Ultra Boiler Manual

Part number 550-100-440/0122
23
  
BASIC INSTALLATION
Figure 21 Maximum piping lengths for separate vent
and air pipe vertical termination
Boiler
Ultra
Maximum
Piping, 2” *
Maximum
Piping, 3” *
Maximum
Piping, 4” *
Feet Elbows Feet Elbows Feet Elbows
-80 30 1 100 1
Not
allowed
-105 30 1 100 1
-155 Not allowed 100 1
-230 Not allowed 30 1 100 1
-299 Not allowed Not allowed 100 1
-399 Not allowed Not allowed 100 1
* Install reducers as necessary where connecting to the boiler vent and air
connections.
For piping using more than 1 elbow, reduce maximum allowable length:
• 7 feet for each additional 4-inch elbow (90° or 45°)
• 7 feet for each additional
2 or 3-inch long radius elbow
• 16 feet for each 2 or 3-inch short radius elbow
• 7 feet for each 2 or 3-inch 45-degree elbow.
NOTE: The 180-degree return bend is included in the allowed ttings. No deduc-
tion is required.
Figure 22 Vertical termination — separate pipes
Separate pipes
Allowable vent/air pipe materials
1. Use only the materials listed in Figure13,page19.
2. Purchase bird screens for vent and air terminations separately.
See the parts list at the end of this manual.
Maximum piping length
1. Locate the terminations such that the total air piping and vent
piping from the boiler to the termination will not exceed the
maximum length given in Figure21.
2. Maximum lengths listed in Figure21 allow for 1 elbow. Ad-
ditional elbows required a reduction in maximum length as
explained in the table notes.
Connecting from termination to boiler
1. Install the termination penetrations as instructed in the follow-
ing. en proceed to page82 to complete the piping between
the termination and the boiler.
Determine location
1. Locate the vent/air terminations using the following guidelines:
2. e air piping must terminate in a down-turned 180-degree
return bend as shown in Figure22. e edge of the air inlet
elbow must be at least 12 inches above the roof or snow line.
3. e vent piping must terminate in an up-turned coupling as
shown in Figure22. e top of the coupling must be at least
12 inches above the air intake in order to avoid recirculation
of ue products into the combustion air stream.
4. You must consider the surroundings when terminating the
vent and air:
a. Position the vent termination where vapors will not dam-
age nearby shrubs, plants or air conditioning equipment
or be objectionable.
b. e ue products will form a noticeable plume as they
condense 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 ue products impinge on building
surfaces or plants.
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. Condensate
can freeze, causing ice formations.
g. Locate or guard vent to prevent condensate damage to
exterior nishes.