MINILINE

Small-capacity reversible heat pumps

The MINILINE heat pump series is developed to meet the requirements of smaller-capacity systems. MINILINE heat pumps can be designed as reversible units, enabling operation in cooling mode as well. Therefore, reversible heat pumps represent a high-quality solution for covering seasonal heating or cooling demands.

MINILINE heat pumps use scroll or semi-hermetic reciprocating compressors designed and certified for operation with flammable refrigerants. For precise capacity control and energy savings, the compressor is controlled by a frequency inverter. The air heat exchanger is made of copper tubes with aluminum fins. The fan is axial with an EC motor, enabling variable speed control and high operating efficiency. The units are intended for outdoor installation.

MINILINE heat pumps can also be designed as high-temperature heat pumps using natural refrigerant R600a, for hot water heating up to 90 °C. For details, please consult the manufacturer.

Each unit is factory tested and delivered pre-charged with refrigerant and oil. Conformity assessment is carried out in accordance with the European Pressure Equipment Directive (PED) 2014/68/EU. The unit complies with all safety and environmental requirements.

Number of compressors: 1

Number of air heat exchangers: 1

Unit dimensions:

  • Length (without connections): 2563 mm
  • Width: 1005 mm
  • Height: 1926 mm

Heating capacity:

MINILINE L1 unit

Number of compressors: 1

Number of air heat exchangers: 1

Unit dimensions:

  • Length (without connections): 2853 mm
  • Width: 1154 mm
  • Height: 2197 mm

Heating capacity:

MINILINE L1 unit

GENERAL

  • Powder-coated galvanized steel housing, corrosion and weather resistant, standard color RAL 7035
  • Removable housing panels
  • Anti-vibration mounts
  • Compressor compartment located in a separate protective enclosure within the housing
  • Pipe insulation to prevent condensation
  • Safety strategy — refrigerant leak detector combined with an ATEX fan

ELECTRICAL

  • Main power switch and phase monitoring relay
  • Electrical protection for all components
  • Advanced microprocessor controller Siemens Climatix
  • Touchscreen display for monitoring and controlling unit operation
  • Electronic expansion valve for precise refrigerant flow control
  • Communication protocols: Modbus TCP/IP, Modbus RTU or BACnet IP
  • Dry contacts for alarms
  • Cabinet lamp with socket
  • Electrical cabinet heater (250 W)
  • Remote monitoring (Siemens Cloud)

HYDRAULIC CIRCUIT

  • Hydraulic piping made of stainless steel or copper, depending on pipe diameter
  • Hydraulic connection via copper connection (shut-off valve) or free flange, depending on pipe material
  • Air vent valve
  • Drain valve
  • Flow switch
  • Thermal insulation of piping

GENERAL

  • Custom housing color
  • Low-noise version with additional sound insulation
  • Safety valves
  • Waste heat recovery (“heat recovery”) via a series-connected plate heat exchanger (condenser), only for reversible heat pumps

ELECTRICAL

  • Electrical energy meter (for the entire unit)

HYDRAULIC CIRCUIT

  • Primary circulation pump
  • Hot-side circulation pump (only if waste heat recovery is selected)
  • Self-regulating heating cables for frost protection
  • Hydraulic circuit upgrade using a hydromodule (option to add buffer tank and/or secondary pump)