Operating conditions
Model
Refrigerant
Type*
GWP**
Temp.glide*** (K)
Lubricant
NTZ
R404A
HFC
3922
0.7/0.3
175PZ POE charged
R507
HFC
3985
0/0
R452A
HFC+HFO
2141
3.9/3.7
*Type: HFC: Hydrofluorcarbon (no chlorine component, "long-term" zero-ODP alternative)
**GWP: Global Warning Potential
***
Temperature glide: difference between saturated vapor temperature and saturated liquid temperature at constant pressure
RGT 20°C
SH = 10K
NTZ / R452A
Operating envelope
Refrigerants and
lubricants
Because of their thermodynamic properties,
R404A and R507 are especially suitable for low
and medium temperature applications. Danfoss
recommends the use of these refrigerants with
NTZ compressors. Note that R404A has a small
temperature glide. It must therefore be charged
in the liquid phase. For most other aspects
however, this small glide may be neglected. R507
is an azeotropic mixture without temperature
glide.
Because of its thermodynamic properties R452A
is suitable for low temperature applications.
R452A has a medium glide of 4K and must
therefore to be charged in the liquid phase.
Maneurop® NTZ compressors are designed and
optimised for refrigerants R404A / R507 / R452A.
The use of hydrocarbons is not authorised in NTZ
compressors.
Only approved refrigerants and lubricants as
listed in below table may be used.
R404A / R507
R452A
FRCC.PC.046.A4.02
16
Application Guidelines
Содержание Maneurop NTZ Series
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