Omega OTEC IECS-D Series User manual

IECS-D Series
Round-Flow Ceiling Cassette
Technical Manual

Applicable Models:
Indoor units:
Four-Way Cassette
IECS018J3A-DWG053
IECS024J3A-DWG071
IECS031J3A-DWG090
IECS036J3A-DWG105
IECS042J3A-DWG120
IECS048J3A-DWG140
Outdoor unit
ICHD009J0A-DMG026
ICHD012J0A-DMG035
ICHD018J0A-DMG053
ICHD024J0A-DMG071
ICHD031J0A-DMG090
ICHD036J0A-DMG105
ICHD042J0A-DMG120
ICHD048J0A-DMG140
ICHD060J0A-DMG160

1
Content
Part. 1 General information ....................................................... 2
Part. 2 Outdoor Unit ................................................................... 6
Part. 3 Indoor Unit ................................................................... 18
Part. 4 Installation & Troubleshooting .................................. 107

2
Part. 1 General information
1. Model Names of Indoor/Outdoor Units .............................. 3
2. External Appearance ............................................................ 4

3
1. Model Names of Indoor/Outdoor Units
Type
Indoor unit
Outdoor unit
Model
Power supply
Model
Power supply
Four-way Cassette IECS018J3A 220-240V~, 1Ph, 50Hz ICHD018J0A 220-240V~, 1Ph, 50Hz
Four-way Cassette IECS024J3A 220-240V~, 1Ph, 50Hz ICHD024J0A 220-240V~, 1Ph, 50Hz
Four-way Cassette IECS031J3A 220-240V~, 1Ph, 50Hz ICHD031J0A 220-240V~, 1Ph, 50Hz
Four-way Cassette IECS036J3A 220-240V~, 1Ph, 50Hz ICHD036J0A 220-240V~, 1Ph, 50Hz
Four-way Cassette IECS042J3A 220-240V~, 1Ph, 50Hz ICHD042J0A 220-240V~, 1Ph, 50Hz
Four-way Cassette IECS048J3A 220-240V~, 1Ph, 50Hz ICHD048J0A 220-240V~, 1Ph, 50Hz

4
2. External Appearance
2.1 Indoor units
IECS018J3A / IECS024J3A / IECS031J3A / IECS036J3A / IECS042J3A / IECS048J3A / IECS060J3A
2.2 Outdoor unit
ICHD009J0A / ICHD012J0A / ICHD018J0A/ ICHD024J0A
ICHD031J0A/ ICHD036J0A / ICHD042J0A / ICHD048J0A/ ICHD060J0A

7
Part. 2 Outdoor Unit
1. Specifications ...................................................................... 7
2. Dimension (Unit:mm) .......................................................... 9
3. Refrigerant circuit ............................................................. 10
4. Wiring Diagrams ................................................................ 14
5. Electric Characteristics .................................................... 16
6. Sound Levels ..................................................................... 17
7. Accessories ....................................................................... 17

23
Part. 3 Indoor Unit
1.Specifications ....................................................................... 19
2.Dimensions (Unit: mm) ....................................................... 21
3.Wiring Diagrams .................................................................. 32
4.Capacity Table ...................................................................... 23
5.Static Pressure Curve ......................................................... 46
6.Electric Characteristics ....................................................... 48
7.Sound Levels ........................................................................ 49
8. Accessories ......................................................................... 49

27
Table 1.4: IECS018, 024, 031, 036 specifications
Model name
IECS018J3A IECS024J3A IECS031J3A IECS036J3A
Power supply
1-phase, 220-240V, 50Hz
Cooling
Capacity
W
5300(1050~6200)
7200(2400~8200)
9000(2800~9400)
10500(3200~11200)
Input (IDU+ODU)
W
1600(330~2520)
2240(560~2840)
3000(680~3480)
3500(820-4200)
Input (IDU)
W
80
100
100
190
EER
/
3.31
3.21
3.00
3.00
Heating
Capacity
W
6000(1340~6600)
8200(1880~8800)
9900(2600~10200)
11600(3300~12500)
Input (IDU+ODU)
W
1740(350~2250)
2740(435~3180)
3000(640~3520)
3400(800-4300)
Input (IDU)
W
80
100
100
190
COP
/
3.45
2.99
3.30
3.41
Fan motor
Model
YDK26-6S
YDK30-6S
YDK30-6S
YDK65-6S
Type
Ac motor
Brand
Welling
Speed (H/M/L)
r/min
490/400/340
590/500/420
590/500/420
630/590/480
Coil
Number of rows
2
2
2
2
Tube pitch × row pitch
mm
21×13.37
21×13.37
21×13.37
21×13.37
Fin spacing
mm
1.5
Fin type
Arc shutter
Tube OD and type
mm
∅7, Copper pipe with internal thread
Dimensions (L×H ×W)
mm
2051×168×26.7
2051×252×26.7
Number of circuits
8
12
Airflow rate
m3/h
900/730/620
1000/840/710
1200/1000/850
1600/1500/1140
Sound pressure level
dB(A)
38/36/35
41/39/38
43/39/38
46/39/38
Unit
Net dimensions
(W×H×D)
mm
840×230×840
840×300×840
Packed dimensions
(W×H×D)
mm
955×260×955
955×330×955
Net/Gross weight
kg
22.5/27.3
22.8/27.6
23.3/28.1
28.7/33.7
Refrigerant type
R410A
Design pressure (H/L)
MPa
4.4/2.6
Pipe
connections
Liquid/Gas pipe
mm
Ф6.35/Ф12.7
Ф6.35/Ф15.9
Ф9.5/Ф15.9
Ф9.5/Ф15.9
Drain pipe
mm
Ф32
Ф32
Ф32
Ф32
Piping Length
m
25
25
30
30
Level Difference
m
15
15
20
20
Controller
RM05
Panel
Model
T-MBQ4-01E
Net/Gross weight
kg
5.8/7.9
Note:
1. The design implementation standard of this unit is GB/T 18836-2017.
2. The parameters in the table are the nominal values tested under the rated working conditions specified in GB/T 18836-2017, and
actual operating parameters will vary with the working conditions.
3. The above parameters may change due to product improvement. Please refer to the nameplate parameters of the product.

28
Table 1.5: IECS042, 048 specifications
Model name
IECS042J3A IECS048J3A
Power supply
1-phase, 220-240V, 50Hz
Cooling
Capacity
W
12000(3200~12500)
14000(4200~14200)
Input (IDU+ODU)
W
4850(800~5200)
6000(1200~6200)
Input(IDU)
W
190
190
EER
/
2.47
2.33
Heating
Capacity
W
13200(3300~13800)
15400(4500~16000)
Input (IDU+ODU)
W
4500(700~4900)
4800(1000~5200)
Input (IDU)
W
190
190
COP
/
2.93
3.21
Fan motor
Model
YDK65-6S
YDK65-6S
Type
Ac motor
Brand
Welling
Speed (H/M/L)
r/min
630/590/480
660/620/510
Coil
Number of rows
2
3
Tube pitch × row pitch
mm
21×13.37
Fin spacing
mm
1.5
Fin type
Arc shutter
Tube OD and type
mm
∅7, Copper pipe with internal thread
Dimensions (L×H ×W)
mm
2051×252×26.7
2007×252×40.1
Number of circuits
12
12
Airflow rate
m3/h
1600/1500/1140
1720/1600/1220
Sound pressure level
dB(A)
46/39/38
48/41/39
Unit
Net dimensions (W×H×D)
mm
840×300×840
Packed dimensions (W×H×D)
mm
955×330×955
Net/Gross weight
kg
28.7/33.7
30.8/35.8
Refrigerant type
R410A
Design pressure (H/L)
MPa
4.4/2.6
Pipe
connections
Liquid/Gas pipe
mm
Ф9.5/Ф15.9
Ф9.5/Ф15.9
Drain pipe
mm
Ф32
Ф32
Piping Length
m
30
50
Level Difference
m
20
25
Controller
RM05
Panel
Model
T-MBQ4-01E
Net/Gross weight
kg
5.8/7.9
Note:
1. The design implementation standard of this unit is GB/T 18836-2017.
2. The parameters in the table are the nominal values tested under the rated working conditions specified in GB/T 18836-2017, and
actual operating parameters will vary with the working conditions.
3. The above parameters may change due to product improvement. Please refer to the nameplate parameters of the product.