iO HVAC Controls RD-XX Series Operating instructions

RD-XX SERIES RETRO DAMPER

INSTALLATION AND WIRING INSTRUCTIONS

RD-XX Series Retro Dampers can be used with most

zone control panels which have the ability to directly

power a 3-wire actuator. Each Retro Damper is rated

at 24Vac, 2VA. The zone control system transformer

must be sized to handle the total VA of all dampers.

In some applications, additional dampers may require

a relay and separate transformer.

INSTALLATION AND WIRING:

1. Each RD-XX Retro Damper is supplied with a self-adhesive template that is applied to the round

section of duct where the damper is to be installed. The template should run parallel to the duct

work.

2. Drill two 1” holes and four 1/8” mounting holes 3. Cut out the area between the holes.

as noted on the template.

Zone Control Made Simple™

Drill 1/8” mounting hole

Drill 1” hole Drill 1” hole

Use the template to drill two 1” holes.

Cut out the area between the two holes.

Drill four 1/8” holes in corners to mount the damper to existing duct work.

Zone Control Made Simple™

Drill 1/8” mounting hole

Use the template to drill two 1” holes.

Cut out the area between the two holes.

Drill four 1/8” holes in corners to mount the damper to existing duct work.

4. The damper blade must be parallel to the 6. Attach the three wires to the correct

damper frame. Press in on the gear release terminals.

tab to manually position the blade. 1 = Common

5. Slide the damper into the duct and secure it 2 = Powered Close

with the four supplied mounting screws. 3 = Powered Open

GEAR RELEASE TAB WIRING TERMINALS

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iO-06-1226-071917

HVAC Controls

Indianapolis, IN 46237

www.iohvaccontrols.com

For Technical Support Call Toll Free: 866-225-5032