Ultra Boiler Manual

Part number 550-100-440/0122
80
  
(continued)

1. Prepare the vent termination coupling by inserting a bird screen.
Bird screens must be purchased separately. See the parts list at the
end of this manual for part numbers.
a. If using 3-inch piping for an Ultra-230, cut a 4-inch bird screen
by placing 3-inch tting on screen and cutting around it as a
template.
2. Maintain the required dimensions of the nished termination
piping as shown in Figure92.
Multiple vent terminations
1. When terminating multiple Ultra boilers, terminate each vent/air
connection as described in this section.
2. Place adjacent terminations at least 6 inches apart.
3. For Canadian installations, provide clearances required by CSA
B149.1 or B149.2 Installation Code.
Connecting from vent termination to boiler
1. Install the termination penetration as instructed in the preced-
ing. en proceed to page82 to complete the piping between the
termination and the boiler.
Determine location for air inlet elbow
1. 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 appliance terminations.
2. Locate the air inlet elbow (termination) using the following
guidelines.
3. e air piping must terminate in a down-turned elbow as shown
in Figure93.
a. Apply the conguration on the le side of Figure93 unless the
terminations would fail to meet minimum clearance to grade
or snow line.
b. Apply the conguration on the right side of Figure93 when
the terminations need to be raised higher to meet clearance to
grade or snow line.
c. e air pipe may run up the side of the building, as shown.
e vent and air pipes must be secured with braces, and all
clearances and lengths must be maintained. Space braces no
further than 24 inches apart.
4. You must consider the surroundings when terminating the air
connection:
a. Make sure there are no obstructions for air ow. DO NOT
locate the termination where plants could grow and cause
obstruction to air ow.
b. Do not locate the terminations where wind eddies could aect
performance or cause recirculation with exhaust from other
appliances, such as inside building corners, near adjacent build-
ings or surfaces, window wells, stairwells, alcoves, courtyards
or other recessed areas.
c. Locate the air inlet termination at least 12 inches below and 12
inches horizontally from any appliance or building vent outlet.
5. 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.
Figure 92 Vent termination (through the roof) for direct vent:
vertical vent / sidewall air
Figure 93 Sidewall air inlet (termination) for direct vent: vertical
vent / sidewall air