Auxiliary blow-open control box for smoke-evacuation release Variant record generated from manufacturer nomenclature (https://www.lcnclosers.com/content/dam/allegion-us-2/web-files/lcn/information-documents/LCN_Automatic_Operators_Catalog_Section_109510.pdf); price inherited from product #1222 pending owner confirmation.
Auxiliary blow-open control box for smoke-evacuation release Variant record generated from manufacturer nomenclature (https://www.lcnclosers.com/content/dam/allegion-us-2/web-files/lcn/information-documents/LCN_Automatic_Operators_Catalog_Section_109510.pdf); price inherited from product #1222 pending owner confirmation.
| Low-voltage wiring | Connection count needs review |
|---|---|
| Preparation | 7949 is the auxiliary blow-open box controlled by the selected smoke-evacuation system; normal Auto Equalizer functions are unavailable while blow-open is active. Plan supported surface mounting, access, suitable ambient location and the exact pneumatic routes before installation. Use the original control-box mounting details and the specified tubing/fittings for the selected system. Confirm compressor requirements and permitted route length for that box family; pneumatic-circuit and door-leaf quantities are not electrical cable-run quantities. Connect the selected hardwired or RF receiver actuator interface separately and test the actual control function. |
| Electrical | The base 7949 box needs a 120V AC input at 1 amp and an earth ground connection. The box is controlled by the building smoke evacuation system, but the supplied text does not document the signal terminals or cable. Cable counts, conductor counts and gauge are not documented for this box. The ES7949 relay output is a separate variant or accessory circuit. |
| Electrical wiring required | Yes |
| Conditional connections | 120V AC power input to the 7949 control box: cable runs quantity unspecified; conductor count unspecified; wire type not documented; size unspecified; shielding unspecified; rating unspecified; endpoints 120V AC supply to 7949 control box; when Installation configuration is Base 7949 box; supply is 120V AC at 1 amp. Cable run count and conductor count are not documented in the supplied text.; Earth ground connection for the control box: cable runs quantity unspecified; conductor count unspecified; wire type not documented; size unspecified; shielding unspecified; rating unspecified; endpoints 7949 control box to Earth ground; when Installation configuration is Base 7949 box; the box must be connected to earth ground. Whether this is a separate conductor or part of the supply cable is not documented. |
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