Power supply voltage |
220~240V 50/60Hz, AC |
Model |
Master 25-8 |
Power |
70W |
Motor protection |
No external protection required |
IP class |
IP44 |
Insulation class |
H |
Humidity(RH) |
Max. 95% |
System pressure |
1.0 MPa |
Certification |
CE/ GS/ EMC/RoHS2.0/REACH |
Environment temperature |
-30℃~+70℃ |
Temperature class |
TF110 |
Liquid temperature |
-20℃~+110℃(Glycol up to 50%) |
Type of connection/unions |
Molex /TE/ Shinhoo standard |
Item NO.:
Master D 25-81. Air and ground source heat pump system
2. Domestic Water Recirculation Systems
3. Heating and cooling system with variable pipeline temperature
4. Air conditioning system
5. Industrial and Commercial circulation system
6. Domestic hot water and drinking water supply system
1. Stable heating system with variable flow
2. System with night mode
3. System with variable temperature liquid
4. System with constant or variable flow
Advantages:
1. Intuitive one-button operation makes selection of any control mode simple
2. No external motor protection required reducing installation time
3. High-torque start improves startup under harsh conditions
4. Maintenance free and noiseless due to canned-rotor design and use of robust components
5. Fast connection plug makes electrical installation quick, safe and easy
6. Insulating shells are available to minimize heat loss in heating systems
7. The pump features three constant-curve modes, proportional pressure curves, constant pressure curves, Auto and night mode.
8. The speed can also be controlled by a low-voltage PWM signal from a controller to optimize the system performance, both PWM1 for heating and PWM2 for solar systems are available.
9. High efficiency circulator which features well-designed compact structure, integrated controller and frequency converter.
10. It is easy for installation and operation in most fields of applications.
11. In terms of electricity consumption, the unique operation mode makes High efficiency circulator more energy saving.
Easy installation and operation
Equipped with Self Adapting Mode(Auto Mode, Factory Setting), pump runs once the power is connected and adapts its performance according to actual system needs.Control is effected by digital pulse-width modulation (PWM) low-voltage signal, enabling the pump to be used to meet different flow requirement in various systems.
Low noise and high comfort
Noise index: ≤42dB(A)
Low energy consumption
A class energy efficiency, Power consumption lowest to 5W
Multiple protection
With over-voltage and over-current protection
Eco-Design Benchmark
EEI≤0.21-Part 2
Quick release power plug
Start-up and stop the pump quickly
1.The indicator lights indicate the actual operating status.
2.The pump has a ceramic shaft and radial bearings, carbon thrust bearing, stainless-steel rotor can, bearing plate and rotor cladding, composite impeller, all of which contribute to long life.
3.Best magnet material ensures the high efficiency of motor and pump.
4.The pump is self-venting through the system, which contributes to easy commissioning. The compact design with integrated control box and control panel on side of the motor fits into most common installations.
5.The pump housing is made of cast iron and electro coated to improve the corrosion resistance.
6.The motor is a synchronous permanent-magnet/compact-stator motor characterized by high efficiency.
7..The pump speed is controlled by an integrated frequency converter incorporated in the control box.
8.The pump equipped with different fast connection solutions (fast connector, TE, Molex etc) to fulfill the requirements of different systems.
Working Conditions
1. Ambient temperature
The ambient temperature is -30℃~+70℃.
2. Relative humidity of the air (RH)
The maximum humidity is 95%.
3. Media (conveying liquid) temperature
Temperature of liquid conveying -20℃~110℃.
To prevent the control box and stator from appearing condensate water, the temperature of pump conveying liquid must be always higher than the ambient temperature.
4. System pressure
The maximum is 1.0 MPa (10 bar).
5. Protection Level
IP44
6. Inlet pressure
To avoid damage to the pump bearing caused by cavitation noise, the following minimum pressure should be maintained in the pump inlet:
Liquid temperature |
<75℃ |
95℃ |
110℃ |
Inlet pressure |
0.05bar |
0.5bar |
1.08bar |
Head of delivery of 0.5m |
Head of delivery of 5m |
Head of delivery of 10.8m |
7. Pumping liquid
Thin, clean, non-corrosive and non-explosive liquid does not contain any solid particles,fibers or mineral oil; the pump should not be used for conveying flammable liquid such as vegetable oil and gasoline absolutely. If the circulating pump is used for the case of high viscosity, the pump performance will reduce, therefore, when selecting a pump, the viscosity of liquid must be considered.
8. Installation Drawing
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