ML4125, ML4135, ML8125, ML8135
Fast-Acting, Two-Position Actuators
FOR HEATING, VENTILATION AND
AIR-CONDITIONING APPLICATIONS
PRODUCT DATA
FEATURES
•
•
•
•
Integral spring return.
-40 to 130°F (-40 to 54°C) operating temperature range.
No audible noise during holding.
Electronic circuitry provides efficient operation while
eliminating the need for limit switches.
•
•
•
•
Ninety-five degree angle of rotation.
Die-cast aluminum housing.
Housing design allows flush mounting to damper.
Integral junction box with three conduit openings
eliminates need for separate wiring box.
•
Direct mounting to 3/8 or 1/2 in. round or square shaft.
ML4125, ML8125
•
•
•
100 lb-in. (11.3 N•m) minimum driving torque.
25 to 40 second drive timing (load dependant).
Models available for 24, 120, and 230 Vac.
ML4135, ML8135
•
•
•
40 lb-in. (4.5 N•m) minimum driving torque.
20 to 25 second drive timing (load dependant).
Models available for 24 and 120 Vac.
APPLICATION
The ML4125, ML4135, ML8125 and ML8135 Fast-Acting,
Two-Position Actuators are spring return direct coupled
actuators (DCA) with an integral junction box for on/off
damper control. The actuator accepts an on/off signal from
a single-pole, single-throw (spst) controller. Models are
available with clockwise (cw) or counterclockwise (ccw)
spring return and are designed for heating, ventilation, and
air-conditioning (HVAC) applications.
APPLICABLE LITERATURE
— Motor/Actuator Selection Guide
for Damper Applications
— Engineering Manual of Automatic Control
(also called The Gray Manual)
— Direct Coupled Actuator
63-8419
77-1100
IMPORTANT
This actuator is not to be used in fire/smoke
applications requiring UL555/555S approval.
Quick Selection Guide
63-8553
63-8437
— Damper Torque Calculator
Contents
® U.S. Registered Trademark
Copyright © 2000 Honeywell • All Rights Reserved
N314
63- 2567- 3
ML4125, ML4135, ML8125, ML8135 FAST-ACTING, TWO-POSITION ACTUATORS
Mounting:
Table 3. Approvals.
3/8 in. (10 mm) to 1/2 in. (13 mm) square or round damper
shafts. Actuator can be mounted with shaft in any position.
Secure hub to shaft with:
ML4125
A,B C,D ML4135 ML8125 ML8135
ML8125, ML4125A,B: Four 1/4-28 UNF set screws. Use
1/8 in. Allen wrench to tighten set screws.
ML8135, ML4135: Two 1/4-28 UNF set screws. Use 1/8 in.
Allen wrench to tighten set screws.
UL/cUL
X
X
X
X
X
X
X
X
X
X
UL873
Plenum Rating,
File No. E4436
ML4125C,D: Four 3 mm set screws. Use 3 mm Allen wrench
to tighten set screws.
CE
X
X
X
X
X
C-TICK
IMPORTANT
Honeywell does not recommend using linkages with
these actuators because side-loading of the output
hub reduces actuator life.
2 (51)
1 (25)
Minimum Damper Shaft Length:
1-3/4 in. (45 mm).
5/8
(17)
1
Timing:
Drive Open:
6 3/8
(161)
ML4125, ML8125: 25 to 40 seconds (load dependant).
ML4135, ML8135: 20 to 25 seconds (load dependant).
Spring Close:
ML4125, ML8125: 20 to 25 seconds.
ML4135, ML8135: 15 seconds.
7 1/2
(192)
Design Life (at Rated Voltage):
ML4125, ML8125: 80,000 full-stroke cycles.
ML4135, ML8135: 60,000 full-stroke cycles.
Environmental Protection Ratings:
Table 2. Environmental Ratings.
All Devices ML4125C,D, ML8125, ML8135
IP54
2 (51)
3 5/16 (84)
4 (102)
1/16 (2)
NEMA1
7/8 (22)
Approvals:
1
ML4135/ML8135 HAVE SHORTER
HUB WITH TWO SET SCREWS.
ML4125/ML8125 HAVE LONGER
HUB WITH FOUR SET SCREWS.
Accessories:
201391 Shaft Adapter for 3/8 in. (10 mm) shafts.
205649 Mounting Bracket (included with the actuator).
32003532-001 Adjustable Switch Package, two 10A
externally-mounted fully-adjustable switches.
5 1/8 (129)
M17538
Fig. 1. ML4125/4135, ML8125/8135
dimensiona drawing in in. (mm).
3
63-2567—3
ML4125, ML4135, ML8125, ML8135 FAST-ACTING, TWO-POSITION ACTUATORS
INSTALLATION
When Installing this Product...
1.
Read these instructions carefully. Failure to follow them
could damage the product or cause a hazardous
condition.
2.
Check the ratings given in the instructions and on the
product to make sure the product is suitable for your
application.
3.
4.
Installer must be a trained, experienced service
technician.
After installation is complete, check out product
operation as provided in these instructions.
1
IMPORTANT
All wiring must agree with applicable codes,
ordinances and regulations.
WARNING
Electrical Power Hazard.
Line voltage can cause death or serious injury
and short equipment circuitry.
Disconnect power supply before installation.
1
ENSURE THAT MOUNTING ASSEMBLY PREVENTS ACTUATOR
ROTATION AND ALLOWS ACTUATOR TO FLOAT ALONG INDICATED
AXIS. WHEN TOO TIGHT, THE RESULTING BINDING CAN DAMAGE
CAUTION
Electrical Shock or Equipment Damage Hazard.
Low voltage can shock individuals or short
equipment circuitry.
THE ACTUATOR OR REDUCE TORQUE OUTPUT.
M17519
Fig. 2. Mounting actuator to damper housing.
Disconnect power supply before installation.
NOTE: The actuator mounts flush with the damper box.
Location and Mounting
Preparation
Before mounting the actuator onto the damper shaft, determine
the damper shaft size (3/8 in. to 1/2 in. [10 mm to 13 mm]).
CAUTION
Equipment Damage Hazard.
Tightly securing actuator to damper housing can
damage actuator.
Mount actuator to allow it to float along its vertical axis.
If damper shaft is 3/8 in. (10 mm) round or square, use part
number 201391 Shaft Adapter. Place adapter opposite
set screws (see Fig. 3).
The actuators are designed to open a damper by driving the
NOTE: The damper shaft adapter centers a 3/8 in. (10 mm)
damper shaft in the hub. Failure to use adapter can
cause mounting screws to loosen. A 1/2 in. (13 mm)
damper shaft does not require an adapter.
damper shaft in either clockwise
or counterclockwise
direction. The actuator housing has two slots on the
bottom that, with a 205649 Mounting Bracket, secure it flush
to a damper box (see Fig. 2). When mounted correctly, these
float
slots allow the actuator to
damper shaft.
without rotating relative to the
SHAFT ADAPTER
NOTE: ML4125, ML4135, ML8125 and ML8135 Actuators
are shipped in the fully closed position.
M2064
Fig. 3. Using damper shaft adapter for
3/8 in. (10 mm) damper shafts.
63-2567—3
4
ML4125, ML4135, ML8125, ML8135 FAST-ACTING, TWO-POSITION ACTUATORS
IMPORTANT
Installation
1. All wiring must comply with local electrical codes,
ordinances and regulations.
2. Voltage and frequency of transformer used with
ML8125 or ML8135 must correspond with the
characteristics of power supply and actuator.
3. Use wires rated for at least 75°C (167°F).
CAUTION
Improper set screw tightening causes device
Device Malfunction Hazard.
malfunction.
Tighten set screws with proper torque to prevent
damper shaft slippage.
CAUTION
Using actuator as shaft bearing causes device
(
(
)
)
L1
L2
Actuator Damage Hazard.
RED
R
W
24 VAC
BLACK
damage.
Use actuator only to supply rotational torque. Avoid
any side loads to actuator output coupling bearings.
M17585
To install actuator, proceed as follows:
1.
Place actuator over damper shaft; and hold mounting
bracket in place. See Fig. 2.
Fig. 4. Typical 24 Vac wiring.
2.
3.
4.
Mark screw holes on damper housing.
Remove actuator and mounting bracket.
Drill or center-punch holes for mounting screws (or use
no.10 self-tapping sheet metal screws).
(
(
)
)
L1
5.
6.
Turn damper blades to desired normal (closed) position.
Place actuator and mounting bracket back into position
and secure bracket to damper box with sheet metal
screws.
BLACK
R
W
120
VAC
WHITE
L2
7.
Tighten set screws securely into damper shaft using
minimum 30 lb-in., maximum 60 lb-in. torque. Use
1/8 in. or 3 mm Allen wrench (see Specifications for
details) to tighten set screws.
M17589
Fig. 5. Typical 120 Vac wiring.
Wiring
WARNING
Line voltage can cause death or serious injury
(
(
)
)
L1
BROWN
Electrical Power Hazard.
R
W
230
VAC
BLUE
and short equipment circuitry.
L2
Disconnect power supply before installation.
M17588
CAUTION
Fig. 6. Typical 230 Vac wiring.
Table 4. Color Translations.
Electrical Shock or Equipment Damage Hazard.
Low voltage can shock individuals or short
equipment circuitry.
Disconnect power supply before installation.
G
F
BRUN
BLEU
I
E
BROWN
BLUE
BRAUN
BLAU
BRUNO
CAFE
AZZURRO AZUL
BLACK
WHITE
RED
SCHWARZ NOIR
NERO
NEGRO
WEISS
ROT
BLANC
ROUGE
BIANCO
ROSSO
BLANCO
ROJO
5
63-2567—3
ML4125, ML4135, ML8125, ML8135 FAST-ACTING, TWO-POSITION ACTUATORS
OPERATION
CHECKOUT
The actuators are operated by an spst two-position controller.
When using an spst two-position controller, the actuator drives
to the damper fully open position when controller contact
makes and spring returns to the damper fully closed position
when controller contact breaks. The actuator drops to holding
power level on detection of stall, independent of hub position.
ML4125A,B, ML4135 (120 Vac model)
1.
2.
Check damper position.
Connect 120 Vac to the black and white leadwires to
drive the damper to the open position. The actuator
should drive the damper.
3.
4.
5.
6.
If the actuator does not run, remove power for at least
two seconds.
If power fails, the actuator spring returns to the 0° position.
If the actuator spring returns, allow it to close entirely,
then return to step 2.
If the actuator does not spring return, verify that the
actuator is properly installed. See Installation section.
I
f the actuator is correctly installed but neither runs nor
spring returns, replace the actuator.
ML4125C,D (230 Vac model)
1.
2.
Check damper position.
Connect 230 Vac to the blue and brown leadwires to
drive the damper to the open position. The actuator
should drive the damper.
3.
4.
5.
6.
If the actuator does not run, remove power for at least
two seconds.
If the actuator spring returns, allow it to close entirely,
then return to step 2.
If the actuator does not spring return, verify that the
actuator is properly installed. See Installation section.
I
f the actuator is correctly installed but neither runs nor
spring returns, replace the actuator.
ML8125, ML8135 (24 Vac model)
1.
2.
Check damper position.
Connect 24 Vac to the red and black leadwires to drive
the damper to the open position. The actuator should
drive the damper.
3.
4.
5.
6.
If the actuator does not run, remove power for at least
two seconds.
If the actuator spring returns, allow it to close entirely,
then return to step 2.
If the actuator does not spring return, verify that the
actuator is properly installed. See Installation section.
If the actuator is correctly installed but neither runs nor
spring returns, replace the actuator.
63-2567—3
6
ML4125, ML4135, ML8125, ML8135 FAST-ACTING, TWO-POSITION ACTUATORS
D
F
I
Montageanweisung
Instructions d’Installation
Istruzioni per I’Installazione
NL Installatievoorschrift
DK Installasjonsinstruks
N
Installationsinstrukioner
SF Asennusohje
S
E
Installations Instrukioner
Instrucciones de montaje
A2
A
A1, A4
24 VAC
230 VAC
!
d
ASSEMBLY
EINBAU
D
F
I
MONTAGE
MONTAGGIO
a
NL MONTAGE
DK MONTERE
N
MONTERING
a
FIN ASENTAMINEN
S
E
MONTERA
MONTAJE
b
M11874
b
c
M11875
M11876
M11876
A3
A5
A6
MIN: 45 lb-in. (5.1 Nm)
MAX: 60lb-in. (6.8 Nm)
b
HEX
4mm
c
a
a
b
b
a
M12030
M11881
M11882
7
63-2567—3
ML4125, ML4135, ML8125, ML8135 FAST-ACTING, TWO-POSITION ACTUATORS
B
B1
B2
B4
24 VAC
230 VAC
!
a
b
M11887
DISASSEMBLY
AUSBAU
DÉMONTAGE
SMONTAGGIO
D
F
I
M11886
NL DEMONTAGE
DK AFMONTERE
DEMONTERE
FIN PURKAMINEN
N
B3
S
E
NEDMONTERA
DESMONTAJE
M11884
a
HEX
4mm
b
M11885
M11888
Home and Building Control Home and Building Control
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Honeywell
Honeywell Limited-Honeywell Limitée
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Golden Valley, MN 55422
35 Dynamic Drive
Scarborough, Ontario
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Printed in U.S.A. on recycled
paper containing at least 10%
post-consumer paper fibers.
63-2567—3 B.B. Rev. 7-00
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