Fire and Smoke Damper ActuatorField Replacement GuideREPLACEMENT GUIDEThe following guidelines are crucial to keep fire and smokedamper assemblies operating properly, and to stay inadherence to standards and codes.FIRE CODE REFERENCES ANDINFORMATIONHoneywell Fire and Smoke Actuators are designed to meetboth UL555 and UL555S safety requirements forcombined fire and smoke applications, if applicable.The following maintenance guidelines are a summary ofthe National Fire Protection Association (NFPA) Codes aswell as Air Movement and Control Association (AMCA) andHoneywell manuals. We recommend that you becomefamiliar with NFPA 80, 90A, 92A & B, and 105 and AMCApublication 503. Be aware that other codes, such,International Building Code (IBC), regional, state and localcodes, may also apply to your area.REPLACEMENT GUIDELINESAPPLICATIONSafety should never be left to chance. Honeywell fire andsmoke actuators are designed to meet both UL-555 andUL555S 350 F safety requirements for fire and smokeapplications, if applicable. Fast-acting actuators closedampers in 15 seconds, and the integral spring returnensures the consistent, proper level of torque. For thehighest level of occupant safety, you can count onHoneywell.Fire and Smoke actuators and assemblies must functionproperly during a fire or life-safety emergency. HoneywellFire and Smoke Actuators provide fast action whentimeliness is key in preventing the spread of fire andsmoke. Proper installation and periodic performancetesting are required to ensure fire and smoke damperassemblies will fully function should an emergency occur.Actuator SpecificationsUL555 and UL555S require fire and smoke actuators to betested to 20,000 close and reopen cycles and close within75 seconds. UL555 also requires them to be rated to either250 F or 350 F. If UL does not apply to your region, pleaseomit.Honeywell fire and smoke actuators are rated to 30,000cycles, operate within 15 seconds, and are rated to 350 F.ApplicationsCombined Fire and smoke dampers are used to maintainfire barrier ratings when walls and floors are penetrated byductwork.Smoke dampers are used to prevent the passage of smokethrough the HVAC system or from one side of a fire-ratedseparation to the other. They may be dedicated to thisfunction or also function as HVAC dampers.38-00001-02

FIRE AND SMOKE DAMPER ACTUATOR FIELD REPLACEMENT GUIDEDamper Manufacturer’s Guidelinesc. Use the signal from the damper’s position indication device to confirm that the damper reachesits fully-closed position.d. Re-apply electrical power to re-open the damper.e. Use the signal from the damper’s position indication device to confirm the damper reaches itsfully-open position.When replacing actuators, it is important to follow theguidelines that are provided by the damper manufacturerfor the damper assembly. When replacing a fire and smokeactuator the replacement should be either like-for-likewith the original, factory-mounted actuator, or atechnically superior product where the total assembly haspassed UL testing with the damper manufacturer.Option 2: Dampers without position indication:a. Visually confirm that the damper is fully-openposition.b. Ensure that all obstructions, including hands,are out of the path of the damper blades.c. Remove electrical power or air pressure from theactuator to allow the actuator’s spring return feature to close the damper.d. Visually confirm that the damper closes completely.e. Re-apply electrical power to re-open the damper.f. Visually confirm that the damper is in the fullyopen position.Please refer to the damper manufacturer’s guidelines fordetails.MAINTENANCEINFORMATIONFire and Smoke damper assemblies must undergoperiodic performance testing to be properly maintainedand to ensure they are functioning and will function in afire or life-safety emergency.The NFPA codes require combined fire and smokedampers be tested and inspected at the time the system iscommissioned, after it has been balanced, and one yearafter installation. Then they need to be tested andinspected every 4 years, except in hospitals, where theyneed to be tested and inspected every 6 years. See "Option1” and “Option 2” in this section for detailed testinstructions.AMCA suggests that smoke dampers be tested at leastsemi-annually. Smoke dampers should be operated, andthe correct outputs should be observed, to verifyoperation. These tests need to also be conducted understandby power, if used. the damper is not operable, it must be repaired assoon as possible. If the actuator has failed, replace itwith a UL approved actuator if required. See Table 1.See Figs. 2-3 for mounting and installation information and Figs. 4-9 for wiring. After these repairs, thedamper should be tested again.If there is a latch, verify that it is operable.Perform any other damper manufacture recommended maintenance such as lubrication.Following the test and any repairs, document thelocation of the damper, the date, the inspector, anddeficiencies or repairs. Keep the record for the life ofthe damper, and have it available as you may need toshow it to an inspector.Honeywell Fire and Smoke Actuators are found incombination fire and smoke damper assemblies that use abi-metallic disc type thermostat to interrupt electricalpower to the actuator at a specified temperature. Once thespecified temperature is reached, power will beinterrupted and the spring return of the actuator will closethe damper. When these actuators are used in smokedamper applications, they are usually controlled by smokedetectors or fire alarms.Periodic inspection includes:1. Verify that there is full unobstructed access to thedamper2. Test the damper with normal HVAC airflow and verifythat it opens following either Option 1 or Option 2.There should be no interference due to rust, damaged frame or blades, or other moving parts.Option 1: Dampers with Position Indication Wired toindication Lights, or Control Panels:Switches can be wired to local or remote controlpanels or building automation systems (BAS) toindicate that the damper is in the fully-openposition, fully-closed position, or neither.a. Use the signal from the damper’s position indication device to confirm that the damper is in thefully-open position.b. Remove electrical power or air pressure from theactuator to allow the actuator’s spring return feature to close the damper.38-00001—022Fig. 1. Typical Fire and Smoke Damper Assembly.Source: AMCA International: Guide for Commissioningand Periodic Performance Testing of Fire, Smoke,and other Life Safety Related Dampers, 2012.

FIRE AND SMOKE DAMPER ACTUATOR FIELD REPLACEMENT GUIDEPRODUCT INFORMATIONTorqueModelNumberVoltageSPSTAux SwitchLegacyHoneywellBelimoCrossSiemensCross120 4115H1002ML4115J1009ML4202F1000ML4302F1008FSLF120 USNoneMS4104F1210120 Vac2 InternalNoneFSLF120-S USNoneMS4604F1010230 4702F1009ML4802F1007FSLF230 USNoneMS4604F1210230 Vac2 InternalNoneFSLF230-S USNoneMS8104F101024 8115H1008ML8115J1005ML8202F1006ML8302F1004FSLF24 USNoneMS8104F21024 Vac2 InternalNoneFSLF24-S USNone120 Vac0MS4209F1007MS4309F1005FSNF120 USGND221.1UMS4109F1210120 Vac2 InternalNoneFSNF120-S USGND226.1UMS4609F1010230 Vac0MS4709F1014MS4809F1012FSNF230 USGND321.1UMS4609F1210230 Vac2 InternalNoneFSNF230-S USGND326.1UMS8109F101024 Vac0MS8209F1003MS8309F1001FSNF24 USGND121.1UMS8109F121024 Vac2 InternalNoneFSNF24-S USGND126.1UMS4120F1006120 Vac0NoneFSAF120 USGGD221.1UMS4120F1204120 Vac2 InternalNoneFSAF120-S USNoneMS4620F1005230 Vac0NoneFSAF230 USGGD321.1UMS4620F1203230 Vac2 InternalNoneFSAF230-S USNoneMS8120F100224 Vac0NoneFSAF24 USGGD121.1UMS8120F120024 Vac2 InternalNoneFSAF24-S USNone30 lb-in(3.4 Nm)MS4104F101080 lb-in (9 Nm)175 lb-in(20 Nm)MS4109F1010Table 1. Fire and Smoke Cross Reference.338-00001—02

FIRE AND SMOKE DAMPER ACTUATOR FIELD REPLACEMENT GUIDEINSTALLATION AND WIRING2 (51)1 (25)90 3-15/16 (100)2 (50)0 0)8-15/16(227)2 (51)3-1/4 (83)4 (102)1/16(2)9/16 (14)5-1/8 (130)M20051AM34622Fig. 2. Dimensions for MS4104, MS4109, MS4604,MS4609, MS8104, and MS8109 Series actuators.See the following literature for further details andmounting instructions: Product Data and Installation Instructions: 63-2740 Specification data: 38-0000638-00001—0241/4 (6)2-15/16 (75)Fig. 3. Dimensions for MSXX20F actuators.See the following literature for further details andmounting instructions: Product Data and Installation Instructions: 63-2584 Specification Data: 63-2592

FIRE AND SMOKE DAMPER ACTUATOR FIELD REPLACEMENT GUIDEWiringFor 30 lb-in and 80 lb-in (3.4 Nm, 9 Nm)models:For 175 lb-in (20 Nm) models:MS8120FL2 ( )BLACKL2 ( )BLACK24 VAC24 VACREDREDL1 ( )L1 ( )GREEN7 AUXILIARYSWITCH85 AUXILIARYSWITCH7 AUXILIARYSWITCHBLUEBLUE85 053BM34624Fig. 7. Typical 24 Vac wiringFig. 4. Typical 24 Vac wiring.MS4120FL2 ( )WHITE120 VACBLACKL1 ( )85 AUXILIARYSWITCHWHITEBLACKL1 ( )GREEN7 AUXILIARYSWITCHL2 ( )120 VACBLUEGREEN7 AUXILIARYSWITCHBLUEYELLOW85 4625Fig. 8. Typical 120 Vac wiring.Fig. 5. Typical 120 Vac wiring.MS4620FL2 ( )L2 ( )BLUE230 VACL1 ( )85 AUXILIARYSWITCHBROWNL1 ( )GREEN7 AUXILIARYSWITCHBLUE230 VACBROWNBLUEGREEN7 AUXILIARYSWITCHBLUEYELLOW85 4626Fig. 9. Typical 230 Vac wiring.Fig. 6. Typical 230 Vac wiring.538-00001—02



FIRE AND SMOKE DAMPER ACTUATOR FIELD REPLACEMENT GUIDEBy using this Honeywell literature, you agree that Honeywell will have no liability for any damages arising out of your use ormodification to, the literature. You will defend and indemnify Honeywell, its affiliates and subsidiaries, from and against anyliability, cost, or damages, including attorneys’ fees, arising out of, or resulting from, any modification to the literature by you.Home and Building TechnologiesIn the U.S.:Honeywell1985 Douglas Drive NorthGolden Valley, MN 55422-3992customer.honeywell.com U.S. Registered Trademark 2016 Honeywell International Inc.38-00001—02 M.S. Rev. 11-16Printed in United States

Siemens Cross 30 lb-in (3.4 Nm) MS4104F1010 120 Vac 0 ML4115A1009 ML4115A1017 . FSNF120 US GND221.1U MS4109F1210 120 Vac 2 Internal None FSNF120-S US GND226.1U MS4609F1010 230 Vac 0 MS4709F1014 . FSNF24 US GND121.1U MS8109F1210 24 Vac 2 Internal None FSNF24-S US GND126.1