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® U.S. Registered Trademark EN0B-0320CH33 R0803A Copyright © 2008 Honeywell Inc. • All rights reserved CN20, CN34 SERIES NON-SPRING RETURN DIRECT-COUPLED DAMPER ACTUATORS FOR FLOATING / 2-POSITION CONTROL PRODUCT DATA GENERAL These direct-coupled damper actuators provide two-position and floating control for:

  • air dampers,
  • VAV units,
  • air handlers,
  • ventilation flaps,
  • louvers, and
  • reliable control for air damper applications with up to (34 Nm / 300 lb-in) (seal-less dampers; air friction- dependent).

FEATURES

  • Self-centering shaft adapter
  • Access cover to facilitate connectivity
  • Service/off for safe & easy servicing
  • Rotation direction selectable by switch
  • Declutch for manual adjustment
  • Mechanical end limits
  • Field-installable auxiliary switches
  • Mountable in any orientation (no IP54 if upside down)
  • Mechanical position indicator
  • CE and UL certified (230V models with CE only) SPECIFICATIONS Supply voltage CN6120/CN6134 24 Vac/dc ±15%, 50/60 Hz CN4620/CN4634 230 Vac ±15%, 50/60 Hz Nominal voltage CN6120/CN6134 24 Vac/dc, 50/60 Hz CN4620/CN4634 230 Vac, 50/60 Hz All values stated hereinafter apply to operation under nominal voltage conditions. Power consumption CN6120 6 VA / 3 W CN4620 8 VA / 3 W CN6134 6 VA / 3 W CN4634 10 VA / 4 W Ambient limits Relative humidity 5...95%, non-condensing Safety Protection standard IP54 as per EN 60529 Protection class II as per EN 60730-1 Overvoltage category III Lifetime Full strokes 60000 Repositions 1.5 million Mounting 45° steps Shaft length min. 22 mm (7/8") End switches (when included) Rating 5 A (resistive) / 3 A (inductive) Triggering points 5 ° / 85° Torque rating CN6120 / CN4620 20 Nm (177 lb-in) CN6134 / CN4634 34 Nm (300 lb-in) Runtime 95 sec (60 Hz) / 110 sec (50 Hz or DC supply) Rotation stroke 95 ° ± 3° Dimensions see "Dimensions" on page 6 Weight (without cables) 1.35 kg (3 lbs.) Noise rating 40 dBA max. at 1 m Certification CE CN6120 / CN6134 CN4620 / CN4634 UL CN6120 / CN6134

CN20, CN34 SERIES DAMPER ACTUATOR FOR FLOATING AND 2-POS CONTROL EN0B-0320CH33 R0803A 2 MODELS Model # Description CN6120A1002 20Nm,24Vac/Vdc, Floating/2-position control, Non-Spring Return, No feedback and without aux. Switch CN4620A1001 20Nm,230V,Floating/2-position control, Non-Spring Return, No feedback and without aux. Switch CN6134A1003 34Nm,24Vac/Vdc, Floating/2-position control, Non-Spring Return, No feedback and without aux. Switch CN4634A1001 34Nm,230Vac, Floating control/2-position, Non-Spring Return, No feedback and without aux. Switch Product Identification System C – Direct Coupled Actuator N – Fail Safe Function (Non-Spring Return) 61 – 24V Floating/2-position Control 72 – 24V Modulating and Floating/2-position Control 46 – 230V Floating/2-position Control 20 – 20 Nm (177 lb-in) 34 – 34 Nm (300 lb-in) A – Standard Model 1 – No Feedback 2 – Voltage Feedback Signal 0 – No Internal Auxiliary Switches 2 – Two Internal Auxiliary Switches XX – System Controlled Numbers C N 61 20 A 1 0 XX Fig. 1. Product Identification System OPERATION / FUNCTIONS Fig. 2. Setting units and control elements Legend for Fig. 2:

1 Self-centering shaft adapter

2 Retainer clip

4 Mechanical end limits

5 Declutch button

6 Anti-rotation bracket

7 Function selection switch

8 Access cover

The delivery package includes the actuator itself, parts 1 through 8 (see Fig.2), the anti-rotation bracket screws, and installation instruction. RUN MODES The function selection switch (see Fig. 3) can be used to place the actuator into any one of three different modes:

  • Dir, floating/2-positi on control, cw run.
  • Service/Off, actuator stop running.
  • Rev, floating/2-positi on control, ccw run. 7 8

3 EN0B-0320CH33 R0803A

If power is removed, the actuator retains its position. or for 2-position mode: see A2). Table 1. Behavior of CN6120/CN6134 open 24Vac/dc CCW stops CW Float. Table 2. Behavior of CN4620/CN4634 open 230Vac CCW stops CW Float. energy significantly through whole service life. provided in the actuator plate (see Fig. 4). "Service/Off" position before manual adjustment. manually rotated to any position. The mechanical end limits must be securely fastened in place. angle scales when the screws are tightened. NOTE: Applicable to models with internal switches only.

CN20, CN34 SERIES DAMPER ACTUATOR FOR FLOATING AND 2-POS CONTROL EN0B-0320CH33 R0803A 4 The internal end switches are set to switch from "common" to "normally open" at angles of 5° and 85°, respectively, from the totally counterclockwise position. 5 10 15 92.5 0 90-2 . 5 858075 85 807 5- 2 . 590 092.5 51015 5 10 150 90858075 CCW internal end switch CW internal end switch actuator scale: clockwise end switch scale actuator scale: counterclockwise Fig. 6. Internal end switch triggering points INSTALLATION These actuators are designed for single-point mounting. IMPORTANT In order to prevent equipment damage, you must remove power or set the rotation direction switch to the "Service/Off" position before manual operation. Mounting Instructions All information and steps are included in the installation instructions supplied with the actuator. Mounting Position The actuators can be mounted in any position (no IP54 if mounted upside down; see Fig. 7). Choose a mounting posi- tion permitting easy access to the actuator's cables and controls. IP54 IP54IP54 IP54 Fig. 7. Mounting for IP54 Mounting Bracket and Screws If the actuator is to be mounted directly on a damper shaft, use the mounting bracket and screws included in the delivery package. Self-Centering Shaft Adapter The self-centering shaft adapter can be used for shafts shapes (square or round). In the case of short shafts, the shaft adapter may be reversed and mounted on the duct side. Stroke Limitation with Mechanical End Limits The mechanical end limits enable the stroke to be limited from 0...90° in increments of 5°. Wiring Connecting to the Power Supply In order to comply with protection class II, the power source of

24 V actuators must be reliably separated from the network

power supply circuits as per DIN VDE 0106, part 101. Access Cover To facilitate wiring the actuator to the controller, the access cover can be detached from the actuator. IMPORTANT Remove power before detaching the access cover. Once the access cover has been removed, please take care to avoid damaging any of the parts now accessible. Fig. 8. Access cover (models with internal switches) Depending upon the model, the access cover may have one or two terminal strips, including a layout with a description for each of the terminals. Fig. 9. Actuator with access cover removed (models with internal switches)

CN20, CN34 SERIES DAMPER ACTUATOR FOR FLOATING AND 2-POS CONTROL

5 EN0B-0320CH33 R0803A

A1 CN6120,CN4620 CN6134,CN4634 FLOATING A2 CN6120,CN4620 CN6134,CN4634 2-POS A3 END SWITCHS (models with switch only) NOTE: Internal end switches S1 and S4 must be connected to the same power source. Below 2 tables summarize the information presented in the preceding wiring diagrams. Wiring Models Terminal Floating 2-position 2 common ┴/─ common ┴/─ 3 24V ~/+ (clockwise) 24V ~/+ CN6120,CN6134 supply and signal lines (must be equipped with spark suppressors) 4 24V ~/+ (counterclockwise) 24V ~/+ control signal 2 common ┴/─ common ┴/─ 3 230Vac (clockwise) 230Vac CN4620,CN4634 supply and signal lines (must be equipped with spark suppressors) 4 230Vac (counterclockwise) 230Vac control signal Connecting cable Terminal Description S1 common S2 normally closed CCW (left) 5° S3 normally open S4 common S5 normally closed end switches (models with internal switches only) CW (right) 85° S6 normally open OPTIONAL ACCESSORIES The following optional accessories can be ordered separately. Auxiliary Switch Kit Order no.: SW2 S3A B S4 S6 C D45 A B C D The auxiliary switches are field-installable parts providing two SPDT freely-adjustable switches. SPARE PARTS Spare Parts Kit Order no.: A7209.2071 The spare parts kit contains the following items:

  • Anti-rotation bracket and screws
  • Access cover screw
  • Plastic protective cap for protection standard IP54
  • Mechanical end limit screw and retainer Anti-Rotation Bracket Kit Order no.: A7209.2073 The anti-rotation bracket kit can be ordered separately. Contains:
  • 10 anti-rotation brackets
  • 20 screws

CN20, CN34 SERIES DAMPER ACTUATOR FOR FLOATING AND 2-POS CONTROL Manufactured for and on behalf of the Environmental and Combustion Controls Division of Honeywell Technologies Sàrl, Ecublens, Route du Bois 37, Switzerland by its Authorized Representative: Automation and Control Solutions Honeywell International Inc. Honeywell (Tianjin) Limited

1985 Douglas Drive North 66, BaiHe Road, TEDA

Golden Valley, MN 55422 Tianjin, 300457,P.R.C. EN0B-0320CH33 R0803A DIMENSIONS