General guidelines
In addition to the known limits for HFC refrigerants for carrying out leak checks, leak checks must now be carried out for filling quantities of 1 kg HFO refrigerant or more (2 kg for hermetically sealed systems).
From now on, leak tests must be carried out on chillers with the refrigerant R-1234ze with a filling quantity of ≥ 1kg . The specialist company carrying out the inspection must also have F-Gas certification.
Exception: For hermetically sealed devices installed in residential buildings, no leak checks need to be carried out if the filling quantity is < 3 kg.
In the table below you can see the prescribed frequency of leak checks for each filling quantity of the respective refrigerant type:
Specifications after repair
As before, the final leak test after a repaired leak must be carried out within one month of the repair.
NEW: The minimum time interval between repair and the final leak test must now be at least 24 hours (previously the test could be carried out directly after the repair).
The inspection does not necessarily have to be carried out on site, but can also be carried out using an indirect inspection method through our various offsite solutions, such as Daikin on Site (chillers), Daikin Cloud Plus (VRV), Web Checker (VRV or Rooftop) or DCS Residential (selected split systems). These indirect inspection methods are permitted for any preventive and time-prescribed leak inspection.
This regulation applies immediately to all systems, regardless of the type of refrigerant, after repairing a leak.