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Details test and examination criteria for unvented heaters for use with natural, manufactured and mixed gases, liquefied petroleum gases, and LP gas-air mixtures. Such heaters are limited to Maximum input ratings of 40,000 Btu per hour.
| Author | ANSI |
|---|---|
| Editor | ANSI |
| Document type | Standard |
| Format | File |
| Confirmation date | 2013-08-07 |
| ICS | 91.140.10 : Central heating systems
|
| Replace | ANSI Z 21.11.2a (2008) |
| Year | 2013 |
| Document history | ANSI Z 21.11.2a (2013) |
| Country | USA |
| Keyword | ANSI Z 21;ANSI 21;21;ANSI Z21.11.2a-2013 |