15
Figure 13: Installation of FO in a Confined Space with Remote Chimney
NOTE:
1. Type L Vent Material generally means stainless steel inner liner and stainless steel outer covering and separated with 1"
thick special high temperature insulation - factory assembled and rated.
2. In a confined space, provide ventilation air to the burner and size such ventilation air openings to provide not less than 28
square inches free area per gallon of fuel input to the burner.
3. Keep right side of boiler accessible for flue cleanout and tankless coil maintenance.
4. Boiler is heavily insulated and is suitable for 1" clearance from jacket surface to combustibles.
5. Boiler is of wet base design and suitable for installation on combustible floors.
6. The original installation may have been under poor or outdated building codes. Replacement boilers are subject to codes
in effect at the time of replacement. Be sure to consult with local code officials before starting replacement.
7. Copies of NFPA 211 are available from National Fire Protection Association, Battery March Park, Quincy, MA 02269 or
at your local fire code officers office.
IV: VENTING (NATURAL VENT - CHIMNEY) (continued)
