D570 and D580 Combination Fire/Smoke Dampers. CSI 3-Part Specifications.

D570 and D580 Combination Fire/Smoke Dampers

General

The D570 and D580 Low-Leakage, Fire/Smoke Combination Dampers ("Dampers") are parallel-blade dampers designed for use in conventional air handling systems to control the spread of fire and smoke during emergency operation. The Dampers are leakage-rated and classified under Underwriters' Laboratories (UL) Standards 555 and 555S (Class I, II, and III) for use in fire and smoke control systems. The Dampers also meet NFPA 90A requirements.

The D570 Damper has a one-time fusible link. The D580 Damper has a resettable link.

 Features

• Silicone rubber blade seals and side seals for reduced leakage (Class I and II)
• Galvanized steel construction for reduced corrosion
• Jackshafted for positive blade action

Description

The D570 and D580 Low-Leakage, Fire/Smoke Combination Dampers ("Dampers") are parallel-blade dampers designed for use in conventional air handling systems to control the spread of fire and smoke during emergency operation. The Dampers are leakage-rated and classified under Underwriters' Laboratories (UL) Standards 555 and 555S (Class I, II, and III) for use in fire and smoke control systems. The Dampers also meet NFPA 90A requirements. The D570 Damper has a one-time fusible link. The D580 Damper has a resettable link.

Specifications

Models:

• D570 Damper with one-time fusible link
• D580 Damper with resettable link

 

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.

 

Damper Dimensions for UL Standard 555S, Classes I, II, and III.

 

Multisection Dampers:

Maximum dimensions for vertical damper orientation (A = Dimension A, B = Dimension B): A 120 x B 30 in. (A 3048 x B 762 mm) or A 72 x B 84 in. (A 1829 x B 2137 mm)

NOTE: Maximum dimensions in these two ranges are allowable. However, both Dimensions A and B must be equal to or less than their respective limits. For example, if Dimension A = 80 in. (less than the 120-in. limit in the first range), Dimension B cannot exceed 30 in. (the other limit in the first range); if Dimension A = 70 in. (less than the 72-in. limit in the second range), Dimension B cannot exceed 84 in. (the other limit in the second range).

Maximum dimensions for horizontal damper orientation: 52 x 42 in. (1321 x 1067 mm)

NOTE: UL Standard 555 limits multisection Dampers to four sections.

 

Maximum Approach Velocity:

 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

Blade Seals:

High-temperature, silicone rubber (Class I and II only)

Bearings:

Formed from blade and rolled into frame

D570 Fuse Link and D580 Resettable Link Ratings:

Standard: 165F (74C)

Optional: 212F (100C) or 286F (141C)

Hardware:

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

Blade Orientation:

Horizontal

Damper Mounting:

Vertical or horizontal plane

Maximum Static Pressure:

4 in. wc

Actuator Mounting:

External

Actuators:

Pneumatic MP909D, E, and MP918A, B

Factory or field mounted

Actuator Sizing:

Max. of 2 Damper sections joined along the "A" dimension actuated by one MP909E or MP918A, B

Temperature Range:

–40 to 250F (–40 to 121C)

NOTE: Low temperature limit depends on actuator specifications. See MP909D Pneumatic Damper Actuator Specification Data 77-9870, MP909E Pneumatic Damper Actuator Specification Data 77-9030, or MP918A and B Pneumatic Damper Actuator Specification Data 77-3080.

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:

NOTE: Listings apply only when Dampers are used with UL-Listed Honeywell damper actuators intended for D570 and D580 Dampers, and when Dampers and actuators are installed according to instructions provided with product shipment.

UL Standard 555 1-1/2 hour rating

UL Standard 555S as follows:

77-4017

Commercial Bldg Group
MLF TAB: II. E. 2
7-91