IBC Technologies VFC 160 Installation And Operating Instructions Manual - page 5
IBC Technologies Inc.
- 5 -
VFC 160
1.4 Venting
All venting must be installed in
accordance with the requirements of the
jurisdiction having authority: in the USA
Part 7, Venting of Equipment of the
National Fuel Gas Code, ANSI 223.1,
latest edition, and any other local
building codes are to be followed. In
Canada, Part 7 - Venting Systems of the
B149 Code 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.
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.
a) seal any unused opening in the
common venting system.
b) Visually inspect the venting system
for proper size and horizontal pitch
and determine there is no blockage
or restriction, leakage, corrosion and
other deficiencies which could cause
an unsafe condition.
c) Insofar as is practical, close all
building doors and windows and all
doors between the space in which the
appliances remaining connected to
the common venting system are
located and other spaces of the
building. Turn on clothes dryers and
any appliance not connected to the
common venting system. Turn on
any exhaust fans, such as range
hoods and bathroom exhausts, so
they will operate at maximum speed.
Do not operate a summer exhaust
fan. Close fireplace dampers.
d) Place in operation the appliance
being inspected. Follow the lighting
instructions. Adjust thermostat so
appliance will operate continuously.
e) After it has been determined that
each appliance remaining connected
to the common venting system
properly vents when tested as
outlined above, return doors,
windows, exhaust fans, fireplace
dampers and any other gas-burning
appliance to their previous
conditions of use.
f) Any improper operation of the
common venting system should be
corrected so the installation
conforms with the National Fuel Gas
Code, ANSI Z223.1 - latest edition.
In Canada, all installations must
conform with the current CAN/CGA
- B149 Installation Code and/or local
codes.
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 CAN/CGA - B149 Installation Code.
1.4.1 Applications
The VFC 160 boiler is approved with
alternative venting options: either Direct
Vent or Category IV venting can be used
offering flexibility to meet the specific
requirements of the installation. With the