Ultra Boiler Manual

Part number 550-100-440/0122
67
  
ADVANCED INSTALLATION
Figure 67 Vent and air pipe requirements

Step 7 Install the boiler.
Step 8 Determine the termination method — sidewall or vertical,
concentric or separate pipes, etc.
Step 9 Determine proper location for wall or roof penetration
for each termination.
Step 10 Install termination assembly as described in this manual.
Step 11 Install air and vent piping from boiler to termination.
Step 12 Install pipe supports and brackets as required.
Other vent/air piping alternatives
— see information beginning on
page66. Options include other
termination fittings and vertical
terminations.
Commonwealth of Massachusetts
When the boiler is installed within the Commonwealth of Mas-
sachusetts:
y is product must be installed by a licensed plumber or gas
tter.
y Sidewall vent air installations — see instructions on page65.
Sidewall termination
(Weil-McLain sidewall termination cap)
Ultra
models
2”
Plastic
3” Plastic or
3” AL29-4C
4” Plastic or
4” AL29-4C
-80 & -105 Yes Yes No
-155 No Yes No
-230 No Yes Yes
299/399 No No Yes
Use appropriate adapters where needed — Ultra-80 through -155
require 3.5 inch outside diameter pipe at the boiler vent and air connections.
Ultra-230, -299 and -399 boilers require 4.5 inch outside diameter pipe at
the boiler vent and air connections.
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1. Vent pipe and air pipe must each be at least 2feet long,
with two (2)elbows if sidewall venting or 1 elbow if
vertical venting.

1. See Figure69,page68 for maximum length of vent and
air piping using the Weil-McLain sidewall vent cap.


1. This section covers sidewall termination using the
Weil-McLain sidewall vent cap.
a. Models 80, 105 and 155 requires a 3-inch pipe size kit.
b. Models 230, 299 and 399 requires a 4-inch pipe size kit.
c. e Weil-McLain sidewall vent/air cap kit includes
the termination cap, inside and outside wall plates,
and mounting hardware to secure the plates.
2. For other termination options and parts required,
see page66.

1. Vent and air pipe diameters can be as specified in
Figure67.
Figure 68 Vent and air termination options
Weil-McLain cap