HE PWM Circulator Pump
Description
HE PWM circulators pumps are premium high-efficiency circulators of compact design, suitable for all HVAC applications, from boilers and heat pumps to Heat Interface Units (HIU) systems. It is controlled with all basic functions and also PWM function for remote control. The pump features AUTO function which automatically adjusts the pump to system demands for optimal comfort and the lowest energy consumption as well as simple commissioning. The motor is based on permanent-magnet and compact-rotor technology securing silent operation and low energy consumption.
Suitable for:
- Commercial heating
- Commercial hot water recirculation
- Domestic hot water recirculation
- Domestic heating
- Industrial heating
- Heat pumps
- Boilers
Features
Supply voltage:1 x 230 V – 50/60 Hz
Flow rate, Qmax:4.0 m3/h
Pump head, Hmax:8 m
Liquid temperature:+2°C to +110°C (TF 110)
System pressure, Pmax:1.0 MPa/10 bar
Power Range:5-65 W
Ambient temperature:0°C to +40°C
EEI:≤ 0.20
Enclosure class:IP 44
Insulation class:E
Applications
» PWM remote control function along with other intelligent frequency control functions
» Compact design more fit to be built-in circulator for boilers and heat pumps
» Permanent magnet plastic injection motor of completely condensing water proof
» Exceeding benchmark level of the Ecodesign Requirements for 2015(ErP) with EEI ≤ 0.20
» Automatic and continuous detection of optimal duty point by AUTO mode
» Self-venting pump housing
» Visualized operation
» Fault prompt function
» Low noise level
» Based on 500,000 times test in extreme conditions
Key Features
Constant speed mode
Three constant speed modes for constant flow applications
Constant pressure mode
• The pump maintains constant pressure regardless of the flow
• The preferred operation mode for under floor heating and 2 string systems with low flow variation
• Constant pressure curves (low and high)
Proportional pressure mode
• If the proportional pressure mode is selected, the differential pressure varies proportionally with the flow, i.e. higher flow means higher differential pressure
• Proportional pressure is the preferred choice for one-string systems with high flow variation
• Proportional pressure curve (high and low)
Autoadapt mode
• The factory setting, AUTO, analyzes the heating system and automatically adjusts the pump setting to meet the heating requirement. The result is optimum comfort and a minimum of energy consumption.
• AUTO can be used in 80% of the heating systemv
Performance Curve
Technical Data
| Type | Max. volume flow Qmax | Max. delivery head Hmax | Energy efficiency index (EEI) | Thread | Threaded pipe union | Rated pressure | Overall length | Mains connection | Gross weight |
|---|---|---|---|---|---|---|---|---|---|
| HE 20/4 | 2.2 m³/h | 4 m | ≤ 0.20 | G 1″ | G 3/4″ | 10 bar | 130 mm | 1~230 V, 50/60 Hz | 2.0 kg |
| HE 25/4 | 2.5 m³/h | 4 m | ≤ 0.20 | G 1 1/2″ | G 1″ | 10 bar | 130/180 mm | 1~230 V, 50/60 Hz | 2.4 kg |
| HE 32/4 | 2.9 m³/h | 4 m | ≤ 0.20 | G 2″ | G 1 1/4″ | 10 bar | 180 mm | 1~230 V, 50/60 Hz | 2.8 kg |
| HE 20/6 | 2.9 m³/h | 6 m | ≤ 0.20 | G 1″ | G 3/4″ | 10 bar | 130 mm | 1~230 V, 50/60 Hz | 2.0 kg |
| HE 25/6 | 3.2 m³/h | 6 m | ≤ 0.20 | G 1 1/2″ | G 1″ | 10 bar | 130/180 mm | 1~230 V, 50/60 Hz | 2.4 kg |
| HE 32/6 | 3.6 m³/h | 6 m | ≤ 0.20 | G 2″ | G 1 1/4″ | 10 bar | 180 mm | 1~230 V, 50/60 Hz | 2.8 kg |
| HE 20/8 | 2.9 m³/h | 8 m | ≤ 0.21 | G 1″ | G 3/4″ | 10 bar | 130 mm | 1~230 V, 50/60 Hz | 2.0 kg |
| HE 25/8 | 3.6 m³/h | 8 m | ≤ 0.21 | G 1 1/2″ | G 1″ | 10 bar | 130/180 mm | 1~230 V, 50/60 Hz | 2.4 kg |
| HE 32/8 | 4.0 m³/h | 8 m | ≤ 0.21 | G 2″ | G 1 1/4″ | 10 bar | 180 mm | 1~230 V, 50/60 Hz | 2.8 kg |
Measurement
| Type | L1 (mm) | L2 (mm) | L3 (mm) | H1 (mm) | H2 (mm) | H3 (mm) | G (inch) | Material of rear housing |
|---|---|---|---|---|---|---|---|---|
| HE 20/x | 93 | 126 | 99 | 110 | 130 | 60 | 1″ | cast iron |
| HE 25/x | 93 | 126 | 99 | 110 | 130/180 | 60 | 1 1/2″ | cast iron |
| HE 32/x | 93 | 126 | 99 | 110 | 180 | 60 | 2″ | cast iron |
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