I see where NFMA 58 Appendix I shows minimum spacing requirements for DOT cylinders up to 100# not filled on site:
Ralph
- 3' min from cyl to crawl space opening
- 3' min from cyl to edge of window
- 5' min from cyl to intake to direct vent appliance
- 5' min btw relief valve discharge and external source of ignition (AC, direct vent, or mechanical venitalition system (attic fan)
Ralph