Lochinvar KNIGHT 51 - Manual (Page 20)

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.
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 1A, page 10 before
installing the boiler or air inlet piping.
If contaminants are found, you MUST:
• Remove contaminants permanently.
—OR—
• Relocate air inlet and vent
terminations to other areas.
ƽ WARNING
ƽ WARNING
Optional room air
Commercial applications utilizing the Knight wall mount
boiler may be installed with a single pipe carrying the flue
products to the outside while using combustion air from the
equipment room. In order to use the room air venting option
the following conditions and considerations must be
followed.
• The unit MUST be installed with the appropriate
room air kit (Table 3D).
• The equipment room MUST be provided with
properly sized openings to assure adequate
combustion air. Please refer to instructions provided
with the room air kit.
• There will be a noticeable increase in the noise level
during normal operation from the inlet air opening.
• Using the room air kit makes the unit vulnerable to
combustion air contamination from within the
building. Please review Section 1, Prevent
Combustion Air Contamination, to ensure proper
installation.
• Vent system and terminations must comply with the
standard venting instructions set forth in this
manual.
ƽ WARNING
When utilizing the single pipe method,
provisions for combustion and ventilation
air must be in accordance with Air for
Combustion and Ventilation, of the latest
edition of the National Fuel Gas Code,
ANSI Z223.1, in Canada, the latest edition
of CGA Standard B149 Installation Code
for Gas Burning Appliances and
Equipment, or applicable provisions of the
local building codes.
Model Kit Number
51 - 211 KIT30051
Table 3D Optional Room Air Kit
NOTICE
Optional room air is intended for
commercial applications. Combustion air
piping to the outside is recommended for
residential applications. Please read the information given in Table 1A, page 10, 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.
20
3
General venting
Installation & Operation Manual