Advanced Safety Framework for R32 in Panasonic Mini-VRF Systems
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 .The restrictions imposed on the refrigerant charges in a system due to the flammability of R32 are more severe than those imposed by toxicity, ensuring that normal installations remain far below any harmful concentration. The indoor unit is safe to use, with the leak detector/alarm available as an optional additional safety feature.
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
System Configuration
This sensor includes an integrated alarm buzzer and can connect to a central alarm system. It links to the indoor unit’s remote control terminals and is compatible with any VRF remote controllers, 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
A wide range of indoor units, either supporting Panasonic’s optional R32 leak detector alarm or having built-in detectors, provides great flexibility for all types of installation. The optional R32 Leak Alarm CZ-CGLALC1 (for sensor-integrated indoor units) is also available.
U2 Type 4-Way Cassette
Y3 Type 4-Way Mini Cassette
Y3 Type (B) 4-Way Mini Cassette
K3 Type Wall Mounted
R32 R410A F3 Type Mid Static Adaptive Ducted
R32 R410A M2 Type Slim Ducted
P2 Type Floor Standing
R2 Type Concealed Floor Standing