ZD Damper Submittal

ZD Series Damper
SUBMITTAL SHEET
Job Name
Engineer
Mechanical Contractor
Contractor’s P.O. No.
Representative
Notes
Model(s)
Qty.
Notes
Qty.
Notes
Qty.
Notes
Approval
Service
Tag No.
APPLICATION
The ZD is a power close and spring open damper. It has a 24-volt
motor used to control circulating air in HVAC systems and used
when a normally-open damper is required. The ZD is typically used
with the TrueZONE and other electronic zoning systems.
ZD FEATURES
• Adjustable closed position range stops.
• Rated to operate up to 1 in. wc.
• Solid construction using extruded aluminum frame and
blades.
• Parallel blade design for low leakage performance.
• Simple, easy-to-wire, two-wire installation with a third wire
option M4 for LED open light.
• Fail-safe, normally open operation.
• Damper can be installed in any orientation (mounting side
can be on either the bottom or the side of the duct).
• 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 position range stops.
• Quiet operation.
• The ZD is intended for use as a zone damper. It cannot be
configured to be power open for fresh air applications. EARD
round dampers are power open. ARD round dampers are field
convertible to be power open with an M847D-VENT actuator.
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 Electrical Rating: 24 Vac, 60 Hz, 8VA.
Motor Electrical Connection: Push terminals. Solid (not stranded)
wire is recommend.
Motor Nominal Angular Rotation: 90.
Motor Torque: Minimum 71 in.-oz. (500 millinewton meters)
output torque available when motor is energized and device is at
the spring return initial start position.
Nominal Motor Timing at 77ﾰF (25ﾰC) Ambient: Energized at
rated load: 30 seconds. De-energized (spring return): 10 seconds.
Motor Ambient Temperature Rating: 40 to 140F (5 to 60C).
Leakage: Less than 1% at 1/2 in. wc.
Pressure Drop: Maximum at full open: 0.0329 in. wc at 800 ft/min.
Maximum Static Pressure: 1 in. wc for all models.
Motor Shaft Rotation Direction: Clockwise, when energized and
viewed from the base or shaft end.
Motor Mounting Means: Direct connection to damper shaft.
Motor Mounting Position: Multi-poise.
REPLACEMENT PARTS
Motor (actuator assembly) M847D-ZONE
DIMENSIONS IN INCHES (MM)