Sanyo AHX0952 User Manual

 R410A Models

Indoor Units

INSTALLATION INSTRUCTIONS

– Mini ECO-i System Air Conditioner –

for Refrigerant R410A

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

T Ceiling-Mounted Type THX1252 THX1852 THX2452

K Wall-Mounted Type KHX0752 KHX0952 KHX1252 KHX1852 KHX2452

Concealed Duct

High-Static Pressure Type

DHX3652 DHX4852

Outdoor Units

Class 36 60

C Mini ECO-i CHX03652 CHX06052

* Refrigerant R410A is used in the outdoor units.

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

85464359981002 ©SANYO 2006 SANYO Electric Co., Ltd.

Gunma, Japan

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.



This product is intended for professional use. Permission from the power supplier is required when installing an outdoor unit that is connected to a 16 A distribution network.



Pay close attention to all warning and caution notices given in this manual.

This symbol refers to a hazard or

WARNING

CAUTION

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

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.

WARNING

• 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 Wiring

ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJURY OR DEATH. ONLY A QUALIFIED, EXPERIENCED ELECTRICIAN SHOULD ATTEMPT TO WIRE THIS SYSTEM.

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

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.

CAUTION

• 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.

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 (oz)

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.

NOTE

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:

e.g., charged amount (353 oz)

Indoor unit

Room A Room B Room C Room D Room E Room F

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.

(ISO 5149).

Outdoor unit

e.g., charged amount (529 oz)

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).

Outdoor unit

Refrigerant tubing

Indoor unit

(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.

Refrigerant tubing

Outdoor unit

Very small room

Small room

Mechanical ventilation device – Gas leak detector

Medium room

Large room

Indoor unit

3. The minimum indoor floor space compared with the amount of refrigerant is roughly as follows (when the ceiling is 8.8 ft. high):

ft.

4000

Range below the density limit of

0.3 oz/ft. (countermeasures not needed)

500

Range above the density limit of

0.3 oz/ft. (countermeasures needed)

400200 600 800 1000 1200

Total amount of refrigerant

Min. indoor volume

3500

3000

2500

2000

1500

1000

454

398

341

284

227

170

114

ft.

Min. indoor floor area

(when the ceiling is 8.8 ft. high)

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.”

 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.

Use sufficient care in handling the tubing. Seal the tubing ends with

CAUTION

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) 5/128 (1.0)

1-2. Prevent impurities including water, dust and oxide from entering the tubing. Impurities can cause R410A

refrigerant 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.

caps or tape to prevent dirt, moisture, or other foreign substances from entering. These substances can result in system malfunction.

Unit: in. (mm)

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 of the unit.

2-2. Since refrigerant composition changes and performance decreases when gas leaks, collect the remaining

refrigerant 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.

Item compatible Remarks

Manifold gauge Yes No Types of refrigerant, refrigerating machine oil, and

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

Leak detector Yes No Leak detectors for CFC and HCFC that

Flaring oil Yes No For systems that use R22, apply mineral oil (Suniso oil)

New tool?

R407C tools

with R410A?

pressure gauge are different.

with a check valve. If it has no check valve, purchase and attach a vacuum pump adapter.

react to chlorine do not function because R410A contains no chlorine. Leak detector for HFC134a can be used for R410A.

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.

Manifold gauge

Vacuum pump

Outlet Inlet

* Using tools for R22 and R407C and new tools for R410A together can cause defects.

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.

Valve

Liquid

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)

R410A

CONTENTS

Page

IMPORTANT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Please Read Before Starting

Check of Density Limit

Precautions for Installation Using New Refrigerant

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 Size 1-6. Straight Equivalent Length of Joints 1-7. Additional Refrigerant Charge 1-8. System Limitations 1-9. Tubing Length 1-10. Check of Limit Density 1-11. Installing Distribution Joint 1-12. Optional Distribution Joint Kit 1-13. Example of Tubing Size Selection and

Refrigerant Charge Amount

2. SELECTING THE INSTALLATION SITE . . . . . 17

2-1. Indoor Unit 2-2. Outdoor Unit 2-3. Air-Discharge Chamber for Top Discharge 2-4. Installing the Unit in Heavy Snow Areas 2-5. Precautions for Installation in Heavy Snow

Areas 2-6. Dimensions of Air-Discharge Chamber 2-7. Dimensions of Outdoor Unit with

Air-Discharge Chamber (field supply) 2-8. Dimensions of Snow Ducting 2-9. Dimensions of Outdoor Unit with Snow-Proof

Ducting (field supply)

3. HOW TO INSTALL THE INDOOR UNIT . . . . . 25

 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

Page

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 . . . 56

4-1. Installing the Outdoor Unit 4-2. Drainage Work 4-3. Routing the Tubing and Wiring

5. ELECTRICAL WIRING . . . . . . . . . . . . . . . . . . 57

5-1. General Precautions on Wiring 5-2. Recommended Wire Length and Wire

Diameter for Power Supply System 5-3. Wiring System Diagram

Page

6. HOW TO PROCESS TUBING . . . . . . . . . . . . 61

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 . . . . . . . . . . . . . . . . . . . . . . . . . 65

 Air Purging with a Vacuum Pump (for Test Run)

Preparation

8. TEST RUN . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

8-1. Preparing for Test Run 8-2. Test Run Procedure 8-3. Outdoor Unit PCB Setting 8-4. Auto Address Setting 8-5. Caution for Pump Down 8-6. Meaning of Alarm Messages

9. APPENDIX . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

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)

1. GENERAL

1-3. Type of Copper Tube and Insulation Material

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.

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)

1-2. Accessories Supplied

See Tables 1-1 – 1-7.

Table 1-1 (Outdoor Unit)

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.

CAUTION

Check local electrical codes and regulations before obtaining wire. Also, check any specified instructions or limitations.

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

Part name

Tube Discharge Assy

Instruction manual paper

Figure

Q’ty

03652 Model

(4 hp)

hp = horsepower

06052 Model

(6 hp)

Table 1-2 (4-Way Air Discharge Semi-Concealed)

Part Name Figure

Full-scale installation diagram

Drain hose

Hose band

Drain insulator

Flare insulator

Insulating tape

Packing

Wiring cover

Screw

Washer

Screw

White (heat-resisting)

Table 1-3 (1-Way Air Discharge Semi-Concealed)

Part Name Figure

Full-scale installation diagram

Drain ho

Hose band

Drain insulator

Flare insulator

Insulating tape

Packing

Washer

Screw

Bushing

White (heat-resisting)

Q’ty

Printed on container box

For securing drain hose

For drain joint

For liquid tube

For gas tube

For gas tube joint

For drain joint

For covering erectrical wiring

For full-scale installation diagram

For suspending indoor unit from ceiling

For fixing the wiring cover

Q’ty

Printed on container box

For securing drain hose

For drain joint

For liquid tube

For gas tube

For gas tube joint

For drain joint

For suspending indoor unit from ceiling

For full-scale installation diagram

For electrical junction box

Remarks

Table 1-4 (Concealed Duct)

Part Name Figure

Drain hose

Hose band1

Packing 1

Drain insulator 1

Flare insulator 1

Insulating tape

Flare insulator 1

Washer

Sealing putty 1

Vinyl clamp 8

 Use 3/8" for suspending bolts.  Field supply for suspending bolts and nuts.

White (heat-resisting)

Q’ty

For securing drain hose

For drain joint

For liquid tube

For gas and liquid tubes flare nuts

For gas tu

For suspending indoor unit from ceiling

For sealing recessed portion of power supply

For flare and drain insulators

Remarks

Table 1-5 (Concealed Duct High-Static Pressure)

Part Name Figure

Washer

Nut

Flare insulator

Drain socket

Q’ty

For suspending indoor unit from ceiling

For gas tube

For liquid tube

For drain pipe connection

Remarks

Table 1-6 (Ceiling-Mounted)

Part Name Figure

Full-scale installation diagram 1

Washer 4

Flare insulator

Insulating tape 2

Vinyl clamp 8

Drain hose1

Hose band2

Drain insulator 1

Gum eyelet 1

T1/8"

T3/16"

White (heat-resisting)

L5-1/2"

Q’ty

Printed on container box

For temporarily suspending indoor unit from ceiling

For gas and liquid tube joints

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

For power supply inlet

Remarks

Table 1-7 (Wall-Mounted)

Tapping screw

Plastic cover

Insulator

Part Name Figure

5/32" × 1"

Q’ty

For fixing the rear panel

For improved tubing appearance

For insulating flare nut (2452 type only)

Remarks

1-5. Tubing Size

Table 1-8 Main Tubing Size (LA)

BTU/h (kW)

System horsepower

Gas tubing

Liquid tubing

38,200 (11.2)

ø5/8" (ø15.88)

ø3/8" (ø9.52)

52,900 (15.5)

ø3/4" (ø19.05)

Unit: in. (mm)

Table 1-9 Main Tubing Size After Distribution (LB, LC...)

Total capacity after distribution

Tubing size

Over BTU/h

Gas tubing

Liquid tubing

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.

24,200 (2.5 hp)–38,200 (4 hp) 47,800 (5 hp) 52,900 (6 hp)Below BTU/h

24,200 (2.5 hp)

ø5/8" (ø15.88)ø1/2" (ø12.7) ø3/4" (ø19.05)

ø3/8" (ø9.52) ø3/8" (ø9.52)

Unit: in. (mm) hp = horsepower

Table 1-10 Indoor Unit Tubing Connection (1, 2...

7 9 12 183624 48Indoor unit type

Gas tubing

Liquid tubing

ø1/4" (ø6.35) ø3/8" (ø9.52)

n–1

)

ø5/8" (ø15.88)ø1/2" (ø12.7)

Unit: in. (mm)

Heat pump unit

(Single-phase)

(oz)

CHX03652

123

CHX06052

123

1-6. Straight Equivalent Length of Joints

Design the tubing system by referring to the following table for the straight equivalent length of joints.

Table 1-11 Straight Equivalent Length of Joints

Gas tubing size (in. (mm))

90° elbow

45° elbow

U-shape tube bend (R2-3/8

Trap bend

Y-branch distribution jointEquivalent length conversion not needed.

Ball valve for service Equivalent length conversion not needed.

" – 4" (60 – 100))

1/2" (12.7)

0.8

7.5

5/8" (15.88)

1.1

0.9

3.4

9.2

Unit: ft.

3/4" (19.05)

1.4

4.1

10.5

Table 1-12 Required Copper Tubing Dimensions Unit: in. (mm)

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)

1-7. Additional Refrigerant Charge

Additional refrigerant charge amount is calculated from the liquid tubing total length as follows.

Table 1-13 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

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.

Table 1-14 Refrigerant Charge Amount at Shipment (for outdoor unit)

1-8. System Limitations

Table 1-15 System Limitations

Outdoor units (Type)

Number of max. connectable indoor units

Max. allowable indoor/outdoor capacity ratio

CHX036526CHX06052

50 – 130%

1-9. Tubing Length

Select the installation location so that the length and size of refrigerant tubing are within the allowable range shown in the figure below.

Main tube of unit

L1 L2

LCLB

1st branch

2 3

n-1

Unit distribution tube

Note: Do not use commercially available T-joints for the liquid tubing.

* Be sure to use special R410A distribution joints (APR: purchased separately) for outdoor

unit connections and tubing branches.

R410A distribution joint APR-P160BA (for indoor unit)

Table 1-16 Ranges that Apply to Refrigerant Tubing Lengths and to Differences in Installation Heights

Items Marks Contents Length (ft.)

131

656

Allowable tubing length

Allowable elevation difference

L1 Max. tubing length

Actual length 492

Equivalent length 574

L (L2 – L3)

...

1, 2

+2+...

n–1

Difference between max. length and min. length from the No.1 distribution joint

Max. length of each distribution tube 98

Total max. tubing length including length of

+L1

each distribution tube (only narrow tubing)

When outdoor unit is installed higher than indoor unit 164

When outdoor unit is installed lower than indoor unit 131

H2 Max. difference between indoor units 49

L = Length, H = Height

WARNING

Always check the gas density limit for the room in which the unit is installed.

Minimum indoor volume & floor area as against the amount of refrigerant is roughly as given in the following table.

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 the 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 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.)

CAUTION

Pay special attention to any location, such as a basement, etc., where leaking refrigerant can accumulate, since refrigerant gas is heavier than air.

ft.

10000

9500

Min. indoor volume

9000

8500 8000

7500 7000 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

Range above the density limit of

0.3 oz/ft. (countermeasures needed)

1000500 1500 2000 2500 3000

Total amount of refrigerant

ft.

1136 1079 1022 966 909 852 795 738 682 625 568 511 454

398 341

284 227 170 114 57

Min. indoor floor area

(when the ceiling is 8.8 ft. high)

Tube branching methods (horizontal use)

15 to 30°

Arrow view

Horizontal line

View as seen from arrow

1-11. Installing Distribution Joint

(1) Refer to “HOW TO ATTACH DISTRIBUTION JOINT”

enclosed with the optional distribution joint kit (APR-P160BA).

(2) In order to prevent accumulation 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 vertical, 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.) (Consult with SANYO separately concerning the ball valve.)

If a trap or ball valve is not added, do not operate the system 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.)

Types of vertical trap specifications

(When using ball valve)

Main tubing

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) (If only 1 unit is connected, a ball valve is also needed on this side.)

Branch tubing is directed upward.

More than 8 in.

Horizontal

Indoor unit

(Each unit is connected to tubing that is either level or is directed downward.)

1-12. Optional Distribution Joint Kit

See the installation instructions packaged with the distribution joint kit for the installation procedure.

Table 1-17

Model name Cooling capacity after distribution Remarks

APR-P160BA 76,400 BTU/h (22.4 kW) or less For indoor unit

APR-P160BA Use: For indoor unit (Capacity after distribution joint is 76,400 BTU/h (22.4 kW) or less.)

Example

Gas tube Liquid tube

Distribution Joint

4-21/64

3-13/16

2-53/64

Distribution Joint

4-21/64

3-13/16

D E

2-53/64

Insulation

Unit: in.

Table 1-18 Size of connection point on each part (Shown are inside diameters of tubing)

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)

1-13. Example of Tubing Size Selection and Refrigerant Charge Amount

Additional refrigerant charging

Based on the values in Tables 1-2, 1-3, 1-4 and 1-7, use the liquid tubing size and length, and calculate the amount of additional refrigerant charge using the formula below.

Required additional refrigerant charge (oz)

= 0.602 × (a) + 0.279 × (b)

(a): Liquid tubing Total length of ø3/8" (ft.) (b): 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.) 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.

Tightening torque for valve stem cap: 160 – 180 lbs · in.

Tightening torque: 300 – 360 lbs

CAUTION

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.

in.

Tightening torque: 590 – 710 lbs

Tightening torque for valve stem cap: 240 – 280 lbs

in.

Example:

Main tube of unit

L1 L2

LCLB

1st branch

Unit distribution tube

2 3

n–1

model 0752 model 0952 model 1252 model 1852

 Example of each tubing length

Main tubing Distribution joint tubing

LA = 131 ft. Indoor side LB = 16 ft. 1 = 16 ft. 4 = 20 ft. LC = 16 ft. 2 = 16 ft. 5 = 16 ft. LD = 49 ft. 3 = 7 ft.

 Obtain charge amount for each tubing size

Note that the charge amounts per 3.3 ft. are different for each liquid tubing size. ø3/8" (ø9.52) → LA + LB + LC + LD : 212 ft. × 0.602 oz/ft. = 127 oz ø1/4" (ø6.35) → 1 + 2 + 3 + 4 + 5 : 75 ft. × 0.279 oz/ft. = 20 oz

Total 147 oz

Additional refrigerant charge amount is 147 oz.

model 1852

CAUTION

Be sure to check the limit density for the room in which the indoor unit is installed.

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

× ceiling height 8.8 ft. = room volume 704 ft.3), the

80 ft graph at right shows that the minimum room volume should be 497 ft.

(floor area 56 ft.2) for refrigerant of 147 oz. Accordingly, openings such as louvers are required for this room.

Overall refrigerant charge amount for the air conditioner: oz

(Minimum room volume for indoor unit: ft.3)

147 (oz) + 123 (oz)

704 (ft.

)

= 0.38 (oz/ft.

) > 0.3 (oz/ft.3)

Therefore, openings such as louvers are required for this room.

ft.

4000

Range below the density limit of

0.3 oz/ft. (countermeasures not needed)

500

Range above the density limit of

0.3 oz/ft. (countermeasures needed)

400200 600 800 1000 1200

Total amount of refrigerant

Min. indoor volume

3500

3000

2500

2000

1500

1000

454

398

341

284

227

170

114

ft.

Min. indoor floor area

(when the ceiling is 8.8 ft. high)

2. SELECTING THE INSTALLATION SITE

Ceiling-Mounted Type

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 1-16.

 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.

NOTE

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

Fig. 2-1

Concealed Duct (High-Static Pressure) Type 4-Way Air Discharge Semi-Concealed Type

3 ft.

Fig. 2-2

1-Way Air Discharge Semi-Concealed Type

Ceiling

Air

min. 3 ft.

Obstacle

min. 2 in.

discharge

Wall

Air intake

min. 2 in.

Side view

Fig. 2-3

Wall

Air delivery will be degraded if the distance from the floor to the ceiling is greater than 10 ft.

Wall-Mounted Type

min. 6 in.

Front View

Fig. 2-4

min. 6 in.

2-2. Outdoor Unit

AVOID:

 heat sources, exhaust fans, etc. (Fig. 2-5)

 damp, humid or uneven locations

DO:

 choose a place as cool as possible.

 choose a place that is well ventilated and outside

air temperature does not exceed maximum 113°F constantly.

 allow enough room around the unit for air intake/

exhaust and possible maintenance. (Fig. 2-6)

 use lug bolts or equal to bolt down unit, reducing

vibration and noise.

Installation space

Distance between obstructions and the unit air inlet and outlet must be as shown below.

Inlet side C

More than 25/64" More than 25/64"

Outlet side More than

3.3 ft.

Fig. 2-6

Air direction chamber

(field supply)

Hot air

Exhaust fan

Heat source

Outdoor unit

Fig. 2-5

(Obstruction above unit)

Inlet side More than 8 in.

(Obstruction on inlet side)

(Ground)

Fig. 2-7

CAUTION

 Concerning inlet-side distance “C” (Fig. 2-6)

The minimum for distance “C” is 6 in. if there are no obstructions on the outlet side (wall *1 side) and *2 or *4 is not present. In all other cases, the minimum for distance “C” is 8 in.

 If the unit is installed with the outlet side facing wall *1, then there must be no obstruc-

tions on 2 of the remaining 3 sides: *2, *3, *4.

 If wall *1 is on the outlet side (Fig. 2-6), or if obstructions are present on all 3 sides *2,

*3, and *4 (Fig. 2-6), then the minimum distance for “A” and “B” is 6.6 ft. (Fig. 2-8). Even if there is no wall on the outlet side, a minimum of 3.3 ft. is required.

In case of multiple installations

 provide a solid base (concrete block, 4 × 16 in.

beams or equal), a minimum of 6 in. above ground level to reduce humidity and protect the unit against possible water damage and decreased service life. (Fig. 2-8)

 use lug bolts or equal to bolt down unit, reducing

vibration and noise.

Anchor bolts (4 pieces)

Fig. 2-8

2-3. Air Discharge Chamber for Top Discharge

Be sure to install an air discharge chamber (field supply) in the field when:

 it is difficult to keep a space of min. 20 in. between

the air discharge outlet and an obstacle.

 the air discharge outlet is facing a sidewalk and

discharged hot air may annoy passers-by. Refer to Fig. 2-10.

2-4. Installing the Unit in Heavy Snow Areas

In locations with strong wind, snow-proof ducting (field supply) should be fitted and direct exposure to the wind should be avoided as much as possible.

 Countermeasures against snow and wind

In regions with snow and strong wind, the following problems may occur when the outdoor unit is not provided with a platform and snow-proof ducting:

a) The outdoor fan may not run and damage to the

unit may occur. b) There may be no air flow. c) The tubing may freeze and burst. d) The condenser pressure may drop because of

strong wind, and the indoor unit may freeze.

Air discharge

Fig. 2-10

In regions with significant snowfall, the outdoor unit should be provided with a platform and snow-proof ducting.

2-5. Precautions for Installation in Heavy Snow

Areas

(1) The platform should be higher than the max. snow

depth. (Fig. 2-11)

(2) 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 outdoor unit.

(3) The platform foundation must be firm and the unit

must be secured with anchor bolts.

(4) In case of installation on a roof subject to strong

wind, countermeasures must be taken to prevent the unit from being blown over.

Without snowproof ducting (Low platform)

Fig. 2-11

Outdoor Unit

Duct

With snowproof ducting (High platform)

Air Intake

Fig. 2-12

9-7/161-1/8

1-1/8

1-3/821-5/3212-15/32

2-3/4

Rectangular hole

11-13/16

9-7/16

1-3/8

12-15/3221-5/32

2-3/4

21-13/3211

22-13/32

42-29/32

39-1/4

9-27/32

12-7/329-27/32

2-6. Dimensions of Air-Discharge Chamber Reference diagram for air-discharge chamber (field supply) CHX03652/06052

1 Unit front, air discharge chamber

2 Unit left side, air discharge chamber

3 Unit light side, air discharge chamber

4 Reinforcement brackets, 4 locations

2-7. Dimensions of Outdoor Unit with Air-Discharge Chamber (field supply) CHX03652/06052

11-13/16

Wind direction

4-5/16

1/2

25/3225/32

14-31/3213/3219/32

15-15/16

4-1/439-1/4

25-31/326-11/16

Wind direction

1/2 1/2

Wind

direction

13-3/8

2-11/36 21-13/32

Wind direction

48-7/16

Wind direction

23/32

Unit: in.

11-13/16

Wind direction

Unit: in.

Reference for air-discharge chamber (field supply) Required space around outdoor unit CHX03652/06052

If an air discharge chamber is used, the space shown below must be secured around the outdoor unit. If the unit is used without the required space, a protective device may activate, preventing the unit from operating.

(1) Single-unit installation

Min. 7-7/8

Min. 39-3/8

Unit: in.

The top and both sides must remain open.

CAUTION

If there are obstacles to the front and rear of the outdoor unit, the obstacle at either the front or rear must be no taller than the height of the outdoor unit.

(2) Multiple-unit installation

Installation in lateral rows



More than 11-13/16

More than 7-7/8

CAUTION

Installation in front-rear rows



intakes or outlets facing outlets

More than 59-1/16

More than 11-13/16

Unit: in.

More than 15-3/4

The front and top must remain open. The obstacles must be no taller than the height of the outdoor unit.

Installation with intakes facing outletsInstallation with intakes facing

More than 15-3/4

More than 78-3/4

CAUTION

Unit: in.

The front and both sides must remain open.

2-8. Dimensions of Snow Ducting Reference diagram for snow-proof ducting (field supply) CHX03652/06052

Fastened by screws at 13 locations

1 Unit top, snow-proof vent

2 Unit left side

3 Unit right side

4 Unit reverse side

30-3/32

9-3/16

28-13/16

47-19/32

Fastened by screws at 3 locations (also on reverse side)

Fastened by screw at 1 location (also on reverse side)

25-13/32

17-15/32

15-9/32

3-3/4 19-11/16

5-29/32

25/32

17-23/3219-11/16

Unit anchor hole

(7 – ø9/32 hole)

1-5/8 28-3/4

30-5/8

2-9. Dimensions of Outdoor Unit with Snow-Proof Ducting (field supply) CHX03652/06052

13-5/1619-11/16

5/8

3-31/32

Unit: in.

11-7/8

1-3/16

9-3/16

28-13/16

47-19/32

48-7/16

25-13/32

47-19/32

Wind direction

24-7/8

30-3/32

Wind direction

7-1/16

Wind direction

25/3225/32

14-31/3213/3219/32

15-15/16

Wind direction

Unit: in.

11-29/32

28-13/16

Wind direction

Reference diagram for snow-proof ducting – 1

Space requirements for setting – (1) CHX03652/06052

[Obstacle to the rear of unit]



Top is open:

(1) Single-unit installation

(2) Obstacles on both sides

Min. A

Min. B

(3) Multiple-unit installation (2 or more units)

Min. E

Min. E M in. E

Min. C

[Obstacle to the front of unit]



Top i s open:

(1) Single-unit installation

Min. D

(2) Multiple-unit installation (2 or more units)

Min. I Min. I

Min. G

Outdoor unit

CHX03652/06052

19-11/16 11-13/16 39-3/8

Min. H

Min. J

HIJ

Min. F

Outdoor unit

CHX03652/06052

AB DCEFG

5-29/32 5-29/32 7-7/8

11-13/16 11-13/16

5-29/32 7-7/8

Note: In cases 2 and 3 the height of the obstacle must be no taller than the height of the outdoor unit.



Top is blocked by an obstacle:

Min. L

Min. K

Outdoor unit

CHX03652/06052

19-11/16

5-29/32



Top i s blocked by an obstacle:

Min. M

Outdoor unit

CHX03652/06052

39-3/8

Min. N

Unit: in.

Reference diagram for snow-proof ducting – 2

Space requirements for setting – (2) CHX03652/06052

[Obstacles to the front and rear of unit]



The top and both sides must remain open. Either the obstacle to the front or the obstacle to the rear must be no taller than the height of the outdoor unit.

(1) Single-unit installation

Min. P

Dimension Q If a snow protection duct is attached after the unit is

installed, verify that dimension Q is 19-11/16 in. or more.

Min. O

Outdoor unit

CHX03652/06052

39-3/8

5-29/32

(2) Obstacles on both sides

Min. 11-13/16

Min. 7-7/8

Min. 39-3/8

[Installation in front-rear rows]



The top and both sides must remain open. Either the obstacle to the front or the obstacle to the rear must be no taller than the height of the outdoor unit.

Min. 11-13/16

Min. 39-3/8 Min. 7-7/8

Min. 59-1/16 Min. 7 8-3/4

Dimension Q If a snow protection duct is

attached after the unit is installed, verify that dimension Q is 19-11/16 in. or more.

Unit: in.

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.

34-27/32

(885)

Unit: in. (mm)

34-27/32

(885)

Table 3-1

Type

Length

12, 18, 24, 36

ABCD

31-1/32

(788)

28-15/32

(723)

(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.

8-17/64

(210)

8-17/64

(210)

Unit: in. (mm)

3-15/32

(88)

3-15/32

(88)

Table 3-2

Type

Length

12, 18, 24

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)

Note: For DC Fan Tap Change Procedure

for 4-Way Cassette, see page 31.

Hole-in-anchor Hole-in-plug

Concrete Insert

Suspension bolt (M10 or 3/8") (field supply)

Fig. 3-1

B (suspension bolt pitch)

A (suspension bolt pitch)

C (ceiling opening dimension)

Fig. 3-2

D (ceiling opening dimension)

Drain outlet(other side)

(VP25)

Suspension lug

Refregerant tubing joint(liquid side) Refregerant tubing joint(gas side)

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.

Fig. 3-3

Over 19/32 (15)

Supplied bolt

Power supply outlet

Inter-unit control wiring

Full-scale installation diagram (printed on top of container box)

Fig. 3-4

1-3/8 (35)

Unit: in. (mm)

15/32 – 43/64

(12 – 17)

Unit: in. (mm)

(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.

Nuts and washers (use for upper and lower)

Suspension bolt

Suspension lug

(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)

CAUTION

 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)

Double nut

Connection pipe

(drain port)

Align the hose band with the end of the pipe

15/32 – 43/64 (12 – 17)

Fig. 3-5

Hose band

Bead

Supplied drain hose

Fig. 3-6

Drain insulator (supplied)

Fig. 3-7

Air bleeder prohibited

Hard PVC socket

VP-25

(Field supply)

Packing

(supplied)

Notch

Unit: in.

Hard PVC pipe VP-25

(Field supply)

PVC adhesive

CAUTION

Tighten the hose clamps so their locking nuts face upward. (Fig. 3-6)

(2) After checking the drainage, wrap the supplied packing

and drain pipe insulator around the pipe. (Fig. 3-7)

NOTE

Make sure the drain pipe has a downward gradient (1/100 or more) and that there are no water traps.

CAUTION

Fig. 3-8

 Do not install an air bleeder

as this may cause water to spray from the drain pipe outlet. (Fig. 3-8)

CAUTION

 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.

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.

Fig. 3-9

Upward gradient prohibited

Fig. 3-10

Support pieces

Fig. 3-11

Drainage check

(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.

CAUTION

Be careful since the fan will start when you short the pin on the indoor control board.

Over 3-15/16 in.

Plastic container

for water intake

Drain pan outlet

Water (Approx. 0.3 gal)

Fig. 3-12

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