DuroZone MB Series Multi-Blade Damper, MB Series Installation Instructions Manual

®

(M1) Common

(M2) Hot

(M4) Open

(M6) Close

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2

4

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DuroZone

INSTALLATION INSTRUCTIONS

MMB SERIES MULTI-BLADE DAMPER

SPRING RETURN MID-TORQUE MOTOR

INSTALLATION IN DUCT

1. Cut 4 1/8” wide slot into side of sheet metal duct.

2. Slide damper into duct work.

3. Secure by screwing the damper into the ductwork.

(Screws Provided)

MOTOR LEAD IDENTIFICATION

Yellow and Orange leads: 24 volt input AC Only

- IMPORTANT -

This motor is designed for use with 24 Volt VAC power source.

- WIRE ACCORDING TO LOCAL CODE -

TYPICAL WIRING

To Control Panel Part# 35226 (SMZ2SW)
35227 (SMZ3SW) /35229 (SMZAC)
35235(JTZHP) /35236 (ED3) /35237 (ED4)

Wiring diagram for a spring return damper
that without power is normally open
(spring open).

Control Panel

Terminal

Strip

NOTE: On SMZ Panels it is recommended
to leave the damper switches on the
control panel in the open position.

Spring Open Damper Motor Operation

Energizing the Yellow and Orange leads with 24 volts will close the damper.

Removing power from the Yellow and Orange leads will cause the damper

to return to a fully open position.

24 volts

Duro Dyne East • Bay Shore, NY 11706 • Phone: [phone] • Fax: [phone]
Duro Dyne Midwest • Fairfield, OH 45011 • Phone: [phone] • Fax: [phone]
Duro Dyne West • Santa Fe Springs, CA 90670 • Phone: [phone] • Fax: [phone]
Duro Dyne Canada • Lachine • Quebec • Canada • Phone: [phone] • Fax: [phone]

©2007 Duro Dyne Corporation
Printed in USA 06/2007
BI035403

Motor

Wire

Connectors

Switch or Relay

Contacts

Yellow

Orange

ALL DuroZone DAMPERS FEATURE:

• 3 year limited warranty • Controlled bypass •
Maintenance free operation • 100% factory test­ing • Screwless terminals • Custom dampers
and special controls are available on request.

®

DuroZone

GASKET INSTALLATION INSTRUCTIONS

MMB SERIES MULTI-BLADE DAMPER

SPRING RETURN MID-TORQUE MOTOR

Direction of Air Flow

Ribs

Motor may vary

(Hi-torq or Mid-Torq)

Note the direction of the air-flow when
securing the gasket to the frame.

Gasket

Note the direction of the air-flow when
securing the gasket to the frame.

Gasket must be placed at the leading
face of the frame between the two end
ribs as shown.

Direction of Air Flow

Gasket

Ribs

Gasket must be placed at the leading
face of the frame between the two end
ribs as shown.

Motor may vary

(Hi-torq or Mid-Torq)

Duro Dyne East • Bay Shore, NY 11706 • Phone: [phone] • Fax: [phone]
Duro Dyne Midwest • Fairfield, OH 45011 • Phone: [phone] • Fax: [phone]
Duro Dyne West • Santa Fe Springs, CA 90670 • Phone: [phone] • Fax: [phone]
Duro Dyne Canada • Lachine • Quebec • Canada • Phone: [phone] • Fax: [phone]

©2007 Duro Dyne Corporation
Printed in USA 06/2007
BI035403

ALL DuroZone DAMPERS FEATURE:

• 3 year limited warranty • Controlled bypass •
Maintenance free operation • 100% factory test­ing • Screwless terminals • Custom dampers
and special controls are available on request.