WARNING
Thin ice may result in the vicinity of the discharge line.
For complete information on water well systems and lake and pond applications, refer to Manual
COOLING TOWER / BOILER
APPLICATION
The cooling tower and boiler water loop temperature is usually maintained between 50°F to 100°F to assure adequate cooling and heating performance.
In the cooling mode, heat is rejected from the unit into the source water loop. A cooling tower provides evaporative cooling to the loop water thus maintaining a constant supply temperature to the unit. When utilizing open cooling towers chemical water treatment is mandatory to ensure the water is free from corrosive minerals.
It is imperative that all air be eliminated from the source closed loop side of the heat exchanger to insure against fouling.
In the heating mode, heat is absorbed from the source water loop. A boiler can be utilized to maintain the loop at the desired temperature. In milder climates a “flooded tower” concept is often used. This concept involves adding makeup water to the cooling tower sump to maintain the desired loop temperature.
CAUTION
Water piping exposed to extreme low ambient temperatures are subject to freezing.
Units are equipped with double
Pressure / temperature ports are recommended in both supply and return lines for system flow balancing. Water flow can be accurately set by measuring the refrigerant to water heat exchangers water side pressure drop. See Table 8 for water flow and pressure drop information.
TABLE 8
WATER FLOW AND PRESSURE DROP
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| QW2S1 & |
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| QW3S1 | QW4S1 | QW6S1 |
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| GPM | PSIG | Ft. Hd. | PSIG | Ft. Hd. | PSIG | Ft. Hd. |
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| 3 | 0.1 | 0.23 |
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| 4 | 0.5 | 1.15 | 0.9 | 2.08 |
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| 5 | 1.2 | 2.77 | 1.4 | 3.23 |
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| 6 | 1.7 | 3.92 | 2.3 | 5.31 |
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| 7 | 2.3 | 5.31 | 3.2 | 7.38 | 2 | 4.61 |
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| 8 | 3.1 | 7.15 | 4.1 | 9.46 | 2.5 | 5.77 |
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| 9 | 4.1 | 9.46 | 5.1 | 11.77 | 3.2 | 7.38 |
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| 10 |
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| 6.1 | 14.07 | 3.9 | 9.00 |
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| 11 |
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| 7.1 | 16.38 | 4.7 | 10.84 |
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| 12 |
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| 8.2 | 18.92 | 5.5 | 12.69 |
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| 13 |
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| 9.4 | 21.69 | 6.4 | 14.76 |
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| 14 |
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| 10.6 | 24.45 | 7.3 | 16.84 |
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| 15 |
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| 8.1 | 18.69 |
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| 16 |
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| 9 | 20.76 |
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| 17 |
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| 9.9 | 22.84 |
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| 18 |
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Manual | |
Page | 38 of 46 |
