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5.5Filling Instructions
5.5.1Preparing the System for Filling
It is important to remove any dirt, oil or metal filings that may contaminate the cooling system piping in order to prevent contamination of the fresh glycol solution and fouling of the drycooler piping. The system should be flushed thoroughly using a mild cleaning solution or
Calculate the internal volume of the system as closely as possible. See Table 12 and Table 14 for unit volumes. Use volume in Table 13 for glycol piping volumes.
Table 12 Indoor unit glycol volume approximate gallons (liters) max.
Model (50 Hz) | GLYCOOL | |
|
|
|
071WG/(070WG) | 2.0 (7.5) | — |
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|
|
061G/(058G) | — | 4.0 (15.1) |
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|
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Table 13 Volume in standard Type “L” copper piping
Diameter (in.) | Volume | |
|
|
|
Outside | Inside | Gal/Ft L/M |
|
|
|
1/2 | 0.123 | 0.008 (0.01) |
|
|
|
5/8 | 0.555 | 0.012 (0.15) |
|
|
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3/4 | 0.666 | 0.018 (0.22) |
|
|
|
7/8 | 0.785 | 0.025 (0.31) |
|
|
|
1.025 | 0.043 (0.53) | |
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