Sanyo R410A User Manual

Page 1
X
A
U
D
T
K
Outdoor Units
85464359982001 ©SANYO 2006 SANYO Electric Co., Ltd.
Gunma, Japan
– W-2WAY System Air Conditioner –
Class 7 9 12 18 24 36 48
X 4-Way Air Discharge Semi-Concealed Type XHX1252 XHX1852 XHX2452 XHX3652
A 1-Way Air Discharge Semi-Concealed Type AHX0752 AHX0952 AHX1252
U Concealed Duct Type UHX0752 UHX1252 UHX1852 UHX2452 UHX3652
D
Concealed Duct
DHX3652 DHX4852
High-Static Pressure Type
T Ceiling-Mounted Type THX1252 THX1852 THX2452
K Wall-Mounted Type KHX0752 KHX0952 KHX1252 KHX1852 KHX2452
for Refrigerant R410A
* Refrigerant R410A is used in the outdoor units.
INSTALLATION INSTRUCTIONS
Class 90 140
C ECO-i W-2WAY
CHDX09053 CHDX14053
Optional Controllers
Timer Wired Remote Controller RCS-TM80BG
Wireless Remote Controller (For U, D Type) RCS-BH80AAB.WL
Wireless Remote Controller (For X Type) RCS-SH80AAB.WL
Wireless Remote Controller (For A, T Type) RCS-TRP80AAB.WL
RC Wireless Remote Controller (For K Type) RCS-SH1AAB
Simplified Remote Controller RCS-KR1AGB
System Controller SHA-KC64UG
Intelligent Controller SHA-KT256BA
Communication Adaptor SHA-KA128AAB
Remote Sensor ART-K45AGB
LonWorks Interface SHA-LN16UAB
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page a
Page 2
2
IMPORTANT! Please Read Before Starting
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.
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 result in severe personal injury or death.
This symbol refers to a hazard or unsafe practice which can result in personal injury or product or property damage.
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 Case of Improper Installation
The manufacturer shall in no way be responsible for improper installation or maintenance service, including fail­ure to follow the instructions in this document.
SPECIAL PRECAUTIONS
When Wiring
ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJURY OR DEATH. ONLY A QUALIFIED, EXPERIENCED ELECTRICIAN SHOULD ATTEMPT TO WIRE THIS SYSTEM.
• Do not supply power to the unit until all wiring and tubing are completed or reconnected and checked.
• Highly dangerous electrical voltages are used in this sys­tem. Carefully refer to the wiring diagram and these instructions when wiring. Improper connections and inad­equate grounding can cause accidental injury or death.
• Ground the unit following local electrical codes.
• Connect all wiring tightly. Loose wiring may cause over­heating at connection points and a possible fire hazard.
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.
When Installing…
…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.
…In Moist or Uneven Locations
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.
…In an Area with High Winds
Securely anchor the outdoor unit down with bolts and a metal frame. Provide a suitable air baffle.
…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.
When Connecting Refrigerant Tubing
• Ventilate the room well, in the event that is refrigerant 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.
• Keep all tubing runs as short as possible.
• Use the flare method for connecting tubing.
• Apply refrigerant lubricant to the matching surfaces of the flare and union tubes before connecting them, then tighten the nut with a torque wrench for a leak-free con­nection.
• Check carefully for leaks before starting the test run.
When Servicing
• Turn the power OFF at the main power box (mains) before opening the unit to check or repair electrical parts and wiring.
• Keep your fingers and clothing away from any moving parts.
• Clean up the site after you finish, remembering to check that no metal scraps or bits of wiring have been left inside the unit being serviced.
• Ventilate any enclosed areas when installing or testing the refrigeration system. Escaped refrigerant gas, on contact with fire or heat, can produce dangerously toxic gas.
• Confirm after installation that no refrigerant gas is leak­ing. If the gas comes in contact with a burning stove, gas water heater, electric room heater or other heat source, it can cause the generation of poisonous gas.
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 2
WARNING
CAUTION
WARNING
CAUTION
Page 3
2. The standards for minimum room volume are as fol­lows.
(1) No partition (shaded portion)
(2) When there is an effective opening with the adjacent
room for ventilation of leaking refrigerant gas (opening without a door, or an opening 0.15% or larger than the respective floor spaces at the top or bottom of the door).
(3) If an indoor unit is installed in each partitioned room
and the refrigerant tubing is interconnected, the small­est room of course becomes the object. But when mechanical ventilation is installed interlocked with a gas leakage detector in the smallest room where the density limit is exceeded, the volume of the next small­est room becomes the object.
3. The minimum indoor floor space compared with the amount of refrigerant is roughly as follows: (When the ceiling is 8.8 ft. high)
Check of Density Limit
The room in which the air conditioner is to be installed requires a design that in the event of refrig­erant gas leaking out, its density will not exceed a set limit.
The refrigerant (R410A), which is used in the air condition­er, is safe, without the toxicity or combustibility of ammonia, and is not restricted by laws imposed to protect the ozone layer. However, since it contains more than air, it poses the risk of suffocation if its density should rise excessively. Suf­focation from leakage of refrigerant is almost non-existent. With the recent increase in the number of high density buildings, however, the installation of multi air conditioner systems is on the increase because of the need for effec­tive use of floor space, individual control, energy conserva­tion by curtailing heat and carrying power, etc. Most importantly, the multi air conditioner system is able to replenish a large amount of refrigerant compared to conventional individual air conditioners. If a single unit of the multi air conditioner system is to be installed in a small room, select a suitable model and installation pro­cedure so that if the refrigerant accidentally leaks out, its density does not reach the limit (and in the event of an emergency, measures can be made before injury can occur). In a room where the density may exceed the limit, create an opening with adjacent rooms, or install mechanical ventilation combined with a gas leak detection device. The density is as given below.
Total amount of refrigerant (lbs)
Min. volume of the indoor unit installed room (ft.3)
<
Density limit (oz/ft.3)
The density limit of refrigerant which is used in multi air condi­tioners is 0.3 oz/ft.
3
(ISO 5149).
1. If there are 2 or more refrigerating systems in a single refrigerating device, the amount of refrigerant should be as charged in each independent device.
For the amount of charge in this example:
The possible amount of leaked refrigerant gas in rooms A, B and C is 353 oz. The possible amount of leaked refrigerant gas in rooms D, E and F is 529 oz.
3
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 3
NOTE
Outdoor unit
Refrigerant tubing
Indoor unit
Refrigerant tubing
Outdoor unit
Very small room
Small room
Mechanical ventilation device – Gas leak detector
Medium room
Large room
Indoor unit
e.g., charged amount (353 oz)
Indoor unit
Outdoor unit
e.g., charged amount (529 oz)
Room A Room B Room C Room D Room E Room F
3
ft.
4000
3500
3000
Min. indoor volume
2500
2000
1500
1000
Range below the density limit of
0.3 oz/ft. (countermeasures not needed)
500
00
0
3
Range above the density limit of
0.3 oz/ft. (countermeasures needed)
400200 600 800 1000 1200
Total amount of refrigerant
3
454
398
341
284
227
170
114
57
oz
2
ft.
Min. indoor floor area
(when the ceiling is 8.8 ft. high)
Page 4
1-2. Prevent impurities including water, dust and oxide from entering the tubing. Impurities can cause R410A refriger-
ant deterioration and compressor defects. Due to the features of the refrigerant and refrigerating machine oil, the prevention of water and other impurities becomes more important than ever.
2. Be sure to recharge the refrigerant only in liquid form.
2-1. Since R410A is a non-azeotrope, recharging the refrigerant in gas form can lower performance and cause defects
in the unit.
2-2. Since refrigerant composition changes and performance decreases when gas leaks, collect the remaining refriger-
ant and recharge the required total amount of new refrigerant after fixing the leak.
3. Different tools required
3-1. Tool specifications have been changed due to the characteristics of R410A.
Some tools for R22- and R407C-type refrigerant systems cannot be used.
Material O
Copper tube
Outer diameter 1/4 (6.35) 3/8 (9.52) 1/2 (12.7) 5/8 (15.88) 3/4 (19.05)
Wall thickness 1/32 (0.8) 1/32 (0.8) 1/32 (0.8) 5/128 (1.0)
over 5/128 (1.0)
Material 1/ 2 H, H
Copper tube
Outer diameter 7/8 (22.22) 1 (25.4) 1-1/8 (28.58) 1-1/4 (31.75) 1-1/2 (38.1) 1-5/8 (41.28)
Wall thickness 5/128 (1.0) 5/128 (1.0) 5/128 (1.0) 3/64 (1.1)
over 3/64 (1.15)
over
3/64 (1.20)
Precautions for Installation Using New Refrigerant
1. Care regarding tubing
1-1. Process tubing
Material: Use C1220 phosphorous deoxidized copper specified in JIS H3300 “Copper and Copper Alloy Seamless
Pipes and Tubes.” For tubes of ø7/8" (ø22.22 mm) or larger, use C1220 T-1/2H material or H material, and do not bend the tubes.
Tubing size: Be sure to use the sizes indicated in the table below.
Use a tube cutter when cutting the tubing, and be sure to remove any flash. This also applies to distribution joints
(optional).
When bending tubing, use a bending radius that is 4 times the outer diameter of the tubing or larger.
* Using tools for R22 and R407C and new tools for R410A together can cause defects.
Use sufficient care in handling the tubing. Seal the tubing ends with caps or tape to prevent dirt, moisture, or other foreign substances from entering. These substances can result in system malfunction.
R407C tools
Item compatible Remarks
with R410A?
Manifold gauge Yes No Types of refrigerant, refrigerating machine
oil, and pressure gauge are different.
Charge hose Yes No To resist higher pressure, material must be changed.
Vacuum pump Yes Yes Use a conventional vacuum pump if it is equipped
with a check valve. If it has no check valve, purchase and attach a vacuum pump adapter.
Leak detector Yes No Leak detectors for CFC and HCFC that
react to chlorine do not function because R410A contains no chlorine. Leak detector for HFC134a can be used for R410A.
Flaring oil Yes No For systems that use R22, apply mineral oil (Suniso oil)
to the flare nuts on the tubing to prevent refrigerant leakage. For machines that use R407C or R410A, apply synthetic oil (ether oil) to the flare nuts.
Unit: in. (mm)
Unit: in. (mm)
4
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 4
CAUTION
New tool?
Manifold gauge
Vacuum pump
Outlet Inlet
Page 5
5
3-2. Use R410A exclusive cylinder only.
Single-outlet valve
(with siphon tube) Liquid refrigerant should be recharged with the cylinder standing on end as shown.
New refrigerant R410A cannot be used for earlier models
1. Compressor specifications are different.
If recharging a R22 or R407C compressor with R410A, durability will significantly decrease since some of the materials used for compressor parts are different.
2. Existing tubing cannot be used (especially R22).
Completely cleaning out residual refrigerating
machine oil is impossible, even by flushing.
3. Refrigerating machine oil differs (R22).
Since R22 refrigerating machine oil is mineral oil, it does not dissolve in R410A. Therefore, refrigerating machine oil discharged from the compressor can cause compressor damage.
R22 refrigerating machine oil Mineral oil (Suniso oil)
R407C refrigerating machine oil Synthetic fluid (ether oil)
R410A refrigerating machine oil Synthetic fluid (ether oil)
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 5
Valve
Liquid
R410A
Page 6
6
IMPORTANT! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Please Read Before Starting Check of Density Limit Precautions for Installation Using New Refrigerant New refrigerant R410A cannot be used for earlier models
1. GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1-1. Tools Required for Installation (not supplied) 1-2. Accessories Supplied 1-3. Type of Copper Tube and Insulation Material 1-4. Additional Materials Required for Installation 1-5. Tubing Length 1-6. Tubing Size 1-7. Straight Equivalent Length of Joints 1-8. Additional Refrigerant Charge 1-9. System Limitations 1-10. Check of Limit Density 1-11. Installing Distribution Joint 1-12. Optional Distribution Joint Kits 1-13. Example of Tubing Size Selection and
Refrigerant Charge Amount
2. SELECTING THE INSTALLATION SITE . . . . . 19
2-1. Indoor Unit 2-2. Outdoor Unit 2-3. Shield for Horizontal Exhaust Discharge 2-4. Installing the Outdoor Unit in Heavy Snow Areas 2-5. Precautions When Installing in Heavy Snow
Areas 2-6. Dimensions of Wind Ducting 2-7. Dimensions of Snow Ducting
3. HOW TO INSTALL THE INDOOR UNIT . . . . . 24
4-Way Air Discharge Semi-Concealed Type
(X Type)
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. Special Remarks
1-Way Air Discharge Semi-Concealed Type
(A Type)
3-8. Suspending the Indoor Unit 3-9. Placing the Unit Inside the Ceiling 3-10. Installing the Drain Piping 3-11. Checking the Drainage 3-12. Electrical Power Wiring 3-13. How to Install the Ceiling Panel
Concealed Duct Type (U Type)
3-14. Required Minimum Space for Installation and
Service 3-15. Suspending the Indoor Unit 3-16. Installing the Drain Piping 3-17. Checking the Drainage 3-18. Increasing the Fan Speed
Concealed Duct High-Static Pressure Type
(D Type)
3-19. Required Minimum Space for Installation and
Service 3-20. Suspending the Indoor Unit 3-21. Installing the Drain Piping 3-22. Caution for Ducting Work 3-23. Indoor Fan Performance
Ceiling-Mounted Type (T Type)
3-24. Required Minimum Space for Installation and
Service 3-25. Suspending the Indoor Unit 3-26. Duct for Fresh Air 3-27. Shaping the Tubing 3-28. Installing the Drain Piping
Wall-Mounted Type (K Type)
3-29. Removing the Rear Panel from the Unit 3-30. Selecting and Making a Hole 3-31. Installing the Rear Panel onto the Wall 3-32. Removing the Grille to Install the Indoor Unit 3-33. Preparing the Tubing 3-34. Shaping the Tubing 3-35. Installing the Drain Hose 3-36. When Using Wireless Remote Controller
Instead of Wired Remote Controller
4. HOW TO INSTALL THE OUTDOOR UNIT . . . 55
4-1. Transporting 4-2. Installing the Outdoor Unit 4-3. Routing the Tubing 4-4. Prepare the Tubing 4-5. Connect the Tubing
5. ELECTRICAL WIRING . . . . . . . . . . . . . . . . . . 59
5-1. General Precautions on Wiring 5-2. Recommended Wire Length and Wire
Diameter for Power Supply System 5-3. Wiring System Diagram
CONTENTS
Page Page
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 6
Page 7
7
6. HOW TO PROCESS TUBING . . . . . . . . . . . . 63
6-1. Connecting the Refrigerant Tubing 6-2. Connecting Tubing Between Indoor and
Outdoor Units 6-3. Insulating the Refrigerant Tubing 6-4. Taping the Tubes 6-5. Finishing the Installation
7. AIR PURGING . . . . . . . . . . . . . . . . . . . . . . . . . 67
Air Purging with a Vacuum Pump (for Test Run)
Preparation
8. TEST RUN . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
8-1. Preparing for Test Run 8-2. Test Run Procedure 8-3. Main Outdoor Unit PCB Setting 8-4. Auto Address Setting 8-5. Remote Controller Test Run Settings 8-6. Caution for Pump Down 8-7. Meaning of Alarm Messages
9. APPENDIX . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
9-1. 4-Way Air Discharge Semi-Concealed Type
(X Type) 9-2. 1-Way Air Discharge Semi-Concealed Type
(A Type) 9-3. Concealed Duct (High-Static Pressure) Type
(U, D Type) 9-4. Ceiling-Mounted Type (T Type) 9-5. Wall-Mounted Type (K Type)
Page
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 7
Page 8
8
Table 1-1 Outdoor Unit
1-2. Accessories Supplied
See Tables 1-1 – 1-7.
1-1. Tools Required for Installation (not supplied)
1. Standard screwdriver
2. Phillips head screwdriver
3. Knife or wire stripper
4. Tape measure
5. Carpenter’s level
6. Sabre saw or key hole saw
7. Hacksaw
8. Core bits
9. Hammer
10. Drill
11. Tube cutter
12. Tube flaring tool
13. Torque wrench
14. Adjustable wrench
15. Reamer (for deburring)
1-3. 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.
2. Foamed polyethylene insulation for copper tubes as
required to precise length of tubing. Wall thickness of the
insulation should be not less than 5/16 in.
3. Use insulated copper wire for field wiring. Wire size varies
with the total length of wiring.
Refer to
5. ELECTRICAL WIRING” for details.
1-4. Additional Materials Required for Installation
1. Refrigeration (armored) tape
2. Insulated staples or clamps for connecting wire
(See your local codes.)
3. Putty
4. Refrigeration tubing lubricant
5. Clamps or saddles to secure refrigerant tubing
6. Scale for weighing
Check local electrical codes and
regulations before obtaining
wire. Also, check any specified
instructions or limitations.
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 outdoor unit and make sure all accessory parts listed are with the system before beginning.
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 8
CAUTION
Part name
Connection tubing
Instruction manual paper
Outer diameter ø1-1/8"
Outer diameter ø7/8"
Figure
Inner diameter ø1"
Inner diameter ø3/4"
09053 Model
(10 hp)
0
Q’ty
14053 Model
(16 hp)
1
10
11
(hp = horse power)
Page 9
9
Table 1-2 (4-Way Air Discharge Semi-Concealed)
Table 1-3 (1-Way Air Discharge Semi-Concealed)
Table 1-4 (Concealed Duct)
Use 3/8" for suspending bolts.Field supply for suspending bolts and nuts.
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 9
Part Name Figure
Full-scale installation diagram
Drain hose
Hose band
Drain insulator
Flare insulator
Insulating tape
Packing
Wiring cover
Screw
Washer
Screw
Part Name Figure
Full-scale installation diagram
Drain hose
White (heat-resisting)
Q’ty
Printed on container box
1
For securing drain hose
1
For securing drain hose
1
For drain joint
1
For liquid tube
1
For gas tube
1
For gas tube joint
2
For drain joint
1
For covering erectrical wiring
1
For full-scale installation diagram
4
For suspending indoor unit from ceiling
8
For fixing the wiring cover
1
Q’ty
Printed on container box
1
For securing drain hose
1
Remarks
Remarks
Hose band
Drain insulator
Flare insulator
Insulating tape
Packing
Washer
Screw
Bushing
Part Name Figure
Drain hose
Hose band 1
Packing 1
Drain insulator 1
Flare insulator 1
Insulating tape
Flare insulator 1
White (heat-resisting)
White (heat-resisting)
For securing drain hose
1
For drain joint
1
For liquid tube
1
For gas tube
1
For gas tube joint
2
For drain joint
1
For suspending indoor unit from ceiling
8
For full-scale installation diagram
4
For electrical junction box
1
Q’ty
For securing drain hose
1
For securing drain hose
For drain joint
For drain joint
For liquid tube
For gas and liquid tubes flare nuts
2
For gas tube
Remarks
Washer
Sealing putty 1
Vinyl clamp 8
For suspending indoor unit from ceiling
8
For sealing recessed portion of power supply
For flare and drain insulators
Page 10
10
Table 1-5 (Concealed Duct High-Static Pressure)
Table 1-6 (Ceiling-Mounted)
Table 1-7 (Wall-Mounted)
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 10
Part Name Figure
Washer
Nut
Flare insulator
Drain socket
Part Name Figure
Full-scale installation diagram 1
Washer 4
Insulating tape 2
Vinyl clamp 8
Drain hose1
Hose band2
Drain insulator 1
T1/8"
T3/16"
White (heat-resisting)
L5-1/2"
Q’ty
For suspending indoor unit from ceiling
8
For suspending indoor unit from ceiling
8
Remarks
1 For gas tube
For liquid tube
1
For drain pipe connection
1
Q’ty
Remarks
Printed on container box
For temporarily suspending indoor unit from ceiling
2
For gas and liquid tube jointsFlare insulator
2
For gas and liquid tubes flare nuts
For flare and drain insulators
For main unit and PVC pipe joints
For drain hose connection
For drain hose joint
Gum eyelet 1
Part Name Figure
Tapping screw
Plastic cover
Insulator
5/32" × 1"
For power supply inlet
Q’ty
For fixing the rear panel
10
For improved tubing appearance
1
For insulating flare nut (2452 type only)
1
Remarks
Page 11
1-5. Tubing Length
Table 1-8 Ranges that Apply to Refrigerant Tubing Lengths and to Differences in Installation Heights
Select the installation location so that the length and size of refrigerant tubing are within the allowable range shown in the figure below.
1: The outdoor connection main tubing ( B portion) is determined by the total capacity of the outdoor units that are connected to
the tube ends.
2: If the longest tubing length (L1) exceeds 295 ft. (equivalent length), increase the sizes of the main tubes (LM) by 1 rank for gas
tubes and liquid tubes. (Use a field supply reducer.) (Select the tube size from the table of main tube sizes (Table 1-9) on the following page (LA table), and from the table of refrigerant tubing sizes (Table 1-14) on the second following page.)
3: If the longest main tube length (LM) exceeds 164 ft., increase the main tube size at the portion before 164 ft. by 1 rank for the
gas tubes. (Use a field supply reducer.) (For the portion that exceeds 164 ft., set based on the main tube sizes (LA) listed in the table on the following page.)
4: If the size of the existing tubing is already larger than the standard tubing size, it is not necessary to further increase the size.
* If the existing tubing is used, and the amount of on-site additional refrigerant charge exceeds the value listed below, then
change the size of the tubing to reduce the amount of refrigerant.
Max. additional charge for 1 outdoor unit: 62 lbs Max. additional charge for 2 outdoor units: 111lbs
11
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 11
1.
2. The outdoor connection main tubing ( B portion) is determined by the total capacity of the outdoor units that are connected to the tube ends.
3.
4.
H3
L5
B
Balance tubing (ø1/4
")
Explanation of symbols
Distribution joint (APR: purchased separately)
Ball valve (field supply)
T- j o i nt (field supply)
Solidly welded shut (pinch weld)
Main tu
bing length LM = LA + LB … 262 ft
Main distribution tubes LC – LG are selected according to the capacity after the distribution joint.
Sizes of indoor unit connection tubing 1 – 40 are determined by the connection tubing sizes on the indoor units.
L1
L2
LM
A
LA
LB LC
LE
Max. 1.3 ft
Max. 1.3 ft
LF
L4
For extension
LD L3
5
2
For extension
4
LG
1
40
38
39
H1
R410A distribution joint APR-CHP680BA (for outdoor unit)
H2
APR-CHP1350BA (for outdoor unit) APR-P160BA (for indoor unit)
3
APR-P680BA (for indoor unit) APR-P1350BA (for indoor unit)
Note: Do not use commercially available T-joints for the liquid tubing and parts. * Be sure to use special R410A distribution joints (APR: purchased separately) for outdoor unit connections and tubing branches.
Item Mark Contents Length (ft.)
L1 Max. tubing length
L (L2 – L4)
Allowable tubing length
LM Max. length of main tubing (at max. diameter) 262
40
, 2...
112
+
L1+
...
A
+LE+LF+LG
L5
Allowable elevation difference
H1
H2
Difference between max. length and min. length from the No.1 distribution joint
Max. length of each distribution tube 98
39
+
Total max. tubing length including length of each distribution tube (only liquid tubing)
Distance between outdoor units
When outdoor unit is installed higher than indoor unit 164 When outdoor unit is installed lower than indoor unit 131 Max. difference between indoor
Actual length 492
Equivalent length 574
units 49
H3 Max. difference between outdoor units
Allowable length of joint tubing
L = Length, H = Height
L3
T-joint tubing (field-supply); Max. tubing length between the first T-joint and solidly welded-shut end point
NOTE
>
>
>
>
>
>
>
>
>
>
>
>
131
*3
984
32
13
6.6
Page 12
12
1-6. Tubing Size
Table 1-9 Main Tubing Size (LA)
*1: If future extension is planned, select the tubing diameter based on the total horsepower after extension.
However extension is not possible if the resulting tubing size is two ranks higher. *2: The balance tube (outdoor unit tube) diameter is ø1/4". *3: Type 1 tubing should be used for the refrigerant tubes. *4: If the length of the longest tube (L1) exceeds 295 ft. (equivalent length), increase the main tube (LM) size by 1 rank for the gas
and liquid tubes. (Use field-supply reducers.) (Select from Table 1-9 and Table 1-14.) *5: If the longest main tube length (LM) exceeds 164 ft., increase the main tube size at the portion before 164 ft. by 1 rank for the
gas tubes.
(For the portion that exceeds 164 ft., set based on the main tube sizes (LA) listed in the table above.)
Size of tubing (LO) between outdoor units
Select the size of tubing between outdoor units based on the main tubing size (LA) as given in the table above.
Note: In case the total capacity of connected indoor units exceeds the total capacity of the outdoor units, select the main tubing
size for the total capacity of the outdoor units. (Especially the main tubing segments of LA, LB and LF.)
Table 1-11 Outdoor Unit Tubing Connection Size
Table 1-12 Indoor Unit Tubing Connection Size
Note: Use C1220T-1/2H material for tubing over ø3/4" (ø22.22).
Table 1-10 Main Tubing Size After Distribution (LB, LC...)
Unit: in. (mm)
Unit: in. (mm)
Unit: in. (mm)
Unit: in. (mm)
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 12
BTU/h
(kW)
Total system horsepower
Combined outdoor units
Gas tubing
Liquid tubing
95,500
(28.0)
10
ø7/8"
(ø22.22)
ø3/8"
(ø9.52)
153,600
(45.0)
16
1610
ø1-1/8"
(ø28.58)
ø1/2"
(ø12.7)
191,100
(56.0)
20
10 10
ø5/8"
(ø15.88)
249,100
(73.0)
26
16 10
31.75)
(ø19.05)
307,100
(90.0)
32
16 16
ø1-1/4"
ø3/4"
Total capacity after distribution
Below BTU/h
Over BTU/h
24,200
(2.5 hp)
Gas tubing
Tubing size
Liquid tubing
ø1/2"
(ø12.7)
ø3/8"
(ø9.52)
54,600
(6 hp)
24,200
(2.5 hp)
ø5/8"
(ø15.88)
ø3/8"
(ø9.52)
76,800
(8.1 hp)
54,600
(6 hp)
ø3/4"
(ø19.05)
ø3/8"
(ø9.52)
102,400
(11 hp)
76,800
(8.1 hp)
ø7/8"
(ø22.22)
ø3/8"
(ø9.52)
143,300
(15 hp)
102,400
(11 hp)
ø1"
(ø25.4)
ø1/2"
(ø12.7)
178,800
(19 hp)
143,300
(15 hp)
ø1-1/8"
(ø28.58)
ø1/2"
(ø12.7)
238,900
(25 hp)
178,800
(19 hp)
ø1-1/8"
(ø28.58)
ø5/8"
(ø15.88)
hp = horsepower
334,400
(35 hp)
238,900
(25 hp)
ø1-1/4"
31.75)
ø3/4"
(ø19.05)
334,400
(35 hp)
ø1-1/2" (ø38.1)
ø3/4"
(ø19.05)
( A C)
BTU/h
(kW)
Gas tubing
Liquid tubing
Balance tubing
Indoor unit type7 9 12 18 24 3648
Gas tubing
Liquid tubing
95,500
(28.0)
ø7/8"
(ø22.22)
Brazing connection
ø3/8" (ø9.52)
Flare connection
ø1/4" (ø6.35)
Flare connection
ø1/2" (ø12.7)
153,600
(45.0)
ø1-1/8"
(ø28.58)
ø1/2" (ø12.7)
Balance tube
Liquid tube
ø5/8" (ø15.88)
ø3/8" (ø9.52)ø1/4" (ø6.35)
Gas tube
Page 13
13
Table 1-16 Refrigerant Charge Amount at Shipment (for outdoor unit)
DC
CHDX09053 CHDX14053
(oz)
423 458
1-9. System Limitations
Table 1-17 System Limitations
Max. No. allowable connected outdoor units 2 *1
Max. capacity allowable connected outdoor units 307,100 BTU/h (32 hp, 90 kW)
Max. connectable indoor units 40
Max. allowable indoor/outdoor capacity ratio 50 – 130 %
*1: Up to 2 units can be connected if the system has been extended.
1-7. Straight Equivalent Length of Joints
Design the tubing system by referring to the following table for the straight equivalent length of joints.
Table 1-13 Straight Equivalent Length of Joints
Table 1-14 Refrigerant tubing (Existing tubing can be used.)
Tubing size (in. (mm))
Material O Material 1/2H • H
ø1/4" (ø6.35) t1/32" (0.8) ø7/8" (ø22.22) t5/128" (1.0)
ø3/8" (ø9.52) t1/32" (0.8) ø1" (ø25.40) t5/128" (1.0)
ø1/2" (ø12.7) t1/32" (0.8) ø1-1/8" (ø28.58) t5/128" (1.0)
ø5/8" (ø15.88) t5/128" (1.0) ø1-1/4" (ø31.75) t3/64" (1.1)
ø3/4" (ø19.05) over t5/128" (1.0) ø1-1/2" (ø38.10) over t3/64" (1.15)
ø1-5/8" (ø41.28) over t3/64" (1.20)
* When bending the tubes, use a bending
radius that is at least 4 times the outer
diameter of the tubes.
In addition, take sufficient care to avoid
crushing or damaging the tubes when
bending them.
1-8. Additional Refrigerant Charge
Additional refrigerant charge amount is calculated from the liquid tubing total length as follows.
Table 1-15 Amount of Refrigerant Charge Per Meter, According to Liquid Tubing Size
Liquid tubing size Amount of refrigerant
(in. (mm)) charge (oz/ft.)
ø1/4" (ø6.35) 0.279
ø3/8" (ø9.52) 0.602
ø1/2" (ø12.7) 1.38
ø5/8" (ø15.88) 1.99
ø3/4" (ø19.05) 2.78
ø7/8" (ø22.22) 3.93
Required amount of charge = (Amount of refrigerant charge per meter of each size of liquid tube × its tube length) + (...) + (...)
* Always charge accurately using a scale for weighing.
* If the existing tubing is used, and the amount of on-site additional
refrigerant charge exceeds the value listed below, then change the
size of the tubing to reduce the amount of refrigerant.
Max. additional charge for 1 outdoor unit : 62 lbs
Max. additional charge for 2 outdoor units :111 lbs
Max. additional charge for 3 outdoor units :133 lbs
Unit: ft.
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 13
Gas tubing size (in. (mm))
90° elbow
45° elbow 0.8 0.9 1 1.2 1.3 1.4 1.7 1.9
1/2"
(12.7)
5/8"
(15.88)
1 1.1 1.4 1.6 1.7 1.9 2.3 2.6
3/4"
(19.05)
7/8"
(22.22)1"(25.4)
U-shape tube bent (R2-3/8" – 4" (60 – 100)) 33.4 4.1 4.7 5.1 5.6 6.9 7.8
Tra p b end
Y-branch distribution jointEquivalent length conversion not n
Ball valve for service Equivalent length conversion not needed.
7.5 9.2 10.5 12.5 14.1 15.4 16.4 14.0
1-1/8"
(28.58)
eeded.
1-1/4" (31.8)
1-1/2"
(38.1)
Page 14
Always check the gas density limit for the room in which the unit is installed.
1-10. Check of Limit Density
When installing an air conditioner in a room, it is necessary to ensure that even if the refrigerant gas accidentally leaks out, its density does not exceed the limit level for that room. If the density could exceed the limit level, it is necessary to provide an opening between the unit and the adjacent room, or to install mechanical ventilation which is interlocked with a leak detector.
(Total refrigerant charged amount: oz)
(Min. indoor volume where the indoor unit is installed: ft.3)
< Limit density 0.3 (oz/ft.
3
)
The limit density of refrigerant R410A which is used in this unit is
0.3 oz/ft.
3
(ISO 5149).
The shipped outdoor unit comes charged with the amount of refrig­erant fixed for each type, so add it to the amount that is charged in the field. (For the refrigerant charge amount at shipment, refer to the unit’s nameplate.)
Minimum indoor volume & floor area as against the amount of refrigerant is roughly as given in the following table.
Pay special attention to any location, such as a basement, etc., where leak­ing refrigerant can accumulate, since refrigerant gas is heavier than air.
1-11. Installing Distribution Joint
(1) Refer to “HOW TO ATTACH DISTRIBUTION JOINT” enclosed
with the optional distribution joint kit
(APR-CHP680BA, APR-CHP1350BA, APR-P160BA,
APR-P680BA, APR-P1350BA).
(2) When creating a branch using a commercially available
T-joint (header joint system), orient the main tubing so that it is
either horizontal (level) or vertical. In order to prevent accumu-
lation of refrigerant oil in stopped units, if the main tubing is
horizontal then each branch tubing length should be at an
angle that is greater than horizontal. If the main tubing is verti-
cal, provide a raised starting portion for each branch.
(3) If there are height differences between indoor units or if branch
tubing that follows a distribution joint is connected to only 1
unit, a trap or ball valve must be added to that
distribution joint. (When adding the ball valve, locate it
within 1.3 ft. of the distribution joint.)
If a trap or ball valve is not added, do not operate the sys-
tem before repairs to a malfunctioning unit are
completed. (The refrigerant oil sent through the tubing to
the malfunctioning unit will accumulate and may damage
the compressor.)
14
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 14
WARNING
CAUTION
3
ft.
10000
9500 9000
8500 8000
7500 7000
Min. indoor volume
6500 6000 5500 5000 4500 4000
3500 3000
2500 2000 1500 1000
Range below the density limit of
0.3 oz/ft. (countermeasures not needed)
500
00
0
3
Range above the density limit of
0.3 oz/ft. (countermeasures needed)
1000500 1500 2000 2500 3000
Total amount of refrigerant
3
Tube branching methods (horizontal use)
15 to 30°
B
Horizontal
A
B
Ty pe s of vertical trap specifications
(When using ball valve)
Main tubing
line
Arrow view
A
View as seen from arrow
ft.
1136 1079 1022 966 909 852 795 738 682 625 568 511 454
398 341
284 227 170 114 57
oz
2
Min. indoor floor area
(when the ceiling is 8.8 ft. high)
Ball valve
(BV: purchased
separately)
Indoor unit (1)
(When not using ball valve)
Main tubing
Indoor unit is directed downward
Indoor unit (more than 2 units)
Branch tubing is directed upward.
More than 8 inch
(If only 1 unit is connected, a ball valve is also needed on this side.)
Horizontal
Indoor unit
(Each unit is connected to tubing that is either level or is directed downward.)
Page 15
15
1-12. Optional Distribution Joint Kits
See the installation instructions packaged with the distribution joint kit for the installation procedure.
Table 1-18
1. APR-CHP680BA For outdoor unit (Capacity after distribution joint is 232,000 BTU/h (68.0 kW) or less.)
Table 1-19 Size of connection point on each part (Shown are inside diameters of tubing)
2. APR-CHP1350BA For outdoor unit (Capacity after distribution joint is greater than 232,000 BTU/h (68.0 kW) and no more than
Table 1-20 Size of connection point on each part (Shown are inside diameters of tubing)
Model name Cooling capacity after distribution Remarks
1. APR-CHP680BA 232,000 BTU/h (68.0 kW) or less For outdoor unit
2. APR-CHP1350BA 460,700 BTU/h (135.0 kW) or less For outdoor unit
3. APR-P160BA 76,400 BTU/h (22.4 kW) or less For indoor unit
4. APR-P680BA 232,000 BTU/h (68.0 kW) or less For indoor unit
5. APR-P1350BA 460,700 BTU/h (135.0 kW) or less For indoor unit
Tubing size (with thermal insulation)
Unit: in.
Example:
Example:
Unit: in.
Size Part A Part B Part C Part D Part E Part F Part G Part H Part I
in. (mm)
ø1-1/2" ø1-1/4" ø1-1/8" ø1" ø7/8" ø3/4" ø5/8" ø1/2" ø3/8" (ø38.1) (ø31.75) (ø28.58) (ø25.4) (ø22.22) (ø19.05) (ø15.88) (ø12.7) (ø9.52)
Size Part A Part B Part C Part D Part E Part F Part G Part H Part I
in. (mm)
ø1-1/2" ø1-1/4" ø1-1/8" ø1" ø7/8" ø3/4" ø5/8" ø1/2" ø3/8"
(ø38.1) (ø31.75) (ø28.58) (ø25.4) (ø22.22) (ø19.05) (ø15.88) (ø12.7) (ø9.52)
460,700 BTU/h (135.0 kW).)
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 15
B
D
Distribution Joint
Reducing Joints
Gas tubing Liquid tubing
6-59/64
5-5/16
C
CDEF
C
Insulation
4-31/64
F
EF
HI
Distribution Joint
Insulation
4-21/64
3-13/16
G
HFI
G
G
H
I
Reducing Joints
2-53/64
Gas tubing Liquid tubing
A
Insulation
6-57/64
5-5/16
B
Distribution Joint
B
B
C D
A
C
D
E
F
Reducing Joints
4-31/64
F
EF
HI
Distribution Joint
Insulation
4-21/64
3-13/16
G
G
G
H
I
HFI
2-53/64
Reducing Joints
Page 16
16
3. APR-P160BA
Use: For indoor unit (Capacity after distribution joint is 76,400 BTU/h (22.4 kW) or less.)
Table 1-21 Size of connection point on each part (Shown are inside diameters of tubing)
4. APR-P680BA
Use: For indoor unit (Capacity after distribution joint is greater than 76,400 BTU/h (22.4 kW) and no more than
Table 1-22 Size of connection point on each part (Shown are inside diameters of tubing)
5. APR-P1350BA
Use: For indoor unit (Capacity after distribution joint is greater than 232,000 BTU/h (68.0 kW) and no more than
Table 1-23 Size of connection point on each part (Shown are inside diameters of tubing)
Example:
Example:
Example:
Size Part A Part B Part C Part D Part E Part F Part G Part H Part I Part J
in. (mm)
ø1-1/2" ø1-1/4" ø1-1/8" ø1" ø7/8" ø3/4" ø5/8" ø1/2" ø3/8" ø1/4" (ø38.1) (ø31.75) (ø28.58) (ø25.4) (ø22.22) (ø19.05) (ø15.88) (ø12.7) (ø9.52) (ø6.35)
Size Part A Part B Part C Part D Part E Part F Part G Part H
in. (mm)
ø1-1/8" ø1" ø7/8" ø3/4" ø5/8" ø1/2" ø3/8" ø1/4"
(ø28.58) (ø25.4) (ø22.22) (ø19.05) (ø15.88) (ø12.7) (ø9.52) (ø6.35)
Size Part A Part B Part C Part D Part E
in. (mm)
ø3/4" ø5/8" ø1/2" ø3/8" ø1/4"
(ø19.05) (ø15.88) (ø12.7) (ø9.52) (ø6.35)
Unit: in.
Unit: in.
Unit: in.
232,000 BTU/h (68.0 kW).)
460,700 BTU/h (135.0 kW).)
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 16
Gas tubing Liquid tubing
4-21/64
A
Insulation
3-13/16
B
Distribution Joint
B
B
B
A
2-53/64
C
D
Insulation
4-21/64
3-13/16
C
Distribution Joint
C
C
D E
DE
2-53/64
DCB
Distribution Joint
Insulation
A
Distribution
CD
Joint
Insulation
Gas tubing Liquid tubing
6-57/64
5-5/16
A
Gas tubing Liquid tubing
6-57/64
5-5/16
B
A
A
B C
D
E F
B
B
C D
E F
G H
BCD
Reducing Joints
Reducing Joints
EF
A
CD
4-31/64
4-31/64
FG
Distribution Joint
Insulation
F
Distribution Joint
Insulation
4-21/64
3-13/16
E
E
F G H
4-21/64
3-13/16
G
G
H
I
J
E
G
FGH
Reducing Joints
F
H
Reducing Joints
2-53/64
2-53/64
Page 17
17
1-13. Example of Tubing Size Selection and Refrigerant Charge Amount
Additional refrigerant charging
Based on the values in Tables 1-9, 10, 11, 12 and 15, use the liquid tubing size and length, and calculate the amount of additional
refrigerant charge using the formula below.
= 3.93 × (a) + 2.78 × (b) + 1.99 × (c) + 1.38 × (d) + 0.602 × (e) + 0.279 × (f)
(a) : Liquid tubing Total length of ø7/8" (ft.) (d) : Liquid tubing Total length of ø1/2" (ft.)
(b) : Liquid tubing Total length of ø3/4" (ft.) (e) : Liquid tubing Total length of ø3/8" (ft.)
(c) : Liquid tubing Total length of ø5/8" (ft.) ( f ) : Liquid tubing Total length of ø1/4" (ft.)
Charging procedure
Be sure to charge with R410A refrigerant in liquid form.
1. After performing a vacuum, charge with refrigerant from the liquid tubing side. At this time, all valves must be in the “fully
closed” position.
2. If it was not possible to charge the designated amount, operate the system in Cooling mode while charging with refrigerant
from the gas tubing side. (This is performed at the time of the test run. For this, all valves must be in the “fully open” position.
However if only one outdoor unit is installed, a balance tube is not used. Therefore, leave the valves fully closed.)
Charge with R410A refrigerant in liquid form.
With R410A refrigerant, charge while adjusting the amount being fed a little at a time in order to prevent liquid refrigerant from
backing up.
After charging is completed, turn all valves to the “fully open” position.
Replace the tubing covers as they were before.
Required additional refrigerant charge (oz)
1. R410A additional charging absolutely must be done through liquid charging.
2. The R410A refrigerant cylinder has a gray base color, and the top part is pink.
3. The R410A refrigerant cylinder includes a siphon tube. Check that the siphon tube is present. (This is indicated on the label at the top of the cylinder.)
4. Due to differences in the refrigerant, pres­sure, and refrigerant oil involved in installa­tion, it is not possible in some cases to use the same tools for R22 and for R410A.
Example:
Example of each tubing length
Main tubing Distribution joint tubing
LA = 131 ft. Outdoor side Indoor side LB = 16 ft. A = 7 ft. 1 = 98 ft. LC = 16 ft. B = 7 ft. 2 = 16 ft.
3 = 16 ft. 4 = 65 ft.
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 17
CAUTION
Balance tube
Use a flathead screwdriver and open by turning the part with the screw groove to the right, from “–” to “|”.
Outdoor unit
09053 model
09053 model
B
A
LA
LB
1 2 3 4
LC
Liquid tube
Use a hex wrench (width 5/32 inch) and turn to the left to open.
Gas tube Use a flathead screwdriver and
open by turning the part with the screw groove to the right, from “–” to “|”.
48 model 48 model 48 model
36 model
Page 18
18
Checking of limit density
Density limit is determined on the basis of the size of a room
using an indoor unit of minimum capacity. For instance, when
an indoor unit is used in a room (floor area 161 ft.
2
× ceiling
height 8.8 ft. = room volume 1417 ft.
3
), the graph at right
shows that the minimum room volume should be 2455 ft.
3
(floor area 279 ft.2) for refrigerant of 418 oz.
<Determination by calculation>
Overall refrigerant charge amount for the air conditioner: oz
(Minimum room volume for indoor unit: ft.3)
=
418 (oz)
= 0.29 (oz/ft.
3
) < 0.3 (oz/ft.3)
1417 (ft.
3
)
Therefore, openings such as louvers are not required for this
room.
Obtain liquid tubing size from Tables 1-9, 10, 11, 12 and 15.
Main tubing
LA = ø5/8 (ft.) (Total capacity of indoor unit is 179,400 BTU/h) The longest tubing length in this example
LB = ø1/2 (ft.) (Total capacity of indoor unit is 131,600 BTU/h) (LA = 131 ft.)
LC = ø3/8 (ft.) (Total capacity of indoor unit is 83,800 BTU/h)
Distribution joint tubing
Outdoor side A: ø3/8 (ft.) B: ø3/8 (ft.) (from outdoor unit connection tubing)
Indoor side 1: ø3/8 (ft.) 2: ø3/8 (ft.) 3: ø3/8 (ft.) 4: ø3/8 (ft.) (from indoor unit connection tubing)
Obtain charge amount for each tubing size
Note that the charge amounts per 1 meter are different for each liquid tubing size. ø5/8 (ft.) LA : 131 ft. × 1.99 oz/ft. = 261 oz ø1/2 (ft.) LB : 16 ft. × 1.38 oz/ft. = 22 oz ø3/8 (ft.) LC + A – B + 1 – 4 : 225 ft. × 0.602 oz/ft. = 135 oz
Total 418 oz
Additional refrigerant charge amount is 418 oz.
Be sure to check the limit density for
the room in which the indoor unit is
installed.
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 18
CAUTION
3
ft.
4000
Range below the density limit of
0.3 oz/ft. (countermeasures not needed)
500
00
0
3
Range above the density limit of
0.3 oz/ft. (countermeasures needed)
400200 600 800 1000 1200
Total amount of refrigerant
3
Min. indoor volume
3500
3000
2500
2000
1500
1000
454
398
341
284
227
170
114
57
oz
2
ft.
Min. indoor floor area
(when the ceiling is 8.8 ft. high)
Page 19
2. SELECTING THE INSTALLATION SITE
2-1. Indoor Unit
AVOID:
areas where leakage of flammable gas may be expected.
places where large amounts of oil mist exist.
direct sunlight.
locations near heat sources which may affect the
performance of the unit.
locations where external air may enter the room directly.
This may cause “sweating” on the air discharge ports,
causing them to spray or drip.
locations where the remote controller will be splashed with
water or affected by dampness or humidity.
installing the remote controller behind curtains or furniture.
locations where high-frequency emissions are generated.
DO:
select an appropriate position from which every corner of
the room can be uniformly cooled.
select a location where the ceiling is strong enough to
support the weight of the unit.
select a location where tubing and drain pipe have the
shortest run to the outdoor unit.
allow room for operation and maintenance as well as
unrestricted air flow around the unit.
install the unit within the maximum elevation difference
above or below the outdoor unit and within a total tubing
length (L) from the outdoor unit as detailed in Table 1-8.
allow room for mounting the remote controller about 3 ft.
off the floor, in an area that is not in direct sunlight nor in
the flow of cool air from the indoor unit.
Air delivery will be degraded if the distance from the floor to
the ceiling is greater than 10 ft.
Fig. 2-1
Fig. 2-2
Fig. 2-3
Fig. 2-4
19
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 19
Ceiling-Mounted Type
Ceiling
Wall
min. 10 in.
Front view
min. 10 in.
NOTE
The rear of the indoor unit can be installed flush against the wall.
Air discharge
min. 2 ft.
Side view
Air intake
Max. 10 in.
Obstacle
Concealed Duct (High-Static Pressure) Type 4-Way Air Discharge Semi-Concealed Type
3 ft.
3 ft.
3 ft.
3 ft.
3 ft.
NOTE
1-Way Air Discharge Semi-Concealed Type
Ceiling
min. 2 in.
Air discharge
min. 3 ft.
Obstacle
Air intake
min. 2 in.
Wall
Wall
Side view
Wall-Mounted Type
min. 6 in.
min.6 in.
min. 6 in.
Front View
Page 20
20
Fig. 2-5
Fig. 2-6
Fig. 2-7
2-2. Outdoor Unit
AVOID:
heat sources, exhaust fans, etc.
damp, humid or uneven locations
indoors (no-ventilation location)
DO:
choose a place as cool as possible.
choose a place that is well ventilated.
allow enough room around the unit for air intake/
exhaust and possible maintenance.
Installation Space
Install the outdoor unit where there is enough space for ven-
tilation. Otherwise the unit may not operate properly. Fig. 2-6
shows the minimum space requirement around the outdoor
units when 3 sides are open and only 1 side is shuttered,
with open space above the unit. The mounting base should
be concrete or a similar material that allows for adequate
drainage. Make provisions for anchor bolts, platform height,
and other site-specific installation requirements.
Leave space open above the
unit.
Construct louvers or other
openings in the wall, if nec­essary, to ensure adequate ventilation.
Do not do any wiring or tubing within 1 ft. of the front
panel, because this space is needed as a servicing
space for the compressor.
Ensure a base height of 4 in. or more to ensure that
drainage water does not accumulate and freeze
around the bottom of the unit.
If installing a drain pan, install the drain pan prior to
installing the outdoor unit.
* Make sure there is at least 6 in. between the outdoor
unit and the ground.
Also, the direction of the tubing and electrical wiring
should be from the front of the outdoor unit.
Unit: in.
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 20
Exhaust fan
Hot air
Heat
Out­door unit
source
Example of installation of 2 units
(When wall height is below 6 ft.)
* More than 4 in.
* More than 4 in.
CAUTION
NOTE
More than 2 in.
* More than 4 in.
* However, be sure to ensure a space of 1 ft. or more at
either the right side or the rear of the unit.
74-1/64 (Ceiling panel dimensions)
35-3/64 (Ceiling panel dimensions) 35-3/64 (Ceiling panel dimensions)
3-15/16
31-7/64 (Installation hole pitch) 31-7/64 (Installation hole pitch)
70-5/64 (Installation hole pitch)
7-7/8
Top view
More than
1.7 ft.
35-3/64 (Ceiling panel dimensions)
36-7/32 (Installation hole pitch)
37-13/32 (Maximum dimensions)
Page 21
2-3. Shield for Horizontal Exhaust Discharge
It is necessary to install an air-discharge chamber (field
supply) to direct exhaust from the fan horizontally if it is diffi-
cult to provide a minimum space of 7 ft. between the air-dis-
charge outlet and a nearby obstacle. (Fig. 2-8)
In regions with heavy snowfall,
the outdoor unit should be
provided with a solid, raised plat-
form and snow-proof ducting
(field supply). (Fig. 2-9)
2-4. Installing the Outdoor Unit in Heavy Snow
Areas
In locations where wind-blown snow can be a problem,
snow-proof ducting (field supply) should be fitted to the unit
and direct exposure to the wind should be avoided as much
as possible. (Fig. 2-10) The following problems may occur if
proper countermeasures are not taken:
The fan in the outdoor unit may stop running, causing the
unit to be damaged.
There may be no air flow.
The tubing may freeze and burst.
The condenser pressure may drop because of strong
wind, and the indoor unit may freeze.
2-5. Precautions When Installing in Heavy Snow
Areas
a) The platform should be higher than the maximum snow
depth. (Fig. 2-9)
b) The 2 anchoring feet of the outdoor unit should be used
for the platform, and the platform should be installed
beneath the air-intake side of the outdoor unit.
c) The platform foundation must be solid and the unit must
be secured with anchor bolts.
d) When installing on a roof subject to strong wind, coun-
termeasures must be taken to prevent the unit from
being overturned.
Fig. 2-8
Fig. 2-9
Fig. 2-10
21
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 21
CAUTION
DO
AVOID
Without snow­proof ducting
(Without platform)
With snow­proof ducting
(High platform)
Fall en snow
Page 22
2-6. Dimensions of Wind Ducting
Reference diagram for air-discharge chamber (field supply)
2-unit installation
22
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 22
unit: in.
Ceiling panel
33-3/16 35-3/64
(Ceiling panel dimensions)
35-15/64
(Maximum bracket dimensions)
Air direction: Front direction Air direction: Right direction
35-3/64
2-11/64 15/16
97-29/32
(Ceiling panel dimensions)
65-53/64 (32-5/64)
35-3/64
(Ceiling panel dimensions)
2-11/6415/16
33-3/16
35-3/64
97-29/32
65-53/64 (32-5/64)
35-15/64
(Ceiling panel dimensions)
Ceiling panel
(Maximum bracket dimensions)
Front view Front viewRight side view Right side view
Note: Can be installed so that the air direction is to the front, right, left or rear direction.
74-7/32
(2-unit installation: maximum dimensions)
5-25/32
33-3/16
31-7/64
33-3/16
31-7/64
(Installation hole pitch)
Top view
unit: in.
36-7/32
7-7/8
(Installation hole pitch)
2-11/64 15/16
97-29/32
35-3/64
(Ceiling panel dimensions)
65-53/64 (32-5/64)
Front view Right side view
Page 23
g
2-7. Dimensions of Snow Ducting
Reference diagram for snow-proof ducting (field supply)
2-unit installation
23
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 23
31-17/32
Air direction: Front direction
Ceiling panel
53-55/64
31-17/32
31-17/32
31-17/32 (Air intake duct)
9-13/32
45-5/16
(Ceiling panel dimensions)
36-7/64
35-3/64
53-55/64
33-3/16 (Air outlet duct)
9-13/32
1 pc.
4 pc.
9-13/32
(Ceiling panel dimensions)
(32-5/64)
97-29/32
65-53/64
31-17/32 53-55/64
45-5/16
9-13/32
(Ceiling panel dimensions)
35-3/64
35-3/64
32-7/832-7/8
9-13/32
15/16 15/16
36-7/64
9-13/32
Air direction: Right direction
Ceiling panel
35-3/64
53-55/64
9-13/32 9-13/32
unit: in.
33-3/16 (Air outlet duct)
31-17/32 (Air intake duct)
Front view
Note: Can be installed so that the air direction is to the front, right, left or rear direction.
Installation hole pitch
31-17/32
74-1/64 (Ceiling panel dimensions)
35-3/64
31-7/64
7-7/8
223
3
2
11
3
2
Right side view
35-3/64
3-15/16
31-7/64
70-5/64
2
Ceiling panel dimensions
Top (Before installation of snowfall protection duct)
36-7/32
35-3/64
37-13/32
Installation hole pitchInstallation hole pitch
31-17/32
Ceiling panel
2
Front view
35-3/64
9-29/64 9-29/64
(Ceiling panel dimensions)
7/82-11/64
1
2
Right side view
unit: in.
45-5/16
36-7/64
92-53/64
Front view
97-29/32
65-53/64
ht side view
Ri
36-7/64
45-5/16
36-7/64
45-5/16
Page 24
24
X
3. HOW TO INSTALL THE INDOOR UNIT
4-Way Air Discharge Semi-Concealed Type (X Type)
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
(1) Fix the suspension bolts securely in the ceiling using the method
shown in the diagrams (Figs. 3-1 and 3-2), by attaching them to the ceiling support structure, or by any other method that ensures that the unit will be securely and safely suspended.
(2) Follow Fig. 3-2 and Table 3-1 to make the holes in the ceiling.
Table 3-1
Unit: in. (mm)
(3) Determine the pitch of the suspension bolts using the supplied
full-scale installation diagram. The diagram and table (Fig. 3-3 and Table 3-2) show the relationship between the positions of the suspension fitting, unit, and panel.
Table 3-2
Fig. 3-1
Fig. 3-2
Note: For DC Fan Tap Change Procedure
for 4-Way Cassette, see page 30.
Fig. 3-4
3-3. Placing the Unit Inside the Ceiling
(1) When placing the unit inside the ceiling, determine
the pitch of the suspension bolts using the supplied full-scale installation diagram. (Fig. 3-4) 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.
Unit: in. (mm)
Unit: in. (mm)
Unit: in. (mm)
Fig. 3-3
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 24
-in-anchor
-in-plug
Concrete Insert
Type
Length
12, 18, 24, 36
ABCD
31-1/32
(788)
28-15/32
(723)
34-27/32
(885)
34-27/32
(885)
Type
Length
12, 18, 24
36
ABCD
4-29/64
(113)
4-29/64
(113)
6-13/16
(173)
6-13/16
(173)
10-5/64
(256)
12-9/16
(319)
8-17/64
(210)
8-17/64
(210)
E
3-15/32
(88)
3-15/32
(88)
Drain outlet(other side)
(VP25)
Refregerant tubing joint(liquid side) Refregerant tubing joint(gas side)
Suspension bolt (M10 or 3/8") (field supply)
A (suspension bolt pitch)
C (ceiling opening dimension)
B (suspension bolt pitch)
Suspension lug
D
E
Over 19/32 (15)
Supplied bolt
Powe r supply outlet
Inter-unit control wiring
Full-scale installation diagram (printed on top of container box)
C
B
A
1-3/8 (35)
15/32 – 43/64
(12 – 17)
Page 25
X
Fig. 3-5
(2) 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 in. as shown in Fig. 3-5.
(3) Thread the 3 hexagonal nuts and 2 washers (field
supply) onto each of the 4 suspension bolts as shown in Fig. 3-5. 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.
(4) Adjust so that the distance between the unit and the
ceiling bottom is 15/32 to 43/64 in. Tighten the nuts on the upper side and lower side of the suspension lug.
(5) Remove the protective polyethylene used to protect
the fan parts during transport.
3-4. Installing the Drain Piping
(1) Prepare a standard hard PVC pipe (O.D. 1-1/4 in.) for
the drain and use the supplied drain hose and hose band to prevent water leaks. The PVC pipe must be purchased separately. The unit’s transparent drain port allows you to check drainage. (Fig. 3-6)
Insert the drain pipe until it contacts the socket, as
shown in Fig. 3-6, then secure it tightly with the hose band.
Do not use adhesive when connecting the supplied
hose.
Reasons: 1. 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.
2. The pipe cannot be removed when maintenance is needed.
Do not bend the supplied drain hose 90° or more.
The hose may slip off.
Align the hose bands with the end of the hose.
Tighten the hose band firmly. Please make sure that the bead is not covered by the hose band. (Fig. 3-6)
(2) After checking the drainage, wrap the supplied packing
and drain pipe insulator around the pipe. (Fig. 3-7)
Make sure the drain pipe has a downward gradient (1/100 or more) and that there are no water traps.
Tighten the hose clamps so their locking nuts face upward. (Fig. 3-6)
Do not install an air bleeder
as this may cause water to spray from the drain pipe outlet. (Fig. 3-8)
Fig. 3-6
Fig. 3-7
Fig. 3-8
25
Unit: in. (mm)
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 25
Suspension bolt
Nuts and washers (use for upper and lower)
Double nut
Connection pipe
(drain port)
Hose band
Align the hose band with the end of the pipe
Suspension lug
15/32 – 43/64 (12 – 17)
Hard PVC
socket
Supplied
drain hose
VP-25
(Field supply)
Packing
(supplied)
Notch
Hard PVC pipe VP-25
(Field supply)
PVC adhesive
CAUTION
CAUTION
NOTE
Bead
Drain insulator (supplied)
Air bleeder prohibited
CAUTION
Page 26
26
X
Fig. 3-9
Fig. 3-10
Fig. 3-11
Fig. 3-12
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 33-15/32" above the bottom surface of the ceiling. Under no conditions attempt to raise it higher than 33-15/32" above the bottom surface of the ceiling. Doing so will result in water leakage. (Fig. 3-9)
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. 3-10)
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. 3-11)
Provide insulation for any pipes that are run
indoors.
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.
(1) Connect power to the power terminal board (R, S
terminals) inside the electrical component box.
(2) Slowly pour about 0.3 gal of water into the drain pan
to check drainage. (Fig. 3-12)
(3) Short the check pin (CHK) on the indoor control
board and operate the drain pump. Check the water flow through the transparent drain pipe and see if there is any leakage.
(4) When the check of drainage is complete, open the
check pin (CHK) and remount the tube cover.
Be careful since the fan will start when you short the pin on the indoor control board.
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 26
CAUTION
11-3/16 in. or less (as short as possible)
33-15/32 in. or less
0 – 45°
* Length of supplied drain hose = 9-27/32 in.
Upward gradient prohibited
Support pieces
Drainage check
CAUTION
Over 3-15/16 in.
Water (Approx. 0.3 gal)
Plastic container
for water intake
Drain pan outlet
Page 27
27
X
3-6. How to Install the Ceiling Panel
3-6-1. Before Installing the Ceiling Panel
Checking the unit position
(1) Check that the ceiling hole is within this range:
33-55/64 × 33-55/64 to 35-53/64 × 35-53/64 in.
(2) Use the full-scale installation diagram (from the
packaging) that was supplied with the unit to determine the positioning of the unit on the ceiling surface. If the positions of the ceiling surface and unit do not match, air leakage, water leakage, flap operation failure, or other problems may result.
Never place the panel face-down. Either hang
it vertically or 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.)
must be within the range of 15/32 – 43/64 in.
If not within this range, malfunction or other trouble may result.
Fig. 3-13
Fig. 3-14
Fig. 3-15
Remove the air-intake grille and air filter from the ceiling panel. (Figs. 3-16, 3-17 and 3-18)
a) Remove the 2 screws on the latch of the air-intake
grille. (Fig. 3-16)
b) Slide the air-intake grille catches in the direction
shown by the arrows to open the grille. (Fig. 3-17)
c) With the air-intake grille opened, remove the grille
hinge from the ceiling panel by sliding it in the direc­tion shown by the arrow . (Fig. 3-18)
Removing the corner cover
a) Slide the corner cover to the direction shown
by the arrow to remove the corner cover. (Fig. 3-18).
Fig. 3-17
Fig. 3-18
Fig. 3-16
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 27
A
Main unit
CAUTION
1
A
Ceiling side
Ceiling opening dimension
Flap
Latch
Screw
2
1
Corner cover
Air-intake grille hinge
Push
Air-intake grille
1
Corner cover
Ceiling panel
1
2
Ceiling panel
1
Strap
Page 28
28
X
3-6-2. Installing the Ceiling Panel
After completing the wiring process, install the supplied wiring cover before installing the panel. It is not possible to install the wiring cover after installing the panel. The power must be turned ON in order to change the flap angle. (Do not attempt to move the flap by hand. Doing so may damage the flap.)
(1) Insert the temporary fasteners (stainless steel) on
the inside of the ceiling panel into the square holes on the unit to temporarily fasten the ceiling panel in place. (Fig. 3-20-1)
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.
To remove the ceiling panel, support the ceiling
panel while pressing the temporary fasteners toward the outside. (Fig. 3-20-1)
(2) Align the panel installation holes and the unit screw
holes.
(3) Tighten the supplied washer head screws at the
4 panel installation locations so that the panel is attached tightly to the unit. (Fig. 3-20-2)
(4) Check that the panel is attached tightly to the
ceiling.
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. (Fig. 3-21)
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. (Fig. 3-21)
Fig. 3-20-1
Fig. 3-20-2
g
Fig. 3-21
Fig. 3-22
If the screws are not sufficiently tight-
ened, trouble such as that shown in the figure below may occur. Be sure to tighten the screws securely.
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.
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.
Fig. 3-23
Fig. 3-19-1
Fig. 3-19-2
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 28
Inter-unit control wiring
Screw (supplied)
M4-8 or 5/32" – 5/16"
Push when you remove
Celling panel
Wiring cover (supplied) Power supply outlet
Square hole in unit
Temporary fastener
Temporary fastener
Drain tubing corner
Refrigerant tubing corner
After completing the wiring process, install the supplied wiring cover before installing the panel. It is not possible to install the wiring cover after installing the panel.
DRAIN mark
CAUTION
Air leakage
Air leakage from ceiling surface
Staining
Condensation, water leakage
Ceilin
surface
Adjust so that there are no gaps.
Washer head screws
Main unit
Do not allow
Ceiling panel
gaps
REF,PIPE mark
Panel installation hole (4 locations)
Insert a wrench or other tool into the corner cover installation hole and make fine adjustments to the unit nut.
Page 29
29
X
3-6-3. Wiring the Ceiling Panel
(1) Open the cover of the electrical component box.
(2) Connect the 7P wiring connector (red) from the
ceiling panel to the connector in the unit electrical component box.
If the connectors are not connected, the Auto flap will
not operate. Be sure to connect them securely.
Check that the wiring connector is not caught
between the electrical component box and the cover.
Check that the wiring connector is not caught
between the unit and the ceiling panel.
3-6-4. How to Attach the Corner & Air-Intake Grille
Attaching the corner cover and air-intake grille
A. Attaching the corner cover
(1) Check that the safety cord from the corner cover is
fastened to the ceiling panel pin, as shown in the figure.
(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
Removing the grille in the reverse order. By rotating the air-intake grille, it is possible to attach the grille onto the ceiling panel from any of 4 directions. Coordinate the directions of the air-intake grilles when installing multiple units, and change the directions according to customer requests.
When attaching the air-intake grille, be careful
that the flap lead wire does not become caught.
Be sure to attach the safety cord that prevents
the air-intake grille from dropping off to the ceiling panel unit as shown in the figure at right.
With this ceiling panel, the directions of the air-intake
grille lattices when installing multiple units, and the position of the label showing the company name on the corner panel, can be changed according to customer requests, as shown in the figure below. However, the optional wireless receiver kit can only be installed at the refrigerant-tubing corner of the ceiling unit.
g
Fig. 3-24
Fig. 3-25
Fig. 3-26
Fig. 3-27
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 29
(Direction that the unit faces has been changed to facilitate explanation.)
Electrical component box cover
Screws (3 locations)
Ceiling panel side
Ceiling panel wiring connector
Locations of the air-intake grille catches at the time the product is shipped. * The grille can be installed with these
catches facing in any of 4 directions.
Unit drain hose side
Unit electrical component box
Mains side
Clamp
* Pass the wiring connector through the clamp to fasten it in place, as shown in the fi
Hole for ceiling panel hook
ure.
Pin
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.
Hook that prevents the grille from dropping
Unit refrigerant tube side
Optional wireless receiver kit * Can only be installed in this position.
Can be installed rotated 90˚
Page 30
30
X
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. (“P09” is displayed on the remote controller.) 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 wiring connector inside the electrical component box, and then remove the 4 mounting screws.
3-6-7. Adjusting the Auto Flap
The air-direction louver on the ceiling panel outlet can be adjusted as follows.
Adjust the louver to the desired angle using the remote controller. The louver also has an automatic air-sweeping
mechanism.
Never attempt to move the louver 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. Special Remarks
DC Fan Tap Change Procedure
<Steps> Be sure to turn OFF the power (at mains) before beginning the work below. (1) In the table below, check the field-supply parts that will be used. (If this setting is not made, the airflow may
decrease and condensation may occur.)
(2) Setting (a)
Open the cover of the electrical component box. Short the short-circuit pin TP3 (2P, yellow) on the indoor unit control PCB.
(3) Setting (b)
Open the cover of the electrical component box. Short the short-circuit pin TP6 (2P, white) on the indoor unit control PCB.
Fig. 3-28
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 30
NOTE
Setting
(a)
(b)
Setting (a): Go to (2). Setting (b): Go to (3).
Air shield material (for use with 3-direction discharge)*
Air shield material (for use when a discharge duct is connected)*
Air shield material (for use with 2-direction discharge)*
* Use field-supply air shield material.
Indoor unit control PCB
* PCB model No.: CR-SXRP56B-B
Page 31
31
A
1-Way Air Discharge Semi-Concealed Type (A Type)
3-8. Suspending the Indoor Unit
(1) Follow the diagrams to make the holes in the ceiling.
(Figs. 3-29 and 3-30)
(2) Depending on the ceiling type:
Insert suspension bolts as shown in Fig. 3-31
or
Use existing ceiling supports or construct a suitable
support as shown in Fig. 3-32.
Make sure that the length of suspension bolts from the
bottom of the unit is 19/32 in. or more. (Fig. 3-33)
Fig. 3-29
It is important that you use extreme care in supporting the indoor unit from the ceiling. Ensure that the ceiling is strong enough to support the weight of the unit. Before hanging the unit, test the strength of each attached suspension bolt.
(3) Calculate the suspension bolt pitch using the full-
size installation diagram (printed on the package). The relationship between the positions of the suspension lugs, unit, and ceiling panel is as shown in Fig. 3-30.
(4) Cut the ceiling material, if necessary.
(Figs. 3-29 and 3-30) If the system requires fresh air to be drawn into the unit, cut and remove the insulation (both externally and internally) at the location shown as in Figs. 3-34 and 3-35.
When making the cuts to the insulation, be careful not to damage the drain pan.
Fig. 3-31
Unit: in.
Fig. 3-30
Unit: in.
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 31
29-59/64 (Panel outer dimensions) 28-47/64 (Ceiling opening dimension)
1-27/64
25-63/64 (Suspension bolt pitch)
22-3/64
(1-27/64)
19/32
WARNING
A
CAUTION
5-19/64 1-49/64
2-31/64
9-29/64
3-3/16
Flared refrigerant connection outlet (liquid tube)
Hole-in-anchor Hole-in-plug
15-3/4 (Suspension bolt pitch)
23-15/64 (Ceiling opening dimension)
24-13/32 (Outline dimension of panel)
23-5/8
19/32
3-47/64
Drain pipe connection (Be sure to connect the supplied flexible hose.)
22-3/64
10-1/32
Flared refrigerant connection outlet (gas tube)
1-19/64
Concrete
Suspension bolt
(M10 or 3/8")
2-9/16
1-49/64
Inter-unit Control Wiring
Powe r supply outlet
Insert
12-19/64
1-3/16
Page 32
32
A
t
Fig. 3-34
Fig. 3-33
Fig. 3-32
3-9. Placing the Unit Inside the Ceiling
(1) Use the supplied M5 or 3/16" screws (4) to attach
the full-size installation diagram to the indoor unit suspension lugs, in order to obtain the ceiling opening dimensions for suspending the unit.
Caution: Piping and wiring work must be performed
inside the ceiling after the unit is suspended. Therefore if the ceiling is already installed, the wiring and piping work should be completed up to the connection points prior to suspending the unit.
(2) Attach the special washers (supplied) and nuts (field
supply) to the suspension bolts (4 locations).
Be sure to use a level gauge and confirm that the unit is level. If it is not level, water leakage may occur.
Fig. 3-35
Unit: in.
Use M10 or 3/8" nuts.The length of the suspension bolts must be such that
there is a space of at least 19/32 in. below the bottom of the suspension lugs, as shown in Fig. 3-33. If the length of the suspension bolts is too long, the bolts may interfere with the ceiling panel and louver motor, preventing their installation.
(3) Thread the 3 hexagonal nuts and 2 washers (field
supply) onto each of the 4 suspension bolts as
shown in Fig. 3-36. 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.
(4) Lift up the indoor unit and fit the suspension bolts
into the notches in the suspension lugs.
(5) Adjust so that the distance between the bottom of
the indoor unit suspension lugs and the bottom of
the ceiling panel is 25/32 – 1 in. Then tighten the
nuts above and below each suspension lug. The
full-size installation diagram can be used to help
adjust the height of the indoor unit.
Unit: in.
Fig. 3-36
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 32
CAUTION
Ceiling tiles
Ceiling suppor
CAUTION
Suspension
lug
25/32 – 1 in.
For fresh air intake (ø3-15/16 hole)
6-11/16
8-1/16
Nuts and washers (Used above and below.)
Full-scale installation diagram
over 19/32 in.
A
For fresh air intake (ø3-15/16 hole)
Suspension bolt
Suspension lug
3-5/32
6-11/16
A
Double nuts
over 19/32 in.
Notch
25/32 – 1 in.
Page 33
33
A
Fig. 3-37
Fig. 3-38
The indoor unit includes a drain pump. Be sure to
use a level gauge and verify that the unit is level.
Before inserting the ceiling material, complete as
much of the drain piping work and refrigerant tubing work as possible.
(6) The distance between the unit and the opening of
the ceiling and the distance between the bottom surface of the ceiling and the bottom surface of the flange of the unit should follow the dimensions given in Figs. 3-37 and 3-38.
3-10. Installing the Drain Piping
(1) Prepare standard hard PVC pipe (O.D. 1-1/4") for
the drain and use the supplied drain hose and hose band to prevent water leaks. The PVC pipe must be purchased separately. The unit’s transparent drain port allows you to check drainage. (Fig. 3-39)
Do not use adhesive at the drain connection port on
the indoor unit.
Insert the drain pipe until it contacts the socket, as
shown in the figure at right, then secure it tightly with the hose band.
Tighten the hose clamps so their locking nuts face
upward. (Fig. 3-39)
Do not use the supplied drain hose bent at a 90°
angle. (The maximum permissible bend is 45°.)
Check the drainage at the unit drain port
(transparent).
(2) After checking the drainage, wrap the supplied
packing and drain pipe insulator around the pipe, then secure it with the supplied clamps. (Fig. 3-40)
Make sure the drain pipe has a downward gradient (1/100 or more) and that there are no water traps.
Fig. 3-39
Fig. 3-40
Unit: in.
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 33
CAUTION
CAUTION
2-1/8
19/32
Suspension bolts
Tubing side
Suspension bolts
19/32
25/32
25/32
Align the hose band with end of the hose, and tighten so that it does not contact the bead.
Drainage check section on drain port (transparent)
Drain hose
(supplied)
Bead
Ceiling material
25/32
Hard PVC
socket VP-25
(not supplied)
Packing (supplied)
2-1/8
Hard PVC pipe
VP-25
(not supplied)
PVC adhesive
NOTE
Drain insulator (supplied)
Page 34
34
A
Fig. 3-41
Fig. 3-43
Fig. 3-42
Fig. 3-44
3-11. 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.
(1) Connect power to the power terminal board (R, S
terminals) inside the electrical component box.
(2) Pour about 0.2 gal of water into the drain pan using a
siphon pump through the air outlet grille. (Fig. 3-45)
(3) Short the check pin (CHK) on the indoor control board
and operate the drain pump. Check the water flow
through the transparent drain pipe and see if there is any
leakage.
(4) When the drainage check is complete, open the check
pin (CHK) and remount the insulator.
Be careful since the fan will start when you short the pin on the indoor control board.
The bottom drain port is for use only during test runs and servicing inspections. Do not connect the drain pipe to the bottom drain port.
Fig. 3-45
Do not install an air bleeder as this may cause water
to spray from the drain pipe outlet. (Fig. 3-41)
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 33-15/32" above the bottom surface of the ceiling. Under no conditions attempt to raise it higher than 33-15/32" above the bottom surface of the ceiling. Doing so will result in water leakage. (Fig. 3-42)
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. 3-43)
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. 3-44)
Provide insulation for any pipes that are run indoors.
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 34
CAUTION
Air bleed valve
11-13/16 in. or less
33-15/32 in. or less
0 – 45°
* Length of supplied drain hose = 9-27/32 in.
Uphill slope
Support
bracket
CAUTION
CAUTION
Drainage check
water (0.2 gal)
Drain tube connection (transparent)
Discharge port
Page 35
35
A
Fig. 3-46
Route the power wiring into the indoor unit through the power inlet on the side of the unit. At this time, be
sure that the wiring passes through the power inlet in the unit power section. If the wiring does not pass through this inlet, it may become pinched by the ceiling panel, and may result in fire.
Pass the wiring through the power inlet on the electrical component box and connect it to the terminal plate.
Then fasten the wiring in place with the clamp.
3-12. Electrical Power Wiring
(1) Wiring connections
The power inlet is on the side of the indoor unit where the refrigerant tubing is located. The electrical component box is on the lower air intake surface of the indoor unit. (Fig. 3-46)
(2) Wiring
3-13. How to Install the Ceiling Panel
3-13-1. Before Installing the Ceiling Panel
Checking the position of the indoor unit
(1) Check that the dimensions of the ceiling opening are
the following:
28-47/64" × 23-17/64"
* For details, refer to the installation manual that was
supplied with the indoor unit.
(2) Check that the positions of the ceiling surface and
indoor unit are as shown in Fig. 3-47. If the positions
of the ceiling surface and indoor unit are not correct,
problems such as air leakage, water leakage, and flap
operation trouble may occur.
Do not rest the panel facing downwards, lean up against
a wall, or leave it sitting on top of a protruding object. Doing so may scratch the panel surface.
Do not apply excessive force to the flap.
(Doing so may damage the flap.)
Fig. 3-47
Be sure that this distance is within the range of 25/32 – 1 in. If it is not within this range, malfunction or other problems may result.
Fig. 3-48
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 35
Refrigerant tubing joint (gas tube)
Refrigerant tubing joint (liquid tube)
Drain pipe connection (Be sure to connect the supplied flexible hose.)
Inter-unit Control Wiring
Power supply outlet
WARNING
Component Parts
Part name Quantity Appearance Part name Quantity Appearance
"
Ceiling panel
Washer-head screw
1
Screw
4
2
ø11/16
4 × 12 or 5/32" × 15/32"
For fastening side panel
M5 × 40 or 5/16" × 9/16"
Indoor unit
25/32 – 1 in.
Ceiling surface
Ceiling opening dimension
Flap
Page 36
36
A
Removing the intake grille
Slide the intake grille hooks (2 locations) in the direction of the arrow to open the intake grille. (fig. 3-49a)
When the intake grille is open, press a flathead screwdriver against the rear tabs (2 locations) and pull out the intake grille. (Fig. 3-49b)
Removing the side panel
Grasp the finger grip on the side panel and slide the panel in the direction of arrow to remove the panel. (There are 2 panels: 1 each on the left and right sides.) (Fig. 3-51)
1
Fig. 3-50
Fig. 3-49a
Fig. 3-49b
Fig. 3-51
3-13-2. Installing the ceiling panel
(1) Fasten the hooks on both sides of the ceiling panel
to the indoor unit. The hooks on one side (2
locations) are stationary, while the hook on the other
side is moveable. (Fig. 3-52)
(2) Angle the panel somewhat and fasten the stationary
hook into the fastener on the side of the unit.
(3) After verifying that the hook is fastened, press the
other end up until the ceiling panel is level. Then
press upwards until the moveable hook is fastened
into the fastener on the unit.
(4) Verify that the hooks on both sides of the ceiling
panel are securely fastened to the unit. If the hooks
are not securely fastened, the panel may fall. At this
point, the panel is now provisionally fastened to the
unit.
When removing the panel, press the movable hook
toward the inside while supporting the panel. (Fig. 3-53)
Fig. 3-52
Fig. 3-53
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 36
Press on the tabs with a flathead (minus) screwdriver while pulling out the intake grille.
Ta b
1
Slide
Slide
Hinge
Screw
Screw
Hook
Intake grille
Side panel
Stationary hook
Hook receiver
Moveable hook
Moveable hook
Press to remove.
Page 37
37
A
(5) Align the installation holes on the panel with the
bolt holes on the unit.
(6) Insert the supplied washer head bolts into the 4
panel installation holes, and tighten until the panel is securely fastened against the unit. (Fig. 3-54)
(7) Verify that the panel is securely fastened against
the unit.
At this time, make sure that there is no gap
between the indoor unit and the ceiling panel, or between the ceiling panel and the ceiling surface. (Fig. 3-55)
If there is a gap between the ceiling panel and the
ceiling, leave the panel attached and adjust the installation height of the indoor unit upwards until the gap with the ceiling is eliminated. (Fig. 3-56)
If the adjustment is small enough that it will not
affect the levelness of the indoor unit or the drain piping, then the unit height can be adjusted from the side panel installation holes, with the ceiling panel still attached.
Fig. 3-54
Fig. 3-56
CAUTION
• If the screws are not fully tightened, problems such as those shown below may occur. Be sure to tighten the screws securely.
• If there is a gap between the ceiling surface and the ceiling panel even when the screws are fully tightened, readjust the height of the indoor unit. (Fig. 3-56)
Fig. 3-55
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 37
Indoor unit
Must be no gap.
Ceiling surface
Ceiling panel
Indoor unit
Ceiling panel
Washer-head screw
Insert a wrench or other standard tool into the side panel installation holes and make fine adjustments to the indoor unit nuts.
Air leakage
Ceiling panel air leakage
Stains
Condensation and water leakage
Adjust so that there is no gap.
Page 38
A
3-13-3. Wiring the ceiling panel
(1) Loosen the 2 screws on the electrical component
box lid, and remove the lid. (Fig. 3-57)
(2) Fasten the wiring connector (7P, red) which comes
out from the ceiling panel using the lead wire clamps (2 locations) on the unit. Then connect it to the connector (7P, red) inside the indoor unit electrical component box. (Fig. 3-58)
If the connector is not connected, “P09” is displayed
on the remote controller, and the automatic flap will not operate. Be sure to securely connect the connec­tor.
Check that the wiring connector is not pinched
between the electrical component box and the lid.
Check that the wiring connector is not pinched
between the indoor unit and the ceiling panel.
3-13-4. Installing the side panel and intake grille
A. Installing the side panel
(1) Grasp the side panel finger grip and slide the panel
in the direction of the arrow to install the side panel. (Fig. 3-59)
(2) Fasten the side panel onto the ceiling panel using
the supplied screws (4 × 12 or 5/32" × 15/32").
B. Installing the intake grille
To install the intake grille, follow the procedure for
removing it in the reverse order. (Fig. 3-60)
When installing the intake grille, be careful that the
flap lead wire does not become pinched. (Fig. 3-60)
3-13-5. Other
A. Check after installation
Check again that there is no gap between the indoor
unit and the ceiling panel, or between the ceiling panel and the ceiling surface.
* If there is a gap, then water leakage and condensa-
tion may occur.
Check that the wiring connections are secure.
* If the wiring is not connected, the automatic flap will
not operate. (“P09” is displayed on the remote controller.) In addition, water leakage, condensation, and other problems may occur.
B. If a wireless remote controller is used
For details concerning the installation procedure,
refer to the installation manual which was supplied with the optional wireless remote controller and indoor unit internal receiver.
Fig. 3-57
Fig. 3-58
Fig. 3-59
Fig. 3-60
38
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 38
Screw
Electrical compornent box
Indoor unit connector
Ta bs
Slide the side panel so that the side panel tabs are fastened to
the ceiling panel. Then fasten in place with the supplied screws
(4 × 12 or 5/32" × 15/32").
Electrical compornent box cover
Inter-unit control wiring
Power supply outlet
Fasten with screws
(4 × 12 or 5/32" × 15/32")
Ta b
Slide
Screw
Screw
Page 39
39
U
Fig. 3-61
Fig. 3-62
Concealed Duct Type (U Type)
3-14. Required Minimum Space for
Installation and Service
This air conditioner is usually installed above the ceiling so that the
indoor unit and ducts are not visible. Only the air intake and air outlet ports are visible from below.
The minimum space for installation and service is shown in
Fig. 3-61 and Table 3-3.
It is recommended that space is provided (17-23/32 × 17-23/32 in.)
for checking and servicing the electrical system.
Fig. 3-62 and Table 3-4 show the detailed dimensions of the indoor
unit.
Table 3-3
Unit: in.
Table 3-4
Unit: in. (mm)
Unit: in.
Unit: in.
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 39
Type
A (Length)
Number of duct flanges
7, 12, 18
30-23/32 (780)
2
24
42-17/32 (1,080)
3
36
61-13/32 (1,560)
4
Type
7, 12, 18
Dimension
24
36
ABCDEFGH I JK
26-1/16
37-7/8
56-25/32
23-5/8
(7-7/8 × 3)
35-7/16
(7-3/32 × 5)
54-11/32
(9-1/16 × 6)
27-9/16 30-23/32 11-13/32 10-5/16 26-25/3228-5/327-3/32–13-3/88 12
39-3/8 42-17/32 11-13/32 10-23/32 38-19/32 39-31/32 5-1/8
58-9/32 61-13/3213-3/16 12-7/32 57-15/3258-27/32 5-1/8
A (Suspension bolt pitch)
min. 9-27/32
22-27/32
Air outlet duct flange
Indoor unit
9-21/32
(9-21/32 × 1)
19-9/32
(9-21/32 × 2)
min.
Electrical
9-27/32
component box
Inspection access
17-23/32
17-23/32
Refrigerant tubing
min. 25-19/32
min.
15-3/4
No. of holes
LM
9-27/3212 16
9-7/16 16 18
3-17/32
7-9/32
2-5/322-5/32
13/32
13/32
7-7/8
10-1/4
(O.D.)
13/32
31/32
3-15/32
10-13/16
3-15/16
(Ceiling opening dimension)
1-7/32 1-7/32
22-27/3231/32
(Suspension bolt pitch)
L-ø1/4
(Hole)
I
EEEF
A (O.D.)
H (Duct suspension bolt pitch) G (Ceiling opening dimension)
B
C
(Suspension bolt pitch)
D
Refrigerant tubing joint (liquid tube)
13/32
11
IJJK
3/43/4
4-ø15/32
(Hole)
18-ø1/8
(Hole)
Inspection access
1-9/16
(5-29/32)
2-15/16 2-9/16
Refrigerant tubing joint (gas tube) Upper drain port (O.D. 1-1/4 in.) Bottom drain port (O.D. 1-1/32 in.) Suspension lug Power supply outlet (2-ø1-3/16 hole) Fresh air intake port (ø5-29/32 hole) Flange for the flexible air outlet duct (ø7-7/8 hole) Tube cover Electrical component box Flange for the air intake duct (Option or field supply)
Inter-unit control wiring
12-7/32
31/32 8-9/32
13/32
(17-23/32
17-23/32)
(Field supply)
4-17/32
24-13/16 31/32
1-3/16
6-5/16
2-3/4
31/32
2-3/4
3-11/32
Inspection access panel
5-1/8
11-7/32
Ceiling
31/32
6-7/8
1-3/8
10
9
7-15/32
Page 40
U
Fig. 3-63
3-15. Suspending the Indoor Unit
Depending on the ceiling type:
• Insert suspension bolts as shown in Fig. 3-63
or
• Use existing ceiling supports or construct a suitable support as shown in Fig. 3-64.
Fig. 3-64
Fig. 3-65
It is important that you use extreme care in supporting the indoor unit inside the ceiling. Ensure that the ceiling is strong enough to support the weight of the unit. Before hanging the unit, test the strength of each attached suspension bolt.
(1) When placing the unit inside the ceiling, determine the pitch of
the suspension bolts referring to the dimensional data on the previous page. (Fig. 3-61 and Table 3-3) Tubing must be laid and connected inside the ceiling when suspending the unit. If the ceiling is already constructed, lay the tubing into position for connection to the unit before placing the unit inside the ceiling.
(2) Screw in the suspension bolts allowing them to protrude from
the ceiling as shown in Fig. 3-63. (Cut the ceiling material, if necessary.)
(3) Thread the 3 hexagonal nuts and 2 washers (field supply) onto
each of the 4 suspension bolts as shown in Figs. 3-65 and 3-66. Use 1 nut and 1 washer for the upper part, and 2 nuts and 1 washer for the lower part, so that the unit will not fall off the suspension lugs.
Fig. 3-67 shows an example of installation.
Fig. 3-66
Fig. 3-67
40
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 40
WARNING
Hole-in-anchor Hole-in-plug
Concrete Insert
Suspension bolt (M10 or 3/8") (field supply)
Ceiling tiles
Ceiling support
Nuts and washers (use for upper and lower)
Double nuts
Suspension bolt
Hexagonal nut
Suspension bolt
Suspension lug
Notch
Air outlet duct
Air-outlet grille
Ceiling material Indoor unit
Bolt anchor
Suspension bolt
Air-intake grille
Air-intake duct
Double nuts
Page 41
U
Fig. 3-68
Fig. 3-69
3-16. Installing the Drain Piping
(1) Prepare standard hard PVC pipe (O.D. 1-1/4") for the drain
and use the supplied hose band to prevent water leaks. The PVC pipe must be purchased separately. The transparent drain part on the unit allows you to check drainage. (Fig. 3-68)
Do not use adhesive at the drain connection port on the
indoor unit.
Insert the drain pipe until it contacts the socket, as shown in
the figure at right, then secure it tightly with the hose band.
Do not use the supplied drain hose bent at a 90° angle.
(The maximum permissible bend is 45°.)
Tighten the hose clamps so their locking nuts face upward.
(FIg. 3-68)
(2) After connecting the drain piping securely, wrap the supplied
packing and drain pipe insulator around the pipe, then secure it with the supplied vinyl clamps. (Fig. 3-69)
Make sure the drain pipe has a downward gradient (1/100 or more) and that there are no water traps.
If it is necessary to increase the height of the drain pipe, the
section directly after the connection port can be raised a maximum of 19-11/16". Do not raise it any higher than 19-11/16", as this could result in water leaks. (Fig. 3-71)
Do not install the pipe with an upward gradient from the connec-
tion port. This will cause the drain water to flow backward and leak when the unit is not operating. (Fig. 3-72)
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. 3-73)
3-17. 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.
(1) Connect power to the power terminal board (R, S terminals)
inside the electrical component box.
(2) Remove the tube cover and through the opening, slowly pour
about 0.3 gal of water into the drain pan to check drainage.
(3) Short the check pin (CHK) on the indoor control board and oper-
ate the drain pump. Check the water flow through the transparent drain port and see if there is any leakage.
Do not install an air bleeder as this may
cause water to spray from the drain pipe outlet. (Fig. 3-70)
Fig. 3-70
Fig. 3-71
Fig. 3-72
Fig. 3-73
41
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 41
Align the hose band with end of the hose, and tighten so that it does not contact the bead.
Drainage check section on drain port (transparent)
Drain hose (supplied)
Hard PVC
socket VP-25
(not supplied)
Hard PVC pipe
VP-25
(not supplied)
CAUTION
NOTE
CAUTION
Bead
Air bleeder
Prohibited
Good
Packing (supplied)
PVC adhesive
Drain insulator (supplied)
Vinyl clamps
11-13/16" or less
19-11/16" or less
Upward gradient
Prohibited
Support pieces
Page 42
42
U
Fig. 3-74
(4) When the check of drainage is complete, open the check pin (CHK)
and remount the insulator and drain cap onto the drain inspection port.
Be careful since the fan will start when you short the pin on the indoor control board.
(1) Remove 4 screws on the electrical component box and
remove the cover plate.
(2) Disconnect the fan motor sockets in the box.
(3) Take out the booster cable (sockets at both ends)
clamped in the box.
(4) Securely connect the booster cable sockets between the
disconnected fan motor sockets in step 2 as shown in Fig. 3-75.
(5) Place the cable neatly in the box and reinstall the cover
plate.
Fig. 3-75
Fig. 3-76
How to read the diagram
The vertical axis is the external static pressure (psi, in.Aq) while the horizontal axis represents the air flow (ft.
3
/minute). The characteristic curves for “HT,” “H,” “M” and “L” fan speed control are shown. The nameplate values are shown based on the “H” air flow. For the 24 type, the air flow is 635 ft.3/minute, while the external static pressure is 7.1 × 10-3psi at “H” position. If exter­nal static pressure is too great (due to long extension of ducts, for example), the air flow volume may drop too low at each air outlet. This problem may be solved by increasing the fan speed as explained above.
3-18. Increasing the Fan Speed
If external static pressure is too great (due to long extension of ducts, for example), the air flow volume may drop too low at each air outlet. This problem may be solved by increasing the fan speed using the following procedure:
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 42
CAUTION
Indoor Fan Performance
( 10
-3
psi)
21.8
(in.Aq)
0.6
( 10
Power supply outlet
Inter-unit control wiring
-3
psi)
21.8
18 Type7, 12 Type
(in.Aq)
0.6
Fan
motor
Booster cable
Fan motor socket
(At shipment) (Booster cable installed)
Electrical component box
Booster cable
ne
14.5
Limit li
Limit line
7.3
External Static Pressure
00
177
Air Flow (ft.
-3
psi)
( 10
21.8
Limit line
14.5
Limit line
7.3
External Static Pressure
00
353
Air Flow (ft.3/minute)
NOTE
M
L
3
24 Type
M
L
HT : Using the booster cable
HT
H
353
/minute)
HT
H
706
0.4
0.2
( 10
(in.Aq)
0.6
0.4
0.2
21.8
14.5
External Static Pressure
H : At shipment
it line
14.5
Lim
Limit line
7.3
External Static Pressure
00
Air Flow (ft.3/minute)
-3
psi)
ne
Limit li
Limit line
7.3
00
706
Air Flow (ft.3/minute)
M
L
353
36 Type
M
L
1059
0.4
0.2
HT
H
530
(in.Aq)
0.6
HT
0.4
H
0.2
Page 43
43
D
Concealed Duct High-Static Pressure Type (D Type)
3-19. Required Minimum Space
for Installation and Service
This air conditioner is usually installed above the ceiling
so that the indoor unit and ducts are not visible. Only the air intake and air outlet ports are visible from below.
The minimum space for installation and service is shown
in Fig. 3-77.
It is recommended that space be provided (23-5/8" ×
23-5/8") for checking and servicing the electrical system.
Fig. 3-78 and Table 3-3 show the detailed dimensions of
the indoor unit.
Fig. 3-78
Fig. 3-77
Unit: in.
Table 3-5
Unit: in.
Unit: in.
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 43
5-1/8
19-11/16
11-27/64
Min. 23-5/8
(Space for service)
5-1/8
37
31-7/32
7 × 3-15/16 = 27-9/16
22 - ø1/8 (Hole for full circumference)
2-5/32 1-37/64
1-57/64
37
38-37/64
Suspension
bolt pitch
Inspection access (23-5/8" × 23-5/8")
Drain pan
Ceiling face
25/32
3-35/64
2-23/64
Suspension bolt pitch
Electrical
component
box
Air suction side
Refrigerant tubing
Min. 23-5/8
Space for
service
Min. 22-53/64
Min. 5-1/8
Type
36
48
Length
16-17/32
17-23/32
1
A
12-13/64
2-5/322-5/32
A
3-15/16
B
15-35/64
16-47/64
24-13/32
19-11/16 2-3/4
C
2-43/64
3-55/64
16 - ø1/8 (Hole for full
circumference)
25/6425/64
(Suspension bolt pitch)
3-5/32 11-27/64
19/32
1-3/8 1-3/8
1-31/32
2-5/32
B
11-13/16
3-15/16
1-13/16
19-11/16
38-37/64
(Suspension bolt pitch)
39-49/64
37
4 × 3-15/16 = 15-3/4
Electrical component box
4-ø20 hole for suspension bolt
Refrigerant liquid line (ø3/8 or ø1/4) Refrigerant gas line (ø3/4 or ø5/8) Power supply outlet
19/32
Drain connection (25A, O.D. 1-1/4") Duct connection for suction Duct connection for discharge
Inter-unit control wiring
3-15/16
Drain pan
3-15/16
3-55/64
1-11/32
Page 44
44
D
Fig. 3-79
3-20. Suspending the Indoor Unit
Depending on the ceiling type:
Insert suspension bolts as shown in Fig. 3-79
or
Use existing ceiling supports or construct a suitable support as
shown in Fig. 3-80.
Fig. 3-80
Fig. 3-81
It is important that you use extreme care in supporting the indoor unit inside the ceiling. Ensure that the ceiling is strong enough to suport the weight of the unit. Before hanging the unit, test the strength of each attached suspension bolt.
(1) When placing the unit inside the ceiling, determine the pitch
of the suspension bolts referring to the dimensional data given
previously. (Figs. 3-77 and 3-78)
Tubing must be laid and connected inside the ceiling when
suspending the unit. If the ceiling is already constructed, lay
the tubing into position for connection to the unit before placing
the unit inside the ceiling.
(2) Screw in the suspension bolts allowing them to protrude from
the ceiling as shown in Fig. 3-79. (Cut the ceiling material, if
necessary.)
(3) Suspend and fix the indoor unit using the 2 hexagonal nuts
(field supply) and special washers (supplied with the unit) as
shown in Fig. 3-81.
Fig. 3-82
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 44
WARNING
Hole-in-anchor Hole-in-plug
Concrete Insert
Suspension bolt (M10 or 3/8") (field supply)
Ceiling tiles
Ceiling support
Air-outlet grille
Hexagonal nuts and washers
(2 sets)
Suspension bolt
25/32" – 1-31/32"
Air-intake grille
Page 45
D
Fig. 3-83
Fig. 3-84
Fig. 3-85
3-21. Installing the Drain Piping
(1) Prepare standard hard PVC pipe (O.D. 1-1/4") for the
drain and use the supplied drain socket to prevent water leaks. The PVC pipe must be purchased separately. When doing this, apply adhesive for the PVC pipe at the connection point.
(2) If connecting a drain joint (supplied) to the threaded
drain port, first wrap the drain port threads with sealing tape, then connect the joint. (Fig. 3-83)
(3) After connecting the drain pipe securely, wrap insulator
(field supply) around the pipe.
(4) Ensure the drain pipe has a downward gradient (1/100
or more) and prepare traps as indicated in Fig. 3-84.
(5) Also, in another part of the pipe arrangement, prepare
traps with an inspection plug to clean dust or debris that may cause leaking of water. (Fig. 3-85)
(6) After connecting the drain piping, slowly pour water into
the drain pan to check that the water drains smoothly.
3-22. Caution for Ducting Work
This unit has high static pressure (applicable external static
pressure Max. 24.2 ××10-3to 31.3 ××10-3psi (0.68 – 0.88 in.Aq). In the case of small pressure resistance (for instance, a short duct), install a damper for adjusting air flow volume as air flow volume / air flow noise increases.
If the air conditioner is to be installed in a room such as
an office or meeting room which needs a low sound level, provide a supply and return noise absorption chamber with an acoustic liner.
Include an air filter (field supply) at the return duct.
3-23. Indoor Fan Performance
How to Read the Diagram
The vertical axis is the External Static Pressure (psi, in.Aq) while the horizontal axis represents the Air Flow (ft.
3
/minute). The characteristic curve for the “H,” “Med,” and “Lo” fan speed control. The nameplate values are shown based on the “H” air flow. Therefore in the case of 36 Type, the flow is 1059 ft.3/minute, while the External Static Pressure is 0.72 in.Aq at “H” position. If the external static pressure is too great (due to long extension of duct, for example), the air flow volume may drop too low at each air outlet.
Fig. 3-86
45
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 45
Sealing tape
Drain pan
Drain opening (25A or 1-11/32
Drain joint (supplied)
" male screw)
Downward gradient
Min. 1/100
Good
Not good
36.3
29.0
21.8
14.5
External Static Pressure
7.3
NOTE
36 Type48 Type
Limit line
M
L
0
883 1059 1236
Air Flow (ft.3/minute)
H : At shipment
H
Limit line
Inspection plug
(in.Aq)( 10-3 psi)
H
M
1.0
0.8
0.6
0.4
0.2
0
Min.
3-15/16 in.
Min. 1-31/32 in.
36.3
29.0
21.8
14.5
External Static Pressure
7.3
ne
Limit li
0
1059 1236 1412
Air Flow (ft.3/minute)
(in.Aq)( 10-3 psi)
1.0
0.8
H
M
L
ne
Limit li
0.6
0.4
H,M
0.2
0
Page 46
46
T
Ceiling-Mounted Type (T Type)
3-24. Required Minimum Space for Installation and Service
(1) Dimensions of suspension bolt pitch and unit
Table 3-6
(2) Refrigerant tubing • drain hose position
Fig. 3-87
Fig. 3-88
Unit: in.
(3) Unit opening position (Refrigerant tubing • drain hose • power inlet port • remote controller wiring inlet port)
*1 Use a compass saw, jig saw or similar tool and cut along the indented portion of the side panel.
Unit: in.
Fig. 3-89
Unit: in.
Unit: in.
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 46
Dimension
Type
12, 18
ABC
33-21/32 35-53/64 8-17/64
24
44-19/64 46-29/64 8-17/64
9-7/8
Left side
Rear (figure shows view from front)
1-1/4
6-47/64
1-17/32
3-5/16
Left drain position Right drain position
2-23/64
Closed with rubber stopper at time of shipment.
1-1/4
6-11/16
12-19/32
(Suspension bolt pitch)
2-21/64 2-61/64
Liquid tubing
Gas tubing
B
Ceiling side
A
(Suspension bolt pitch)
3-61/64 3-13/16
9/64
4-9/64
5-3/4
2-3/64
6-47/64
1-17/32
26-49/64
1-5/641-5/64
Right side
C
Air outlet
8-1/2
(Liquid tubing • Gas tubing)
6-11/32
9-7/8
Air intake
Rear outlet port
Inter-unit control wiring
Left-side drain hose outlet port
(ø1-3/16", knock-out, use rubber grommet) Outside air intake duct connection port
(ø3-15/16
", knock-out)
6-47/64
*1
Side panel
Power supply outlet (ø1-3/16", knock-out)
Rear tubing hole
3-5/16
Left-side drain hose outlet port
3-35/64
10-5/16
4-59/64 2-53/64
13-21/32
3-11/64
4-11/64
Right-side drain hose outlet port
Side panel
*1
Position of plate inside side panel
Page 47
47
T
It is important that you use extreme care in supporting the indoor unit from the ceiling. Ensure that the ceiling is strong enough to support the weight of the unit. Before hanging the ceiling unit, test the strength of each attached suspension bolt.
Fig. 3-93
Fig. 3-94
Fig. 3-95
(4) Wall and ceiling side opening position
Fig. 3-91
Fig. 3-90
Fig. 3-92
3-25. Suspending the Indoor Unit
(1) Place the full-scale diagram (supplied) on the ceiling
at the spot where you want to install the indoor unit. Use a pencil to mark the drill holes. (Fig. 3-91).
Since the diagram is made of paper, it may shrink or stretch slightly because of high temperature or humidity. For this reason, before drilling the holes maintain the correct dimensions between the markings.
(2) Drill holes at the 4 points indicated on the full-scale
diagram.
(3) Depending on the ceiling type:
a) Insert suspension bolts as shown in Fig. 3-92.
or
b) Use existing ceiling supports or construct a
suitable support as shown in Fig. 3-93.
* If the optional drain up kit is installed, create a ø3-15/16" hole along the dotted line (part marked with * in figure).
(4) Screw in the suspension bolts, allowing them to
protrude from the ceiling as shown in Figs. 3-92 and 3-93. The distance of each exposed bolt must be of equal length within 1-15/16". (Fig. 3-94)
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 47
Figure shows view from front
5-45/64
NOTE
3-35/64
ø3-15/16 wall side opening
ø3-15/16 wall side opening (for left-side drain hose)
5-5/16
Ceiling
ø3-15/16 ceiling opening
ø3-15/16 ceiling opening
Figure shows view from top
Wall
Full-scale installation diagram
Hole-in-anchor Hole-in-plug
3-35/64 *
6-7/64
4-59/64
Ceiling
Concrete Insert
Wall
WARNING
unit
Ceiling surface
Fixture
Within
1-15/16"
Screw
Latch
Pull out the air-intake grille pushing claws of the hinges
Slide
Air-intake grille
Suspension bolt (M10 or 3/8") (field supply)
Ceiling tiles
Ceiling support
A
A
Hinge
Page 48
48
T
(5) Before suspending the indoor unit, remove the 2 or 3 screws on the
latch of the air-intake grilles, open the grilles, and remove them by pushing the claws of the hinges as shown in Fig. 3-95. Then remove both side panels sliding them along the unit toward the front after removing the 2 attachment screws. (Fig. 3-96)
(6) Carry out the preparation for suspending the indoor unit. The
suspension method varies depending on whether there is a suspended ceiling or not. (Figs. 3-97 and 3-98)
(7) Suspend the indoor unit as follows:
a) Mount 1 washer and 2 hexagonal nuts on each suspension bolt as
shown in Fig. 3-99.
b) Lift the indoor unit, and place it on the washers through the notches,
in order to fix it in place. (Fig. 3-100)
c) Tighten the 2 hexagonal nuts on each suspension bolt to suspend
the indoor unit as shown in Fig. 3-101.
The ceiling surface is not always level. Please confirm that the indoor unit is evenly suspended. For the installation to be correct, leave a clearance of about 3/8" between the ceiling panel and the ceiling surface and fill the gap with an appropriate insulation or filler material.
(8) If the tubing and wiring are to go towards the rear of the unit, make
holes in the wall. (Fig. 3-102)
(9) Measure the thickness of the wall from the inside to the outside and cut
PVC pipe at a slight angle to fit. Insert the PVC pipe in the wall. (Fig. 3-103)
Fig. 3-96
Fig. 3-97
Fig. 3-98
Fig. 3-99
Fig. 3-100
Fig. 3-101
Fig. 3-102
The hole should be made at a slight downward slant to the outside.
Fig. 3-103
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 48
Slide toward front side
Side panel
NOTE
Unit
Fixture
Suspension bolt (field supply)
Ceiling surface
Washer (supplied)
Double nut (field supply)
Unit
Suspension bolt (field supply) Washer (field supply)
Washer (supplied)
Double nut (field supply)
Washer
(supplied)
Suspension bolt
Approx.
Ceiling surface
Nut (field supply)
"
63/64
NOTE
Indoor side
Outdoor side
PVC pipe (locally purchased)
Cut at slight angle
INSIDE
Wall
OUTSIDE
PVC pipe
Slight angle
Page 49
T
Attach so that the hose band fastener is
on the side of the drain port. (Fig. 3-108)
Attach the hose bands so that each is
approximately 13/64 – 63/64 in. from the end of the supplied drain hose.
Fig. 3-107
Fig. 3-104
If the tubing is to be routed out together, use a box cutter or simi­lar tool to cut out the part of the rear cover indicated by the marked area in the figure below, to match the positions of the tubes. Then draw out the tubing.
Fig. 3-105
Fig. 3-106
3-28. Installing the Drain Piping
Prepare standard PVC pipe for the drain and connect it to the
indoor unit drain pipe with the supplied hose clamps to prevent water leaks.
(1) Drain hose connection
The drain hose is connected below the refrigerant tubing.
(2) Installing the drain hose
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.
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).
Wrap the hose with the supplied drain hose insulation and use the
4 twist ties so that the hose is insulated with no gaps.
Connect the drain piping so that it slopes downward from the unit
to the outside. (Fig. 3-107)
3-26. Duct for Fresh Air
There is a duct connection port (knock-out hole) at the right­rear of the top panel of the indoor unit for drawing in fresh air. If it is necessary to draw in fresh air, remove the cover by opening the hole and connecting the duct to the indoor unit through the connection port. (Fig. 3-104)
3-27. Shaping the Tubing
The positions of the refrigerant tubing connections are
shown in the figure below. (The tubing can be routed in 3 directions.)
* When routing the tubing out through the top or right sides,
knock out the appropriate parts in the top panel and cut notches in the side panel as shown in Fig. 3-89.
* When routing the tubing out through the top, the optional
L-shape tubing kit is required.
49
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 49
Rear outlet port
Inter-unit control wiring
", knock-out, use rubber grommet)
(ø1-3/16
Outside air intake duct connection port (ø3-15/16
", knock-out)
Powe r supply outlet
", knock-out)
(ø1-3/16
Rear tubing hole
Left-side drain hose outlet port
Rear cover
Donward gradient
Min. 1/100
Good
Not good
CAUTION
Page 50
50
T
Fig. 3-108
Never allow traps to occur in the course of the piping.Insulate any piping inside the room to prevent drip-
ping.
After the drain piping, pour water into the drain pan to
check that the water drains smoothly.
If the drain hose is to be raised, use the optional drain
up kit. The drain hose can be raised 23-5/8" above the top of the main unit. (For details, refer to the manual of the optional part.)
* If the drain hose is
routed through the left side, refer to Fig. 3-105, and follow the procedure above to install the hose. Re-attach the rubber stopper that was earlier removed onto the right side. The rubber stopper can be inserted easily by using a screwdriver or similar tool to press the stopper into the drain port on the main unit. Press the stopper into the main unit drain port as far as it will go.
Check local electrical codes and regulations before wiring. Also, check any specified instruction or limitations.
How to carry out power supply wiring
(1) Wiring connection ports The power inlet ports are located at the rear and top. The remote controller wiring inlet ports are located at the rear and top (for use with the wired remote controller). For details, refer to Fig. 3-104. For the method used to insert the wiring, refer to the figure below. (Fig. 3-109)
When removing the fastening bracket from the cover of the electrical component box, use caution to avoid dropping the bracket.
(2) How to carry out wiring
Open the knock-out hole on the rear or top of the
main unit. Attach the supplied rubber grommet and pull the power wiring into the main unit.
Feed the wiring into the wiring inlet port on the
electrical component box. Connect the wiring to the terminal plate and fasten in place with the supplied clamp.
Perform electrical and grounding work in
accordance with the package A/C power specifications, and following local electrical codes and regulations.
Fig. 3-109
Unit: in.
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 50
Screwdriver
Drain port
Rubber stopper
Tw ist tie (4 ties, supplied)
Unit drain port
13/64
63/64 63/64
Unit drain pan
CAUTION
13/64
Hard PVC pipe (equivalent to VP-20) (Field supply)
Drain hose (supplied)
Hose band (2 bands, supplied)
Position to fasten hose bands
Drain hose insulation (supplied)
5-33/64
CAUTION
Inter-unit control wiring
ø1-9/32 knock-out
Eyelet (supplied)
Powe supply outlet
Page 51
51
K
Wall-Mounted Type (K Type)
3-29. Removing the Rear Panel from the Unit
(1) Remove the set screws used to fasten the rear panel to the
indoor unit during transportation.
(2) Press up on the frame at the 2 locations shown by the arrows
in the figure at right, and remove the rear panel.
Tubing can be extended in 4 directions as shown in Fig. 3-111. Select the direction which will provide the shortest run to the outdoor unit.
3-30. Selecting and Making a Hole
(1) Remove the rear panel from the indoor unit and place it on
the wall at the location selected. Fix the rear panel and hook the unit onto it temporarily. Make sure the unit is horizontal using a carpenter’s level or tape measure to measure down from the ceiling.
(2) Determine which notch of the rear panel should be used.
(Fig. 3-112)
(3) Before drilling a hole, check that there are no studs or pipes
behind the determined location. The above precautions are also applicable if tubing goes through the wall in any other location.
(4) Using a sabre saw, key hole saw or hole-cutting drill attach-
ment, make a hole (dia. 3-5/32") in the wall. (Fig. 3-113)
(5) Measure the thickness of the wall from the inside edge to the
outside edge and cut the PVC pipe at a slight angle 15/64" shorter than the thickness of the wall. (Fig. 3-114)
(6) Place the plastic cover over the end of the pipe (for indoor
side only) and insert in the wall. (Fig. 3-115)
The hole should be made at a slight downward gradient to the outside.
Fig. 3-110
Fig. 3-111
Fig. 3-112
Fig. 3-113
Fig. 3-114
Avoid areas where electrical wiring or conduits are located.
g
g
3-31. Installing the Rear Panel onto the Wall
Confirm that the wall is strong enough to support the unit. See either Item a) or b) below depending on the wall type.
a) If the Wall is Wooden
(1) Attach the rear panel to the wall with the 10 screws provided. (Fig. 3-116)
If you are not able to line up the holes in the rear panel with the beam locations marked on the wall, use Rawl plugs or toggle bolts to go through the holes on the panel or drill 3/16" dia. holes in the panel over the stud locations and then mount the rear panel.
Fig. 3-116
Fig. 3-115
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 51
NOTE
Screws used during transportation
Press
Remove the rear panel
Left tubing
Center of left rear tubing hole
Tubing hole diameter ø3-5/32
Left-rear tubing
Indoor side
Right-rear tubing (recommended)
Ri
Center of right rear tubing hole
Outdoor side
ht tubin
NOTE
CAUTION
Plastic cover
INSIDE
Wall
PVC pipe (locally purchased)
Cut at slight angle
OUTSIDE
PVC pipe
Slight angle
Page 52
52
K
(2) Check with a tape measure or carpenter’s level. This is
important so that the unit is correctly installed. (Fig. 3-117)
(3) Make sure the panel is flush against the wall. Any space
between the wall and unit will cause noise and vibration.
b) If the Wall is Brick, Concrete or Similar
Drill 3/16" dia. holes in the wall. Insert Rawl plugs for appropriate mounting screws. (Fig. 3-118)
3-32. Removing the Grille to Install the Indoor Unit
In principle, with this model wiring can be completed without removing the grille. However, if it is necessary to change the settings on the PCB, follow the procedure below.
Removing the grille
(1) Lift up on both sides of the air-intake grille to open it.
(Fig. 3-119)
(2) Remove the filter. (Fig. 3-119)
(3) Adjust the flap so that it is horizontal. (Fig. 3-120)
(4) Open the installation screw covers below the grille
(3 locations). (Fig. 3-120)
(5) Remove the screws. (Fig. 3-120)
(6) Remove the grille. (Fig. 3-121)
Attaching the grille
(1) Close the flap.
(2) Keep the grille installation tabs aligned with the top portion of
the grille, and reinstall the lower portion of the grille. Fit the installation tabs into the grooves and press the lower portion of the grille back into its original position to install it.
(3) Press on the installation tabs to completely close the grille.
Check that the grille and frame are fitted tightly together.
3-33. Preparing the Tubing
(1) Arrangement of tubing by directions
a) Right or left tubing
The corner of the right or left frame should be cut with a hack saw or similar. (Fig. 3-122)
b) Right-rear or left-rear tubing
In this case, the corners of the frame do not need to be cut.
(2) Be sure to insulate the part of the drain hose that is
run indoors, and the refrigerant tubing. If these are not insulated, condensation may result in dripping and damage to walls and furniture. The flare nuts on the 24-type (only) are large; therefore, use the supplied insulation material.
Fig. 3-117
Fig. 3-118
Fig. 3-119
Fig. 3-120
Fig. 3-121
g
Fig. 3-123
g
Fig. 3-122
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 52
Filter
Flap
Open the
3/16" dia. hole
Rawl plug
Intake grille
rille
Right tubing outlet
When left and right side tubin
Installation screw cover
Remove the grille
Installation tabs
Frame
Installation tabs
Page 53
(3) To mount the indoor unit on the rear panel.
1. When installing the indoor unit, position the indoor unit onto the installation tabs on the upper part of the rear panel. (Fig. 3-123)
2. Press on the air outlet to hold it in place, and press the lower part of the indoor unit until a “click” sound is heard and the indoor unit is securely fastened to the installation tabs on the lower side of the rear panel. (Fig. 3-124)
Raising the clamp to lift up the indoor unit will facilitate this work. (Fig. 3-125)
To remove the indoor unit, press up on the 2 locations ( marks) on the lower part of the unit frame to disconnect the installation tabs. Refer to Section 3-1. “Removing the Rear Panel from the Unit” (Fig. 3-110). Then lift up the indoor unit to remove it.
3-34. Shaping the Tubing
Right-rear tubing
(1) Shape the refrigerant tubing so that it can easily go into the hole.
(Fig. 3-126)
(2) After performing a leak test, wrap both the refrigerant tubing and
drain hose together with insulating tape. The drain hose should be positioned below the refrigerant tubes, and should be given sufficient space so that no strong tension is applied to it.
(3) Push the wiring, refrigerant tubing and drain hose through the hole
in the wall. Adjust the indoor unit so it is securely seated on the rear panel.
Left or left-rear tubing
(1) Pass the tubing and drain hose into the rear of the indoor unit.
Provide sufficient length for the connections to be made. Next, bend the tubing with a pipe bender, and connect them.
(2) After performing a leak test, wrap the refrigerant tubing and drain
hose together with insulating tape, as shown in the figure at right. (Fig. 3-128) Then fit the tubing into the tubing storage space in the rear of the indoor unit and clamp in place.
(3) Adjust the indoor unit so that it is securely installed onto the rear
panel.
3-35. Installing the Drain Hose
a) The drain hose should be slanted downward to the
outside. (Fig. 3-129) b) Never form a trap in the course of the hose. c) If the drain hose will run in the room, insulate the hose* so that
chilled condensation will not damage furniture or floors.
* Foamed polyethylene or its equivalent is recommended.
Fig. 3-124
Fig. 3-125
Fig. 3-126
Fig. 3-129
Fig. 3-127
Do not supply power to the unit or operate it until all tubing and wiring to the outdoor unit are completed.
Fig. 3-128
K
53
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 53
Rear panel tab
Press
Clamp
Insulating
tape
Refrigerant
tubing
Plastic cover
Insulating tape
Drain hose
Indoor and outdoor unit connection wiring
Insulation
Refrigerant tubing
Rear panel
Inter-unit wiring
Indoor unit
WARNING
Slant
Refrigerant tubing
Page 54
54
K
3-36. When Using Wireless Remote Controller Instead Of Wired Remote Controller
When the wireless remote controller is to be used, slide the switch on the indoor unit control PCB.
• If this setting is not made, an alarm will occur. (The operation lamp on the display blinks.)
• This setting is not necessary if both the wired remote controller and wireless remote controller are used.
• The location of the switch varies depending on the type of PCB used. Check the model name before making the setting.
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 54
KHX0752 / 0952 / 1252 / 1852
CR-KR74GXH56A-0
Setting at time of factory shipment
Slide No. 3 on SW101 from ON OFF.
KHX2452
CR-KR254GXH56A-0
Setting at time of factory shipment
Slide No. 3 on SW101 from ON OFF.
Page 55
4. HOW TO INSTALL THE OUTDOOR UNIT
4-1. Transporting
When transporting the unit, have it delivered as close to the installation site as
possible without unpacking. Use a hook for suspending the unit. (Fig. 4-1)
When hoisting the outdoor unit, pass ropes or straps under the bottom plate
as shown in the figure at right. When hoisting, the angle between the rope
and top panel must be 70° or greater so that the rope does not come into
contact with the fan guard.
(Use 2 lengths of rope 25 ft. long or longer.)
When passing the ropes through the square holes of the bottom plate:
Place the rope in the outer edge of the square holes.
Use protective panels or padding at all locations where the rope contacts the
outer casing or other parts to prevent scratching. In particular, use protective
material (such as cloth or cardboard) to prevent the edges of the top panel
from being scratched.
Be careful of the fan.
There is danger of injury if the fan starts to turn during inspection. Be sure to
turn OFF the remote power switch before beginning inspection.
4-2. Installing the Outdoor Unit
(1) Use anchor bolts (M12 or 15/32") or similar to securely anchor the unit in
place. (Fig. 4-2)
(2) Be sure the rubber vibration insulator and platform extend to the inside of the
legs. In addition, the washers used to anchor the unit from the top must be
larger than the installation anchor holes. (Figs. 4-2 and 4-3)
Fig. 4-1
Fig. 4-2
Fig. 4-3
Unit: in.
Unit: in.
The vibration insulator, base, or platform must be large enough to bear the full surface of the base plate legs.
Unit: in.
Top view
55
Fig. 4-4
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 55
CAUTION
(Positions where anchor bolts are fastened)
Installation anchor hole (4 – 19/32 × 25/32 oval holes)
36-7/32 (Installation hole pitch)
37-13/32 (Maximum dimensions)
35-3/64 (Ceiling panel dimensions)
31-7/64 (Installation hole pitch)
35-3/64 (Ceiling panel dimensions)
Plate leg
Anchor bolts
Washer
25/32
3-29/64
Vibration insulator
1-31/32
(3-15/16)
(3-15/16)
(Detailed view of legs)
Base
Surface where
installation anchor
brackets are
installed
31/32 1-
4 – 19/32 25/32 hole
19/32
1-33/64
35-3/64 (Ceiling panel dimensions) 35-3/64 (Ceiling panel dimensions)
31-7/64 (Installation hole pitch) 31-7/64 (Installation hole pitch)
74-1/64 (Ceiling panel dimensions)
70-5/64 (Installation hole pitch)
35-3/64 (Ceiling panel dimensions)
36-7/32 (Installation hole pitch)
37-13/32 (Maximum dimensions)
Page 56
56
Fig. 4-6
Fig. 4-5
4-3. Routing the Tubing
The tubing can be routed out either from the front or from the bottom. (Fig. 4-6)
The connecting valve is contained inside the unit. Therefore, remove the front panel. (Fig. 4-6)
(1) If the tubing is routed out from the front, use cutting pliers or a similar tool to cut out the tubing outlet slit (part indicated
by ) from the tubing cover. (Figs. 4-5 and 4-6)
(2) If the tubing is routed out from the bottom, remove the
slit part ( ).
Use a drill bit approximately 13/64 dia. to create holes at
the 4 slit hole indentations (openings).
Punch out the slit part ( ).
Be careful not to damage the base plate.
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 56
Remove 2 screws
Front
Tubing cover
Bottom
Remove 11 panel screws from front panel
Use cutting pliers or similar tool to cut cover out
Indentation (4 locations)
Slit hole
Page 57
57
4-4. Prepare the Tubing
Material: Use C1220 phosphorous deoxidized copper as described in JIS H3300, “Copper and Copper Alloy Seamless Pipes
and Tubes.” (For tubes that are ø7/8"
(ø22.22 mm) or larger, use 1/2H material or H material. For all others use O material.)
Tubing size
Use the tubing size indicated in the table below.
When cutting the tubing, use a tube cutter, and be sure to remove any burrs.
(The same applies to distribution tubing (optional).)
When bending the tubes, bend each tube using a radius that is at least 4 times the outer diameter of the tube.
When bending, use sufficient care to avoid crushing or damaging the tube
For flaring, use a flare tool, and be sure that flaring is performed correctly.
Use sufficient caution during preparation of the tubing. Seal the tube ends by means of caps or taping to prevent dust, moisture, or other foreign substances from entering the tubes.
Refrigerant tubing (Existing tubing can be used.)
4-5. Connect the Tubing
Use the supplied connector tubing. (See figure below.)
14053 type (16 hp)
09053 type (10 hp)
Tubing size (in. (mm))
Material O Material 1/2H • H
ø1/4" (ø6.35) t1/32" (0.8) ø7/8" (ø22.22) t5/128" (1.0)
ø3/8" (ø9.52) t1/32" (0.8) ø1" (ø25.4) t5/128" (1.0)
ø1/2" (ø12.7) t1/32" (0.8) ø1-1/8" (ø28.58) t5/128" (1.0)
ø5/8" (ø15.88) t5/128" (1.0) ø1-1/4" (ø31.75) t3/64" (1.1)
ø3/4" (ø19.05) over t5/128" (1.0) ø1-1/2" (ø38.1) over t3/64" (1.15)
ø1-5/8" (ø41.28) over t3/64" (1.20)
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 57
CAUTION
3
1
2
Refrigerant tubing
1
Gas tubing
2
Liquid tubing
3
Balance tube
Connection method Supplied parts used?
Brazing
Flare connection
Flare connection
Ye s3/4" ø7/8")
No
No
3
1
2
Refrigerant tubing
1
Gas tubing
2
Liquid tubing
3
Balance tube
Connection method Supplied parts used?
"
Brazing
Flare connection
Flare connection
Ye s (ø1
ø1-1/8")
No
No
Page 58
58
Precautions for brazing
Be sure to replace the air inside the tube with nitrogen to prevent oxide film from forming during the brazing process. Be sure to use a damp cloth or other means to cool the valve unit during brazing.
1. Be sure to use nitrogen. (Oxygen, CO2, and CFC must not be used.)
2. Use a pressure-reducing valve on the nitrogen tank.
3. Do not use agents intended to prevent the formation of oxide film. They will adversely affect the refrig­eration oil, and may cause equipment failure.
4. The balance tube is not used if only 1 outdoor unit is installed. Use the unit in the same conditions as when it was shipped from the factory.
Refrigerant tube port
Use caulking, putty, or a similar material to fill any gaps at the
refrigerant tube port ( ) in order to prevent rainwater, dust or
foreign substances from entering the unit.
* Perform this work even if the tubing is routed out in a downward
direction.
Tighten each cap as specified below.
Tightening torque for each cap
Tubing routed out
through the front side
Tubing routed out
through the bottom
Work method
Unit: in.
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 58
Cap tightening torque
Service port cap (width 19/32", 43/64")
Valve cap (width 55/64", 15/16")
60 – 100 lbs
170 – 220 lbs
·
in. (70 – 120 kgf
·
in. (200 – 250 kgf
Bottom
Tubing cover
·
cm)
·
* Be careful of the cap sizes. The sizes of the service port cap and valve cap on the 14053 type liquid tube valves are different from other valve caps.
cm)
plate
Service port cap
Valve cap (width 55/64)
Service port cap (width 19/32)
Flare nut (ø1/4)
(width 19/32)
Valve cap (width 55/64)
Flare nut (ø3/8)
Do not apply a monkey wrench to the hexagonal part.
Do not use two monkey wrenches when removing or installing the balance tube flare nut. In particular, do not apply a monkey wrench to the hexagonal part at the top of the valve. (If force is applied to this part, gas leakage will occur.)
(0905 Type) (1405 Type)
Valve cap (width 55/64)
Service port cap (width 19/32)
Service port cap (width 19/32)
Flare nut (ø1/4)
Use two monkey wrenches, as shown in the figure, when removing the liquid tube valve flare nut.
Service port cap (width 43/64)
Valve cap (width 15/16)
Valve cap (width 55/64)
Flare nut (ø3/8)
1. Do not apply a wrench to the valve cap when removing or installing the flare nuts. Doing so may damage the valve.
2. If the valve cap is left off for a long period of time, refrigerant leakage will occur. Therefore, do not leave the valve cap off.
3. Applying refrigerant oil to the flare surface can be effective in preventing g oil which is suitable for the refrigerant that is used in the system. (This unit utilizes R410A refrigerant, and the refrigerant oil is ether oil (synthetic oil). However, hub oil (synthetic oil) can also be used.)
as leakage, however be sure to use a refrigerant
Valve cap (width 55/64)
Service port cap (width 19/32)
Field-supply tube
Brazing locations
Remote valve
Ta pi ng
Pressure-reducing valve (regulator)
Nitrogen
CAUTION
Page 59
59
5. ELECTRICAL WIRING
5-1. 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, and a power supply disconnect and circuit breaker
for overcurrent protection should be provided in the
exclusive line.
(3) To prevent possible hazards from insulation failure, the
unit must be grounded.
(4) Each wiring connection must be done 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.
(7) Regulations on wire diameters differ from locality to
locality. For field wiring rules, please refer to your
LOCAL ELECTRICAL CODES before beginning.
You must ensure that installation complies with all
relevant rules and regulations.
(8) To prevent malfunction of the air conditioner caused by
electrical noise, care must be taken when wiring as
follows:
The remote control wiring and the inter-unit control wiring
should be wired apart from the inter-unit power wiring.
Use shielded wires for inter-unit control wiring between
units and ground the shield on both sides.
(9) If the power supply cord of this appliance is damaged, it
must be replaced by a repair shop appointed by the
manufacturer, because special purpose tools are
required.
5-2. Recommended Wire Length and Wire Diameter for Power Supply System
* With ring-type wire terminal.
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 59
Outdoor unit
Type
(A) Power supply
Wire size Max. length
CHDX09053 64 ft. 60 A
CHDX14053 100 ft. 80 A
AWG #8
AWG #4
Time delay fuse or
circuit capacity
Indoor unit
Type
K
A, X, T, U
D
(B) Power supply
AWG #14
Max. 492 ft.
Max. 426 ft.
Max. 196 ft.
Time delay fuse or
circuit capacity
15 A
15 A
15 A
Control wiring
(C) Inter-unit (between outdoor and
(D) Remote control wiring (E) Control wiring for group control
indoor units) control wiring
AWG #18 (0.75 mm
2
) AWG #18 (0.75 mm2) AWG #18 (0.75 mm2)
Use shielded wiring*Use shielded wiring Use shielded wiring
Max. 3,280 ft.
Max. 1,640 ft.
NOTE
Max. 1,640 ft. (Total)
(F) Inter-outdoor unit control wiring
AWG #18 (0.75 mm
2
)
Use shielded wiring
Max. 1,640 ft.
Page 60
60
5-3. Wiring System Diagram
(1) Refer to Section 5-2. “Recommended Wire Length and
Wire Diameter for Power Supply System” for the
explanation of “A,” “B,” “C,” “D,” and “E,” in the above
diagram.
(2) The basic connection diagram of the indoor unit shows
the 7P terminal board, so the terminal boards in your
equipment may differ from the diagram.
(3) Refrigerant Circuit (R.C.) address should be set before
turning the power on.
(4) Regarding the R.C. address setting, refer to page 74.
Address setting can be executed by remote controller
automatically. Refer to page 74 – 78.
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 60
Power supply 208 / 230V, 1ø, ~60Hz
Remote controller
Power supply 208 / 230V, 1ø, ~60Hz
Remote controller
Power supply 208 / 230V, 1ø, ~60Hz
WHT BLK
WHT BLK
Group control:
L1 L2
Ground
D
1
1
2
2
Ground
L1 L2
Ground
D
1
1
2
2
Ground
L1 L2
Ground
B
E
Indoor unit (No. 1)
B
Indoor unit (No. 2)
B
Indoor unit (No. 3)
L1
L2
U1
U2
R1
R2
C
C
Ground
Ground
Outdoor unit INV unit
1
U1
2
U2
3
4
3
5
4
A
L1
Power supply
L2
208 / 230V, 3ø, ~60Hz
L3
Ground
Ground
F
L1
L2
U1
U2
R1
R2
Ground
Ground
C
L1
L2
Inter-outdoor-unit control wiring
Outdoor unit INV unit
3
4
A
1
2
3
4
5
L1 L2 L3
Ground
Power supply 208 / 230V, 3ø, ~60Hz
Ground
U1
U2
R1
R2
Ground
C
Power supply 208 / 230V, 1ø, ~60Hz
Remote controller
WHT BLK
L1 L2
Ground
B
D
1
1
2
2
Ground
NOTE
Indoor unit (No. n)
L1
L2
U1
U2
R1
R2
Ground
1(L1) 2(L2)
Power supply
7P terminal board
U2
U1
Inter-unit
control wiring
X, A, U, D, T Type
5P terminal board
123 45
1(L1)2(L2)
Power
supply
U1 U2
Inter-unit
control wiring
K Type
R1
R2
Remote
controller
Page 61
61
(1) When linking outdoor units in a network (S-net link system), disconnect the terminal extended from the short plug
(CN003, 2P Black, location: right bottom on the outdoor main control PCB) from all outdoor units except any one
of the outdoor units. (When shipping: In shorted condition.)
Otherwise the communication of S-net link system is not performed. For a system without link (no connection
wiring between outdoor units), do not remove the short plug.
(2) Do not install the inter-unit control wiring in a way that forms a loop. (Fig. 5-1)
Fig. 5-1
Fig. 5-2
Fig. 5-3
(3) Do not install inter-unit control wiring such as star branch
wiring. Star branch wiring causes mis-address setting.
(4) If branching the inter-unit control wiring, the number of branch points should be 16 or fewer.
(Branches less than 3.3 ft. are not included in the total branch number.) (Fig. 5-3)
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 61
CAUTION
Outdoor unit Outdoor unit Outdoor unit
Prohibited
Indoor unit Indoor unit Indoor unit Indoor unit Indoor unit
NO
Outdoor unit Indoor unit Indoor unit Indoor unit
NO
Indoor unit Indoor unit Indoor unit
Branch point
Prohibited
Outdoor unit
Indoor unit
Outdoor unit Outdoor unit Outdoor unit
Branch point
16 or fewer
Indoor unit Indoor unit Indoor unit Indoor unit
more than 3.3 ft.
Indoor unit
more than 3.3 ft.
Indoor unit
less than 3.3 ft.
Indoor unit
Indoor unit Indoor unit Indoor unit
Page 62
62
Fig. 5-4
Fig. 5-5
Fig. 5-6
(5) Use shielded wires for inter-unit control wiring (c)
and ground the shield on both sides, otherwise
misoperation from noise may occur. (Fig. 5-4)
Connect wiring as shown in Section “5-3. Wiring
System Diagram.”
Loose wiring may cause the
terminal to overheat or result
in unit malfunction. A fire
hazard may also exist.
Therefore, ensure that all
wiring is tightly connected.
When connecting each power wire to the terminal, follow
the instructions on “How to connect wiring to the terminal”
and fasten the wire securely with the fixing screw of the
terminal plate.
How to connect wiring to the terminal
For stranded wiring
(1) Cut the wire end with cutting pliers, then strip the
insulation to expose the stranded wiring about 3/8 in.
and tightly twist the wire ends. (Fig. 5-5)
(2) Using a Phillips head 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 pressure
terminal.
(4) Place the ring pressure terminal, and replace and
tighten the removed terminal screw using a screwdriver.
(Fig. 5-6)
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 62
Shielded wire
WARNING
Ground
Strip 3/8 in.
Ground
Stranded wire
Ring pressure terminal
Special washer
Wire
Screw
Ring pressure terminal
Terminal plate
Screw and Special washer
Ring pressure
terminal
Wire
Page 63
63
6. HOW TO PROCESS TUBING
The liquid tubing side is connected by a flare nut, and the
gas tubing side is connected by brazing.
6-1. Connecting the Refrigerant Tubing
Use of the Flaring Method
Many of 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.
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. 1 – 2 ft. longer
than the tubing length you estimate.
(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. 6-1)
When reaming, hold the tube end downward and be sure
that no copper scraps fall into the tube. (Fig. 6-2)
(3) Remove the flare nut from the unit and be sure to
mount it on the copper tube.
(4) Make a flare at the end of copper tube with a flare
tool.* (Fig. 6-3)
(*Use “RIGID
®
” or equivalent.)
A good flare should have the following characteristics:
inside surface is glossy and smooth
edge is smooth
tapered sides are of uniform length
Fig. 6-1
Fig. 6-2
Fig. 6-3
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 63
Deburring
NOTE
Before
After
Copper tubing
Reamer
NOTE
Flare nut
Copper tubing
Flare tool
Page 64
64
Caution Before Connecting Tubes Tightly
(1) Apply a sealing cap or water-proof tape to prevent dust
or water from entering the tubes before they are used.
(2) 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. 6-4)
(3) 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. 6-5)
Adjust the shape of the liquid tube using a tube bender
at the installation site and connect it to the liquid tubing
side valve using a flare.
Cautions During Brazing
Replace air inside the tube with nitrogen gas to
prevent copper oxide film from forming during the
brazing process. (Oxygen, carbon dioxide and Freon
are not acceptable.)
Do not allow the tubing to get too hot during
brazing. The nitrogen gas inside the tubing may
overheat, causing refrigerant system valves to
become damaged. Therefore allow the tubing to
cool when brazing.
Use a reducing valve for the nitrogen cylinder.
Do not use agents intended to prevent the formation
of oxide film. These agents adversely affect the
refrigerant and refrigerant oil, and may cause
damage or malfunctions.
6-2. Connecting Tubing Between Indoor and
Outdoor Units
(1) Tightly connect the indoor-side refrigerant tubing
extended from the wall with the outdoor-side tubing.
(2) To fasten the flare nuts, apply specified torque as at
right:
When removing the flare nuts from the tubing
connections, or when tightening them after connecting
the tubing, be sure to use 2 monkey wrenches or
spanners as shown. (Fig. 6-6)
If the flare nuts are over-tightened, the flare may be
damaged, which could result refrigerant leakage and
cause in injury or asphyxiation to room occupants.
For the flare nuts at tubing connections, be sure to use
the flare nuts that were supplied with the unit, or else
flare nuts for R410A (type 2). The refrigerant tubing that
is used must be of the correct wall thickness as shown in
the table at right.
Fig. 6-4
Fig. 6-5
Fig. 6-6
Because the pressure is approximately 1.6 times higher
than conventional refrigerant pressure, the use of ordinary
flare nuts (type 1) or thin-walled tubes may result in tube
rupture, injury, or asphyxiation caused by refrigerant
leakage.
In order to prevent damage to the flare caused by over-
tightening of the flare nuts, use the table above as a guide
when tightening.
When tightening the flare nut on the liquid tube, use a
monkey wrench with a nominal handle length of 7-7/8 in.
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 64
Apply refrigerant lubricant here and here
Union
To rq ue wrench
Flare nut
Indoor unit
Tube diameter
ø1/4" (ø6.35 mm)
ø3/8" (ø9.52 mm)
ø1/2" (ø12.7 mm)
ø5/8" (ø15.88 mm)
ø3/4" (ø19.05 mm)
Outdoor unit
Tightening torque, approximate
120 – 160 lbs
(140 – 180 kgf
300 – 360 lbs
(340 – 420 kgf
430 – 530 lbs
(490 – 610 kgf
590 – 710 lbs
(680 – 820 kgf
870 – 1040 lbs
·
·
·
·
·
·
·
·
inch cm)
inch cm)
inch cm)
inch cm)
·
(1000 – 1200 kgf
inch
·
cm)
Spanner
Tube thickness
1/32" (0.8 mm)
1/32" (0.8 mm)
1/32" (0.8 mm)
5/128" (1.0 mm)
over 5/128" (1.0 mm)
Page 65
65
Fig. 6-8
Fig. 6-7
6-3. Insulating the Refrigerant Tubing
Tubing Insulation
Thermal insulation must be applied to all unit tubing,
including the distribution joint (purchased separately).
* For gas tubing, the insulation material must be heat
resistant to 248°F or above. For other tubing, it must be
heat resistant to 176°F or above.
Insulation material thickness must be 25/64 in. or greater.
If the conditions inside the ceiling exceed DB 86°F and RH
70%, increase the thickness of the gas tubing insulation
material by 1 step.
Taping the flare nuts
Wind the white insulation tape around the flare nuts at the gas
tube connections. Then cover up the tubing connections with
the flare insulator, and fill the gap at the union with the sup-
plied black insulation tape. Finally, fasten the insulator at both
ends with the supplied vinyl clamps. (Fig. 6-8)
Insulation material
The material used for insulation must have good insulation
characteristics, be easy to use, be age resistant, and must not
easily absorb moisture.
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.
Never grasp the drain or refrigerant connecting outlets when moving the unit.
Three tubes arranged together
Two tubes arranged together
If the exterior of the outdoor unit
valves has been finished with a
square duct covering, make sure
you allow sufficient space to use
the valves and to allow the panels
to be attached and removed.
Fig. 6-9
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 65
CAUTION
CAUTION
Liquid tubing
Insulation
Cosmetic (finishing) tape
Liquid tubing
Insulation
Sealer (supplied)
Unit side insulator
Flare nut
Drain insulator and clamp. Large (supplied)
Packing clamp. Small hose band
pplied)
(su
Insulation tape (white)
Vinyl clamps (supplied)
Refrigerant tubing and insulator (not supplied)
Drain pipe and insulator (not supplied)
Seal
(supplied)
Flare insulator
The procedure used for installing the insulator for both gas and liquid tubes is the same.
Gas tubing
Gas tubing
Balance tubing
Flare insulator (supplied)
Tube insulator (not supplied) Heat resistant 248°F or above
Insulation tape
Vinyl clamp
Page 66
66
Fig. 6-10
Fig. 6-11
6-4. Taping the Tubes
(1) At this time, the refrigerant tubes (and electrical wiring
if local codes permit) should be taped together with
armoring tape in 1 bundle. To prevent the condensation
from overflowing the drain pan, keep the drain hose
separate from the refrigerant 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.
(3) Clamp the tubing bundle to the wall, using 1 clamp
approx. each ft. (Fig. 6-10)
Do not wind the armoring tape too tightly since this will
decrease the heat insulation effect. Also ensure that the
condensation drain hose splits away from the bundle and
drips clear of the unit and the tubing.
6-5. Finishing the Installation
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. 6-11)
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 66
NOTE
Apply putty here
Insulated tubes
Tubing
Clamp
Drain hose
Page 67
67
Fig. 7-1
Fig. 7-2
Fig. 7-3
7. AIR PURGING
Air and moisture in the refrigerant system may have
undesirable effects as indicated below.
pressure in the system rises
operating current rises
cooling (or heating) efficiency drops
moisture in the refrigerant circuit may freeze and block capillary
tubing
water may lead to corrosion of parts in the refrigerant system
Therefore, the indoor unit and tubing between the indoor and
outdoor unit must be leak tested and evacuated to remove any
noncondensables and moisture from the system.
Air Purging with a Vacuum Pump (for Test Run) Preparation
Check that each tube (both liquid and gas tubes) between the
indoor and outdoor units have been properly connected and all
wiring for the test run has been completed. Remove the valve caps
from both the gas and liquid service valves on the outdoor unit.
Note that both liquid and gas tube service valves on the outdoor
unit are kept closed at this stage.
Leak test
(1) With the service valves on the outdoor unit closed, remove the
5/16" flare nut and its bonnet on the gas tube service valve.
(Save for reuse.)
(2) Attach a manifold valve (with pressure gauges) and dry
nitrogen gas cylinder to this service port with charge hoses.
(3) Pressurize the system to no more than 469 psig (33 kgf/cm
2
G)
with dry nitrogen gas and close the cylinder valve when the
gauge reading reaches 469 psig (33 kgf/cm
2
G). Then, test for
leaks with liquid soap.
To avoid nitrogen entering the
refrigerant system in a liquid state, the
top of the cylinder must be higher than
the bottom when you pressurize the
system. Usually, the cylinder is used in
a vertical standing position.
Use a manifold valve for air purging.
If it is not available, use a stop valve
for this purpose. The “Hi” knob of
the manifold valve must always be
kept closed.
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 67
Manifold gauge
Vacuum pump
Outlet Inlet
CAUTION
CAUTION
Pressure gauge
Gas tube
Liquid tube
Manifold valve
Lo Hi
Cylinder valve
Open
Open
Open
Charge hose
Nitrogen gas cylinder (In vertical standing position)
Close
Outdoor unit
Close
Balance tube
Close
Page 68
68
Fig. 7-4
(4) Do a leak test of all joints of the tubing (both indoor and
outdoor) and both gas and liquid service valves. Bub-
bles indicate a leak. Wipe off the soap with a clean cloth
after a leak test.
(5) After the system is found to be free of leaks, relieve the
nitrogen pressure by loosening the charge hose con-
nector at the nitrogen cylinder. When the system pres-
sure is reduced to normal, disconnect the hose from the
cylinder.
Evacuation
(1) Attach the charge hose end described in the preceding
steps to the vacuum pump to evacuate the tubing and
indoor unit. Confirm that the “Lo” knob of the manifold
valve is open. Then, run the vacuum pump. The opera-
tion time for evacuation varies with the tubing length and
capacity of the pump. The following table shows the
amount of time for evacuation:
Required time for evacuation
when 30 gal/h vacuum pump is used
If tubing length is If tubing length is
less than 49 ft. longer than 49 ft.
45 min. or more 90 min. or more
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 68
Manifold valve
Pressure gauge
Gas tube
Liquid tube
Lo Hi
Open
Open
Vac uum pump
Close
Outdoor unit
Close
Open
Balance tube
Close
Page 69
69
Fig. 7-5
Fig. 7-6
The required time in the above table is calculated based on the
assumption that the ideal (or target) vacuum condition is less
than –14.7 psig (–755 mmHg, 5 Torr).
(2) When the desired vacuum is reached, close the “Lo” knob of
the manifold valve and turn off the vacuum pump. Please
confirm that the gauge pressure is under –14.7 psig
(–755 mmHg, 5 Torr) after 4 to 5 minutes of vacuum pump
operation.
Charging additional refrigerant
Charging additional refrigerant (calculated from the liquid
tube length as shown in Section “1-8. Additional Refrigerant
Charge”) using the liquid tube service valve. (Fig. 7-5)
Use a balance to measure the refrigerant accurately.
If the additional refrigerant charge amount cannot be charged
at once, charge the remaining refrigerant in liquid form by
using the gas tube service valve with the system in cooling
operation mode at the time of test run. (Fig. 7-6)
Finishing the job
(1) With a hex wrench, turn the liquid tube service valve stem
counter-clockwise to fully open the valve.
(2) Turn the gas tube service valve stem counter-clockwise to
fully open the valve.
(3) Loosen the charge hose connected to the gas tube service
port (5/16") slightly to release the pressure, then remove the
hose.
(4) Replace the 1/4 in. flare nut and its bonnet on the gas tube
service port and fasten the flare nut securely with an
adjustable wrench or box wrench. This process is very
important to prevent gas from leaking from the system.
(5) Replace the valve caps at both gas and liquid service valves
and fasten them securely.
This completes air purging with a vacuum pump. The air condi-
tioner is now ready for a test run.
Use a cylinder designed for use
with R410A respectively.
To avoid gas from leaking when
removing the charge hose, make
sure the stem of the gas tube is
turned all the way out (“BACK
SEAT” position).
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 69
Manifold valve
NOTE
CAUTION
CAUTION
Pressure gauge
Gas tube
Liquid tube
Balance tube
Lo Hi
Close
Open
Close
Valve
Liquid
R410A
Close
Outdoor unit
Close
Close
Gas tube
Liquid tube
Balance tube
Open
Close
Close
Open
Outdoor unit
Open
Open
Page 70
70
8. TEST RUN
8-1. Preparing for Test Run
Before attempting to start the air conditioner, check
the following.
(1) All loose matter is removed from the cabinet especially
steel filings, bits of wire, and clips.
(2) The control wiring is correctly connected and all
electrical connections are tight.
(3) The protective spacers for the compressor used for
transportation have been removed. If not, remove them
now.
(4) The transportation pads for the indoor fan have been
removed. If not, remove them now.
(5) The power has been connected to the unit for at least 5
hours before starting the compressor. The bottom of the
compressor should be warm to the touch and the
crankcase heater around the feet of the compressor
should be hot to the touch.
(Fig. 8-1)
(6) Both the gas and liquid tube service valves are open. If
not, open them now. (Fig. 8-2)
(7) Request that the customer be present for the trial run.
Explain the contents of the instruction manual, then have
the customer actually operate the system.
(8) Be sure to give the instruction manual and warranty
certificate to the customer.
(9) When replacing the control PCB, be sure to make all the
same settings on the new PCB as were in use before
replacement.
The existing EEP ROM is not changed, and is
connected to the new control PCB.
Fig. 8-1
Fig. 8-2
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 70
ON
(Power must be turned ON at least 5 hours before attempting test run)
Power mains switch
Balance tube
Liquid tube
Gas tube
Page 71
Items to Check Before the Test Run
1. Turn the remote power switch on at least 5 hours before the test, in order to energize the crank case heater.
2. After performing the leak inspection, applying vacuum, and performing refrigerant charge for the tubing which is connected on-site, fully open the outdoor unit service valve. However if only one outdoor unit is installed, a balance tube is not used. Therefore, leave the valve fully closed.
3. When replacing the control PCB, be sure that the settings on the new PCB match those on the old PCB.
4. Use caution when making the settings. If there are duplicated system addresses, or if the settings for the Nos. of the indoor units are not consistent, an alarm will occur and the system will not start.
5. These settings are not made on the indoor unit PCB.
8-2. Test Run Procedure
Fig. 8-3
71
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 71
Recheck the items to check before the test run.
<Outdoor unit control PCB>
Unit No. setting switch
(S007)
<Outdoor unit control PCB>
Unit No. setting switch
(S006)
<Outdoor unit control PCB>
Unit No. setting switch
(S004 and S005)
(Check the link wiring.)
<Outdoor unit control PCB>
Unit No. setti
(S002 and S003)
Refer to Fig. 8-4
ng switch
Have the outdoor sub units been connected?
YES
Set the unit address.
Set the No. of outdoor units.
Set the No. of indoor units.
Are the inter-unit control wires
connected to more than 1 refrigerant
system?
*1
NO
YES
Set the system address.
When multiple outdoor main units exist, disconnect the terminals
extended from the shor ted plugs (CN003) at all outdoor main unit
Alternatively, move the sockets to the OPEN side.
PCBs except for 1.
Is it possible to turn ON the power only
for the 1 refrigerant system where the
test run will be performed?
YES
NO
NO
*1
The unit with the unit
No. set to 1 is the main unit. All other units are sub units.
CASE 1
Note: It is not necessar y to remove the socket
that is used to short-circuit the terminal plugs from the outdoor sub unit PCBs.
CASE 2
Turn ON the indoor and
outdoor unit power for that
refrigerant system only.
NO
CASE 3BCASE 3A
Is it OK to start the compressors?
Turn ON the indoor and
ou
*2
(CN101) on the outdoor main unit PCB.
tdoor unit power.
Short-circuit the mode change pin
At the same time, short-circuit the
automatic address pin (CN100) for 1
second or longer, then release it.
*3 *3
Start indoor and outdoor unit
cooling operation.
LED 1 and 2 blink alternately.
Are LEDs 1 and 2 on the
outdoor unit PCB OFF?
Check that test run preparation is OK.
(Do not allow the short-circuited pins to remain short-circuited.)
Will automatic address setting be
performed in Heating mode?
YES
Is it OK to start the compressors?
Turn ON the indoor and
outdoor unit power.
*2
Short-circuit the automatic address
pin (CN100) on the outdoor main
unit PCB for 1 second or longer,
then release it.
Start indoor and outdoor unit
heating operation.
LED 1 and 2 blink alternately.
NO
YES
Make necessary
corrections
Turn OFF the indoor and
outdoor unit power.
Check the alarm
contents.
*2 A minimum of 5 hours must have passed after the
power was turned ON to the ou
*3 All indoor units operate in all refrigerant systems
where the power is ON.
Make necessary corrections.
Turn OFF the indoor and
outdoor unit power.
Check the alarm contents.
NO
Refer to “Table of Self-Diagnostic Functions and Description of Alarm Displays.”
Short-circuit the automatic address pin (CN100)
on the outdoor main unit PCB for 1 second or
LED 1 and 2 blink alternately
release it.
longer, then
(about 2 or 3 minutes).
Are LEDs 1 and 2 on the
outdoor unit PCB OFF?
YES
tdoor unit.
Set the wired remote controller for test run.
Refer to the remote
controller test-run
settings.
Does system operate?
NO
YES
Return remote control to normal mode
End test run.
Check and make corrections according to
“Table of Self-Diagnostic F
unctions.”
Page 72
72
8-3. Main Outdoor Unit PCB Setting
Fig. 8-4
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 72
CN100
CN101
CN003
S003
S002 S004 S005 S006 S007
Page 73
73
The sub unit control PCB contains the same switches as the main unit control PCB for No. of indoor units, No. of outdoor units, and system address. However it is not necessary to set these switches.
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 73
Examples of the No. of indoor units settings (S005, S004)
No. of indoor units
1 unit (factory setting)
11 units
21 units
31 units
40 units
Indoor unit setting (S005)
(3P DIP switch, blue)
10 20 30
ON
All OFF
1 ON
ON
2 ON
3 ON
1 & 3 ON
Examples of refrigerant circuit (R.C.) address settings (required when link wiring is used) (S003, S002)
System address (S003)
System address No.
System 1 (factory setting)
System 11
System 21
System 30
(2P DIP switch, blue)
Both OFF
1 & 2 ON
2
1
ON
2
1
2
1
ON
2
1
ON
2
1
1 ON
2 ON
3
3
3
3
3
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
10 20
ON
2
1
ON
2
1
ON
2
1
ON
2
1
Indoor unit setting (S004)
(Rotary switch, red)
System address (S002)
(Rotary switch, black)
ON
OFF
ON
OFF
ON
OFF
ON
OFF
0
1
1
1
1
0
1
1
1
Set to 1
Set to 1
Set to 1
Set to 1
Set to 0
Set to 1
Set to 1
Set to 1
Set to 0
Examples of the No. of outdoor units settings (S006)
No. of outdoor units
1 unit (factory setting)
2 units
3 units
4 units
Outdoor unit setting (S006)
(3P DIP switch, blue)
ON
1 ON
2 ON
1 & 2 ON
3 ON
1
ON
12
ON
1
ON
1
2
3
3
3
2
2
3
OFF
OFF
ON
OFF
ON
OFF
ON
ON
Address setting of main outdoor unit (S007)
Unit No. setting
Unit No. 1 (main unit)
(factory setting)
Address setting of outdoor unit (S007)
(3P DIP switch, blue)
ON
21ON3
OFF
Address setting of sub outdoor unit
Unit No. setting
Unit No. 2 (sub unit)
(factory setting)
Unit No. 3 (sub unit)
Unit No. 4 (sub unit)
Address setting of outdoor unit (S007)
(3P DIP switch, blue)
ON
2 ON
12
ON
1 & 2 ON
3 ON
21
21ON3
ON
3
OFF
ON
3
OFF
ON
OFF
Page 74
(1) Automatic Address Setting from the Outdoor Unit
1. To set the number of outdoor units, on the outdoor main unit control PCB set the No. of outdoor units DIP switch (S006) to
(3 units), and set the unit No. DIP switch (S007) to (unit No. 1 – main outdoor unit).
2. On the No. 2 (sub) unit control PCB, set the unit No. switch (S007) to (unit No. 2).
On the No. 3 (sub) unit control PCB, set the unit No. switch (S007) to (unit No. 3).
8-4. Auto Address Setting
Basic wiring diagram: Example (1)
Case 1
Fig. 8-5
3. On the outdoor main unit control PCB, check that the system address rotary switch (S002) is set to “1” and that the DIP switch
(S003) is set to “0.” (These are the settings at the time of factory shipment.)
4. To set the number of indoor units that are connected to the outdoor unit to 10, on the outdoor main unit control PCB set the No. of
indoor units DIP switch (S005) to “1,” and set the rotary switch (S004) to “0.”
5. Turn ON the power to the indoor and outdoor units.
6. On the outdoor main unit control PCB, short-circuit the automatic address pin (CN100) for 1 second or longer, then release it.
(Communication for automatic address setting begins.)
(Automatic address setting is completed when LEDs 1 and 2 on the outdoor main unit control PCB turn OFF.)
7. Operation from the remote controllers is now possible.
* To perform automatic address setting from the remote controller, perform steps 1 to 5, then use the remote controller and com-
plete automatic address setting.
Refer to “Automatic Address Setting from the Remote Controller.”
* To cancel, again short-circuit the automatic address pin (CN100) for 1 second or longer, then release it.
The LED that indicates that automatic address setting is in progress turns OFF and the process is stopped. Be sure to perform automatic address setting again.
74
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 74
• If link wiring is not used (The inter-unit control wires are not connected to multiple refrigerant systems.)
Indoor unit addresses can be set without operating the compressors.
No. 1 (main outdoor unit) settings
System address
(system 1 setting)
(S003)(S002) ON
1
1
No. of outdoor units (3 units
ON
setting)
Outdoor Unit
ON
2
OFF
(S006) (S007)
ON
2
3
1
OFF
No. of indoor units
(10 units setting)
(S004)
(S005)
1ON3
Unit number setting (Unit No. 1)
Unit
No. 1
2
(Main)
0
ON
OFF
ON
1
2
3
ON
OFF
Unit
number setting
(Unit No. 2)
Leave the socket that is used to short-circuit the terminal plug. (CN003)
Outdoor main/sub control wiring
Inter-unit control wiring
No. 2 (sub unit)
settings
(S007)
ON
123
Unit No. 2 (Sub)
ON
OFF
Outdoor main/sub control wiring
Unit
number setting
(Unit No. 3)
No. 3 (sub unit)
settings
(S007)
ON
3
2
1
Unit No. 3 (Sub)
ON
OFF
Indoor Unit
1-1
1-2 1-3
1-10
Remote controller
Remote controller
ON
1
ON
2
3
OFF
ON
ON
1
2
OFF
cross-over wiring
ON
1
ON
1
ON
1
2
3
3
2
2
3
ON
1
ON
2
3
OFF
Page 75
75
Basic wiring diagram: Example (2)
Fig. 8-6
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 75
No. 1 Refrigerant circuit
System address
(system 1 setting)
1
No. of outdoor units (3 units setting)
• If link wiring is used
No. 1 (main outdoor unit) settings
No. of indoor units
(13 units setting)
(S003)(S002)
ON
2
1
(S006)
ON
2
1
Outdoor unit
system 1
Indoor unit
ON
OFF
3
ON
OFF
(S004)
3
(S005)
ON
1
Unit
number setting
(unit No. 1)
ON
3
2
OFF
(S007)
ON
1
Unit
No. 1
(Main)
1-1 1-2
Remote
controller
Unit
ON
number
OFF
setting (unit No. 2)
2
3
Leave the socket that is used to short-circuit the terminal plug. (CN003)
Inter-unit control wiring
* When multiple outdoor main units exist, remove the socket that
is used to short-circuit the terminal plug (CN003) from all outdoor main unit PCBs except for one unit.
Alternatively, move the sockets to the “OPEN” side.
No. 2 (sub unit)
settings
(S007)
ON
123
Unit No. 2 (Sub)
ON
OFF
Outdoor main/sub
Unit
number setting
(unit No. 3)
No. 3 (sub unit)
settings
(S007)
ON
3
2
1
Unit No. 3 (Sub)
ON
OFF
control wiring
1-3 1-13
Remote controller communication wiring
No. 2 Refrigerant circuit
No. of outdoor
units (2 units setting)
No. 1 (main unit) settings
System address
(system 2 setting)
(S003)(S002)
ON
2
1
2
(S006)
ON
123
Outdoor unit
system 2
No. of indoor units (9
ON
OFF
Unit
ON
number setting
(unit No. 1)
OFF
units setting)
(S004)
9
(S005)
2
1ON3
Unit
No. 1
(Main)
ON
OFF
(S007)
ON
ON
2
3
1
OFF
Move the socket to the “OPEN” side (CN003).
Unit
number setting
(unit No. 2)
Inter-unit control wiring
To other system link wiring
Indoor unit
Remote
controller
2-1 2-2 2-9
Remote controller cross-over wiring
Make settings as appropriate for the cases listed below.
(Refer to the instructions on the following pages.)
• Indoor and outdoor unit power can be turned ON for each system separately.
• Indoor and outdoor unit power cannot be turned ON for each system separately.
Automatic address setting in Heating mode
Automatic address setting in Cooling mode
No. 2 (sub unit) settings
(S007)
ON
123
ON
OFF
Unit No. 2 (Sub)
Outdoor main
Case 2
Case 3A
Case 3B
/sub control wiring
Page 76
76
Automatic Address Setting (no compressor operation)
Indoor and outdoor unit power can be turned ON for each system separately.
Indoor unit addresses can be set without operating the compressors.
Automatic Address Setting from Outdoor Unit
1. On the No. 1 (main) unit control PCB, set the unit No. switch (S007) to (unit No. 1).
On the No. 2 (sub) unit control PCB, set the unit No. switch (S007) to (unit No. 2).
On the No. 3 (sub) unit control PCB, set the unit No. switch (S007) to (unit No. 3).
2. To set the number of outdoor units on the outdoor main unit control PCB, set the No. of outdoor units DIP switch (S006) to
(3 units).
3. On the outdoor main unit control PCB, check that the system address rotary switch (S002) is set to “1” and that the DIP
switch (S003) is set to “0” . (These are the settings at the time of factory shipment.)
4. To set the number of indoor units that are connected to the outdoor unit to 13, on the outdoor main unit control PCB set the
No. of indoor units DIP switch (S005) to “1” , and set the rotary switch (S004) to “3.”
5. Turn on power to all indoor and outdoor units in the system.
6. Short-circuit the automatic address pin at the outdoor main unit (CN100) for 1 second or longer, then release it.
(Communication for automatic address setting begins.)
(Automatic address setting is completed when LEDs 1 and 2 on the outdoor main unit control PCB turn OFF.)
7. Next turn the power ON only for the indoor and outdoor units of the next (different) system. Repeat steps 1 – 5 in the same
way to complete automatic address settings for all systems.
8. Operation from the remote controllers is now possible.
* To perform automatic address setting from the remote controller, perform steps 1 – 5, then use the remote controller and
complete automatic address setting.
Refer to “Automatic Address Setting from Remote Controller.”
Case 2
* To cancel, again short-circuit the automatic address pin (CN100) for 1 second or longer, then release it.
The LED that indicates automatic address setting is in progress turns OFF and the process is stopped. Be sure to perform automatic address setting again.
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 76
ON
ON
2
3
1
ON
ON
ON
3
2
1
1
2
3
1
2
3
OFF
ON
ON
1
2
OFF
ON
ON
2
3
1
OFF
Page 77
77
Automatic Address Setting in Heating Mode
Indoor and outdoor unit power cannot be turned ON for each system separately.
In the following, automatic setting of indoor unit addresses is not possible if the compressors are not operating.
Therefore perform this process only after completing all refrigerant tubing work.
Automatic Address Setting from Outdoor Unit
1. Perform steps 1 – 4 in the same way as for .
5. Turn the indoor and outdoor unit power ON at all systems.
6. To perform automatic address setting in , on the outdoor main unit control PCB in the refrigerant system
where you wish to set the addresses, short-circuit the automatic address pin (CN100) for 1 second or longer, then release it.
(Be sure to perform this process for one system at a time. Automatic address settings cannot be performed for more than
one system at the same time.)
(Communication for automatic address setting begins, the compressors turn ON, and automatic address setting in
Heating mode begins.)
(All indoor units operate.)
(Automatic address setting is completed when the compressors stop and LEDs 1 and 2 on the main unit control PCB turn
OFF.)
7. At the outdoor main unit in the next (different) system, short-circuit the automatic address pin (CN100) for 1 second or
longer, then release it.
(Repeat the same steps to complete automatic address setting for all units.)
8. Operation from the remote controllers is now possible.
* To perform automatic address setting from the remote controller, perform steps 1 – 5, then use the remote controller and
complete automatic address setting.
Refer to “Automatic Address Setting from Remote Controller.”
Heating mode
Case 2
Case 3A
* To cancel, again short-circuit the automatic address pin (CN100) for 1 second or longer, then release it.
The LED that indicates automatic address setting is in progress turns OFF and the process is stopped. Be sure to perform automatic address setting again.
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 77
Page 78
78
Automatic Address Setting in Cooling Mode
Indoor and outdoor unit power cannot be turned ON for each system separately.
In the following, automatic setting of indoor unit addresses is not possible if the compressors are not operating.
Therefore perform this process only after completing all refrigerant tubing work.
Automatic address setting can be performed during Cooling operation.
Automatic Address Setting from Outdoor Unit
1. Perform steps 1 – 4 in the same way as for .
5. Turn the indoor and outdoor unit power ON at all systems.
6. To perform automatic address setting in , on the outdoor main unit control PCB in the refrigerant system where
you wish to set the addresses, short-circuit the mode change 2P pin (CN101). At the same time, short-circuit the automatic
address pin (CN100) for 1 second or longer, then release it. (Be sure to perform this process for one system at a time. Automatic
address settings cannot be performed for more than one system at the same time.)
(Communication for automatic address setting begins, the compressors turn ON, and automatic address setting in Cooling
mode begins.)
(All indoor units operate.)
(Automatic address setting is completed when the compressors stop and LEDs 1 and 2 on the outdoor main unit control PCB
turn OFF.)
7. At the outdoor main unit in the next (different) system, short-circuit the automatic address pin (CN100) for 1 second or longer,
then release it.
(Repeat the same steps to complete automatic address setting for all units.)
8. Operation from the remote controllers is now possible.
* Automatic address setting in Cooling mode cannot be done from the remote controller.
Automatic Address Setting* from the Remote Controller
Selecting each refrigerant system individually for automatic address setting
---Automatic address setting for each system: Item code “A1”
1. Press the remote controller timer time button and button at the same time.
(Press and hold for 4 seconds or longer.)
2. Next, press either the temperature setting or button.
(Check that the item code is “A1.”)
3. Use either the or button to set the system No. to perform automatic
address setting.
4. Then press the button.
(Automatic address setting for one refrigerant system begins.)
(When automatic address setting for one system is completed, the system returns to
normal stopped status.) <Approximately 4 – 5 minutes is required.>
(During automatic address setting, “NOW SETTING” is displayed on the remote con-
troller. This message disappears when automatic address setting is completed.)
5. Repeat the same steps to perform automatic address setting for each successive system.
Cooling mode
Case 2
Case 3B
* To cancel, again short-circuit the automatic address pin (CN100) for 1 second or longer, then release it.
The LED that indicates automatic address setting is in progress turns OFF and the process is stopped. Be sure to perform automatic address setting again.
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 78
Page 79
79
Display during automatic address setting
On outdoor main unit PCB
* When automatic address setting has been successfully completed, both LEDs 1 and 2 turn OFF.
* LED 1 is D72. LED 2 is D75.
* If automatic address setting is not completed successfully, refer to the table below and correct the problem. Then perform
automatic address setting again.
Display details of LEDs 1 and 2 on the outdoor unit control PCB
Remote controller display
* Do not short-circuit the automatic address setting pin (CN100) again while automatic address set-
ting is in progress. Doing so will cancel the setting operation and will cause LEDs 1 and 2 to turn
OFF.
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 79
1
2
LED
Blink alternately
( : ON : Blinking : OFF)
LED 1 LED 2
After the power is turned ON (and automatic address setting is not in progress), no communication with the indoor units in that system is possible.
After the power is turned ON (and automatic address setting is not in progress), 1 or more indoor units are confirmed in that system; however, the number of indoor units does not match the number that was set.
Alternating
Simultaneous
Alternating
Automatic address setting is in progress.
Automatic address setting completed.
At time of automatic address setting, the number of indoor units did not match the number that was set. “ ” (when indoor units are operating) indication appears on the display.
Refer to “Table of Self-Diagnostic Functions and Description of Alarm Displays.”
Display meaning
Note: “ ” indicates that the solenoid is fused or that there is a CT detection current failure (current is detected when the
compressor is OFF).
is blinking
Page 80
80
Request concerning recording the indoor/outdoor unit combination Nos.
After automatic address setting has been completed, be sure to record them for future reference.
List the outdoor main unit system address and the addresses of the indoor units in that system in an easily visible location (next to
the nameplate), using a permanent marking pen or similar means that cannot be abraded easily.
Example: (Outdoor) 1 – (Indoor) 1-1, 1-2, 1-3… (Outdoor) 2 – (Indoor) 2-1, 2-2, 2-3…
These numbers are necessary for later maintenance. Please be sure to indicate them.
Checking the indoor unit addresses
Use the remote controller to check the indoor unit address.
<If 1 indoor unit is connected to 1 remote controller>
1. Press and hold the button and button for 4 seconds or longer (simple settings mode).
2. The address is displayed for the indoor unit that is connected to the remote controller.
(Only the address of the indoor unit that is connected to the remote controller can be checked.)
3. Press the button again to return to normal remote controller mode.
<If multiple indoor units are connected to 1 remote controller (group control)>
1. Press and hold the button and button for 4 seconds or longer (simple settings mode).
2. “ALL” is displayed on the remote controller.
3. Next, press the button.
4. The address is displayed for 1 of the indoor units which is connected to the remote controller. Check that the fan of that indoor
unit starts and that air is discharged.
5. Press the button again and check the address of each indoor unit in sequence.
6. Press the button again to return to normal remote controller mode.
8-5. Remote Controller Test Run Settings
1. Press the remote controller button for 4 seconds or longer. Then press the button.
“TEST RUN” appears on the LCD display while the test run is in progress.
The temperature cannot be adjusted when in Test Run mode.
(This mode places a heavy load on the machines. Therefore use it only when performing the test run.)
2. The test run can be performed using the HEAT, COOL, or FAN operation modes.
Note: The outdoor units will not operate for approximately 3 minutes after the power is turned ON and after operation is
stopped.
3. If correct operation is not possible, a code is displayed on the remote controller LCD display.
(Refer to “Table of Self-Diagnostic Functions” and correct the problem.)
4. After the test run is completed, press the button again. Check that “TEST RUN” disappears from the LCD display.
(To prevent continuous test runs, this remote controller includes a timer function that cancels the test run after 60 minutes.)
* If the test run is performed using the wired remote controller, operation is possible even if the cassette-type ceiling panel has not
been installed. (“P09” display does not occur.)
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 80
Number changes to indicate which indoor unit is currently selected.
Page 81
81
This outdoor unit cannot
collect more than the rated
refrigerant amount as shown
by the nameplate on the back.
If the amount of refrigerant is
more than that recommended,
do not conduct pump down. In
this case use another
refrigerant collecting system.
8-6. Caution for Pump Down
Pump down means refrigerant gas in the system is returned
to the outdoor unit. Pump down is used when the unit is to
be moved, or before servicing the refrigerant circuit.
(Refer to the Service Manual)
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 81
CAUTION
Page 82
8-7. Meaning of Alarm Messages
Table of Self-Diagnostics Functions and Description of Alarm Displays
Alarm messages are indicated by the blinking of LED 1 and 2 (D72, D75) on the outdoor unit PCB. They are also displayed on
the wired remote controller.
Viewing the LED 1 and 2 (D72 and D75) alarm displays
82
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 82
LED 1
Alternating
( : Blinking)
LED 2
Alarm display LED 1 blinks M times, then LED 2 blinks N times. The cycle then repeats. M = 2: P alarm 3: H alarm 4: E alarm 5: F alarm 6: L alarm N = Alarm No.
Example: LED 1 blinks 2 times, then LED 2 blinks 17 times. The cycle then repeats.
Alarm is "P17."
Connect the outdoor maintenance remote controller to the RC socket on the outdoor main unit control PCB (3P, b l ue), and check the Alarm Messages on the remote controller display.
Possible cause of malfunction
Serial communication errors Mis-setting
Remote controller is detecting error signal from indoor unit.
Indoor unit is detecting error signal from remote controller (and system controller).
Indoor unit is detecting error signal from main outdoor unit.
Improper setting of indoor unit or remote controller.
During auto address setting,
number of connected units does not correspond to number set.
When turning on the power supply, number of connected units does number set.
(Except R.C. address is “0.”)
Indoor unit communication error of group control wiring.
Improper setting.
not correspond to
Error in receivi (Signal from main indoor unit in case of group control) Ex: Auto address is not completed.
Error in transmitting serial communication signal.
Error in receiving serial communication signal. When turning on the power supply, the number of connected
indoor units does n
address is “0.”)
Error of the main outdoor unit in receiving serial communication signal from the indoor unit.
Indoor unit address setting is duplicated.
Remote controller address connector (RCU. ADR) is duplicated. (Duplication of main remote controller)
Starting auto address setting is prohibited. This alarm message shows that the auto address connector CN100
is shorted while other RC line is executing auto address operation. Error in auto address setting. (Number of connected indoor units
is less than the number set.) Error in auto address
is more than the number set.)
No indoor unit is connected during auto address setting.
Main outdoor unit is detecting error signal from sub outdoor unit.
Error of outdoor unit address setting.
The number of connected main and sub outdoor units do not correspond to the number set at main outdoor unit PCB.
Error of sub outdoor unit in receiving serial communication signal from main outdoor unit.
Error of main indoor un
from sub indoor units. This alarm message shows when an indoor unit for multiple-use
is not connected to the outdoor unit.
Duplication of main indoor unit address setting in group control.
Duplication of outdoor R.C. address setting.
There are 2 or more indoor unit controllers that have operation mode priority in refrigerant circuit.
Group control wiring is connected to individual control indoor unit.
Indoor unit address is not set.
Capacity code of indoor unit is not set.
Capacity code of outdoor unit is not set.
Mis-matched connection of outdoor units that have different kinds of refrigerant.
4-way valve operation failure
Alarm contents
ng serial communication signal.
ot correspond to the number set. (Except R.C.
setting. (N umber of connected indoor units
it in receiving serial communication signal
Priority set remote
Non-priority set remote
controller
controller
Alarm
message
<E01>
<E02>
<<E03>>
<E06>
<<E09>>
<L03>
<<L09>>
Continued
E04
E08
E12
E15
E16
E20
E24
E25
E26
E29
E18
L02
L04
L05
L06
L07
L08
L10
L17
L18
Page 83
83
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 83
Possible cause of malfunction
Activation of protective device
Thermistor fault
EEP ROM on indoor unit PCB failure
Protective device for compressor is activated
Protective device in indoor unit is activated.
Protective device in outdoor unit is activated.
Indoor thermistor is either open or damaged.
Outdoor thermistor is either open or damaged.
Protective device for compressor No. 1 is activated.
Protective device for compressor No. 2 is activated.
Protective device for compressor No. 3 is activated.
Low oil level.
Oil sensor fault. (Disconnection, etc.)
Thermal protector in indoor unit fan motor is activated.
Improper wiring connections of ceiling panel. Float switch is activated.
Operation of protective function of fan inverter.
Compressor thermal protector is activated. Power supply voltage is unusual. (The voltage is more than 260 V or less than 160 V between L1 and L2 phase.)
Incorrect discharge temperature. (Comp. No. 1)
High pressure switch i
s activated.
Negative (defective) phase.
2
O
sensor (detects low oxygen level) activated
Compressor running failure resulting from missing phase i
n the
compressor wiring, etc. (Start failure not caused by IPM or no gas.)
Incorrect discharge temperature. (Comp. No. 2)
Compressor 3 discharge temp. failure
Outdoor unit fan motor is unusual.
Overcurrent at time of compressor runs more than 80Hz (DCCT secondary current or ACCT primary current is detected at a time other than when IPM has tripped.)
IPM trip (IPM current or temperature)
Inverter for compressor is unusual. (DC compressor does not operate.)
Indoor coil temp. sensor (E1)
Indoor coil temp. sensor (E2) Indoor coil temp. sensor (E3) Indoor suction air (room) temp. sensor (TA)
Indoor discharge air temp. sensor (BL)
Comp. No. 1 discharge gas temp. sens
or (DISCH1)
Comp. No. 2 discharge gas temp. sensor (DISCH2)
Outdoor No. 1 coil gas temp. sensor Outdoor No. 1 coil liquid temp. sensor
(EXG1)
(EXL1) Outdoor air temp. sensor (AIR TEMP) Compressor intake port temperature sensor (RDT)
High pressure sensor. Negative (defective) N phase.
Low-pressure sensor failure
Compressor 3 discharge temp. sensor failure (DISCH3)
Outdoor No. 2 coil gas temp. sensor (EXG2)
Outdoor No. 2 coil liquid temp. sensor (EXL2)
EEP ROM on the main or sub outdoor unit PCB has failed. Current is not detected when comp. No. 1 is ON.
Discharge gas temperature of the comp. No. 1 is not detected. Te mp . s
ensor is not seated at the sensor holder.
Overload current is detected.
Lock current is detected.
Current is
not detected when comp. No. 2 is ON.
Discharge gas temperature of comp. No. 2 is not detected.
Compressor No. 3 current trouble (overcurrent) Compressor No. 3 current trouble (locked) Compressor No. 3 CT sensor disconnected or short circuit
Compressor No. 3 discharge temp. s
ensor disconnected
Low pressure switch is activated.
Comp. No. 1 oil sensor Comp. No. 2 oil sensor Oil sensor (connection) failure
Alarm
message
<<P01>>
<<P09>>
<<P10>>
P12
P02
P03 P04
P05 P14
P16
P17
P18 P22
P26
H31
P29
<<F01>>
<<F02>> <<F03>>
<<F10>>
<<F11>>
F04 F05
F06 F07
F08 F12 F16
F17
F22
F23
F24
F29
F31 H03
H05
H11 H12 H13 H15
H21 H22
H23
H25 H06
H07 H08 H27
H28
Continued
Page 84
1. Alarm messages in << >> do not affect other indoor unit operations.
2. Alarm messages in < > sometimes affect other indoor unit operations depending on the fault.
84
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 84
Alarm messages displayed on system controller
Serial communication errors
Mis-setting
Activation of protective device
Error in transmitting serial communication signal
Error in receiving serial communication signal
Protective device of sub indoor unit in group control is activated.
Indoor or main outdoor unit is not operating correctly. Mis-wiring of control wiring between indoor unit, main outdoor unit
and system controller.
Indoor or main outdoor unit is not operating correctly. Mis-wiring of control wiring between indoor unit, main outdoor unit and system controller. CN1 is not connected properly.
When using wireless remote controller or system controller, in order to check the alarm message in detail, connect wired remote controller to indoor unit temporarily.
NOTE
C05
C06
P30
Page 85
85
X
<How to remove the filter>
1. Use a screwdriver to remove the bolt screw on each side for the two latches. (Be sure to
reattach the two bolt screws after cleaning.)
2. Press on the two latches of the air intake grille with your thumbs in the direction of the
arrow to open the grille.
3. Open the air intake grille downward.
9. APPENDIX
9-1. 4-Way Air Discharge Semi-Concealed Type (X Type)
NAME OF PARTS
CARE AND CLEANING
1. For safety, be sure to turn the air conditioner off and also to disconnect the power before cleaning.
2. Do not pour water on the indoor unit to clean it. This will damage the internal compo­nents and cause an electric shock hazard.
1. Never use solvents or harsh chemicals when cleaning the indoor unit. Do not wipe plastic parts using very hot water.
2. Some metal edges and the fins are sharp and may cause injury if handled improperly; be especially careful when you clean these parts.
3. The internal coil and other components of the outdoor unit must be cleaned every year. Consult your dealer or service center.
Air intake and outlet side Clean the air intake and outlet side of the indoor unit with a vacuum cleaner brush, or wipe them
(Indoor unit) with a clean, soft cloth.
If these parts are stained, use a clean cloth moistened with a mild liquid detergent. When clean­ing the air outlet side, be careful not to force the vanes out of place.
Air filter
The air filter collects dust and other particles from the air and should be cleaned at regular intervals as indicated in the table below or when the filter indication ( ) on the display of the remote control unit (wired type) shows that the filter needs cleaning. If the filter gets blocked, the efficiency of the air conditioner drops greatly.
<How to clean the filter>
1. Remove the air filter from the air intake grille.
2. Use a vacuum cleaner to remove light dust. If there is sticky dust on the filter, wash the fil-
ter in lukewarm, soapy water, rinse it in clean water, and dry it.
Type Period
X 6 months
The frequency with which the filter should be cleaned depends on the environment in which the unit is used.
When cleaning the air filter, never remove the safety chain. If it is necessary to remove it
for servicing and maintenance inside, be sure to reinstall the safety chain securely (hook on the grille side) after the work.
When the filter has been removed, rotating parts (such as the fan), electrically charged
areas, etc. will be exposed in the unit’s opening. Bear in mind the dangers that these parts and areas pose, and proceed with the work carefully.
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 85
X type (4-WAY)
WARNING
CAUTION
Water drain
Ceiling panel (optional)
Air outlet (4 locations)
Air intake grille (air intake)
NOTE
CAUTION
Page 86
86
X
4. Remove the air filter attached to the air intake grille.
Care: After a prolonged idle period
Care: Before a prolonged idle period
Check the indoor and outdoor unit air intakes and outlets for blockage; if there is a blockage, remove it.
• Operate the fan for half a day to dry out the inside.
• Disconnect the power supply and also turn off the circuit breaker.
• Clean the air filter and replace it in its original position.
• Outdoor unit internal components must be checked and cleaned periodically. Con­tact your local dealer for this service.
1. Certain metal edges and the condenser fins are sharp and may cause injury if handled improperly; special care should be taken when you clean these parts.
2. Periodically check the outdoor unit to see if the air outlet or air intake is clogged with dirt or soot.
3. The internal coil and other components of the outdoor unit must also be cleaned periodi­cally. Consult your dealer or service center.
TROUBLESHOOTING
If your air conditioner does not work properly, first check the following points before requesting service. If it still does not work properly, contact your dealer or a service center.
Tips for Energy Saving
Avoid
Do
Do not block the air intake and outlet of the unit. If either is obstructed, the unit will not work well, and may be damaged.
• Do not let direct sunlight into the room. Use sunshades, blinds or curtains. If the walls and ceiling of the room are warmed by the sun, it will take longer to cool the room.
• Always try to keep the air filter clean. (Refer to “Care and Cleaning.”) A clogged filter will impair the performance of the unit.
• To prevent conditioned air from escaping, keep windows, doors and any other openings closed.
Should the power fail while the unit is running
If the power supply for this unit is temporarily cut off, the unit will automatically resume operation once power is restored using the same settings before the power was interrupted.
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 86
Latch
Air intake grille
Bolt screws
Safety chain
Air filter
CAUTION
Air conditioner does not run at all 1. Power failure. 1.
Tro uble
Compressor runs but soon stops 1. Obstruction in front of condenser coil 1. Remove obstruction
oor cooling (or heating)
P
performance
2. Leakage circuit breaker has
3. Li ne voltage is too low.
4. Operation button is turned off.
5. The wired remote control unit or malfunctioning.
(
The inspection mark and the
H, L, P in
the LCD of the wired
on
1. Dirty or clogged air filter.
2. Heat source or many people in
3. Doors and/or windows are open.
4. Obstacle near air intake or air
5. Thermostat is set too high for (or too low for heating).
6. (Defrosting system does not work.)
Possible Cause
tripped.
heat pump is
letters E, F,
combination with numbers
remote control unit.)
room.
discharge port.
cooling
appear
Remedy
After a power outage, press ON/ OFF operation button
on the
2. Contact service center.
3. Co nsult your electrician or dealer.
4. Press the button again.
5. Consult your dealer.
1. Clean air filter to improve the
2. Eliminate heat source if possible.
3. Shut them to keep the heat (or
4. Remove it to ensure good airflow.
5. Set the temperature lower (or
6. (Consult your dealer.)
wired remote control unit.
airflow.
cold) out.
higher).
NOTE
Page 87
A
9-2. 1-Way Air Discharge Semi-Concealed Type (A Type)
NAME OF PARTS
CARE AND CLEANING
1. For safety, be sure to turn the air conditioner off and also to disconnect the power before cleaning.
2. Do not pour water on the indoor unit to clean it. This will damage the internal compo­nents and cause an electric shock hazard.
1. Never use solvents or harsh chemicals when cleaning the indoor unit. Do not wipe plastic parts using very hot water.
2. Some metal edges and the fins are sharp and may cause injury if handled improperly; be especially careful when you clean these parts.
3. The internal coil and other components of the outdoor unit must be cleaned every year. Consult your dealer or service center.
Air intake and outlet side Clean the air intake and outlet side of the indoor unit with a vacuum cleaner brush, or wipe them
(Indoor unit) with a clean, soft cloth.
If these parts are stained, use a clean cloth moistened with a mild liquid detergent. When cleaning the air outlet side, be careful not to force the vanes out of place.
<How to clean the filter>
1. Remove the air filter from the air intake grille.
2. Use a vacuum cleaner to remove light dust. If there is sticky dust on the filter,
wash the filter in lukewarm, soapy water, rinse it in clean water, and dry it.
Type A
Period 2 weeks
The frequency with which the filter should be cleaned depends on the environment in which the unit is used.
Air filter
The air filter collects dust and other particles from the air and should be cleaned at regular intervals as indicated in the table below or when the filter indication ( ) on the display of the remote control unit (wired type) shows that the filter needs cleaning. If the filter gets blocked, the efficiency of the air conditioner drops greatly.
<How to remove the filter> 1-way air discharge semi-concealed type (A):
87
1. Take hold of the finger-hold on the air intake grille and press it to
the rear, and the grille will open downward.
2. Take hold of the finger-hold on the air filter, pull it toward you.
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 87
SEMI-CONCEALED
A type (1-WAY)
Wa ter dra i n
Air outlet
Air intake
Ceiling panel (optional)
WARNING
CAUTION
NOTE
Air filter finger-hold
Air intake grill
Air filter
Slide
Latch
Air filter finger-hold
*Take hold of the finger-hold on the air filter, pull it toward you.
Hook
Screw
Screw
Page 88
88
A
Care: After a prolonged idle period
Care: Before a prolonged idle period
Check the indoor and outdoor unit air intakes and outlets for blockage; if there is a blockage, remove it.
• Operate the fan for half a day to dry out the inside.
• Disconnect the power supply and also turn off the circuit breaker.
• Clean the air filter and replace it in its original position.
• Outdoor unit internal components must be checked and cleaned periodically. Contact your local dealer for this service.
1. Certain metal edges and the condenser fins are sharp and may cause injury if handled improperly; special care should be taken when you clean these parts.
2. Periodically check the outdoor unit to see if the air outlet or air intake is clogged with dirt or soot.
3. The internal coil and other components of the outdoor unit must also be cleaned periodically. Consult your dealer or service center.
Outdoor unit
TROUBLESHOOTING
If your air conditioner does not work properly, first check the following points before requesting service. If it still does not work properly, contact your dealer or a service center.
Tips for Energy Saving
Avoid
Do
Do not block the air intake and outlet of the unit. If either is obstructed, the unit will not work well, and may be damaged.
• Do not let direct sunlight into the room. Use sunshades, blinds or curtains. If the walls and ceiling of the room are warmed by the sun, it will take longer to cool the room.
• Always try to keep the air filter clean. (Refer to “Care and Cleaning.”) A clogged filter will impair the performance of the unit.
• To prevent conditioned air from escaping, keep windows, doors and any other openings closed.
Should the power fail while the unit is running
If the power supply for this unit is temporarily cut off, the unit will automatically resume operation once power is restored using the same settings before the power was interrupted.
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 88
CAUTION
Tro uble
Air conditioner does not run at all 1. Power failure. 1.
Compressor runs but soon stops 1. Obstruction in front of condenser coil 1. Remove obstruction
oor cooling (or heating)
P
performance
2. Leakage circuit breaker has
3. Li ne voltage is too low.
4. Operation button is turned off.
5. The wired remote control unit or malfunctioning.
(
The inspection mark and the
H, L, P in
the LCD of the wired
on
1. Dirty or clogged air filter.
2. Heat source or many people in
3. Doors and/or windows are open.
4. Obstacle near air intake or air
5. Thermostat is set too high for (or too low for heating).
6. (Defrosting system does not work.)
Possible Cause
tripped.
heat pump is
letters E, F,
combination with numbers
remote control unit.)
room.
discharge port.
cooling
appear
Remedy
After a power outage, press ON/ OFF operation button
on the
2. Contact service center.
3. Co nsult your electrician or dealer.
4. Press the button again.
5. Consult your dealer.
1. Clean air filter to improve the
2. Eliminate heat source if possible.
3. Shut them to keep the heat (or
4. Remove it to ensure good airflow.
5. Set the temperature lower (or
6. (Consult your dealer.)
wired remote control unit.
airflow.
cold) out.
higher).
NOTE
Page 89
89
U
D
9-3. Concealed Duct (High-Static Pressure) Type (U, D Type)
NAME OF PARTS
CARE AND CLEANING
1. For safety, be sure to turn the air conditioner off and also to disconnect the power before cleaning.
2. Do not pour water on the indoor unit to clean it. This will damage the internal compo­nents and cause an electric shock hazard.
1. Never use solvents or harsh chemicals when cleaning the indoor unit. Do not wipe plastic parts using very hot water.
2. Some metal edges and the fins are sharp and may cause injury if handled improperly; be especially careful when you clean these parts.
3. The internal coil and other components of the outdoor unit must be cleaned every year. Consult your dealer or service center.
Air intake and outlet side Clean the air intake and outlet side of the indoor unit with a vacuum cleaner brush, or wipe them
(Indoor unit) with a clean, soft cloth.
If these parts are stained, use a clean cloth moistened with a mild liquid detergent. When clean­ing the air outlet side, be careful not to force the vanes out of place.
<How to clean the filter>
1. Remove the air filter from the air intake grille.
2. Use a vacuum cleaner to remove light dust. If there is sticky dust on the filter, wash the filter in lukewarm, soapy water,
rinse it in clean water, and dry it.
Type Period
U, D* (Depends on filter
specifications)
The frequency with which the filter should be cleaned depends on the environment in which the unit is used.
*Concealed duct type (U, D):
An air filter is not provided with this air conditioner at the time of shipment. To get clean air and to extend the service life of the air conditioner, an air filter must be installed in the air intake. For installation and cleaning the air filter, consult your dealer or service center.
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 89
CONCEALED DUCT
U type (standard static pressure
)
Flexible duct (optional)
Air outlet grille (optional)
WARNING
Water d rain
Canvas duct (optional)
Air intake grille (air intake) (optional)
CONCEALED DUCT
D type (high static pressure)
Air intake sideduct flange (rear)
Water drain
Electrical box
Air outlet side duct flange
CAUTION
NOTE
Page 90
90
U
D
TROUBLESHOOTING
If your air conditioner does not work properly, first check the following points before requesting service. If it still does not work properly, contact your dealer or a service center.
Tips for Energy Saving
Avoid
Do
Do not block the air intake and outlet of the unit. If either is obstructed, the unit will not work well, and may be damaged.
• Do not let direct sunlight into the room. Use sunshades, blinds or curtains. If the walls and ceiling of the room are warmed by the sun, it will take longer to cool the room.
• Always try to keep the air filter clean. (Refer to “Care and Cleaning.”) A clogged filter will impair the performance of the unit.
• To prevent conditioned air from escaping, keep windows, doors and any other openings closed.
Should the power fail while the unit is running
If the power supply for this unit is temporarily cut off, the unit will automatically resume operation once power is restored using the same settings before the power was interrupted.
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 90
Tro uble
Air conditioner does not run at all 1. Power failure. 1.
2. Leakage circuit breaker has
3. Li ne voltage is too low.
Compressor runs but soon stops 1. Obstruction in front of condenser coil 1. Remove obstruction
oor cooling (or heating)
P
performance
4. Operation button is turned off.
5. The wired remote control unit or malfunctioning.
(
The inspection mark and the
H, L, P in
the LCD of the wired
on
1. Dirty or clogged air filter.
2. Heat source or many people in
3. Doors and/or windows are open.
4. Obstacle near air intake or air
5. Thermostat is set too high for (or too low for heating).
6. (Defrosting system does not work.)
Possible Cause
tripped.
heat pump is
letters E, F,
combination with numbers
remote control unit.)
room.
discharge port.
cooling
appear
Remedy
After a power outage, press ON/ OFF operation button
on the
2. Contact service center.
3. Co nsult your electrician or dealer.
4. Press the button again.
5. Consult your dealer.
1. Clean air filter to improve the
2. Eliminate heat source if possible.
3. Shut them to keep the heat (or
4. Remove it to ensure good airflow.
5. Set the temperature lower (or
6. (Consult your dealer.)
wired remote control unit.
airflow.
cold) out.
higher).
NOTE
Page 91
T
<How to remove the filter>
1. Take hold of the finger-hold on
the air intake grille and press it to the rear, and the grille will open downward.
2. Take hold of the finger-hold on
the air filter, pull it toward you.
9-4. Ceiling-Mounted Type (T Type)
NAME OF PARTS
CARE AND CLEANING
1. For safety, be sure to turn the air conditioner off and also to disconnect the power before cleaning.
2. Do not pour water on the indoor unit to clean it. This will damage the internal components and cause an electric shock hazard.
1. Never use solvents or harsh chemicals when cleaning the indoor unit. Do not wipe plastic
parts using very hot water.
2. Some metal edges and the fins are sharp and may cause injury if handled improperly; be
especially careful when you clean these parts.
3. The internal coil and other components of the outdoor unit must be cleaned every year.
Consult your dealer or service center.
Air intake and outlet side Clean the air intake and outlet side of the indoor unit with a vacuum cleaner brush, or wipe them
(Indoor unit) with a clean, soft cloth.
If these parts are stained, use a clean cloth moistened with a mild liquid detergent. When clean­ing the air outlet side, be careful not to force the vanes out of place.
Air filter
The air filter collects dust and other particles from the air and should be cleaned at regular intervals as indicated in the table below or when the filter indication ( ) on the display of the remote control unit (wired type) shows that the filter needs cleaning. If the filter gets blocked, the efficiency of the air conditioner drops greatly.
<How to clean the filter>
Type Period
T 2 weeks
The frequency with which the filter should be cleaned depends on the environment in which the unit is used.
91
1. Remove the air filter from the air intake
grille.
2. Use a vacuum cleaner to remove light
dust. If there is sticky dust on the filter, wash the filter in lukewarm, soapy water, rinse it in clean water, and dry it.
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 91
T ty
pe
CEILING-MOUNTED
Air outlet
Water dra in
(Drain pipe can be connected to either the left or right side.)
Air intake grille (air intake)
WARNING
CAUTION
NOTE
Air intake grill finger-hold
Screw
Air filter
Hook
Screw
Air filter finger-hold * Take hold of the finger-hold on the air filter, pull it toward you.
Latch
Air filter finger-hold
Air intake grill
Slide
Page 92
92
T
Care: After a prolonged idle period
Care: Before a prolonged idle period
Check the indoor and outdoor unit air intakes and outlets for blockage; if there is a blockage, remove it.
• Operate the fan for half a day to dry out the inside.
• Disconnect the power supply and also turn off the circuit breaker.
• Clean the air filter and replace it in its original position.
• Outdoor unit internal components must be checked and cleaned periodically. Con­tact your local dealer for this service.
1. Certain metal edges and the condenser fins are sharp and may cause injury if handled improperly; special care should be taken when you clean these parts.
2. Periodically check the outdoor unit to see if the air outlet or air intake is clogged with dirt or soot.
3. The internal coil and other components of the outdoor unit must also be cleaned periodi­cally. Consult your dealer or service center.
TROUBLESHOOTING
If your air conditioner does not work properly, first check the following points before requesting service. If it still does not work properly, contact your dealer or a service center.
Tips for Energy Saving
Avoid
Do
• Do not block the air intake and outlet of the unit. If either is obstructed, the unit will not work well, and may be damaged.
• Do not let direct sunlight into the room. Use sunshades, blinds or curtains. If the walls and ceiling of the room are warmed by the sun, it will take longer to cool the room.
• Always try to keep the air filter clean. (Refer to “Care and Cleaning.”) A clogged filter will impair the performance of the unit.
• To prevent conditioned air from escaping, keep windows, doors and any other openings closed.
Should the power fail while the unit is running
If the power supply for this unit is temporarily cut off, the unit will automatically resume operation once power is restored using the same settings before the power was interrupted.
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 92
CAUTION
Tro uble
Air conditioner does not run at all 1. Power failure. 1.
Compressor runs but soon stops 1. Obstruction in front of condenser coil 1. Remove obstruction
oor cooling (or heating)
P
performance
2. Leakage circuit breaker has
3. Li ne voltage is too low.
4. Operation button is turned off.
5. The wired remote control unit or malfunctioning.
(
The inspection mark and the
H, L, P in
the LCD of the wired
on
1. Dirty or clogged air filter.
2. Heat source or many people in
3. Doors and/or windows are open.
4. Obstacle near air intake or air
5. Thermostat is set too high for (or too low for heating).
6. (Defrosting system does not work.)
Possible Cause
tripped.
heat pump is
letters E, F,
combination with numbers
remote control unit.)
room.
discharge port.
cooling
appear
Remedy
After a power outage, press ON/ OFF operation button
on the
2. Contact service center.
3. Co nsult your electrician or dealer.
4. Press the button again.
5. Consult your dealer.
1. Clean air filter to improve the
2. Eliminate heat source if possible.
3. Shut them to keep the heat (or
4. Remove it to ensure good airflow.
5. Set the temperature lower (or
6. (Consult your dealer.)
wired remote control unit.
airflow.
cold) out.
higher).
NOTE
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93
K
<How to remove the filter>
1. Move the flap on the air outlet grille to its lowest position with the remote control unit.
2. The filter is disengaged by pushing the tab up gently. Hold the air filter by the tab at the bottom,
and pull downward.
When replacing the filter, make sure that the FRONT mark is facing you. Push it up until you hear it click back into position.
9-5. Wall-Mounted Type (K Type)
NAME OF PARTS
CARE AND CLEANING
Air intake and outlet side Clean the air intake and outlet side of the indoor unit with a vacuum cleaner brush, or wipe them
(Indoor unit) with a clean, soft cloth.
If these parts are stained, use a clean cloth moistened with a mild liquid detergent. When clean­ing the air outlet side, be careful not to force the vanes out of place.
Air filter
The air filter collects dust and other particles from the air and should be cleaned at regular intervals as indicated in the table below or when the filter indication ( ) on the display of the remote control unit (wired type) shows that the filter needs cleaning. If the filter gets blocked, the efficiency of the air conditioner drops greatly.
<How to clean the filter>
1. Remove the air filter from the air intake grille.
2. Use a vacuum cleaner to remove light dust. If there is sticky dust on the filter, wash the filter in
lukewarm, soapy water, rinse it in clean water, and dry it.
Type Period
K 2 weeks
The frequency with which the filter should be cleaned depends on the environment in which the unit is used.
1. For safety, be sure to turn the air conditioner off and also to disconnect the power before cleaning.
2. Do not pour water on the indoor unit to clean it. This will damage the internal compo­nents and cause an electric shock hazard.
1. Never use solvents or harsh chemicals when cleaning the indoor unit. Do not wipe plastic parts using very hot water.
2. Some meta l edges and the fins are sharp and may cause injury if handled improperly; be especially careful when you clean these parts.
3. The internal coil and other components of the outdoor unit must be cleaned every year. Consult your dealer or service center.
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 93
K Type (Wall-Mounted)
WARNING
Air intake
Air outlet
CAUTION
NOTE
Air intake grille
Air filter
Page 94
94
K
Care: After a prolonged idle period
Care: Before a prolonged idle period
Check the indoor and outdoor unit air intakes and outlets for blockage; if there is a blockage, remove it.
• Operate the fan for half a day to dry out the inside.
• Disconnect the power supply and also turn off the circuit breaker.
• Clean the air filter and replace it in its original position.
• Outdoor unit internal components must be checked and cleaned periodically. Con­tact your local dealer for this service.
TROUBLESHOOTING
If your air conditioner does not work properly, first check the following points before requesting service. If it still does not work properly, contact your dealer or a service center.
Tips for Energy Saving
Avoid
Do
• Do not block the air intake and outlet of the unit. If either is obstructed, the unit will not work well, and may be damaged.
• Do not let direct sunlight into the room. Use sunshades, blinds or curtains. If the walls and ceiling of the room are warmed by the sun, it will take longer to cool the room.
• Always try to keep the air filter clean. (Refer to “Care and Cleaning.”) A clogged filter will impair the performance of the unit.
• To prevent conditioned air from escaping, keep windows, doors and any other openings closed.
Should the power fail while the unit is running
If the power supply for this unit is temporarily cut off, the unit will automatically resume operation once power is restored using the same settings before the power was interrupted.
1. Certain metal edges and the condenser fins are sharp and may cause injury if handled improperly; special care should be taken when you clean these parts.
2. Periodically check the outdoor unit to see if the air outlet or air intake is clogged with dirt or soot.
3. The internal coil and other components of the outdoor unit must also be cleaned periodi­cally. Consult your dealer or service center.
07-007 W-2WAY_II_NA 1/23/07 6:09 PM Page 94
CAUTION
Tro uble
Air conditioner does not run at all 1. Power failure. 1.
Compressor runs but soon stops 1. Obstruction in front of condenser coil 1. Remove obstruction
oor cooling (or heating)
P
performance
2. Leakage circuit breaker has
3. Li ne voltage is too low.
4. Operation button is turned off.
5. The wired remote control unit or malfunctioning.
(
The inspection mark and the
H, L, P in
the LCD of the wired
on
1. Dirty or clogged air filter.
2. Heat source or many people in
3. Doors and/or windows are open.
4. Obstacle near air intake or air
5. Thermostat is set too high for (or too low for heating).
6. (Defrosting system does not work.)
Possible Cause
tripped.
heat pump is
letters E, F,
combination with numbers
remote control unit.)
room.
discharge port.
cooling
appear
Remedy
After a power outage, press ON/ OFF operation button
on the
2. Contact service center.
3. Co nsult your electrician or dealer.
4. Press the button again.
5. Consult your dealer.
1. Clean air filter to improve the
2. Eliminate heat source if possible.
3. Shut them to keep the heat (or
4. Remove it to ensure good airflow.
5. Set the temperature lower (or
6. (Consult your dealer.)
wired remote control unit.
airflow.
cold) out.
higher).
NOTE
Page 95
Page 96
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