2 Pipe Heat Pump IVX and Sigma Set-Free
For use with Hitachi Sigma 2 Pipe Heat Pump Systems
For use with Hitachi Mini Set-Free 2 Pipe Heat Pump Systems
For use as pipe kit system on IVX-Comfort
For use as pipe kit system on IVX-Premium
For use as pipe kit system on IVX-Plus
| Accessory Model Reference | Description |
| E-102SN4 | 3 - 10HP Two Pipe refnet for Set-Free and IVX system combinations |
| E-162SN4 | 12 - 16HP Two Pipe refnet |
| E-242SN3 | 18 - 24HP Two Pipe refnet |
| E-302SN3 | 26 - 54HP Two Pipe refnet |