central heating circulating pump for Heat Pump
central heating circulating pump for Heat Pump
central heating circulating pump for Heat Pump

Master H 25-6 Pro Heat Pump Circulator Pump

Technical data

Power supply voltage

220~240V,AC,Protective earth

Motor protection       

No external protection required

IP class

IP44

Insulation class         

H

Humidity(RH) 

Max 95%

System pressure

1.0 Mpa

Compliance

EMC/RoHS/REACH/TUV/CE/EEI/CCC

Environment temperature

-30℃~55℃

Temperature class

TF 95

Liquid temperature

-20℃~+95℃

Connection/Unions

Molex/TE

  • Item NO.:

    Master H 25-6 Pro

1. Domestic heating and water supply system

2. Air and ground source heat pump system

3.Air-conditioning system

4. Industrial hot water circulation system

5.Solar thermal system

6. Compatibility with R290 All Inverter Heat Pump

 

 

 

Easy installation and operation

Equipped with Self Adapting mode AUTO (default 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

Precise flow feedback,±0.2m³/h 

Noise index<36dB(A), especially in heat pump system

Suitable for Propane refrigerant, such as R290

Low energy consumption

Lowest power consumption up to 3W

Multiple protection

With over-voltage and over-current protection

Eco-Design Benchmark

EEI≤0.20-Part 3

Quick release power plug

Start-up and stop the pump quickly.

 

 

 

 

 Parameters

Maximum flow:3.2m³/h

Maximum head:6m

Rated flow:2m³/h

Rated head:3.3m

Rated voltage:220-240V AC

Rated current:0.35A

Frequency:50/60Hz

Input power:39W

Design pressure:1.0MPa

Noise:<36dB(A)

Standby power:≤3W

Degree of protection:IP44

Surge current:<5A

Temperature class:TF95

Weight of bare pump with wire:2kg±5%

Speed:1000~3500rpm

Media requirements

Medium: water or water + glycol (≤ 50%)mixture

Medium temperature : -20℃∼95℃

PH value of medium 6.5-8.5

Medium hardness 25°dH

Content of solid impurities in medium: diameter and length direction of solid impurities ≤ 0.1mm, and volume ratio ≤ 0.1%

 

Service environment requirements

The working environment temperature of the pump should be synchronized with the medium temperature of -20~95℃, as shown in the figure on the right (the maximum ethylene glycol concentration is 50%, that is, the medium The minimum temperature is -30℃)

Start and stop of pump

Starting time: the starting time of the water pump is less than 8S, the time from power on to reaching the maximum speed

In PWM mode, when starting from the stop state of the water pump (without power supply), 90% of the maximum speed must be reached in at least 8 seconds

In PWM mode, start from standby mode and reach 90% of the maximum speed in at least 8 seconds

Shutdown time: the shutdown time of the water pump is less than 1 s, that is, the time from power failure to shutdown of the water pump

Power connection

Voltage220-240V AC(±10% )

Frequency50/60Hz

PWM input signal voltage5-32V

Minimum input current4mA

PWM input signal frequency: 100-2000Hz

PWM output signal: collector open-drain output, must be connected to a pull-up resistor,the voltage is selected according to the signal acquisition range of the host computer

Installation Drawing

Master H 20-6 Pro Installation Drawing

 

This performance curve is suitable for normal temperature water, if the pump is used for non-water medium, the hydraulic performance of the pump will be reduced , therefore, in the selection of pump, must consider the characteristics of the liquid medium.

Performance curve under different duty cycles in PWM mode 

Master H 25-6 Pro

Master H 25-6 Pro P-Q

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