Sidewall Vent/Air Termination: Separate Pipes - Weil-McLain Ultra Manual

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gas fired water boiler
Sidewall vent/air termination:
4. You must consider the surroundings when terminating the vent
and air:
a. Position the vent termination where vapors will not damage
nearby shrubs, plants or air conditioning equipment or be
objectionable.
b. The flue products will form a noticeable plume as they con-
dense in cold air. Avoid areas where the plume could obstruct
window views.
c. Prevailing winds could cause freezing of condensate and water/
ice buildup where flue products impinge on building surfaces
or plants.
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.
5. Maintain clearances as shown in the illustrations in this manual
section. 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 lease 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. Do not terminate closer to 4 feet horizontally from any electric
meter, gas meter, regulator, relief valve or other equipment.
Never terminate above or below any of these within 4 feet
horizontally.
6. 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.
7. Do not connect any other appliance to the vent pipe or multiple
boilers to a common vent pipe.
Completing the vent/air piping
1. Install vent/air penetrations as explained in the following pages
before installing vent and air piping from the boiler to the termi-
nations. Insert piping from boiler air and vent connections, then
attach exterior termination piping.
2. Follow instructions beginning on
boiler to termination.
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.
40
— Boiler Manual
page 48 to complete piping from
Separate pipes
Figure 50
Sidewall termination with separate pipes —
clearances to openings
Figure 51
Sidewall termination with separate pipes —
clearances to public walkway or forced air
intake
Figure 52
Multiple terminations — separate pipes —
clearance from vent of one to air intake of the
next
(continued)
Part number 550-100-066/0608