Level 4 Module 1: Water Treatment Already Graded A+
1. What potential issue increases with a higher concentration of dissolved solids in an HVAC system's
water? - Answer: Corrosion.
2. Which dissolved gas has minimal impact on water systems? - Answer: Nitrogen.
3. What problem arises in...
Level 4 Module 1: Water Treatment Already Graded A+
1. What potential issue increases with a higher concentration of dissolved solids in an HVAC system's
water?
- Answer: Corrosion.
2. Which dissolved gas has minimal impact on water systems?
- Answer: Nitrogen.
3. What problem arises in an HVAC system due to the presence of slime-producing biological organisms?
- Answer: Inadequate heat transfer.
4. If blue litmus paper turns red upon testing a water sample, what does that indicate about the water's
pH?
- Answer: The pH is below 7.0.
5. When adding chemicals to a solution tank, what sequence should be followed?
- Answer: Add water first, then the chemicals.
6. What is a mechanical filtration device used to maintain water quality in HVAC systems?
- Answer: Strainer.
7. What is the purpose of backwashing in water treatment?
- Answer: To prevent accumulated particles from clogging a multimedia filter.
8. Which device is used to supply biocides in steam and water systems?
- Answer: Automatic chemical feed controller.
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