Electra WNG 25 DCI INV User manual

Service Manual
WNG LED/LCD DCI Inverter series
REFRIGERANT
R410A
HEAT PUMP
DECEMBER 2004
Indoor Units Outdoor Units
WNG 25 DCI INV ONG 25 DCI INV
WNG 35 DCI INV ONG 35 DCI INV

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i
TABLE OF CONTENTS
Revision Y05-01Service Manual - WNG DCI
Table of Contents
1. INTRODUCTION ...................................................................................................1-1
2. PRODUCT DATA SHEET......................................................................................2-1
3. RATING CONDITIONS..........................................................................................3-1
4. OUTLINE DIMENSIONS .......................................................................................4-1
5. PERFORMANCE DATA .......................................................................................5-1
6. PRESSURE CURVES ...........................................................................................6-1
7. ELECTRICAL DATA..............................................................................................7-1
8. WIRING DIAGRAMS .............................................................................................8-1
9. REFRIGERATION DIAGRAMS.............................................................................9-1
10. TUBING CONNECTIONS......................................................................................10-1
11. CONTROL SYSTEM .............................................................................................11-1
12. TROUBLESHOOTING ..........................................................................................12-1
13. EXPLODED VIEWS AND SPARE PARTS LISTS.................................................13-1
14. APPENDIX A


INTRODUCTION
Service Manual – WNG DCI Revision 0 1-1
1. INTRODUCTION
1.1 General
The new WNG DCI INVERTERS split wall mounted range comprise the following RC
(heat pump) models:
xWNG 25 DCI INV
xWNG 35 DCI INV
The indoor WNG units are available as LED or LCD display types, featuring esthetic
design, compact dimensions, and low noise operation.
1.2 Main Features
The WNG DCI INV series benefits from the most advanced technological innovations,
namely:
xDC Inverter technolegy
xR410a
xHigh COP (level A)
xLego Concept
xPre-Charged units up to the max’ alowing tubing distance
xNetworking system connectivity
xA dry contact for presence detector or power shedding functions (configurable)
xBase heater connection
xCooling operation at outdoor temperature down to -10ºC
xHeating operation at outdoor temperature down to -15ºC
xSupports Indoor Air Quality features, such as – Ionizer, Active Electro-Static
Filter.
xIndoor large diameter cross flow fan, allowing low noise level operation.
xBended indoor coil with treated aluminum fins and coating for improved
efficiency.
xEasy access to the interconnecting tubing and wiring connections, so that
removing the front grill or casing is not necessary.
xRefrigerant pipes can be connected to the indoor unit from 6 different optional
directions. .
xWater condensate tray is equipped with two optional drain connections.
xAutomatic treated air sweep.
xLow indoor and outdoor noise levels.
xEasy installation and service.
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INTRODUCTION
1-2 Revision 0 Service Manual – WNG DCI
1.3 Indoor Unit
The indoor unit is wall mounted, and can be easily fitted to many types of residential
and commercials applications.
xWNG 25, 35
oNew design is available in LCD and LED versions.
oOld design is available in LED version only.
Indoor Unit Features:
Features WNG 25,35
Display LCD or LED
Ionizer YES
ESF YES
Fresh Air NO
Indoor Fan Motor Variable Speed (PG)
Horizontal Motorized
Louver YES
Vertical Motorized Louver NO
Heating Element NO
M2L Cable Port YES
Dry Contact
Presence Detector
or (jumper selected)
Power Shedding
1.4 Filtration
The WNG DCI INV series presents several types of air filters:
xEasily accessible, and re-usable pre-filters (mesh)
xPre-charged electrostatic filter (disposable)
xActive carbon filter (disposable)
xESF. Active Electro Static re-usable filter (optional)
1.5 Ionizer (Optional)
A special design Ionizer protected by unique patents integrated into the indoor unit,
generating negative ions to the room providing comfort and upgraded indoor air quality.
1.6 Control
The microprocessor indoor and outdoor controllers, and an infrared remote control,
supplied as standard, provide complete operating function and programming.
Remote controlers: RC-2/3/4/5/7, RCW, µBMS
Networking system AircoNet version 4.2 and up, MIU SW version H8 and up
For further details please refer to the Operation Manual, Appendix A.
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INTRODUCTION
Service Manual – WNG DCI Revision 0 1-3
1.7 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.
xONG 25 DCI
xONG 35 DCI
Outdoor Unit Features:
Features ONG 25,35, DCI
Display 3 LED’s
Base Heater Optional
Outdoor Fan Variable Speed DC Inverter
M2L cable Port No
1.8 Tubing Connections
Flare type interconnecting tubing to be produced on site.
For further details please refer to the Installation Manual, Chapter 9.
1.9 Accessories
Item Description
MIU (WNG) MODBUS Interface Unit
MIU (K) MODBUS Interface Unit
RS485 Adapter
To be used as an interface
with RCW or µBMS remote
controllers (required for
WNG units only)
Base heater
M2L cable
For further details please refer to Optional Accessories, Chapter 17.
1.10 Inbox Documentation
Each unit is supplied with its own installation and operation manuals.
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INTRODUCTION
1-4 Revision 0 Service Manual – WNG DCI
1.11 Matching Table
1.11.1 R410A
INDOOR UNITS
OUTDOOR UNITS
MODEL REFRIGERENT
WNG25 DCI WNG35 DCI K25 DCI K35 DCI
ONG 25 DCI R410A ¥ ¥
ONG 35 DCI R410A ¥¥
The above table lists outdoor units and WNG indoor units which can be matched together. In
addition the listed outdoor units can be matched with other types of indoor units such as
cassettes,
For further information please refer to the relevant Service Manual.
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PRODUCT DATA SHEET
Service Manual – WNG DCI Revision 0 2-1
2. PRODUCT DATA SHEET
2.1 WNG 25 DCI
(1) Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units).
(2) Airflow in ducted units; at nominal external static pressure.
(3) Sound power in ducted units is measured at air discharge.
(4) Sound pressure level measured at 1 meter distance from unit.
Item Model WNG-25 DCI / ONG3-25 DCI
Cooling Heating
Capacity Btu/hr 8530᧤4780-12280᧥11600᧤5120-17060᧥
Kcal/hr 2150(1200-3100) 2920(1290-4300)
W2500᧤1400-3600᧥3400᧤1500-5000᧥
Total Input (Cooling / Heating) W595᧤420-1000᧥810᧤390-1600᧥
W/W 4.2 4.2
Running Current(Cooling/Heating) A2.7 3.8
Starting Current A
Power Supply (ph, cy, voltage)
L/h
External finish
Ionizer
Electrostatic Filter dB(A)
Heat exchanger
Fan (drive) Crossflow * 1
Fan motor output W
Airflow (Hi-Me-Lo) m3/hr 530-430-330 570-460-350
Operation control type
Pressure 26-38 26-39
Power 39-50 39-51
Condensate drain I.D. mm(in) 16(5/8)
Dimensions W*D*H
Weight kg
Packing dimensions W*D*H mm
Unit stacking units 7
Refrigerant control Electronic Expansion Valve
Compressor type Single Rotary DC Inverter
Compressor Model
Starter type ---
Protection device Outdoor SW control
Heat exchanger Hydrophilic louver fin
Fan (drive)* No. Propeller * 1
Motor output W
Airflow m3/h
Defrost method Reverse cycle
Pressure 50 51
Power 60 61
Dimensions W*D*H mm
Weight kg.
Packing dimensions W*D*H mm.
Unit stacking units 3
Refrigerant R410A
Charge(20m connection tube) g
Tube size liquid mm(in)
O.D. suction mm(in)
Connection method indoor & outdoor Flared
between the indoor height difference m Max. 10m
and outdoor unit tubing length m Max. 20m
E.E.R(Cooling) / C.O.P(Heating)
10.50
single phase᧨50HZ᧨220-240V
R410A WNG/ONG3SPLIT DC INVERTER
Dehumidification 1.0
INDOOR UNIT
High Polish
Yes(Optional)
Yes(Optional)
Hydrophilic louver fin coil
20
Remote control
Noise level(Lo-Hi) dB(A)
810*202*285
11
885*285*360
OUTDOOR UNIT
Panasonic 5RS102XAB
40
1780
Noise level dB(A)
795*290*610
40
945*395*655
TUBING
1100
Fresh Air No
6.35
9.53
additonal charge No need
Pressure (4)
Pressure (4)
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PRODUCT DATA SHEET
2-2 Revision 0 Service Manual – WNG DCI
2.2 WNG 35 DCI
(1) Rating conditions in accordance with ISO 5151 and ISO 13253 (for ducted units).
(2) Airflow in ducted units; at nominal external static pressure.
(3) Sound power in ducted units is measured at air discharge.
(4) Sound pressure level measured at 1 meter distance from unit.
Item Model WNG-35 DCI / ONG3-35 DCI
Cooling Heating
Capacity Btu/hr 11940᧤4780-14670᧥14670(5100-19790᧥
Kcal/hr 3010(1200-3700) 3700(1290-4990)
W3500᧤1400-4300᧥4300᧤1500-5800᧥
Total Input (Cooling / Heating) W990᧤420-1250᧥1125᧤390-1750᧥
W/W 3.54 3.82
Running Current(Cooling/Heating) A4.6 5.2
Starting Current A
Power Supply (ph, cy, voltage)
L/h
External finish
Ionizer
Electrostatic Filter
Heat exchanger
Fan (drive) Crossflow * 1
Fan motor output W
Airflow (Hi-Me-Lo) m3/hr 550-450-350 580-480-370
Operation control type
Pressure 26-39 26-40
Power 39-52 39-52
Condensate drain I.D. mm(in) 16(5/8)
Dimensions W*D*H
Weight kg
Packing dimensions W*D*H mm
Unit stacking units 7
Refrigerant control Electronical Expansion Valve
Compressor type Single Rotary DC Inverter
Compressor Model
Starter type ---
Protection device Outdoor SW control
Heat exchanger Hydrophilic louver fin
Fan (drive)* No. Propeller * 1
Motor output W
Airflow m3/h
Defrost method Reverse cycle
Pressure 5252
Power 6262
Dimensions W*D*H mm
Weight kg.
Packing dimensions W*D*H mm.
Unit stacking units 3
Refrigerant R410A
Charge(20m connection tube) g
Tube size liquid mm(in)
O.D. suction mm(in)
Connection method indoor & outdoor Flared
between the indoor height difference m Max. 10m
and outdoor unit tubing length m Max. 20m
E.E.R(Cooling) / C.O.P(Heating)
10.50
single phase᧨50HZ᧨220-240V
R410A WNG/ONG3SPLIT DC INVERTER
Dehumidification 1.5
INDOOR UNIT
High Polish
Yes(Optional)
Yes(Optional)
Hydrophilic louver fin coil
20
Remote control
Noise level(Lo-Hi) dB(A)
810*202*285
11
885*285*360
OUTDOOR UNIT
Panasonic 5RS102XAB
40
1780
Noise level dB(A)
795*290*610
40
945*395*655
TUBING
1200
Fresh Air No
6.35
9.53
No needadditonal charge
Pressure (4)
Pressure (4)
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RATING CONDITIONS
Service Manual – WNG DCI Revision 0 3-1
5HYLVLRQ<
3. RATING CONDITIONS
Standard conditions in accordance with ISO 5151, ISO 13253 (for ducted units)
and EN 14511.
Cooling:
Indoor: 27oC DB 19oC WB
Outdoor: 35 oC DB
Heating:
Indoor: 20oC DB
Outdoor: 7oC DB 6oC WB
3.1 Operating Limits
Indoor Outdoor
Cooling Upper limit 32oC DB 23oC WB 46oC DB
Lower limit 21oC DB 15oC WB -10oC DB
Heating Upper limit 27oC DB 24oC DB 18oC WB
Lower limit 10oC DB -15oC DB -16oC WB
Voltage 1PH 198 – 264 V
3PH N/A

OUTLINE DIMENTIONS
Service Manual – WNG DCI Revision 0 4-1
4. OUTLINE DIMENSIONS
4.1 WNG 25/35 DCI
Indoor Unit
4.2 ONG3 25/35 DCI
Outdoor Unit
AIR OUTLET
AIR INTAKE
AIR INTAKE
TUBING WALL OPENING
)FOR REAR ROUTING(
TUBING WALL OPENING
)FOR REAR LEFT ROUTING(
MOUNTING TEMPLATE
TO BE USED FOR LOCATION
OF INDOOR UNIT ON THE WALL
MOUTING PLATE OUTLINE
INDOOR UNIT OUTLINE
CEELING
70.0
100.5
285.0
42.0
100.5
285
190 810
70.0
93.0 93.0
42.0
810.0
167.5
18.5
30.0 167.5
8.0
83.0
100.0MIN
8.0
83.0
AIR INTAKE
AIR OUTLET
795
74
610
290
500
293
40
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PERFORMANCE DATA
Service Manual – WNG DCI Revision 0 5-1
5. PERFORMANCE DATA
5.1 WNG 25 DCI
5.1.1 Cooling Capacity (kW) - Run Mode
ID COIL ENTERING AIR DB/WB TEMPERATURE [ºC]
OD COIL
ENTERING AIR DB
TEMPERATURE
[C0]
DATA 22/15 24/17 27/19 29/21 32/23
TC 80 - 110 % of nominal
SC 80 - 105 % of nominal
-10 - 20
(protection range)
PI 25 - 50 % of nominal
TC 2.42 2.57 2.73 2.89 3.05
SC 1.64 1.67 1.71 1.74 1.77
25
PI 0.47 0.48 0.49 0.49 0.50
TC 2.30 2.46 2.62 2.77 2.93
SC 1.60 1.63 1.67 1.70 1.73
30
PI 0.52 0.53 0.54 0.55 0.56
TC 2.18 2.34 2.50 2.66 2.82
SC 1.56 1.59 1.63 1.66 1.69
35
PI 0.58 0.59
0.60 0.60 0.61
TC 2.07 2.23 2.38 2.54 2.70
SC 1.52 1.55 1.58 1.62 1.65
40
PI 0.63 0.64 0.65 0.66 0.67
TC 1.93 2.09 2.24 2.40 2.56
SC 1.47 1.50 1.53 1.57 1.60
46
PI 0.70 0.71 0.72 0.72 0.73
LEGEND
TC – Total Cooling Capacity, kW
SC – Sensible Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (oC)
DB – Dry Bulb Temp., (oC)
ID – Indoor
OU - Outdoor
5.1.2 Capacity Correction Factors
0.5
0.6
0.7
0.8
0.9
1
1.1
1.2
20 25 30 35 40 45
Outdoor Temperature [deg C]
Capacity Ratio
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PERFORMANCE DATA
5-2 Revision 0 Service Manual – WNG DCI
5.1.3 Heating Capacity (kW) - Run Mode
ID COIL ENTERING AIR DB TEMPERATURE [ºC]
OD COIL
ENTERING AIR
DB/WB
TEMPERATURE
[ºC]
DATA 15 20 25
TC 2.16 2.01 1.86
-15/-16 PI 0.49 0.54 0.58
TC 2.41 2.26 2.11
-10/-12 PI 0.59 0.64 0.68
TC 2.59 2.44 2.29
-7/-8 PI 0.66 0.71 0.76
TC 2.68 2.53 2.38
-1/-2 PI 0.70 0.75 0.80
TC 2.75 2.59 2.44
2/1 PI 0.72 0.77 0.82
TC 3.55 3.40 3.25
7/6
PI 0.76 0.81 0.86
TC 3.75 3.60 3.44
10/9 PI 0.81 0.86 0.90
TC 3.94 3.79 3.64
15/12 PI 0.85 0.90 0.95
15-24 TC 85 - 105 % of nominal
(Protection Range) PI 80 - 120 % of nominal
LEGEND
TH – Total Heating Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (oC)
DB – Dry Bulb Temp., (oC)
ID – Indoor
OU - Outdoor
5.1.4 Capacity Correction Factors
0.5
0.6
0.7
0.8
0.9
1
1.1
1.2
-15 -10 -5 0 5 10 15
Outdoor WB Temperature [deg C]
Capacity Ratio
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PERFORMANCE DATA
Service Manual – WNG DCI 5-3
5.2 Capacity Correction Factor Due to Tubing Length
5.2.1 Cooling
0.91
0.92
0.93
0.94
0.95
0.96
0.97
0.98
0.99
1.00
1.01
3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Tubing Length [m]
Capacity Ratio
5.2.2 Heating
0.90
0.92
0.94
0.96
0.98
1.00
1.02
3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Tubing Length [m]
Capacity Ratio
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PERFORMANCE DATA
5-4 Revision 0 Service Manual – WNG DCI
5.3 WNG 35 DCI
5.3.1 Cooling Capacity (kW) - Run Mode
ID COIL ENTERING AIR DB/WB TEMPERATURE [ºC]
OD COIL
ENTERING AIR DB
TEMPERATURE
[ºC]
DATA 22/15 24/17 27/19 29/21 32/23
TC 80 - 110 % of nominal
SC 80 - 105 % of nominal
-10 - 20
(protection range)
PI 25 - 50 % of nominal
TC 3.38 3.60 3.83 4.05 4.27
SC 2.40 2.45 2.50 2.55 2.60
25
PI 0.78 0.79 0.81 0.82 0.84
TC 3.22 3.44 3.66 3.88 4.11
SC 2.34 2.39 2.44 2.49 2.54
30
PI 0.87 0.88 0.90 0.91 0.93
TC 3.06 3.28 3.50 3.72 3.94
SC 2.28 2.33 2.38 2.43 2.48
35
PI 0.96 0.98
0.99 1.00 1.02
TC 2.89 3.12 3.34 3.56 3.78
SC 2.22 2.27 2.32 2.37 2.42
40
PI 1.05 1.07 1.08 1.10 1.11
TC 2.70 2.92 3.14 3.36 3.58
SC 2.15 2.20 2.25 2.30 2.34
46
PI 1.16 1.18 1.19 1.21 1.22
LEGEND
TC – Total Cooling Capacity, kW
SC – Sensible Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (oC)
DB – Dry Bulb Temp., (oC)
ID – Indoor
OU - Outdoor
5.3.2 Capacity Correction Factors
0.5
0.6
0.7
0.8
0.9
1
1.1
1.2
20 25 30 35 40 45
Outdoor Temperature [deg C]
Capacity Ratio
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PERFORMANCE DATA
Service Manual – WNG DCI 5-5
5.3.3 Heating Capacity (kW) - Run Mode
ID COIL ENTERING AIR DB TEMPERATURE [ºC]
OD COIL
ENTERING AIR
DB/WB
TEMPERATURE
[ºC]
DATA 15 20 25
TC 2.74 2.55 2.35
-15/-16 PI 0.68 0.74 0.81
TC 3.05 2.86 2.66
-10/-12 PI 0.81 0.88 0.95
TC 3.28 3.09 2.90
-7/-8 PI 0.92 0.99 1.06
TC 3.39 3.20 3.01
-1/-2 PI 0.97 1.04 1.11
TC 3.47 3.28 3.09
2/1 PI 1.00 1.07 1.14
TC 4.49 4.30 4.11
7/6 PI 1.06 1.13 1.19
TC 4.74 4.55 4.36
10/9 PI 1.12 1.19 1.26
TC 4.99 4.80 4.60
15/12 PI 1.18 1.25 1.32
15-24 TC 85 - 105 % of nominal
(Protection Range) PI 80 - 120 % of nominal
LEGEND
TH – Total Heating Capacity, kW
PI – Power Input, kW
WB – Wet Bulb Temp., (oC)
DB – Dry Bulb Temp., (oC)
ID – Indoor
OU - Outdoor
5.3.4 Capacity Correction Factors
0.5
0.6
0.7
0.8
0.9
1
1.1
1.2
-15 -10 -5 0 5 10 15
Outdoor WB Temperature [deg C]
Capacity Ratio
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PERFORMANCE DATA
5-6 Revision 0 Service Manual – WNG DCI
5.4 Capacity Correction Factor Due to Tubing Length
5.4.1 Cooling
0.91
0.92
0.93
0.94
0.95
0.96
0.97
0.98
0.99
1.00
1.01
3 4 5 6 7 8 9 1011121314151617181920
Tubing Length [m]
Capacity Ratio
5.4.2 Heating
0.90
0.92
0.94
0.96
0.98
1.00
1.02
3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Tubing Length [m]
Capacity Ratio
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OP RATING CURVESE
Service Manual – WNG DCI Revision 0 6-1
500
600
700
800
900
1000
1100
1200
1300
1400
10 15 20 25 30 35 40 45
Suction Pressure [kPa]
22/15
24/17
27/19
29/21
32/23
Suction Pressure VS. Outdoor Temp' Indoor DB/WB
Temp.
Outdoor Temp.(°C DB)
1000
1250
1500
1750
2000
2250
2500
2750
3000
3250
3500
3750
4000
10 15 20 25 30 35 40 45
Discharge Pressure [kPa]
22/15
24/17
27/19
29/21
32/23
Indoor DB/WB
Temp.
Discharge Pressure VS. Outdoor Temp'
Outdoor Temp.(°C DB)
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6. PRESSURE CURVES
6.1 Model: WNG 25+25 DUO 50 DCI
6.1.1 Cooling – Test Mode
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OP RATING CURVESE
6-2 Revision 0 Service Manual – WNG DCI
Model: WNG 25 DCI
6.1.2 Heating – Test Mode
200
300
400
500
600
700
800
900
1000
1100
1200
1300
-15 -10 -5 0 5 10 15
Suction Pressure [kPa]
15
20
25
Suction Pressure VS. Outdoor Temp'
Outdoor Temp.(°C WB)
Indoor DB
Temp'
1000
1250
1500
1750
2000
2250
2500
2750
3000
3250
3500
-15 -10 -5 0 5 10 15
Discharge Pressure [kPa]
15
20
25
Discharge Pressure VS. Outdoor Temp'
Indoor DB
Temp'
Outdoor Temp.(°C WB)
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OP RATING CURVESE
Service Manual – WNG DCI 6-3
6.2 Model: WNG 35 DCI
6.2.1 Cooling – Test Mode
500
600
700
800
900
1000
1100
1200
1300
1400
10 15 20 25 30 35 40 45
Suction Pressure [kPa]
22/15
24/17
27/19
29/21
32/23
Suction Pressure VS. Outdoor Temp'
Indoor DB/WB
Temp.
Outdoor Temp.(°C DB)
1000
1250
1500
1750
2000
2250
2500
2750
3000
3250
3500
3750
4000
10 15 20 25 30 35 40 45
Discharge Pressure [kPa]
22/15
24/17
27/19
29/21
32/23
Discharge Pressure VS. Outdoor Temp'
Indoor DB/WB
Temp.
Outdoor Temp.(°C DB)
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