Domestic hot water heat pump DROPS M4.1 – Efficient hot water preparation

Features of the device

The DROPS M4.1 domestic hot water heat pump impresses with its highly efficient rotary compressor, which ensures reliable and economical heat recovery. An additional expansion valve ensures effective and rapid evaporator defrosting, while the energy-efficient radial fan ensures optimal air circulation.

The evaporator, with its hydrophilic surface, is less prone to icing, defrosts effectively, and offers better protection against contamination. An integrated circulation pump with PZH certification guarantees hygienic and safe circulation of domestic water. A plate heat exchanger is installed for more direct water heating, and the lightweight, removable plastic housing effectively reduces the noise of the cooling system.

Basic functions

The DROPS M4.1 allows for quick and easy indoor installation and is characterized by high energy efficiency. Pressure and temperature protection of the refrigeration system ensure maximum safety, while defrosting of the evaporator is carried out automatically by reversing the refrigeration cycle.

An automatic frost protection system protects against damage in subzero temperatures. The integrated weekly schedule allows you to set the desired water temperature for different times, and an optional connection to a photovoltaic system is possible via a potential-free contact.

The control unit regulates an external electric heater installed in the storage tank, as well as the domestic hot water circulation pump, according to a timer program. All components that come into contact with domestic hot water are PZH-certified and meet the highest hygiene standards.

Installation and operation

The heat pump is operated via a manual control panel with a graphic display (M) or, optionally, an intuitive color touch panel (D). The user-friendly interface allows for quick adjustment of all operating parameters and a clear display of temperatures and time programs.

Thanks to adjustable feet, the DROPS M4.1 can be easily mounted on any flat surface. The removable plastic housing allows quick access to the components and also contributes to noise reduction, ensuring particularly quiet operation.

Technical data

The heat pump has a diameter of 661 mm and a height of 585 mm, with an air duct diameter of 250 mm. Connections are made with 3/4" internal threads. The refrigerant R134a is used in a charge of 0.60 kg. The heat transfer medium is water or a water-glycol mixture up to 50% at a maximum water pressure of 6 bar.

Operation is possible in the temperature range from -7 °C to +43 °C, the maximum domestic water temperature is 55 °C. With a sound power of 57 dB, a voltage of 1/N/PE ~220–240 V/50 Hz and a COP of 3.0 (A15/W10-55) or 3.3 (A20/W10-55), the DROPS M4.1 achieves energy class A+. The rated heat output is 1.5 kW, and the total weight is 45 kg.

Technical details

• Dimensions (diameter/height): 661/585 mm
• Diameter of air ducts: 250 mm
• Connections: IG 3/4"
• Refrigerant: R134a/0.60 kg
• Heat transfer medium: Water or a mixture of water and glycol (up to 50%)
• Maximum pressure of the water side: 6 bar
• Operating temperature: -7 to 43 °C
• Maximum domestic water temperature: 55 °C
• Sound power: 57 dB
• Power supply: 1/N/PE 220-240 V/50 Hz
• COP A15/W10-55: 3.0
• COP A20/W10-55: 3.3
• Nominal heat output: 1.5 kW
• Energy efficiency class: A+
• Water consumption profile: L
• Weight: 45 kg

Scope of delivery

• Drops 4.1 M or D
• Assembly & operating instructions
• no wall mount included

optional accessories

• Wall mount for DROPS

suitable storage for the product

• Sunex Fish S15 with 1 heat exchanger
• Sunex Fish S16 with 2 heat exchangers

Download

• Product data sheet
• Energy label DROPS M
• Energy label DROPS D
• DROPS instruction manual