Roof Upblast & Spark Resistant Construction
Roof Upblast
Models QEI-I/II sizes 9 through 54 and model QEID sizes 12 through 54, are available in roof upblast configuration. The roof upblast configuration is ideal for exhausting contaminants away from a building to prevent roof damage and re-entrainment of exhaust air. Both QEI-I/II roof upblast models have the high temperature UL rating and can be used for emergency smoke exhaust applications.
Standard construction includes a fully-welded heavy- gauge curb cap to eliminate leaks, a butterfly damper section for backflow prevention, and a windband section to protect the butterfly dampers from debris. A complete line of roof curbs is available for mounting to a roof deck.
Spark Resistant Construction
Greenheck mixed flow fans are available with spark resistant designs suitable for applications that involve flammable particles, fumes or vapors. Spark resistant construction options adhere to guidelines defined within AMCA Standard 99-0401-10.
| | | The fan wheel is constructed of a |
| | | nonferrous material (aluminum). |
| QEI-I/II | Spark B | A non-ferrous (aluminum) bearing |
| | | cover surrounds the driven bearing, |
| | | shielding it from the airstream. |
| | | |
| | | The inlet cone is constructed of |
| QEI-I/II | | non-ferrous material (aluminum). |
| Spark C | A nonferrous (aluminum) bearing |
| QEI-L |
| | cover surrounds the driven bearing |
| | |
| | | shielding it from the airstream. |
| | | |
