User Guide
Table Of Contents
- Compressor model designation
- Danfoss scroll compression principle
- Features
- Technical specifications
- Dimensions
- Electrical data, connections and wiring
- Approval and certifications
- Operating conditions
- System design recommendations
- Specific application recommendations
- Sound and vibration management
- Installation
- Compressor handling and storage
- Compressor mounting
- Compressor holding charge
- System cleanliness
- Tubing
- Brazing and soldering
- System pressure test
- Leak detection
- Vacuum evacuation and moisture removal
- Filter driers
- Refrigerant charging
- Insulation resistance and dielectric strength
- Commissioning
- Oil level checking and top-up
- Ordering information & packaging
- Accessories
Application guidelines
30 AB237986441643en-US0701
SY240 to 380
R407C
at DEW temperature
SZ084 to 185 & SY185
R407C
at DEW temperature
Application envelopes at
mean temperatures
Refrigerant R407C is a zeotropic mixture,
which causes a temperature glide in both the
evaporator and condenser. When discussing
evaporating and condensing temperatures
therefore, it is important to indicate whether
these are DEW point values or MEAN point
values. In the gure below, the dashed lines
reect constant temperature and do not
correspond with the constant pressure lines. For
a given cycle, the MEAN point temperatures are
typically about 3.5° to 5.4°F lower than DEW point
temperatures. In these Selection and Application
Guidelines, Danfoss Commercial Compressors
displays temperatures as DEW point values.
The performance tables for R407C are also based
on DEW point values.
80
90
100
110
120
130
140
150
160
-10 0 10 20 30 40 50 60
Condensing temperature (°F)
Evaporating temperature (°F)
Dew temperature conditions
S.H. = 54°F SUPERHEAT
S.H. = 20°F
80
90
100
110
120
130
140
150
160
-10 0 10 20 30 40 50 60 70
S.H. = 54 °F SUPERHEAT
S.H. = 20°F
Condensing temperature (°F)
Evaporating temperature (°F)
Dew temperature conditions
Operating conditions