Installation & Operation Manual
17
3
General venting
(continued)
Vent, air piping and termination:
The Knight boiler vent and air piping can be installed through
the roof or through a sidewall. Follow the procedures in this
manual for the method chosen. Refer to the information in
this manual to determine acceptable vent and air piping
length.
Air contamination
Pool and laundry products and common household and
hobby products often contain fluorine or chlorine
compounds. When these chemicals pass through the boiler,
they can form strong acids. The acid can eat through the
boiler wall, causing serious damage and presenting a possible
threat of flue gas spillage or boiler water leakage into the
building.
Please read the information given in Table 1, page 11, listing
contaminants and areas likely to contain them.
If
contaminating chemicals will be present near the location of
the boiler combustion air inlet, have your installer pipe the
boiler combustion air and vent to another location, per this
manual.
If the boiler combustion air inlet is
located in a laundry room or pool facility,
for example, these areas will always
contain hazardous contaminants.
To prevent the potential of severe personal
injury or death, check for areas and
products listed in Table 1, page 11 before
installing the boiler or air inlet piping.
If contaminants are found, you MUST:
• Remove products permanently.
—OR—
• Relocate air inlet and vent
terminations to other areas.
Removing from existing vent
Follow the instructions in Section 1, page 11 of this manual
when removing a boiler from an existing vent system.
Vent and air piping
Vent and air system:
Installation must comply with local
requirements and with the National Fuel
Gas Code,
ANSI Z223.1 for U.S.
installations or CSA B149.1 or B149.2 for
Canadian installations.
You must also install air piping from outside to the boiler air
intake adapter. The resultant installation is direct vent (sealed
combustion).
You may use any of the vent/air piping methods covered in
this manual. Do not attempt to install the Knight boiler using
any other means.
DO NOT mix components from different
systems.
The vent system could fail,
causing leakage of flue products into the
living space. Use only PVC, CPVC, or ABS
pipe and fittings, with primer and cement
specifically designed for the material used.
NOTICE
WARNING
WARNING
WARNING
