Ultra Boiler Manual

Part number 550-100-440/0122
69


ADVANCED INSTALLATION
d. Avoid possibility of accidental contact of ue products with
people or pets.
e. Do not locate the terminations where wind eddies could aect
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
nishes.
3. Maintain clearances as shown in Figure70,page68, Figure71,
Figure72 and Figure73. 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
below) 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73 for U. S. installations. For Canadian installations,
provide clearances required by Natural Gas and Propane Instal-
lation
CAN/CSA
B149.1 or B149.2 Installation Code.
3. e air inlet of an Ultra boiler is part of a direct vent connection.
It is not classied 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59,page59.
Figure 71 Termination location – Weil-McLain vent/air plate –
clearances to openings
Figure 72 Termination location – Weil-McLain vent/air plate –
clearances to public walkway or forced air intake
Figure 73 Termination location – Weil-McLain vent/air plate –
multiple boilers – clearance from vent to air intake of
the next boiler
Weil-McLain cap (cont.)