Refrigeration & Air Conditioning
> Refrigeration & Air Conditioning
> Products
> Products & Applications In Focus
> News
> Technical Literature
> Software
> Education and Training
> Market Segments We Serve
> Refrigerants & Energy Efficiency
> Exhibitions & Events
> About Us

Follow us:

Danfoss on Facebook Danfoss on Twitter Danfoss on LinkedIn Danfoss on YouTube
 
 
 
 
 
Danfoss Logo

Compass Software Guidelines

Please note that all values calculated and components selected by this software must be verified by the user. The user must also ensure that installation conditions comply with professional standards and legislation before making a selection.

Please also refer to our disclaimer.
1. Rating Conditions

EN12900 conditions
  • Capacity calculated in Watt
  • 50 Hz
  • SI units
 ARI540 conditions
  • Capacity calculated in btu/h
  • 60 Hz
  • Imperial units
Low Back Pressure (LBP) -35/40/20/Sub 0
Evaporating temperature: -35°C
Condensing temperature: +40°C
RGT: 20°C
Subcooling: 0		 -25/105/40/Sub 0
Evaporating temperature: -25°F
Condensing temperature: +105°F
RGT: 40°F
Subcooling: 0
Medium Back Pressure (MBP) -10/45/20/Sub 0 Evaporating temperature: -10°C
Condensing temperature: +45°C
RGT: 20°C
Subcooling: 0		 20/120/65/Sub 0
Evaporating temperature: 20°F
Condensing temperature: +120°F
RGT: 65°F
Subcooling: 0
High Back Pressure (HBP) 5/50/20/Sub 0
Evaporating temperature: 5°C
Condensing temperature: +50°C
RGT: 20°C
Subcooling: 0		 45/130/65/Sub 0
Evaporating temperature: 45°F
Condensing temperature: 130°F
RGT: 65°F
Subcooling: 0





















2. Guide to brand names

The following brand names have been grouped as follows:  

Danfoss                     Maneurop / Danfoss
Tecumseh                  Unité Hermétique / UH / Tecumseh

3. Criterion to Define a Danfoss Alternative

1 – Technology
2 – Refrigerant
3 – Application
4 – Cooling capacity (or Displacement)
5 – Electrical data

Compressors with a scale of -/+ 15% in the cooling capacity may be proposed as best matching alternatives.

4. Rules Used to Replace a Refrigerant

Refrigerant Application Replacement Refrigerant
R12 All R134a
R502 All R404A
R22 AC
H/M/LBP		 R407C
R404A
R600a All R134a
R290 AC
H/M/LBP		 R407C
R404A
R134a AC
H/M/LBP		 R407C
R404A
R407C All R404A

5. Application Areas

Operating temperature-area, application area:
AC-HP Air Conditioning and Heat Pump
HBP High Back Pressure
HMBP High-Medium Back Pressure
HMLBP High-Medium-Low Back Pressure
MBP Medium Back Pressure
MLBP Medium-Low Back Pressure
LBP Low Back Pressure

6. Glossary

1ph Single phase
3ph Three-phase
1ph-RSIR Single phase with a start relay
1phCSIR Single phase with a start relay & start capacitor
1phCSR Single phase with a start relay & start capacitor & permanent capacitor
MO Mineral oil
POE Polyolester oil
PVE Polyvinylester oil
AB Alkyl Benzene
Danfoss - Your CO2 Solutions Provider

Danfoss - Your CO2 Solution Provider

CO2 has absolutely zero ozone depletion effect, and its global warming potential is negligible in the amounts used for industrial and commercial refrigeration.

Danfoss can provide a variety of products for cascade applications, as well as developing trans-critical solutions.