Hi All
Can someone advise me regarding the paperwork for the chiller below:

I have a water chiller with 2 refrigerant circuits - each circuit contains 16kg of refrigerant running on R 407c .
After leak checking the equipment I provide the client with a separate certificate for each circuit, therefore 2 log sheets,- this is done every 12months

The client has informed me that I should be doing a single log sheet every 6 months because the charge is 32kg which would be 56.77 tonne EQ CO2.

Have I been doing the log sheets incorrectly?

Thanks Bob