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6.3 - Minimum chilled water flow (units without hydraulic module)
The minimum chilled water flow is shown in the table on the next page. If the system flow is less than this, the
evaporator flow can be re-circulated, as shown in the diagram.
For minimum chilled water flow rate
6.4 - Maximum chilled water flow (units without hydraulic module)
The maximum chilled water flow is shown in the table on the next page. If the system flow exceeds the maximum
value, it can be bypassed as shown in the diagram.
For maximum chilled water flow rate
6.5 - Variable flow evaporator
Variable evaporator flow can be used in standard 30XQ chillers. The chillers maintain a constant leaving water
temperature under all flow conditions. For this to happen, the minimum flow rate must be higher than the minimum flow
given in the table of permissible flow rates and must not vary by more than 10% per minute.
If the flow rate changes more rapidly, the system should contain a minimum of 6.5 liters of water per kW instead of 3.5
l/kW.
6.6 - System minimum water volume
For better control of leaving water temperature, the water loop minimum capacity is given by the formula:
Capacity = CAP (kW) × N Liters
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