Instructions / Assembly

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You must not use “B” vent in an exhaust application. “B” vent is for intake applications ONLY. Using “B” vent in an exhaust application
will result in serious injury or death.
Figure 14 - NOTE: Drawing is meant to demonstrate system venting ONLY.
D. EXHAUST VENT AND INTAKE PIPE LOCATION
NOTE: SEE ADDITIONAL REQUIREMENTS FOR MASSACHUSETTS IN THE BACK OF THIS MANUAL.
1. Determine exhaust vent location:
 Total length of vent may not exceed the limits specified in Part 6.
 The vent piping for this boiler is approved for zero clearance to combustible construction.
 See Venting Details within this section of clearances for location of exit terminals of direct-vent venting systems.
 Avoid terminating exhaust vents near shrubs, air conditioners or other objects that will obstruct the exhaust stream.
 The flue products coming from the exhaust vent will create a large plume when the boiler is in operation. Avoid venting in
areas that will affect neighboring buildings or be considered objectionable.
 The boiler vent system shall terminate at least 3 feet (0.9 m) above any forced air intake located within 10 ft (3 m).
 Provide 6 feet of clearance from the inside corner of vertical walls, chimneys, etc., as well as horizontal corners created by roof
overhangs.
2. Determine intake pipe location:
 Provide 1 foot of clearance from the bottom of the intake pipe and the level of maximum snow accumulation. Snow removal
may be necessary to maintain clearances.
 Do not locate the intake pipe in a parking area where machinery may damage the pipe.
 Follow required minimum clearances.