18
5- VENTILATION & COMBUSTION AIR
Room Cubic Feet Volume
#
Sections
Input
BTU/HR
Standard
Method
Known Air Inltration Rate Method (ACH - Air Changes Per Hour)
0.1 0.2 0.3 0.4 0.5 0.6
3 59,000 2950 12390 6195 4130 3098 2478 2065
4 92,500 4625 19425 9712.5 6475 4856 3885 3238
5 120,000 6000 25200 12600 8400 6300 5040 4200
6 149,000 7450 31290 15645 10430 7823 6258 5215
7 175,000 8800 36960 18480 12320 9240 7392 6160
8 205,000 10250 43050 21525 14350 10763 8610 7175
9 235,000 11750 49350 24675 16450 12338 9870 8225
Table 5-1 - Space With Boiler Only
5.1 Requirements
National Fuel Gas Code
Natural Gas and Propane Installation
Code
building codes.
•
•
per
[(BTU/
•
3
1,000
B.
3
•
enclosure.
in enclosure.
[(BTU/
appliances in enclosure.
B.
•
•
•
•
•
or structure where boiler is installed, including air
WARNING
Do not obstruct air openings. Follow instructions
!
[(BTU/
PN 240012889 Rev. A [07/31/2020]
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