Application Ranges; Use Of Flammable Refrigerants Of The A2L Safety Group (E.g. R1234Yf); Compressor And Refrigeration System Requirements - Bitzer CSH6553-35Y Instructions De Service

3 Application ranges

Permitted refrigerants
(Further refrigerants
upon request)
Oil charge
Application limits
Tab. 1: Application ranges of CS. compressors
The use of R404A and R507A and other blends re-
quires individual consultation with BITZER.
WARNING
Risk of bursting due to counterfeit refrigerants!
Serious injuries are possible!
Purchase refrigerants only from reputable man-
ufacturers and reliable distributors!
Risk of air penetration during operation in the vacuum
range
NOTICE
!
!
Potential chemical reactions as well as in-
creased condensing pressure and rise in dis-
charge gas temperature.
Avoid air penetration!
WARNING
A critical shift of the refrigerant ignition limit is
possible.
Avoid air penetration!
3.1 Use of flammable refrigerants of the A2L safety
group (e.g. R1234yf)
Information
The information in this chapter about the use of
refrigerants of the A2L safety group refer to
European regulations and directives. In regions
outside the EU, observe the local regulations.
Information
For refrigerants of the A3 safety group, e.g.
R290 propane or R1270 propylene, specific
compressor designs can be delivered upon re-
quest. In this case, also observe the additional
Operating Instructions.
This chapter describes and gives explanations to the
additional residual risks originating from the com-
pressor when using refrigerants of the A2L safety
30
R134a, R407C, R450A, R513A,
R1234yf, R1234ze(E)
CSH: BSE170
CSW: BSE170L
CSH: see brochure SP-171 and BITZER Software
CSW: see brochure SP-172 and BITZER Software
R22
B320SH
group. This information helps the manufacturer of the
system to make the risk assessment for the system.
This information may in no way replace the risk assess-
ment for the system.
Design, maintenance and operation of refrigeration sys-
tems using refrigerants of the A2L safety group are
subject to particular safety regulations.
When installed according to these Operating Instruc-
tions and in normal operation conditions without mal-
functions, the compressors are free from ignition
sources that could ignite the flammable refrigerants
R1234yf and R1234ze(E). They are considered as
technically tight. No ignition source assessment is
available for other refrigerants of the A2L safety group.
Information
When using flammable refrigerants, attach the
adhesive label with the warning symbol from the
terminal box to the oil separator.
Refrigerant burning in the terminal box may only hap-
pen if several very rare errors occur at the same time.
The probability of this event occurring is extremely low.
When suspecting burnt refrigerant in the terminal box,
wait at least 30 minutes before opening it. According to
the present knowledge, this is the time needed for the
toxic combustion products to be degraded. It is neces-
sary to use appropriate, acid-resistant gloves. Do not
touch moist residues, but let them dry, because they
may contain dissolved toxic substances. Never inhale
evaporation products. Let the concerned parts be
cleaned by trained staff or, if the parts are corroded,
dispose of them properly.
3.1.1 Compressor and refrigeration system
requirements
The specifications are established in standards (e.g.
EN 378). In view of the high requirements and product
liability, it is generally recommended to carry out the
SB-170-7