There are several key points that need to be considered in the development and implementation of nonresidential refrigerant charge adjustment measures: Savings for systems with TXV control are minimal, so systems with TXV control shall not be included in RCA programs. Savings for systems that are overcharged are minimal, so systems that are found to be overcharged during field work are not eligible for RCA programs. Systems that are undercharged by less than 4% are not eligible for RCA programs. For multi-circuit systems, the impacts in the DEER database are normalized by the tonnage of the circuit that is corrected by a refrigerant charge adjustment, not the tonnage of the entire system.
There are several key points that need to be considered in the development and implementation of nonresidential refrigerant charge adjustment measures: Savings for systems with TXV control are minimal, so systems with TXV control shall not be included in RCA programs. Savings for systems that are overcharged are minimal, so systems that are found to be overcharged during field work are not eligible for RCA programs. Systems that are undercharged by less than 4% are not eligible for RCA programs. For multi-circuit systems, the impacts in the DEER database are normalized by the tonnage of the circuit that is corrected by a refrigerant charge adjustment, not the tonnage of the entire system.