Part 5 - Vent /air - intake termination clearances
Warning
Extra precaution must be taken to adequately support the weight of the Vent/Air-Intake piping in applications
using roof-top terminations. Failure to follow these instructions may result in venting or appliance component
failure resulting in flue gas spillage leading to property damage, serious injury or death.
Warning
Under no circumstances may an existing chimney or chase-way be used to vent or provide combustion intake air
to the
boiler. Failure to follow these instructions will result in fire, property damage, serious injury or
death.
Warning
Do not install the
boiler into a common venting system with any other appliances. Failure to comply with
this warning can cause flue gas spillage and leech carbon monoxide emissions into the surrounding air resulting
in serious injury or death.
Warning
Only install a new boiler with a new venting system, never re-use the existing system.
Removal of an existing boiler from a common venting system
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 remaining appliances connected to it. Instructions have been provided on how to
remove the existing boiler and how to resize the remaining venting system. Failure to follow these instructions
may result in property damage, serious injury or death.
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.
1.
Seal any unused openings in the common venting system.
2.
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.
3.
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.
4.
Place in operation the appliance being inspected. Follow the lighting instructions. Adjust thermostat
so appliance will operate continuously.
5.
Place in operation the appliance being inspected. Follow the lighting instructions. Adjust thermostat
so appliance will operate continuously.
6.
After it has been determined that each appliance remaining connected to the common venting system
properly vents when tested as outlined herein, return doors, windows, exhaust fans, fireplace
dampers, and any other gas-burning appliance to their previous conditions of use.
7.
Any improper operation of common venting system should be corrected so the installation conforms
with with CSA B149.1.
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R Series
R Series