Figure 2 figure 3 – DuraVent FasNSeal - Fixed Damper User Manual
Page 3
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with closing off the damper until the desired
chamber pressure has been achieved.
• At this point lock the damper blade in
position and begin the burner set up as
prescribed by the OEM.
ECCENTRIC
INCREASER
EXHAUST FLOW
TAPERED
INCREASER
EXHAUST FLOW
1/4" PER FT
PROPER
SLOPE
Figure 2
Figure 3
EXHAUST FLOW
1/4" PER FT
PROPER
SLOPE