Heat exchanger filling and draining overview

Follow these steps to ensure that your heat exchanger is drained and filled properly.

1. Filling a heat exchanger with water includes using the air purge tool that is supplied with the heat exchanger to purge any air from the heat exchanger manifolds.
   Note: Attachment and detachment of air purge tool can be done with the tool valve open to reduce water pressure at the air bleed valves and reduce water that might escape at the valves during attaching or detaching.
   Containers must be available for capturing water. The container must hold a minimum of 2 L (0.5 gal) capacity for purging air and a minimum 6 L (1.6 gal) capacity for draining a heat exchanger.
2. Draining a heat exchanger is required before the door that contains the heat exchanger can be removed from the rack, or before a rack with a heat exchanger installed can be moved. The air purge tool can be connected to the drain port on the bottom of the heat exchanger to drain the water.
3. Use absorbent materials, such as cloth, under the work area to capture any water that might spill when you fill or drain a heat exchanger.