Danfoss EVRH 10 – 22 Solenoid Valve Installation Guide
Types: Normally Closed (NC) and Normally Open (NO)
Refrigerants
This solenoid valve is compatible with the following refrigerants:
- R744
- R22/R407C
- R404A/R507
- R410A
- R134a
- R407A
- R23
For compatibility with other refrigerants, please contact Danfoss.
Valve Types:
- EVRH 10, EVRH 15, EVRH 18, EVRH 20, EVRH 22 (NC): Typically shown with a specific internal configuration.
- EVRH 10, EVRH 15, EVRH 20 (NO): Typically shown with a different internal configuration.
Note: Details on tube construction are provided.
Maximum operating temperatures are indicated: max. 700 °C (1300 °F) and max. 100 °C (212 °F) for specific components or conditions.
UL Approved Coils
Information regarding UL approved coils is presented, including wattage and temperature ratings:
- 14 W a.c.: Maximum temperature tmax = 122 °F (50 °C), Minimum temperature tmin = -40 °F (-40 °C).
- 20 W a.c.: Maximum temperature tmax = 80 °C (175 °F).
- 20 W a.c.: Maximum temperature tmax = 50 °C (120 °F).
Note: UL approval is recognized when an EVRH series solenoid valve is combined with a general-purpose coil. A sticker may apply only to UL products.
Technical Specifications and Data
Torque Values and Torx Sizes:
| Type | Torque [Nm] | [kpm] | [ft-lbs] | Torx size |
|---|---|---|---|---|
| EVRH 10 | 5 | 0.5 | 3.6 | T30 |
| EVRH 15 – 18 | 14 | 1.4 | 10 | T30 |
| EVRH 20 – 22 | 20 | 2.0 | 14 | T40 |
Operating Conditions:
- Minimum medium temperature: -40 °C (-40 °F)
- Maximum medium temperature: -105 °C (221°F)
- Maximum working pressure (PS/MWP): 45.2 barg / 655 psig
- Maximum opening differential pressure (MOPD): 0
Data on armature tube, including US data, is available on the label.
Ensure the O-ring is correctly in place during installation.
Important Warnings
Warning: Never switch on power to the coil when it is dismounted from the valve. Doing so may damage the coil and pose a risk of injury or burns.
Refer to instruction IC.PI.600.A1.22 for additional notes (Note 2+3).
Assembly Notes
Detailed diagrams illustrate the assembly of EVRH 10-22 (NC) and EVRH 10-20 (NO) solenoid valves. These include exploded views of components and their correct placement.
