REFRIGERANT PIPING LENGTH LIMITATIONS
Liquid Line Sizing and Maximum Total Equivalent Lengths{ for Cooling Only Systems with Puronr Refrigerant:
The maximum allowable length of a residential split system depends on the liquid line diameter and vertical separation between indoor and outdoor units.
See Table below for liquid line sizing and maximum lengths :
Maximum Total Equivalent Length
Outdoor Unit BELOW Indoor Unit
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| Liquid |
| AC with Puron Refrigerant Maximum Total Equivalent Length{: Outdoor unit BELOW Indoor |
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Size | Liquid Line | Line |
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| Vertical Separation ft (m) |
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Connection | Diam. |
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| w/ TXV |
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18000 |
| 1/4 | 150 | 150 | 125 | 100 | 100 | 75 |
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AC with | 3/8 | 5/16 | 250* | 250* | 250* | 250* | 250* | 250* | 250* | 225* |
| 150 |
Puron |
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| 3/8 | 250* | 250* | 250* | 250* | 250* | 250* | 250* | 250* |
| 250* | |
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24000 |
| 1/4 | 75 | 75 | 75 | 50 | 50 |
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AC with | 3/8 | 5/16 | 250* | 250* | 250* | 250* | 250* | 225* | 175 | 125 |
| 100 |
Puron |
| 3/8 | 250* | 250* | 250* | 250* | 250* | 250* | 250* | 250* |
| 250* |
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30000 |
| 1/4 | 30 |
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AC with | 3/8 | 5/16 | 175 | 225* | 200 | 175 | 125 | 100 | 75 |
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Puron |
| 3/8 | 250* | 250* | 250* | 250* | 250* | 250* | 250* | 250* |
| 250* |
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36000 |
| 5/16 | 175 | 150 | 150 | 100 | 100 | 100 | 75 |
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AC with | 3/8 |
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3//8 | 250* | 250* | 250* | 250* | 250* | 250* | 250* | 250* |
| 250* | ||
Puron |
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42000 |
| 5/16 | 125 | 100 | 100 | 75 | 75 | 50 |
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AC with | 3/8 |
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3/8 | 250* | 250* | 250* | 250* | 250* | 250* | 250* | 250* |
| 150 | ||
Puron |
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48000 |
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AC with | 3/8 | 3/8 | 250* | 250* | 250* | 250* | 250* | 250* | 230 | 160 |
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Puron |
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49000 |
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AC with | 3/8 | 3/8 | 250* | 250* | 250* | 250* | 250* | 250* | 230 | 160 |
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Puron |
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60000 |
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AC with | 3/8 | 3/8 | 250* | 250* | 250* | 225* | 190 | 150 | 110 |
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Puron |
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61000 |
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AC with | 3/8 | 3/8 | 250* | 250* | 250* | 225* | 190 | 150 | 110 |
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Puron |
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* Maximum actual length not to exceed 200 ft (61 m)
{Total equivalent length accounts for losses due to elbows or fitting. See the Long Line Guideline for details.
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Maximum Total Equivalent Length
Outdoor Unit ABOVE Indoor Unit
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| Liquid |
| AC with Puron Refrigerant Maximum Total Equivalent Length{: Outdoor unit ABOVE Indoor | |||||||
Size | Liquid Line | Line |
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| Vertical Separation ft (m) |
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Connection | Diam. |
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| 25 |
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| w/ TXV | (7.6) |
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18000 |
| 1/4 | 175 |
| 250* | 250* | 250* | 250* | 250* | 250* | 250* |
AC with | 3/8 | 5/16 | 250* |
| 250* | 250* | 250* | 250* | 250* | 250* | 250* |
Puron |
| 3/8 | 250* |
| 250* | 250* | 250* | 250* | 250* | 250* | 250* |
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24000 |
| 1/4 | 100 |
| 125 | 175 | 200 | 225* | 250* | 250* | 250* |
AC with | 3/8 | 5/16 | 250* |
| 250* | 250* | 250* | 250* | 250* | 250* | 250* |
Puron |
| 3/8 | 250* |
| 250* | 250* | 250* | 250* | 250* | 250* | 250* |
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30000 |
| 1/4 | 30 |
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AC with | 3/8 | 5/16 | 250* |
| 250* | 250* | 250* | 250* | 250* | 250* | 250* |
Puron |
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| 3/8 | 250* |
| 250* | 250* | 250* | 250* | 250* | 250* | 250* | |
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36000 | 3/8 | 5/16 | 225* |
| 250* | 250* | 250* | 250* | 250* | 250* | 250* |
AC with |
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3/8 | 250* |
| 250* | 250* | 250* | 250* | 250* | 250* | 250* | ||
Puron |
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42000 |
| 5/16 | 175 |
| 200 | 250* | 250* | 250* | 250* | 250* | 250* |
AC with | 3/8 |
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3/8 | 250* |
| 250* | 250* | 250* | 250* | 250* | 250* | 250* | ||
Puron |
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48000 | 3/8 | 3/8 | 250* |
| 250* | 250* | 250* | 250* | 250* | 250* | 250* |
AC with |
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Puron |
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49000 |
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AC with | 3/8 | 3/8 | 250* |
| 250* | 250* | 250* | 250* | 250* | 250* | 250* |
Puron |
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60000 |
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AC with | 3/8 | 3/8 | 250* |
| 250* | 250* | 250* | 250* | 250* | 250* | 250* |
Puron |
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61000 |
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AC with | 3/8 | 3/8 | 250* |
| 250* | 250* | 250* | 250* | 250* | 250* | 250* |
Puron |
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* Maximum actual length not to exceed 200 ft (61 m)
{Total equivalent length accounts for losses due to elbows or fitting. See the Long Line Guideline for details.
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116B
3