Instruction/ maintenance manual of the product CH2472 Sanyo
Go to page of 111
IMPORTANT These air conditioners employ new refrigerant R410A. Pay special attention when servicing the unit. TECHNICAL & SER VICE MANUAL KHS1872 + CH1872 KHS2472 + CH2472 DC INVERTER SPLIT SYSTEM AIR CONDITIONER Destination: North America Outdoor Model No.
When Wiring ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJUR Y OR DEA TH. ONL Y A QUALIFIED, EXPERIENCED ELECTRICIAN SHOULD A TTEMPT TO WIRE THIS SYSTEM. SPECIAL PRECAUTIONS This symbol refers to a hazard or unsafe practice which can result in severe personal injury or death.
T able of Contents 1. OPERA TING RANGE 2. SPECIFICA TIONS 2-1. Unit Specifications 2-2. Major Component Specifications 2-3. Other Component Specifications 3. DIMENSIONAL D AT A 4. REFRIGERANT FLOW DIAGRAM 4-1. Refrigerant Flow Diagram 5.
10. CHECKING ELECTRICAL COMPONENTS 10-1. Measurement of Insulation Resistance 10-2. Checking Continuity of Fuse on PCB Ass'y 1 1. REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN SE RV ICING UNIT 1 1-1. Characteristics of New Refrigerant R410A 1 1-2.
95 °F D.B. / 71 °F W .B. 67 °F D.B. / 57 °F W .B. 80 °F D.B. / 67 °F W .B. _ D.B. / _ W .B. 1. OPERA TING RANGE Maximum Minimum Maximum Minimum 1 15 °F D.B. 0 °F D.B. 75 °F D.B. / 65 °F W .B. 0 °F D.B. T emperature Indoor Air Intake T emp. Outdoor Air Intake T emp.
2. SPECIFICATIONS 2-1. Unit Specifications Indoor Unit KHS1872 Outdoor Unit CH1872 < 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.
Indoor Unit KHS1872 Outdoor Unit CH1872 < 208V > 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 70°F D.
Indoor Unit KHS2472 Outdoor Unit CH2472 < 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 70°F D.
Indoor Unit KHS2472 Outdoor Unit CH2472 < 208V > 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 70°F D.
Indoor Unit KHS1872 MP24Z3-12V Flap Motor Type Stepping Motor Rating Model Coil Resistance Oh m (Ambient Temp. 77 °F (25 °C)) Each Pair of Terminal : 400 +/- 7% DC 12V Aluminum Plate Fin / Copper Tube 2 19.5 3.07 (0.285) Face Area Coil Rows Fins Per inch Heat Exchanger Coil ft 2 (m 2 ) DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Indoor Unit KHS2472 MP24Z3-12V Flap Motor Type Stepping Motor Rating Model Coil Resistance Oh m (Ambient Temp. 77 °F (25 °C)) Each Pair of Terminal : 400 +/- 7% DC 12V Aluminum Plate Fin / Copper Tube 2 19.5 3.07 (0.285) Face Area Coil Rows Fins Per inch Heat Exchanger Coil ft 2 (m 2 ) DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Outdoor Unit CH1872 2-2-2. Outdoor Unit Control PCB Control Circuit Fuse Controls Part No. Microprocessor 250V 25A CB-CH1872 DATA SUBJECT TO CHANGE WITHOUT NOTICE. Pints (cc) WHT - BLU : BLU - RED : RED - WHT : 77.5 77.5 77.5 Micro F VAC External Finish Acrylic baked-on enamel finish FV50S .
Outdoor Unit CH2472 Control PCB Control Circuit Fuse Controls Part No. Microprocessor 250V 25A CB-CH2472 DATA SUBJECT TO CHANGE WITHOUT NOTICE. Pints (cc) - Micro F VAC External Finish Acrylic baked-on enamel finish FV50S ... 1.49 (700) - - Internal Controller Yes Aluminum Plate Fin / Copper Tube 2 18.
2-3. Other Component Specifications Indoor Unit KHS1872 KHS2472 Outdoor Unit CH1872 CH2472 0 32 50 68 86 104 122 140 158 176 194 (0) (10) (20) (30) (40) (50) (60) (70) (80) (90) 40 60 .
3. DIMENSIONAL D ATA Indoor Unit KHS1872 KHS2472 Unit: inch(mm) 15.
Narrow tube service valve dia.1/4" (6.35) Wide tube service valve dia.1/2" (12.70) 4-3/8 2-5/32 6-17/32 5-23/32 3/32 26-3/8(670) 23/32 1-13/16 34-21/32(880) 23-15/16 5-1 1/32 15/32 1 1-7/32(.
Wide tube service valve dia.5/8" (15.88) Narrow tube service valve dia.1/4" (6.35) 4-7/16 5-29/32 2-1/32 4-1/2 29-1/8(740) 23/32 1-21/32 35-7/16(900) 23-15/16 5-1 1/32 15/32 12-19/32(320) 13.
Compressor 4-way valve Accumulator High pressure switch Wide tube service valve Wide tube Narrow tube service valve Narrow tube Heat exchanger Heat exchanger Muffler Capillary tube for split flow Cooling cycle (Defrosting cycle) Heating cycle Indoor unit Outdoor unit Electric expansion valve Strainer M *1 *1 O.
5. PERFORMANCE D ATA 5-1. T emperature Charts Indoor Unit KHS1872 Outdoor Unit CH1872 • Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value.
Indoor Unit KHS1872 Outdoor Unit CH1872 • Check each performance value in test-run mode. Electrical performance values represent a combined indoor/outdoor value. • Overload prevention operates to protect the air conditioner when outdoor ambient temperature becomes extremely high in heating mode.
Indoor Unit KHS2472 Outdoor Unit CH2472 Cooling Characteristics (RH : 46%, Indoor fan speed : High fan) (60Hz, 230V) (1) Low pressure performance chart (2) Operating current performance chart .
Indoor Unit KHS2472 Outdoor Unit CH2472 70 °F ( 21 °C) 63 °F ( 17 °C) Indoor air temp.73 °F ( 23°C) 63 °F ( 17 °C) Indoor air temp.73 °F ( 23°C) 70 °F ( 21 °C) 63 °F ( 17 °C) Indoor air temp.
Indoor Unit : KHS1872 Outdoor Unit : CH1872 Power Supply : 230V Single Phase 60Hz < Cooling Capacity > 5-2. Cooling Capacity RATING CAPACITY: 17,500 BTU/h AIR FLOW RATE: 524 CFM INDOOR OUTDOO R EN T. T EMP. o F ( o C )A MB IE NT TEMP.
Indoor Unit : KHS2472 Outdoor Unit : CH2472 Power Supply : 230V Single Phase 60Hz < Cooling Capacity > TC : Total Cooling Capacity (BTU/h) SHC : Sensible Heat Capacity (BTU/h) 1. Rating conditions (#) : Indoor Unit Entering Air Temp.
Indoor Unit : KHS1872 Outdoor Unit : CH1872 Power Supply : 230V Single Phase 60Hz < Cooling Capacity (Low Ambient) > 5-3. Cooling Capacity (Low Ambient) TC : Total Cooling Capacity (BTU/h) SHC : Sensible Heat Capacity (BTU/h) 1.
Indoor Unit : KHS2472 Outdoor Unit : CH2472 Power Supply : 230V Single Phase 60Hz < Cooling Capacity (Low Ambient) > TC : Total Cooling Capacity (BTU/h) SHC : Sensible Heat Capacity (BTU/h) 1. 2. Above data represents the value when the operation frequency of a compressor is fixed.
Indoor Unit : KHS1872 Outdoor Unit : CH1872 Power Supply : 230V Single Phase 60Hz < Heating Capacity > 5-4. Heating Capacity TH : T otal Heating Capacity (BTU/h) 1. Rating conditions (#) : Indoor Unit Entering Air Temp. 70 °F (21.
Indoor Unit : KHS2472 Outdoor Unit : CH2472 Power Supply : 230V Single Phase 60Hz < Heating Capacity > TH : T otal Heating Capacity (BTU/h) 1. Rating conditions (#) : Indoor Unit Entering Air Temp. 70 °F (21.1 °C) D.B. : Outdoor Ambient Temp.
Horizontal distance (ft.) Axis air velocity (ft./sec.) Vertical distance (ft.) Room air temp. :7 0 °F (21.1 °C ) Fan speed : High Heating Horizontal distance (ft.
Horizontal distance (ft.) Axis air velocity (ft./sec.) Vertical distance (ft.) Room air temp. :7 0 °F (21.1 °C ) Fan speed : High Heating Horizontal distance (ft.
6. ELECTRICAL D ATA 6-1. Electrical Characteristics Indoor Unit KHS1872 Outdoor Unit CH1872 Indoor Unit Outdoor Unit Fan Motor Fan Motor + Compressor Performance at 230V Single-phase 60Hz Rating conditions Running amp. A 0.3 Power input W A W A W A W 32 6.
Indoor Unit KHS2472 Outdoor Unit CH2472 Indoor Unit Outdoor Unit Fan Motor Fan Motor + Compressor Performance at 230V Single-phase 60Hz Rating conditions Running amp. A 0.5 Power input W A W A W A W 55 10.3 2,300 Rating conditions: Indoor air temperature: 80 °F (26.
EVAPORATOR TERMINAL BASE TO OUTDOOR UNIT GRN/YEL LAMP 10P( WHT ) FLAP 5P (WHT) FLAP CONNECTOR FLAP MOTOR RED PNK BLU BRN YEL 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 AC1 AC2 SI WHT RED WHT WHT WHT WHT .
8FA2-5257-64000-2 REACTANCE 3 2 1 1 2 3 CM COMPRESSOR MOTOR RED (PNK) WHT BLU RED (PNK) WHT BLU FERRITE CORE 3P - CONNECTOR (WHT) R S T W W W W W W CONTROLLER 1 2 3 4 1 2 1 2 1 2 3 4 5 5 1 2 3 4 1 2 3.
8FA2-5257-69200-3 REACTANCE 3 2 1 1 2 3 CM COMPRESSOR MOTOR RED (PNK) WHT BLU RED (PNK) WHT BLU FERRITE CORE 3P - CONNECTOR (WHT) U V W W W W W W W CONTROLLER 1 2 3 4 1 2 1 2 1 2 3 4 5 5 1 2 3 4 1 2 3.
T est run mode Self-diagnostic mode Address setting mode Fig. 13 Fig. 14 Fig. 15 Ta b ACL button ION button ACL (Reset) butto n ON/OFF operation button 1 HR.
One of the two types of connectors illustrated at left is used. Their basic structure is the same for each. How to Disconnect Hold the resin connector cover, and pull the connector off. You cannot disconnect the connector by pulling the wire since it is locked inside.
Emergency operation SENSOR DR Y AUTO cooling/heating operation Selecting the operation mode During D RY operation, the system adjusts the room temperature and fan speed according to the conditions in the room, in order to maintain a comfortable room environment.
HIGH POWER NIGHT SETBACK Lamp colors Ti mer backup This function acts to raise the power but keeps the AC system in the same operating mode. This function is set with the HIGH POWER button on the remote controller . (It can be set regardless of the temperature and fan speed settings.
Overload prevention during heating During HEA T 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.
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.
1HR. TIMER button ON/OFF operation button ACL (Reset) button ION button < Clock display > Test run mode Self-diagnostics mode 9. TROUBLESHOOTING 9-1. Precautions before Performing Inspection or Repair NOTE After checking the self-diagnostics monitor , turn the power OFF before starting inspection or repair .
Since the indications cover various units, the corresponding parts listed below may not be present in some models. REMOTE CONTROL receiver (1) OPERATION lamp (2) TIMER lamp (3) QUIET lamp ION lamp OPERATION butto n INDOOR UNIT (1) Self-diagnostics Lamps Indication on indoor unit .
(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.
9-3. 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 :T est run (compressor and fan motor turn ON). TEST/MV : Compresses time to 1/60th (accelerates operation by 60 times faster than normal).
(3) Serial Communication Error Identification Procedure Refer to "Method of Self-Diagnostics" for the self-diagnostics procedure. (3-1) Condition: E01 < Before the Operation > If the l.
What is the latest self-diagnosis result ? Condition: E12 Defect in the outdoor unit P. C. board. Condition: E01 Defect or connection error in the inter-unit cable Defect in the indoor unit P .C. board ( Continued from the previous page A. ) A ( Continued from the previous page B.
(3-2) Condition: E12 T roubleshooting Serial Communication 1. T urn off the power and wait until the power lamp (LED) of the outdoor unit controller is turned OFF . 2. Disconnect the cable from the terminal 3 on the indoor unit terminal strip.
[T rouble 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 .
9-4-2. Outdoor Fan Motor This outdoor DC fan motor contains an internal control PCB. Therefore, it is not possible to measure the coil resistance, and the following procedure should be used to check the motor . Perform the trouble diagnosis by T est Run mode described on Installation Instructions.
9-5. 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.
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 10.
Fuse PCB Ass'y Fig. 5 Fig. 6 Fuse 10-2. 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.
11. REFRIGERANT R410A: SPECIAL PRECAUTIONS WHEN SERVICING UNIT 11-1. Characteristics of New Refrigerant R410A 11-1-1. What is New Refrigerant R410A? R410A is a new refrigerant that contains two types of pseudo-non-azeotropic refrigerant mixture.
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.
11-3. Tools Specifically for R410A For servicing, use the following tools for R410A Gauge manifold Charging hose Gas leak detector Refrigerant cylinder Charging cylinder Refrigerant recovery unit Vacu.
11-5. 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 "11-3. Tools Specifically for R410A.
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 to the unit.
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 11-6. In Case Refrigerant is Leaking CAUTION Never attempt to charge additional refrigerant when refrigerant has been leaking from the unit.
11-7. Charging Additional Refrigerant 11-7-1. 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.
INSTRUCTION MANUAL KHS1872 + CH1872 KHS2472 + CH2472 (OI-852-6-4180-801-00-2) APPENDIX A A-1.
2 F eatures This air conditioner is an in v er ter type unit that au tomatica lly adjusts capacity as appropriate. Details on these functions are provide d below; ref er to these de scr iptions when using the air conditioner .
3 Contents P age F eatur es ............ ................... ................ ................ .................... ................ ................ 2 Product In f or mation .............. .................... ................ ................ ......
4 Installation Location • W e recommend that this air conditioner be installed pr operly b y qualified installat ion technicians in accorda nce with th e Installation Instructions pro vided with th e unit.
5 Names of P ar ts This illustration is based on the e x ter nal view of a standard model. Consequently , the shape ma y diff er from that of the air conditioner which y ou hav e selected. This air conditioner consists of an indoo r unit and an outdoor unit.
6 Unit Displa y and Operation Button REMO TE CONTROL receiver This section pic ks up infrared signals from t he remote control unit (tr ansmitter). OPERA TION b utton When the remote control cannot be used, pressing this b utton enab les heating and cooling oper ation.
7 Remote Contr ol Unit (Display) (1) Operat ion mode A UT O .............. ................ ........... HEA T ..... ................ ................ ..... MILD DR Y ....................... ........... COOL .............. ................... ........ F AN .
8 Remote Contr ol Unit The illustration abov e pictures the remote control unit after the cov er has been opened. Tr a n s m i t t e r Wh en you press t he buttons on the remote control unit , the mark appears in the displa y to transmit th e setting changes to the receiv er in the air condit ioner .
9 Remote Contr ol Unit (continued) T emperature setting b uttons (TEMP .) Press the b utton to incre ase the set temperatur e. Press the button to reduc e the set tem perature. The tempera ture setting changes b y 1 °C or 2 °F each time on e of the TEMP .
10 Remote Contr ol Unit (continued) Using the Remote Control Unit SENSOR button When yo u press this button (use a small-tipped object such as a ballpoint pen) , the mar k will appear at the displa y . And the room temp erature is detected by the sensor wh ich is built in to the indoor unit and the air condit ioner is controlled accordingly .
11 Using the Remote Cont rol Unit (contin ued) How to Use the Remote Control Un it When using the remo te control unit, alw ays po int the unit’ s transmitter head directly at the air condit ioner’ s receiv er .
12 Operation with the Remote Control Unit 1. A utomatic Operation This unit automatically s witches betw een cooling oper ation and heating ope ration according to the diff erence between the room temperatur e and the temperat ure setting. Check th at the circuit break er on the po wer panel is turned on.
13 Operation with the Remote Contr ol Unit (continued) 2. Manual Operation Check th at the circuit break er on the po wer panel is turned on. If the automat ic operation sett ings of the unit do not meet y our needs , press the setting buttons as descr ibed below and change th e settings as desire d.
14 Operation with the Remote Contr ol Unit (continued) • Choose the best position in the room f or the remote contr ol unit, which also acts as the sensor f or room comf or t and tra nsmits the operating in structions. Once yo u’ve f ound this best position, alwa ys keep the rem ote control unit there .
15 Operation with the Remote Contr ol Unit (continued) 5. Night Setbac k Mode Night Setbac k Mode is used f or saving ene rgy . Press the NIGHT SETBA CK button while operation. The mar k appears in the di splay . T o re lease the nig ht setback function, press the NIGH T SETBACK b utton aga in.
16 Operation with the Remote Contr ol Unit (continued) 6. QUIET Mode QUIET Mode is used to re duce the f an sound of the indoor unit. Press the QUIET b utton. The mark appears in the displa y . T o ca ncel, press QUIET button again . • In QUIET Mode , the f an rotates at a slow er speed than the f an spee d setting.
17 Special Remar ks How it w orks? • Once the room temperature reaches t he lev el that w as set, the unit’ s oper ation frequency is changed auto matically . • Dur ing DR Y operation, the fan speed automat ically runs at lower speed for providin g a comfortable bree ze.
18 Setting the Timer In the descriptions belo w , the f ollowing settings a re used f or the temper ature and time indicato r selector butt on on the bottom front section of the remote contr ol. • T emperature: °F • Time: AM, PM 1. How to set the p resent time (Example) T o set to 10:30 pm.
19 Setting the Timer (continued) 3. How to set the ON time (Example) T o star t operation at 7: 10 am. 4. How to set D AIL Y ON/OFF REPEA T timer (Example) T o star t oper ation at 7:10 am. a nd stop the air condit ioner at 11:00 am. T o cancel a timer program • Press the CANCEL button.
20 Using the 1-Hour OFF Timer Tips f or Energ y Sa ving 1. 1-Hour OFF Timer This function causes the unit to operate for one hour and then stop, regard less of whether the unit is on or off when this button is pressed. The indicator in the displa y indicates that this functi on is operating.
21 Adjusting the Airflo w Direction 1. Horizontal The hori zontal airflow can be adjust ed by moving the vertica l v anes w ith your hands to th e left or r ight. When the humidit y is high, the vertical v anes should be in the f ront position during the coolin g or dehumidifying operation.
22 Operation without the Remote Control Unit Care and Cleaning INDOOR UNIT If y ou hav e lost the remo te control unit or it has troub le, f ollow the steps belo w . When the air conditione r is not running Each time the OPERA TION button is pressed , the type of oper ation conducted is indicated b y the changing co lor of the OPERA TION lamp .
23 Care and Cleaning (continued) Anti-Mold Filter The anti-mold filter behind the air intake grille should be ch eck ed and cleaned at least once e ve r y two weeks . How to remove the anti-mold filter 1. Grasp both ends of the air intake grille, and remo ve it b y opening to wards the f ront and pulling tow ards you.
24 Care and Cleaning (continued) Air Clean Filter The air clean filter remo v es dust and dir t from the air , and red uces odors and smoke from tobacco . This air c lean filter cannot remo ve harmful gases or v apor s nor ventilate air in the room. Y ou must open doors or windows frequentl y when y ou use gas or oil heating appliances.
25 T roub leshooting If your air conditioner does not work pr oper ly , first check the f ollowing points bef ore requesting service. If it still does no t work properly , contact y our dealer or service center .
INSTALLATION INSTRUCTIONS KHS1872 + CH1872 KHS2472 + CH2472 (II-852-6-4189-989-00-3) APPENDIX B A-2.
This air conditioner uses the ne w refr igerant R410A. Refrigerant ser vice valv e siz e = 5/16" NO TE 85264189 989 003 © SANY O 2007 SANY O Commercial Solutions In Canada A Division of SANY O Nor th America Cor poration SANY O Canada Inc.
2 IMPOR T ANT! Please Read Bef ore Star ting This air conditioning system meets strict safety and operating standards. As the installer or service person, it is an impor tant par t of your job to install or service the system so it operates saf ely and efficiently .
3 1. General This booklet briefly outlines where and how to install the air conditioning system. Please read ov er the entire set of instructions for the indoor and outdoor units and mak e sure all accessor y par ts listed are with the system before beginning.
4 1-5. Additional Materials Required f or Installation 1. Refr igeration (armored) tape 2. Insulated staples or clamps for connecting wire (See local codes) 3. Putty 4. Refr igeration lubricant 5. Clamps or saddles to secure refr igerant tubing 2. Installation Site Selection 2-1.
Fig. 5d Air i n take Co n crete or eq u al Abo u t 4" (10 cm) Mi n . 4" (10 cm) A n chor bolt s (4 pc s .) Abo u t 1'4" (40 cm) (CH1872) Fig. 5e Air i n take Co n crete or eq u al Abo u t 6" (15 cm) Mi n . 6" (15 cm) A n chor bolt s (4 pc s .
6 S et s crew o n ly f or tra ns portatio n Fig. 6 Rear pa n el mark s Fig. 7 Left tubing Right tubing Downward tubing Right-rear tubing (recommended) Left-rear tubing Fig. 8 3. How to Install the Indoor Unit 3-1. Remove the Rear P anel fr om the Unit (1) Remo ve and discard the set scre w on the rear panel.
7 I n door s ide O u tdoor s ide Hole should be made at a slight downw ard slant to the outdoor side. NO TE Fig. 10 Plastic cover INSIDE OUTSIDE W all Slight angle PVC pipe (Locally purchased) Fig. 12 PVC pipe (Locally p u rcha s ed) C u t at s li g ht a n g le Fig.
8 3-4. Remove the Grille to Install the Indoor Unit Basically , these models can be installed and wired with- out removing the grille. If access to an y inter nal par t is needed, f ollow the steps as giv en below .
9 3-5. Shape the Indoor Side T ubing (1) Arrangement of tubing b y direction a) Right or left tubing Cut out the cor ner of the right/left frame with a hacksa w 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.
(A)+(B) (A) Po wer Supply Wiring Length (ft) (C) Control Fuse or Circuit AW G (B) Po wer Line Length (ft) Line Length (ft) Model (#14) (#12) (#14) Breaker Capacity CH1872, CH2472 131 (Max.) 230 (Max.) 98 (Max.) 20A 10 3-7. Recommended Wire Length and Diameter Regulations on wiring diameter differ from locality to locality .
11 3-8. Wiring Instructions for Inter -unit Connections (1) Inser t the inter-unit wir ing (according to local codes) into the through-the-wall PVC pipe . Run the wir ing tow ard the indoor side allowing appro x. 10" (25 cm) to e xtend from the wall f ace.
12 When connecting each power wire to the corresponding terminal, follow the instructions “How to connect wiring to the terminal” and fasten the wire securely tight with the fixing screw of the terminal plate.
13 3-9. Mounting (1) T o install the indoor unit, mount the indoor unit onto the 2 tabs on the upper par t 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 f asten to the 2 tabs on the lower par t of the rear plate.
14 Hole in wall Bent part Narrow tube Wide tube Rear panel Fig. 38 Drain cap Drain hose Fig. 39 I Left-side tubing (1) Lead the tubing and drain hose through the wall, allowing sufficient length f or connection. Then bend the tubing using a tube bender to make the attach- ment.
15 T o unmount indoor unit Press the 2 L L mar ks on the low er par t of the indoor unit and unlatch the tabs. Then lift the indoor unit and unmount. (Fig. 42) 3-10. Drain Hose a) The drain hose should be slanted downw ard to the outdoors. (Fig. 43) b) Ne ver f orm a trap in the course of the hose.
16 4. How to Install the Outdoor Unit First ref er to Section 2. Installation Site Selection. 4-1. Wiring Instructions for the Outdoor Unit Regulations on wire size diff er from locality to locality . F or field wiring requirements, please ref er to your local elec- trical codes.
17 5. Refrigerant T ubing 5-1. Use of the Flaring Method Many of the con ventional split system air conditioners emplo y the flaring method to connect refr igerant tubes which run between indoor and outdoor units. In this method, the copper tubes are flared at each end and connected with flare nuts.
18 5-4. Connecting T ubing between Indoor and Outdoor Units a) Tightly connect the indoor side refrigerant tubing exten- ded from the wall with the outdoor side tubing.
19 6. Air Purging Air and moisture remaining in the refrigerant system hav e undesirab le effects as indicated belo w . Therefore, they m ust be purged completely .
20 (5) With the vacuum pump still running, close the “Lo” knob of the manif old valv e. Then stop the v acuum pump . (6) With the accessor y hex wrench, turn the valv e stem on the narrow tube service valv e counter-clockwise by 90 deg rees (1/4 tur n) f or 10 seconds, and then turn the stem clockwise to close it again.
21 How to T est Run the Air Conditioner After turning on power to the air conditioner , use the remote controller and f ollow the steps below to conduct the test run. (1) Set the remote controller in T est Run mode. (Fig. 59a) a) Press and hold the ION button.
22 I Pump Down Pump down means collecting all refrigerant gas in the system back into the outdoor unit without losing an y of the gas. Pump do wn is used when the unit is to be mov ed or bef ore ser vicing the refrigerant circuit. Pump Down Pr ocedure Be sure to carry out pump down with the unit in cooling mode.
23 7 . Remote Control Unit Installation P osition The remote control unit can be operated from either a non-fix ed position or a wall-mounted position.
24 8. Address Switch 8-1. Address Setting of the Remote Contr ol Unit The address can be set in order to pre vent interf erence between remote controllers when two San yo indoor units are installed near each other . The address is normally set to “A.
SANYO Commercial Solutions A Division of SANYO North America Corporation 1300 Michael Drive, Suite A Wood Dale, IL 60191, U.S.A. Sanyo Canada Inc. 1-300 Applewood Crescent, Concord, Ontario L4K 5C7, CANADA Jan.
An important point after buying a device Sanyo CH2472 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Sanyo CH2472 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Sanyo CH2472 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Sanyo CH2472 you will learn all the available features of the product, as well as information on its operation. The information that you get Sanyo CH2472 will certainly help you make a decision on the purchase.
If you already are a holder of Sanyo CH2472, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Sanyo CH2472.
However, one of the most important roles played by the user manual is to help in solving problems with Sanyo CH2472. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Sanyo CH2472 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
