Control box, single door / single pneumatic circuit, needs compressor 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.
Control box, single door / single pneumatic circuit, needs compressor 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 | 7901 has one pneumatic circuit and requires a separate compressor. 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 7901 needs a 120V AC input and has a 12V DC output (0.25 amp max). Its single circuit takes Normally Open inputs from hardwired or RF actuator/receiver combinations. In the wired example diagram, the control box connects by 12V DC wiring to the actuators; the compressor has its own 120V AC input. Conductor counts and cable runs are not documented in the supplied text. |
| Conditional connections | 120V AC mains power input to control box: cable runs quantity unspecified; conductor count unspecified; wire type not documented; size unspecified; shielding unspecified; rating unspecified; endpoints 120V AC supply to 7901 control box; when Installation configuration is Base 7901 control box; 120V AC @ 1 amp input per manufacturer notes; earth ground connection also required; Pneumatic air supply tubing from compressor to control box: cable runs quantity unspecified; conductor count unspecified; wire type not documented; size unspecified; shielding unspecified; rating unspecified; endpoints separate compressor to 7901 control box; when Installation configuration is This is pneumatic tubing, not an electrical cable. A separate compressor is required for the 7901 (up to 500 ft shown in diagram).; Isolated SPDT relay contacts for an electric strike (ES versions only): cable runs quantity unspecified; conductor count unspecified; wire type not documented; size unspecified; shielding unspecified; rating unspecified; endpoints ES relay package -3390A to electric strike; when Installation configuration is Optional accessory selected: IF the ES relay package -3390A is selected (ES7901 or converting a 7901); the control box cannot power the strike |
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