Exhaust Venting And Air Intake - IBC VFC 15-150 Installation And Operating Instructions Manual

WARNING
Exposed water piping and
associated components
(relief valves, circulators, etc.)
should not be in contact with
combustible materials. Check
local codes for required
clearances and/or provide
adequate insulation.
DANGER
Do not common vent the VFC
modulating series boilers
with any other existing or new
appliance.
WARNING
DO NOT MOUNT THIS
BOILER TO HOLLOW
WALL STRUCTURES - The
combined weight of the
boiler, its water contents
and associated piping
components can exceed 225
pounds. Fasteners must be
rated for this strain, and must
be firmly anchored into solid
material that will support this
weight.
Installers are to take all
necessary precautions
to avoid injury during the
installation of this boiler.
INSTALLATION
VFC 15-150, VFC 45-225 MODULATING GAS BOILERS
sources. Do not seal boiler case openings directly when firing - allow for
air circulation and ventilation in the immediate area.
SURFACE
Front
Rear
Left Side
Right Side
Top
Table 2 - Clearance from boiler cabinet
Distance below the boiler of up to 15" is required to provide clearance for
the inlet and exhaust venting together with the required condensation trap.
See page 1-15.
1.4

EXHAUST VENTING AND AIR INTAKE

It is important to carefully plan the installation to ensure the appropriate
vent materials, travel and termination decisions are incorporated. Specific
attention is warranted to manage the impact of the steam plume normally
experienced at the exhaust terminal of a condensing boiler. Generally,
intake and exhaust pipes should terminate at a rooftop or sterile wall
location, to maximize customer satisfaction. Keep exhaust plumes
well away from all building air intakes including those of neighbouring
properties.
All venting must be installed in accordance with the requirements of the
jurisdiction having authority: in Canada, Part 8, Venting Systems of the B149.1-
10 Code and any other local building codes are to be followed. In the USA
the National Fuel Gas Code, ANSI 223.1, latest edition, prevails. Where there
is a discrepancy between the installation instructions below, and the code
requirements, the more stringent shall apply.
IMPORTANT
When an existing boiler is removed from a common venting system, the common
venting system is likely to be too large for proper venting of the appliances
remaining connected to it.
When resizing any portion of the common venting system, the common venting
system should be resized to approach the minimum size as determined using the
appropriate tables in the National Fuel Gas Code, ANSI Z223.1 - latest edition. In
Canada, use the B149.1-10 Installation Code.
At the time of removal of an existing boiler the following steps shall be followed
with each appliance remaining connected to the common venting system placed
in operation, while the other appliances remaining connected to the common
venting system are not in operation.
•
Seal any unused opening in the common venting system.
•
Visually inspect the venting system for proper size and horizontal pitch and
DISTANCE FROM
COMBUSTIBLE
SURFACES
2"
0"
0"
2"
6"
RECOMMENDED
DISTANCE FOR
SERVICE
24"
0"
8" (for vent run)
18"
10"
1-3