed while the TIMER OFF function
operates, the OFF Timer is cancelled and the unit will stop
operating one hour later.
2. Operation together with the daily ON/OFF
repeat timer
The 1-Hour OFF Timer setting is given priority over the DAILY ON/
OFF REPEAT setting.
10
ADJUSTING THE AIRFLOW
DIRECTION
The vertical airflow can be adjusted by moving the flap with the
remote controller. Do not move the flap with your hands. Confirm that
the remote controller has been turned on. Use the FLAP button to
set either the sweep function or one of the six airflow direction
settings.
A. Sweep function
The flap starts moving
up and down to deliver
air over the sweep
range.
B. Setting the airflow manually
SWEEP
Referring to the above
illustration, use the
COOL
FLAP button to set the DRY
airflow direction within FAN
the range used during
the heating, cooling, or
dehumidifying
operation.
SWEEP
HEAT
NOTE
• The flap automatically closes when the unit is off.
• During the heating operation, the fan speed will be very low and the
flap will be in the horizontal position (position ) until the air being
blown out of the unit begins to warm. Once the air warms up, the
flap position and fan speed change to the settings specified with
the remote controller.
CAUTION
• Use the FLAP button on the remote controller to adjust the
position of the flap. If you move the flap by hand, the flap
position according to the remote controller and the actual
flap position may no longer match. If this should happen,
shut off the unit, wait for the flap to close, and then turn on
the unit again; the flap position will now be normal again.
• Do not have the flap pointed down during cooling operation.
Condensation may begin to form around the air vent and drip
down.
APPENDIX D INSTALLATION INSTRUCTIONS
CZ-RD515U
(852-6-4190-592-00-0)
A-4
INSTALLATION INSTRUCTIONS
Wired Remote Controller
IMPORTANT
‡ In order to install this wired remote controller onto a wall-mounted model, the connection kit
(CZ-RC515U or CZ-RC515UA), which must be purchased separately, is required.
‡ Once the wired remote controller is connected, the wireless remote controller cannot be used.
Parts supplied with the remote controller
See Table 1.
Remote controller installation guidelines
Installation location
‡ Mount the remote controller 3.3 to 4.9 ft. (1 to 1.5
meters) off the floor where it can sense the average
temperature of the room.
‡ Do not mount the remote controller in a place
exposed to direct sunlight or where it is exposed to
outside air such as near a window.
‡ Do not mount the remote controller behind a curtain or
other object so that it is separated from the air circulation of the room.
‡ Mount the remote controller inside the room being air
conditioned.
Table 1
Parts
Figure
Tapping
screws
Parts
Figure
Q'ty
26.2 ft. (8m)
Wired
remote
controller
Machine
screws
Q'ty
5/32 15/16"
(4 25mm)
5/32 15/16"
(4 25mm)
1
Wire
harness
1
2
Instruction
manual
1
2
Installation
Instructions
1
2
Spacers
Switching the room temperature sensor
Room temperature sensors are separately incorporated in both the indoor unit and the remote controller. Either sensor can
be used to sense the room temperature. The indoor unit sensor is usually used.
If you wish the remote controller to sense the room temperature, press the SENSOR button with a ballpoint pen or tool with
a small tip. (Refer to Fig. 9 on page 4 to locate the SENSOR button.)
How to install the remote controller
IMPORTANT
‡ The remote controller is set to “Cool/Dry/Heat model” at
the time of shipment from the factory. If the purchased air
conditioner is a COOL/DRY model, follow the instructions
on the label and change the switch on the reverse side of
the remote controller unit to “Cool/Dry model”. (Fig. 1)
‡ The remote controller is also set to “Single” at the time of
shipment from the factory. For multiple use, set the
switch on the reverse side of the remote controller unit to
“Multi”. (Fig. 1)
‡ After all work is completed, if any switches have been
changed, then be sure to press the ACL (Reset) button.
(Refer to Fig. 9 on page 4 to locate the ACL (Reset) button.)
Fig. 1
85264190592000 2011
CV6233187884
B. Installing directly onto the wall
(1) Insert a flathead screwdriver into the 5 tab locations and
disconnect the back plate of the remote controller by lifting up slightly. (Fig. 2-b)
The tabs are thin; take care not to chip them.
(2) Use tapping screws to directly fasten the remote controller back plate onto the wall. (Fig. 6)
(3) Insert the connector into the PCB of the remote controller
unit, and wrap the wire harness around the hook. (Fig. 4)
(4) Use nippers or a similar tool to cut out the slot on the top
of the remote controller unit. Pass the wire harness
through the slot, then hook the remote controller unit
onto the top of the back plate and install the remote controller unit.
(5) In order to conceal the exposed wiring, use a wire cover
(locally purchased) or similar means.
4-3/16"
(106mm)
In-wall junction box (locally purchased)
3-9/32"
(83.5mm)
A. Installing with in-wall junction box
(1) Install the junction box (locally purchased) into the wall.
(Figs. 2-a and 3)
(2) Pass the wire harness through the junction box and
conduit. (Fig. 3)
(3) Insert a flathead screwdriver into the 5 tab locations
and disconnect the back plate of the remote controller by
lifting up slightly. (Fig. 2-b)
The tabs are thin; take care not to chip them.
(4) Pass the wire harness connector through the cord opening on the back plate of the remote controller.
Use nippers or a similar tool to cut out the slots for the
remote controller back plate screws. Insert the spacers
and use the machine screws to install the remote controller back plate. (Fig. 3)
(5) Insert the connector into the PCB of the remote controller
unit, and wrap the wire harness around the hook. (Fig. 4)
(6) Store the excess wire harness inside the junction box,
then hook the remote controller unit onto the top of the
back plate and install the remote controller unit.
(7) To remove the remote controller unit after it has been
installed, insert a flathead screwdriver into the slot on the
bottom of the case and turn it. (Fig. 5)
Tab
2-3/8"
(60mm)
Back
plate
Fig. 2-a
Fig. 2-b
from the indoor unit
In-wall junction box
Wire harness
Opening
Wall
Back plate
Spacers
Machine
screws
Remote
controller
Fig. 3
PCB
Hook
Slot
Connector
Fig. 4
Fig. 5
NOTE
‡ When installing the remote controller back plate, be sure
that it is flat and straight. Do not over-tighten the installation screws.
Wire harness
Cut out
‡ Install the remote controller away from all sources of electrical noise.
‡ Install a noise filter or take other appropriate action if electrical noise affects the power supply circuit of the unit.
Wall
Back plate
Tapping
screws
Remote
controller
Fig. 6
2
How to wire the remote controller
Ceiling
panel
(1) Turn OFF the power and remove the ceiling panel
air-intake grille. (Refer to 3-6-1 Before Installing the
Ceiling Panel in the Installation Instructions supplied
with the indoor unit.)
(2) Remove the 3 power box cover screws and 2 control
box cover screws, then remove both covers. At this
time, take care not to drop the covers. (Fig. 7)
(3) Disconnect the 7P (IND) terminal and 4P (RC) terminal of the 7P IND and 4P RC wiring connectors and
the 5P terminal of the 5P FLAP wiring connector
from the control box PCB connectors (IND, RC,
FLAP). Disconnect each wiring connector from the
clamp that fastens it. (Fig. 7)
(4) Remove the ceiling panel. (To remove the ceiling
panel, follow the steps for 3-6 How to Install the
Ceiling Panel in the reverse order. Refer to the
Installation Instructions supplied with the indoor unit.)
Control
box
cover
Power box cover
Indicator
Fig. 7
Fig. 8-a
Indicator
7P IND and 4P RC
wiring connector
7P IND and 4P RC
wiring connector
Clamps
Wire harness
Remote
controller
5P FLAP
wiring
connector
IND RC
5P FLAP
wiring connector
7P IND and 4P RC
wiring connector
FLAP
Ceiling
panel
5P FLAP
wiring connector
4P
7P
Control PCB
Putty
Terminal cover
Indicator
Wire harness
Wire harness
Clamping strap
Fig. 8
Fig. 8-b
(5) Remove the terminal cover screws, then remove the cover. At this time, take care not to drop the cover. (Fig. 8)
(6) Pull in the wire harness from the remote controller as shown in Fig. 8-b.
‡ Remove the putty before wiring. After wiring, make sure to restore the putty.
(7) Insert the wire harness 4P terminal into the control box PCB connector (RC). (Fig. 8-a)
(8) Install the terminal cover. Then install the ceiling panel. (Refer to 3-6 How to Install the Ceiling Panel in the
Installation Instructions supplied with the indoor unit.)
(9) Insert only the 7P (IND) terminal of the 7P IND and 4P RC wiring connector into the connector (IND) on the control
box PCB. Store the 4P terminal inside the control box. (Fig. 8-a)
(10) Next, insert the 5P terminal of the 5P FLAP wiring connector into the connector (FLAP) on the control box PCB.
(Fig. 8-a)
(11) When the connections are completed, fasten the wire harness and each wiring connector with the clamps.
(12) Install the power box cover and control box cover.
(13) Install the air-intake grille. (Refer to 3-6 How to Install the Ceiling Panel in the Installation Instructions supplied
with the indoor unit.)
3
How to Test Run the Air Conditioner
After turning on the power of the air conditioner, use the
remote controller and follow the steps below to conduct
the test run.
(1) Set the remote controller in Test Run mode. (Fig. 9)
a)Press and hold the NIGHT SETBACK button and
the 1HR. TIMER button.
ON/OFF
operation button
b)Then press and hold the ACL (Reset) button with
a pointed object such as the tip of a pen. After 5
seconds, release the ACL button first.
NIGHT SETBACK
button
c) Then release the NIGHT SETBACK and 1HR.
TIMER buttons.
1 HR.TIMER
button
d)
appears and “oP-1” blinking in the remote
controller clock display area. (Fig. 10)
(2) Start Cooling mode test run by pressing the ON/OFF
operation button of the remote controller. (Fig. 9)
ACL (Reset)
button
‡ This starts the fan producing uncooled forced air
with the 3 indicator lamps (OPERATION lamp,
TIMER lamp, and HIGH POWER lamp) on the
main unit blinking. (Fig. 11)
SENSOR button
Fig. 9
‡ After 3 minutes, the system shifts into cooling
operation, and cool air will start to be felt. Cooling
mode test run is unaffected by the room temperature.
(3) Press the ON/OFF operation button of the remote
controller again to stop the test run. (Fig. 9)
Fig. 10
(4) Finally press the ACL (Reset) button of the remote
controller to release it from Test Run mode to return
to normal mode. (Fig. 9)
‡ “ ” and “oP-1” will disappear from the remote
controller clock display area.
NOTE
Troubleshooting:
In the event that the green OPERATION lamp is blinking upon powering up the system, an error condition
exists. In this case, refer to the self-diagnostics procedure which can be seen by opening the air-intake grille.
OPERATION button
OPERATION lamp
TIMER lamp
HIGH POWER lamp
IMPORTANT
REMOTE CONTROL receiver
After the test run is completed, be sure to press the
ACL (Reset) button to return to normal mode. The air
conditioner will not operate correctly if this is not done.
Fig. 11
WI1011-0
Printed in China
4
DC1111-0
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