AERCO AF120-S US Installation Instructions

55

Di

R

f

t

”

shafts

I

nstallation Instruction

s

Q

n

1

I

.

I

.

.

3

.

4

.

N

.

.

uick-Mount Visual Instructions for Mechanical Installatio

Quick-Mount Visual Instructions

. Rotate the damper to its fail-safe position.

f the shaft rotates counterclockwise, mount the “CCW” side of the actuator out
f it rotates clockwise, mount the actuator with the “CW” side out

2. If the universal clamp is not on the correct side of the actuator, move it to the correct side

. Slide the actuator onto the shaft and tighten the nuts on the V-bolt with a 10mm wrench to 6-8 ft-lb of torque

. Slide the anti-rotation strap under the actuator so that it engages the slot at the base of the actuator. Secure the strap to the duct work with #8 self-tapping screws

OTE: Read the “Standard Mounting” instructions, on the next page, for more detailed information

mensions (Inches [mm])

min. 3 1/2"

[90]

min. 3/4"

[20]

IND-AF2 Position Indicator

(optional)

emove
or 3/4”
o 1.05

IND-AF2 Position Indicator

(optional)

M40024 - 05/10 - Subject to change. © Belimo Aircontrols (USA), Inc

800-543-9038 USA 866-805-7089 CANADA 203-791-8396 LATIN AMERICA

56

Installation Instruction

s

M

n

p

f

g

,

f

s

.

P

f

s

.

,

f

s

.

,

f

s

.

p

t

.

T

t

Beli

f

enclosure must be used to shield

,

t

s

T

y

shaf

-

saf

sy

T

T

i

T

d

s

T

c

p

f

f

p

-

off

d

a

.

1

rotated counterclockwise (

), this is a CCW installation. If the shaft rotated

)

clockwise (

), this is a CW installation. In a CCW installation, the actuator side

)

All

l.

2

s

s

c

Short Shaft Installation

section.

3

c

u

p

C

)

S

Limiting, Mechanical Minimum Damper Position

4. Lock th

5

6. Slide

.

desired locatio

f

9

p

f

.

echanical Installatio

Determining Torque Loading and Actuator Sizing

Damper torque loadings, used in selecting the correct size actuator, should be

rovided by the damper manufacturer. If this information is not available, the

ollowing general selection guidelines can be used.

Damper Type Torque Loadin

Opposed blade, without edge seals

or non-tight close-off application

arallel blade, without edge seals,

or non-tight close-off application

Opposed blade, with edge seals

or tight close-off application

Parallel blade, with edge seals

or tight close-off application

The above torque loadings will work for most applications under 2 in. w.g. static

ressure or 1000 FPM face velocity. For applications between this criteria and 3 in.

w.g. or 2500 FPM, the torque loading should be increased by a multiplier of 1.5. If

he application calls for higher criteria up to 4 in. w.g. or 3000 FPM, use a multiplier

of 2.0

3 in-lb/sq. ft

4 in-lb/sq. ft

5 in-lb/sq. ft

7 in-lb/sq. ft

orque Loading Char

70

60

50

40

30

Mechanical Operation

he actuator is mounted directly to a damper shaft up to 1.05” in diameter b
means of its universal clamp. A crank arm and several mounting brackets are
available for applications where the actuator cannot be direct coupled to the damper

t. The AF series actuators provide true spring return operation for reliable fail

e application and positive close-off on air tight dampers. The spring return

stem provides constant torque to the damper with, and without, power applied to

the actuator. The AF…-S versions are provided with 2 built-in auxiliary switches.

hese SPDT switches are provided for safety interfacing or signaling, for example,
for fan start-up. The switching function at the fail-safe position is fixed at +5°, the
other switch function is adjustable between +25 to +85°.

Automatic Airtight Dampers/Manual Override

he AF series provides 95° of rotation and is provided with a graduated position

ndicator showing 0° to 95°.

he AF has a unique manual positioning mechanism which allows the setting of any

amper position within its 95° of rotation. A pre-tensioned spring automatically
tightens damper when power is applied to the actuator, compensating for damper

eal deterioration.

he actuator is shipped at +5° (5° from full fail-safe) to provide automatic

ompression against damper gaskets for tight shut-off. When power is applied, the
manual mechanism is released and the actuator drives toward the full fail-safe

osition.

Standard Mounting

NOTE: The AF…series actuator is shipped with the manual override adjusted

or a +5° position at the universal clamp (not at full fail-safe, 0°). This allows
or automatic compression of damper blade seals when the actuator is in use,

roviding tight shut-off. This assumes that the damper is to have tight shut

at the fail-safe position. If tight close-off is desired at the opposite
irection from fail-safe, the manual override should be released so the
ctuator can go to the full fail-safe position. See the manual override

instructions

. Manually move the damper to the fail-safe position (usually closed). If the shaft

Damper Area (sq. ft.)

20

10

0

2

46810

3

579

Torque Loading (in-lb/

sq. ft.)

General Information

mo actuators should be mounted indoors in a dry, relatively clean environment

ree from corrosive fumes. If the actuator is to be mounted outdoors, a protective

M40024 - 05/10 - Subject to change. © Belimo Aircontrols (USA), Inc.

For new construction work
installing contractor to allow space for mounting and service of the Belimo actuator on

he shaft. The damper shaft must extend at least 3 1/2” from the duct. If the shaft
extends less than 3-1/2” or if an obstruction blocks access, the shaft can be extended
with the AV 10-18 shaft extension accessory or the actuator may be mounted in its short

haft configuration.

the actuator.

order dampers with extended shafts. Instruct the

marked “CCW” faces out, while in a CW installation, the side marked “CW” faces

other steps are identica

out.

. The actuator is usually shipped with the universal clamp mounted to the “CCW”

ide of the actuator. To test for adequate shaft length, slide the actuator over the
haft with the side marked “CCW” (or the “CW” side if this is the side with the
lamp). If the shaft extends at least 1/8” through the clamp, mount the actuator

as follows. If not, go to the

. If the clamp is not on the correct side as determined in step #1, re-mount the

lamp as follows. If it is on the correct side, proceed to step #5. Look at the
niversal clamp. If you are mounting the actuator with the “CCW” side out,
osition the clamp so that the pointer section of the tab is pointing to 0° (see

Figure

and the spline pattern of the clamp mates with spline of the actuator.

lip the clamp over the spline. (Use the same procedure if the “CW” side is out.) If

your application requires a mechanical minimum position, read theRotation

e clamp to the actuator using the retaining clip.

. Verify that the damper is still in its full fail-safe position.

the actuator over the shaft

7. Position the actuator in the

8. Tighten the two nuts on the clamp using a 10mm wrench or socket using 6-8
t-lb of torque.

. Slip the stud of the anti rotation strap into the slot at the base of the actuator.

The stud should be positioned approximately 1/16 of an inch from the closed end
of the slot. Bend the stra
duct with #8 sel

as needed to reach the duct. Attach the strap to the

tapping screws

section.

n.

800-543-9038 USA 866-805-7089 CANADA 203-791-8396 LATIN AMERICA

57

30

20

10

0

CCW

30

20

10

0

-5

40

30

20

10

0

-5

40

30

20

10

0

-5

-5

-5

-

FIGU

p

s

I

nstallation Instruction

s

M

ion

I

:

1

T

t

.

.

3

4

.

6. Positi

.

f

8

T

9

Fig

T

d

m

g

details.

T

M

ft

A

S

A

S

A

S

4

A

f

o

sed

If

m

NO

ppli

S

e

.

echanical Installat

Short Shaft Installation

f the shaft extends at least 3/4” from the duct, follow these steps

. Determine the best orientation for the universal clamp on the back of the actuator.

he best location would be where you have the easiest access to the V bolt nuts on

he clamp

2. Engage the clamp to the actuator as close as possible to the determined location
. Lock the clamp in place using the remaining retainer clip.
. Verify that the damper is still in its full fail-safe position

5. Slide the actuator over the shaft.

on the actuator in the desired location

7. Tighten the two nuts on the clamp using a 10mm wrench or socket using 6-8

t-lb of torque.

. Slip the stud of the anti-rotation strap into the slot at the base of the actuator.

he stud should be positioned approximately 1/16 of an inch from the closed end
of the slot. Bend the strap as needed to reach the duct. Attach the strap to the
duct with #8 self tapping screws.

. If damper position indication is required, use the optional IND-AF2 pointer. See

ure A

Jackshaft Installation

he AF… series actuator is designed for use with jackshafts up to 1.05” in
iameter. In most applications, the AF actuator may be mounted in the same

anner as a standard damper shaft application. If more torque is required than one
AF actuator can provide, a second AF actuator may be mounted to the jackshaft
usin

the ZG-102 multiple actuator mounting bracket. See wiring guide for wiring

AF ACTUATORS WHICH MAY BE USED ON ONE SHAF

odel Maximum Quantity Per Sha

F24(-S) U

F120(-S) U

F230(-S) U

F24-SR US

MOUNTING: If the actuators are
mounted on the opposed ends of the
shaft, the actuator direction must be
selected care

f rotation is rever

ully. Usually, the direction

.

Correct clamp mounting
position if actuator is at
full fail-safe.

CW

Correct pointer mounting
position if actuator is at
full fail-safe.

CCW

40

0

3

20

10

0

Correct pointer mounting
position when actuator is
at 5° preload.

CW

30

2

0

10

0

CWCCW

0

40

30

20

10

0

Correct pointer mounting
position if actuator is at
full fail-safe.

4

30

20

10

0

Multiple Actuator Mounting

more torque is required than one AF actuator can provide, a second AF actuator

ay be mounted to the shaft using the ZG-102 multiple mounting bracket.

TE: The manual positioning mechanism cannot be used in multiple actuator

a

cations.

pecial Wiring and Additional Information: See wiring guid

800-543-9038 USA 866-805-7089 CANADA 203-791-8396 LATIN AMERICA

CWCCW

RE A – Universal Clamp and IND-AF2 Pointer (optional)

ositions indicating fail-safe and pre-load setting

M40024 - 05/10 - Subject to change. © Belimo Aircontrols (USA), Inc