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RG66007967 - Rev 02
WARNING
Since R410A is a binary blend of R32 and R125, it is advisable to charge with refrigerant in the liquid
phase to ensure the correct percentage of the 2 components.
Charge through the charging inlet provided between the expansion valve and evaporator inlet.
ATTENTION
A unit that was originally charged with R410A in the factory cannot be charged with other
refrigerants.
WARNING
It is recommended to read the safety data sheet (MSDS) before using R-410A (see Chapter 12).
TOXICITY: R-410A can be safely used in all applications for which it is intended, according to
the processed data of the “Program for Alternative Fluorocarbon Toxicity Testing” (PAFT1).
LEAKS: the area must be immediately evacuated if there is a constant leak of R-410A gas.
The gases concentrate near the floor, thereby restricting the availability of oxygen. Once
evacuated, the area must be ventilated with fans or blowers in order to circulate the air at
floor level.
FLAMMABILITY: according to the 34 ASHRAE Standard, R-410A is classified in safety group
A1, i.e. it is not flammable at 1 atm of pressure (101.3 kPa) and 18°C.
CATEGORY: the refrigerant is a non hazardous category II fluid.
WARNING
All the temperatures on the perimeter of the operating areas can only be reached as transients
and if the unit runs beyond these limits for a prolonged time, the software on board will
implement corrective actions to restore the unit within the operating limits.
The unit is pre-charged with R410A before leaving the factory, however, the charge must be verified during the start-up
phase.
The diagrams below indicate the operating limits of the units and the flow temperature that the unit can supply according
to the outdoor temperature can be obtained.
The example in the graph below shows that the unit can obtain a flow temperature of 35°C up to a maximum of 60°C with
an outdoor temperature of 10°C.
3.7
OPERATING LIMITS
