Direct Exhaust Venting - General - Weil-McLain Ultra Manual Addendum

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GAS FIRED WATER BOILER
DIRECT EXHAUST venting — general
Vent and air piping materials
1. See Figure 5, page A-7 for approved vent and air piping materials,
for both
direct exhaust
Use the same vent or air piping material through-
out. — Do not connect different types of piping to-
gether.
Vent piping
1. Boiler flue gases must be piped from the boiler to outside, following
the instructions in this manual, and compliant with all applicable
codes. The vent pipe must terminate either through the sidewall
or through the roof, located with the correct separation from the
air termination. See the associated instructions in the following
pages.
2. Each Ultra boiler requires a separate vent.
vent.
Combustion air openings for direct exhaust
Provide combustion air openings to boiler room
and building.
exhaust boilers is provided from the boiler room. Follow
all instructions in the Boiler manual and this addendum
plus all applicable codes, providing combustion air open-
ings as specified. Failure to comply could result in severe
personal injury, death or substantial property damage.
1. Combustion air must be supplied through openings into the boiler
room, following the instructions in this manual, and compliant
with all applicable codes. Read the warning in Figure 1, page A-2,
and ensure the air and boiler room will not contain contaminated
air.
2. Where the Ultra boiler shares a space with other appliances, the
combustion air openings must be sized to handle the combined
requirements of all appliances in the space.
SIDEWALL direct exhaust option
1. Read and follow instructions in Boiler manual, including page 61
for Massachusetts installations when applicable.
2. Read and follow instructions in Venting addendum
through page A-7.
3. Then go to Venting addendum
VERTICAL direct exhaust option
1. Read and follow instructions in Boiler manual, including page 61
for Massachusetts installations when applicable.
2. Read and follow instructions in Venting addendum
through page A-7.
3. Then go to Venting addendum
Every vent pipe requires a
nation . Bird screens are not supplied with the Ultra
boiler. Purchase separately from Weil-McLain.
Part number 550-100-103/1110
— Manual addendum — Venting
and .
direct vent
DO NOT
Combustion and ventilation air for direct
page A-22.
page A-25.
bird screen at its termi-
DIRECT EXHAUST
common
DIRECT EXHAUST
page A-2
page A-2
SIDEWALL
VERTICAL
A–19