Winnex Air Marine Water Cooled Deck Unit

Winnex Air marine water cooled deck unit delivers a streamlined system design for marine applications. The self-contained cabinet type comfort air conditioner improves system rationality and simplifies operation and maintenance. Custom explosion-proof units are available. The cabinet housing can be GI galvanized steel or SS316L stainless steel.

Product Features

Multiple compressors with independent refrigerant circuits reduce operational costs. Scroll, screw or reciprocating compressors can be flexibly configured according to load demand to maintain high part-load efficiency. We adopt proven, high-efficiency and durable compressor technology. Fewer moving parts and stable refrigerant flow ensure quiet operation. Each compressor is fitted with an independent refrigerant circuit and separate fuse. Suction and discharge pressure sensors are installed on each circuit for monitoring and diagnostics. Twin-screw compressors deliver superior efficiency.

High Reliability

• Independent refrigerant circuits minimize unit shutdown risk.

• Multiple compressors serve as mutual backups.

• Complete protection functions guarantee stable unit operation.

High Efficiency Condenser

The condenser heat exchanger adopts state-of-the-art heat transfer surface design, combining high efficiency and compact footprint. Optimized water-side and refrigerant-side design reduce energy consumption and fouling factor. B10 or B30 anti-corrosion cupronickel tubes are optional for seawater cooled deck units. Seawater condensers can be equipped with SS316L end covers and tube sheets for corrosion resistance and extended service life.

Refrigerant Circuit

Each unit is equipped with independent refrigerant circuits. All piping is copper tube with brazed joints. Liquid lines include field-mounted shut-off valves, and oil charging ports are arranged on each condenser circuit. Suction line connections are fitted on suction valves of every refrigeration circuit. Filter driers and sight glasses are installed on each refrigerant circuit.

Centrifugal Fan & Motor

The unit adopts double inlet backward-curved centrifugal fans. All impellers are statically and dynamically balanced to ISO1940 and AMCA 204-G2.5 standards, with further fine balancing after fan assembly. Bearings are deep groove ball bearings with double-sided sealing and adapter sleeves, or spherical roller bearings. Motors are totally enclosed fan cooled type, insulation class F, IP55 protection rating. Specially designed base frame enables simple and flexible installation and maintenance for fans and motors. Fans are mounted on vibration isolation springs, with canvas flexible connectors at inlet to minimize vibration and noise transmission. The base frame is fully isolated from unit casing to avoid internal cabinet vibration.

Cooling & Heating Coils (Stainless Steel Electric Heating Optional)

Coils are designed by professional software, available in 4-row or 6-row split configuration. For dual-system units, each refrigerant circuit covers the full coil surface. When any compressor starts, coils work independently with even distribution across each circuit. DX cooling coils are ARI certified, made of seamless copper tubes mechanically expanded onto aluminium or copper fins. Blygold coating or electrophoretic coating can be selected to protect fins under long-term marine exposure.

Structure & Painting

The heavy-duty galvanized steel structure is powder coated. Two or three layers of coating are applied to steel or stainless steel frame exterior. The base is hot-dip galvanized steel coated with durable mechanical paint. The AHU frame with anti-corrosion coating is robust with excellent thermal insulation. High-quality gaskets offer long service life and reliable sealing. Double skin insulated panels are made of pre-coated galvanized steel (SS316L optional). High-density rigid CFC-free polyurethane foam is injected between sheets to form high-strength insulated panels. Panels are fixed to frame with screws or spring latches. Standard panel thickness 25~50mm, density 45~50kg/m³.

Control Panel & Safety Protection

DX condensing unit and AHU are controlled by microprocessor or PLC control cabinet. The control panel enables system operation control and real-time monitoring of system status, sensors, actuators, relays and switches. The screen displays all operating parameters in detail. Protection functions include low temperature, low oil pressure, refrigerant high/low pressure, electric leakage, compressor overload, over/under voltage and phase loss protection.

Factory Test

Every unit undergoes strict factory performance test before shipment, and factory test reports can be provided upon request. Factory tests include balance check of complete fan assembly, compressor operation inspection, full functional test of all electrical components and safety interlocks (including correct control sequence), leak test of all refrigerant circuits and final unit performance verification.

Specifications Cooling capacity: 35~240kW Power supply: AC380V/440V, 50Hz/60Hz, 3Ph Refrigerant: R407C, R404A, R410A, R134A etc.