ATEX Multi Split Air Conditioner
- Certified for ATEX Zone 2 (gas) and ATEX Zone 22 (dust)
- Operates in ambient temperatures from -20°C to +50°C
- Cooling Capacity: 2.0 kW – 9.0 kW
- Up to 5 indoor units per single outdoor unit
- Wall mount, ceiling suspended, cassette, and ducted indoor models
- 24/7 continuous cooling and heating
- Installation support
- Worldwide shipping
- 5-year warranty
Description
The Ex-M Multi Split Series is an explosion proof multi split air conditioning system engineered for hazardous environments where multiple rooms or compartments need independent climate control from a single outdoor unit. Certified for ATEX Zone 2 (gas, Category 3G) and Zone 22 (dust, Category 3D), this system is built on the proven OEM Daikin multi split platform and expertly converted by Ex-Machinery to meet rigorous European explosion safety standards—without compromising on performance or reliability.
Where conventional setups would require multiple standalone split systems, the Multi Split Series consolidates cooling and heating into one centralized outdoor unit serving up to five indoor units. The result is a cleaner installation footprint, lower peak electrical demand, and simplified maintenance—all critical factors in hazardous area projects where space, power, and downtime are at a premium.
Key Features
The Multi Split Series supports four indoor unit types—wall mount, ceiling suspended, cassette, and ducted—giving engineers and facility managers full flexibility to match the installation to the space. Indoor units are available across a wide capacity range from 2.0 kW to 7.1 kW per unit, with total system cooling output reaching 9.0 kW from a single outdoor unit.
A single inverter-controlled compressor modulates output across all connected indoor units, optimising overall power factor and significantly reducing start-up current compared to running multiple independent systems. This is particularly valuable at sites relying on emergency generators or locations with limited electrical capacity, such as offshore platforms and remote containerized installations.
Performance in Extreme Conditions
Designed for continuous 24/7 operation, the Multi Split Series delivers stable cooling and heating across a wide ambient temperature range of -20°C to +50°C. Whether deployed in desert refineries, tropical offshore facilities, or cold-climate processing plants, the system maintains consistent indoor conditions to protect both sensitive equipment and personnel.
All outdoor units feature anti-corrosion treated heat exchanger fins as standard, with an optional marine upgrade available for offshore and coastal installations. Hermetically sealed swing compressors ensure long-term reliability, even under the thermal stress of round-the-clock operation in harsh climates.
Unique Options
- 3 Configurations: Indoor unit for ATEX Zone 2 with outdoor unit for safe area, indoor unit for safe area with outdoor unit for ATEX Zone 2, or both indoor and outdoor units rated for ATEX Zone 2
- Marine Upgrade: Corrosion protection coating on fins, coils, and/or outdoor casing with AISI 316 stainless steel fasteners
- R410a Retrofit: R32 refrigerant replaced with R410a, including re-labeling
- 50Hz/60Hz upgrade, including re-labeling
- Connection to BMS or Industrial DCS
- Communication PCB for connection to industrial controls
- ATEX Zone 2 or Zone 22 power converter to connect with 3-phase no neutral / 400–460V, 50/60 Hz
- ATEX isolating switch
- Wired remote control in rugged IP66 casing with remote alarm, redundant operation, and set-point functions—available for ATEX Zone 2, Zone 22, or non-hazardous area
- Power split box
- Control cabinet for interface with Air Handling Unit (AHU)
- Offshore corrosion resistance treatment
Optional Spare Parts
- Indoor/Outdoor PCBs
- Fan Motors
- Compressor
- Remote control
Applications
The explosion proof multi split air conditioner is the preferred solution for hazardous area installations where multiple zones need independent temperature control from a single system. Typical applications include:
- Multi-compartment containers (Battery Room + UPS Room)
- Containerized Hydrogen Electrolysers
- Mobile laboratories
- Operator shelters
- Battery rooms
- Production facilities
- Storage facilities
- Refineries
- Chemical plants
- Offshore and onshore platforms
- Control rooms
- Pharmaceutical facilities
- Paint and coating shops
- Fuel storage areas
- Gas compressor stations
- Petrochemical plants
- Food and beverage facilities
Why Choose Ex-Machinery?
With over 20 years of expertise, Ex-Machinery combines advanced engineering with strict safety standards. Key advantages include:
- Expert Advice – Over 20 years of expertise in explosion safety
- Service-Oriented – Responses within one business day
- Short Lead Times – Average delivery within two weeks
- Custom Projects – Solutions customized to your specific needs
- Extended Warranty – Five-year parts warranty
- After-Sales Support – Optional spare parts and remote inspections available
For more information or to request a quotation, contact our sales engineers.
Explosion Safety Specifications (ATEX)
| Specification | Details |
|---|---|
| EU Directive | 2014/34/EU (ATEX114) |
| ATEX marking gas (indoor unit) | II 3G Ex h ic nAC IIB (+H2) T4 Gc |
| ATEX marking gas (outdoor unit) | II 3G Ex h nAC IIB (+H2) T3 Gc |
| ATEX marking dust (indoor unit) | II 3D Ex tc h IIIB T140°C Dc |
| ATEX marking dust (outdoor unit) | II 3D Ex tc h IIIB T150°C Dc |
| Applied standards | EN 60079-0, EN 60079-11, EN 60079-15, EN 60079-31, EN 60079-36, EN 80079-37 |
Available Outdoor Units
| Specification | Ex-M 2MSS40 | Ex-M 2MSS50 | Ex-M 2MSS68 | Ex-M 3MSS52 | Ex-M 3MSS68 | Ex-M 4MSS80 | Ex-M 5MXM90 |
|---|---|---|---|---|---|---|---|
| Max. Connectable Indoor Units | 2 | 2 | 2 | 3 | 3 | 4 | 5 |
| Cooling Capacity (kW) | 4.0 | 5.0 | 6.8 | 5.2 | 6.8 | 8.0 | 9.0 |
| Heating Capacity (kW) | 4.2 | 5.6 | 8.6 | 6.8 | 8.6 | 9.6 | 10.0 |
| Operation Range – Cooling | -10~46°C | -10~50°C | -10~50°C | -10~50°C | -10~50°C | -10~50°C | -10~50°C |
| Operation Range – Heating | -15~24°C | -20~24°C | -20~24°C | -20~24°C | -20~24°C | -20~24°C | -20~24°C |
| Power Supply | 1~/50/220-240 V | ||||||
| Refrigerant | R32 (R410a optional) | ||||||
| Compressor | Hermetically sealed swing compressor | ||||||
| Fan | Propeller fan (horizontal discharge), quantity 1 | ||||||
| Capacity Control | Inverter controlled (variable) | ||||||
Outdoor Unit Dimensions
| Specification | 2MSS40 | 2MSS50 | 2MSS68 | 3MSS52 | 3MSS68 | 4MSS80 | 5MXM90 |
|---|---|---|---|---|---|---|---|
| HxWxD (mm) | 552x852x350 | 552x852x350 | 734x974x408 | 734x974x408 | 734x974x408 | 734x974x408 | 734x974x408 |
| Unit Weight (kg) | 36 | 41 | 60 | 57 | 62 | 67 | 68 |
| Shipping HxWxD (mm) | 613x906x402 | 613x906x402 | 820x1050x480 | 820x1050x480 | 820x1050x480 | 820x1050x480 | 820x1050x480 |
| Shipping Weight (kg) | 39 | 44 | 66 | 63 | 67 | 73 | 73 |
Outdoor Unit Piping Connections
| Specification | 2MSS40 | 2MSS50 | 2MSS68 | 3MSS52 | 3MSS68 | 4MSS80 | 5MXM90 |
|---|---|---|---|---|---|---|---|
| Liquid OD (mm) | 6.35 (qty 2) | 6.35 (qty 2) | 6.35 (qty 2) | 6.35 (qty 3) | 6.35 (qty 3) | 6.35 (qty 4) | 6.35 (qty 5) |
| Gas OD (mm) | 9.5 (qty 1) | 9.5 (qty 1) | 9.5 (qty 1) | 9.5 (qty 1) | 9.5 (qty 1) | 9.5 (qty 1) | 9.5 (qty 2) |
| Gas 2 OD (mm) | – | 12.7 (qty 1) | 12.7 (qty 1) | 12.7 (qty 2) | 12.7 (qty 2) | 12.7 (qty 1) | 12.7 (qty 1) |
| Gas 3 OD (mm) | – | – | – | – | – | 15.9 (qty 2) | 15.9 (qty 2) |
| Drain OD (mm) | 16 (inner diameter of connecting hose) | ||||||
| Piping Length OU–IU (m) | Min. 3 – Max. 20 | Min. 3 – Max. 20 | Min. 3 – Max. 25 | Min. 3 – Max. 25 | Min. 3 – Max. 25 | Min. 3 – Max. 25 | Min. 3 – Max. 25 |
| Level Difference OU–IU (m) | Max. 15 | ||||||
| Level Difference IU–IU (m) | Max. 7.5 | ||||||
| Total Pipe Length (m) | 30 | 30 | 50 | 50 | 50 | 70 | 75 |
Available Wall Mount Indoor Units
| Specification | Ex-M CS20W | Ex-M CS25W | Ex-M CS35W | Ex-M CS42W | Ex-M CS50W | Ex-M CS60W | Ex-M CS71W |
|---|---|---|---|---|---|---|---|
| Cooling Capacity (kW) | 2.0 | 2.5 | 3.5 | 4.2 | 5.0 | 6.0 | 7.1 |
| Heating Capacity (kW) | 2.5 | 2.8 | 4.0 | 5.4 | 5.8 | 7.0 | 8.2 |
| Energy Class – Cooling | A+++ | A+++ | A+++ | A++ | A++ | A++ | A++ |
| Energy Class – Heating | A+++ | A+++ | A+++ | A++ | A++ | A+ | A+ |
| SEER | 9.47 | 9.47 | 9.25 | 8.11 | 7.80 | 6.90 | 6.20 |
| SCOP/A | 5.2 | 5.2 | 5.2 | 5.0 | 4.8 | 4.3 | 4.1 |
| Fan Type | Cross Flow Fan | ||||||
| Refrigerant | R-32 (R410a optional) | ||||||
| Air Filter | Removable / Washable | ||||||
Wall Mount Dimensions
| Specification | CS20W / CS25W | CS35W / CS42W / CS50W | CS60W / CS71W |
|---|---|---|---|
| HxWxD (mm) | 298 x 804 x 252 | 298 x 997 x 292 | 298 x 997 x 292 |
| Unit Weight (kg) | 11.5 | 14.5 | 14.5 |
Available Ceiling Suspended Indoor Units
| Specification | Ex-M CS35S | Ex-M CS50S | Ex-M CS60S |
|---|---|---|---|
| Cooling Capacity (kW) | 3.4 | 5.0 | 5.7 |
| Heating Capacity (kW) | 4.0 | 6.0 | 7.2 |
| Energy Class – Cooling | A++ | A+ | A+ |
| Energy Class – Heating | A+ | A | A |
| SEER | 6.24 | 5.92 | 6.08 |
| SCOP/A | 4.43 | 3.86 | 3.87 |
| Fan Type | Sirocco Fan | ||
| Fin Type | ML fin (Anti Corrosion Hydrophilic) | ||
| Refrigerant | R-32 (R410a optional) | ||
| Air Filter | Resin Net | ||
| Power Supply | 1~/50/60/220-240/220 | ||
Ceiling Suspended Dimensions
| Specification | CS35S / CS50S | CS60S |
|---|---|---|
| HxWxD (mm) | 235 x 960 x 690 | 235 x 1,270 x 690 |
| Unit Weight (kg) | 26 / 27 | 32 |
Available Cassette Indoor Units
| Specification | Ex-M CS35C | Ex-M CS50C | Ex-M CS60C |
|---|---|---|---|
| Cooling Capacity (kW) | 3.5 | 5.0 | 5.7 |
| Heating Capacity (kW) | 4.2 | 6.0 | 7.0 |
| Energy Class – Cooling | A++ | A++ | A++ |
| Energy Class – Heating | A++ | A+ | A+ |
| SEER | 6.35 | 6.54 | 6.40 |
| SCOP/A | 4.90 | 4.30 | 4.20 |
| Fan Type | Turbo Fan | ||
| Fin Type | Cross fin coil (multi slit fins and Hi-XA tubes) | ||
| Refrigerant | R-32 (R410a optional) | ||
Cassette Dimensions
| Specification | CS35C / CS50C / CS60C |
|---|---|
| HxWxD (mm) | 204 x 840 x 840 |
| Unit Weight (kg) | 18 / 19 / 19 |
Available Ducted Indoor Units
| Specification | Ex-M CS35D | Ex-M CS50D | Ex-M CS60D |
|---|---|---|---|
| Cooling Capacity (kW) | 3.4 | 5.0 | 5.7 |
| Heating Capacity (kW) | 4.0 | 5.5 | 7.0 |
| Energy Class – Cooling | A++ | A++ | A+ |
| Energy Class – Heating | A+ | A+ | A+ |
| SEER | 6.23 | 6.27 | 5.91 |
| SCOP/A | 4.07 | 4.06 | 4.01 |
| Fan Type | Sirocco Fan | ||
| External Static Pressure | 30 Pa | ||
| Refrigerant | R-32 (R410a optional) | ||
| Air Filter | Resin Net | ||
| Power Supply | 1~/50/60/220-240/220 | ||
| Drain-Up Height | 625 mm | ||
Ducted Unit Dimensions
| Specification | CS35D / CS50D | CS60D |
|---|---|---|
| HxWxD (mm) | 245 x 700 x 800 | 245 x 1,000 x 800 |
| Unit Weight (kg) | 28.0 | 35.0 |
