Specifications

Part number 550-100-090/0809
g a s -f i r e d w a t e r b o i l e r — Boiler Manual
76
Install vent/air piping — boiler to terminations (cont.)
Sidewall termination methods and Figure 92
installation requirements
Weil-McLain sidewall
termination plate
(install termination — page 19)
Install pipe supports every 5 feet •
on both the horizontal and vertical
runs.
Install a hanger support within •
6 inches of any upturn in the
piping.
The Weil-McLain plate •
termination must be installed
before piping from the boiler to
the termination.
Slope horizontal piping downward •
toward the boiler at least 1/4 inch
per foot.
Weil-McLain 3” PVC
concentric termination
(install termination — page 63)
Install pipe supports every 5 feet •
on both the horizontal and vertical
runs.
Install a hanger support within •
6 inches of any upturn in the
piping.
The Weil-McLain 3” PVC •
concentric termination assembly
must be installed before piping
from the boiler to the termination.
Support the termination at the
wall as shown in the termination
instructions.
Slope horizontal piping downward •
toward the boiler at least 1/4 inch
per foot.
Rotate the concentric termination •
Y-fitting about 30° to result in pipe
centers the same as at the boiler.
Sidewall termination with
separate vent and air
pipes
(install termination — page 66)
Prepare wall penetrations before •
installing vent and air piping.
Finish by attaching external
pipe and fittings as shown in the
termination instructions.
Install pipe supports every 5 feet •
on both the horizontal and vertical
runs.
Install a hanger support within •
6 inches of any upturn in the
piping.
Support vertical runs on the •
outside of the building with
brackets as shown in the
termination instructions.
Slope horizontal piping downward •
toward the boiler at least 1/4 inch
per foot.
Vertical termination methods and Figure 93
installation requirements
Weil-McLain 3” PVC
concentric termination
(install termination — page 69)
Install pipe supports every 5 feet •
on both the horizontal and vertical
runs.
Install a hanger support within •
6 inches of any upturn in the
piping.
The Weil-McLain 3” PVC •
concentric termination assembly
must be installed before piping
from the boiler to the termination.
Support the termination at
the ceiling and above the roof
as shown in the termination
instructions.
Slope horizontal piping downward •
toward the boiler at least 1/4 inch
per foot.
Use long-radius elbows for air •
piping when using 2” or 3” pipe to
reduce pressure drop.
Rotate the concentric termination •
Y-fitting about 30° to result in pipe
centers the same as at the boiler.
Vertical termination with
separate vent and air
pipes
(install termination — page 73)
Prepare roof penetrations before •
installing vent and air piping.
Finish by attaching termination
fittings as shown in termination
instructions.
Install pipe supports every 5 feet •
on both the horizontal and vertical
runs.
Install a hanger support within •
6 inches of any upturn in the
piping.
Slope horizontal piping downward •
toward the boiler at least 1/4 inch
per foot.
Air piping may be offset as •
shown at left so termination
can be located as required in the
installation instructions.
Use long-radius elbows for air •
piping when using 2” or 3” pipe to
reduce pressure drop.