Lneya Sundi-125 Recirculating Chiller Heater -10°C to 200°C 208V 2.5kW R-404A

Lneya Sundi-125 Recirculating Chiller Heater -10°C to 200°C 208V 2.5kW R-404A

The Lneya SUNDI-125 is a combined refrigeration and heating recirculating temperature control unit (TCU) built by Muxi Guanya Refrigeration Technology (Wuxi, Jiangsu, China), marketed under the LNEYA brand. It circulates a heat transfer fluid through an external process load — such as a reactor jacket, autoclave, mold, or test chamber — maintaining a set-point temperature anywhere from -10°C to 200°C. A single cabinet handles both heating (2.5 kW electric heater) and mechanical refrigeration (R-404A compressor), controlled entirely from a 7" MCGS touchscreen HMI. The unit contains Duratherm XLT-120 heat transfer fluid and has been cleaned and certified free of chemical hazards prior to sale.

Specifications & What's Included

• Model: SUNDI-125 (Lneya / Muxi Guanya Refrigeration Technology)
• Temperature range: -10°C to 200°C
• Heating power: 2.5 kW
• Cooling capacity: 2.5 kW @ 20°C; 1.5 kW @ -5°C
• Circulation pump flow: 20 L/min, 2 bar
• Refrigerant: R-404A, 1.3 kg charge
• Power supply: 208V / 60Hz / 1-Phase
• Control interface: MCGS TPC7062TX(A) 7" embedded touchscreen HMI (24V DC, 300mA)
• Communication/I/O ports: RS485, USB, Ethernet, 4-20mA analog, PT100 temperature input
• Control modes: Local, Remote, Program, Stop, Freerun; Auto Start/Stop timer; 4-20mA or HMI set-point source selectable
• Internal electrical: solid-state relay (200A), transformer, PLC controller modules (DIN rail), 24V DIN rail power supply, circuit breakers
• Fluid ports: two stainless steel circular inlet/outlet fittings (rear panel)
• Pressure gauges: two analog refrigerant gauges (side panel)
• Liquid level indicator: sight glass/indicator tube on side panel with Inflation Level marking
• Exhaust/vent: handwheel exhaust valve on top surface
• Heat transfer fluid: Duratherm XLT-120 (pre-filled, mfg. February 2019, no expiration date)
• Cabinet: stainless steel, floor-standing on four locking casters
• Dimensions: 400 × 600 × 1150 mm
• Factory No.: 6126405 | Production date: June 2017

Applications

Recirculating chiller-heaters of this type are widely used in laboratory and light industrial settings that require precise, dynamic temperature control over a wide range — particularly where both heating and cooling are needed in the same process cycle. Common applications include jacketed reactor temperature control in chemical synthesis and pharmaceutical R&D, temperature cycling of molds and dies in plastics processing, environmental conditioning of test specimens, and temperature control of analytical instruments. The SUNDI series is designed for use with high-boiling heat transfer fluids like Duratherm XLT-120, which extends the usable range above 100°C without pressurization. Units like this were adopted in research labs, pilot plants, and specialty manufacturing lines during the 2010s as an alternative to separate bath circulators and immersion coolers, consolidating heating and refrigeration into one compact cabinet with a single programmable control interface. The onboard RS485, Ethernet, and 4-20mA interfaces allow integration with external PLCs, SCADA systems, or lab automation setups.