The sum of the Structural and Product program sections produces the **Primary Refrigeration Load**.

The recommended **Running Load** (number of hours available for the Refrigeration plant to meet the **Primary Refrigeration Load**) is shown. This may be accepted or from 16 to 24 hours can be entered instead.

**Running loads** in excess of 22 hours should only be applied in blast freezer and blast chiller applications.

Example: Applying an 'off-cycle' defrost Running Load of 16 hours means that the Primary Refrigeration Load is multiplied by 24/16. Therefore a Primary Refrigeration Load of 10kW x 24/16 results in a Preliminary Refrigeration load of 15kW.

The sum of the **Primary** (A) and **Running Load** (B) is the **Preliminary Refrigeration Load** but this figure is not actually displayed on screen.

The recommended Unit Cooler **Fan Load** (C) will be shown after the **Preliminary Refrigeration Load** has been computed.

The recommended Unit Cooler **Fan Load** may be accepted or a different load can be entered. The Unit Cooler **Fan Load** must be from 2.5% to 15% of the **Preliminary Refrigeration Load**

The sum of the **Preliminary Refrigeration Load** and the Unit Cooler **Fan Load** is the **Total Coldroom Refrigeration Load**.