Panasonic R32 Refrigerant Leak Detector
Safe Usage of R32 in Panasonic R32 Mini-VRF systems
R32 being a mildly flammable refrigerant (category A2L), the design and installation of systems operating with R32 must comply with the relevant refrigerant safety regulations. Those regulations which apply to our R32 Mini-VRF systems and the unique “incorporated circulation air flow” method is “IEC 60335-2-40 (ed. 6.0) for safety and flammability.“
The restrictions imposed on the refrigerant charges in a system due to the flammability of R32 are more severe than those imposed by toxicity. Therefore, in standard applications using our R32 Mini-VRF systems, toxic concentrations cannot occur.
Incorporated Circulation Airflow – Mitigation Method Applied by Panasonic
In applications where the refrigerant charge of a system exceeds the limits allowed for a specific room size, Panasonic R32 Mini-VRF systems offer the so-called “incorporated circulation air flow method” in combination with an R32 leak detector, which substantially helps considerably to overcome such limitations. As soon as a leak occurs and is detected by the sensor, the detector triggers an alarm, the compressor stops and the indoor unit fan is set to high speed to circulate the air in the room, thus diluting the R32 concentration.
Example of a 10.6 kW Cassette Model Installed at
2.2 m Height
a) Application without leak detector nor circulation air flow
The refrigerant charge of the system, in relation to the floor area, must lie within the blue zone. Installation outside this zone is not allowed.
b) Application with leak detector and circulation air flow
The refrigerant charge of the system in relation to the floor area can be considerably increased due to the circulation air flow.
Example of a 10.6 kW Adaptive Ducted Model
Installed Vertically at Floor Level
Optional Panasonic R32 Refrigerant Leak Detector CZ-CGLSC1
Panasonic’s incorporated circulation air flow method is a remarkable way to comply with the mitigation rules specified in the standards and regulations, thus allowing for higher system refrigerant charges per room area. To trigger the circulation airflow, R32 leak detectors are required. Panasonic has developed 2 types of leak detectors, an external, optional detector, as well as 2 integrated sensors for the flexible Adaptive Ducted model to assure a positive detection in case of a refrigerant leak.
System Configuration
This optional leakage detection sensor has an integrated alarm buzzer and can output a signal to a central alarm system in the building. The device is connected to the remote control terminals of the indoor unit and can be used in combination with any of the Panasonic VRF remote controllers, either wired or wireless.
*Only one remote controller can be connected with the Panasonic R32 refrigerant leak detector.
Compatible with a large range of indoor units
Wide range of indoor units, either supporting Panasonic’s optional R32 leak detector alarm or having built-in detectors provide a great flexibility for all types of installation.
U2 Type 4-Way Cassette
Y3 Type 4-Way Mini Cassette
K2 Type Wall Mounted
M1 Type Slim Low Static Ducted
R32 F3 Type Mid Static Adaptive Ducted