R290 Fact and Figures

Getting to know R290 refrigerant

R290 Pressures

Pressure to temperature relationship

Pressure in barTemperature in degree celcius

R290 A3 highly flammable gas

A form of ignition

Leaking R290

R290 concentration1.8 to 9.5% room volume

Risk of ignition

Any fans used for ventilation must be A3 refrigerant compliant

Forms of ignition

• Naked flame
• Hot surface above above 370oC
• Static electricity
• Electricity
• Spark creating tools

Mitigate the risk (click on the items)

Leaking R290

R290 concentration1.8 to 9.5% room volume

A form of ignition

Risk of ignition

Keep the concentration levels below minimum concentration level. Option one: Minimum volume needs to be enough that we do not exceed the Lower Flammability Limit of 0.038kg per cubic metre of R290. Option two: ventilation

The Ecodan is a hermitically sealed system and therefore should not be leaking R290 refrigerant. Reason for a leak, physical damage to the Ecodan or parts failure. Place a leak detector on floor beside the Ecodan whenever carrying out repairs to the system This is always good working practice.

Keep all form of ignition at least 1m from the units when working on the Ecodan. Use intrinsically safe electrical equipment.