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Alternate vertical terminations with multiple boilers.
Figure 9-19
Note: keep the terminals at min. 12" above grade or snow line. Provide vent and air intake with bird screen.
Concentric Vertical Termination.
Minimum clearance
above snow level
(18" for Canada)
Maximum 24" above
roof or snow level.
Figure 9-20
Do Not Install U-Bend or elbow on concentric termination
Figure 9-21
52
E93.1601EN032.C VGH installation manual
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