Greenheck MBD-10M User Manual

MBD-10M

Manual Quadrant

Duct Insulation

Ductwork

Bracket

anual

uadran

Duct Insulation

Single Blade Manual Balancing Damper

Application and Design

Model MBD-10M is a manual balancing damper designed to regulate flow of air in a HVAC system. They are not intended to be used in applications as a positive shut off or for automatic control.

∨2 in.

Ratings

Pressure: 1.0 in. wg (249 Pa) - pressure

differential

Velocity: 2000 fpm (10.2 m/s)

Temperature: 180°F (82ºC)

Construction Standard

Frame Material Galvanized Steel

Frame Thickness 18 ga. (1.3mm)

Blade Material Galvanized Steel

Axle Material 1/2 in. (13mm)Plated Steel

Bearings Synthetic (acetal) ﬂanged sleeve type

Operator

Operating Shaft

3/8 in. (10mm) sq. locking manual

quadrant

3/8 in. (10mm) sq., 2 1/2 in. (64mm)

long extension

Size Limitation

W x H Minimum Maximum

8 x 4

in. (mm)

(203 x 102) ;

10 x 4

(254 x 102) with

36 x 12

(914 x 305)

standoff bracket

Options

• 1

•2in.(51mm)standoffbracket

(at additional cost)

in. (38mm) standoff bracket (with extended pin)

/2 to accommodate for the thickness of external duct insulation.

Features

• Flangedsleevebearingstominimizeleakage

through axle penetrations in jambs.

• Flangedsleevebearingsallowforvertical

blade mounting.

Installation instructions available at www.greenheck.com

Standard

Optional

Optional 1 1/2 in. Standoff Kit (Shipped Loose)

*W&H dimension furnished approximately 1/4 in. (6mm) undersize.

Standard Kit (Shipped Loose)

Specifications

Manual balancing dampers meeting the following specifications shall be furnished and installed where shown on plans and/or as described in schedules.

Dampers shall consist of: a 18 ga. (1.3mm) galvanized steel frame with 3 ga. (1mm) galvanized steel; 3/8 in. (10mm) sq. plated steel axles; synthetic (acetal) flanged sleeve bearings to minimize axle leakage and allow for vertical blade mounting. Damper manufacturer's printed application and performance data including pressure, velocity and temperature limitations shall be submitted for approval showing damper suitable for pressures to 1.0 in. wg (249 Pa), velocities to 2000 fpm (10.2 m/s) and temperatures to 180°F (82ºC). Testing and ratings to be in accordance with AMCA Standard 500-D.

Basis of design is Greenheck model MBD-10M.

NOTE: Temperatures in excess of 180°F (82ºC) require special consideration.

/2 in. (89mm) depth; blades fabricated from 20

MBD-10M rev. 5 January 2011