Ultra Boiler Manual

Part number 550-100-440/0122
22
  
Separate pipes (continued)
Figure 19 Multiple terminations — separate pipes — clearance
from vent of one to air intake of the next — alternate
conguration of air and vent terminations
Figure 20 Sidewall termination assembly — using separate pipes
1 Vent piping
2 Air piping
3 Sidewall termination plates, by
installer
4 Galvanized thimbles, by installer
5 Bird screen (air), by installer
6 Air inlet elbow
7 Elbow
8 Nipple
9 Elbow (vent termination)
10 Alternate elbow orientation
11 Bird screen (vent termination) —
supplied by installer
Maintain all requirements
shown in Figure 15, page 20
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 of 12 inches
between vent pipe and adjacent air inlet elbow, as shown in Fig-
ure18,page21 for U. S. installations.
3. For Canadian installations, provide clearances required by Natural
Gas and Propane Installation CAN/CSA B149.1 or B149.2 Instal-
lation Code.
4. 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.
5. Combustion air (NOT vent piping) can be manifolded as shown in
Figure59,page59.
Prepare wall penetrations
1. Air pipe penetration:
a. Cut a hole for the air pipe. Size the air pipe hole as close as desired
to the air pipe outside diameter.
2. Vent pipe penetration:
a. Cut a hole for the vent pipe. For either combustible or noncom-
bustible construction, size the vent pipe hole at least 0.4” larger
than the vent pipe diameter:
• 2¾” hole for 2”
• 4” hole for 3”
• 5” hole for 4”
b. Insert a galvanized metal thimble in the vent pipe hole as shown
in Figure20.
3. Use a sidewall termination plate as a template for correct location of
hole centers. Sidewall termination plates must be purchased sepa-
rately. See the parts list at the end of this manual for part numbers.
4. Follow all local codes for isolation of vent pipe when passing through
oors or walls.
5. Seal exterior openings thoroughly with exterior caulk.

1. Prepare the vent termination elbow and the air termination elbow
(Figure20) by inserting bird screens. Bird screens must be pur-
chased separately. See the parts list at the end of this manual for
part numbers.
2. When completed, the air termination coupling must be oriented
at least 12 inches below the vent termination and at least 12 inches
above grade or snow line as shown in Figure15,page20.
3. You can orient the vent termination elbow either directly outward
or 90 degrees away from the air inlet elbow as shown in Fig-
ure15,page20.
4. Maintain the required dimensions of the nished termination piping
as shown in Figure15,page20.
5. Do not extend exposed vent pipe outside of building more than
shown in this document. Condensate could freeze and block vent
pipe.
If extending the vent and air pipes out from the wall, in-
stall a coupling on each pipe. Mount the piping with the
coupling ush with the outer plate.