Page 1: Service Manual
Service Manual WNG LED/LCD DCI Inverter Series Indoor Units Outdoor Units WNG 50 DCI DCI 50 WNG 60 DCI DCI 60 WNG 80 DCI DCI 80 REFRIGERANT HEAT PUMP R410A NOVEMBER – 2005 CONTENT...
Page 2 LIST OF EFFECTIVE PAGES LIST OF EFFECTIVE PAGES Note: Changes in the pages are indicated by a “Revision#” in the footer of each effected page (when none indicates no changes in the relevant page). All pages in the following list represent effected/ non effected pages divided by chapters.
Page 3 TABLE OF CONTENTS Table of Contents INTRODUCTION WNG 50/60/80 ................1-1 PRODUCT DATA SHEET WNG 50/60/80 .............2-1 RATING CONDITIONS WNG 50/60/80 ..............3-1 OUTLINE DIMENSIONS WNG 50/60/80 ...............4-1 PERFORMANCE DATA & PRESSURE CURVES WNG 50/60/80 ......5-1 SOUND LEVEL CHARACTERISTICS WNG 50/60/80 .........6-1 ELECTRICAL DATA WNG 50/60/80 ..............7-1 WIRING DIAGRAMS WNG 50/60/80 ..............8-1 REFRIGERATION DIAGRAMS WNG 50/60/80 ............9-1...
Page 4: Main Features
INTRODUCTION INTRODUCTION General The new WNG DCI INVENTER split wall mounted range has expanded, comprising two additional RC(heat pump) models: WNG50 ● WNG60 ● WNG80 ● The indoor WNG units are available as LED or LCD display types, featuring esthetic design, compact dimensions, and low noise operation.
Page 5: Indoor Unit
INTRODUCTION Indoor Unit The indoor unit is wall mounted, and can be easily ﬁtted to many types of residential and commercials applications. Indoor Unit features: Feature WNG 50 WNG60 WNG80 Display LCD or LED Ionizer Fresh air Indoor fan motor Variable speed (PG) Horizontal motorized louver Vertical motorized louver...
Page 6: Outdoor Unit
INTRODUCTION Outdoor Unit The WNG DCI INV outdoor units can be installed as ﬂoor or wall mounted units by using a wall supporting bracket. The metal sheets are protected by anti- corrosion paint work allowing long life resistance. All outdoor units are pre-charged. For further information please refer to the Product Data Sheet, Chapter 2.
Page 7 INTRODUCTION 1.11 Matching Table 1.11.1 R410A INDOOR UNITS OUTDOOR UNITS MODEL REFR” WNG50 DCI WNG60 DCI WNG80 DCI DCI 50 R410A √ DCI 60 R410A √ DCI 80 R410A √ Revision Y05-02 Service Manual - WNG 50_60_80 DCI CONTENT...
Page 8: Product Data Sheet
PRODUCT DATA SHEET PRODUCT DATA SHEET WNG50 DCI Model Indoor Unit WNG 50 Model Outdoor Unit DCI 50 Installation Method of Pipe Flared Characteristics Units Cooling Heating Btu/hr 17060(5120-20470) 20470(5120-25930) Capacity 5.00(1.50-6.00) 6.00(1.50-7.60) Power input 1.46(0.50-2.00) 1.66(0.45-2.20) EER (Cooling) or COP(Heating) 3.42 3.61 Energy efﬁciency class...
Page 9 PRODUCT DATA SHEET WNG60 DCI Model Indoor Unit WNG-60 Model Outdoor Unit DCI60 Installation Method of Pipe Flared Characteristics Units Cooling Heating Btu/hr 20470(5120-22860) 22180(5120-26950) Capacity 6.00(1.50-6.70) 6.50(1.80-7.90) Power input 1.99(0.50-2.20) 1.90(0.45-2.30) EER (Cooling) or COP(Heating) 3.02 3.42 Energy efﬁciency class Power supply V/Ph/Hz 220-240V/Single/50Hz...
Page 10 PRODUCT DATA SHEET WNG80 DCI Model Indoor Unit WNG- 80 Model Outdoor Unit DCI 80 Installation Method of Pipe Flared Characteristics Units Cooling Heating Btu/hr 26620(5100~30035) 29010 (5100~32420) Capacity 7.8 (1.50~8.8) 8.5 (1.5~9.5) Power input 2.59 (0.50~3.1) 2.65 (0.5~3.2) EER (Cooling) or COP(Heating) 3.01 3.21 Energy efﬁciency class...
Page 11: Rating Conditions
RATING CONDITIONS RATING CONDITIONS Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units). Cooling: Indoor: C DB 19 C WB Outdoor: 35 C DB Heating: Indoor: C DB Outdoor: 7 C DB 6 C WB Operating Limits 3.1.1 R410A Indoor...
Page 12: Outline Dimensions
OUTLINE DIMENSIONS OUTLINE DIMENSIONS Indoor Unit: WNG 50/60 DCI Outdoor Unit: DCI 50 Revision Y05-02 Service Manual - WNG 50_60_80 DCI CONTENT...
Page 13 OUTLINE DIMENSIONS Outdoor Unit: DCI 60 Revision Y05-02 Service Manual - WNG 50_60_80 DCI CONTENT...
Page 14 OUTLINE DIMENSIONS Indoor Unit: WNG 80 MOUNTING TEMPLATE TO BE USED FOR LOCATION 1200 CEILING OF INDOOR UNIT ON THE WALL INDOOR UNIT OUTLINE MOUTING PLATE OUTLINE TUBING WALL OPENING (FOR REAR ROUTING) TUBING WALL OPENING (FOR REAR LEFT ROUTING) AIR INTAKE 1200 AIR INTAKE...
Page 15 PERFORMANCE DATA & PRESSURE CURVES PERFORMANCE DATA WNG 50 DCI 5.1.1 Cooling Capacity (kW) - Run Mode 230[V] : Indoor Fan at High Speed. ID COIL ENTERING AIR DB/WB TEMPERATURE [ OD COIL ENTERING AIR DB 22/15 24/17 27/19 29/21...
Page 16 PERFORMANCE DATA & PRESSURE CURVES 5.1.3 Heating Capacity (kW) - Run Mode) 230[V] : Indoor Fan at High Speed. ID COIL ENTERING AIR DB TEMPERATURE [ OD COIL ENTERING AIR DB/WB DATA TEMPERATURE 2.73 2.34 1.94 -15/-16 1.16 1.24 1.33 3.60 3.21 2.82...
Page 17 PERFORMANCE DATA & PRESSURE CURVES WNG 60 DCI 5.2.1 Cooling Capacity (kW) - Run Mode 230[V] : Indoor Fan at High Speed. ID COIL ENTERING AIR DB/WB TEMPERATURE [ OD COIL 22/15 24/17 27/19 29/21 32/23 ENTERING AIR DB DATA TEMPERATURE [ 80 - 110 % of nominal -10 - 20...
Page 18 PERFORMANCE DATA & PRESSURE CURVES 5.2.3 Heating Capacity (kW) - Run Mode 230[V] : Indoor Fan at High Speed. ID COIL ENTERING AIR DB TEMPERATURE [ OD COIL ENTERING AIR DB/WB DATA TEMPERATURE 2.96 2.53 2.11 -15/-16 1.33 1.42 1.52 3.90 3.48 3.05...
Page 19 PERFORMANCE DATA & PRESSURE CURVES WNG 80 DCI 5.3.1 Cooling Capacity (kW) - Run Mode 230[V] : Indoor Fan at High Speed. ID COIL ENTERING AIR DB/WB TEMPERATURE [ OD COIL 22/15 24/17 27/19 29/21 32/23 ENTERING AIR DB DATA TEMPERATURE [ 80 - 110 % of nominal -10 - 20...
Page 20 PERFORMANCE DATA & PRESSURE CURVES 5.3.3 Heating Capacity (kW) - Run Mode 230[V] : Indoor Fan at High Speed. ID COIL ENTERING AIR DB TEMPERATURE [ OD COIL ENTERING AIR DB/WB DATA TEMPERATURE 3.87 3.31 2.75 -15/-16 1.85 1.99 2.12 5.11 4.55 3.99...
Page 21 PERFORMANCE DATA & PRESSURE CURVES Capacity Correction Factor Due to Tubing Length 5.4.1 WNG 50/60/80 DCI: Cooling 1.02 1.00 0.98 0.96 0.94 0.92 0.90 0.88 0.86 Tubing length(m) 5.4.2 Heating 1.02 1.00 0.98 0.96 0.94 0.92 0.90 0.88 0.86 0.84 Tubing Length(m) Service Manual - WNG 50_60_80 DCI Revision Y05-02...
Page 22 PERFORMANCE DATA & PRESSURE CURVES 5.4.3 Pressure Curves 5.4.4. Model: WNG 50 DCI Cooling — Test Mode Suction Pressure VS.Outdoor Temp. 1100 1000 Indoor DB/WB Tem p' 2 2 / 1 5 2 4 / 1 7 2 7 / 1 9...
Page 23 PERFORMANCE DATA & PRESSURE CURVES 5.4.5. Heating — Test Mode Suction Pressure VS.Outdoor Temp. 1100 1000 Indoor DB Outdoor WB Temperature[ºC ] Discharge Pressure VS. Outdoor Temp. 4000 3500 Indoor DB 3000 2500 2000 1500 1000 Outdoor WB Temperature Service Manual - WNG 50_60_80 DCI Revision Y05-02 CONTENT...
Page 24 PERFORMANCE DATA & PRESSURE CURVES — Test Mode 5.4.6 Model: WNG 60 DCI Cooling Suction Pressure VS.Outdoor Temp. 1100 1000 Indoor DB/WB Tem p' 2 2 / 1 5 2 4 / 1 7 2 7 / 1 9 2 9 / 2 1 3 2 / 2 3 Outdoor DB Temperature[ºC ] Discharge Pressure VS.
Page 25 PERFORMANCE DATA & PRESSURE CURVES 5.4.7 Heating — Test Mode Suction Pressure VS.Outdoor Temp. 1100 1000 Indoor DB Outdoor WB Temperature[ºC ] Discharge Pressure VS. Outdoor Temp. 4000 3500 3000 Indoor DB 2500 2000 1500 1000 Outdoor WB Temperature [ºC ] Service Manual - WNG 50_60_80 DCI Revision Y05-02 5-11...
Page 26 PERFORMANCE DATA & PRESSURE CURVES — Test Mode 5.4.8 Model: WNG 80 DCI Cooling Suction Pressure VS.Outdoor Temp. 1100 1000 Indoor DB/WB Tem p' 2 2 / 1 5 2 4 / 1 7 2 7 / 1 9 2 9 / 2 1 3 2 / 2 3 Outdoor DB Temperature[ºC ] Discharge Pressure VS.
Page 27 PERFORMANCE DATA & PRESSURE CURVES 5.4.9 Heating — Test Mode Suction Pressure VS.Outdoor Temp. 1100 1000 Indoor DB Outdoor WB Temperature[ºC ] Discharge Pressure VS. Outdoor Temp. 4000 3750 3500 3250 Indoor DB 3000 2750 2500 2250 2000 1750 1500 1250 1000 Outdoor WB Temperature[ºC ]...
Page 28: Sound Level Characteristics
SOUND LEVEL CHARACTERISTICS SOUND LEVEL CHARACTERISTICS Sound Pressure Level Figure 1. Wall Mounted Figure 2. Floor Mounted Figure 3. Ducted Figure 4. Cassette Sound Pressure Level Spectrum (Measured as Figure 1) WNG 50 WNG 60 NC-70 NC-70 NC-60 NC-60 NC-50 NC-50 NC-40 NC-40...
Page 29 SOUND LEVEL CHARACTERISTICS Sound Pressure Level Spectrum (Measured as Figure 1) WNG 80 NC-70 NC-60 NC-50 NC-40 NC-30 APPROXIMATE THRESHOLD OF HEARING FOR NC-20 CONTINUOUS NOISE BAND CENTER FREQUENCIES, Hz Revision Y05-02 Service Manual - WNG 50_60_80 DCI CONTENT...
Page 30: Outdoor Units
SOUND LEVEL CHARACTERISTICS Outdoor units Microphone Distance from Unit Sound Pressure Level Spectrum (Measured as Figure 5) DCI 50 Cooling DCI 50 Heating NC-70 NC-70 NC-60 NC-60 NC-50 NC-50 NC-40 NC-40 NC-30 NC-30 APPROXIMATE APPROXIMATE THRESHOLD OF THRESHOLD OF HEARING FOR HEARING FOR NC-20 NC-20...
Page 31 SOUND LEVEL CHARACTERISTICS Sound Pressure Level Spectrum (Measured as Figure 5) DCI 80 Cooling DCI 80 Heating NC-70 NC-70 NC-60 NC-60 NC-50 NC-50 NC-40 NC-40 NC-30 NC-30 APPROXIMATE APPROXIMATE THRESHOLD OF THRESHOLD OF HEARING FOR HEARING FOR NC-20 NC-20 CONTINUOUS CONTINUOUS NOISE NOISE...
Page 32: Electrical Data
ELECTRICAL DATA ELECTRICAL DATA Single Phase Unit Model WNG50 WNG60 WNG80 Power Supply 1 PH ,220-240VAC ,50HZ Connected to To indoor Maximum Current 13.5A 15.7A 45 A <35A Inrush Current \ Starting Current\ 13.5 A 15.7A Circuit Breaker 20 A Power Supply 3 X 2.5 mm²...
Page 33: Wiring Diagrams
WIRING DIAGRAMS WIRING DIAGRAMS Indoor Unit: WNG 50_60 DCI Horizontal step motor Vertical step motor IFAN RAT ICT F resh A i r Ionizer capacitor 2uF 450V P11P15 ( red) P5(white) P6(White) P8 ( Red) P10(Red) Indoor unit controller PCB megatool Jumper PH-12...
Page 34 WIRING DIAGRAMS Indoor & Outdoor Units: WNG 80 DCI Revision Y05-02 Service Manual - WNG 50_60_80 DCI CONTENT...
Page 35: Refrigeration Diagrams
REFRIGERATION DIAGRAMS REFRIGERATION DIAGRAMS Heat Pump Models 9.1.1 WNG 50_60 / DCI 50_60 DCI: Cooling Mode 9.1.2 WNG 50_60 / DCI 50_60 DCI: Heating Mode E E V Revision Y05-02 Service Manual - WNG 50_60_80 DCI CONTENT...
Page 36 REFRIGERATION DIAGRAMS 9.1.3 WNG 80 / DCI 80 DCI: Cooling Mode 9.1.4 WNG 80 / DCI 80 DCI: Heating Mode Revision Y05-02 Service Manual - WNG 50_60_80 DCI CONTENT...
Page 37 TUBING CONNECTIONS TUBING CONNECTIONS TUBE (Inch) ¼” ⅜” ½” ⅝” ¾” TORQUE (Nm) Flare Nuts 11-13 40-45 60-65 70-75 80-85 Valve Cap 13-20 13-20 18-25 18-25 40-50 Service Port Cap 11-13 11-13 11-13 11-13 11-13 Valve Protection Cap-end Refrigerant Valve Port (use Allen wrench to open/close) Valve Protection Cap Refrigerant Valve Service Port Cap...
Page 38 CONTROL SYSTEM CONTROL SYSTEM WNG 50, 60 11.1 General Functions and Rules (for single split models) The DCI software is fully parametric. All the model dependent parameters are shown in Blue color and with Italic style [parameter]. The parameters values are given in the last section of this control logic chapter of the service manual.
Page 39 CONTROL SYSTEM Target Frequency Setting 11.3.2 The compressor target frequency is a function of the NLOAD number sent from the indoor controller and the outdoor air temperature. Basic Target Frequency Setting: NLOAD Target Frequency Maximum frequency 10 < NLOAD < 127 Interpolated value between minimum and maximum frequency Minimum frequency Compressor is stopped...
Page 40: Outdoor Fan Control
CONTROL SYSTEM 11.4 Indoor Fan Control 10 Indoor fan speeds are determined for each model. 5 speeds for cool/dry/fan modes and 5 speeds for heat mode. When user sets the indoor fan speed to a fixed speed (Low/ Medium/ High), unit will operate constantly at set speed.
Page 41 CONTROL SYSTEM Outdoor Fan Speed Compressor Frequency (CF) Routine A Routine B Routine C Routine D CF = 0 Very Low OFLowFreq 10 ” CF < Medium Very Low OFLowFreq OFMedFreq ” CF < High Medium OFMedFreq ” CF In cooling mode, the extra rule is as the below: Change To Higher OFAN Cool state (*1) Change To lower...
Page 42 CONTROL SYSTEM 11.9 Ionizer Control Ionizer is on when unit is on AND indoor fan is on AND Ionizer power switch (on Ionizer) is on 11.10 Electro Static Filter (ESF) Control ESF is on when ESF switch is on, Safety switch is pressed, unit is on, AND indoor fan is on.
Page 43 CONTROL SYSTEM Model J2 Shorted J2 Opened Wall mounted Compensation Disabled Compensation Enabled Cassette Compensation Enabled Compensation Disabled Ducted Compensation Enabled Compensation Disabled Floor/Ceiling Compensation Disabled Compensation Enabled 11.16 Indoor Fan Control in Heat Mode Indoor fan speed depends on the indoor coil temperature: ICTVL ICTL ICTH...
Page 44 CONTROL SYSTEM Indoor Coil Defrost Protection 11.19.1 ICT Trend Fast Increasing No change Decreasing Fast Increasing Decreasing ICT < -2 -2 ” ICT < 0 0 ” ICT < 2 2 ” ICT < 4 4 ” ICT < 6 Norm Norm 6 ”...
Page 45 CONTROL SYSTEM Compressor Temperature Control Status Else Increases Norm Stop Compressor Compressor over Current Protection 11.19.4 Stop-Compresor CCROC4 HzDown2 CCROC3 HzDown1 CCROC2 Stop-Rise CCROC1 Normal Heat Sink over Heating Protection (NA for DCI 25 and 35 11.19.5 HST Trend Decreasing No Change Increasing HST >...
Page 46 CONTROL SYSTEM Outdoor Coil Deicing Protection 11.19.6 Deicing Starting Conditions: Deicing operation will start when either one of the following conditions exist: Case 1: OCT < OAT – 8 AND TLD > DI Case 2: OCT < OAT – 12 AND TLD > 30 minutes. Case 3: OCT is Invalid AND TLD >...
Page 47 CONTROL SYSTEM 11.20 Condensate Water Over Flow Protection Each of the pins P1, P2, P3 can have two options: 1 – When it is shorted with P4 0 – When it is not shorted to P4 3 Levels Logic (used in floor/ceiling models) 11.20.1 Level L2&3...
Page 48 CONTROL SYSTEM 1 Level Logic (used in all models except for floor/ceiling models) 11.20.2 Level Don’t Normal care Don’t Overflow care Overflow when Overflow when unit is ON unit is OFF Overflow Water Level Normal OPER BLINK NLOAD is NLOAD forced to 0 PUMP 8 min...
Page 49 CONTROL SYSTEM 11.23 On Unit Controls and Indicators Indoor Unit Controller Controls and Indicators for All Models 11.23.1 STAND BY INDICATOR Lights up when the Air Conditioner is connected to power and ready to receive the R/C commands Lights up during operation. Blinks for 300 msec., to announce that a R/C infrared signal has been received and stored.
Page 50 CONTROL SYSTEM Indoor Unit Controls and Indicators for LCD Display 11.23.2 STBY Cool Heat Auto SPT(1*) SPT(1*) SPT(1*) SPT(1*) SPT(1*) OFF(2*) ON(2*) ON(2*) ON(2*) ON(2*) ON(2*) OFF(2*) OFF(2*) OFF(2*) OFF(2*) OFF(2*) OFF(2*) (Low) User User User User User (Med) setting setting setting setting...
Page 51: Jumper Settings
CONTROL SYSTEM 11.25 Jumper Settings Indoor Unit Controller 11.25.1 0 = Open Jumper (disconnect jumper). 1 = Close Jumper (connect jumper). Self test Jumper – J1 OPERATION SELF-TEST NORMAL Compensation Jumper – J2 Model J2 (Default) Compensation Wall Mounted Activated Floor/Ceiling Deactivated Ducted/cassette...
Page 52 CONTROL SYSTEM Model selection Jumper – J7, J8 Model J9- Presence Detector/Power Shedding OPERATION Presence Detector Power Shedding Jumper – J10 OPERATION WNG DCI LCD Outdoor Unit Controller 11.25.2 JP9 JUMPER LAYOUT Reserved (PIN 9) ODU3 (PIN 7) ODU2 (PIN 5) ODU1 (PIN 3) ODU0 (PIN 1) (PIN 10)
Page 53: Test Mode
CONTROL SYSTEM 11.26 Test Mode Entering Test Mode 11.26.1 System can enter Test mode in two ways: Automatically when the following conditions exists for 30 minutes continuously: o Mode = Cool, Set point = 16, Room temperature = 27±1, Outdoor temperature = 35±1 o Mode = Heat, Set point = 30, Room temperature = 20±1, Outdoor temperature = 7±1...
Page 54 CONTROL SYSTEM 11.30 Compressor Frequency Control Outdoor Unit NLOAD setting 11.30.1 The MSMP controller gets the NLOAD from each of the indoor units, and sends a combined NLOAD to the outdoor unit control. The combined NLOAD is a weighted average of the indoor units NLOAD. The weight of the indoor units as a function of their nominal capacity: Indoor Unit Capacity [kW] (kBtu/hr) Capacity Code...
Page 55 CONTROL SYSTEM 11.34 SW Parameters Indoor Units SW Parameters 11.34.1 General Parameters for All Models: Parameters defining the indoor fan speed as a function of Indoor Coil temperature in heat mode (ICT): ICTST Speed ICT to stop indoor fan ICTVLSpeed ICT to go down to very low speed ICTLSpeed ICT to start in very low speed...
Page 56 CONTROL SYSTEM Outdoor Units SW Parameters: 11.34.2 Parameter Name DCI25 DCI35 DCI 50 DCI50 DUO DCI 60 Compressor Parameters MinFreqC MaxFreqC MinFreqH MaxFreqH Step1Freq Step2Freq Step3Freq Frequency limits as a function of outdoor air temperature MaxFreqAsOATC MaxFreqAsOAT1H MaxFreqAsOAT2H Compressor Over Heating Protection CTTOH1 CTTOH2 CTTOH3...
Page 57 CONTROL SYSTEM CONTROL SYSTEM WNG 80 DCI 12.1 Abbreviations Abbreviation Deﬁnition Air Condition Building Management System System Power Compressor Top Temperature sensor DC Inverter Electronic Expansion Valve Heating Element Human Machine Interface Heat Sink Temperature sensor Hertz (1/sec) – electrical frequency Indoor Coil Temperature (RT2) sensor Indoor Unit Micro Controller Unit...
Page 58: Product Overview
CONTROL SYSTEM 12.2 Product Overview 12.2.1 Block Diagram Control Communication Power Input Filter Switching Drivers, A/D Power Application Control Drivers Alarm OFAN EEV’s LED’s Comp. Base Heater 12.2.2 Compressor DC brush less and sensor less 2.5/3 horsepower motor inverter driven compressor. 12.2.3 Outdoor Fan DC brush less motor.
Page 59 CONTROL SYSTEM 12.2.7 Dry Contacts Dry contacts are used to interface the system with an external building management system (BMS). • Night input. Switches the system to night mode when closed. During night mode, the outdoor unit speed will be reduced in order to reduce the system noise level.
Page 60 CONTROL SYSTEM 12.3 General Operating Rules 12.3.1 Initialization Initialization process is the ﬁrst operation done each time power is up. The targets of the initialization are: • Addressing of IDU • Identiﬁcation of connected IDU • IDU Matching Check • EEV’s homing (reset position) •...
Page 61 CONTROL SYSTEM 12.3.2.3 ‘No Communication’ fault If no legal transmission or no message received for 30 seconds, system enters ‘No Communication’ fault. • If there is no communication, the following will be performed: 1. The unit changes to STBY. 2. The system will scan all the communication channels. 3.
Page 62 CONTROL SYSTEM 12.4 Indoor Unit Control 12.4.1 Indoor Fan Control 10 Indoor fan speeds are determined for each model. 5 speeds for each mode cool/dry/fan or heat. When user sets the indoor fan speed to a ﬁxed speed (Low/ Medium/ High), unit will operate constantly at set speed.
Page 63 CONTROL SYSTEM 12.4.3.2 Indoor Fan Control in Heat Mode Indoor fan speed depends on the indoor coil temperature: ICTST ICTVL ICTL ICTH ICTT 12.4.4 Auto Cool/Heat Mode When in auto cool heat mode unit will automatically select between cool and heat mode according to the difference between the actual room temperature and the user set point temperature (ΔT).
Page 64 CONTROL SYSTEM 12.4.9 Indoor Unit Dry Contact Indoor unit Dry contact has two alternative functions that are selected by J8. Status Function Contact = Open Contact = Short J9 = Open Presence Detector Connection No Limit Forced to STBY J9 = Short Power Shedding Function No Limit Limit NLOAD...
Page 65 CONTROL SYSTEM STBY Cool Heat Auto (Low (Med User User User User User (High setting setting setting setting setting IFAN IFAN IFAN IFAN IFAN (Turbo speed speed speed speed speed (Auto Backlight(red) Backlight(green) 12.4.11.3 Floor/Ceiling Model STANDBY Lights up when the Air Conditioner is connected to power and is ready for operation INDICATOR 1.
Page 66 CONTROL SYSTEM 12.5 Outdoor Unit Control 12.5.1 Run Mode Run mode is the default operation mode of the system. This is the standard operation mode that is active in ﬁeld application (at customer site). System can go from run mode to other operation modes through keyboard or serial ports. 12.5.2 Mode Setting Mode deﬁnes the ODU operation mode.
Page 67 CONTROL SYSTEM 12.5.3 Compressor Speed Control 12.5.3.1 Compressor Min On/Off time Compressor minimum OFF time is (MinOFFTime) 3 minutes except during Deicing protection. Compressor minimum ON time is (MinOnTime) 3 minutes, minimum ON time is ignored during protections, and when unit is turned to STBY. 12.5.3.2 Compressor Speed calculation During normal operation (excluding protections), the compressor speed is limited by the...
Page 68 CONTROL SYSTEM 12.5.4 EEV Control 12.5.4.1 Operation Range The EEV operation range is deﬁned according to the operation mode as following ODU Mode Normal operation IDU inactive Compressor off COOL 80 to 350 HEAT 70 to 400 60 to 140 12.5.4.2 Reaching target value rules For all cases except at EEV initialization procedure, each EEV can move no more than 20...
Page 69 CONTROL SYSTEM Basic EEV open loop WNG72 and 80 Mode COOL HEAT 12.5.4.6 Balance time During the ﬁrst 6 minutes after STBY the correction is not calculated. After that the correction value is updated every 30 seconds. 12.5.4.7 EEV corrections The corrections in cool mode will keep the compressor in the proper operation temperature and will balance between the indoor units by controlling CTT-OMT.
Page 70 CONTROL SYSTEM The actual OFAN speeds in heat mode are deﬁned according to the following table Outdoor air temperature (OAT) Freq 12.5.5.2 Behavior when there is a failure in OFAN Whenever OFAN fault occurs the compressor will be stopped immediately, except during deicing protection, then the OFAN will be enabled to be started for maximum 5 times.
Page 71 CONTROL SYSTEM 12.5.7 Base Heater Setting The base heater will be working only when RV is “ON” according to the following graph: Base Heater When OAT is faulty the base heater will be “ON” continuously in HEAT mode. 12.5.8 Thermodynamic Protections 12.5.8.1 Protection level deﬁnition Five protection levels are deﬁned:...
Page 72 CONTROL SYSTEM 12.5.8.3.2 Indoor Coil over Heating Protection ICT Trend Fast Fast Decreasing No Change Increasing Decreasing Increasing ICT > 55 53 < ICT ≤ 55 49 < ICT ≤ 53 47 < ICT ≤ 49 45 < ICT ≤ 47 Norm Norm 43 <...
Page 73 CONTROL SYSTEM OCT – Outdoor Coil Temperature OAT – Outdoor Air Temperature TLD – Time from Last Deicing DI – Deicing Interval (Time Interval between Two Deicing) DST – Deicing static threshold (Temperature) Deicing interval time when compressor is ﬁrst started in heat mode, is 10 minutes if OCT < -2, and is 40 minutes in other cases.
Page 74: Control System
CONTROL SYSTEM 12.5.10.1 3 Levels Logic (used in ﬂoor/ceiling models) Level L2&3 Water Level LEVEL4 LEVEL2&3 LEVEL1 Pump NLOAD BLINK OPER LED NORMAL 12.5.10.2 1 Level Logic (used in all models except for ﬂoor/ceiling models) Level Don’t care Normal Don’t care Overﬂow Overflow when Overflow when...
Page 75 CONTROL SYSTEM Technician Test Mode (Valid For Single Units by Connecting HMI Display only ) This test is aimed for the technicians to check the system under a preset compressor and outdoor fan values while the expansion valves will function according to the normal running mode.
Page 76: User Interface
CONTROL SYSTEM 12.7 User Interface . LEDs Indicators – single split only If any fault exists in the system, it will be shown according to tIf no fault exists in the system, no fault code will be displayed during normal operation mode, and the status led will be on while the compressor is enable.he following coding method.
Page 77 CONTROL SYSTEM 6. Thermistor faults are reported only when they are enabled. 7. When the outdoor unit is in fault (not protection), an in-fault signal is sent to the indoor. When all the outdoor unit faults are cleared, ‘no-fault’ signal is sent to the indoor. 12.8 Jumper settings 12.8.1...
Page 78 CONTROL SYSTEM Model selection Jumper – J7, J8 Model J9- Presence Detector/Power Shedding OPERATION Presence Detector Power Shedding Jumper – J10 OPERATION WNG DCI LCD 12.8.2 OFAN Jumpers OFAN use parameters Panasonic- EHD80 Nidec SIC-71FW-F170-1 Shinano EEPROM 12.8.3 Compressor Jumpers Compressor use parameters TNB220FLBM (ROM) EEPROM...
Page 79 CONTROL SYSTEM 12.9.2 Protection Parameters Deicer Parameters Parameter Default DSTF DIF (min) CTMR (min) TimeD (min) DIT (min) DTmin (min) DImin (min) DImax (min) DeicSPChRV EEVDeicerOpen DEICT1 (sec) DEICT2 (sec) DEICT3 (sec) OptimDeicSP 12.9.3 Compressor Parameters Compressor Parameters Value MinOFFTime MinOnTime MaxSpeedC MaxSpeedH...
Page 80 CONTROL SYSTEM 12.9.5.1.1 Parameters for defrost protection: ICTST Speed ICT to stop indoor fan ICTVLSpeed ICT to go down to very low speed ICTLSpeed ICT to start in very low speed ICTHSpeed ICT to start in increase speed from very low ICTTSpeed ICT to enable Turbo fan speed ICTDef1...
Page 81 TROUBLESHOOTING TROUBLESHOOTING WNG 50 60 DCI WARNING!!! When Power Up – the whole outdoor unit controller, including the wiring, is under HIGH VOLTAGE!!! Never open the Outdoor unit before turning off the Power!!! When turned off, the system is still charged (400V)!!! It takes about 4 Min.
Page 82 TROUBLESHOOTING SYMPTOM PROBABLE CAUSE CORRECTIVE ACTION Unit works in wrong Check RV power connections, if OK, mode (cool instead of Electronics or power Check RV operation with direct heat or heat instead of connection to RV 230VAC power supply, if OK, cool) Replace outdoor controller.
Page 83 TROUBLESHOOTING Judgment by Indoor/Outdoor Unit Diagnostics 13.3 Enter diagnostics mode - press for five seconds Mode/Reset button in any operation mode. Acknowledgment is by 3 short beeps and lights of all Display LED’s. Then, The units will enter into Indoor and Outdoor unit diagnostic modes.
Page 84 TROUBLESHOOTING 13.3.2 Indoor unit diagnosis and corrective actions Fault Probable Cause Corrective Action Check sensor connections or Sensor failures of all replace sensor types Indoor and Outdoor controllers are Replace Indoor controller Communication with different versions mismatch Communication or grounding wiring is Check Indoor to Outdoor wiring No Communication not good.
Page 85 TROUBLESHOOTING 13.3.4 Outdoor unit diagnosis and corrective actions Fault Probable Cause Corrective Action Sensors failures of all Check sensors connections types or replace sensors. Electronics HW Check all wiring and jumper IPM Fault problem settings, if OK, replace electronics. No action, unless special Bad EEPROM parameters are required for unit operation.
Page 86 TROUBLESHOOTING 13.5.2 Checking Power Input. If Indoor unit power LED is unlighted, power down the system and check the fuse of the Indoor unit. If the fuse is OK replace the Indoor unit controller. If the fuse has blown, replace the fuse and power up again. Checking Power Input procedure for the Outdoor unit is the same as with the Indoor unit.
Page 87 TROUBLESHOOTING TROUBLESHOOTING WNG 80 DCI WARNING!!! When Power Up – the whole outdoor unit controller, including the wiring, is under HIGH VOLTAGE!!! Never open the Outdoor unit before turning off the Power!!! When turned off, the system is still charged (400V)!!! It takes about 1 Min.
Page 88 TROUBLESHOOTING SYMPTOM PROBABLE CAUSE CORRECTIVE ACTION One indoor unit or more are operating in cool mode with no capacity, and the other units have The communication wires Check and correct the water leaks/freezing problems of the indoor units are communication wires One indoor or more are operating in switched connection...
Page 89 TROUBLESHOOTING 14.2 Checking the refrigeration system Checking system pressures and other thermodynamic measures should be done when system is in technician Mode where the system operates as in ﬁxed settings. The performance curves given in this manual are given for unit performance in Technician mode when high indoor fan speed is selected.
Page 90 TROUBLESHOOTING 3. Order of priority is 1-32. Diagnostics is continuously ON as long as power is on. 4. Heat Sink Over Heating Protection, Compressor Over Heating Protection, and System Over Power Protection are declared only whenever in ‘Stop-Compressor’ status. 5. All faults, except the thermistor faults, will remain at least 10 seconds. This rule comes to serve the monitoring utilities, in a case the fault is released quickly it will be still shown under the monitoring utilities.
Page 91 TROUBLESHOOTING Fault Name Fault Description Corrective Action Check if input voltage higher than limit (270VAC), if not and the problem presist, replace controller. If voltage DC over voltage DC voltage exceeds its high limit is high, shut off the power and recommend the customer to ﬁx the power supply Check if input voltage lower than limit...
Page 92 TROUBLESHOOTING 14.3.3 Fault Code for Indoor unit Pressing Mode button for long will activate diagnostic mode by the acknowledgment of 3 short beeps and lighting of COOL and HEAT LED’s. When Indoor diagnostics is displayed, all four LED’s (STBY, Operate, Filter, TMR) are on. Entering diagnostics in STBY mode allows only viewing of status (fault-display).
Page 93 TROUBLESHOOTING 14.3.4 Indoor unit diagnostics and corrective actions Fault Probable Cause Corrective Action Sensors not connected or Check sensor connections or Sensor failures damaged replace sensor Communication Indoor and Outdoor controllers Replace Indoor controller mismatch are with different versions Communication or grounding Check Indoor to Outdoor wiring No Communication wiring is not good...
Page 94 TROUBLESHOOTING 14.4.4 Checking the Outdoor Fan Motor Check FAN-Power and FAN-Halls connections - Repair if needed. Rotate the fan slowly by hand. If the fan does not rotate easily, check whether something is obstructing the fan, or if the fan itself is coming into contact with the outer case, preventing it from rotating.
Page 95 TROUBLESHOOTING 14.4.9 Checking the communication Change to Stand-by or Power OFF and re-start - If the fault is still “Active” check Indoor to Outdoor Communication wiring and grounding connections (should be less than 2.0Ω) – Repair if needed. If IDU failure – replace IDU controller that does not respond. If ODU failure –...
Page 96 TROUBLESHOOTING 14.5 Precaution, Advise and Notice Items 14.5.1 High voltage in Outdoor unit controller Whole controller, including the wires, connected to the Outdoor unit controller may have the potential hazard voltage when power is on. Touching the Outdoor unit controller may cause an electrical shock.
Page 97: Exploded Views And Spare Parts Lists
EXPLODED VIEWS AND SPARE PARTS LISTS EXPLODED VIEWS AND SPARE PARTS LISTS 15.1 Indoor Unit: Delta WNG 50 / WNG 60 DCI Revision Y05-02 15-1 Service Manual - WNG 50_60_80 DCI CONTENT...
Page 98 EXPLODED VIEWS AND SPARE PARTS LISTS 15.2 Intdoor Unit: WNG 50/60 DCI NO. Part No. Description Quantity 452917400 Grill A/WNG18 452952800 Grill B/WNG18 452952900 Grill C/WNG18 453080400 Display Board Assy.906-257-00 452919800 Filter 4518113 Fiber Filter Assy. (Optional) 453054000 Frame assy./WNG18 4526946 Display Lens Assy(LCD) 4527144...
Page 99 EXPLODED VIEWS AND SPARE PARTS LISTS 15.3 Outdoor Unit: ONG3-50 DCI Revision Y05-02 15-3 Service Manual - WNG 50_60_80 DCI CONTENT...
Page 100 EXPLODED VIEWS AND SPARE PARTS LISTS 15.4 Outdoor Unit: ONG3-50 DCI Part No. Description Unit 433218 Front panel A 4526340 Air inlet ring-420 433223 Painting insulation plate 4526476 Axial fan OD=401 4526475 DC motor for DCI 50 4526457 Motor support 4527363 Base painting Assy.
Page 101 EXPLODED VIEWS AND SPARE PARTS LISTS 15.5 Outdoor Unit: DCI 60 Revision Y05-02 15-5 Service Manual - WNG 50_60_80 DCI CONTENT...
Page 102 EXPLODED VIEWS AND SPARE PARTS LISTS 15.6 Outdoor Unit: DСI 60 NO. Part NO. DESCRITION Quantity 1 4517144 FAN COVER PP+UV 2 452795700 PAINTED LEFT CABINET ASSY 3 4521642 Painted Right Cabinet and Isolation Assy. 4 4523141 M10 Hexagon locked nut M10 5 4526841 cusion for fan 6 4526510...
Page 103 EXPLODED VIEWS AND SPARE PARTS LISTS 15.7 Indoor Unit: WNG 80 DCI Revision Y05-02 15-7 Service Manual - WNG 50_60_80 DCI CONTENT...
Page 104 EXPLODED VIEWS AND SPARE PARTS LISTS 15.7 Indoor Unit: WNG 80 DCI Part No. Name Quan. Version 4525902 GRILLE ASSY FILTER 4523299 4523303 SHAFT LOCKER 4518113 AIR FILTER ASSY 4525610 FRAME ASSY 4523301 SCREW COVER 4523302 FIX LOCKER 462350007 EVAPORATOR ASSY WNG80 R410A 4525112 DISPLAY ASSY.
Page 105 EXPLODED VIEWS AND SPARE PARTS LISTS 15.7 Outdoor Unit: DCI 80 Revision Y05-02 15-9 Service Manual - WNG 50_60_80 DCI CONTENT...
Page 106 EXPLODED VIEWS AND SPARE PARTS LISTS 15.10 Outdoor Unit: DCI 80 Part No. Description 465100000 Outlet grid 4523652 PAINTED LEFT CABINET ASSY 4523758 Nut M8 left 452960400 OUTDOOR FAN 461600002 4-Way Valve Assy. 452956700 4-way valve coil 4526522 Four-Way Valve R410A 452855600 DC Resin Motor(EHD80A90EC/SIC-71FW-F170-1) 4522601...
Page 107 APPENDIX A APPENDIX A INSTALLATION AND OPERATION MANUAL ► INSTALLATION & OPERATING MANUAL WNG 50/60 DCI ► INSTALLATION & OPERATING MANUAL WNG 80 DCI Revision Y05-02 16-1 Service Manual - WNG 50_60_80 DCI CONTENT...
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Page 154 1. ACCESSORIES SUPPLIED WITH THE AIR CONDITIONER 2. LOCATION OF INDOOR AND OUTDOOR UNIT 3. INSTALLATION/SERVICE TOOLS (ONLY FOR R410A PRODUCT) 4. INSTALLATION OF THE INDOOR UNIT 5. CONDENSATE HOSE CONNECTION 6. ELECTRICAL CONNECTION BETWEEN INDOOR AND OUTDOOR UNIT 7. REFRIGERANT TUBING 8.
Page 155 I N S T A L L A T I O N I N S T R U C T I O N S FOR DCI SPLIT WALL MOUNTED AIR CONDITIONER ACCESSORIES SUPPLIED WITH LOCATION OF INDOOR AND THE AIR CONDITIONER OUTDOOR UNIT Select the location considering the following: Shape...
Page 156 950mm 1800mm 80 mm Fig. 3 50 mm 50 mm 2300 mm To remove 100 mm 100 mm 400 mm To attach Fig. 4 500 mm 100 mm NOTE: Distance between indoor and outdoor units should be 30m. Height difference between indoor and Fig.
Page 157 INSTALLATION/SERVICE TOOLS (ONLY FOR R410A PRODUCT) CAUTION New Refrigerant Air Conditioner Installation THIS AIR CONDITIONER ADOPTS THE NEW HFC REFRIGERANT (R410A) WHICH DOES NOT DESTROY OZONE LAYER. R410A refrigerant is apt to be affected by impurities such as water, oxidizing membrane, and oils because the working pressure of R410A refrigerant is approx.
Page 158 INSTALLATION OF THE INDOOR UNIT INSTALLATION OF THE MOUNTING PLATE 1. Figure 9 shows the location of the mounting plate relative to the unit size. Refer to one of the drawings, according to your unit length (marked in square). REMOVAL AND INSTALLATION OF THE 2.
Page 159 CONDENSATE HOSE SUSPENDING AND RELEASING THE UNIT FROM THE CONNECTION MOUNTING PLATE 1. Make sure that the refrigerant tubes, electric cables and 1. Attach the condensate drain hose to the corrugated hose condensate water hose are well insulated with closed in the rear groove of the indoor unit.
Page 160 ELECTRICAL CONNECTION BETWEEN INDOOR AND OUTDOOR UNIT Power input cable ELECTRICAL REQUIREMENTS Electrical wiring and connections should be made by qualified electricians and in accordance with local electrical codes and regulation. The air conditioner units must be grounded. The air conditioner unit must be connected to an adequate power outlet from a separate branch circuit protected by a time delay circuit breaker, as Fig.
Page 161 Tightening TUBE SIZE TORQUE REFRIGERANT TUBING torques of unions Liquid line 3/8" 30-35 N.M. and valve caps: Suction line 1/2" 50-54 N.M. Suction line 5/8" 75-78 N.M. CONNECT THE INDOOR TO THE OUTDOOR UNIT Suction line 3/4" 80-100 N.M. The indoor unit contains a small quantity of nitrogen. Do not unscrew the nuts from the unit until you are ready to Fig.
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