User Guide

Part number 550-100-400/0717
67
!$6!.#%$).34!,,!4)/.
®
SERIES 4 GAS-FIRED WATER BOILER — Boiler Manual
&IGURE Vent and air pipe requirements
Vent and air pipe installation sequence
3TEP Install the boiler.
3TEP Determine the termination method — sidewall or vertical,
concentric or separate pipes, etc.
3TEP Determine proper location for wall or roof penetration
for each termination.
3TEP Install termination assembly as described in this manual.
3TEP Install air and vent piping from boiler to termination.
3TEP Install pipe supports and brackets as required.
/THER 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:
s This product must be installed by a licensed plumber or
gas fi tter.
s Sidewall vent air installations — see instructions on page 65 .
Sidewall termination
7EIL-C,AINSIDEWALLTERMINATIONCAP
5LTRA
MODELS
v
0LASTIC
v0LASTICOR
v!,#
v0LASTICOR
v!,#
 9ES 9ES .O
 .O 9ES .O
 .O 9ES 9ES
 .O .O 9ES
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, -299/310 and -399 boilers
require 4.5 inch outside diameter pipe at the boiler vent and
air connections.
Vent and air pipe minimum length
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.
Vent and air pipe maximum length
1. See Figure 69, page 68 for maximum length of vent and
air piping using the Weil-McLain sidewall vent cap.
Vent and air pipe termination options
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, 299/310 and 399 requires a 4-inch pipe
size kit.
c. The 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 .
Vent and air pipe requirements
1. Vent and air pipe diameters can be as specified in
Figure 67 .
&IGURE Vent and air termination options
Sidewall vent/air termination: Weil-McLain cap