Panasonic S-3650PU3E PACi NX 3.6–5.0kW 4-Way 90x90 Cassette Indoor Unit – nanoe X, R32
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The Panasonic S-3650PU3E is a 3.6–5.0kW PACi NX 4-way 90 × 90 cassette – the workhorse commercial indoor unit for open-plan offices, retail floors, restaurants and classrooms.
A high-performance turbo fan and optimised heat exchanger path give efficient, even air distribution from all four sides, and the optional EcoNavi sensor cuts waste by responding to occupancy. nanoe X (Generator Mark 1) is built in, with a dry-operation internal cleaning cycle to keep the unit hygienic. In slow fan mode it runs down to 27 dB(A).
Installation is straightforward thanks to a lightweight build, simplified piping, an integrated drain pump and 3-wire connection. The optional air-intake chamber (CZ-FDU3 + CZ-ATU2) allows high-volume fresh air, and the CZ-RTC6BL Bluetooth controller makes commissioning quick.
Key features
- 4-way airflow for 900 × 900mm grid ceilings
- High-performance turbo fan and optimised heat exchanger
- nanoe X air purification with internal cleaning function
- Integrated drain pump and 3-wire connection
- Quiet operation down to 27 dB(A)
- Optional EcoNavi sensor and fresh air intake chamber
- CONEX compatible; optional commercial Wi-Fi adaptor
- Low-GWP R32 refrigerant
Specifications
- Model: S-3650PU3E
- Capacity range: 3.6–5.0kW
- Ceiling grid: 900 × 900mm
- Decorative panel: Sold separately
- Drain pump: Integrated
- Sound level (min): 27 dB(A)
- Compatible outdoor units: PACi NX Standard and Elite
- Air purification: nanoe X Generator Mark 1
- Refrigerant: R32
Good to know
This is a split-system component that contains or connects to R32 refrigerant, so it must be installed and commissioned by an F-Gas registered engineer. It is supplied as a single unit – pair it with a compatible Panasonic outdoor/indoor unit to make a complete system. Supplied without decorative panel; panel and wired controller are sold separately.
Genuine Panasonic product. All prices shown include VAT.
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Specifications
Specifications
Compact and lightweight design
With a low weight of just 21 kg, this ventilation unit can be installed quickly and safely by a single installer. Its space-saving footprint makes the DucoBox Energy Comfort perfectly suited for small plant rooms and confined technical areas.
Software-controlled left/right configuration
The unit is designed for maximum installation flexibility. Left- or right-hand airflow orientation is adjusted entirely via software, eliminating the need for mechanical modifications. This is made possible by an innovative patented double bypass system.
Automatic calibration
Using constant pressure calibration technology, the AUTO calibration function reduces commissioning time by up to 50%. In real-world installations, this can translate into lower labour costs and faster system setup.
High energy efficiency
Advanced dynamic air filtration ensures consistently high heat recovery efficiency. When combined with optional intelligent demand control based on CO₂ and humidity sensors, the system delivers excellent indoor air quality while minimising energy consumption.
Smart copy function for fast commissioning
An integrated software-level copy feature allows installers to duplicate settings and parameters from one unit to another. This is especially valuable for multi-unit or repeated housing projects, ensuring consistent performance and significantly reducing setup time.
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