Technical Data
Page
Case of Improper Installation
When Installing
When Connecting Refrigerant Tubing
When Wiring
Contents
Specifications
Unit Specifications
Model No
Indoor Unit KH2672R Outdoor Unit CH2672R
Indoor Unit KH3072R Outdoor Unit CH3072R
Indoor Unit KH3672R Outdoor Unit CH3672R
Indoor Unit KH2672R Outdoor Unit C2672R
Indoor Unit KH3072R Outdoor Unit C3072R
Indoor Unit KH3672R Outdoor Unit C3672R
Unit Specifications Way Air Discharge Semi-Concealed Type
RCS-SH80UA. WL / RCS-BH80UA. WL
Indoor Unit XH4272R Outdoor Unit CH4272R
Indoor Unit XH2672R Outdoor Unit C2672R
Indoor Unit XH3672R Outdoor Unit C3672R
Indoor Unit XH4272R Outdoor Unit C4272R
Unit Specifications Concealed-Duct Type
Indoor Unit UH3672R Outdoor Unit CH3672R
Indoor Unit UH2672R Outdoor Unit C2672R
Indoor Unit UH3672R Outdoor Unit C3672R
Unit Specifications Ceiling-Mounted Type
Indoor Unit TH2672R Outdoor Unit CH2672R
Indoor Unit THH3672R Outdoor Unit CH3672R
Indoor Unit TH3672R Outdoor Unit CH3672R
Indoor Unit TH4272R Outdoor Unit CH4272R
Indoor Unit TH2672R Outdoor Unit C2672R
Indoor Unit TH3672R Outdoor Unit C3672R
Indoor Unit TH4272R Outdoor Unit C4272R
Controller P. C. B Assy
Remote controller Option
Model No XH2672R Source
Control circuit fuse
Model No XH3672R Source
Model No XH4272R Source
Model No TH2672R Source
Auto louver motor
Model No TH3672R Source
Model No TH4272R Source
Fan Number ... diameter
Model No THH2672R Source
Heater Assy Aux. Heater
Model No THH3672R Source
Model No UH2672R Source
Model No UH3672R Source
Model No KH2672R Source
Fan
Model No KH3072R Source
Louver Motor
Model No KH3672R Source
Model No KHH2672R Source
Heater Element Aux. Heater
Controller P.C.B. Assy
High pressure switch
Model No
Compressor
CH3072R / CH3672R
CH4272R
C2672R
C3072R / C3672R
C4272R
Specifications Other Component Specifications Indoor Unit
Model No XH3672R Power Transformer
Model No XH4272R Power Transformer
Thermistor Coil sensor
Model No TH2672R Power Transformer
Thermistor Room or coil sensor
Model No TH3672R Power Transformer
Model No TH4272R Power Transformer
Model No THH2672R Power Transformer
Model No THH3672R Power Transformer
Model No UH2672R Power Transformer
Model No UH3672R Power Transformer
Model No KH2672R Power Transformer
Model No KH3072R Power Transformer
Model No KHH2672R Power Transformer
Solenoid coil or 4 way valve
Model No CH2672R, C2672R
Electric expansion valve MOV
Model No CH3072R, C3072R, CH3672R, C3672R
Model No CH4272R, C4272R
29/32
Hole
19/32
31/32 12-7/32
Dimension inch
56-25/32 Air outlet duct flange
Thickness more than T1/16 inch
Dimensional data Indoor unit Wall Mounted Type KHH2672R
1912XS
SM831148
Specifications Dimensional Data Outdoor Unit CH4272R, C4272R
SM831148
Temperature Indoor Air Intake Outdoor Air Intake
SM831148
Model
Specifications Noise Criterion Curves Ceiling Mounted Type
Noise Criterion Curves Concealed Duct Type
Sound
Specifications Noise Criterion Curves Wall Mounted Type
Specifications Noise Criterion Curves Outdoor Units
Increasing the Fan Speed
How to read the diagram
Indoor Fan Performance Type
Model 26 Type
Model 36, 42 Type
Model 36 Type
Model 42 Type
Model KHH2672R
Air throw distance chart Wall Mounted Type
KH3672R
Installation Instructions Tubing Length Single type
Indoor unit type 26, 30, 36 types Type
CH2672R CH3072R CH4272R CH3672R
Tubing Data for Models
List of Connection Tube Sizes
Way Air Discharge Type Concealed-Duct Type
Indoor Unit
Ceiling-Mounted Type
Wall-Mounted Type
Installation requirements
Installation space
Outdoor Unit
Precautions for Installation in Heavy Snow Areas
Installing the Unit in Heavy Snow Areas
Air-Discharge Chamber for Top Discharge
Specifications Dimensions of Wind Ducting
For outdoor unit 4272R
Wind
Front and both sides must remain open
Dimensions of Snow Ducting
4272R
4272R unit with STK-BDR140U
Specifications Reference diagram for snow-proof vents
Installation in front-rear rows
Power Supply
Electrical Wiring
General Precautions on Wiring
Outdoor Unit
CH Type
Indoor Unit Power Supply
Wiring System Diagrams
U Type
Loose wiring may cause the terminal to overheat or result
How to Connect Wiring to the Terminal For stranded wiring
101
KH3072R KH3672R KHH2672R KH2672R
Processes and Functions
Processes and functions Room Temperature Control
Chart Summary and Explanations
Processes and functions Heating
Cold Draft Prevention Heating Cycle
Processes and functions
Chart Explanations and notes
Automatic Fan Speed Indoor Unit
Outdoor unit fan control
Discharge temperature release control
Current release control
Coil heating control
Current release value shift control
Freeze prevention low-temperature release control
Overcurrent protection control
Heating high-load control
Defrost control
Outdoor Unit Control PCB
Outdoor Unit Control PCB CR-CH4272R
Method of System Address Setting
Example of wiring
Page
Electrical Data
DiagramWiring Electric
Schematic Diagram
Electrical data Ceiling Mounted Type TH2672R/TH3672R/TH4272R
III-5
Electrical data Ceiling Mounted Type THH2672R/THH3672R
III-7
Electrical data Concealed Duct Type UH2672R/UH3672R
Schematic Diagram
Electrical data Wall Mounted Type KH2672R
III-11
Electrical data Wall Mounted Type KH3072R/KH3672R
III-13
Electrical data Wall Mounted Type KHH2672R
III-15
Outdoor Units
Schematic Diagram
DiagramWiring Electric
III-19
CH3072R/CH3672R
III-21
C3072R/C3672R
III-23
CH4272R
III-25
C4272R
III-27
Page
Service Procedures
Service procedures Meaning of Alarm Messages
Contents of remote controller switch alarm display
Service procedures
Remarks
Remote Alarm Judgment condition Clear condition
Service procedures Symptoms and Parts to Inspect
Contents Correction
Remote Alarm Judgment and correction
Judgment condition Clear condition Contents
Remote Alarm
Eeprom
Alarm P29
Service procedures Details of Alarm Messages
MDC trouble
Alarm P26
HIC PCB trouble
Alarm E31
Communications Trouble within unit
Alarm P22
Alarms F04, F06, F07, F08, F12
Sensor Temperature Correlation Table
Check procedure
Sensor installation Sensor type Location
Outdoor Air Temp. TO, Intake Temp. TS, Heat
Table of Thermistor Characteristics
Check Pin
Exchanger Temp. C1 Sensor, Heat Exchanger Temp. C2 Sensor
Outdoor Unit Maintenance Remote Control
Outdoor unit maintenance remote control Overview
Present on earlier outdoor unit PCBs
Switching between cooling/heating Operation
All units start/stop Fig
All units test run Operation
Display functions
Outdoor unit maintenance remote control
Item code Display contents Remarks
Sample displays
Display for unit Nos
Depending on the model, some items may not be displayed
Item code Meaning of Code
Operating procedure
List of Item Codes
Item code Parameter
Outdoor unit maintenance remote control
Figures represent the capacity data for each model
Test RUN
Test RUN
Test run
Test run U, K Type
Test run Items to Check Before the Test Run
Outdoor unit control PCB
VI-5
Test run Examples of Wiring Diagrams
Basic wiring diagram
Wiring procedure
2P DIP switch Rotary switch
Setting the outdoor unit system addresses
Automatic address setting using the remote controller
System address No System address 10s digit
Setting procedure
Main-sub remote controller control
Connecting 2 remote controllers to control 1 indoor unit
Terminal plate
May
