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Room (metres)

20.0 m² · 50.0 m³

Indoor unit position

Max charge in occupied space

3.05 kg

Practical limit 0.061 kg/m³ → 3.05 kg · Flammability formula → 4.60 kg

Machinery room ventilation ≈ 106 m³/h

Mildly flammable: ensure ventilation and avoid ignition sources during service.

Estimate only — confirm with BS EN 378 / BS EN ISO 5149 and the applicable occupancy category and equipment standard.

For guidance and logging assistance only. The inspecting engineer and operating company remain solely responsible for statutory UK compliance, physical testing, and record accuracy.