● Hazardous areas with explosive gas mixtures: Zone 1, Zone 2.
● Explosive gas mixtures: IIA, IIB, IIC.
● Hazardous areas with explosive dust: Zone 20, Zone 21, Zone 22.
Application Scenarios
● Hazardous areas with explosive gas mixtures: Zone 1, Zone 2.
● Explosive gas mixtures: IIA, IIB, IIC.
● Hazardous areas with explosive dust: Zone 20, Zone 21, Zone 22.
Product Features
1. High-efficiency heat exchange: The surface cooler uses high-quality copper tubes with hydrophilic aluminum fins, double-hem structure, and overall mechanical tube expansion process, ensuring optimal contact between copper tubes and aluminum fins, high heat exchange efficiency, and low air resistance.
2. Low noise and energy saving: The low-noise explosion-proof motor and low-noise explosion-proof centrifugal fan are optimally matched with the unit, combined with well-insulated sound-absorbing materials, ensuring low-noise and energy-efficient operation.
3. Reliable operation: Equipped with an explosion-proof single-phase three-speed motor and high-precision maintenance-free ball bearings for long service life; the fan shaft is nickel-plated for durability.
4. Dry water pan: The water pan is formed by integrated stamping in one step, and the insulation is molded as a whole without welds. The unique drainage channel design ensures smooth drainage without water leakage.
5. Multiple product types, including horizontal concealed, horizontal exposed, vertical exposed, and cassette styles; complete specifications with nine models available; external static pressure options include standard and high static pressure.
6. Uses the latest explosion-proof technology, making the unit safer and more reliable.
Horizontal Concealed (2-Row Tube)
Horizontal Concealed (2-Row Tube)
Ceiling Type
Notes:
1. Unit design complies with ATEX standard:
2. Nominal cooling condition: Indoor dry-bulb temperature 27/19.5°C, inlet/outlet water temperature 7/12°C. Nominal heating condition: Indoor dry-bulb temperature 21°C, inlet/outlet water temperature 60°C.
3. Noise values are measured in a full anechoic chamber at the corresponding wind speeds.
4. Unit parameters are subject to change due to product improvements without prior notice. Please refer to the nameplate for specific parameters.
CNWINNEX explosion-proof systems are widely deployed in oil & gas, petrochemicals, pharmaceuticals, ports & terminals, mining, power generation, offshore platforms, and other areas where flammable gases or dusts are present. Typical applications include control room climate control, hazardous area logistics and access management, video surveillance & security, pressurized analyzer shelters, robotic inspection, as well as custom explosion-proof enclosures and system integration.
An explosion-proof air conditioner is a specialized HVAC unit designed for hazardous environments where flammable gases, vapors, or combustible dusts are present (e.g., petrochemical plants, gas stations, paint booths, pharmaceutical labs).
The most critical difference from a standard air conditioner lies in “active ignition prevention.” Standard units generate tiny sparks during normal operation – such as when relays open/close, compressors start/stop, or circuits make/break. While safe in normal air, these sparks can be deadly in an explosive atmosphere.
CNWINNEX’s explosion-proof design is based on the T4 temperature class. For high-temperature regions such as the Middle East or areas with extreme summer heat, we offer custom units rated for ambient temperatures up to 60°C (140°F) , ensuring reliable operation without overload in harsh tropical climates. For cold regions, we offer custom units rated for ambient temperatures as low as -50°C (-58°F) , guaranteeing safe operation in extreme arctic conditions.
The explosion-proof rating of CNWINNEX air conditioners is:
Ex 2 G D Ex db ib mb IIB T4 Gb / Ex 2 G D Ex db ib mb IIC T4 Gb / Ex ib mb tb IIIC T130°C Db
●For Gas (G): Ex db ib mb IIC T4 Gb
Suitable for IIC gas groups (including hydrogen, acetylene, etc.), using flameproof (db), intrinsic safety (ib), and encapsulated (mb) combined protection. Temperature class T4 (max surface temperature ≤135°C), Equipment Protection Level Gb.
●For Dust (D): Ex ib mb tb IIIC T130°C Db
Suitable for IIIC conductive dusts, using intrinsic safety (ib), encapsulation (mb), and dust-tight (tb) protection. Maximum surface temperature 130°C, Equipment Protection Level Db.
CNWINNEX products comply with international explosion-proof certification standards such as ISO, CNEX, ATEX, IECEx, SAA, EAC, ensuring safe use in different countries and regions., and BV or DNV (for offshore applications) . Depending on the product type and zone classification, we offer various protection concepts including Ex d, Ex e, Ex ib, and Ex nA, with ingress protection up to IP66/IP67, ensuring safe and compliant operation in hazardous environments worldwide.
Absolutely. Explosion-proof Custom Engineering is our sixth core business. From non-standard Ex components (special material junction boxes, intrinsically safe sensors, etc.) to integrated Ex systems (skid-mounted control rooms, pressurized cabins, legacy equipment retrofitting), we provide full-process custom services covering conceptual design, 3D simulation, compliance certification, manufacturing, and delivery. Simply share your operating parameters and functional needs, and we will engineer a dedicated explosion-proof safety solution for you.
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