Product Introduction
EC backward curved centrifugal fans are widely used in modern HVAC systems due to their high efficiency, low noise operation, and intelligent speed control capabilities. Equipped with advanced EC (Electronically Commutated) motors and aerodynamically optimized backward curved impellers, these fans deliver stable airflow and high static pressure while consuming significantly less energy than traditional AC centrifugal fans. In heating, ventilation, and air conditioning applications, they are commonly integrated into air handling units (AHU), fan filter units (FFU), heat recovery systems, and duct ventilation systems. With airflow capacities ranging from small equipment cooling to large commercial ventilation, EC backward curved centrifugal fans provide precise airflow regulation through 0–10V, PWM, or Modbus/RS485 control signals. This enables HVAC systems to adjust ventilation performance based on real-time environmental conditions, improving indoor air quality while reducing operating costs. Their compact design, long service life exceeding 50,000 hours, and compliance with energy efficiency standards such as ErP make EC backward curved centrifugal fans an ideal solution for energy-efficient HVAC systems in commercial buildings, industrial facilities, and data centers.
EC backward curved centrifugal fan hvac technical parameters:
|
Model No. |
Rated |
Operation Voltage |
Frequency |
Rated |
Rated Power |
Rated |
Air Flow |
Air |
Noise |
|
VAC |
VAC |
Hz |
A |
W |
RPM |
m3/h |
Pa |
dBA |
|
|
EN-B355-H096-E115-C01 |
115 |
90~135 |
50/60 |
3.36 |
385 |
2050 |
3620 |
800 |
75 |
|
EN-B355-H096-E230-C01 |
230 |
184~274 |
50/60 |
1.68 |
385 |
2050 |
3620 |
800 |
75 |
|
EN-B355-H096-E380-C01 |
380 |
310~460 |
50/60 |
1.06 |
385 |
2050 |
3620 |
800 |
75 |
Outline Drawing：
Performance Curve
Connection
|
DC Wire |
AC Wire |
||
|
Color |
Function |
Color |
Function |
|
Red |
+10VDC |
Brown |
L |
|
Blue |
GND |
Blue |
N |
|
Yellow |
0~10VDC/PWM |
Green/Yellow |
PE |
|
White |
FG |
||
For residential ventilation, compact EC backward curved centrifugal fans are designed with small size, aesthetic appearance, and high energy efficiency. These fans can be installed directly in ceiling spaces or wall structures, saving indoor space while maintaining an attractive interior design.
The fan operates with extremely low noise levels, typically below 40 dB, ensuring that household activities are not disturbed.
Airflow can be adjusted according to indoor air quality requirements, effectively removing odors, humidity, and stale air while introducing fresh air into the living environment.
Because of the fan's extremely low power consumption, even 24-hour continuous operation results in minimal electricity costs, making it ideal for apartments, houses, and residential ventilation systems.
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FAQ
1. Are EC fans suitable for continuous 24/7 operation?
Yes, EC fans are designed for continuous operation. High motor efficiency reduces heat generation. Integrated protection features support stable long-term use. They are suitable for ventilation systems requiring nonstop operation.
2. How does airflow control benefit industrial systems?
Adjustable airflow allows systems to match actual process requirements. EC fans enable precise airflow regulation. This improves process stability and reduces energy waste. It also extends component service life.
3. Can EC centrifugal fans be used in industrial process cooling?
EC centrifugal fans are suitable for industrial process cooling. They provide reliable airflow under continuous operation. Speed control allows adaptation to process demand. Proper specification ensures stable cooling performance.
4. Are EC fans suitable for laboratory ventilation systems?
EC fans are used in laboratory ventilation systems when properly specified. Stable airflow control supports safety requirements. They can be integrated with monitoring systems. Application conditions must be clearly defined.
5. How does this EC fan help reduce total cost of ownership?
This EC fan reduces energy consumption during operation. High efficiency at partial load lowers electricity costs. Reduced maintenance requirements also contribute to cost savings. Over time, this helps reduce total ownership cost.