User Guide

30 l uponorengineering.com
United States — ASTM E84
Figure 3-18: QAI P321-1
Guidelines: ½" through ¾" (uninsulated)
Limitations: Adjacent runs shall be located at least 18" apart.
Figure 3-19: QAI P321-1
Guidelines: ½" through 3" (uninsulated)
Limitations: ½" minimum thickness insulation as specied in Table 3-3.
Figure 3-20: QAI P321-2
Guidelines: ½" through 3" (PEX-a pipe support)
Pipe or tting sections without PEX-a pipe support must be covered with a rated insulation per Table 3-5.
There is no minimum length of PEX-a pipe support segments.
Minimum 18"
Clamp
½" through ¾"
Uponor PEX pipe
No limitation
Clamp
Minimum ½" 25/50
rated insulation
½" through 3"
Uponor PEX pipe
No limitation
Clamp
½" through 3"
Uponor PEX pipe
Uponor PEX-a
Pipe Support