Direct Exhaust - Sidewall - Weil-McLain Ultra Commercial Installation And Start-Up Manual

COMMERCIAL GAS
DIRECT EXHAUST — Sidewall
DIRECT EXHAUST — Sidewall
termination — installation
sequence
Install the boiler.
Determine the proper location for
wall penetration for each termina-
tion.
Prepare wall penetrations before
installing vent piping.
Finish by attaching external pipe
and fittings as shown in the termi-
nation instructions.
Support vertical runs on the out-
side of the building with brack-
ets as shown in the termination
instructions.
Install vent piping from boiler to
termination.
Install a hanger support within
6 inches of any upturn in the pip-
ing.
Slope horizontal piping downward
toward the boiler at least 1/4 inch
per foot.
Connect the vent piping at the boiler
per manual instructions.
32
-
FIRED WATER BOILER
Allowable vent pipe materials
1. Use only the materials listed in
2. Install a bird screen in each vent pipe termination (coupling or elbow).
Bird screens are supplied with the boiler. Cut to size if necessary to fit
vent pipe size used.
Maximum piping length
1. Locate the termination such that the total vent piping from the boiler
to the termination will not exceed the maximum length given in Fig-
ure 23.
2. Maximum lengths listed in
elbows require a reduction in maximum length as explained in the
table notes.
Connecting from termination to boiler
1. Install the terminations as instructed in the following. Then proceed
to page 46 to complete the vent piping between the termination and
the boiler.
550
750
* Install a pipe reducer to adapt from 6" PVC to the 8" PVC pipe size required
at the boiler. You do not have to reduce allowable pipe length for the re-
ducer. Install reducer directly at the boiler, oriented vertically.
** For piping using more than 2 elbows, reduce maximum allowable length:
Determine location for sidewall termination
Place the vent terminations using the following guidelines.
1. Terminate the vent piping with a coupling as shown in
page 33. The coupling must butt against the outside wall plate. If vent
piping is extended outside, install a coupling at the outer plate and
continue vent piping from the coupling (or elbow when snorkeling as
in Figure 24, page 33 right side).
a.
— Boiler Manual
Figure 20, page 27.
Figure 23 allow for 2 elbows. Additional
Maximum piping lengths for DIRECT EXHAUST sidewall
termination
Feet Elbows **
100 2
30 2
A gas vent extending through an exterior wall shall not
terminate adjacent to the wall or below building extensions
such as eaves, parapets, balconies or decks, except as otherwise
instructed in this manual or local codes. Failure to comply
could result in severe personal injury, death or substantial
property damage.
Apply the configuration on the left side of
termination would fail to meet minimum clearance to grade or
snow line.
Feet Elbows **
Not allowed
100 2
Figure 24,
Figure 24 unless the
Part number 550-100-086/0809