Delta DCI Series Indoor Units Outdoor Units Delta 25 DCR 25 Z Delta 35 DCR 35 Z REFRIGERANT REFRIGERANT REFRIGERANT R410A HEAT PUMP NOVEMBER – 2008 SM DELTAZ 1-E.0 GB CONTENTS...
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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.
General The new Delta DC Inverter split wall mounted series comprise RC (heat pump) models, as follows: ● Delta 25 ● Delta 35 The indoor Delta units are available as LED display types only, featuring esthetic design, compact dimensions, and low noise operation.
INTRODUCTION Indoor Unit The indoor unit is wall mounted, and can be easily fitted to many types of residential and commercials applications. It includes: ● Casing with air inlet and outlet grills. ● A large-diameter tangential fan. ● Bended coil with treated aluminum fins. ●...
Inbox Documentation Each unit is supplied with its own installation and operation manuals, one simly remote control manual. Matching Table INDOOR UNITS OUTDOOR UNITS MODEL REFR” Delta 25 Delta 35 √ DCR 25Z R410A √ DCR 35Z R410A SM DELTAZ 1-E.0 GB...
PRODUCT DATA SHEET PRODUCT DATA SHEET Delta 25 / DCR 25Z R410A Model Indoor Unit DELTA 25 DCI Model Outdoor Unit DCR 25 Z R410A Installation Method of Pipe Flared Characteristics Units Cooling Heating Btu/hr 8530(4090-10240) 8530(3410-10910) Capacity 2.5(1.2-3.0) 2.5(1.0-3.2) 0.78...
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PRODUCT DATA SHEET Delta 35 / DCR 35 Z R410A Model Indoor Unit DELTA 35 DCI Model Outdoor Unit DCR 35 Z R410A Installation Method of Pipe Flared Characteristics Units Cooling Heating Btu/hr 11940(4100-13640) 11940(4100-13330) Capacity 3.5(1.2-4.0) 3.5(1.2-3.9) 1.09 0.97 Power input 3.21 3.61...
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...
PERFORMANCE DATA & PRESSURE CURVES PERFORMANCE DATA Delta 25 / DCR 25 Z R410A 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...
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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 [ 1.78 1.66 1.53 -15/-16 0.49 0.54 0.59 1.98 1.86...
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PERFORMANCE DATA & PRESSURE CURVES Delta 35 / DCR 35 Z R410A 5.2.1 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 32/23...
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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 2.29 2.13 1.97 -15/-16 0.63 0.69 0.76 2.55 2.39 2.23...
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PERFORMANCE DATA & PRESSURE CURVES PRESSURE CURVES 5.4.1 DELTA 25 / DCR 25 Z R410A 5.4.1.1 Cooling => Test Mode Suction Pressure VS.Outdoor Temp. 1200 1100 1000 21/15 DB/WB 24/17 DB/WB 27/19 DB/WB 29/21 DB/WB 32/23 DB/WB Outdoor DB Temperature Discharge Pressure VS.
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PERFORMANCE DATA & PRESSURE CURVES 5.4.1.2 Heating => Test Mode Suction Pressure VS. Outdoor Temp. 1000 15 DB 20 DB 25 DB Outdoor WB Temperature Discharge Pressure VS. Outdoor Temp. 3350 3100 2850 2600 2350 15 DB 2100 20 DB 25 DB 1850 1600...
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PERFORMANCE DATA & PRESSURE CURVES 5.4.2 DELTA 35 / DCR 35 Z R410A 5.4.2.1 Cooling => Test Mode Suction Pressure VS. Outdoor Temp. 1200 1100 1000 21/15 DB/WB 24/17 DB/WB 27/19 DB/WB 29/21 DB/WB 32/23 DB/WB Outdoor DB Temperature Discharge Pressur e VS. Outdoor Temp. 4000 3750 3500...
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PERFORMANCE DATA & PRESSURE CURVES 5.4.2.2 Heating =>Test Mode Suction Pressure VS. Outdoor Temp. 1000 15 DB 20 DB 25 DB Outdoor WB Temperature Discharge Pressure VS. Outdoor Temp. 4000 3750 3500 3250 3000 2750 2500 15 DB 2250 20 DB 2000 25 DB 1750...
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) Delta 25 Delta 35 FAN SPEED LINE SM DELTAZ 1-E.0 GB CONTENTS...
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SOUND LEVEL CHARACTERISTICS Outdoor units Microphone Distance from Unit Sound Pressure Level Spectrum (Measured as Figure 5) DCR 25 Z Cooling DCR 25 Z Heating DCR 35 Z Cooling DCR 35 Z Heating SM DELTAZ 1-E.0 GB CONTENTS...
ELECTRICAL DATA ELECTRICAL DATA Single Phase Units MODEL Delta 25 Delta 35 To indoor To indoor Power Supply 1PH,220-240V,50Hz 1PH,220-240V,50Hz Max Current, A Circuit Breaker,A Power Supply Wiring No. X 3x1.0 mm 3x1.5 mm Cross Section, mm nterconnecting Cable RC 4x1.0 mm...
CONTROL SYSTEM CONTROL SYSTEM 11.1 Electronic Control 11.1.1 General Functions and Operating Rules 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.
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CONTROL SYSTEM 11.1.3.3 Frequency Changes Control Frequency change rate is 1 Hz/sec. 11.1.3.4 Compressor Starting Control Frequency Step 3 Step 2 Step 1 Minute Time Minute Min 10 Minutes 11.1.3.5 Minimum On and Off Time 3 minutes. 11.1.4 Indoor Fan Control 10 Indoor fan speeds are determined for each model.
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CONTROL SYSTEM Speed Controlled by High Relay Triac (40% to 95% effective voltage) 11.1.6.2 OFAN Operation in Cooling Mode With keeping the OFAN general rules above in the highest priority, the operation of the OFAN will be operating as the following: Time After Compressor start up (minutes) Initial 0 –...
CONTROL SYSTEM 11.1.8 Reversing Valve (RV) Control Reversing valve is on in heat mode. Switching of RV state is done only after compressor is off for over 3 minutes. 11.2 Fan Mode In high/ medium/ low indoor fan user setting, unit will operate fan in selected speed. In AutoFan user setting, fan speed will be adjusted automatically according to the difference between actual room temperature and user set point temperature.
CONTROL SYSTEM 11.6 Dry Mode As long as room temperature is higher then the set point, indoor fan will work in low speed and compressor will work between 0 and MaxNLOADIF1C Hz. When the room temperature is lower than the set point, compressor will be switched OFF and indoor fan will cycle 3 minutes OFF, 1 minute ON.
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CONTROL SYSTEM 11.7.3 Compressor over Heating Protection Compressor temperature can be in one of 5 control zones (4 in protection, and 1 normal), according to the following chart. Stop-Compresor CTTOH4 CTTOH3 CTTOH2 CTTOH1 Normal Compressor Temperature Control Status Else Increases Norm Stop Compressor 11.7.4...
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CONTROL SYSTEM 11.7.5 Heat Sink Over Heating Protection A new control status will be set according to the following graph every one-minute or whenever when going up by the rows. is the current reading of HST and HST is the last reading of HST. -HST <-1 >1...
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CONTROL SYSTEM 11.7.6.2 Deicing Protection Procedure Threshold COMP max. 12 minutes HEAT COOL OFAN EEVDeicerOpen T1 = DEICT1, T2 = DEICT2, T3 = DEICT3 11.7.7 Condensate Water Over Flow Protection Each of the pins P1, P2, P3 can have two options: 1 –...
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CONTROL SYSTEM Water Level LEVEL4 LEVEL2&3 LEVEL1 Pump NLOAD BLINK OPER LED NORMAL 11.7.7.2 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 unit is ON unit is OFF Overflow Water Level Normal...
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CONTROL SYSTEM 11.8 Indoor Unit Dry Contact Indoor unit Dry contact has two alternative functions that are selected by J8. Function Contact = Open Contact = Short J8 = Open Presence Detector Connection No Limit Forced to STBY J8 = Short Power Shedding Function No Limit Limit NLOAD...
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CONTROL SYSTEM 1. Lights up when the Air Conditioner is connected to power and the mode is STBY. STAND BY 2. Blinks for 3 seconds, when the system is switched to Heat Mode INDICATOR by using the Mode/Reset Switch on the unit (the operation indicator will be off during this blinking time).
CONTROL SYSTEM 11.10.2 Outdoor Unit Controller Indicators Unit has three LED’s. SB LED, STATUS LED, FAULT LED. SB LED is ON when power is ON (230 VAC), STATUS LED is ON when COMP is ON, and Blinks according to diagnostics mode definitions when either fault or protection occurs.
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CONTROL SYSTEM 11.11.2 Outdoor Unit Controller 11.11.2.1 Hardware Jumpers JP9 JUMPER LAYOUT EEPROM Data (PIN 9) ODU3 (PIN 7) ODU2 (PIN 5) ODU1 (PIN 3) ODU0 (PIN 1) (PIN 10) GND (PIN 8) (PIN 6) (PIN 4) (PIN 2) ODU MODEL SELECTION ODU3 ODU2 ODU1...
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CONTROL SYSTEM 11.12 Test Mode 11.12.1 Entering Test Mode 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...
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CONTROL SYSTEM 11.13.1.2 Model Depended Parameters: Models Parameter name NLOAD limits as a function of selected indoor fan speed MaxNLOADIF1C MaxNLOADIF2C MaxNLOADIF3C MaxNLOADIF4C MaxNLOADIF5C Indoor Fan speeds IFVLOWC IFLOWC IFMEDC 1050 1000 IFHIGHC 1200 1200 IFTURBOC 1300 1300 IFVLOWH IFLOWH IFMEDH 1050 1100...
TROUBLESHOOTING TROUBLESHOOTING 12.1 ELECTRICAL & CONTROL TROUBLESHOOTING 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.
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TROUBLESHOOTING SYMPTOM PROBABLE CAUSE CORRECTIVE ACTION Compressor is over heated and unit does not generate EEV problem Check EEV capacity Units goes into protections Control problem or Perform diagnostics (See 13.1.3 below), and and compressor is stopped refrigeration system follow the actions described. with no clear reason problem Compressor motor is...
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TROUBLESHOOTING 12.1.3.1 Indoor unit Diagnostics Problem RT-1 is disconnected RT-1 is shorted RT-2 is disconnected RT-2 is shorted Reserved Communication mismatch No Communication No Encoder Reserved Outdoor Unit Fault … Reserved Defrost protection Deicing Protection Outdoor Unit Protection Indoor Coil HP Protection Reserved Reserved EEPROM Not Updated...
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TROUBLESHOOTING 13.1.3.3 Outdoor unit Diagnostics DCR 22 / 25 / 35 diagnostics Problem OCT shorted/disconnected CTT shorted/disconnected HST shorted/disconnected OAT shorted/disconnected OMT shorted/disconnected … Reserved IPM Fault Reserved DC under voltage Reserved Zero Crossing detection fault Mismatch between IDU & ODU models No Communication …...
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TROUBLESHOOTING Use MegaTool according to following procedure: Setup MegaTool software: copy the software to the computer. Connect RS232C port in computer with MegaTool port in Indoor/Outdoor unit controller by the connection wire. Run the software and choose the COM port, you can monitor the A/C system state in monitor tab.
EXPLODED VIEWS AND SPARE PARTS LISTS 13.2 Indoor Unit: Delta 25 DCI Part No. Description Quan. 453037000 Grill A / DELTA 22,25 453100500 Grill L axis 453100600 Grill R axis 453036500 Filter for DELTA 7/9 465720000 Silk-screen front frame for Electra...
Grill A / DELTA 12 453100500 Grill L axis 453100600 Grill R axis 453082900 Filter for DELTA 12 465720001 Silk-screen front frame for Electra 4525987 SCREW COVER 453058201 Evap. System Assy./DELTA 35 4523526 BERAING ASSY FAN 4527111 FAN ASSY PLASTIC 452784401 IOD-12 Air Outlet Assy.
EXPLODED VIEWS AND SPARE PARTS LISTS 13.4 Outdoor Unit: DСR 25 Z, DCR 35 Z R410A DCI 13-4 SM DELTAZ 1-E.0 GB CONTENTS...
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EXPLODED VIEWS AND SPARE PARTS LISTS 13.5 Outdoor Unit: DСR 25 Z DCI Part No. Description Quan. 4522551 Grille A of GCN 4523441 Front panel A Painting assy 4519251 Axial Fan OD=400 467400040 Sensor/OAT & OMT 467400200 Compressor top thermistor(CTT) 467400023 Outdoor coil thermistor(OCT) 460000032R...
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EXPLODED VIEWS AND SPARE PARTS LISTS 13.6 Outdoor Unit: DСR 35 Z DCI Part No. Description Quan. 4522551 Grille A of GCN 4523441 Front panel A Painting assy 4519251 Axial Fan OD=400 467400040 Sensor/OAT & OMT 467400200 Compressor top thermistor(CTT) 467400023 Outdoor coil thermistor(OCT) 460000033R...