Honeywell D2, D3 Data Sheet

D2 (Former D642), D3 (Former D640)

CONTROL DAMPERS

PRODUCT DATA

Honeywell International, Inc. certifies that the models D2, and D3 shown herein are licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 511 and comply with the requirements of the AMCA Certified Ratings Programs. The AMCA Certified Ratings Seal applies to air performance ratings only. March 2008.

The D2, D3 Control Dampers are ruggedly built with 3-V style blades for application as automatic control or manual balancing dampers in low to medium pressure and velocity systems. A wide range of electric or pneumatic actuators are available for these models.

The D2 series is an ultra low leakage control damper which includes blade and jamb seals.The D3 series is a general purpose damper intended for applications where low leakage performance is not necessary.

FEATURES

Frame:

• Standard frames utilize heavy-duty 5 in. (12.7 cm) x 1 in. (0.25 cm) 16 ga. galvanized steel hat channel frame, designed for installation inside ductwork. Reinforced corners. Low profile head and sill on dampers less than 17 in. (43.2 cm) high.

Frame Options:

• Stainless steel and aluminum (14 and 12 gage galvanized steel only).

• Single flange (either side of frame) or double flange (both sides of frame). (See Fig. 2.)

Flange:

• Additional 1 1/2 in. on each side.

Blades:

• Standard 3-V blades are fabricated from a single thickness of 16 ga. galvanized steel incorporating three longitudinal structural V-grooves (each running the full length of the blade). (See Fig. 1.) This blade has low to medium velocity and pressure capabilities.

Axles:

• 1/2 in. (1.3 cm) diameter square plated steel axles positively locked to the blades eliminate slippage between blades and axles. Removable shaft extends 6 in. (15.2 cm) beyond frame. Optional stainless steel construction.

Bearings:

• Molded synthetic (acetal) bearings rotate in a polished extruded frame raceway. Extremely low friction and long operating life result from this advanced design. Bronze or stainless steel bearings are optional.

Linkage:

• Blade-to-blade linkage (for parallel or opposed blade action) is concealed within the frame.

• Linkage is engineered to accurately control each and every blade without need for adjustment. Plated steel construction ensures a long corrosion free life.

Seals:

• D2 Only: Flexible stainless steel compression-type jamb seals (between blade ends and side frames) and extruded vinyl blade seals (between blade edges) reduce leakage. Silicone or blade seals are optional.

Sizing:

• Nominal sizing results in 1/4 in. undersizing on each side. Actual sizing available as option.

	Contents
Features ............................................................................	1
Specifications ....................................................................	2
Ordering Information .........................................................	2

63-2598-09

D2 (FORMER D642), D3 (FORMER D640)

SPECIFICATIONS

Size Limitations:

Pressure:

2 1/2 in. - 5 in. (622 Pa - 1245 Pa) pressure differential.

Velocity:

2000 fpm - 3000 fpm (10.2 m/s - 15.2 m/s).

Size Range:

Minimum Size:

One Blade: 6 in. (15.2 cm) W x 6 in. (15.2 cm) H. Two Blade: 6 in. (15.2 cm) W x 10 in. (25.4 cm) H.

Maximum Size:

Single Section: 48 in. (121.9 cm) W x 72 in. (182.9 cm) H. Multiple section size unlimited.

NOTE: W and H dimensions furnished 1/4 in. (0.6 cm) undersize.

Maximum Temperature:180° F (82° C).

NOTE: Temperatures exceeding 180° F (82° C) require special consideration.

M20586

Fig. 1. 3-V blade.

5-1/8

5-1/8

5-1/4

(130)

(130)

(132)

SINGLE FLANGE		1-1/2 (38) (TYPICAL)	DOUBLE FLANGE
	SINGLE REVERSED
		FLANGE	M23950

Fig. 2. Flange options.

Parallel/Opposed Blade Operation (Fig. 3)

Control dampers are offered with either parallel or opposed blades (silicone or vinyl blade seals are optional). Each style has distinguishing characteristics regarding fan performance control and change in air velocity profile:

—Parallel blade operation is preferred:

—When the damper makes up a significant portion of the total system pressure loss.

—When greater control is required near the top end of the volume operating range or for systems requiring two position (fully open or fully closed) operation.

—Parallel blades should not be used upstream of critical components due to uneven airflow.

—Opposed blade operation is preferred:

—When the damper doesn’t make up a significant portion of the total system pressure loss.

—For applications where it is necessary to maintain even distribution of air downstream from the damper.

—For ducted outlets.

—Opposed blade dampers must open farther to obtain the same airflow resistance as parallel blade dampers.

	1-1/4 (32)	1-1/4 (32)
	MAX.	MAX.
	(TYPICAL)	(TYPICAL)
5 (127)	5 (127)
PARALLEL BLADES	OPPOSED BLADES	M23951

Fig. 3. Parallel and opposed blades.

ORDERING INFORMATION

When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the TRADELINE® Catalog or price sheets for complete ordering number.

If you have additional questions, need further information, or would like to comment on our products or services, please write or phone:

1.Your local Honeywell Automation and Control Products Sales Office (check white pages of your phone directory).

2.Honeywell Customer Care 1885 Douglas Drive North

Minneapolis, Minnesota 55422-4386

In Canada—Honeywell Limited/Honeywell Limitée,

International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France, Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.

63-2598—09

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