TrueZONE EARD Series Dampers
Job Name
Engineer
Mechanical Contractor
Contractor’s P.O. No.
Representative
Notes
Model(s)
EARD6TZ/U Qty.
EARD8TZ/U Qty.
Approval
Service
Tag No.
SUBMITTAL SHEET
Notes
Notes
APPLICATION
The EARD is a round damper with a 24 Vac poweredopen/spring-closed motor. It is used for fresh air intake for
Ventilation or for combustion makeup air.
FEATURES
• Taping flange and non-interfering set screw
• High Temperature outer plastic for hot environments
• Redesigned all Metal Drive Train Gears
• Front facing display with LED indication light for Open and Close
• Adjustable damper open position range stops
• Quiet operation
• Shipped as power open/spring return closed damper
• Blade closes off tightly against gasket for minimal leakage
• Galvanized steel
• Rated to operate up to 1 in. wc
• Simple, easy-to-wire, two-wire installation
• Male (crimped) and female (uncrimped) ends to connect to any rigid or flexible round duct.
SPECIFICATIONS
IMPORTANT
The specifications given in this publication do not include normal manufacturing tolerances. Therefore, this unit may not exactly match the listed specifications. Also, this product is tested and calibrated under closely controlled conditions, and some minor differences in performance can be expected if those conditions are changed.
MOTOR AND DAMPER DATA
Motor Electrical
Rating
Motor Electrical
Connection
Motor Nominal
Angular Rotation
Motor Torque
24 Vac, 60 HZ, 8VA
Push terminals. Solid (not stranded) wire is recommended
90°
Minimum 71 in.-0z (500 millinewton meters) output torque available when motor is energized and device is at the spring return initial start position.
Energized at rated load: 30 seconds
De-energized (spring return): 10 seconds
Nominal Motor timing at 77°F
(25°C) Ambient
Motor Ambient
Temperature
Rating
Leakage
Pressure Drop
40
°
to 140
°
F (5
°
to 60
Less than 1% at 1/2 in. wc.
Maximum at full open: 0.0329 in. wc at
800 ft/min.
1 in. wc.
°
F)
Maximum Static
Pressure
Motor Shaft
Rotation Direction
Motor Mounting
Means
Motor Mounting
Position
Motor Dimensions
CONSTRUCTION
Frame
Sizes
Clockwise, when energized and viewed from base or shaft end.
Direct connection to damper shaft.
Multi-poise
See Fig. 1.
Galvanized steel spiral duct.
6- and 8- inch diameter sizes.
TRUEZONE EARD SERIES DAMPERS
DIMENSIONS
Fig. 1. M847D-VENT/U Dimensions.
Automation and Control Solutions
Honeywell International Inc.
1985 Douglas Drive North
Golden Valley, MN 55422 customer.honeywell.com
® U.S. Registered Trademark
© 2016 Honeywell International Inc.
33-00178—01 M.S. 01-16
Printed in United States
