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Coil Freeze Protection
For protection against coil freeze-up, recommended solutions are an industrial grade inhibited ethylene glycol or propylene
glycol solution. When the use of glycol is not practical, the system must be designed to meet both minimum flow and minimum
temperature requirements.
Coil volumes for the Vertex Evaporative Condenser using liquid cooling circuits is job specific.
Minimum Operation
When utilizing an auxiliary cooling circuit with water as the cooling media, the system must be operated to meet minimum flow
and temperature requirements. Maintain a minimum heat load so that the temperature of the fluid leaving the coil is not less
than 50°F (10°C).
To maintain the leaving fluid temperature at 50°F (10°C) when the process load is extremely light or shut off, apply an auxiliary
heat load to the circulating fluid and adjust the flow to ensure that fluid leaving the coil maintains the minimum required
temperature. Otherwise, a glycol solution can be used as the cooling media to prevent freezing.
Vertex™ Evaporative Condenser Operation & Maintenance Manual – Cold Weather Operation
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