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10 inch dampers ND Series

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ND series motorized damper 71

Product Description

Heavy Duty Frame Nylon Bushings for Quieter Operation Revolutionary Motor with greater Reliability LED's to Show Damper Operation Low Leakage Simple 3-wire Hook-up Easier Ordering *****MOTOR WILL BE MOUNTED ON SECOND DIMENSION, BE SURE TO ORDER ACCORDINGLY!!!****
The ND series of Ultra-Zone dampers was designed with the installer and homeowner in mind. This damper is easy to install and easy to checkout. The LED display allows the installer to visually check the damper operation. With a sturdier frame, the damper installs in the duct much faster and easier and the nylon bushings insure quieter operation. This is a feature that homeowners will never hear about! Quieter operation and a longer life motor equals NO call backs.The motor for the ND damper is driven by 17 in. lbs. of torque, possesses a manual gear release, 3 wire power open/power closed operation and fail-safe LED"s for quick diagnostic checks. The motor is UL listed and NEMA Class 2 certified. The easy access, quick connecting terminal block eliminates the need for wire nuts and allows for trouble free use.The ND damper has a 97% leak proof rating. Overlapping blades and a strong positive off motor insures accurate control of all zones. The ND dampers combined with the Ultra-Zone zoning system provides the most comfortable and reliable system in the industry.The ND is available in 8" x 6" thru 30" x 30" in even inch increments. The motor will be mounted on the second dimension when ordered. For example, a 16" x 8" damper will have the motor mounted on the 8" dimension, while an 8" x 16" will have the motor mounted on the 16" dimension. This will alleviate the confusion between side mount and bottom mount dampers.For added flexibility, ND dampers can also be provided with a spring return style motor , Model ND-RSD. The ND-RSD does not have LEDs. Please specify the unpowered state of ND-RSD dampers as "normally closed" or "normally open" when ordering. Notice: The MA-ND5 (power open/power close) motor actuator cannot be used to replace an existing MA-RSD (spring return) motor actuator, nor can an MA-RSD replace an MA-ND5. 

OPTIONS ND-L ------------ 3/8" hex shaft ND-MQ------------ manual quadrant-no motor MD-LM24---------- 35 in/lbs 24 volt motor ND-LM24SR-------- TModulating Motor ND-MA15S--------- 15 Second Motor S1A-------------- End Switch ND-LF24---------- 24V Spring Return ND-LF120--------- 120V Spring Return  ( Call toll free 1-855-292-1502 for these special options and prices)


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Product Reviews

  1. Replacement Damper= Impressed 5 Star Review

    Posted by on 9th Apr 2019

    I was so impressed with the quality of the construction, very durable frame. This was a replacement for a EWC product installed in 2004.

    In addition to the impressive product, I would like to say your customer support, dealt with John Brown, was outstanding. Keep up the great work!

  2. Very easy to install, excellent quality. 5 Star Review

    Posted by on 9th Jul 2015

    My 17+ year old motorized dampers needed replacing and I was happy to see these EWC dampers for sale online. The purchase process was straight forward and they were delivered to my home much faster than I anticipated. The installation was extremely easy and the wiring was so simple a novice like me had no problems. My only headache was they were slightly bigger than the ones I replaced and I needed to increase the slot in the ducts by 1 and 3/4 inches. Overall, I am very pleased and the LED display is a bonus.

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