About the SRC40ZSX-W1
The Mitsubishi Heavy Industries SRC40ZSX-W1 is the high-performance outdoor component of a versatile air conditioning system, part of the esteemed Diamond Inverter series. Engineered for reliability and efficiency, this 4.0kW unit is an excellent choice for climate control in a variety of UK commercial settings, including offices, retail spaces, and restaurants, as well as larger residential properties. It forms the core of a powerful split or multi-split system when paired with a compatible MHI indoor unit.
Delivering a nominal 4.0kW of cooling and a substantial 4.5kW of heating, the SRC40ZSX-W1 is equipped with advanced inverter technology. This allows the compressor to intelligently vary its speed, precisely matching the power output to the room's requirements. The result is exceptionally stable temperature control and significantly lower energy consumption compared to traditional fixed-speed systems, with cooling and heating power consumption rated at just 0.98 kW and 1.13 kW respectively during nominal operation.
One of the unit's standout features is its remarkable operational resilience across a wide range of ambient temperatures. It can provide effective cooling in conditions from as low as -15°C up to a scorching 46°C, and deliver consistent heating even when outside temperatures plummet to -20°C. This ensures comfortable indoor conditions throughout the year, from the coldest winter nights to the most intense summer heatwaves, making it a dependable solution for the unpredictable British climate.
The SRC40ZSX-W1 is also designed with acoustics in mind. The supplier's description highlights its 'extremely low noise levels', a claim backed by sound power ratings of 63 dB(A) for cooling and a sound pressure level as low as 50 dB(A) for heating. This quiet operation makes it suitable for installation in noise-sensitive environments, ensuring minimal disturbance to building occupants, customers, or nearby residents.
In line with modern environmental standards, this outdoor unit uses R32 refrigerant. R32 has a much lower Global Warming Potential (GWP) than older refrigerants like R410A, representing a significant step forward in reducing the carbon footprint of air conditioning. Its superior thermal properties also contribute to the system's overall energy efficiency, requiring a smaller refrigerant charge to achieve the same performance.
Installation flexibility is a key design principle. The unit supports a maximum total pipe length of 30 metres and a vertical height difference of up to 20 metres, providing installers with ample scope to position the indoor and outdoor units optimally, even in complex building layouts. As a multi-split compatible unit, it offers the versatility to connect to multiple indoor units, providing zoned climate control from a single outdoor condenser.
To ensure safety, performance, and legal compliance, it is a mandatory requirement in the UK that this air conditioning unit is installed, commissioned, and serviced by a qualified F-Gas certified engineer. Professional installation is also necessary to validate the manufacturer's warranty.
Applications
- Offices and meeting rooms
- Retail shops and boutiques
- Restaurants, bars, and cafes
- Hotel rooms and public areas
- Gyms and fitness studios
- Open-plan commercial spaces
Installation guidance
- Requires connection to a compatible Mitsubishi Heavy Industries indoor unit.
- Must be installed by a certified F-Gas engineer for legal compliance and warranty.
- Supports a maximum total pipe length of up to 30 metres.
- Allows for a maximum height difference of 20 metres between indoor and outdoor units.
- Utilises standard refrigerant pipe sizes: 1/4 inch liquid line and 1/2 inch gas line.
- Electrical supply required: 230V/1Ph/50Hz with a recommended 16A fuse.
- Outdoor unit should be mounted on a solid, level base or secure wall bracket.
- Additional refrigerant charge of 20 g/m is needed for pipe runs exceeding the 15m chargeless length.
Frequently asked questions
What type of system is the SRC40ZSX-W1?
The SRC40ZSX-W1 is the outdoor unit for a Mitsubishi Heavy Industries air conditioning system. It is designed to be paired with a compatible indoor unit to form a complete single or multi-split system for cooling and heating.
What are the heating and cooling capacities of this unit?
This unit provides a nominal cooling capacity of 4.0 kW and a nominal heating capacity of 4.5 kW, making it suitable for medium-sized commercial or large residential spaces.
What refrigerant does the SRC40ZSX-W1 use?
It uses R32 refrigerant, which is more environmentally friendly and energy-efficient than older refrigerants like R410A due to its lower Global Warming Potential (GWP).
Can I install this air conditioning unit myself?
No. UK regulations require that any system containing F-gases, such as R32, must be installed by a certified F-Gas engineer. This is essential for safety, warranty validation, and legal compliance.
