DuroZone MB Series Multi-Blade Damper User manual

INSTALLATION INSTRUCTIONS
DuroZone
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)
TYPICAL WIRING
®
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.
Switch or Relay
Contacts
24 volts
Orange
Yellow
Motor
Wire
Connectors
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 -
Wiring diagram for a spring return damper
that without power is normally open
(spring open).
To Control Panel Part# 35226 (SMZ2SW)
35227 (SMZ3SW) /35229 (SMZAC)
35235(JTZHP) /35236 (ED3) /35237 (ED4)
Control Panel
Terminal
Strip
NOTE: On SMZ Panels it is recommended
to leave the damper switches on the
control panel in the open position.
(M1) Common
(M2) Hot
(M4) Open
(M6) Close
1
2
4
6
ALL DuroZone DAMPERS FEATURE:
• 3 year limited warranty • Controlled bypass •
Maintenance free operation • 100% factory test-
ing • Screwless terminals • Custom dampers
and special controls are available on request.
©2007 Duro Dyne Corporation
Printed in USA 06/2007
BI035403
Duro Dyne East • Bay Shore, NY 11706 • Phone: [phone] • Fax: [phone]
Duro Dyne Midwest • Fairfield, OH 45011 • Phone: [phone] • Fax: [phone]
DuroDyne West •Santa Fe Springs,CA 90670•Phone: [phone] • Fax: [phone]
DuroDyneCanada•Lachine•Quebec•Canada•Phone:[phone]•Fax:[phone]

GASKET INSTALLATION INSTRUCTIONS
DuroZone
MMB SERIES MULTI-BLADE DAMPER
SPRING RETURN MID-TORQUE MOTOR
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.
®
Ribs
Ribs
Gasket
Gasket
Motor may vary
(Hi-torq or Mid-Torq)
Motor may vary
(Hi-torq or Mid-Torq)
Direction of Air Flow
Direction of Air Flow
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.
ALL DuroZone DAMPERS FEATURE:
• 3 year limited warranty • Controlled bypass •
Maintenance free operation • 100% factory test-
ing • Screwless terminals • Custom dampers
and special controls are available on request.
©2007 Duro Dyne Corporation
Printed in USA 06/2007
BI035403
Duro Dyne East • Bay Shore, NY 11706 • Phone: [phone] • Fax: [phone]
Duro Dyne Midwest • Fairfield, OH 45011 • Phone: [phone] • Fax: [phone]
DuroDyne West •Santa Fe Springs,CA 90670•Phone: [phone] • Fax: [phone]
DuroDyneCanada•Lachine•Quebec•Canada•Phone:[phone]•Fax:[phone]