Tube-in-tube heat exchanger HE
Installation guide
ENGINEERING TOMORROW
Danfoss
Refrigerants
The following refrigerants are compatible:
- R22
- R1270*
- R134a
- R290*
- R404A
- R407A
- R407C
- R407F
- R448A
- R449A
- R450A
- R452A
- R507A
- R513A
- R600*
- R600a*
*) Applicable for HE 0.5, HE 1.0 and HE 1.5 only.
For a complete list of approved refrigerants, visit www.products.danfoss.com and search for individual code numbers, where refrigerants are listed as part of technical data.
System Overview and Installation Notes
Diagram: System Schematic
A schematic illustrates a refrigeration system, featuring a compressor, expansion valve, and a tube-in-tube heat exchanger labeled 'HE'. Arrows indicate the flow of refrigerant through the components.
Diagram: Warning and Prohibited Action
A warning symbol ⚠️ is presented, followed by a depiction of pipe connections marked with a prohibitory cross ❌, signifying an incorrect installation or handling procedure.
Technical Specifications
The following table details the technical specifications for the HE series heat exchangers:
| Type | HE 0.5, HE 1.0, HE 1.5, HE 4.0 | HE 8.0 |
|---|---|---|
| Max. working pressure PS/MWP | 28 bar/406 psig | 21.5 bar/312 psig |
| Max. test pressure (one time) | 40 bar/580 psig | 28 bar/406 psig |
| Temperature range | -60 – 120 °C (-76 – 248 °F) | -60 – 120 °C (-76 – 248 °F) |
Diagram: Soldering Process
The process of joining pipes using 'Silver flo 55 + Easy flow flux' is shown. A thermometer icon ?️ indicates the maximum temperature limit of 150 °C (300 °F) for this operation.
