Free Cooling Self-contained DX Package Unit
If the outdoor air heat content or temp. is below that of the return air, a fresh air damper opens and return air damper closed to provide the first stage of cooling. Operating costs are reduced as the compressor will only operate to provide more cooling if it is required.
Функции
CASING&STRUCTURE
The casing is made of zinc coated galvanised steel sheets. It is further treated with an electrostatic powder coat then over baked to provide a weather resistant finish to suit the harsh climate. The screws are also zinc plated to improved product durability.
COMPRESSOR
High efficiency scroll type compressor is hermetically sealed, quiet running and supported on rubber mounts to minimise vibration. All compressors are provided with an internal overload protection, and incorporate crankcase heater for smooth start-up under any conditions.
CONDENSER AND EVAPORATOR
The condenser and evaporator coils are manufactured from seamless copper tubes mechanically bonded to b lue hydrophilic aluminium fins to ensure optimum heat transfer . The shoulder of each fin adjoins the shoulder of the adjacent fin, completely encasing the copper tubes for maximum heat transfer. The generously sized coils provide ample capacity under all normal operating conditions. All coils are pressure tested t o 450Psi at the factory to avoid leakage. To improve corrosion resistance, a hydrophilic Gold Fin is provided as optional.
CONDENSER FAN AND MOTOR
Direct driven propeller axial fans are used for maximum condensing efficiency.
EVAPORATOR FAN AND MOTOR
Fans are of the centrifugal type that is designed for maximum efficiency for uniform air distribution. Traditional belt driven or EC plug-fan.
INSULATION
Ripple type acoustic insulation for compressor section , low noise. To prevent the likelihood of condensation occurring the unit is equipped with 10mm Polyethylene panel insulation for coil & fan section .
S AFETY
Electric panel consists of breakers and contactors for compressors and fan motors, phase sequence relay and other necessary protection devices for the main components. All electric parts are Schneider Electric brand.
* SIEMENS PLC controller is optional. * Main power supply breaker is optional.
EASY INSTALLATION AND MAINTENANCE
The base beams are fixed and provide a rigid foundation for the entire unit. The bea m has forklift slots or rigging holes for easy handling. To keep installation as hassle-free as possible, Sendo Roof Top Units are fully factory assembled , tested and charged with R410A refrigerant. Only ductwork and external wiring connections are required to make the units completely operable ensuring rapid, low-cost installation. For ease of commissioning and maintenance, Sendo Rooftop Packaged Air Conditioners include easy access to the electrical cabinet and major refrigeration components. The unit provides external pressure gauge for convenient and fast checking system pressure without removing the panel. If the unit is in running with abnormal operation, the controller will show the error code for easy troubleshooting.
O PTIONAL ACCESSORIES
Tropical climate T3 application
Optional supply / return air configuration
Optional golden condenser & evaporator for some area need special anti-corrosion
Economizer /Free cooling
Additional water heating coil
Additional electric heater
Heat recovery
100% Full fresh air
Optional high level filter
Optional precision temperature & humidity control
Технические характеристики
|
Model SRT-ST1HXXA(BD)
|
12
|
15
|
20
|
25
|
30
|
35
|
45
|
50
|
60
|
70
|
90
|
100
|
120
|
140
|
150
|
180
|
200
|
300
|
400
|
|
Cooling
|
Capacity
|
kW
|
12
|
15.2
|
17.5
|
24
|
30.3
|
35.6
|
44.5
|
50
|
60
|
70
|
90
|
105
|
120
|
140
|
150
|
180
|
210
|
298
|
392
|
|
Power Input
|
kW
|
4.1
|
5.3
|
5.5
|
8.8
|
11.3
|
12.3
|
17.0
|
19.5
|
22.8
|
26.7
|
32.9
|
39.7
|
45.1
|
55.7
|
55.1
|
69.9
|
83
|
106.7
|
140.2
|
|
Heating
|
Capacity
|
kW
|
13.2
|
16.6
|
18.4
|
26.5
|
33.3
|
37.7
|
48.7
|
54.3
|
64
|
75.4
|
96.2
|
113.2
|
128.3
|
150
|
159.2
|
192.5
|
226
|
318
|
414
|
|
Power Input
|
kW
|
3.8
|
4.8
|
5.1
|
8.2
|
10.4
|
11.3
|
15.6
|
18
|
21
|
24.8
|
30.4
|
36.7
|
41.7
|
51.8
|
51.5
|
64.8
|
77
|
100
|
133.8
|
|
Refrigerant
|
Type
|
R410A
|
|
Compressor
|
Type
|
Scroll
|
|
Condenser
|
Type
|
Copper Tubes Mechanically Expanded into Blue Hydrophilic Aluminum Fins
|
|
Condenser Fan
|
Type
|
Axial / Direct
|
|
Evaporator
|
Type
|
Copper Tubes Mechanically Expanded into Blue Hydrophilic Aluminum Fins
|
|
Evaporator Fan
|
Fan
|
Type
|
Belt-Driven Centrifugal Fans
|
|
Supply Airflow
|
m3/h
|
2100
|
2600
|
3400
|
4100
|
5200
|
6300
|
7600
|
8500
|
10900
|
12500
|
16000
|
19500
|
21000
|
25000
|
26000
|
32000
|
38000
|
54000
|
67000
|
|
ESP
|
Pa
|
100
|
100
|
100
|
200
|
200
|
250
|
250
|
250
|
300
|
300
|
300
|
300
|
400
|
400
|
450
|
500
|
500
|
500
|
500
|
|
Filter
|
Standard
|
Type
|
G3 Aluminium Filter / Washable
|
|
Sound Level
|
dB(A)
|
67
|
67
|
68
|
71
|
72
|
72
|
73
|
73
|
73
|
74
|
74
|
75
|
76
|
79
|
79
|
80
|
80
|
82
|
86
|
* Performance values refer to the following conditions: Cooling: room air temperature 27.0°C DB RH 50%, ambient air temperature 35°C;
Heating: room air temperature 21.0°C DB, ambient air temperature 7°C DB / 6°C WB .
** Noise level measured by adopting average value in the noise lab with background noise of 25 dB(A), at a distance of 1.5m high fan speed.
***Specifications are subject to change without prior notice for SENDO product improvement.
Dimension (Please contact manufacturer for more information)
цех
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