Argo AS 425 C Technical Data & Service Manual
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Argo AS 425 C Technical Data & Service Manual

Split system air conditioner
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TECHNICAL DATA

&

SERVICE MANUAL

AS 425 C / AER 525 SCE
AS 425 C / AER 525 SC3E
AS 425 C / AER 525 SCL3E
AS 436 C / AER 536 SC3E
AS 436 C / AER 536 SCL3E
AS 448 C / AER 548 SC3E
AS 448 C / AER 548 SCL3E
AD 425 CW / AER 525 SCE
AD 425 CW / AER 525 SC3E
AD 425 CW / AER 525 SCL3E
AD 436 CW / AER 536 SC3E
AD 436 CW / AER 536 SCL3E
AD 448 CW / AER 548 SC3E
AD 448 CW / AER 548 SCL3E
SPLIT SYSTEM AIR CONDITIONER
AS 425 C
AS 436 C
AS 448 C
AD 425 CW
AD 436 CW
AD 448 CW
AC 425 C / AER 525 SCE
AC 425 C / AER 525 SC3E
AC 425 C / AER 525 SCL3E
AC 436 C / AER 536 SC3E
AC 436 C / AER 536 SCL3E
AC 448 C / AER 548 SC3E
AC 448 C / AER 548 SCL3E
Indoor Unit
AC 425 C
AC 436 C
AC 448 C
0.8180.229.0
Outdoor Unit
AER 525 SCE - AER 525 SC3E
AER 525 SCL3E
AER 536 SC3E - AER 548 SC3E
AER 536 SCL3E - AER 548 SCL3E
07/02
Section
1
2
3
4
5

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Summary of Contents for Argo AS 425 C

  • Page 1: Technical Data

    TECHNICAL DATA & SERVICE MANUAL AC 425 C / AER 525 SCE AS 425 C / AER 525 SCE AC 425 C / AER 525 SC3E AS 425 C / AER 525 SC3E AC 425 C / AER 525 SCL3E...
  • Page 2 Important Please Read Before Starting When Installing …………………………………………………………………… …In a Room This air conditioning system meets strict safety and Properly insulate any tubing run inside a room to prevent operating standards. As the installer or service person, it “sweating” that can cause dripping and water damage to is an important part of your job to install or service the walls and floors.

  • Page 3: Table Of Contents

    1. SPECIFICATIONS Unit Specifications ................. I - 4-Way Air Discharge Semi-concealed Type ........... I - Ceiling Mounted Type ................I - Concealed Duct Type ................I - 16 Major Component Specifications ............. I - 30 (A) Indoor Units ..................I - 30 (B) Outdoor Units ..................

  • Page 4: Unit Specifications

    1-1 Unit Specifications 4-Way Air Discharge Semi-concealed Type MODEL No. Indoor Unit AS425C Outdoor Unit AER525SCE POWER SOURCE 220 - 230 - 240 V / 1 phase / 50 Hz PERFORMANCE Cooling Capacity BTU / h 25,000 Air circulation (Hi / Me / Lo) 1,140 / 1,020 / 840 Moisture removal (High) Liters/h...
  • Page 5 MODEL No. Indoor Unit AS 425C Outdoor Unit AER525SC3E POWER SOURCE 380 - 400 - 415 V / 3N / 50 Hz PERFORMANCE Cooling Capacity BTU / h 25,000 Air circulation (Hi / Me / Lo) 1,140 / 1,020 / 840 Moisture removal (High) Liters/h ELECTRICAL RATINGS...
  • Page 6 MODEL No. Indoor Unit AS425C Outdoor Unit AER525SCL3E POWER SOURCE 380 - 400 - 415 V / 3N / 50 Hz PERFORMANCE Cooling Capacity BTU / h 25,000 Air circulation (Hi / Me / Lo) 1,140 / 1,020 / 840 Moisture removal (High) Liters/h ELECTRICAL RATINGS...
  • Page 7 MODEL No. Indoor Unit AS436C Outdoor Unit AER536SC3E POWER SOURCE 380 - 400 - 415 V / 3N / 50 Hz PERFORMANCE Cooling Capacity 10.6 BTU / h 36,000 Air circulation (Hi / Me / Lo) 1,920 / 1,680 / 1,320 Moisture removal (High) Liters/h ELECTRICAL RATINGS...
  • Page 8 MODEL No. Indoor Unit AS436C Outdoor Unit AER536SCL3E POWER SOURCE 380 - 400 - 415 V / 3N / 50 Hz PERFORMANCE Cooling Capacity 10.6 BTU / h 36,000 Air circulation (Hi / Me / Lo) 1,920 / 1,680 / 1,320 Moisture removal (High) Liters/h ELECTRICAL RATINGS...
  • Page 9 MODEL No. Indoor Unit AS448C Outdoor Unit AER548SC3E POWER SOURCE 380 - 400 - 415 V / 3N / 50 Hz PERFORMANCE Cooling Capacity 12.6 BTU / h 43,000 Air circulation (Hi / Me / Lo) 1,920 / 1,680 / 1,320 Moisture removal (High) Liters/h ELECTRICAL RATINGS...
  • Page 10 MODEL No. Indoor Unit AS448C Outdoor Unit AER548SCL3E POWER SOURCE 380 - 400 - 415 V / 3N / 50 Hz PERFORMANCE Cooling Capacity 12.6 BTU / h 43,000 Air circulation (Hi / Me / Lo) 1,920 / 1,680 / 1,320 Moisture removal (High) Liters/h ELECTRICAL RATINGS...

  • Page 11: Ceiling Mounted Type

    1-1 Unit Specifications Ceiling Mounted Type MODEL No. Indoor Unit AC425C Outdoor Unit AER525SCE POWER SOURCE 220 - 230 - 240 V / 1 phase / 50 Hz PERFORMANCE Cooling Capacity BTU / h 25,000 Air circulation (Hi / Me / Lo) 1,080 / 960 / 840 Moisture removal (High) Liters/h...
  • Page 12 MODEL No. Indoor Unit AC425C Outdoor Unit AER525SC3E POWER SOURCE 380 - 400 - 415 V / 3N / 50 Hz PERFORMANCE Cooling Capacity BTU / h 25,000 Air circulation (Hi / Me / Lo) 1,080 / 960 / 840 Moisture removal (High) Liters/h ELECTRICAL RATINGS...
  • Page 13 MODEL No. Indoor Unit AC425C Outdoor Unit AER525SCL3E POWER SOURCE 380 - 400 - 415 V / 3N / 50 Hz PERFORMANCE Cooling Capacity BTU / h 25,000 Air circulation (Hi / Me / Lo) 1,080 / 960 / 840 Moisture removal (High) Liters/h ELECTRICAL RATINGS...
  • Page 14 MODEL No. Indoor Unit AC436C Outdoor Unit AER536SC3E POWER SOURCE 380 - 400 - 415 V / 3N / 50 Hz PERFORMANCE Cooling Capacity 10.6 BTU / h 36,000 Air circulation (Hi / Me / Lo) 1,080 / 1,560 / 1,200 Moisture removal (High) Liters/h ELECTRICAL RATINGS...
  • Page 15 MODEL No. Indoor Unit AC436C Outdoor Unit AER536SCL3E POWER SOURCE 380 - 400 - 415 V / 3N / 50 Hz PERFORMANCE Cooling Capacity 10.6 BTU / h 36,000 Air circulation (Hi / Me / Lo) 1,080 / 1,560 / 1,200 Moisture removal (High) Liters/h ELECTRICAL RATINGS...
  • Page 16 MODEL No. Indoor Unit AC448C Outdoor Unit AER548SCE POWER SOURCE 380 - 400 - 415 V / 3N / 50 Hz PERFORMANCE Cooling Capacity 12.6 BTU / h 43,000 Air circulation (Hi / Me / Lo) 1,920 / 1,680 / 1,320 Moisture removal (High) Liters/h ELECTRICAL RATINGS...
  • Page 17 MODEL No. Indoor Unit AC448C Outdoor Unit AER548SCL3E POWER SOURCE 380 - 400 - 415 V / 3N / 50 Hz PERFORMANCE Cooling Capacity 12.6 BTU / h 43,000 Air circulation (Hi / Me / Lo) 1,920 / 1,680 / 1,320 Moisture removal (High) Liters/h ELECTRICAL RATINGS...

  • Page 18: Concealed Duct Type

    1-1 Unit Specifications Concealed Duct Type MODEL No. Indoor Unit AD425CW Outdoor Unit AER525SCE POWER SOURCE 220 - 230 - 240 V / 1 phase / 50 Hz PERFORMANCE Cooling Capacity BTU / h 25,000 Air circulation (Hi / Me / Lo) 1,080 / 900 / 780 Moisture removal (High) Liters/h...
  • Page 19 MODEL No. Indoor Unit AD425CW Outdoor Unit AER525SC3E POWER SOURCE 380 - 400 - 415 V / 3N / 50 Hz PERFORMANCE Cooling Capacity BTU / h 25,000 Air circulation (Hi / Me / Lo) 1,080 / 900 / 780 Moisture removal (High) Liters/h External static pressure (High)
  • Page 20 MODEL No. Indoor Unit AD425CW Outdoor Unit AER525SCL3E POWER SOURCE 380 - 400 - 415 V / 3N / 50 Hz PERFORMANCE Cooling Capacity BTU / h 25,000 Air circulation (Hi / Me / Lo) 1,080 / 900 / 780 Moisture removal (High) Liters/h External static pressure (High)
  • Page 21 MODEL No. Indoor Unit AD436CW Outdoor Unit AER536SC3E POWER SOURCE 380 - 400 - 415 V / 3N / 50 Hz PERFORMANCE Cooling Capacity 10.6 BTU / h 36,000 Air circulation (Hi / Me / Lo) 1,080 / 1,560 / 1,260 Moisture removal (High) Liters/h External static pressure (High)
  • Page 22 MODEL No. Indoor Unit AD436CW Outdoor Unit AER536SCL3E POWER SOURCE 380 - 400 - 415 V / 3N / 50 Hz PERFORMANCE Cooling Capacity 10.6 BTU / h 36,000 Air circulation (Hi / Me / Lo) 1,800 / 1,560 / 1,260 Moisture removal (High) Liters/h External static pressure (High)
  • Page 23 MODEL No. Indoor Unit AD448CW Outdoor Unit AER548SC3E POWER SOURCE 380 - 400 - 415 V / 3N / 50 Hz PERFORMANCE Cooling Capacity 12.6 BTU / h 43,000 Air circulation (Hi / Me / Lo) 1,980 / 1,800 / 1,500 Moisture removal (High) Liters/h External static pressure (High)
  • Page 24 MODEL No. Indoor Unit AD448CW Outdoor Unit AER548SCL3E POWER SOURCE 380 - 400 - 415 V / 3N / 50 Hz PERFORMANCE Cooling Capacity 12.6 BTU / h 43,000 Air circulation (Hi / Me / Lo) 1,980 / 1,800 / 1,500 Moisture removal (High) Liters/h External static pressure (High)
  • Page 25 1-2 Major Component Specifications (A) Indoor Unit AS425C MODEL No. Source 220 - 230 - 240 V / 1 phase / 50Hz Remote Controller (Accessory) RCS - 5PS3E Controller P.C.B. Ass'y CR - X363GS Switch Ass'y SW - X363GS Fan (Number…diameter) Turbo (1 …...
  • Page 26 (A) Indoor Unit AS436C AS448C MODEL No. Source 220 - 230 - 240 V / 1 phase / 50Hz Remote controller (Accessory) REM CLR A Controller P.C.B. Ass'y CR - X363GS Switch ass'y SW - X363GS Fan (Number…diameter) Turbo (1 … ø 490) Fan motor Model…Nominal output SFG6X - 61A3P …...
  • Page 27 (A) Indoor Unit AC425C MODEL No. Source 220 - 230 - 240 V / 1 phase / 50Hz Remote Controller (Accessory) REM CLR A Controller P.C.B. Ass'y CR - X363GS Switch Ass'y – SW - X363GS Fan (Number…diameter) Centrifugal (4 … ø 130) Fan motor Model…Nominal output SR4X - 51A6P …...
  • Page 28 (A) Indoor Unit AC436C MODEL No. Source 220 - 230 - 240 V / 1 phase / 50Hz Remote Controller (Accessory) REM CLR A Controller P.C.B. Ass'y CR - X363GS Switch Ass'y – SW - X363GS Fan (Number…diameter) Centrifugal (4 … ø 150) Fan motor Model…Nominal output KFG4X - 101C6P …...
  • Page 29 (A) Indoor Unit AC448C MODEL No. Source 220 - 230 - 240 V / 1 phase / 50Hz Remote Controller (Accessory) REM CLR A Controller P.C.B. Ass'y CR - X363GS Switch Ass'y – SW - X363GS Fan (Number…diameter) Centrifugal (4 … ø 150) Fan motor Model…Nominal output KFG4X - 101C6P …...
  • Page 30 (A) Indoor Units MODEL No. AD425CW Source 220 - 230 - 240 V / 1 phase / 50Hz Controller P.C.B. Ass’y CR-X363GS (Microprocessor) Fan (Number…diameter) Centrifugal (2 … ø 190) Fan motor Model…Nominal output KFG4X-71B5P … 70 W Source 220 - 230 - 240 V / 1 phase / 50 Hz No.
  • Page 31 (A) Indoor Units MODEL No. AD436CW Source 220 - 230 - 240 V / 1 phase / 50Hz Controller P.C.B. Ass’y CR-X363GS (Microprocessor) Fan (Number…diameter) Centrifugal (3 … ø 190) Fan motor Model…Nominal output KFC4X-141A5P…160 W Source 220 - 230 - 240 V / 1 phase / 50 Hz No.
  • Page 32 (A) Indoor Units MODEL No. AD448CW Source 220 - 230 - 240 V / 1 phase / 50Hz Controller P.C.B. Ass’y CR-X363GS (Microprocessor) Fan (Number…diameter) Centrifugal (3 … ø 190) Fan motor Model…Nominal output KFC4X-141A5P…160 W Source 220 - 230 - 240 V / 1 phase / 50 Hz No.

  • Page 33: Major Component Specifications

    1-2 Major Component Specifications (B) Outdoor Unit MODEL No. AER525SCE Source 220 - 230 - 240 V / 1 phase / 50 Hz Controller P.C.B. Ass'y – Control circuit fuse – Compressor Rotary (Hermetic) Model ..number C - RN220H5B Source 220 - 240 V / 1 phase / 50 Hz Nominal output...
  • Page 34 1-2 Major Component Specifications (B) Outdoor Unit MODEL No. AER525SC3E Source 380 - 400 - 415 V / 3 phase / 50 Hz Controller P.C.B. Ass'y – Control circuit fuse – Compressor Rotary (Hermetic) Model ..number C - RN223H8D Source 380 - 400 - 415 V / 3 phase / 50 Hz Nominal output...
  • Page 35 1-2 Major Component Specifications (B) Outdoor Unit MODEL No. AER525SCL3E Source 380 - 400 - 415 V / 3 phase / 50 Hz Controller P.C.B. Ass'y CR - CR254GL8 (Microprocessor) Control circuit fuse 250 V, 3.15 A Compressor Rotary (Hermetic) Model ..
  • Page 36 1-2 Major Component Specifications (B) Outdoor Unit MODEL No. AER536SC3E AER548SC3E Source 380 - 400 - 415 V / 3 phase / 50 Hz Controller P.C.B. Ass'y – Control circuit fuse – Compressor Scroll (Hermetic) Model ..number C - SBN303H8A C - SBN373H8A Source 380 - 400 - 415 V / 3 phase / 50 Hz...
  • Page 37 1-2 Major Component Specifications (B) Outdoor Unit MODEL No. AER536SCL3E AER548SCL3E Source 380 - 400 - 415 V / 3 phase / 50 Hz Controller P.C.B. Ass'y CR - CR254GL8 (Microprocessor) Control circuit fuse 250 V, 3.15 A Compressor Scroll (Hermetic) Model ..
  • Page 38 1-3 Other Component Specifications (A) Indoor Unit AS425C AS436C AS448C Power Transformer ATR - I75A AC 230 V, 50 Hz Rated Primary Secondary 10.6 V, 0.93 A Capacity 9.85 VAC Ω Coil resistance WHT – WHT : 96.5 BRN – BRN : 0.8 (at 20°C) °C Thermal cut off temperature Thermistor (Coil sensor)
  • Page 39 (A) Indoor Unit MODEL No. AC425C AC436C AC448C Power Transformer ATR - I75B AC 230 V, 50 Hz Rated Primary Secondary 10.6 V, 0.93 A Capacity 9.86 VAC Ω Coil resistance WHT – WHT : 101 BRN – BRN : 0.6 (at 20°C) °C Thermal cut off temperature Thermistor (Coil sensor)

  • Page 40: (A) Indoor Units

    (A) Indoor Units MODEL NO. Indoor Unit AD425CW - 448CW Power Transformer ATR - I75B Rated Primary 230 V, 50Hz VAC, Hz Secondary 10.6 V, 0.93 A 9.85 VAC Ω Coil resistance WHT – WHT : 96.5 BRN – BRN : 0.8 °C Thermal cut off temperature Thermistor (Coil sensor) : TH1...

  • Page 41: (B) Outdoor Units

    1-3 Other Component Specifications (B) Outdoor Unit MODEL No. AER525SCE Compressor Motor Mgnetic Contactor FC - 1SZ607 Coil rated AC 220 - 240 V, 50 Hz Ω 828 ± 15 % Coil resistance (at 20°C) Contact rated V, A AC 440 V, 13A Auxiliary relay HH62S Coil rated...

  • Page 42: Outdoor Units

    (B) Outdoor Unit MODEL No. AER525SC3E AER536SC3E AER548SC3E Compressor Motor Mgnetic Contactor FW - 1SZ607A Coil rated AC 220 - 240 V, 50 Hz Ω 828 ± 15 % Coil resistance (at 20°C) Contact rated V, A AC 440 V, 13A Auxiliary relay RDR - S400 Coil rated...

  • Page 43: Dimensional Data

    1-4 Dimensional Data (A) Indoor Units : 4-Way Air Discharge Semi-concealed Type 25 Type 820 (Ceiling opening) 590 (Suspention bolt pitch) Air intake grille Air outlet Refrigerant liquid line [ø 9.52 (In case of 25 type, use the tube connector.)] Refrigerant gas line ø...
  • Page 44 (A) Indoor Units : 4-Way Air Discharge Semi-concealed Type 36, 48 Type 820 (Ceiling opening) 590 (Suspention bolt pitch) Air intake grille Air outlet Refrigerant liquid line (ø9.52) Refrigerant gas line (ø19.05) Drain connection Power supply entry For discharge duct Humidifier (option) mounting hole Suspension bolt mounting 0183_X_I...
  • Page 45 (A) Indoor Units : Ceiling Mounted Type 25, 36, 48 Type Holes in the rear unit (View from front) Hole for wall-through piping (View from front) C (Suspension bolt hole pitch) Air outlet or more or more Front (Service space) (Service space) Air intake Dimension : mm...
  • Page 46 (A) Indoor Units : Concealed Duct Type 25 Type (Air outlet duct flange) (Suspension bolt pitch) Refrigerant liquid line ø9.52 (narrow tube) (Use the tube connector) Refrigerant gas line ø15.88 (wide tube) Upper drain port (O.D. 32 mm) Bottom drain port (O.D. 26 mm) Suspension lug Power supply outlet (2-ø30) Fresh air intake port (ø150)
  • Page 47 (A) Indoor Units : Concealed Duct Type 36, 48 Type (Air outlet duct flange) (Suspension bolt pitch) Refrigerant liquid line ø9.52 (narrow tube) Refrigerant gas line ø19.05 (wide tube) Upper drain port (O.D. 32 mm) Bottom drain port (O.D. 26 mm) Suspension lug Power supply outlet (2-ø30) Fresh air intake port (ø150)
  • Page 48 Flange for the air intake duct (Field supply) : For Concealed Duct Type 260 (O.D.) 1766_U_I (mm) 9, 12, 18 type 698 200 3 200P = 600 170 – 25 type 180 5 180P = 900 120 245 (245 1) 36, 48 type 1,478 1,442 230 6 230P = 1,380 120...
  • Page 49 (B) Outdoor Units : AER525SCE, AER525SC3E, AER525SCL3E Dimension : mm Hole for anchor bolt (4-ø13) Refrigerant tube joint (narrow tube) Flare connection 1/4 in (6.35 mm) Refrigerant tube joint (wide tube) Flare connection 5/8 in (15.88 mm) Refrigerant tubing inlet Power supply inlet –...
  • Page 50 (B) Outdoor Units : AER536SC3E, AER536SCL3E AER548SC3E, AER548SCL3E Dimension : mm Hole for anchor bolt (4-ø13) Refrigerant tube joint (narrow tube) Flare connection 3/8 in (9.52 mm) Refrigerant tube joint (wide tube) Flare connection 3/4 in (19.05 mm) Refrigerant tubing inlet Power supply inlet –...
  • Page 51 1-5 Refrigerant Flow Diagram Outdoor Units : AER525SCE Indoor Unit : 25 Type AER525SC3E Compressor Accumulator Gas line service valve Gas line O.D. nipple ø15.88mm (5/8") Heat exchanger Heat exchanger Distributor Capillary tube Liquid line service High valve pressure Liquid line switch O.D.
  • Page 52 1-5 Refrigerant Flow Diagram Outdoor Units : AER525SCL3E Indoor Unit : 25 Type Compressor Accumulator Accumulator Gas line service valve Gas line O.D. nipple ø15.88mm (5/8") Solenoid valve Heat exchanger Heat exchanger Distributor Capillary tube Liquid line service High valve pressure Liquid line switch...

  • Page 53: (A) Indoor Units

    1-5 Refrig erant Flow Diagram Outdoor Units : AER536SC(L)3E Indoor Units : 36, 48 Type AER548SC(L)3E Compressor Low pressure switch Accumulator Gas line service High valve Gas line pressure O.D. nipple switch ø19.05mm (3/4") Heat exchanger Heat exchanger Distributor Capillary tube Liquid line service...
  • Page 54 1-7 Cooling Capacity Indoor Unit : AS425C Outdoor Unit : AER525SCE RATING CAPACITY : 7.3 kW AIR FLOW RATE : 1140 CMH EVAPORATOR CONDENSER ENT. TEMP. °C AMBIENT TEMP °C 6.95 6.68 6.40 6.15 5.99 2.24 2.37 2.49 2.60 2.65 6.68 6.15 5.99...

  • Page 55: Cooling Capacity

    1-7 Cooling Capacity Indoor Unit : AS425C Outdoor Unit : AER525SC(L)3E RATING CAPACITY : 7.3 kW AIR FLOW RATE : 1140 CMH EVAPORATOR CONDENSER ENT. TEMP. °C AMBIENT TEMP °C 6.95 6.68 6.40 6.15 5.99 2.15 2.28 2.39 2.50 2.55 6.68 6.15 5.99...
  • Page 56 1-7 Cooling Capacity Indoor Unit : AS436C Outdoor Unit : AER536SC(L)3E RATING CAPACITY : 10.6 kW AIR FLOW RATE : 1920 CMH EVAPORATOR CONDENSER ENT. TEMP. °C AMBIENT TEMP °C 10.09 9.70 9.30 8.93 8.69 3.17 3.36 3.52 3.68 3.74 8.93 8.69 10.09...
  • Page 57 1-7 Cooling Capacity Indoor Unit : AS448C Outdoor Unit : AER548SC(L)3E RATING CAPACITY : 12.6 kW AIR FLOW RATE : 1920 CMH EVAPORATOR CONDENSER ENT. TEMP. °C AMBIENT TEMP °C 12.00 11.53 11.05 10.61 10.33 3.67 3.89 4.07 4.26 4.34 10.8 10.5 10.3...
  • Page 58 1-7 Cooling Capacity Indoor Unit : AC425C Outdoor Unit : AER525SCE RATING CAPACITY : 7.3 kW AIR FLOW RATE : 1080 CMH EVAPORATOR CONDENSER ENT. TEMP. °C AMBIENT TEMP °C 6.95 6.68 6.40 6.15 5.99 2.24 2.37 2.49 2.60 2.65 6.68 6.15 5.99...
  • Page 59 1-7 Cooling Capacity Indoor Unit : AC425C Outdoor Unit : AER525SC(L)3E RATING CAPACITY : 7.3 kW AIR FLOW RATE : 1080 CMH EVAPORATOR CONDENSER ENT. TEMP. °C AMBIENT TEMP °C 6.95 6.68 6.40 6.15 5.99 2.15 2.28 2.39 2.50 2.55 6.68 6.15 5.99...
  • Page 60 1-7 Cooling Capacity Indoor Unit : AC436C Outdoor Unit : AER536SC(L)3E RATING CAPACITY : 10.6 kW AIR FLOW RATE : 1800 CMH EVAPORATOR CONDENSER ENT. TEMP. °C AMBIENT TEMP °C 10.09 9.70 9.30 8.93 8.69 3.17 3.36 3.52 3.68 3.74 8.93 8.69 10.09...
  • Page 61 1-7 Cooling Capacity Indoor Unit : AC448C Outdoor Unit : AER548SC(L)3E RATING CAPACITY : 12.6 kW AIR FLOW RATE : 1920 CMH EVAPORATOR CONDENSER ENT. TEMP. °C AMBIENT TEMP °C 12.00 11.53 11.05 10.61 10.33 3.67 3.89 4.07 4.26 4.34 10.2 11.2 10.7...
  • Page 62 1-7 Cooling Capacity Indoor Unit : AD425CW Outdoor Unit : AER525SCE RATING CAPACITY : 7.3 kW AIR FLOW RATE : 1080 CMH EVAPORATOR CONDENSER ENT. TEMP. °C AMBIENT TEMP °C 6.95 6.68 6.40 6.15 5.99 2.24 2.37 2.49 2.60 2.65 6.95 6.68 6.15...
  • Page 63 1-7 Cooling Capacity Indoor Unit : AD425CW Outdoor Unit : AER525SC(L)3E RATING CAPACITY : 7.3 kW AIR FLOW RATE : 1080 CMH EVAPORATOR CONDENSER ENT. TEMP. °C AMBIENT TEMP °C 6.95 6.68 6.40 6.15 5.99 2.15 2.28 2.39 2.50 2.55 6.95 6.68 6.15...
  • Page 64 1-7 Cooling Capacity Indoor Unit : AD436CW Outdoor Unit : AER536SC(L)3E RATING CAPACITY : 10.6 kW AIR FLOW RATE : 1800 CMH EVAPORATOR CONDENSER ENT. TEMP. °C AMBIENT TEMP °C 10.09 9.70 9.30 8.93 8.69 3.17 3.36 3.52 3.68 3.74 8.93 8.69 10.09...
  • Page 65 1-7 Cooling Capacity Indoor Unit : AD448CW Outdoor Unit : AER548SC(L)3E RATING CAPACITY : 12.6 kW AIR FLOW RATE : 1980 CMH EVAPORATOR CONDENSER ENT. TEMP. °C AMBIENT TEMP °C 12.00 11.53 11.05 10.61 10.33 3.67 3.89 4.07 4.26 4.34 10.2 11.2 10.7...
  • Page 66 COOLING CAPACITY (Low ambient model) Outdoor unit : AER525SCL3E Outdoor Fan tap –10 Outdoor temperature °C (DB) Outdoor unit : AER536SCL3E Outdoor Fan tap –10 Outdoor temperature °C (DB) – I-64 –...
  • Page 67 COOLING CAPACITY (Low ambient model) Outdoor unit : AER548SCL3E Outdoor Fan tap –10 Outdoor temperature °C (DB) NOTE 1. According to outdoor air intake temp °C (DB) rises. Cooling capacity and Comp. input vary. 2. These characteristics are based on : a.
  • Page 68 1-8 Noise Criterion Curves 4-Way Air Discharge Semi-concealed Type MODEL : AS425C MODEL : AS436C, AS448C SOUND LEVEL : HIGH 37 dB(A), NC 30 SOUND LEVEL : HIGH 43 dB(A), NC 36 31 dB(A), NC 22 36 dB(A), NC 24 CONDITION : Center, Under the unit 1.5 m CONDITION...

  • Page 69: Ceiling Mounted Type

    Ceiling Mounted Type MODEL : AC425C MODEL : AC436C SOUND LEVEL : HIGH 39 dB(A), NC 34 SOUND LEVEL : HIGH 42 dB(A), NC 36 34 dB(A), NC 26 35 dB(A), NC 28 CONDITION : Distance 1 m, Under the unit 1 m CONDITION : Distance 1 m, Under the unit 1 m SOURCE...

  • Page 70: Concealed Duct Type

    Concealed Duct Type MODEL : AD425CW MODEL : AD436CW SOUND LEVEL : HIGH 34 dB(A), NC 22 / LOW 27 dB(A), NC 18 SOUND LEVEL : HIGH 38 dB(A), NC 30 / LOW 31 dB(A), NC 21 CONDITION : Under the unit 1.5 m CONDITION : Under the unit 1.5 m SOURCE...
  • Page 71 Outdoor Units MODEL : AER525SCE, AER525SC(L)3E MODEL : AER536SC(L)3E SOUND LEVEL : 52 dB(A), NC 44 SOUND LEVEL : 53 dB(A), NC 45 CONDITION : Distance 1m, Height 1m CONDITION : Distance 1m, Height 1m SOURCE : 220 - 230 - 240 V, 1 Phase, 50 Hz SOURCE : 380 - 400 - 415 V, 3 Phase, 50 Hz 380 - 400 - 415V, 3 Phase, 50 Hz...

  • Page 72: Indoor Fan Performance

    1-9 Indoor Fan Performance Concealed Duct Type If external static pressure is too great (due to long Electrical component box extension of ducts, for example), the air flow volume Booster cable may drop too low at each air outlet. This problem may Booster cable be solved by increasing the fan speed using the motor...

  • Page 73: Air Throw Distance Chart

    1-10 Air throw Distance Chart 4-Way Air Discharge Semi-concealed Type Model: 25 Type HORIZONTAL DISTANCE (m) AXIS AIR VELOCITY 0276_X_I Model: 36, 48 Type HORIZONTAL DISTANCE (m) AXIS AIR VELOCITY 0277_X_I : LOUVER ANGLE 20˚ in Cooling mode : LOUVER ANGLE 60˚ in Heating mode Condition Fan Speed : Hi Room air temp.
  • Page 74 1-10 Air throw Distance Chart Ceiling Mounted Type Model: 25 Type HORIZONTAL DISTANCE (m) AXIS AIR VELOCITY 1225_T_I Model: 36 Type HORIZONTAL DISTANCE (m) AXIS AIR VELOCITY 1226_T_I Model: 48 Type HORIZONTAL DISTANCE (m) AXIS AIR VELOCITY COOLING HEATING FAN SPEED HIGH HIGH ROOM AIR TEMP.

  • Page 75: Installation Instruction

    1-11. Installation Instruction Tubing Length Refrigerant tubing between the indoor and outdoor • Tubing length (L) INDOOR units should be kept as short as possible. UNIT • The length of the refrigerant tubing between thein- door and outdoor units is restricted by the eleva- tion difference between the 2 units.
  • Page 76 Installation Site Selection Ceiling-Mounted Type Indoor Unit Ceiling AVOID: • areas where leakage of flammable gas may be Wall expected. • places where large amounts of oil mist exist. 25 cm min. 25 cm min. Front view • direct sunlight. NOTE •...
  • Page 77 Exhaust fan Outdoor Unit Hot air AVOID: Heat source • heat sources, exhaust fans, etc. Out- • damp, humid or uneven locations. door unit • choose a place as cool as possible. 0591_C_I • choose a place that is well ventilated Dimension •...
  • Page 78 Shield for Upward Exhaust Discharge It is necessary for you to install an air discharge Air discharge chamber (field supply) to direct exhaust from the fan upward if: it is difficult to provide a space of min. 50 cm between the air discharge outlet and a obstacle. the air discharge outlet faces a walkway where it may blow warm air onto passersby.

  • Page 79: Electrical Wiring

    Electrical Wiring If the respective phases of the 3-phase power wiring are not connected correctly, a reverse • General Precautions on Wiring phase will occur and the compressor will not Before wiring, confirm the rated voltage of the start running. If this happens, swap over 2 of unit as shown on its nameplate, then carry out the 3 phases (L1, L2, and L3).
  • Page 80 NOTE To access the electrical component box, open the air intake grille and remove the electrical component box cover. Wiring System Diagrams NOTE Outdoor Unit : “—SC”, models Single phase For accordance with conformity of EC Directive No. 50 Hz, 220 – 240 V 89/336/EEC, supply connection at the time of installa- tion work it should be consider guidance showing Indoor Unit...

  • Page 81: Electrical Characteristics

    Electrical characteristics Indoor model : AS425C Outdoor model : AER525SCE Indoor Unit Outdoor Unit Complete Unit Fan Motor Compressor Fan Motor Performance at 220-240V / 1 phase / 50Hz 220-240V / 1 phase / 50Hz 0.6 / 0.63 0.62 / 0.65 12.1 / 12.3 13.32 / 13.58 Rating conditions...
  • Page 82 Electrical characteristics Indoor model : AC425C Outdoor model : AER525SCE Indoor Unit Outdoor Unit Complete Unit Fan Motor Compressor Fan Motor Performance at 220-240V / 1 phase / 50Hz 220-240V / 1 phase / 50Hz 0.43 / 0.43 0.62 / 0.65 12.1 / 12.3 13.15 / 13.38 Rating conditions...
  • Page 83 Electrical characteristics Indoor model : AD425CW Outdoor model : AER525SCE Indoor Unit Outdoor Unit Complete Unit Fan Motor Compressor Fan Motor Performance at 220-240V / 1 phase / 50Hz 220-240V / 1 phase / 50Hz 0.83 / 0.89 0.62 / 0.65 12.1 / 12.3 13.55 / 13.84 Rating conditions...
  • Page 84 2. PROCESSES AND FUNCTIONS Room Temperature Control ................II - 2 Freeze Prevention ..................II - 3 Outdoor Fan Control ..................II - 3 – II-1 –...

  • Page 85: Room Temperature Control

    2-1 Room Temperature Control The unit adjusts the room temperature by turning the outdoor unit’s compressor ON and OFF. This process is controlled by the thermostat located in the remote control unit. The figures on this and the next page show how each part of the system performs when the room temperature changes and the thermostat activates the compressor to start up (thermo ON) or shut down (thermo OFF).

  • Page 86: Freeze Prevention

    2-2 Freeze Prevention Freeze prevention keeps the indoor heat exchange coil from freezing. Freezing reduces the efficiency of the unit, and frost buildup on the coil blocks the circulation of cool air from the indoor unit’s fan. FREEZE FREEZE PREVENTION PREVENTION MORE THAN 10 MINUTES 6 MINUTES...
  • Page 87 SPW-CR254EL8 type Tc(°C) When Tc reaches 60°C or more, the current fan speed is • increased by one step. • When Tc reaches 40°C or less, the current fan speed is decreased by one step. SPW-CR364EL8 type Tc(°C) • When Tc reaches 60°C or more, the current fan speed is increased by one step.
  • Page 88 SPW-CR484EL8 type Tc(°C) When Tc reaches 60°C or more, the current fan speed is • increased by one step. When Tc reaches 35°C or less, the current fan speed is • decreased by one step. Increases in fan speed are performed every minute after the fan speed changes. Decreases in fan speed are performed every five minutes after the fan speed changes.
  • Page 89 3. ELECTRICAL DATA Indoor Units (Electric Wiring Diagram, Schematic Diagram) ....III - 2 4-Way Air Discharge Semi-concealed Type ...........III - 2 Ceiling Mounted Type ................III - 6 Concealed Duct Type ................III - 10 Concealed Duct High Static Pressure Type ..........III - 12 Outdoor Units (Electric Wiring Diagram, Schematic Diagram) ....

  • Page 90: Electric Wiring Diagram

    AS425C, AS436C, AS448C • Electric Wiring Diagram IND Lamp Assy Switch Assy Connector 4P(WHT) 3P (WHT) 7P (WHT) 2P (RED) 2P (YEL) 3P (RED) 3P (GRN) Controller (CR-X363GS) 5P (WHT) 2P (WHT) 2P (WHT) 3P (BLU) 3P (RED) (WHT) 3P (WHT) 49FMI 1 2 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9...
  • Page 91 AS425C, AS436C, AS448C • Schematic Diagram CR-X363GS Controller 4P-1 4P-4 Coil 49FMI Room 4P-2 Symbols Description Symbols Description Indoor Fan Motor CR-X363GS Indoor Controller 49FMI Indoor Motor Thermal Protector Remote Control Switch Capacitor Terminal Plate Fuse Connector Drain Pump Terminal Dew Proof Heater Auto Louver Motor Power Transformer...
  • Page 92 AC425C, AC436C, AC448C • Electric Wiring Diagram GRN/YEL 49FI To Outdoor Unit Earth Power Supply Terminal Switch IND Lamp Assy Assy Terminal (Coil) (Room) Plate(4P) 1 2 3 4 5 6 7 8 9 GRN/YEL 2 3 4 5 6 7 8 9 49FMI W/LESS SW Assy...
  • Page 93 AC425C, AC436C, AC448C • Schematic Diagram F1(3, 15A) 4P-1 LESS 4P-4 Assy (Coil) (Room) DC12V 4P-2 Symbols Description Symbols Description Indoor Fan Motor Indicator Lamp Assy 49FMI Indoor Motor Thermal Protector Switch Assy Running Capacitor Terminal Plate Power Transformer Connector Auto Louver Motor Terminal Thermistor (Indoor Coil)
  • Page 94 AD425CW, AD436CW, AD448CW • Electric Wiring Diagram GRN/YEL 49FI To Outdoor Unit Earth Power Supply Terminal Terminal (Coil) (Coil) Plate(4P) 1 2 3 4 5 6 7 8 9 GRN/YEL 2 3 4 5 6 7 8 9 Remote Control Switch 49FMI 5P(WHT)
  • Page 95 AD425CW, AD436CW, AD448CW • Schematic Diagram CR-X363GS Controller 4P-1 49FMI 49FI 4P-4 49FMI (Coil) 4P-2 Symbols Description Symbols Description Indoor Fan Motor CR-X363GS Indoor Controller 49FI Indoor Motor Thermal Protector Remote Control Switch Running Capacitor Terminal Plate Fuse Connector Drain Pump Terminal Float Switch Power Transformer...
  • Page 96 3-2 Outdoor Units AER525SCE • Electric Wiring Diagram Terminal plate Connector 2P (WHT) 63PH Earth Terminal Earth Terminal 49FO W 854-2-5269-069-00-0 – III-8 –...
  • Page 97 3-2 Outdoor Units AER525SCE • Schematic Diagram 49FO 63PH Symbols Description Compressor motor Fan Motor 49FO Outdoor Fan Motor Thermal Protector Compressor Motor Magnetic Contactor 63PH High Pressure Switch Fan Speedcontrol Thermostat C1, 2 Capacitor Auxiliary Relay Connector Terminal Plate S 854-2-5269-069-00-0 –...
  • Page 98 AER525SC3E • Electric Wiring Diagram Relay Terminal plate Connector 2P (WHT) 63PH Earth Terminal Earth Terminal 49FO W 854-2-5269-070-00-0 – III-10 –...
  • Page 99 3-2 Outdoor Units AER525SC3E • Schematic Diagram 49FO 63PH Symbols Description Compressor motor Fan Motor 49FO Outdoor Fan Motor Thermal Protector Compressor Motor Magnetic Contactor Compressor Motor Overcurrent Relay Compressor Motor Thermal Protector Negative Phase Relay 63PH High Pressure Switch Fan Speedcontrol Thermostat Capacitor Auxiliary Relay...
  • Page 100 AER525SCL3E – III-12 –...
  • Page 101 AER525SCL3E • Schematic Diagram Terminal Plate (8P) CR-CR254GL8 F1 (3.15A) Controller 63PL Outdoor Coil C2 49FO MGSW 1 3 5 1 3 5 H M L 49FO 230V 51C, AC14V 63PH DC12V 63PH L3 L2 L2 L3 N N1 F2 (3.15A) S 854-2-5269-045-00-1 Symbols Description...
  • Page 102 AER536SC3E, AER548SC3E • Electric Wiring Diagram Relay Terminal plate Connector 2P (RED) 63PL Connector 2P (WHT) 63PH Earth Terminal Earth Terminal 49FO1 49FO2 W 854-2-5269-071-00-0 – III-14 –...
  • Page 103 AER536SC3E, AER548SC3E • Schematic Diagram 63PL 49FO1 49FO2 63PH S 854-2-5269-071-00-0 Symbols Description Compressor motor FM1, 2 Fan Motor 49FO1, 2 Outdoor Fan Motor Thermal Protector Compressor Motor Magnetic Contactor Compressor Motor Overcurrent Relay Negative Phase Relay 63PH High Pressure Switch 63PL Low Pressure Switch Fan Speed Control Thermostat...
  • Page 104 AER536SCL3E, AER548SCL3E – III-16 –...
  • Page 105 AER536SCL3E, AER548SCL3E • Schematic Diagram Terminal Plate (8P) CR-CR254GL8 F1 (3.15A) 63PL 63PL Controller 49FO Outdoor MGSW Coil C2 1 3 5 1 3 5 H M L H M L 49FO 230V 49FO AC14V 51C, DC12V 63PH 63PH L3 L2 L2 L3 N N1 F2 (3.15A) S 854-2-5269-046-00-1...
  • Page 106 4. SERVICE PROCEDURES Troubleshooting ..................... IV - 2 (1) Check before and after Troubleshooting ..........IV - 2 (2) Air conditioner does not operate ............IV - 3 (3) Outdoor unit does not run ..............IV - 7 IV - 9 (4) Indoor unit does not run .................

  • Page 107: Troubleshooting

    4-1 Troubleshooting (1) Check before and after troubleshooting Many problems may occur because of wiring or power supply problems, and so you should check these areas first. Problems here can cause incorrect results in some of the other tests, and so they should be remedied first. ⁄...
  • Page 108 Air conditioner does not operate ⁄ Circuit breaker trips (or fuse blows). (a) When the circuit breaker is set to ON, it is soon tripped. • There may be a ground fault. • Check the insulation resistance. If the resistance value is 1M Ω or less, the insulation is defective. (Example) Outdoor Indoor...
  • Page 109 4-2 Defective Sensor. ⁄ Indoor (heat exchanger) coil temp. Sensor is defective. (a) Open (=No continuity in sensor) Compressor and outdoor fan repeatedly go ON for 10 minutes and OFF for 6 minutes when sensor opens. (b) Short “Freeze Prevention” does not operate when dehumidified water is frozen on the indoor coil.
  • Page 110 C. Check “Operation selector” switch in the indoor unit. : In case of wireless remote control unit (GS type) • Has “Operation selector” IND. LAMP Ass’y or P.C.B. switch been set to ON Ass’y in the indoor unit position ? is defective.
  • Page 111 Check the auxiliary relay. (1Y or 2Y) • Check coil resistance of auxiliary relay. (1Y or 2Y) 0620_X_S Check the indoor fan motor thermal protector (49FMI) • Disconnect the socket from the 9P (WHT) connector. • Check the continuity between No. 8 and No.9 poles of the 9P socket.
  • Page 112 Outdoor unit does not run. Check the COOL/FAN selector switch in the remote control unit. • Is COOL/FAN selector switch Set to COOL. set to COOL ? Check the set temperature. Try to lower set temperature using temperature setting button “COOLER”. •...
  • Page 113 Check the compressor motor thermal protector (49C) • Check compressor motor Is temperature of compressor thermal protector. (49C) abnormally high ? Insufficient refrigerant gas. Charge refrigerant gas. Compressor is defective. • Check compressor motor magnetic contactor. (52C) (Only the outdoor fan does not run.) D.
  • Page 114 Indoor unit does not run. The indoor fan and louver motor do not run. P.C.B. Ass’y is defective. Some parts fail to operate. (1) The indoor fan does not run. Check fan casing Remove foreign for foreign matter matter or repair. Fan cannot on inside.
  • Page 115 Outdoor fan does not run. • Check fan casing Remove foreign for foreign matter matter or repair. Fan cannot on the inside. be rotated. • Check fan rotation. Rotate fan gently once or twice by hand. • Fan motor burnout Repair or replace.
  • Page 116 Poor cooling Check installation position Change installation of remote control unit. position of remote • Does cool air from air condi- control unit. tioner reach remote control unit directly ? Insulate wide tube and • Is wide tube between indoor unit then execute taping with and outdoor unit insulated ? narrow tube.
  • Page 117 (10) Excessive cooling. Set temperature to higher value using • Set temperature is too low. temperature setting button of remote control unit. • Is remote control unit installed Change installation where it can detect room position of remote temperature properly ? control unit.
  • Page 118 (11) PCB for LOW AMBIENT models S002 1 2 3 LED1 LED2 S001 D005 S002 (Capacity Code) 25 type 36 type 48 type Meaning of LED indication LED1 LED2 D005 Cause of trouble Light Light Normal state Light Light High pressure switch is activated, Light Flash Outdoor fan thermal protector activated,...
  • Page 119 4-2 Defective Sensor. ⁄ Indoor (heat exchanger) coil temp. Sensor is defective. (a) Open (=No continuity in sensor) Compressor and outdoor fan repeatedly go ON for 10 minutes and OFF for 6 minutes when sensor opens. (b) Short “Freeze Prevention” does not operate when dehumidified water is frozen on the indoor coil.
  • Page 120 4-4 Checking the Electrical Components Earthed wire Measuring the Insulation Clip Resistance • The electrical insulation is acceptable when the Probe resistance exceeds 1 MΩ. Insulation tester 0638_X_S ⁄ Power Supply Wires Clamp the earthed wire of the Power Supply wires Fig.
  • Page 121 Checking the Protective Devices • Disconnect the connector, consisting of P (plug) and S (socket) to check the protective device. • Then check the continuity of the plug’s (and/or socket’s) terminal as in Fig. 4-6 • Normality of the protective device can be judged by the following table. The Protective Device is proved normal if there is a continuity between terminals.
  • Page 122 Checking the Electrical Parts ⁄ Power transformer (TR1) ....Indoor unit *Measure the coil resistance. • Primary 220-240 V ; Measure the resistance between the two WHT lead wire terminals of the socket connected to the power transformer. • Secondary 10.6V ; Measure the resistance between the two BRN lead wires. Refer to “1–3–(A) Other component specifications”.
  • Page 123 fi Fuse on indoor P.C.B. Ass’y • Remove the P.C.B. Ass’y from the electrical component box. Then pull out the fuse from the P.C.B. Ass’y. (Fig. 4-8) Fuses Indoor P.C.B. Ass’y 0644_X_S Fig. 4-8 • The check for continuity of the fuse by using the multimeter. (Fig. 4-9) Having continuity is acceptable.

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