Sidewall Vent/Air Termination: Weil-Mclain Plate - Weil-McLain Ultra Manual

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gas fired water boiler
Sidewall vent/air termination:
d. Avoid possibility of accidental contact of flue products with
people or pets.
e. Do not locate the terminations where wind eddies could affect
performance or cause recirculation, such as inside building
corners, near adjacent buildings or surfaces, window wells,
stairwells, alcoves, courtyards or other recessed areas.
f. Do not terminate above any door or window or under a deck.
Condensate can freeze, causing ice formations.
g. Locate or guard vent to prevent condensate damage to exterior
finishes.
3. Maintain clearances as shown in
and Figure 39. Also maintain the following:
a. Vent must terminate:
• At least 6 feet from adjacent walls.
• No closer than 5 feet below roof overhang.
• At least 7 feet above any public walkway.
• At least 3 feet above any forced air intake within 10 feet.
• No closer than 12 inches below or horizontally from any
door or window or any other gravity air inlet.
b. Air inlet must terminate at least 12" above grade or snow line
c. Do not terminate closer than 4 feet horizontally (above or be-
low) from any electric meter, gas meter, regulator, relief valve
or other equipment.
4. Locate terminations so they are not likely to be damaged by foreign
objects, such as stones or balls, or subject to buildup of leaves or
sediment.
Multiple vent/air terminations
1. When terminating multiple Ultra boilers, terminate each vent/air
connection as described in this manual.
All vent pipes and air inlets must terminate at the same
height to avoid possibility of severe personal injury, death
or substantial property damage.
2. Place wall penetrations to obtain minimum clearance as shown in
Figure 39 for U. S. installations. For Canadian installations, provide
clearances required by CSA B149.1 or B149.2 Installation Code.
3. The air inlet of an Ultra boiler is part of a direct vent connection.
It is not classified as a forced air intake with regard to spacing from
adjacent boiler vents.
4. Combustion air (NOT vent piping) can be manifolded as shown
in Figure 31, page 30.
Install terminations — Weil-McLain vent/air plate
The inside and outside plates are stamped to identify the
exhaust (vent) and intake (air) openings. Make sure to
orient the plates correctly.
1. Locate termination opening and avoid obstructions:
a. Use the template supplied with the termination kit.
b. Locate the template on the outside building surface where the
penetration is to be made.
34
— Boiler Manual
Figure 36, Figure 37, Figure 38
Weil-McLain plate
Figure 37
Termination location — Weil-McLain vent/air
plate — clearances to openings
Figure 38
Termination location — Weil-McLain vent/
air plate — clearances to public walkway or
forced air intake
Figure 39
Termination location — Weil-McLain vent/air
plate — multiple boilers — clearance from
vent of one to air intake of the next
(continued)
Part number 550-100-066/0608