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INTRODUCTION
Revision Y06-02Service Manual - KN Series
1. INTRODUCTION
1.1 General
The cassette (900X900) split ceiling mounted range comprise the ST (cooling only) and
RC (heat pump) models, as follows:
• Cooling Only KN24ST, KN30ST, KN36ST 1PH & 3PH; KN45ST 3PH units
• Heat Pump KN24RC, KN30RC, KN36RC 1PH & 3PH; KN45RC 3PH units
1.2 Main Features
The (900X900) Cassette series benefits from the most advanced technological
innovations, namely:
• R410A units
• Microprocessor control.
• Indoor spacial centrifugal fan for low noise operation
• High COP.
• Easy access to interconnecting tubing and wiring connections,
• Integral condensate water pump.
• Automatic treated air sweep.
• Easy installation and service.
1.3 Indoor Unit
The indoor unit is a ceiling mounted, and can be easily fitted to many types of
residential and commercials applications.
It includes:
• Square bended coil with hydrophilic aluminum fins.
• A large diameter centrifugal fan
• Motorized flaps
• Advanced electronic control box assembly.
1.4 Filtration
The Cassette series presents with easily accessible, and re-usable pre-filters (mesh)
1.5 Control
The microprocessor indoor controller, and an infrared remote control, supplied as
standard, provide complete operating function and programming. For further details
please refer to the Operation Manual, Appendix A.
CONTENT
- KN Cassette R410A Series 1
- LIST OF EFFECTIVE PAGES 2
- Table of Contents 3
- 1. INTRODUCTION 4
- 1.6 Outdoor Unit 5
- 1.7 Tubing Connections 5
- 1.8 Accessories 5
- 1.9 Inbox Documentation 5
- 1.10 Matching Table 6
- 2. PRODUCT DATA SHEET 7
- 2.2 KN 24 / OU7-24T R410A 8
- 2.3 KN 30 / OU8-30 R410A 9
- 2.4 KN 30 / OU8-30T R410A 10
- 2.5 KN 36 / OU10-36 R410A 11
- OUTDOOR 11
- PRODUCT DATA SHEET 12
- 3. RATING CONDITIONS 14
- 4. OUTLINE DIMENSIONS 15
- 4.2 Outdoor Unit: OU7-24 16
- 4.3 Outdoor Unit: OU8-30 16
- OUTLINE DIMENSIONS 17
- 5. PERFORMANCE DATA 18
- 5.2.1 Heating 19
- 5.3.1 Cooling 20
- 5.3.2 Heating 21
- 5.4 KN30 / OU8-30 R410A 22
- 5.5.1 Heating 23
- 5.6 KN30 / OU8-30T R410A 24
- 5.7.1 Heating 25
- 5.8 Pressure Curves 26
- 5.8.2 Heating 27
- 5.9 Pressure Curves 28
- -10 -5 0 5 10 15 20 29
- 5.9 KN36 / OU10-36 R410A 30
- 5.10.1 Heating 31
- 5.11 Pressure Curves 32
- 5.12 KN36 / OU10-36T R410A 34
- 5.13.1 Heating 35
- 5.14 Pressure Curves 36
- 5.14.2 Heating: 37
- 5.15 KN45 / OU10-47T R410A 38
- 5.16.1 Heating 39
- 5.17 Pressure Curves 40
- 5.17.2 Heating 41
- 6. ELECTRICAL DATA 42
- ELECTRICAL DATA 43
- 7. WIRING DIAGRAMS 44
- WIRING DIAGRAMS 45
- 7.6 Outdoor Unit: OU10-36 46
- 7.7 Outdoor Unit: OU10-36T 47
- 7.8 Outdoor Unit: OU10-47T 47
- 8. ELECTRICAL CONNECTIONS 48
- 9. REFRIGERATION DIAGRAMS 49
- 9.1.2 KN 30 R410A 50
- REFRIGERATION DIAGRAMS 51
- 9.1.3 KN 36 R410A 51
- 9.1.4 KN 36T R410A 52
- 9.1.5 KN 45T R410A 53
- 9.2 Cooling Only Models 54
- 10. TUBING CONNECTIONS 55
- ¼” ⅜” ½” ⅝” ¾” 55
- 11. CONTROL SYSTEM 56
- CONTROL SYSTEM 57
- 11.2 Control Function 59
- 11.3 General Functions 60
- 11.3.5 Protections 61
- 11.3.6 Thermistors Operation 61
- 11.3.7 RV Fault 62
- 11.3.8 General Features 62
- 11.4 Cooling Mode 63
- 11.4.3 Sequence Diagrams 64
- (RT - SPT) [ 65
- 11.5 Heating Mode 66
- 50)2( tt ICTandSPTRT 68
- 11.6 Heating, RC or SH Group 69
- 11.7.1 Sequence Diagram 70
- 11.8 Heating, RH Group 71
- 11.10.2 Sequence Diagrams 74
- 11.11 Dry Mode 75
- 11.11.2 DRY, SH or RH group 77
- 11.12 Protection 78
- Time [Hr] 85
- 11.16 System Diagnostics 91
- 12. TROUBLESHOOTING 92
- TROUBLESHOOTING 93
- 13.5 Indoor Unit: KN 36 98
- 13.6 Indoor Unit: KN 45 99
- *Optional 102
- 14. OPTIONAL ACCESSORIES 130
- Service Manual - KN Series 132
- OPTIONAL ACCESSORIES 132
- Revision Y06-02 132
- APPENDIX A 136
- CONTENTS 137
- INSTALLATION 138
- NAMES AND FUNCTIONS 140
- OPERATION ATTENTION 141
- TEMPORARY OPERATIONS 142
- ADJUSTING AIR FLOW DIRECTION 142
- MAINTENANCE 143
- RESTART AFTER A LONG TIME 145
- TROUBLES AND CAUSES 146
- REPARATION 147
- PRECAUTION 149
- INSTALLATION INFORMATION 150
- ATTACHED FITTINGS 151
- INSTALLATION PLACE 152
- INDOOR UNIT INSTALLATION 153
- CAUTIONS 154
- OUTDOOR UNIT INSTALLATION 156
- INSTALL THE CONNECTING PIPE 157
- Flaring the nuts 158
- Use the market brass pipe 158
- Operate the stop valves 160
- CHECK THE LEAKAGE 160
- CONNECT THE DRAIN PIPE 161
- WIRING 163
- 3. ELECTRICAL CONNECTIONS 164
- Figure 36: Three Phase Units 165
- 3.2 Interconnecting cable 165
- Chart 38 167
- TEST OPERATION 168
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