Page 2 - SAFETY PRECAUTIONS; Warning
• Before doing repair work, please read the " SAFETY PRECAUTIONS" carefully and fully understand them. • The precautionary items here are divided into " Warning" and " Caution" items. Items in particular which may cause death or serious injury to the service personnel if the ...
Page 4 - Table of Contents; -1. Precautions before Performing Inspection or Repair
Table of Contents SAFETY PRECAUTIONS TABLE OF CONTENTS 1. OPERATING RANGE 2. SPECIFICATIONS 2-1. Unit Specifications 2-2. Major Component Specifications 2-3. Other Component Specifications 3. DIMENSIONAL DATA 4. REFRIGERANT FLOW DIAGRAM 4-1. Refrigerant Flow Diagram 5. PERFORMANCE DATA 5-1. Temperat...
Page 5 - CHECKING ELECTRICAL COMPONENTS; -1. Measurement of Insulation Resistance; SPECIAL PRECAUTIONS WHEN SERVICING UNIT; 0-1. Characteristics of New Refrigerant R410A; APPENDIX A INSTRUCTION MANUAL; Page
9. CHECKING ELECTRICAL COMPONENTS 9-1. Measurement of Insulation Resistance 9-2. Checking Continuity of Fuse on PCB Ass'y 10. REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN SERVICING UNIT 10-1. Characteristics of New Refrigerant R410A 10-2. Checklist before Servicing 10-3. Tools Specifically for R410A ...
Page 7 - Voltage Rating
2. SPECIFICATIONS 2-1. Unit Specifications Indoor Unit KHS3082 Outdoor Unit CH3082 < 230V > DATA SUBJECT TO CHANGE WITHOUT NOTICE. Remarks: Rating conditions are: Cooling: Indoor air temperature 80°F D.B. / 67°F W.B. Outdoor air temperature 95°F D.B. / 75°F W.B. Heating: Indoor air temperature...
Page 11 - Indoor Unit
Indoor Unit KHS3082 24BYJ48-1256 Flap Motor Type Stepping Motor Rating Model Coil Resistance Ohm (Ambient Temp. 77 °F (25 °C)) Each Pair of Terminal : 200 +/- 7% DC 12V Aluminum Plate Fin / Copper Tube 1 and 2 19.5 4.55 (0.423) Face Area Coil Rows Fins Per inch Heat Exchanger Coil ft 2 (m 2 ) DATA S...
Page 13 - Outdoor Unit; External Finish; Fan
Outdoor Unit CH3082 2-2-2. Outdoor Unit P.C.Board Circuit Fuse Controls Part No. - 250V 25A POW-CH3082-B1 Noise Filer P.C.B Microprocessor 400V 3.5A CR-CH3082-F Control P.C.B - - HIC-CH3072R-C1 H.I.C.Board DATA SUBJECT TO CHANGE WITHOUT NOTICE. Pints (cc) - Micro F VAC External Finish Acrylic baked-...
Page 15 - • Indoor air temp sensor; • Outdoor air temp sensor; Temperature
2-3. Other Component Specifications Indoor Unit KHS3082 KHS3682 Outdoor Unit CH3082 CH3682 0 32 50 68 86 104 122 140 158 176 194 (0) (10) (20) (30) (40) (50) (60) (70) (80) (90) 40 60 80 100 120 140 160 180 200 20 50 10 2 3 4 5 6 7 8 9 10 59 68 77 86 95 104 (10) (15) (20) (25) (30) (35) (40) • Indoo...
Page 17 - AIR DISCHARGE; AIR INT
Outdoor Unit CH3082 CH3682 Unit: inch(mm) (852-0-0010-19400-1) 6-1 1/6 25-31/32 4-1 1/32 2-15/16 2-3/8 2-ID:1-1/4 holes (holes for drain) Of the 4-ID:1-1/4 holes, use 1 of 2 holes specified for drain use to install the port. Use rubber plugs to seal the remaining 3 holes . 1/2 1/2 2-15/16 8-5/8 4-1/...
Page 18 - Indoor unit; REFRIGERANT FLOW DIAGRAM
Compressor 4-way valve Main Accumulator High pressure switch Wide tube service valve Wide tube Sub Accumulator Narrow tube service valve Narrow tube Heat exchanger Heat exchanger Muffler Cooling cycle (Defrosting cycle) Heating cycle Indoor unit Outdoor unit Electric expansion valve Strainer M O.D 5...
Page 19 - NOTE; (3) Indoor discharge air performance chart
5. PERFORMANCE DATA 5-1. Temperature Charts Indoor Unit KHS3082 Outdoor Unit CH3082 • Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value. NOTE Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (60Hz, 230V) (1) Low pres...
Page 27 - from the actual heating characteristics.; OUTDOOR
Indoor Unit : KHS3082 Outdoor Unit : CH3082 Power Supply : 230V Single Phase 60Hz < Heating Capacity > 5-3. Heating Capacity TH : Total Heating Capacity (BTU/h) 1. Rating conditions (#) : Indoor Unit Entering Air Temp. 70 °F (21.1 °C) D.B. : Outdoor Ambient Temp. 47 °F (8.3 °C) D.B. / 43 °F (6...
Page 29 - : Axis air velocity 0
Horizontal distance (ft.) Axis air velocity (ft./sec.) Vertical distance (ft.) Room air temp. : 70°F (21.1°C) Fan speed : High Heating Horizontal distance (ft.) Axis air velocity (ft./sec.) Vertical distance (ft.) Room air temp. : 80°F (26.7°C) Fan speed : High Cooling : Flap angle 0 , : Axis air ve...
Page 31 - Heating
6. ELECTRICAL DATA 6-1. Electrical Characteristics Indoor Unit KHS3082 Outdoor Unit CH3082 Indoor Unit Outdoor Unit Fan Motor Fan Motor + Compressor Performance at 230V Single-phase 60Hz Rating conditions Running amp. A 0.4 Power input W A W A W A W 39 16.1 3,251 Rating conditions: Indoor air temper...
Page 38 - Maximum Current Value Change Function; the approval of the client.; Description of function
The maximum current value is changed to 14A (for CH3082) or 17A (for CH3682) to prevent power breaker tripping. (It is set to 24A (in cooling) or 22A (in heating) when the unit is delivered from the factory.) <Maximum Current Value Change Procedure> (1) Remove the inspection panel. Refer to Fi...
Page 39 - Indoor heat exchanger
Overload prevention during heating During HEAT operation, the temperature of the indoor heat exchanger is used to control the frequency and lessen the load on the compressor before the protective device is activated. Cold-air prevention during heating Compressor discharge temperature control During ...
Page 40 - Heating operation; Defrosting Sequence; Releasing of defrosting; Reverse-Cycle Defrosting; Defrost detection and release
This function prevents the circuit breaker or fuse from operating to open the circuit. This function works when electrical current has increased due to an increase in the cooling / heating load, or to a decrease in the power supply voltage. In these cases, operation frequency is reduced or operation...
Page 41 - -1. Precautions before Performing Inspection or Repair; power is turned ON, there is an external ROM (OTP data) failure on the; PROCEDURE
8. TROUBLESHOOTING 8-1. Precautions before Performing Inspection or Repair NOTE After checking the self-diagnostics monitor, turn the power OFF before starting inspection or repair.High-capacity electrolytic capacitors are used inside the outdoor unit controller (inverter). They retain an electrical...
Page 42 - INDOOR UNIT; OFF
Since the indications cover various units, the corresponding parts listed below may not be present in some models. (1) OPERATION lamp(2) TIMER lamp (3) LED CLEAN lamp OPERATION TIMER LED CLEAN ON/OFF INDOOR UNIT (1) Self-diagnostics Lamps .... OFF .... Blinking .... ON (Illuminated) LED Clean (3) Op...
Page 43 - No indicators illuminate and the
(2) If the self-diagnostics function fails to operate Check the indoor unit. Is the fuse blown? Replace the controller. Replace the circuit board or the fuse. No indicators illuminate and the indoor fan does not rotate. Check the power voltage. Normal Blown 43
Page 44 - -3. Checking the Indoor and Outdoor Units; operation by 60 times faster than normal).; Use the remote controller to operate the; Control
8-3. Checking the Indoor and Outdoor Units (1) Checking the indoor unit (2) Checking the outdoor unit Using the TEST/T-RUN terminals Control No. Check items (unit operation) T-RUN : Test run (compressor and fan motor turn ON). TEST/MV : Compresses time to 1/60th (accelerates operation by 60 times fa...
Page 45 - (3) Serial Communication Error Identification Procedure; < Check Items before Troubleshooting Serial Communication Start >
(3) Serial Communication Error Identification Procedure Refer to "Method of Self-Diagnostics" for the self-diagnostics procedure. (3-1) Alarm Code : E05 < Before the Operation > If the lamps on the main body show the following conditions after the completion of self-diagnostics,a commu...
Page 48 - Measurement location
[Trouble symptom 3] Motor rotates for some time (several seconds), but then quickly stops, when the indoor unit operates. (There is trouble in the system that provides feedback of motor rotation speed from the motor to the indoor unit controller.) [Trouble symptom 4] Fan motor rotation speed does no...
Page 50 - -5. Noise Malfunction and Electromagnetic Interference
8-5. Noise Malfunction and Electromagnetic Interference An inverter A/C operates using pulse signal control and high frequencies. Therefore, it is susceptible to the effects of external noise, and is likely to cause electromagnetic interference with nearby wireless devices. A noise filter is install...
Page 51 - CHECKING ELECTRICAL COMPONENTS; Resistance; Resistance for Electrical Parts
Insulation tester Probe Clip Ground wire Terminal plate Copper tube or metallic part Clip Insulation tester Probe Fig. 1 Fig. 2 Fig. 3 Fig. 4 Copper tube or metallic part Clip Insulation tester Probe Clip Insulation tester Probe Metallic part From fan motor, compressor and other parts 9. CHECKING EL...
Page 52 - Remove the PCB Ass'y from the electrical
Fuse PCB Ass'y Fig. 5 Fig. 6 Fuse 9-2. Checking Continuity of Fuse on PCB Ass'y Remove the PCB Ass'y from the electrical component box. Then pull out the fuse from the PCB Ass'y. (Fig. 5)Check for continuity using a multimeter as shown in Fig. 6. 52
Page 53 - 0-1. Characteristics of New Refrigerant R410A; composition of the remaining refrigerant.; Thus, always charge the refrigerant while it is in liquid phase.; CAUTION
10. REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN SERVICING UNIT 10-1. Characteristics of New Refrigerant R410A 10-1-1. What is New Refrigerant R410A? R410A is a new refrigerant that contains two types of pseudo-non-azeotropic refrigerant mixture. Its refrigeration capacity and energy efficiency are a...
Page 54 - Specification A
Tubing precautions Refrigerant R410A is more easily affected by dust or moisture compared with R22, thus be sure to temporarily cover the ends of the tubing with caps or tape prior to installation.Never use 0.0276" (0.7 mm)-thick copper tubing or tubing which is less than 0.0315" (0.8 mm) in...
Page 55 - For servicing, use the following tools for R410A; Tools specifically for R410A; Tool Distinction; exclusively for R410A and never alternately with R22 and R407C.; unit and outdoor unit.; HAB oil
10-3. Tools Specifically for R410A For servicing, use the following tools for R410A Gauge manifoldCharging hoseGas leak detectorRefrigerant cylinderCharging cylinderRefrigerant recovery unitVacuum pump with anti-reverse flow (*1)(Solenoid valve-installed type, which prevents oil from flowing back in...
Page 56 - 0-5. In Case of Compressor Malfunction; Use a solenoid valve-installed vacuum pump; Length of tubing
10-5. In Case of Compressor Malfunction CAUTION Should the compressor malfunction, be sure to make the switch to a replacement compressor as quickly as possible.Use only the tools indicated exclusively for R410A. See "10-3. Tools Specifically for R410A." 10-5-1. Procedure for Replacing Compr...
Page 57 - Single valve
Valve Single valve Charge liquid refrigerant with cylinder in up-side-down position. Single valve (with siphon tube) Charge with cylinder in normal position. Liquid Valve Liquid Charging cylinder Open Refrigerant cylinder Liquid NO! CAUTION Never charge a large amount of liquid refrigerant at once t...
Page 58 - carry out repairs, then recharge the refrigerant.
Length of tubing Evacuation time Less than 33 ft. (10 m) More than 10 minutes More than 33 ft. (10 m) More than 15 minutes 10-6. In Case Refrigerant is Leaking CAUTION Never attempt to charge additional refrigerant when refrigerant has been leaking from the unit. Follow the procedure described below...
Page 59 - with the indoor unit.; Charge additional refrigerant in liquid state only.; This will cause the air conditioner to; do not use its existing tubing.; completely new tubing must be used.; out repairs. Only then should you recharge the refrigerant.
10-7. Charging Additional Refrigerant 10-7-1. When Tubes are Extended Observe the proper amount of refrigerant as stated in this service manual or the installation manual that came with the indoor unit. Charge additional refrigerant in liquid state only. 10-8. Retro-Fitting Existing Systems 10-8-1. ...
Page 61 - INSTRUCTION MANUAL; Inverter-Controlled Split System Air Conditioner; MODE D’EMPLOI; Climatiseur de type séparé contrôlé par inverseur; This air conditioner uses; Save These Instructions!
KHS3082 KHS3682 COOL/DRY/HEAT Model © SANYO 2010 Pub. OI-85264181 149 000 INSTRUCTION MANUAL Inverter-Controlled Split System Air Conditioner MODE D’EMPLOI Climatiseur de type séparé contrôlé par inverseur This air conditioner uses the new refrigerant R410A. Save These Instructions! Conserver ce mod...
Page 63 - • We recommend that this air conditioner be installed; • Before installation, check that the voltage of the electric; SAFETY INSTRUCTIONS; • Read this Instruction Manual carefully before using
3 PRODUCT INFORMATION If you have problems or questions concerning your Air Conditioner, you will need the following information. Model and serial numbers are on the nameplate on the bottom of the cabinet. Model No. __________________________________ Serial No. ___________________________________ Da...
Page 64 - NAMES OF PARTS; Air Intake; TIMER lamp
4 NAMES OF PARTS This illustration is based on the external view of a standard model.Consequently, the shape may differ from that of the air conditioner which you have selected. This air conditioner consists of an indoor unit and an outdoor unit. You can control the air conditioner with the remote c...
Page 65 - Symbols
5 REMOTE CONTROL UNIT (DISPLAY) (1) Operation mode AUTO ..................................... HEAT ...................................... MILD DRY .............................. COOL ..................................... FAN ........................................ (2) Fan speed Automatic operation ...
Page 66 - REMOTE CONTROL UNIT
6 REMOTE CONTROL UNIT Transmitter When you press the buttons on the remote control unit, the mark appears in the display to transmit the setting changes to the receiver in the air conditioner. Display Information on the operating conditions is displayed while the remote control unit is switched on. ...
Page 68 - USING THE REMOTE CONTROL UNIT; HOW TO INSTALL BATTERIES; HOW TO USE THE REMOTE CONTROL UNIT
8 USING THE REMOTE CONTROL UNIT HOW TO INSTALL BATTERIES 1. Slide the cover in the direction indicated by the arrow and remove it. 2. Install two AAA alkaline batteries. Make sure the batteries point in the direction marked in the battery compartment. 3. Use a thin object such as the tip of a pen to...
Page 69 - OPERATION WITH THE REMOTE CONTROL UNIT; Automatic Operation
9 OPERATION WITH THE REMOTE CONTROL UNIT 1. Automatic Operation This unit automatically switches between cooling operation and heating operation according to the difference between the room temperature and the temperature setting. 2. Manual Operation Check that the circuit breaker on the power panel...
Page 70 - Adjusting the Fan Speed; A. Automatic fan speed; Simply set the FAN SPEED selector button to the; Night Setback Mode; Night Setback Mode is used for saving energy.
10 3. Adjusting the Fan Speed A. Automatic fan speed Simply set the FAN SPEED selector button to the position.This automatically sets the best fan speed for the room temperature. B. Manual fan speed If you want to adjust fan speed manually during operation, just set the FAN SPEED selector button as ...
Page 72 - SPECIAL REMARKS; Heating performance; Power failure during operation
12 A. In Heating Mode: ( ) B. In Cooling Mode: ( ) • Unoccupied Mode triggers Heating or Cooling Operation in response to the room temperature, but when this happens, the remote control unit will continue to display the Operation mode set by the user. • If the room temperature rapidly changes, the r...
Page 73 - SETTING THE TIMER; How to set the present time
13 SETTING THE TIMER In the descriptions below, the following settings are used for the temperature and time indicator selector button on the bottom front section of the remote control unit.• Temperature: °F• Time: AM, PM 1. How to set the present time (Example) To set to 10:30 pm. 2. How to set the...
Page 74 - Operation together with the daily ON/OFF; TIPS FOR ENERGY SAVING; Do not; • Block the air intake and outlet of the unit. If they are; Do; Operation
14 4. How to set daily ON/OFF repeat timer (Example) To start operation at 7:10 am. and stop the air conditioner at 11:00 am. • The ON/OFF combination timer uses the current time as the reference, and it is activated starting from whichever set time comes first. • With the ON/OFF combination timer, ...
Page 75 - • Use the FLAP button on the remote control unit to adjust the; When the air conditioner is not running; CARE AND CLEANING; B. Setting the airflow manually
15 ADJUSTING THE AIRFLOW DIRECTION 1. Horizontal The horizontal airflow can be adjusted by moving the vertical vanes with your hands to the left or right. When the humidity is high, the vertical vanes should be in the front position during the cooling or dehumidifying operation. If the vertical vane...
Page 76 - Removing
16 If these parts are stained, use a clean cloth moistened with a mild liquid detergent. When cleaning the grille, be careful not to force the vanes out of place. Anti-Mold Filter The anti-mold filter behind the front panel should be checked and cleaned at least once every two weeks. How to remove t...
Page 77 - Remounting; Washing the front panel with water; TROUBLESHOOTING
17 Remounting Grasp the sections near the front panel arms on both sides, and hold the front panel so that it is nearly horizontal. Push the arm shafts towards the outside so that they come into contact with the top of the indentations on the right and left sides of the air conditioner. Then push fi...
Page 79 - Contents; This air conditioner uses the new refrigerant R410A.; INSTALLATION INSTRUCTIONS; – Inverter Split System Air Conditioner –; N OT E; SANYO North America Corporation; In Canada
Contents Page IMPORTANT!Please Read Before Starting .................................. 2 1. GENERAL .......................................................... 3 1-1. Tools Required for Installation (not supplied)1-2. Accessories Supplied with Unit1-3. Optional Copper Tubing Kit1-4. Type of Copper Tu...
Page 80 - SPECIAL PRECAUTIONS; WARNING
2 IMPORTANT! Please Read Before Starting This air conditioning system meets strict safety and operatingstandards. As the installer or service person, it is an importantpart of your job to install or service the system so it operatessafely and efficiently. For safe installation and trouble-free opera...
Page 81 - Model
3 1. General This booklet briefly outlines where and how to install the air conditioning system. Please read over the entire set of instructions for the indoor and outdoor units and make sure all accessory parts listed are with the system before beginning. 1-1. Tools Required for Installation (not s...
Page 82 - Installation Site Selection; Front View
4 1-5. Additional Materials Required for Installation 1. Refrigeration (armored) tape 2. Insulated staples or clamps for connecting wire (See local codes.) 3. Putty 4. Refrigeration lubricant 5. Clamps or saddles to secure refrigerant tubing 2. Installation Site Selection 2-1. Indoor Unit AVOID: ● d...
Page 83 - choose a place as cool as possible.
● Concerning air-intake side distance “A” (Fig. 5a) The minimum for distance “A” is 6" if there are noobstructions on the air-discharge side (wall *1 side)and *2 or *4 is not present. In all other cases, the min-imum for distance “A” is 8". ● If wall *1 is on the air-discharge side (Fig. 5a)...
Page 84 - Air discharge
6 Fig. 5e Fig. 5f Fig. 5g 2-2-1. Installing the Unit in an Area with High Winds and in a Snowy Area ● In locations with high winds, a wind-proof duct should be fitted and direct exposure to the wind should be avoided as much as possible. (Fig. 5e) ● In regions with significant snowfall, the outdoor ...
Page 86 - Required space around the outdoor unit
8 Required space around the outdoor unit If the wind-proof duct 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 CAUTION The top a...
Page 88 - Top is blocked by an obstacle:
10 Reference diagram for snow-proof duct Space requirements for setting CH3082/3682 with STK-BDV80E Min. 39-3/8" or more (1) Single-unit installation (2) Multiple-unit installation (2 or more units) [Obstacle to the front of unit] Min. 6" or more [Obstacle to the rear of unit] (1) Single-uni...
Page 89 - [Obstacles to the front and rear of unit]; to the rear must be no taller than the height of the outdoor unit.
11 Min. 39-3/8 " or more Min. 11-13/16 " or more Min. 11-13/16 " or more Min. 19-11/16 " or more Min. 59-1/16 " or more Min. 78-3/4 " or more (1) Single-unit installation (2) Ob Installation is possible with the maximum 3 outdoor units. stacles on both sides [Installation in ...
Page 90 - How to Install the Indoor Unit; Also avoid areas where elec-
Rear panel Fig. 7c Rear panel Fig. 7b 12 S et s crew o n ly for tra ns portatio n Fig. 6 Rear panel marks Fig. 7a Lefttubing Righttubing Right-reartubing(recommended) Right-downwardtubing Left-reartubing Left-downwardtubing Fig. 8 3. How to Install the Indoor Unit 3-1. Remove the Rear Panel from the...
Page 91 - Table 4; Rawl pl
13 I n door s ide O u tdoor s ide Hole should be made at a slight downward slant to the outdoor side. N OT E Fig. 10 Plastic cover INSIDE OUTSIDE Wall Slightangle PVC pipe (Locally purchased) Fig. 12 PVC pipe (Locally p u rcha s ed) C u t at s li g ht a ng le Fig. 11 (4) Using a sabre saw, key hole ...
Page 93 - General precautions on wiring
15 3-5. Shape the Indoor Side Tubing (1) Arrangement of tubing by direction a) Right or left tubing Cut out the corner of the right/left frame with a hacksaw or the like. (Figs. 20 and 21) b) Right-rear or left-rear tubing In this case, the corner of the frame need not be cut. (2) To mount the indoo...
Page 94 - INDOOR; N O T E; Wire Size
16 3-7. Wire Size and Length Regulations on wiring diameter differ from locality to locality. For field wiring requirements, please refer to your local elec- trical codes. Carefully observe these regulations when carrying out the installation. Refer to the wiring system diagram (Fig. 23) for the mea...
Page 97 - Push; Rear panel
19 3-9. Mounting (1) To install the indoor unit, mount the indoor unit onto the 3 tabs on the upper part of the rear plate. (2) Hold down the air discharge outlet and press the lower part of the indoor unit until it clicks to securely fasten to the 2 tabs on the lower part of the rear plate. (Fig. 3...
Page 100 - How to Install the Outdoor Unit; -1. Wiring Instructions for the Outdoor Unit; Cover B
22 4. How to Install the Outdoor Unit First refer to Section 2. Installation Site Selection. 4-1. Wiring Instructions for the Outdoor Unit Regulations on wire size differ from locality to locality. For field wiring requirements, please refer to your local elec- trical codes. Make sure that the insta...
Page 101 - Refrigerant Tubing; -3. Caution before Connecting Tubes Tightly; urrin; If the; us
23 5. Refrigerant Tubing 5-1. Use of the Flaring Method Many of the conventional split system air conditioners employ the flaring method to connect refrigerant tubes which run between indoor and outdoor units. In this method, the copper tubes are flared at each end and connected with flare nuts. 5-2...
Page 102 - Clamp; Nut
24 5-4. Connecting Tubing between Indoor and Outdoor Units a) Tightly connect the indoor side refrigerant tubing exten-ded from the wall with the outdoor side tubing. (Fig. 52) b) To fasten the flare nuts, apply specified torque as: Table 6 5-5. Insulation of Refrigerant Tubing To prevent heat loss ...
Page 103 - Required time for evacuation when
25 6. Air Purging Air and moisture remaining in the refrigerant systemhave undesirable effects as indicated below. Therefore,they must be purged completely. ● pressure in the system rises ● operating current rises ● cooling (or heating) efficiency drops ● moisture in the air may freeze and block cap...
Page 106 - Pump Down; (1) Connect the Lo side charging hose of the manifold; Basic Functions of the Service Valves; Action; Wide Tu
28 ■ Pump Down Pump down means collecting all refrigerant gas in thesystem back into the outdoor unit without losing any ofthe gas. Pump down is used when the unit is to bemoved or before servicing the refrigerant circuit. Pump Down Procedure Be sure to carry out pump down with the unit incooling mo...
Page 107 - Remote control; Remote Control Unit Installation Position; Table 9; Service Valve Connections
a) Temporary connection:Screw in 3 – 5 turns by hand. (Fig. 60c) b) To fasten the flare nuts, apply specified torqueas Table 9 and Fig. 60d. Fig. 60c Fig. 60d CAUTION Torque wrench Be sure to tighten the flare nut using the prescribed torque. If the nut is over-tightened, refrigerant leakage may occ...
Page 108 - -1. Address Setting of the Remote Control Unit
30 8. Address Switch 8-1. Address Setting of the Remote Control Unit The address can be set in order to prevent interference between remote controllers when 2 indoor units are installed near each other. The address is normally set to “A.” To set a different address, it is necessary to change the add...
