Ward Industries Inc. - Ceiling Radiation Dampers

CEILING RADIATION DAMPERS
Model 50 UL Listed CRD

Type EA
	Rollformed 22 gauge galvanized frame Formed 22 gauge galvanized blades Rollformed 22 gauge galvanized hinge Double blade butterfly configuration Available in both easy access (EA) and link plate (LP) versions for mounting the fusible link Minimum unit size: 4”x4” Maximum unit size: 24”x24” Dimensions are determined by blade width (hinge dimension) then by blade height (w x h) Insulation and scrim are required on dampers over 80 in² in area Insulation and scrim are optional on dampers less than 80 in² in area UL Listed ceiling radiation damper Tested to UL 555C: File R16579 Meets NFPA 90A requirements Listed with California State Fire Marshall: Listing 3225-1577:101 Reference 50/55 Series sizing chart for damper sizing Reference 50 Series Installation Instructions
Submittal Drawing

Type LP

Submittal Drawing






Sizing Chart
Instructions for Ducted
Instructions for Non-Ducted
Instructions for Wood & Gypsum with 2x4 Bracing and Un-Insulated Plenums
Instructions for Wood & Gypsum with Angle Bracing and Un-Insulated Plenums
Instructions for Wood & Gypsum with Insulated Plenums



Model 50-4X UL Listed CRD

Type EA	Rollformed 22 gauge galvanized frame Formed 22 gauge galvanized blade Stainless steel spring hinge Single blade configuration Available sizes: 8”x4”, 10”x4” and 12"x4” Dimensions are determined by blade length (hinge dimension) then by blade width Insulation and scrim are optional on dampers less than 80 in² in area UL Listed ceiling radiation damper Tested to UL 555C: File R16579 Meets NFPA 90A requirements Listed with California State Fire Marshall: Listing 3225-1577:101 Reference 50 Series Installation Instructions

Submittal Drawing






Sizing Chart
Instructions for Ducted
Instructions for Non-Ducted
Instructions for Wood & Gypsum with 2x4 Bracing and Un-Insulated Plenums
Instructions for Wood & Gypsum with Angle Bracing and Un-Insulated Plenums
Instructions for Wood & Gypsum with Insulated Plenums

Model 55 UL Listed CRD

Type EA
	Rollformed 22 gauge galvanized frame Formed 22 gauge galvanized blades Rollformed 22 gauge galvanized hinge Double blade butterfly configuration Available in both easy access (EA) and link plate (LP) versions for mounting the fusible link Minimum unit size: 4” diameter Maximum unit size: 24” diameter Insulation and scrim are required on dampers over 80 in² in area Insulation and scrim are optional on dampers less than 80 in² in area UL Listed ceiling radiation damper Tested to UL 555C: File R16579 Meets NFPA 90A requirements Listed with California State Fire Marshall: Listing 3225-1577:101 Reference 50/55 Series sizing chart for damper sizing Reference 55 Series Installation Instructions
Submittal Drawing

Type LP

Submittal Drawing







Sizing Chart
Instructions for Ducted
Instructions for Non-Ducted
Instructions for Wood Truss with Un-Insulated Plenums
Instructions for Wood Truss with Insulated Plenums



Model CRD B CRD-Boot Assembly

	UL Listed ceiling radiation damper factory mounted in a galvanized boot Available in the following styles: End boot Ell boot (90^o) Straight boot Available with collars ranging from: 4” to 10” Available with throat depths of: 4” 6” 8” Available with or without a flange Factory assembled to ensure proper fit and placement Eliminates the need for labor to install in the field Reference CRD Installation Instructions

Submittal Drawing