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CRDS ROUND DAMPER SPRING RETURN
Single Blade Round Spring Return Dampers
FEATURES
• Single blade dampers with 24 volt spring return motor.
• Mounts in any position.
• Rated for any duct system 1
”
W.C. or less.
• Field convertible from Power Close to Power Open.
• Minimum position screw, direct drive linkage.
SPECIFICATIONS
Construction . . . . . . . . 22 gauge galvanized steel
Dimensions . . . . . . . . . 5
”
, 6
”
, 8
”
, 9
”
, 10
”
, 12
”
, 14
”
, 16
”
, 18
”
20
”
diameters
Connections . . . . . . . . . . . . . . . . . 4
”
wire leads
Operating Temperature Rating . 0°F to 120°F
Humidity . . . . . . . . . . . . . . . . . . . . 5 to 95% non-condensing
Static Pressure . . . . . . . Maximum 0.5
”
W.C.
Damper Timing . . . . . . . Nominal 30 sec. powered, 8 sec spring return
SINGLE BLADE
ROUND DAMPERS
ZONING
Model
Number
Size
CRDS05
5
”
CRDS06
6
”
CRDS08
8
”
CRDS09
9
”
CRDS10
10
”
CRDS12
12
”
CRDS14
14
”
CRDS16
16
”
CRDS18
18
”
CRDS20
20
”
TECHNICAL HELP
Installation Wiring and Dimensions . . . see page 219
Model
Number
Description
CMSR
Replacement Spring Return Damper Motor for CZD and
CRDS Models
CRDS12
?
PAGE
219
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INDOOR AIR QUALITY /
ZONING SYSTEMS