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TECHNICAL DATA

&
SERVICE MANUAL
Indoor Unit
Shows S-26PU1U6
Model No.
Outdoor Units
Type
Outdoor Units
U
Single
Indoor Units
Type
Indoor Units Type
U1
4-Way Cassette
K1
Wall Mounted
T1
Ceiling
F1
Low Silhouette Duct
85464849303001
26
36
U-26PE1U6
U-36PE1U6
U-26PS1U6
U-36PS1U6
26
36
S-26PU1U6
S-36PU1U6
S-26PK1U6
S-26PT1U6
S-36PT1U6
S-26PF1U6
S-36PF1U6
Outdoor Unit
Shows U-26PE1U6
42
U-42PE1U6
Cooling/Heating
U-42PS1U6
Cooling
42
S-42PU1U6
with Wired Remote Controller: CZ-RTC2
with Wireless Remote Controller: CZ-RWSK1U
S-42PT1U6
with Wired Remote Controller: CZ-RTC2
with Wired Remote Controller: CZ-RTC2
REFERENCE NO
Remarks
Remarks
.
SM830203-01

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Table of Contents

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   Summary of Contents for Panasonic Shows U-26PE1U6

  • Page 1: Technical Data

    TECHNICAL DATA & SERVICE MANUAL Indoor Unit Outdoor Unit Shows S-26PU1U6 Shows U-26PE1U6 Model No. Outdoor Units Type Outdoor Units Remarks U-26PE1U6 U-36PE1U6 U-42PE1U6 Cooling/Heating Single U-26PS1U6 U-36PS1U6 U-42PS1U6 Cooling Indoor Units Type Indoor Units Type Remarks S-26PU1U6 S-36PU1U6 S-42PU1U6...
  • Page 2: Special Precautions

    IMPORTANT! Please Read Before Starting This air conditioning system meets strict safety and oper- When Transporting ating standards. As the installer or service person, it is an Be careful when picking up and moving the indoor and important part of your job to install or service the system so outdoor units.
  • Page 3 • Do not touch the air inlet or the When Servicing CAUTION sharp aluminum fins of the • Turn the power OFF at the main power box (mains) outdoor unit. You may get injured. before opening the unit to check or repair electrical •...
  • Page 4: Precautions For Installation Using New Refrigerant

    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.
  • Page 5 3-2. Use R410A exclusive cylinder only. Configuration and characteristics of cylinders When charging with a refrigerant cylinder, use an Valve electronic scale for charging refrigerant. In this case, if the volume of refrigerant in the cylinder becomes less than 20% of the fully-charged amount, the composition of the refrigerant starts to change.
  • Page 6: Table Of Contents

    Contents Section 1: SPECIFICATIONS ..................... 1-1 1-1 Unit SpecifIcations ....................1-2 1-2 Major Component SpecifIcations ..............1-20 1-3 Other Component SpecifIcations ..............1-35 1-4 Dimensional Data....................1-38 1-5 Refrigerant Flow Diagram ................. 1-48 1-6 Operating Range ....................1-49 1-7 Capacity Correction Graph According to Temperature Condition ..... 1-50 1-8 Noise Criterion Curves ..................
  • Page 7 1. SPECIFICATIONS 1-1. Unit Specifications....................1-2 1-2. Major Component Specifications ................1-20 1-3. Other Component Specifications ................1-35 1-4. Dimensional Data ....................1-38 1-5. Refrigerant Flow Diagram ..................1-48 1-6. Operating Range ..................... 1-49 1-7. Capacity Correction Graph According to Temperature Condition ..... 1-50 1-8.
  • Page 8: Unit Specifications

    1. Specifications 1-1 Unit Specifications 4-Way Cassette Type MODEL No. S-26PU1U6 U-26PE1U6 230 - 208 V / 1 Phase / 60 Hz POWER SOURCE PERFORMANCE Cooling Heating Capacity * [minimum~muximum] BTU / h 24,800 [9,500~24,800] 29,800 [8,000~29,800] ˚ 7 Moisture removal (High) Pints / h Air circulation (H / M / L) 230 V 710 / 530 / 450...
  • Page 9 1. Specifications 1-1 Unit Specifications 4-Way Cassette Type MODEL No. S-36PU1U6 U-36PE1U6 230 - 208 V / 1 Phase / 60 Hz POWER SOURCE PERFORMANCE Cooling Heating Capacity * [minimum~muximum] BTU / h 32,600 [9,500~32,600] 37,600 [8,000~37,600] ˚ 7 Moisture removal (High) Pints / h 10.6 Air circulation (H / M / L) 230 V...
  • Page 10 1. Specifications 1-1 Unit Specifications 4-Way Cassette Type MODEL No. S-42PU1U6 U-42PE1U6 230 - 208 V / 1 Phase / 60 Hz POWER SOURCE PERFORMANCE Cooling Heating Capacity * [minimum~muximum] BTU / h 39,500 [9,500~39,500] 48,000 [8,000~48,000] ˚ 7 Moisture removal (High) Pints / h 12.6 Air circulation (H / M / L) 230 V...
  • Page 11 1. Specifications 1-1 Unit Specifications 4-Way Cassette Type MODEL No. S-26PU1U6 U-26PS1U6 230 - 208 V / 1 Phase / 60 Hz POWER SOURCE PERFORMANCE Cooling Capacity * [minimum~muximum] BTU / h 24,800 [9,500~24,800] (17˚F)** BTU / h Air circulation (H / M / L) 230 V 710 / 530 / 450 External Static Pressure in.
  • Page 12 1. Specifications 1-1 Unit Specifications 4-Way Cassette Type MODEL No. S-36PU1U6 U-36PS1U6 230 - 208 V / 1 Phase / 60 Hz POWER SOURCE PERFORMANCE Cooling Capacity * [minimum~muximum] BTU / h 32,600 [9,500~32,600] (17˚F)** BTU / h Air circulation (H / M / L) 230 V 1050 / 840 / 720 External Static Pressure in.
  • Page 13 1. Specifications 1-1 Unit Specifications 4-Way Cassette Type MODEL No. S-42PU1U6 U-42PS1U6 230 - 208 V / 1 Phase / 60 Hz POWER SOURCE PERFORMANCE Cooling Capacity * [minimum~muximum] BTU / h 39,500 [9,500~39,500] (17˚F)** BTU / h Air circulation (H / M / L) 230 V 1050 / 840 / 720 External Static Pressure in.
  • Page 14: Wall Mounted Type

    1. Specifications 1-1 Unit Specifications Wall Mounted Type MODEL No. S-26PK1U6 U-26PE1U6 230 - 208 V / 1 Phase / 60 Hz POWER SOURCE PERFORMANCE Cooling Heating Capacity * [minimum~muximum] BTU / h 25,200 [9,500~25,200] 29,200 [8,000~29,200] ˚ 7 Moisture removal (High) Pints / h Air circulation (H / M / L) 230 V 559 / 475 / 390...
  • Page 15 1. Specifications 1-1 Unit Specifications Wall Mounted Type MODEL No. S-26PK1U6 U-26PS1U6 230 - 208 V / 1 Phase / 60 Hz POWER SOURCE PERFORMANCE Cooling Capacity * [minimum~muximum] BTU / h 25,200 [9,500~25,200] (17˚F)** BTU / h Air circulation (H / M / L) 230 V 559 / 475 / 390 External Static Pressure in.
  • Page 16 1. Specifications 1-1 Unit Specifications Ceiling Type MODEL No. S-26PT1U6 U-26PE1U6 230 - 208 V / 1 Phase / 60 Hz POWER SOURCE PERFORMANCE Cooling Heating Capacity * [minimum~muximum] BTU / h 24,400 [9,500~24,400] 30,800 [8,000~30,800] ˚ 7 Moisture removal (High) Pints / h Air circulation (H / M / L) 230 V 550 / 490 / 460...
  • Page 17 1. Specifications 1-1 Unit Specifications Ceiling Type MODEL No. S-36PT1U6 U-36PE1U6 230 - 208 V / 1 Phase / 60 Hz POWER SOURCE PERFORMANCE Cooling Heating Capacity * [minimum~muximum] BTU / h 31,200 [9,500~31,200] 37,400 [8,000~37,400] ˚ 7 Moisture removal (High) Pints / h 10.0 Air circulation (H / M / L) 230 V...
  • Page 18 1. Specifications 1-1 Unit Specifications Ceiling Type MODEL No. S-42PT1U6 U-42PE1U6 230 - 208 V / 1 Phase / 60 Hz POWER SOURCE PERFORMANCE Cooling Heating Capacity * [minimum~muximum] BTU / h 39,000 [9,500~39,000] 44,500 [8,000~44,500] ˚ 7 Moisture removal (High) Pints / h 12.6 Air circulation (H / M / L) 230 V...
  • Page 19 1. Specifications 1-1 Unit Specifications Ceiling Type MODEL No. S-26PT1U6 U-26PS1U6 230 - 208 V / 1 Phase / 60 Hz POWER SOURCE PERFORMANCE Cooling Capacity * [minimum~muximum] BTU / h 24,400 [9,500~24,400] (17˚F)** BTU / h Air circulation (H / M / L) 230 V 550 / 490 / 460 External Static Pressure in.
  • Page 20 1. Specifications 1-1 Unit Specifications Ceiling Type MODEL No. S-36PT1U6 U-36PS1U6 230 - 208 V / 1 Phase / 60 Hz POWER SOURCE PERFORMANCE Cooling Capacity * [minimum~muximum] BTU / h 31,200 [9,500~31,200] (17˚F)** BTU / h Air circulation (H / M / L) 230 V 1100 / 930 / 750 External Static Pressure in.
  • Page 21 1. Specifications 1-1 Unit Specifications Ceiling Type MODEL No. S-42PT1U6 U-42PS1U6 230 - 208 V / 1 Phase / 60 Hz POWER SOURCE PERFORMANCE Cooling Capacity * [minimum~muximum] BTU / h 39,000 [9,500~39,000] (17˚F)** BTU / h Air circulation (H / M / L) 230 V 1130 / 950 / 775 External Static Pressure in.
  • Page 22 1. Specifications 1-1 Unit Specifications Low Silhouette Duct Type MODEL No. S-26PF1U6 U-26PE1U6 230 - 208 V / 1 Phase / 60 Hz POWER SOURCE PERFORMANCE Cooling Heating Capacity * [minimum~muximum] BTU / h 24,000 [9,500~24,000] 28,600 [8,000~28,600] ˚ 7 Moisture removal (High) Pints / h Air circulation (H / M / L) 230 V...
  • Page 23 1. Specifications 1-1 Unit Specifications Low Silhouette Duct Type MODEL No. S-36PF1U6 U-36PE1U6 230 - 208 V / 1 Phase / 60 Hz POWER SOURCE PERFORMANCE Cooling Heating Capacity * [minimum~muximum] BTU / h 31,200 [9,500~31,200] 36,200 [8,000~36,200] ˚ 7 Moisture removal (High) Pints / h 10.0...
  • Page 24 1. Specifications 1-1 Unit Specifications Low Silhouette Duct Type MODEL No. S-26PF1U6 U-26PS1U6 230 - 208 V / 1 Phase / 60 Hz POWER SOURCE PERFORMANCE Cooling Capacity * [minimum~muximum] BTU / h 24,000 [9,500~24,000] (17˚F)** BTU / h — Air circulation (H / M / L) 230 V 670 / 530 / 460 External Static Pressure...
  • Page 25 1. Specifications 1-1 Unit Specifications Low Silhouette Duct Type MODEL No. S-36PF1U6 U-36PS1U6 230 - 208 V / 1 Phase / 60 Hz POWER SOURCE PERFORMANCE Cooling Capacity * [minimum~muximum] BTU / h 31,200 [9,500~31,200] (17˚F)** BTU / h — Air circulation (H / M / L) 230 V 1060 / 920/ 750 External Static Pressure...
  • Page 26: Major Component Specifications

    1. Specifications 1-2 Major Component Specifications (A) Indoor Unit MODEL No. S-26PU1U6 Source 230 - 208 VAC / 1 phase / 60 Hz Remote controller (Supplied / Optional) Wired / Wireless (See Unit Specifications) Controller P. C. B Ass'y CR-26PU1U6-P Control circuit fuse 250 VAC, 5 A Fan (Number …...
  • Page 27 1. Specifications 1-2 Major Component Specifications (A) Indoor Unit MODEL No. S-36PU1U6 Source 230 - 208 VAC / 1 phase / 60 Hz Remote controller ( Supplied / Optional ) Wired / Wireless (See Unit Specifications) Controller P. C. B Ass'y CR-26PU1U6-P Control circuit fuse 250 VAC, 5 A...
  • Page 28 1. Specifications 1-2 Major Component Specifications (A) Indoor Unit MODEL No. S-42PU1U6 Source 230 - 208 VAC / 1 phase / 60 Hz Remote controller (Supplied / Optional) Wired / Wireless (See Unit Specifications) Controller P. C. B Ass'y CR-26PU1U6-P Control circuit fuse 250 VAC, 5 A Fan (Number …...
  • Page 29 1. Specifications 1-2 Major Component Specifications (A) Indoor Unit MODEL No. S-26PK1U6 Source 230 - 208 V / 1 phase / 60 Hz Remote controller ( Optional / Supplied ) Wired / Wireless (See Unit Specifications) Controller P. C. B Ass'y CB-KR254GXH56A Cross-flow Number ...
  • Page 30 1. Specifications 1-2 Major Component Specifications (A) Indoor Unit MODEL No. S-26PT1U6 Source 230 - 208 V / 1 phase / 60 Hz Remote controller ( Supplied / Optional ) Wired / Wireless (See Unit Specification) Controller P. C. B Ass'y CR - TH2672 Control circuit fuse 250 V, 5 A...
  • Page 31 1. Specifications 1-2 Major Component Specifications (A) Indoor Unit MODEL No. S-36PT1U6 Source 230 - 208 V / 1 phase / 60 Hz Remote controller ( Supplied / Optional ) Wired / Wireless (See Unit Specification) Controller P. C. B Ass'y CR - TH2672 Control circuit fuse 250 V, 5 A...
  • Page 32 1. Specifications 1-2 Major Component Specifications (A) Indoor Unit MODEL No. S-42PT1U6 Source 230 - 208 V / 1 phase / 60 Hz Remote controller ( Supplied / Optional ) Wired / Wireless (See Unit Specification) Controller P. C. B Ass'y CR - TH2672 Control circuit fuse 250 V, 5 A...
  • Page 33 1. Specifications 1-2 Major Component Specifications (A) Indoor Unit MODEL No. S-26PF1U6 Source 230 - 208 V / 1 phase / 60 Hz Remote controller ( Supplied / Optional ) Wired / Wireless (See Unit Specification) Controller P. C. B Ass'y CR - TH2672 Control circuit fuse 250 V, 5 A...
  • Page 34 1. Specifications 1-2 Major Component Specifications (A) Indoor Unit MODEL No. S-36PF1U6 Source 230 - 208 V / 1 phase / 60 Hz Remote controller ( Supplied / Optional ) Wired / Wireless (See Unit Specification) Controller P. C. B Ass'y CR - TH2672 Control circuit fuse 250 V, 5 A...
  • Page 35 1. Specifications 1-2 Major Component Specifications (B) Outdoor Unit U-26PE1U6 MODEL No. 208 - 230 V / 1 phase / 60 Hz Source CR-CH4872R (Microprocessor) Controller P.C.B. Ass'y 280 V, 25 A Control circuit fuse (on the P.C.B.“FIL-CH4872R”) Compressor Model..number C-7RVN153H0U 1,500 l i o...
  • Page 36 1. Specifications 1-2 Major Component Specifications (B) Outdoor Unit MODEL No. U-36PE1U6 208 - 230 V / 1 phase / 60 Hz Source CR-CH4872R (Microprocessor) Controller P.C.B. Ass'y 280 V, 25 A Control circuit fuse (on the P.C.B.“FIL-CH4872R”) Compressor Model..number C-7RVN153H0U 1,500 l i o...
  • Page 37 1. Specifications 1-2 Major Component Specifications (B) Outdoor Unit MODEL No. P-42PE1U6 208 - 230 V / 1 phase / 60 Hz Source CR-CH4872R (Microprocessor) Controller P.C.B. Ass'y 280 V, 25 A Control circuit fuse (on the P.C.B.“FIL-CH4872R”) Compressor Model..number C-9RVN273H0W 2,700 l i o...
  • Page 38 1. Specifications 1-2 Major Component Specifications (B) Outdoor Unit MODEL No. U-26PS1U6 208 - 230 V / 1 phase / 60 Hz Source CR-CH4872R (Microprocessor) Controller P.C.B. Ass'y 280 V, 25 A Control circuit fuse (on the P.C.B.“FIL-CH4872R”) Compressor Model..number C-7RVN153H0U 1,500 l i o...
  • Page 39 1. Specifications 1-2 Major Component Specifications (B) Outdoor Unit MODEL No. U-36PS1U6 208 - 230 V / 1 phase / 60 Hz Source CR-CH4872R (Microprocessor) Controller P.C.B. Ass'y 280 V, 25 A Control circuit fuse (on the P.C.B.“FIL-CH4872R”) Compressor Model..number C-7RVN153H0U 1,500 l i o...
  • Page 40 1. Specifications 1-2 Major Component Specifications (B) Outdoor Unit MODEL No. U-42PS1U6 208 - 230 V / 1 phase / 60 Hz Source CR-CH4872R (Microprocessor) Controller P.C.B. Ass'y 280 V, 25 A Control circuit fuse (on the P.C.B.“FIL-CH4872R”) Compressor Model..number C-9RVN273H0W 2,700 l i o...
  • Page 41: Other Component Specifications

    1. Specifications 1-3 Other Component Specifications Outdoor Unit U-26PE1U6, U-26PS1U6 Thermistor (Coil sensor) : TH2 to 5 14 °F : 23.7 50 °F : 9.7 Coil resistance kΩ 23 °F : 18.8 68 °F : 6.5 32 °F : 15.0 86 °F : 4.4 41 °F : 12.1 104 °F : 3.1...
  • Page 42 1. Specifications 1-3 Other Component Specifications Outdoor Unit U-36PE1U6, U-36PS1U6 Thermistor (Coil sensor) : TH2 to 5 14 °F : 23.7 50 °F : 9.7 Coil resistance kΩ 23 °F : 18.8 68 °F : 6.5 32 °F : 15.0 86 °F : 4.4 41 °F : 12.1 104 °F : 3.1...
  • Page 43 1. Specifications 1-3 Other Component Specifications Outdoor Unit U-42PE1U6, U-42PS1U6 Thermistor (Coil sensor) : TH2 to 5 14 °F : 23.7 50 °F : 9.7 Coil resistance kΩ 23 °F : 18.8 68 °F : 6.5 32 °F : 15.0 86 °F : 4.4 41 °F : 12.1 104 °F : 3.1...
  • Page 44: Dimensional Data

    1. Specifications 1-4 Dimensional data Indoor unit : 4-Way Cassette Type 26 Type 10-9/32 8-11/16 4-7/8 Min. 2-15/32 Min. 19/32 4-7/8 2-5/16 6-3/16 7-5/32 12-1/8 1-3/16 33-27/32 32-9/32 (Ceiling opening) 4-7/8 29-13/16 (Suspention bolt pitch) 19-11/16 1-7/8 4-7/8 8-11/16 2-3/8 Dimension : inch Air intake grille Air outlet...
  • Page 45 1. Specifications 1-4 Dimensional data Indoor unit : 4-Way Cassette Type 36, 42Type 11-15/32 4-7/8 9-19/32 Min. 2-15/32 Min. 19/32 2-5/16 6-3/16 7-5/32 4-7/8 32-9/32 (Ceiling opening) 33-27/32 13-5/16 1-3/16 4-7/8 29-13/16 (Suspention bolt pitch) 19-11/16 1-7/8 4-7/8 9-19/32 2-3/8 Dimension : inch Air intake grille Air outlet...
  • Page 46 1. Specifications 1-4 Dimensional data Indoor unit : Wall Mounted Type Drain and wiring port (3-5/32) Refrigerant liquid line (3/8") Flare connection Refrigerant gas line (5/8") Flare connection Drain hose OD 45/64 Dimension : inch 1-40...
  • Page 47 1. Specifications 1-4 Dimensional data Indoor unit : Ceiling Type 26 Type 6-3/32 3-15/16 12-7/32 11-1/32 3-3/8 5-3/4 5-9/16 11-1/32 4-9/16 3-9/32 Holes in the rear side (View from front) Hole for wall-through piping (View from front) 5-3/16 2-25/32 48-7/16 (Suspension bolt hole pitch) 1-3/8 50-13/32 26-3/8...
  • Page 48 1. Specifications 1-4 Dimensional data Indoor unit : Ceiling Type 36, 42 Type 6-3/32 7-31/32 12-7/32 11-1/32 3-3/8 5-3/4 5-9/16 11-1/32 4-3/4 3-5/32 Holes in the rear side (View from front) Hole for wall-through piping (View from front) 5-3/16 2-25/32 59-1/4 (Suspension bolt hole pitch) 1-3/8 61-7/32...
  • Page 49 1. Specifications 1-4 Dimensional data Indoor unit : Low Silhouette Duct Type 26 Type 7-15/32 31/32 6-5/16 1-3/16 2-3/4 13/32 31/32 24-13/16 3-11/32 4-17/32 10-1/4 15/16 (Air outlet duct flange) 22-27/32 31/32 (Suspension bolt pitch) Dimension : inch Refrigerant liquid line (3/8") Flare connection Refrigerant gas line (5/8") Flare connection Upper drain port (O.D.
  • Page 50 1. Specifications 1-4 Dimensional data Indoor unit : Low Silhouette Duct Type 36 Type 7-15/32 6-5/16 31/32 1-3/16 2-3/4 13/32 24-13/16 31/32 3-11/32 4-17/32 10-1/4 15/16 (Air outlet duct flange) 22-27/32 31/32 Dimension : inch (Suspension bolt pitch) Refrigerant liquid line (3/8") Flare connection Refrigerant gas line (5/8") Flare connection Upper drain port (O.D.
  • Page 51 1. Specifications 1-4 Dimensional data Indoor unit : Low Silhouette Duct Type Flange for the air intake duct (Field supply) : For Concealed Duct Type Thickness more than T1/16 inch 8-9/32 31/32 12-1/32 31/32 10-1/4 (O.D.) 29/32 13/32 5/16 1-25/32 7-7/8 1-25/32 2118_U_I...
  • Page 52 1. Specifications 1-4 Dimensional Data (B) Outdoor Unit: U-26PE1U6, U-26PS1U6 U-36PE1U6, U-36PS1U6 1-46...
  • Page 53 1. Specifications 1-4 Dimensional Data (B) Outdoor Unit: U-42PE1U6, U-42PS1U6 1-47...
  • Page 54: Refrigerant Flow Diagram

    1. Specifications Refrigerant Flow Diagram Outdoor Unit : U-26PE1U6, U-26PS1U6 Indoor Unit : 26, 30, 36 Types U-36PE1U6, U-36PS1U6 1-48...
  • Page 55: Operating Range

    1. Specifications 1-5 Refrigerant Flow Diagram Outdoor Unit: U-42PE1U6, U-42PS1U6 Indoor Unit: 42 Type 1-6 Operating Range Temperature Indoor Air Intake Outdoor Air Intake 90 °F DB / 77 °F WB 115 °F DB Maximum Cooling 64 °F DB / 57 °F WB 14 °F DB Minimum 86 °F DB...
  • Page 56: Capacity Correction Graph According To Temperature Condition

    1. Specifications 1-7 Capacity Correction Graph According to Temperature Condition U-26PE1U6, U-26PS1U6 U-36PE1U6, U-36PS1U6 U-42PE1U6, U-42PS1U6 1-50...
  • Page 57: Noise Criterion Curves

    1. Specifications 1-8 Noise Criterion Curves 4-Way Cassette Type MODEL : S-26PU1U6 SOUND LEVEL : HIGH 38 dB(A), NC 31 31 dB(A), NC 23 CONDITION : Center, Under the unit 4.9 ft. SOURCE : 208 - 230 V, 1 Phase, 60 Hz NC-50 NC-40 NC-30...
  • Page 58 1. Specifications 1-8 Noise Criterion Curves Wall Mounted Type S-26PK1U6 CONDITION : Distance 3.3 ft., Under the unit 3.3 ft. SOURCE : 208 - 230 V, 1 Phase, 60 Hz 1-52...
  • Page 59 1. Specifications 1-8 Noise Criterion Curves Ceiling Type MODEL : S-26PT1U6 MODEL : S-36PT1U6 SOUND LEVEL : HIGH 40 dB(A), NC 34 SOUND LEVEL : HIGH 46 dB(A), NC 39 36 dB(A), NC 26 37 dB(A), NC 31 CONDITION : Distance 3.3 ft., Under the unit 3.3 ft. CONDITION : Distance 3.3 ft., Under the unit 3.3 ft.
  • Page 60 1. Specifications 1-8 Noise Criterion Curves Low Silhouette Duct Type MODEL : S-36PF1U6 MODEL : S-26PF1U6 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 4.9 ft.
  • Page 61 1. Specifications 1-8 Noise Criterion Curves Outdoor Units U-26PE1U6, U-26PS1U6 U-36PE1U6, U-36PS1U6 U-42PE1U6, U-42PS1U6 REMARKS: 1. Value obtained in the actual place where the unit is installed may be slightly higher than the values shown in this graph because of the conditions of operation, the structure of the building, the background noise and other factors.
  • Page 62: Increasing The Fan Speed

    1. Specifications 1-9 Increasing the Fan Speed Electrical component box If external static pressure is too great (due to long extension Jumper cable of ducts, for example), the air flow volume may drop too low Jumper cable motor at each air outlet. This problem may be solved by increasing the fan speed using the following procedure: Fan motor socket (1) Remove 4 screws on the electrical component box and...
  • Page 63: Air Throw Distance Chart

    1. Specifications 1-10 Air throw distance chart 4-Way Cassette Type Model: 26 Type HORIZONTAL DISTANCE (ft.) AXIS AIR VELOCITY 2111_X_I Model: 36, 42 Type HORIZONTAL DISTANCE (ft.) AXIS AIR VELOCITY 2112_X_I : LOUVER ANGLE 20˚ in Cooling mode : LOUVER ANGLE 60˚ in Heating mode Condition Fan Speed : Hi Room air temp.
  • Page 64 1. Specifications 1-10 Air throw distance chart Wall Mounted Type Horizontal distance (ft.) Model: 26 Type COOLING - - - - - HEATING FAN SPEED HIGH HIGH ROOM AIR TEMP. 80°F 70°F FLAP ANGLE 0°, 22.5°, 45° 45°, 67.5° 1-58...
  • Page 65 1. Specifications 1-10 Air throw distance chart Ceiling Type Model: 26 Type HORIZONTAL DISTANCE (ft.) AXIS AIR VELOCITY 2115_T_I Model: 36 Type HORIZONTAL DISTANCE (ft.) AXIS AIR VELOCITY 2116_T_I Model: 42 Type HORIZONTAL DISTANCE (ft.) AXIS AIR VELOCITY COOLING HEATING FAN SPEED HIGH HIGH...
  • Page 66: Electrical Wiring

    1. Specifications 1-11. ELECTRICAL WIRING General Precautions on Wiring Before wiring, confirm the rated voltage of the unit Regulations on wire diameters differ from locality to as shown on its nameplate, then carry out the wiring locality. For field wiring rules, must follow your LOCAL closely following the wiring diagram.
  • Page 67 1. Specifications Wiring System Diagrams Basic wiring diagram for standard control Outdoor unit INV unit Power supply Inter-unit power line 208 / 230 V, 60Hz, 1-PH Indoor 208 / 230 V, 60 Hz, 1-PH unit Grounding line Wire joint Grounding line connection * Disconnect switch Remote...
  • Page 68 1. Specifications Stranded wire Loose wiring may cause the WARNING terminal to overheat or result in unit malfunction. A fire Ring hazard may also exist. pressure Therefore, ensure that all terminal wiring is tightly connected. When connecting each power wire to the corresponding terminal, follow the instructions on “How to connect wiring Fig.
  • Page 69: Installation Instructions

    1. Specifications 1-12. Installation Instructions Outdoor Unit 1. Tubing Size Single Single type Refrigerant tubing between the indoor and outdoor units should be kept as short as possible. The length of the refrigerant tubes between the indoor and outdoor units are limited by the elevation difference between the 2 units.
  • Page 70: Check Of Density Limit

    1. Specifications 1. This unit requires no additional refrigerant charge up to 100 ft. tubing length. In case of more than 100 ft., additional refrigerant charge is required. Refer to Table CAUTION 1-3. 2. In case of multi type installation, indoor units should be installed within the same room.
  • Page 71: Selecting The Installation Site

    1. Specifications 3. SELECTING THE INSTALLATION SITE 3-1. Outdoor Unit Exhaust fan AVOID: heat sources, exhaust fans, etc. (Fig. 1-3) Hot air damp, humid or uneven locations Heat source Out- door choose a place as cool as possible. unit choose a place that is well ventilated and outside air temperature does not exceed maximum 115°F constantly.
  • Page 72 1. Specifications 3-2. Air-Discharge Chamber for Top Discharge Be sure to install an air discharge chamber in the Air discharge field when: it is difficult to keep a space of min. 20" between the air discharge outlet and an obstacle. Air discharge the air discharge outlet is facing a sidewalk and discharged hot air may bother passers-by.
  • Page 73 1. Specifications 3-5. Dimensions of Wind Ducting Reference diagram for air-discharge chamber (fi eld supply) For U-26PE(S)1U6 / U-36PE(S)1U6 unit ① Air discharge chamber ② Air discharge chamber (base) 21-13/16 (25/32) (25/32) Rectangular hole (both sides) 5-5/32 9-27/32 9-27/32 1-1/16 21-13/16 15/16 17/32 Unit: inch...
  • Page 74 1. Specifications Dimensions of Outdoor Unit with air-discharge chamber (fi eld supply) U-26PE(S)1U6 / U-36PE(S)1U6 unit 4-5/16 6-11/16 25-31/32 Wind direction 2-17/32 21-13/16 9-7/8 Wind direction Wind direction Unit: inch U-42PE(S)1U6 unit 4-5/16 6-11/16 25-31/32 Wind direction 2-11/36 21-13/32 11-13/16 Wind direction Wind Wind...
  • Page 75 1. Specifications Reference diagram for air-discharge chamber (fi eld supply) U-26PE(S)1U6 / U-36PE(S)1U6 / U-42PE(S)1U6 Required space around outdoor unit If the 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 Unit: inch The top and both sides must remain open.
  • Page 76 1. Specifications 3-6. Dimensions of Snow Ducting Reference diagram for snow-proof vents (fi eld supply) For U-26PE(S)1U6 / U-36PE(S)1U6 unit 30-3/32 ① Unit top, snow-proof vent ② Unit left side ③ Unit right side ④ Unit reverse side ⑤ Unit reverse side ⑥...
  • Page 77 1. Specifications Dimensions of outdoor unit with snow-proof vents (fi eld supply) U-26PE(S)1U6 / U-36PE(S)1U6 unit 30-5/64 7-3/64 Wind direction Wind direction Wind direction Wind direction 11-57/64 37-1/64 Wind direction Wind direction Unit: inch U-42PE(S)1U6 unit 30-5/64 7-3/64 Wind direction Wind direction Wind direction Wind direction...
  • Page 78 1. Specifications Reference diagram for snow-proof vents – 1 Space requirements for setting – (1) U-26PE(S)1U6 / U-36PE(S)1U6 / U-42PE(S)1U6 ] t i ] t i (1) Single-unit installation (2) Obstacles on both sides (1) Single-unit installation Min. B (2) Multiple-unit installation (2 or more units) Min.
  • Page 79 1. Specifications Reference diagram for snow-proof vents – 2 Space requirements for setting – (2) U-26PE(S)1U6 / U-36PE(S)1U6 / U-42PE(S)1U6 [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.
  • Page 80: How To Install The Outdoor Unit

    1. Specifications 4. HOW TO INSTALL THE OUTDOOR UNIT 4-1. Installing the Outdoor Unit Drain port (2 locations) Use concrete or a similar material to create the base, and ensure good drainage. 6-11/16 4-21/64 25-63/64 Ordinarily, ensure a base height of 2". or more. If a 8-5/8 5-29/32 drain pipe is used, or for use in cold-weather regions,...
  • Page 81: Indoor Unit

    1. Specifications Indoor Unit Ceiling Type 5. SELECTING THE INSTALLATION SITE Ceiling 5-1. Indoor Unit AVOID: Wall areas where leakage of flammable gas may be expected. Min. 10 inch Min. 10 inch Front view places where large amounts of oil mist exist. direct sunlight.
  • Page 82: How To Install The Indoor Unit

    1. Specifications 6. HOW TO INSTALL THE INDOOR UNIT 4-Way Cassette Type (U1 Type) 6-1. Suspending the Indoor Unit Hole-in-anchor This unit uses a drain pump. Use a level gauge to Hole-in-plug Concrete Insert check that the unit is level. 6-2.
  • Page 83 1. Specifications 6-3. Placing the Unit Inside the Ceiling Full-scale installation diagram (printed on a cardboard packing) (1) When placing the unit inside the ceiling, determine the pitch of the suspension bolts using the supplied full-scale installation diagram. (Fig. 1-15) The size of the opening for the indoor unit can be confirmed by attaching the full-scale installation diagram beneath the unit.
  • Page 84 1. Specifications 6-4. Installing the Drain Piping Transparent part for Hose band Adhere with (1) Prepare standard hard PVC pipe for the drain and checking drainage (supplied) PVC adhesive. use the supplied drain hose and hose band to pre- vent water leaks. The PVC pipe must be purchased separately.
  • Page 85 1. Specifications 6-5. Checking the Drainage After wiring and piping are completed, use the follow- ing procedure to check that the water will drain smooth- ly. For this, prepare a bucket and wiping cloth to catch and wipe up spilled water. Do not supply power to the WARNING unit until the tubing and wir-...
  • Page 86 1. Specifications Screw Ceiling Panel Latch Never touch or attempt to CAUTION move the air direction louver by hand or you may dam- age the unit. Instead, use the remote controller if you want Air-intake grille to change the direction or air flow.
  • Page 87 1. Specifications 6-7. Installing the Ceiling Panel (1) Lift the ceiling panel and position it to align the panel hook with the panel catch of the indoor unit. NOTE The ceiling panel must be mounted in the correct direction. Note that the 2 catches of the panel differ in size.
  • Page 88 1. Specifications 6-9. Duct for Fresh Air For fresh air intake There is a duct connection part on side of the indoor unit. (Fig. 1-27) Air-intake plenum (including Duct connection box and flange) are attached to the indoor unit when used to take fresh outdoor air.
  • Page 89 1. Specifications (d) Installing the ceiling panel Duct connection flange Attach the ceiling panel to the air-intake plenum. Duct connection box Drawing the panel downwards sets the panel in position temporarily with the panel catch (at 2 locations). Installation screws (M4xL1/2”, 4pcs.) Remove the socket cover of the air-intake plenum and pass the 8P sockets through it.
  • Page 90 1. Specifications Wall Mounted Type (K1 Type) 6-10. Removing the Wall Fixture from the Unit Remove the set screws and take off the rear panel. (Fig. 1-30) NOTE Set screws for transportation only Tubing can be extended in 3 directions as shown in Fig.
  • Page 91 1. Specifications 6-12. Installing the Rear Panel on the Wall Be sure to confirm that the wall is strong enough to suspend the unit. See either Item a) or b) below depending on the wall type. a) If Wooden Wall (1) Attach the rear panel to the wall with the 10 screws pro- Fig.
  • Page 92 1. Specifications 6-13. Removing the Grille to Install the Indoor Unit Grille Air-intake grille Basically, these models can be installed and wired without removing the grille. If access to any internal part is needed, follow the steps given below: How to remove the grille (1) Set the 2 flaps in the horizontal position.
  • Page 93 1. Specifications 6-15. Wiring Instructions General Precautions on Wiring (1) Before wiring, confirm the rated voltage of the unit as shown on its nameplate, then carry out the wiring closely following the wiring diagram. (2) Provide a power outlet to be used exclusively for each unit. A power supply disconnect and circuit breaker for overcurrent protection should be provided in the exclusive line.
  • Page 94 1. Specifications Cover 6-17. Shaping the Tubing Refrigerant (1) Shape the refrigerant tubing so that it can easily go tubing into the hole. (Fig. 1-45) (2) Push the wiring, refrigerant tubing and drain hose Inter-unit through the hole in the wall. Adjust the indoor unit wiring so it is securely seated on the wall fixture.
  • Page 95 1. Specifications Front face Ceiling Type (T1 Type) 6-19. Suspending the Indoor Unit (1) Place the full-scale diagram (supplied) on the Rear ceiling at the spot where you want to install the indoor unit. Use a pencil to mark the drill holes. Full-scale diagram (Fig.
  • Page 96 1. Specifications (5) Before suspending the indoor unit, remove the 2 Pull out the screws on the latch of the air-intake grilles, open air-Intake grille pushing claws the grilles, and remove them by pushing the claws Hinge of the hinges of the hinges as shown in Fig.
  • Page 97 1. Specifications (7) Suspend the indoor unit as follows. (a) Mount a washer and two hexagonal nuts on each suspension bolt as shown in Fig. 1-58. Ceiling (b) Lift the indoor unit with a lifting machine to the surface Washer ceiling surface, and place it on the washers (supplied) (field supply)
  • Page 98 1. Specifications 6-20. Duct for Fresh Air Duct connection port (Knock-out hole) There is a duct connection port (knock-out hole) at the right-rear on the panel top of the indoor unit for drawing in fresh air. If it is necessary to draw in fresh air, remove the cover by knocking it out and connect the duct to the Panel Top indoor unit through the connection port.
  • Page 99 1. Specifications Low Silhouette Ducted Type (F1 Type) 6-22. Required Minimum Space for Installation and Service Electrical A (Suspension bolt pitch) component box This air conditioner is usually installed above the ceiling so that the indoor unit and ducts are not Inspection access visible.
  • Page 100 1. Specifications 6-23. Suspending the Indoor Unit Hole-in-anchor Hole-in-plug Concrete Insert Depending on the ceiling type: • Insert suspension bolts as shown in Fig. 1-69 • Use existing ceiling supports or construct a suitable support as shown in Fig. 1-70. Suspension bolt (M10 or 3/8") (field supply) It is important that you use...
  • Page 101 1. Specifications Fig. 1-73 shows an example of installation. Bolt anchor Air outlet duct Suspension bolt Air-intake duct Air-outlet grille Ceiling material Indoor unit Air-intake grille Fig. 1-73 6-24. Installing the Drain Piping (1) Prepare standard hard PVC pipe for the drain and Transparent part for Hose band Adhere with...
  • Page 102 1. Specifications Air bleeder CAUTION Do not install an air bleeder tube as this may cause Not good water to spray from the drain pipe outlet. (Fig. 1-76) If it is necessary to increase the height of the drain Fig. 1-76 pipe, the section directly after the connection port can be raised a maximum of 19-11/16".
  • Page 103 1. Specifications 6-26. Increasing the Fan Speed Electrical component box If external static pressure is too great (due to long Booster cable extension of ducts, for example), the air flow volume Booster cable motor may drop too low at each air outlet. This problem may be solved by increasing the fan speed using the Fan motor socket (At shipment)
  • Page 104 1. Specifications 6-27. When Installing the Indoor Unit Confirm that the indoor unit should be installed in a horizontal position. Use the level gauge or vinyl tube and check every four corner of the unit is in horizontal. If the air outlet duct flange is positioned with downward gradient, there is in danger of water splash or drainage.
  • Page 105 1. Specifications SUPPLEMENT ON DRAIN PIPING Checkpoint after installation After installation of indoor and outdoor units, panels and electrical wiring, check the following items. Make sure whether indoor and outdoor units are Fall, vibration, noise correctly installed. 2 Make sure whether gas leakage is tested. No cooling, no heating Make sure whether insulation is completed.
  • Page 106: How To Install The Wireless Remote Controller

    1. Specifications 7. HOW TO INSTALL THE WIRELESS REMOTE CONTROLLER IMPORTANT When using this air conditioner with the wireless remote controller it may sometimes be impossible to change the operation modes while other indoor unit is running. When this happens, a double beep tone sounds, the (operation lamp) lights up, and the (Timer lamp) and (Standby lamp) blink alternately.
  • Page 107 1. Specifications 7-2. Room Temperature Sensor Setting The room temperature sensors are built into the indoor unit and the wireless remote controller. Either of these room temperature sensors can operate. The system is shipped from the factory set to the indoor unit sensor. To switch to the remote control sensor, press the sensor switching button located inside the remote control cover and check that A/C SENSOR on the LCD display panel goes out.
  • Page 108 1. Specifications <CZ-RWSU1U> 4-Way Cassette Type (U1 Type) Air intake grille 7-5. Indicator Section Installation Mark section Remove the ceiling panel and indicator cover and (indicator section) install the indicator section. (1) Remove the ceiling panel. (2) Remove the corner cover behind the mark section. (3 screws) Ceiling panel (3) Remove the mark section inside the ceiling panel.
  • Page 109 1. Specifications Ceiling Type (T1 Type) 7-7. Indicator Section Installation Remove the side panel to install the indicator section. (Fig. 1-91) Indicator section Panel Side panel Indicator section Cover B (1) Remove the side panel. (Not used when Open the air intake grille, remove the screw at the indicator section is installed.) one place and then remove the side panel by...
  • Page 110 1. Specifications 7-9. Electrical Wiring Signal receiving unit Indoor PCB Operating controller Indicator section (0.7 ft.) (4.3 ft.) W1 (4.3 ft.) Relay connector Fig. 1-93 Connection method (1) Connect W1 to the indoor PCB WL connector. (2) Connect W3 from the indicator section with W2 from the operating controller using the relay connector. 7-10.
  • Page 111 1. Specifications 7-11. Misoperation Alarm Indicators Alarm indicator lamps on the indoor unit indicate the error cause if the air conditioner fails to operate upon being switched on. The possible alarm indications are given in Table 1-9. Fig. 1-95 shows the location of the alarm lamps on the indoor unit.
  • Page 112 1. Specifications <CZ-RWSC1U> If the signal receiving unit is installed near a rapid-start or inverter type fluorescent CAUTION lamp (neither one uses glow lamps), it may be impossible to receive signals from the wireless remote controller. To avoid signal interference from fluorescent lamps, install the receiving unit at least 6.6 ft.
  • Page 113 1. Specifications When using the signal receiving unit on a wall with the front exposed, choose a wall surface that the Run the remote con Clamp (Supplied) signal receiving unit can be mounted on. cable through a notch About 3/32"-1/8" in the upper case.
  • Page 114 1. Specifications 7-13. Electrical Wiring Be sure to do the wiring CAUTION correctly (incorrect wiring will damage the equipment). Recommended wire diameter and allowable length for signal receiving unit wiring and its branch wiring: AWG #18, MAX 1,300 ft. Terminal board for indoor unit Signal receiving unit...
  • Page 115 1. Specifications 7-15. Misoperation Alarm Indicators A blinking lamp for other than the signal receiving unit Service connector fi lter shows that a problem has occurred in the unit, so make an inspection. (Refer to servicing information in the service manual, etc.) Also, if wired remote controller and dedicated service check lines (CV6380230938: service use) are available, then detailed error information can be obtained by connecting to the...
  • Page 116 1. Specifications 7-16. Basic Wiring Diagram In case of using shielded wires for inter-unit control Be sure to do the wiring CAUTION wiring, ground the shield on one side. (Fig. 1-109) correctly (incorrect wiring Otherwise misoperation because of electrical noise will damage the equipment).
  • Page 117 1. Specifications 7-17. Wiring System Diagram for Group Control This diagram shows when several units (maximum of 8) are controlled by a signal receiving unit (main unit). In this case, a signal receiving unit can be connected at any indoor unit. Wiring procedure Wire according to the diagram at left: Address setting is executed automatically when the...
  • Page 118 1. Specifications 7-18. Wiring System Diagram for Multiple Remote Controllers When installing multiple remote controllers This multiple system is used for operating the unit(s) at different positions. (A maximum of 2 signal receiving units can be installed.) Setting method To execute this control, make the setting according to the following procedure.
  • Page 119 1. Specifications <CZ-RWSK1U> 7-19. Test Run Procedure Wall mounted Type (K1 Type) Check the “Check Items Before the Test Run.” (Item 7-20) Verify the combination (wiring) of indoor and outdoor units. Set the indoor unit controller to “TEST.” (Item 7-21-3) Check using the Diagnosis Is operation function table.
  • Page 120 1. Specifications 7-21. Preparing for the Test Run 7-21-1. Changing the room temperature sensor Room temperature sensors are installed inside the indoor unit and the wireless remote controller. Either room temperature sensor can be used. When “Unit Sensor” is indicated on the wireless remote controller’s LCD, the indoor unit sensor is operating as the room temperature sensor.
  • Page 121 1. Specifications 7-22. Precautions Request that the customer be present at the time the test run is performed. Explain the Operating Instructions to the customer, and then have the customer actually operate the system. Be sure to pass the manual and warranty certifi cate to the customer. Verify that the AC 208 / 230 V wiring is not connected to the terminal plate which is used to connect the inter-unit control wiring.
  • Page 122 1. Specifications 7-23. When Setting Indoor Unit Control PCB Switch for Wall Mounted Indoor Unit When using both the wired and wireless remote controller, refer to the procedure below. If this setting is not made correctly an alarm will occur. (The operation lamp on the display blinks.) This setting is not necessary for the case of using wireless remote controller only.
  • Page 123 1. Specifications 1-117...
  • Page 124: How To Process Tubing

    1. Specifications 8. HOW TO INSTALL THE TIMER WIRED REMOTE CONTROLLER NOTE Refer to the Instraction Manual attaehed to the Timer Remote Controller. 1-13. HOW TO PROCESS TUBING Deburring The liquid tubing side is connected by a flare nut, and the gas tubing side is connected by brazing.
  • Page 125 1. Specifications Caution Before Connecting Tubes Tightly (1) Apply a sealing cap or water-proof tape to prevent dust or water from entering the tubes before they are used. Apply refrigerant (2) Be sure to apply refrigerant lubricant to the matching surfaces of the lubricant fl...
  • Page 126 1. Specifications Do not use a spanner to tighten the valve stem caps. Packed valve Doing so may damage the valves. Charging port Depending on the installation conditions, applying excessive torque may cause the nuts to crack. Valve stem Precautions for Packed Valve Operation If the packed valve is left for a long time with the valve stem cap removed, refrigerant will leak from the valve.
  • Page 127 1. Specifications 4. Taping the Tubes (1) At this time, the refrigerant tubes (and electrical wiring if local codes permit) should be taped together with armoring tape in 1 bundle. To Inter-unit Gas tube prevent condensation from overfl owing the drain control wiring Liquid tube pan, keep the drain hose separate from the...
  • Page 128: Leak Test, Evacuation And Additional Refrigerant Charge

    1. Specifications 1-14. LEAK TEST, EVACUATION AND Manifold gauge ADDITIONAL REFRIGERANT CHARGE Perform an air-tightness test for this package A/C. Check that there is no leakage from any of the connections. Air and moisture in the refrigerant system may have undesirable effects as indicated below. pressure in the system rises operating current rises cooling (or heating) effi...
  • Page 129 1. Specifications (3) Pressurize the system up to 4.15 MPa Manifold valve (42 kgf/cm G) with dry nitrogen gas and close the cylinder valve when the gauge reading reaches 4.15 MPa (42 kgf/cm G). Then, test for leaks with Pressure liquid soap.
  • Page 130 1. Specifications Manifold valve 3. Charging Additional Refrigerant Charging additional refrigerant (calculated from the liquid tube length as shown in Section "1-12. Installation Pressure Instructions, 1. Tubing Size, Table 1-2 Tubing Data for gauge Models", Amount of additional refrigerant charge) using the liquid tube service valve.
  • Page 131: Section 2: Processes And Functions

    2. PROCESSES AND FUNCTIONS 2-1 Room Temperature Control ..................2-2 2-2 Cold Draft Prevention (Heating Cycle) ................ 2-4 2-3 Automatic Fan Speed (Indoor Unit) ................2-5 2-4 Control Functions ......................2-6 2-5 Outdoor Unit Control PCB ................... 2-9 2-6 Outdoor Unit Control PCB (CR-CH4272R) ..............2-10...
  • Page 132: Room Temperature Control

    2. Processes and functions 2-1 Room Temperature Control The unit adjusts 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 pages show how each part of the system performs when the room temperature changes and the thermostat activates the compressor to start (thermo ON) or stop (thermo OFF).
  • Page 133 2. Processes and functions (B) Heating THERMO. ON THERMO. ON REMOTE CONTROL THERMO. OFF THERMO. OFF SENSOR (Only for wireless THERMO. ON remote controller) SET. +2 °F SETTING TEMP. SET. –2 °F THERMO. OFF THERMO. OFF BODY SENSOR THERMO. ON THERMO.
  • Page 134: Cold Draft Prevention (heating Cycle)

    2. Processes and functions 2-2 Cold Draft Prevention (Heating Cycle) The cold draft prevention function controls indoor fan speed so a strong draft of cold air will not blow out before the indoor heat exchange coils have warmed up. STANDBY shows on the remote controller when the indoor fan speed is LL (very low) or OFF.
  • Page 135: Automatic Fan Speed (indoor Unit)

    2. Processes and functions 2-3 Automatic Fan Speed (Indoor Unit) By pressing the FAN SPEED button on the remote controller, the fan speed can be set at one of four steps: AUTO., HI., MED., or LO. When set at AUTO. the indoor unit fan speed will be automatically adjusted to the room temperature as the two charts shown below.
  • Page 136: Control Functions

    2. Processes and functions 2-4 Control Functions (2) If the outdoor heat exchanger temperature (C1) is 75°F or higher continuously for 5 minutes, fan Electronic control valve control operation may stop (same conditions as when the Opening of the electronic control valve is controlled so thermostat is OFF).
  • Page 137 2. Processes and functions Heating high-load control Overcurrent protection control (1) If the overcurrent protection circuit detects The below control is performed during heating operation, abnormal current, the compressor is stopped. (Error based on the indoor heat exchanger temperature MAX (E1,E2).
  • Page 138 2. Processes and functions Defrost control Defrost control Defrost sequence Heating operation (25-minute mask) Frost detection Defrost start (reverse cycle defrost) • Operating frequency: 61.8 Hz • Outdoor unit fan: OFF Defrost in progress • Electronic control valve: step 300 •...
  • Page 139: Outdoor Unit Control Pcb

    2. Processes and functions 2-5 Outdoor Unit Control PCB (1) Layout Diagram (CR-CH4872R) Suction temperature (TS) sensor Outdoor air temperature (TO) sensor Heat exchanger temperature (C1) sensor Compressor discharge temperature (TD) sensor Heat exchanger temperature (C2) sensor EEPROM IC Refrigerant recovery switch (S005) Quiet mode plug (CN028) Refrigerant System...
  • Page 140: Outdoor Unit Control Pcb (cr-ch4272r)

    2. Processes and functions 2-6 Outdoor Unit Control PCB (CR-CH4272R) (1) Explanation of Functions S001 Push-button switch (black): Automatic address setting switch • If the system address switch (S002: set to 0 at time of shipment) setting is other than "0"...
  • Page 141 2. Processes and functions Terminal plug 3P plug (black): Terminal plug for the communications line (CN015) • At the time of shipment from the factory, the short-circuiting socket (2P, black) is installed between pins 1 and 2 on the terminal plug (terminal = yes). •...
  • Page 143: Section 3: Electrical Data

    3. ELECTRICAL DATA Indoor Units........................3-2 Outdoor Units......................3 -10...
  • Page 144: Indoor Units

    3. Electrical data 3-1 Indoor Units 4-Way Cassette Type : S-26PU1U6, S-36PU1U6, S-42PU1U6...
  • Page 145 3. Electrical data 4-Way Cassette Type : S-26PU1U6, S-36PU1U6, S-42PU1U6...
  • Page 146 3. Electrical data Wall Mounted Type : S-26PK1U6...
  • Page 147 3. Electrical data Wall Mounted Type : S-26PK1U6...
  • Page 148 3. Electrical data Ceiling Type : S-26PT1U6, S-36PT1U6, S-42PT1U6...
  • Page 149 3. Electrical data Ceiling Type : S-26PT1U6, S-36PT1U6, S-42PT1U6...
  • Page 150 3. Electrical data Low Silhouette Ducted Type : S-26PF1U6, S-36PF1U6...
  • Page 151 3. Electrical data Low Silhouette Ducted Type : S-26PF1U6, S-36PF1U6...
  • Page 152: Outdoor Units

    3. Electrical data 3-2 Outdoor Units U-26PE1U6 3-10...
  • Page 153 3. Electrical data 3-2 Outdoor Units U-26PE1U6 3-11...
  • Page 154 3. Electrical data 3-2 Outdoor Units U-26PS1U6 3-12...
  • Page 155 3. Electrical data 3-2 Outdoor Units U-26PS1U6 3-13...
  • Page 156 3. Electrical data 3-2 Outdoor Units U-36PE1U6 3-14...
  • Page 157 3. Electrical data 3-2 Outdoor Units U-36PE1U6 3-15...
  • Page 158 3. Electrical data 3-2 Outdoor Units U-36PS1U6 3-16...
  • Page 159 3. Electrical data 3-2 Outdoor Units U-36PS1U6 3-17...
  • Page 160 3. Electrical data 3-2 Outdoor Units U-42PE1U6 3-18...
  • Page 161 3. Electrical data 3-2 Outdoor Units U-42PE1U6 3-19...
  • Page 162 3. Electrical data 3-2 Outdoor Units U-42PS1U6 3-20...
  • Page 163 3. Electrical data 3-2 Outdoor Units U-42PS1U6 3-21...
  • Page 165: Section 4: Service Procedures

    4. SERVICE PROCEDURES 4-1. Meaning of Alarm Messages..................4-2 4-2. Symptoms and Parts to Inspect ................... 4-5 4-3. Details of Alarm Messages ...................4-8 4-4. Table of Thermistor Characteristics ................4-14...
  • Page 166: Meaning Of Alarm Messages

    4. Service procedures 4-1. Meaning of Alarm Messages (1) Contents of remote controller switch alarm display Blinking: OFF: Wired Wireless remote remote controller control receiver display display Possible cause of malfunction Error in receiving serial communication signal Serial commu- Remote controller is detecting error signal from nication errors (Signal from main indoor unit in case of group control)
  • Page 167 4. Service procedures Wired Wireless remote remote controller control receiver display display Possible cause of malfunction Ceiling panel connection failure Indoor protection Activation of Fan protective thermostat protective Alternately Float switch device Discharge temperature trouble High pressure switch or compressor motor thermal protector is activated. Outdoor protection Open phase detected, AC power trouble No gas...
  • Page 168 4. Service procedures (2) LED Indicator Messages on Outdoor Control PCB LED 1 LED 2 Remarks Power ON sequence 1. No communication from indoor units in system If it is not possible to advance to 3, repeats 1 → 2. 2.
  • Page 169: Symptoms And Parts To Inspect

    4. Service procedures 4-2. Symptoms and Parts to Inspect Remote Alarm Judgment and controller Judgment condition Clear condition contents correction alarm display Recovery at restart Abnormal discharge Stops when temp. exceeds 1. Check refrigerant cycle temperature 232 ˚F. (gas leak). •...
  • Page 170 4. Service procedures Remote Alarm controller Judgment and correction Judgment condition Clear condition contents alarm display Current detection Inverter stops after alarm is Recovery at restart 1. Stops immediately when circuit trouble detected. Alarm is output restarted. • AC current value is when inverter stops (pre-trip) •...
  • Page 171 4. Service procedures Remote Alarm controller Judgment and correction Judgment condition Clear condition contents alarm display EEPROM trouble Reading/writing failure Recovery at power 1. Check EEPROM (IC007). reset 2. Check outdoor unit control PCB. Mismatch of indoor Indoor unit judges that type Recovery at power 1.
  • Page 172: Details Of Alarm Messages

    4. Service procedures 4-3. Details of Alarm Messages [Alarm “P29”] Input power detection circuit trouble (MDC trouble) Compressor does not run. Breakdown Motor current detection circuit trouble Is power OK? Correct power line. current Check and correct detection wiring. circuit wiring wiring and Check and correct connector...
  • Page 173 4. Service procedures (2) [Alarm “P26”] IGBT short-circuit protection on inverter control (IPDU) PCB HIC PCB trouble) Is power OK? Correct power line. circuit wiring, connector connections, and Correct. reactor connections Has filter PCB RY001 or RY002 relay activated? Has filter PCB Replace filter PCB.
  • Page 174 4. Service procedures HIC-CH4872R HIC-CH2672R (42 Type) (26, 36 Type) Resistance Between terminals Resistance 200 kΩ or more HIC + HIC – 300 kΩ or more HIC + 300 kΩ or more HIC + HIC + 300 kΩ or more 200 kΩ...
  • Page 175 4. Service procedures (4) [Alarm "P22"] Outdoor unit fan motor drive circuit trouble Are connectors CN003 and CN004 connected Correct the connector correctly to the outdoor unit control PCB? connections. Disconnect connectors CN003 and CN004 from outdoor unit control PCB, and rotate fan by hand.
  • Page 176 4. Service procedures Sensor trouble (5) [Alarms “F04,” “F06,” “F07,” “F08,” “F12”] Are connectors CN020, 021, 022, 023, and 024 (TD, TO, C1, C2, and Correct the connector TS sensors) connected connections. correctly to the outdoor unit control PCB? Are the TD, TO, C1, Replace the TD, TO, C1, C2, and TS sensor resistance* C2, or TS sensor.
  • Page 177 4. Service procedures Sensor Temperature Display Function (Displayed both when operating and stopped) The below check procedure can be used to display all remote controller, indoor unit, and outdoor unit sensor temperatures. <Check procedure> (1) Press and hold the button and button simultaneously for 4 seconds or longer.
  • Page 178: Table Of Thermistor Characteristics

    4. Service procedures Check Pin Short-circuit the cooling check pin (or heating check pin) on the outdoor unit control PCB to perform the control described below. 1. Thermistor checks The checks listed below are performed for 1 second each, in order from the top down. The results are displayed by LED 1 and 2.
  • Page 179: Section 5: Outdoor Unit Maintenance Remote Control

    5. OUTDOOR UNIT MAINTENANCE REMOTE CONTROL 5-1. Overview ......................... 5-2 5-2. Functions ........................5-2 5-3. Normal Display Operations and Functions ..............5-3 5-4. Monitoring Operations: Display of Indoor Unit and Outdoor Unit Sensor Temperatures ......................5-6 5-5. Monitoring the Outdoor Unit Alarm History: Display of Outdoor Unit Alarm History ......................
  • Page 180: Overview

    5. Outdoor unit maintenance remote control 5-1. Overview What is the outdoor unit maintenance remote controller? Beginning with the DC-INV series of outdoor units, nonvolatile memory (EEPROM) is used in the outdoor unit PCB. In this way, the setting switches that were located on earlier PCBs have been converted to EEPROM data.
  • Page 181: Normal Display Operations And Functions

    5. Outdoor unit maintenance remote control 5-3. Normal Display Operations and Functions Normal display functions • Connect the special service checker wiring to the outdoor unit PCB. The connection is shown in the figure below. RC (3P, blue) Outdoor PCB connector unit PCB (3P, blue) Special service checker wiring...
  • Page 182 5. Outdoor unit maintenance remote control Display (functions) • Use the temperature setting buttons to change the item code. 00 (1) Blinking 8-alarm code display at pre-trip, LED (2) No. of indoor units connected in that refrigerant system Unit. Nos. of connected indoor units in that refrigerant system *2 Operating status of indoor units in that refrigerant system (blinks when alarms occur) *2 Unit Nos.
  • Page 183 5. Outdoor unit maintenance remote control *2: 7-segment, 4-digit display for remote controller timer display The connected unit Nos. are displayed as shown below, using the 7-segment 4-digit ( ) display and the colon. Display for unit Nos. 1 – 20 Not lit Not lit Not lit...
  • Page 184: Monitoring Operations: Display Of Indoor Unit And Outdoor Unit Sensor Temperatures

    5. Outdoor unit maintenance remote control 5-4. Monitoring Operations: Display of Indoor Unit and Outdoor Unit Sensor Temperatures <Operating procedure> (1) Press and hold the button and button simultaneously for 4 seconds or longer to switch to temperature monitor mode. During temperature monitoring, “Service Monitor”...
  • Page 185: Monitoring The Outdoor Unit Alarm History: Display Of Outdoor Unit Alarm History

    5. Outdoor unit maintenance remote control 5-5. Monitoring the Outdoor Unit Alarm History: Display of Outdoor Unit Alarm History * Displays outdoor unit alarms only. Does not display indoor unit alarms. * Check the indoor unit alarm histories separately using the indoor unit remote controllers or other control device.
  • Page 186 5. Outdoor unit maintenance remote control List of Item Codes Control system schedule Do not set Do not set Control system schedule Do not set Control system schedule Snowfall sensor operation 0 = No sensor, control performed 1 = No sensor, control not performed 2 = Sensor present, control performed 3 = Sensor present, control not performed Outdoor fan quiet mode...
  • Page 187 5. Outdoor unit maintenance remote control Setting mode 2 <Operating procedure> (1) Press and hold the button, button, and button simultaneously for 4 seconds or longer. (2) Use the temperature setting buttons to change the item code. The item codes and setting data are shown in the table below. (3) Use the timer time buttons to change the setting data.
  • Page 188 5. Outdoor unit maintenance remote control List of Item Codes Refrigerant type 407 = R407C 22 = R22 410 = R410A Outdoor unit capacity* 0 = Disabled 80 : 26 type 112 : 36 typ 140 : 42 type Control system schedule Do not set Control system schedule Do not set...
  • Page 189: Preparing For Test Run

    6. TEST RUN 6-1. Preparing for Test Run ....................6-2. Caution........................6-3. Test Run Procedure ....................6-4. Items to Check Before the Test Run ................6-5. Test Run Using the Remote Controller ..............6-6. Precautions ........................ 6-7. Table of Self-Diagnostic Functions and Corrections (U1, K1, T1, F1 Type)....6-8.
  • Page 190 6. Test run 6. TEST RUN 6-1. Preparing for Test Run Before attempting to start the air conditioner, check the following: (1) All loose matter is removed from the cabinet espe- cially steel filings, bits of wire, and clips. (Power must be turned ON (2) The control wiring is correctly connected and all at least 5 hours before electrical connections are tight.
  • Page 191: Caution

    6. Test run U1, K1, T1, F1 Type 6-2. Caution This unit may be used in a single-type refrigerant system where 1 outdoor unit is connected to 1 indoor unit. The indoor and outdoor unit control PCBs utilize a semiconductor memory element (EEPROM). The settings required for operation were made at the time of shipment.
  • Page 192: Items To Check Before The Test Run

    6. Test run 6-4. Items to Check Before the Test Run Turn the breaker ON at least 12 hours in advance in order to energize the crank case heater. Fully open the closed valves on the liquid tube and gas tube sides. 6-5.
  • Page 193 6. Test run...
  • Page 194: Examples Of Wiring Diagrams

    6. Test run 6-8. Examples of Wiring Diagrams Basic wiring diagram 1 Single-type system Be careful to avoid miswiring when connecting the wires. (Miswiring will damage the units.) System address rotary switch (Set to “0” at the time of shipment.) Outdoor unit Ground Power supply...
  • Page 195 6. Test run Basic wiring diagram 2 Group control (when a central control device is not used) Simultaneous-operation multi system A maximum of 8 indoor units can be connected to 1 remote controller. Set the system address (refrigerant tubing system address) before turning on the remote power switch. (Refer to “Setting the system addresses”...
  • Page 196 6. Test run Setting the outdoor unit system addresses For basic wiring diagram 2 (Set the system addresses: 1, 2, 3...) Outdoorunit control PCB 3 – 5HP System address rotary switch (Set to “0” at time of shipment) System address rotary switch System address rotary switch System address 10s digit and 20s digit DIP switch...
  • Page 197 6. Test run Indicating (marking) the indoor and outdoor unit combination number Indicate (mark) the number after automatic address setting is completed. (1) So that the combination of each indoor unit can be easily checked when multiple units are installed, ensure that the indoor and outdoor unit numbers correspond to the system address number on the outdoor unit control PCB, and use a magic marker or similar means which cannot be easily erased to indicate the numbers in an easily visible location on the indoor units (near the indoor unit nameplates).
  • Page 198 201201...

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