LCN 7949 Pneumatic Control Box with Auxiliary Blow-Open

LCN 7949 Pneumatic Control Box with Auxiliary Blow-Open

A heavy duty, surface mounted control box contains one or two electrically controlled pneumatic circuits. Air filtration, pneumatic regulation, and system timing is performed by the control box. 7980 Series control boxes also contain a built-in air pump to power the system. Each pneumatic circuit can be adjusted for a hold open time up to 30 seconds. Output air pressure can be adjusted to precisely tailor system to individual door requirements.

Pneumatic connections use standard barbed fittings and 925 tubing from the compressor to the control box to the operator. A package of barbed tee and butt connectors are supplied with each control box to simplify installations.

Dimension: 15" x 15" x 6"

• Auxiliary “blow-open” box works with or without 7901 or 7902 and one or two Auto Equalizers
• Controlled by smoke evacuation system, the 7949 open the door(s) to allow fresh air into the building
• Normal Auto Equalizer functions are not available when “blowopen” box is activated

Product Type: Pneumatic Control Box

Optional “ES” Boxes
• Identical in function(s) to the basic box but includes an isolated (SPDT) relay with 1 set of Normally Open (N.O.) and Normally Closed (N.C.) contracts to control an electric strike
• The LCN control box cannot power the strike. ES7949 has two sets of isolated (DPDT) contacts. Compressor size recommendations are based on normal usage for the number of operations listed
• All LCN supplied auxiliary compressors include an automatic drain feature

Model: LCN 7949, 7949ES