9)Pitch of Horizontal Piping - Pitch all horizontal piping so that any condensate which forms in the piping will run towards the boiler:
•Pitch Crown horizontal concentric venting 5/8” per foot
•Pitch Stainless steel venting 1/4” per foot.
10)Supporting Pipe - Vertical and horizontal sections of pipe must be properly supported:
•Support Crown concentric venting near the female end of each straight section of pipe.
Exception: Vertical runs of concentric pipe in an unused chinmey (Figure 7.36) need only be supported at the terminal and at the base of the run.
• Support stainless steel venting as called for by the vent manufacturer’s instructions.
FIGURE 7.7: SNORKEL TERMINAL CONFIGURATION
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