Rainmaster

Powerful and energy-efficient pump options for rainwater harvesting and treated greywater transfer.

RAINMASTER units are not just pumps! They come standard with flow controller and integrated, automated mains water switch-over for those times when the rainwater tank is empty. Because of their quiet operation, they are typically mounted inside in the garage or utility room.

RAINMASTER Pump & Control units are installed in homes, businesses, hotels and office buildings throughout Southern Africa. They are popular because of their ability to perform to specification, their low maintenance requirements and their long service life.

RAINMASTER Pump & Control units are helping architects and engineers achieve Green Star Building status for their clients worldwide.

What do RAINMASTER pumps offer you?

  • German engineering for quiet, efficient and economical water transfer;
  • integrated mains-water back-up on all models – no filling large tanks with thousands of liters of municipal drinking water when your rainwater runs dry;
  • floating suction filter on intake line – no drawing dirty water off the tank bottom that can block internal flush valves or sprinkler heads;
  • remote LED tank water level indicator (optional on all models);
  • low maintenance, lowest running costs, longest service life;
  • tried and proven performance – thousands currently in operation worldwide;
  • various models offering pressure and flow rate choices.

RAINMASTER pump & control unit options

RAINMASTER ECO

RAINMASTER-ECO is known as the most economical rainwater control module in the world.

Most pumps used for rainwater/grey water transfer are high pressure, which means high power consumption, which is often an overkill.

Designed specifically for single level dwellings and low-pressure applications, such as filling toilet cisterns and washing machines/laundry use, the RM-ECO features a computer controlled, low pressure diaphragm pump capable of pumping 10 litres per minute at up to 3 bar pressure. The pump is rated at an unbelievably low 90W power input – compared to an average power consumption of 1kW for centrifugal pumps. It features a 24 volt power supply and in-built inverter which can be easily run from a PV source.

Low pressure model RM-ECO specs:

RM-ECO = 90W 10l/minute at 3.0 bar pressure

RM-ECO features built-in DVGW certified mains water back-up as standard – meaning the mains water line is connected to the unit and automatically switches to mains water sourcing as soon as your rainwater in the tank runs dry. It switches back automatically as soon as it rains again.

RAINMASTER FAVORIT – standard version

RM-Favorit models are multi-stage, high pressure centrifugal pumps featuring INTEGRATED mains water back-up & computer control operation.

Used in high pressure pumping applications RM-Favorit standard version comes in 2 models:

RMF-20 – 0.8kW 80l/minute at 4.8 bar pressure version.
RMF-40 – 1.25kW 110l/minute at 7.2 bar pressure version.

Ideally suited for residential homes where high pressure water is needed for bath/shower/toilet and irrigation systems – or in light commercial pumping applications, where direct flush toilets and urinals (using e.g. flushmaster valves) require high, reliable pressure – these units provide the advantages of German reliability, low maintenance and years of pumping excellence.

RM-Favorit units feature built-in mains water back-up as standard – meaning the mains water line is connected to the unit and automatically switches to mains water sourcing as soon as your rainwater tank runs dry. It switches back automatically as soon as it rains again.

RM-FAVORIT key features

  • can save the average suburban home up to 100% of their municipal water use
  • DVGW certified, integrated mains water back-up as standard
  • built-in pump controller as standard
  • 2 models for 80 or 110 litres/minute @ 4.8 or 7.2 bar pressure
  • perfect for all high pressure pumping situations
  • indoor wall mounting
  • German design & manufacture
  • long service life, high efficiency, minimal maintenance

RAINMASTER FAVORIT SC – variable speed version

RM-Favorit SC models are multi-stage, variable speed pump & control units and offer lowest running costs and maintenance intervals.

Used in high pressure pumping applications RM-Favorit SC comes in 2 models:

RMF-20SC – .8kW 0-80l/minute at 4.8 bar pressure version; or
RMF-40SC – 1.25kW 0-110l/minute at 7.2 bar pressure version.

RAINMASTER Favorit SC models are equipped with a variable speed controller. It regulates the speed of the pump to adjust the pressure to the required flow rate. This has great advantages for the user. This pumping system is especially durable, quiet and economical in its consumption of power.

RMF-SC units are modular and up to three units can be connected together. Each individual RAINMASTER Favorit SC unit works together with the group to maintain system pressure. Conventional multiple pump systems have only one control and mains water supply. Should this unit fail, the entire building does not receive any water. By contrast, each RAINMASTER Favorit SC has a separate controller and a separate mains water back-up supply. Should one unit fail, then this is communicated via Bluetooth, and the other units continue to work independently  so that the building never runs dry.

An all round superior pumping system guaranteeing pumping reliability with built in redundancy.

RM-FAVORIT SC key features

  • German design and manufacture
  • can save businesses up to 100% of their municipal water bill
  • 40% less power usage than other centrifugal pumps
  • 70% less noise emission than other centrifugal pumps
  • 40% longer service life than other centrifugal pumps
  • DVGW certified integrated mains water back-up as standard
  • 2 models pumping from 80 to 300 litres/minute @ 4.8 or 7.2 bar pressure
  • up to 3 x units can be connected in parallel (100l/min or 200l/min or 300l/min)
  • units sync and communicate together via Bluetooth
  • in-built redundancy – complete water pumping security at all times
  • if one unit malfunctions then the others take up the load
  • perfect for commercial applications where pumping security or a redundant back-up system is mandated

 

RAINMASTER technology

So what makes RAINMASTER pump & control systems different from other types of pumps used in water transfer?

RAINMASTER units are more than just pumps – they incorporate the pump, with controller, INTEGRATED mains water supply,electronic ball valve all controlled via automatic operation and monitoring software.

Units are also supplied standard with float switches, flexible pressure line couplers and stop valves. So when comparing price, for example, one must compare the cost of all of these elements (usually supplied separately in other systems) with the RAINMASTER fully integrated pump & control unit concept.

Units are designed using the German standard of high efficiency, low maintenance & long service life.

INTEWA have been producing RAINMASTER units now for 20 years, with tens of thousands operating throughout Europe and abroad, and their robust unit design has led to an excellent in-field service record over this time.

RAINMASTER units are wall mounted, taking up little space and because they are quiet they are often mounted in the garage, plant or pump room, or cellar during residential installations. The water is drawn by the pump from the tank, via an intake suction hose. RAINMASTER pump technology can be used for supplying a number of water consumers, either within or outside the building, such as for baths and showers, flushing toilets, laundries, pop-up irrigation and cleaning systems, cooling systems and for other water pumping requirements.

Should the rainwater tank run dry at any time then the RAINMASTER unit automatically switches over to the integrated, safe-certified supplemental supply of mains water to continue supplying water. As soon as it rains again the unit automatically switches back to the tank water source.

Recognising that there are many uses for rainwater and treated waste water, in both residential and commercial applications, INTEWA offers both low pressure and high pressure pumping options to cover all requirements.

Typical RAINMASTER Components

RAINMASTER technical specifications

Rainmaster ECO

Dimensions (H x W x D) / Weight: 398 x 353 x 200 mm / 8 kg
Switchable power supply input: 110-230 V AC / 50-60 Hz
Switchable power supply output: 24 V DC +- 5%
Basic controller input: 22-28 V DC
Power intake: 90 W
Max. operating pressure: 3,2 bar
Max. Volume flow rate: 10 l/min
Intake height (self-priming): see intake diagram
Pump start-up pressure: ca. 2.2 bar
Protection class: IP 44
Noise level: approx. 48 dBA
Permitted mains water preliminary pressure: 2.5 – 6 bar
Max. height between pump and consumer: 10m
Float switch:
Cable length x cross section: 15 m x Ø8mm
Protection class: IP68

Rainmaster FAVORIT 20 / 40 models

Dimensions (H x W x D) 595 x 550 x 265 mm
Weight: 32 kg / 33 kg
Power supply input: 230 V AC / 50 Hz
Power rating: 0,8 kW / 1,25 kW
Power intake: 4 A / 5,8A
Motor capacitor: 12,5 μF / 20 μF
Max. operating pressure: 4,5 bar / 5,5 bar
Max. volume flow rate: 80 l/min / 110 l/min
Noise level: 60 dBa / 65 dBa
Intake height (self-priming): see intake diagram
Pump start-up pressure: 1,0 – 2,2 bar (adjustable),
Factory setting: 1,5 bar 1,0 – 2,2 bar (adjustable)
Protection class: IP 54 IP 54
Max. mains water pressure: 2,5 – 6 bar / 2,5 – 6 bar
Highest consumer above RM Favorit: 15 m / 15 m
Cable length x Cross section: 15 m x Ø9 mm, (3 x 1,0mm²)
Protection class: IP68 / IP68

Rainmaster FAVORIT SC 20 / 40 models

Dimensions (H x W x D) 595 x 550 x 265 mm
Weight: 33 kg / 34 kg
Power supply input: 230 V AC / 50 Hz
Power rating: 0,8 kW / 1,25 kW
Power supply output pump controller: 3 x 230 V / 0-55Hz
Power intake: 2,6 A / 3,5A
Max. operating pressure: 2.0-4,5 bar / 2.0-5,5 bar
Max. volume flow rate: 80 l/min / 110 l/min
Noise level: 35-60 dBa / 35-65 dBa
Intake height (self-priming): see intake diagram
Protection class: IP 54
Max. mains water pressure: 2,5 – 6 bar / 2,5 – 6 bar
Highest consumer above RM Favorit: 20 m / 30 m
Cable length x Cross section: 15 m x Ø9 mm, (3 x 1,0mm²)
Protection class: IP68

Rainmaster FAVORIT SC 20 / 40 models – duplex & triplex systems

Technical Documentation