Which abbreviation expands to condenser water supply?

• A. Condenser water return
• B. Chilled water supply
• C. Condenser water level
• D. Condenser water supply

Answer: (D)

In HVAC systems, abbreviations are formed from the main words in a term, and supply vs return indicates the direction of flow in a loop. The term that represents the water going to the condenser is condenser water supply, which is commonly abbreviated as CWS. Among the options, the phrase that matches this expansion is condenser water supply, reflecting the supply line for condenser water. The other phrases refer to different concepts—condenser water return (the water returning from the condenser), chilled water supply (a different system loop), and condenser water level (a measurement, not a supply). So the best choice is condenser water supply.