Horizontal Venting Instructions - Dunkirk XEB-2 Installation, Operation & Maintenance Manual

Maximum Horizontal Vent Length For Stainless Steel Vent Pipe - 30'
Plus One 90º Elbow Plus Vent Terminal.
Minimum Horizontal Vent Length - 2' Plus One 90º Elbow Vent
Termination.
Additional elbows are equivalent to 6 feet of straight pipe for 4" di-
ameter 90° elbow or 3 feet of straight pipe for 3" diameter 90° elbow.
2, 3, 4, 5, Section Boilers use 3" vent pipe; for 6, 7 Section Boilers use
4" vent pipe.
Figure 10 - Induced draft High Efficiency boilers

HOrIZONTAL VENTINg INSTruCTIONS

INDUCED DRAFT HIGH EFFICIENCY BOILERS
ChOICE OF VENT PIPE MATERIAL
1. U. L. Listed Z-Flex Z-Vent Stainless Steel Vent Pipe.
2. U. L. Listed Heat-Fab Saf-T-Vent Stainless Steel Vent Pipe.
3. U. L. Listed Flex-L Star-34 Stainless Steel Vent Pipe.
4. U. L. Listed ProTech Systems FasNSeal Stainless Steel Vent Pipe.
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