New multi-scroll range with the natural refrigerant R290
Galletti solutions are based on a fundamental principle: reducing polluting emissions. This commitment includes direct emissions caused by greenhouse gases, as well as indirect emissions produced by generating the electricity needed to operate heat pumps.
This process led to the creation of PLN, Galletti's new range of monobloc chillers and heat pumps for outdoor installation. Designed with cutting-edge multi-scroll solutions in the 50 to 150 kW power range, they stand out for their use of the natural refrigerant R290 (propane).
With a Global Warming Potential (GWP) of just 3, among the lowest on the market, PLN complies with the strict F-GAS regulations, actively contributing to the reduction of greenhouse gas emissions.
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Plus
- Uses the natural refrigerant R290 (GWP = 3)
- Multi-scroll solutions
- Very high seasonal efficiency values
- Maximum temperature of the water produced: 75°C
- Water produced at 45°C with an outside air temperature of -20°C
- Finned coil circuit designed to ensure reverse-flow exchange between air and refrigerant in every operating mode.
- Smart Grid certification
Features and Versions
- 7 models
- Cooling only
- Reversible heat pump
- Low-noise acoustic configurations
- Electronic expansion valve as a standard feature
- Microchannel coil for cooling-only versions
- High configurability of options and accessories
- On-board hydronic kit with 2 pumps and 1 inertial buffer tank
- Advanced logic for unit safety in case of refrigerant leakage
Technical characteristics
PLN is Galletti's new range of air-cooled monobloc chillers and heat pumps for outdoor installation, equipped with multi-scroll solutions and featuring refrigerant R290. R290 (propane) is a natural refrigerant with a GWP of just 3, one of the lowest on the market. This GWP value ensures that the PLN range complies with the gradual reduction in greenhouse gas emissions mandated by F-GAS regulations.
Additionally, using small-diameter finned coils (microchannels) for refrigerant flow decreases the required refrigerant charge by more than 50% compared to other products with similar power but standard technology.
The range consists of 7 models with cooling capacities ranging from 50 to 150 kW, available in cooling-only or reversible heat pump versions. Using solutions with multiple compressors on the same circuit allows for optimized performance during partial-load operation, in addition to adjusting the power output to the actual thermal load.
This makes it possible to achieve some of the highest seasonal efficiency ratings on the HVAC market: SCOP up to 4.00 and SEER up to 5.00.
The use of top-quality, state-of-the-art components in the cooling, hydraulic, and electrical systems makes PLN chillers state-of-the-art in terms of efficiency, reliability, and operating limits. In fact, they are guaranteed to produce water from -10°C to 75°C and operate at full load when the outdoor air temperature ranges from -20°C to 48°C. Even at an outdoor air temperature of -20°C, it is still possible to produce hot water at 45°C.
This range offers high acoustic and hydraulic configurability. It has a wide range of accessories designed to meet installation requirements in limited spaces. It is possible to include a buffer tank and up to two hydraulic pumps on the unit, as well as a flow meter for continuous monitoring of the power produced, without increasing its dimensions.
The advanced controller, which is standard across the entire range, allows continuous monitoring of operating parameters, advanced adjustment and connectivity logics, and the management of advanced procedures to secure the unit in the event of refrigerant leakage (A3).
Main components
Scroll compressors with an IDV valve
The scroll-type compressors designed to work with R290, which can be sound insulated, include internal thermal protection of the windings and are installed on special anti-vibration supports.
The scroll-type compressors are equipped with an IDV valve. IDV technology allows the compressor to avoid losses due to over-compression and the extra work the motor has to do at partial load, thus saving energy and improving seasonal and partial-load efficiency from 3% to 10%.
Electronic expansion valve
Standard electronic expansion valve including software that is designed and optimized to track cooling load behavior under all operating conditions.
Plate heat exchanger
Brazed corrugated plate heat exchangers made of stainless steel and optimised for use with R290.
Integrated hydronic kit (optional)
Includes inertial buffer tank and hydraulic pumps for a complete, ready-to-install solution.
Smart control system
Continuous monitoring, intelligent adjustment, and remote connection.
Related documents and files
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