Air For Combustion And Ventilation - Carrier 58SC0B Operating Instructions Manual

58SC0B/58SC1B: Installation, Start–Up, Operating and Service and Maintenance Instructions
WARNING
!
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in personal injury or death,
and unit component damage.
Corrosive or contaminated air may cause failure of parts containing flue
gas, which could leak into the living space. Air for combustion must not
be contaminated by halogen compounds, which include fluoride,
chloride, bromide, and iodide. These elements can corrode heat
exchangers and shorten furnace life. Air contaminants are found in
aerosol sprays, detergents, bleaches, cleaning solvents, salts, air
fresheners, and other household products. Do not install furnace in a
corrosive or contaminated atmosphere. Make sure all combustion and
circulating air requirements are met, in addition to all local codes and
ordinances.
CAUTION
!
FURNACE CORROSION HAZARD
Failure to follow this caution may result in furnace damage.
Air for combustion must not be contaminated by halogen compounds,
which include fluoride, chloride, bromide, and iodide. These elements
can corrode heat exchangers and shorten furnace life. Air contaminants
are found in aerosol sprays, detergents, bleaches, cleaning solvents,
salts, air fresheners, and other household products.

AIR FOR COMBUSTION AND VENTILATION

Provisions for adequate combustion, ventilation, and dilution air must be
provided in accordance with:
• U.S. installations: Section 9.3 of the current edition of NFGC
NFPA54/ANSI Z223.1, Air for Combustion and Ventilation, and
applicable provisions of the local building codes.
WARNING
!
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in personal injury or death.
The operation of exhaust fans, kitchen ventilation fans, clothes dryers,
attic exhaust fans or fireplaces could create a NEGATIVE PRESSURE
CONDITION at the furnace. Make-up air MUST be provided for the
ventilation devices, in addition to that required by the furnace. Refer to
Carbon Monoxide Poisoning Hazard warning in venting section of
these instructions to determine if an adequate amount of make-up air is
available.
The requirements for combustion and ventilation air depend upon
whether or not the furnace is located in a space having a volume of at
least 50 cubic feet per 1,000 BTUh input rating for all gas appliances
installed in the space.
• Spaces having less than 50 cubic feet per 1,000 BTUh require the
OUTDOOR COMBUSTION AIR METHOD.
• Spaces having at least 50 cubic feet per 1,000 BTUh may use the
INDOOR COMBUSTION AIR, STANDARD or KNOWN AIR
INFILTRATION METHOD.
Outdoor Combustion Air Method
1. Provide the space with sufficient air for proper combustion,
ventilation, and dilution of flue gases using permanent horizontal or
vertical duct(s) or opening(s) directly communicating with the
outdoors or spaces that freely communicate with the outdoors.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
2. Fig. 7 illustrates how to provide TWO OUTDOOR OPENINGS,
one inlet and one outlet combustion and ventilation air opening, to
the outdoors.
a. One opening MUST commence within 12-in. (300 mm) of the
ceiling and the second opening MUST commence within 12-in.
(300 mm) of the floor.
b. Size openings and ducts per
c. TWO HORIZONTAL DUCTS require 1 square inch of free area
per 2,000 BTUh (1,100 mm2/kW) of combined input for all gas
appliances in the space per
d. TWO OPENINGS OR VERTICAL DUCTS require 1 square
inch of free area per 4,000 BTUh (550 mm2/kW) for combined
input of all gas appliances in the space per
3. ONE OUTDOOR OPENING requires:
a. 1 square inch of free area per 3,000 BTUh (734 mm2/kW) for
combined input of all gas appliances in the space per
b. Not less than the sum of the areas of all vent connectors in the
space.
* Minimum dimensions of 3 in. (76 mm).
NOTE: Use any of the following combinations of openings: A&B, C&D, D&E, F&G
Fig. 7 – Air for Combustion, Ventilation, and Dilution for Outdoors
* Minimum opening size is 100 in.2 with minimum dimensions
of 3 in. (76 mm).
* Minimum of 3 in. (76 mm), when type -B1 vent is used.
Fig. 8 – Air for Combustion, Ventilation, and Dilution from Indoors
7
Fig. 7 and Table 2.
Fig. 7 and Table 2.
Fig. 7 and Table
Table 2
2.
and
A03174
A03175