IBC VFC 15-150 Installation And Operating Instructions Manual page 10

WARNING
Venting, condensate
drainage, and combustion
air systems for all IBC
boilers must be installed in
compliance with all applicable
codes and the instructions of
their respective Installation
Manuals.
Inspect finished vent and air
piping thoroughly to ensure
all are airtight and comply
with the instructions provided
and with all requirements of
applicable codes.
Failure to comply will result
in severe personal injury or
death.
WARNING
Covering non-metallic vent
pipe and fittings with thermal
insulation shall be prohibited.
1-4
VFC 15-150, VFC 45-225 MODULATING GAS BOILERS
determine there is no blockage or restriction, leakage, corrosion and other
deficiencies which could cause an unsafe condition.
•
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.
•
Place in operation the appliance being inspected. Follow the lighting
instructions. Adjust thermostat so appliance will operate continuously.
•
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.
•
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 - B149.1-10 Installation Code and/or local codes.
1.4.1 Applications
All VFC-series boilers are approved with alternative venting options: either 2-pipe
Direct Vent or single pipe /Indoor Air venting can be used offering flexibility to
meet the specific requirements of the installation. With the Direct Vent case,
combustion air is piped directly to the boiler's air intake from outdoors (see
Section 1.4 for air intake piping requirements). Using the indoor air alternative, air
for combustion is drawn from the indoor air surrounding the boiler.
Provided the maximum overall vent length limit is not exceeded, the installer may
choose to vent the boiler through the wall, directly through the roof or upward
using an existing - but otherwise unused - chimney as a vent raceway.
1.4.2 Exhaust Vent Material
EXHAUST VENT MATERIAL – CANADA
Use Polypropylene (PPs) or CPVC vent systems approved under ULC-S636
Standard for Type BH Gas Venting Systems, or stainless steel Type BH venting
systems. Permitted PPs materials comprise Single Wall Rigid pipe and fittings
and Flexible.
•
ULC-S636 CPVC: 90°C (194°F)
•
ULC-S636 PPs: 110°C (230°F)
In the standard configuration, VFC series boilers can supply water temperatures
up to 190°F, leaving stack temperatures above the 65°C (149°F) limit for
ULC-S636 approved PVC.
For long vent runs with higher initial exhaust temperature, some jurisdictions
may allow the use of mixed materials for economy: ULC-S636 approved CPVC
for the initial run followed by ULC-S636 approved PVC to the termination (It is
the responsibility of the Installer to confirm that local codes will allow this option).
Ensure appropriate transition glue is used. The installer is responsible to ensure
INSTALLATION AND OPERATION INSTRUCTIONS