Dawson Company

Instructor: Kendal Smith or RJ Santiago, CPD, GPD, Business Development Group

Who should attend? :

Plumbing Engineers / Engineers for design build contractors

Topic: Centralized Heat Pump Water Heater (CHPWH) System Design Considerations and new sizing techniques

Part 1:

• Overview of heat pump refrigerant cycle
• Discuss Minimum Lift and water side Delta T
• Current 3rd Party testing standards (EnergyStar, DOE, AHRI Standard 1300)
• Typical refrigerants used for CHPWH
• General design considerations

Part 2:

• “Single-pass” vs. “Multi-pass” configuration vs. piping schematic
• Peak and off-peak scenario hydronic analysis
• Pros and cons of “single-pass” vs. “multi-pass”
• Electric Swing Tank vs. Electric Backup – hydronic analysis

Part 3:

• ASPE Fixture Tables
• CHPWH Sizing Methods
• ASHRAE load profile
• Sizing examples