Amana GMSS9 Series Service Instructions Manual page 17

INSTALLATION CONSIDERATIONS
(1) For appliances other than fan-assisted, calculate using the following
equation:
Required Volume > ________ _________
other
(2) For fan-assisted appliances, calculate using the following equation:
Required Volume > ________ _________
fan
where:
I = all appliances other than fan-assisted input in Btu per
other
hour
I = fan-assisted appliances input in Btu per hour
fan
ACH = air change per hour (percent of volume of space exchanged
per hour, expressed as a decimal)
(3) For purposes of this calculation, an infiltration rate greater than
0.60 ACH shall not be used in the equations in 9.3.2.2(1) and
9.3.2.2(2).
9.3.2.3 Indoor Opening Size and Location. Openings used to connect
indoor spaces shall be sized and located in accordance with the follow-
ing:
(1)*Combining spaces on the same story. Each opening shall have a
minimum free area of 1 in.
input rating of all appliances in the space but not less than 100 in.
2
(0.60m ). One opening shall commence within 12 in. (300 mm) of
the top, and one opening shall commence within 12 in. (300 mm) of
the bottom, of the enclosure [see Figure A.9.3.2.3(1)]. The mini-
mum dimension of air openings shall be not less than 3 in. (80 mm).
NOTE: Each opening must have
a free area of not less than one
square inch per 1000 BTU of
the total input rating of all equip-
ment in the enclosure, but not
less than 100 square inches.
Figure A.9.2.3.3.(1) All Combustion Air from Adjacent
Indoor Spaces through Indoor Combustion Air Openings.
(2) Combining spaces in different stories. The volumes of spaces in
different stories shall be considered as communicating spaces where
such spaces are connected by one or more openings in doors or
floors having a total minimum free area of 2 in.
2
mm /kW) of total input rating of all appliances.
9.3.3 Outdoor Combustion Air. Outdoor combustion air shall be pro-
vided through opening(s) to the outdoors in accordance with the meth-
21 ft 3 I
( )
other
ACH 1000 Btu/hr
3
15 ft I
( )
fan
ACH 1000 Btu/hr
2 2
/1000Btu/hr (2200 mm /kW) of the total
Chimney or Gas Vent
Water
Heater
Furnace
2
/1000 Btu/hr (4400
ods in 9.3.3.1 or 9.3.3.2. The minimum dimension of air openings shall
not be less than 3 in. (80 mm).
9.3.3.1 Two Permanent Openings Method. Two permanent open-
ings, one commencing within 12 in. (300 mm) of the top and one com-
mencing within 12 in. (300 mm) of the bottom, of the enclosure shall be
provided. The openings shall communicate directly, or by ducts, with
the outdoors or spaces that freely communicate with the outdoors, as
follows:
(1)* Where directly communicating with the outdoors or where commu-
nicating to the outdoors through vertical ducts, each opening shall
have a minimum free area of 1 in.
total input rating of all appliances in the enclosure. [See Figure
A.9.3.3.1(1)(a) and Figure A.9.3.3.1(1)(b).]
Chimney or Gas Vent
Furnace
2
Alternate
air inlet
Figure A.9.3.3.1(1)(a) All Combustion Air From Outdoors -
Inlet Air from Ventilated Crawl Space and Outlet Air
Chimney or Gas Vent
Opening
Opening
Water
Heater
Furnace
Figure A.9.3.3.1(1)(b) All Combustion Air
From Outdoors through Ventilated Attic.
(2)* Where communicating with the outdoors through horizontal ducts,
each opening shall have a minimum free area of 1 in.
(1100 min 2 /kW) of total input rating of all appliances in the enclo-
sure. [See Figure A.9.3.3.1(2).]
2 /4000 Btu/hr (550 min
Ventilation louvers
(each end of attic)
NOTE: The inlet and outlet air
openings must each have a free
area of not less than one square
inch per 4000 BTU of the
total input rating of all equipment
in the enclosure.
Outlet Air
Water
Heater
Inlet Air
Ventilation louvers for
unheated crawl space
to Ventilated Attic.
Ventilation louvers
(each end of attic)
NOTE: The inlet and outlet air
openings must each have a free
area of not less than one square
inch per 4000 BTU of the
total input rating of all equipment
in the enclosure.
Outlet Air
Inlet air duct
[ends 1 ft (300 mm)
above floor]
2 /kW) of
2 /2000 Btu/hr
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