A2L Refrigerant Safety Check

Tool · 03 of 07 · IEC 60335-2-89:2019

Step 1

Refrigerant & equipment

Refrigerant

A2L refrigerants only — these are the ones with charge limits.

Evaporator

Pick a class-typical evaporator profile, or enter pumpdown manually from your datasheet.

Step 1b

In-room piping

Liquid + suction line lengths inside the conditioned space — between the safety shut-off valves outside the room and the evaporator inside. Sets how much extra refrigerant is at risk on a leak.

Liquid line OD

Liquid line length

Suction line OD

Suction line length

Step 2

Room geometry

Room floor area

m²

The actual room being checked.

Ceiling height

IEC default 2.2 m. Higher ceiling = larger volume = lower risk.

Step 3

Occupancy class

ASHRAE 15 class

Class AHospitals, schools — 50% of m_max Class BOffices, retail, hotels — 100% Class CIndustrial, restricted access — 100%