PEX Systems and Specifications

Jeff Zack discusses the use of PEX in outdoor wood boilers, focusing on the differences between closed and open systems. He explains the importance of using oxygen barrier PEX for closed systems and potable water PEX for open systems. The video provides guidance on identifying system types and choosing the appropriate PEX size based on system length and BTU requirements. Jeff concludes with recommendations for purchasing PEX products.

What is the primary concern when choosing PEX for outdoor wood boilers?

• The cost of the PEX

• The color of the PEX

• The system's manufacturer recommendation

• The length of the PEX

What percentage of systems are typically closed or pressurized?

• 95%

• 50%

• 10%

• 5%

Which type of PEX is recommended for closed systems?

• Flexible PEX

• Potable water PEX

• Oxygen barrier PEX

• Insulated PEX

What feature of oxygen barrier PEX prevents oxygen molecules from entering the system?

• Its flexibility

• Its shiny coating

• Its thickness

• Its color

How can you identify an open system?

• By its vent

• By its size

• By its cost

• By its color

What is the best way to confirm if your system is open or closed?

• Measure the system's length

• Consult the system's manufacturer

• Inspect the system's cost

• Check the system's color

For systems up to 150 feet, which PEX size is generally sufficient?

• 1 inch

• 3/4 inch

• 1.5 inches

• 1/2 inch

What is the internal diameter of a 1-inch PEX?

• 0.5 inches

• 0.75 inches

• 1.05 inches

• 0.875 inches

What factors influence the choice of PEX size for a system?

• The system's color

• The number of BTUs and system length

• The system's manufacturer

• The system's cost

What is the internal diameter of an inch-and-a-quarter PEX?

• 1.75 inches

• 1.5 inches

• 1.25 inches

• 1.05 inches