Optional Room Air - Cadet 40-120 Installation And Service Manual

3
General venting

Optional room air

Optional room air is intended for
NOTICE
commercial applications. Combustion air
piping to the outside is recommended for
residential applications.
Commercial applications utilizing the Cadet heating 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 3C).
• 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.
When utilizing the single pipe method,
WARNING
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.
Table 3C Optional Room Air Kit
Model
40 - 100
120
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.
18
Kit Number
KIT30051
KIT30052
Installation & Service Manual
Please read the information given in Table 1A, page 10,
listing contaminants and areas likely to contain them.
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
WARNING
in a laundry room or pool facility, for
example, these areas will always contain
hazardous contaminants.
To prevent the potential of severe personal
WARNING
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.
• Relocate air inlet and vent
terminations to other areas.
If
—OR—