Belimo X8028M.2AAA3 - two-way expansion valve

Belimo X8028M.2AAA3 two-way expansion valve

Hermetically sealed expansion valve for continuous capacity control in refrigeration and air-conditioning applications. According to the documentation, it is suitable for CFC, HFC, HFO and R290 refrigerants, as well as A3 safety class refrigerants (ISO 817). When using flammable refrigerants, the user must check the product's suitability for the specific installation.

Key features and specifications

• Kvs: 4.8 m³/h; connection: ODF 28-28 mm internal solder sleeve.
• PN pressure rating: 50; permissible operating pressure ps: 5000 kPa; maximum differential pressure ∆pmax: 3500 kPa.
• AC/DC 24 V supply; operating power consumption 1.5 W; 2.6 VA for cable sizing.
• Control by bipolar stepper motor signals (4 wires) from a superheat controller; MP-Bus communication.
• Configuration via smartphone with the xBALL Syncra app.
• Motor running time: 15 s / 90°; safety function running time: 15 s / 90°.
• Bubble-tight, leakage rate class A (EN 12266-1); equal-percentage flow characteristic (VDI/VDE 2173).
• Medium temperature: -20...70°C; with ZCQ-E: 70...120°C. Ambient temperature: -30...50°C.
• IEC/EN IP54 degree of protection; IEC/EN protection class III, Safety Extra-Low Voltage (SELV).
• Body: CW617N brass; closing element: AISI 316L stainless steel.
• Installation with the spindle from vertical to horizontal; installation with the spindle pointing downwards is not permitted.
• Maintenance-free design; manual override using the detached actuator.