Honeywell FAST-ACTING, TWO-POSITION ACTUATORS ML4202 Installation Instructions

ML4202, ML4302, ML4702, ML4802,
ML8202, ML8302 Fast-Acting,
Two-Position Actuators
FOR FIRE/SMOKE CONTROL APPLICATIONS
APPLICATION
The ML4202, ML4302, ML4702, ML4802, ML8202, ML8302
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.
APPLICABLE LITERATURE
— Motor/Actuator Selection Guide
for Damper Applications
— Engineering Manual of Automatic Control
(also called The Gray Manual)
— Direct Coupled Actuator
Quick Selection Guide
— Damper Torque Calculator

SPECIFICATIONS

IMPORTANT
The actuator is designed to meet UL555S standards
at 350°F (176°C). The actuator must be tested with
the damper to achieve this rating.
Models: See Table 1.
Dimensions: See Fig. 1.
Minimum Damper Shaft Length: 1-3/4 in. (45 mm).
Device Weight: 5 lb (2.3 kg).
Stroke: 95° ± 3°, mechanically limited.
Electrical Ratings: See Table 1.
Electrical Connections:
Two color coded 16 in. leads; includes ground screw.
One 7/8 in. hole for conduit connections (fittings not included).
Mounting: 3/8 to 1/2 in. square or round damper shafts.
Actuator can be mounted with shaft in any position. Secure
hub to shaft with: Two 1/4-28 UNF set screws. Use 1/8 in.
Allen wrench to tighten set screws.
IMPORTANT
Honeywell does not recommend using linkages with
these actuators because side-loading of the output
hub reduces actuator life.
Ambient Ratings:
Operating Temperature: 0 to 130°F (-18 to 55°C).
Shipping/Storage Temperature: -40 to 140°F (-40 to 60°C).
Humidity: 5% to 95% rh, noncondensing.
Torque Rating (at rated voltage):
Typical Holding: 100 lb-in. (11.3 N•m).
Stall Maximum: 150 lb-in. (17 N•m).
Spring Return: 20 lb-in. (2.2 N•m).
350°F Driving: 20 lb-in. (2.2 N•m).
Design Life (at Rated Voltage): 60,000 full stroke cycles.
Noise Rating (Maximum):
Driving Open: 65 dBA at 1m.
Holding: 20 dBA at 1m (no audible noise).
63-8419
77-1100
63-8553
Model
63-8437
ML4202
ML4302
ML4702
ML4802
ML8202
ML8302
Cycling Requirements:
Prolonged holding-period (1 year) testing of these actuators
has been performed with no spring return failures. The
actuator and the internal spring are designed to require no
special cycling during long-term holding.
Honeywell recommends following all local, state and national
codes for periodic testing of the entire smoke control
system. Refer to National Fire Protection Association
(NFPA) National Fire Codes®: NFPA90A, NFPA92A and
NFPA92B for your application.
NFPA recommends periodic examination of each fire/smoke
damper (semi-annually or annually) to ensure proper
performance.
Timing (At Rated Torque and Voltage):
Drive Open:
ML4202, ML4302, ML4702, ML4802: 25 sec maximum,
ML8202, ML8302: 25 sec maximum, 22 sec typical.
Spring Close: 15 sec.
Environmental Protection Ratings: NEMA1.
Approvals: See Table 2.
N314
INSTALLATION INSTRUCTIONS
Table 1. Models.
Spring Power Consumption
Return
Direction Running
cw 0.18A, 18W 0.11A, 9W
ccw
cw 0.13A, 18W 0.10A, 11W
ccw
cw 16 VA
ccw
18 sec typical.
5-Year
Limited
Warranty
Voltage Input
Holding in Vac
120 ±10%,
60 Hz
230 ±10%,
50/60 Hz
8 VA 24 +20%, -10%
50/60 Hz
62-0194-3