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Part number 550-100-400/0119
17
Venting/air piping — general (continued)
®
Series 4
gas-fired water boiler — Boiler Manual
.
.
common vent with any other appliance.
See page 16.
Inspect fi nished vent and air piping thoroughly
to ensure all are airtight and comply with the
instructions provided and with all require-
ments of applicable codes.
Failure to provide a properly-installed vent and
air system will cause severe personal injury or
death.
Venting/combustion air piping - Installations
must provide provisions for combustion and
ventilation air in accordance with the sec-
tion “Air for Combustion and Ventilation,” of
the National Fuel Gas Code - ANSI Z223.1/
NFPA54 – latest edition, or Sections 8.2, 8.3,
or 8.4 of Natural Gas and Propane Installation
Code - CAN/CSA B149.1, or applicable provi-
sions of the local building codes.
Use only the materials listed in this manual for
vent and air pipe and fi ttings. Failure to comply
could result in severe personal injury, death or
substantial property damage.
If used, a masonry chimney can ONLY be used
as a PIPE CHASE for vent and air pipes —
The vent and air piping must be installed as
instructed in this manual and all joints must
be sealed. The chimney must be used only for
Ultra boilers. NO OTHER appliance or fi re-
place can be connected to the chimney.
The chimney must be straight, with no offsets,
and the vent and air piping materials must
comply with this instruction manual.
The chimney must be fi tted with a sealed ac-
cess opening, through which the interior of the
chimney can be inspected.
The chimney and liner must be inspected at
least once annually to verify condition.
Failure to comply could result in severe personal
injury, death or substantial property damage.
Combustion air piping
1. Combustion air must be piped from outside to the boiler,
following the instructions in this manual, and compliant with
all applicable codes. Read the warning in Figure 11, page 16,
and ensure the air intake will not be likely to draw in con-
taminated air.
2. Combustion air can be piped individually for each boiler, or
it can be manifolded as shown in Figure 59, page 59 . Air pip-
ing must always terminate on the same side (or roof ) of the
building as the vent.
Vent piping
1. Boiler fl ue gases must be piped from the boiler to outside, fol-
lowing 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 Figure 14, page 18,
and the associated instructions referenced.
2. Each Ultra boiler requires a separate vent. Do not common
vent.
Vent and air piping materials
1. See Figure 13, page 19 for approved vent and air piping
materials.
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