Install Instructions (Venting)

Part number 550-100-103/1110
A–17
GAS-FIRED WATER BOILER — Manual addendum — Venting
DIRECT VENT: Vertical vent / sidewall air (continued)
Multiple air terminations
When terminating multiple Ultra boiler air connections, terminate 1.
each air connection as described in this manual.
Place wall penetrations to obtain minimum clearances as instructed 2.
in this manual.
Place adjacent air inlets for multiple Ultra boilers at least 6 inches 3.
apart.
For Canadian installations, provide clearances required by CSA 4.
B149.1 or B149.2 Installation Code.
Combustion air (NOT vent piping) can be manifolded as shown 5.
in the Ultra boiler manual.
Prepare wall penetrations
Air pipe penetration:1.
a. Cut a hole for the air pipe. Size the air pipe hole as close as
desired to the air pipe outside diameter.
Seal exterior openings thoroughly with exterior caulk.2.
Termination and fittings
Prepare the air termination elbow (1. Figure 21) by inserting a bird
screen. Bird screens must be purchased separately. See the parts
list at the end of this manual for part numbers.
Use metal plates (by installer) at inside and ouside penetrations 2.
as shown in Figure 22.
If extending the air pipe out from the wall, install a cou-
pling on each pipe. Mount the piping with the coupling
flush with the outer plate.
Connecting from air termination to boiler
Install the terminations as instructed in the following. Then pro-1.
ceed to page 18 to complete the air and vent piping between the
termination and the boiler.
Sidewall air inlet installation for direct vent: Figure 22
vertical vent / sidewall air
1 Air piping
2 Sidewall plates, by installer
3 Bird screen (air), by installer
4 Air inlet elbow