D590 Low-Leakage Smoke Damper. CSI 3-Part Specifications.

D590 Low-Leakage Smoke Damper

General

The D590 Low-Leakage Smoke Damper ("Damper") is a parallel-blade damper designed to control the spread of smoke during emergency operation. The Damper is leakage-rated and classified under Underwriters' Laboratories Standard 555S (Class I) for use in smoke control systems. The Damper also meets NFPA 90A requirements.

Features

• Silicone rubber blade seals and side seals for reduced leakage

• Galvanized steel construction for reduced corrosion

• Jackshafted for positive blade action

D590 Low-Leakage Smoke Damper

Description

The D590 Low-Leakage Smoke Damper ("Damper") is a parallel-blade damper designed to control the spread of smoke during emergency operation. The Damper is leakage-rated and classified under Underwriters' Laboratories Standard 555S (Class I) for use in smoke control systems. The Damper also meets NFPA 90A requirements.

 Specifications

Model:

o D590 Low-Leakage Smoke Damper

Single Section Sizes:

NOTE: Dimension A is the nominal frame dimension along the blade length. Dimension B is the nominal frame dimension perpendicular to Dimension A.

 

Dimension A: 6 to 30 in. (152 to 762 mm)
Dimension B: 5 to 24 in. (127 to 610 mm)
Dampers are 1/4 in. (6.3 mm) undersized unless otherwise noted

Multisection Dampers:

No size limitation

Maximum Static Pressure:

4 in. wc

Finish:

Galvanized frame and blades

Frame Construction:

Roll-formed 16-gage galvanized steel, one piece, notched and joined at one corner

Blades:

Roll-formed 22-gage galvanized steel

Double 90-degree bend in blade tips

Double-wrapped edges and centers

Die-crimped blade corners to seal blade/frame joint

External Drive Axles:

1/2-in. (13-mm) diameter zinc-coated steel

External drive axles extend 6 in. (153 mm) beyond frame

UL Standard 555S Leakage Rating:

Class I

Seals:

High-temperature silicone rubber

Bearings:

Formed from blade and rolled into frame

Hardware:

14-gage linkage bracket on both ends of blade, two horizontal sections linked together if driven by one actuator

Blade Orientation:

Horizontal

Damper Mounting:

Vertical or horizontal plane

Actuators:

Pneumatic MP909D, E and MP918A, B

Factory or field mounted

Actuator Sizing and Maximum Approach Velocity:

Actuator Mounting:

External

Temperature Range:

–28 to 250F (–33 to 121C)

Pressure Drop:

0.03 in. wc at 1000 ft/min (5 m/s), full open, typical

Options:

Position indicator switch

Round or oval transition

Factory sleeving:

14 gage by 18 in. (457 mm)

18 gage by 18 in. (457 mm)

Listing:

UL Standard 555S, Leakage Class I: Max. leakage 4 cfm per sq ft at 1 in. wc, 8 cfm per sq ft at 4 in. wc; degradation temperature 250F (121C)

NOTE: Applies only when Damper is used with UL-Listed Honeywell damper actuator intended for D590 Damper, and when Damper and actuator are installed according to instructions provided with Damper.

77-4018

Commercial Bldg Group

MLF TAB: II. E. 2
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