MA1
Combination Fire / Smoke Damper
Class I • 250°F or 350°F • 1½ Hour • Galvanized Steel • Airfoil Blade
STANDARD CONSTRUCTION
Frame
Frame Type
Blade
Blade Type
Axle materials
Axle Bearings
Linkage
Blade Seal
Jamb Seal
Closure Device
Closure Temp.
: 16-GA galvanized steel
: 5½" X ⅞" Galvanized steel Hat Channel
: 20-GA Double skin ( equivalent to 14-GA )
: Airfoil type
: Plated Solid Steel stub
: Oil impregnated bronze
: Plated steel angle & crank plates with stainless steel
pivots; In-jamb type
: Silicone
: Stainless steel
: Electric heat responsive device
: 165º F (73ºC)
OPTIONS
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Exact Size (no undercut)
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Actuators - 230V, 24V, 120V or Pneumatic
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Right Hand and/or Internal Actuator Mounting Locations (Restrictions Apply)
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Dual Position Indication (DPI) Switches
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Sensotherm Re-Openable Heat Response Device (ESOT) for Electric Actuator
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Sensotherm Re-Openable Heat Response Device (PSOT) for Pneumatic Actuator
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Model SM-501 Flow-Rated Smoke Detector
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Model 2151 No-Flow Smoke Detector (12” Minimum Damper Height)
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Momentary Test Switch
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Remote Test Box
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Transformers
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Tab-Lock Retaining Angles
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Stainless Steel Bearings
-
Stainless Steel Axles
-
Security Bars
-
Copper Tubing (for Pneumatic Actuators)
-
Sleeves of Various Depths and Gauge Thicknesses (restriction apply)
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No Sleeves (restriction apply)
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Round or Oval Transitions
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Short-Width (<8”) and/or Short-Height (<6”) Transitions
DATA SHEETS
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Installation Instruction
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Supplementry Information
NOTES
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Damper frames are provided approximately ¼ undersized. The addition of a sleeve will increase the size of the assembly.
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Damper with smoke detector must have a minimum sleeve of 19” (10.5” on the actuator side and 3” on the non-actuator side).
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Dampers for horizontal installation can only be mounted in a fire barrier constructed of masonry/concrete materials.