basic fire and smoke training basic fire and smoke actuators & dampers
TRANSCRIPT
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Basic Fire and Smoke Training
Basic Fire and Smoke Actuators & Dampers
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Basic Fire and Smoke Training
Contents
• Basic damper and actuator concepts
• Types of Systems
• Control
• Standards and Codes
• Indicator Lights and Aux Switches
• Product & New Applications
• Specifications
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Basic Fire and Smoke Training
Basic damper and actuator concepts
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Basic Fire and Smoke Training
UL555 (fire dampers)
Courtesy of Pottorff
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Basic Fire and Smoke Training
Courtesy of Pottorff
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Basic Fire and Smoke Training
Jackshaft
Damper Sleeve
Actuator
UL555S (smoke dampers)
Courtesy of Pottorff
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Basic Fire and Smoke Training
Blade & Seal
Jackshaft
Stand-off bearing bracket
Damper Frame
Sleeve
Axle
Drive Arm
Frame
Side Seal
Courtesy of Pottorff
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Basic Fire and Smoke Training
Smoke Damper – no temperature limit. Controlled by smoke detectors or indirectly via smoke control panel.
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Basic Fire and Smoke Training
Manual Reset High Temperature Limit
165F
185F
210F
250F
350F
Combination Fire & Smoke
Courtesy of Pottorff
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Basic Fire and Smoke Training
Actuators are tested as an assembly with the damper.
Not listed alone.
UL555(S) requires 75 second time.
Test covers leakage, high velocity closing, other functions.
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Basic Fire and Smoke Training
Types of Systems
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Basic Fire and Smoke Training
Two types of damper use –
1.Containment / Compartmentation
90% simply close to prevent smoke or fire spread.
2. Engineered smoke control
Applied in zone pressurization, stairwells, elevator shafts, lobby pressurization, atria and large spaces. Can be exhaust or pressurization to prevent smoke spread.
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Basic Fire and Smoke Training
Compartmentation
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Basic Fire and Smoke Training
Engineered Smoke Control Systems
Organized control of smoke movement rather than containment is required as indicted in lessons learned from past fires.
The total situation is considered.
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Basic Fire and Smoke Training
Engineered Smoke Control Systems
Stairwell pressurizationAtria smoke extractionElevator shaft pressurizationVentilated lobbiesCorridor dampersCeiling dampersShaft dampersDuct dampersFire & Smoke doorsSmoke Extraction Shafts and FansSandwich or building pressurization systems
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Basic Fire and Smoke Training
Consultants will develop a rational analysis smoke control strategy
1. Sequence of operation
2. Detail the response to alarms. Manual stations will start purge or pressurization sequences in stairwells. Floor by floor sequence to contain smoke.
3. Positive Feedback and what the system should do if feedback is not received in the specified time.
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Basic Fire and Smoke Training
Dedicated: no other function but smoke control. Non-dedicated may be a HVAC air handling unit.
a
RELIEF FAN SYSTEM
OA
RF RA
SAMA
RP
RAD
RFD
OAD
Dedicated & Non-dedicated Smoke Control
Non-dedicated
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Basic Fire and Smoke Training
Each actuator gets separate output from smoke control panel.
Reopenable dampers can assist in exhausting dangerous amounts of toxic, low temperature smoke from the fire zone and to pressurize adjacent zones to prevent spread.
Courtesy of HPAC Engineering
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Basic Fire and Smoke Training
Control
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Basic Fire and Smoke Training
Smoke Control can be managed by BAS or the Fire Alarm System
Some trend to shift to an integrated system - Fire protection and BAS combined.
UL864 required for Fire Alarms, not actuators or dampers.
Control
Courtesy of HPAC Engineering
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Basic Fire and Smoke Training
BAS or the Fire Alarm System can provide:
1. Hardware for operation
2. Firefighter Smoke Control Station
3. Process logic to control devices
4. Monitoring
5. Initiation of automatic smoke control can come from smoke detectors, alarms, water flow switches in sprinkler pipes, or pull stations into the fire system.
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Basic Fire and Smoke Training
The Front End of every smoke control system is the Fire Fighters Control Station:
LED’s associated with every fan & damper
Manual overrides for every fan & Damper
Fans & dampers are typically tied to BAS
Information from dampers & fans is taken and processed by either the Fire or BAS system to control the correct fans & dampers at the right time.
Fire Fighters Smoke Control System:
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Basic Fire and Smoke Training
SMOKE CONTROL
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Basic Fire and Smoke Training
LOCAL SMOKE CONTROL
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Basic Fire and Smoke Training
Factory mounted smoke detector
Courtesy of Pottorff
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Basic Fire and Smoke Training
Actuator
Power
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Basic Fire and Smoke Training
Will need parallel wiring for two large section dampers.
Actuators
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Basic Fire and Smoke Training
80% of dampers use this configuration. Single sensor, manual reset.
Smoke detector, high temp limit, contact on fire alarm control panel or system.
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Basic Fire and Smoke Training
HEAT, SMOKE DETECTOR, OR OTHER RELAY FROM ALARM SYSTEM
AUTO:
IF DUCT TEMPERATURE REACHES 165F OR EXTERNAL ALARM CONTACT OPENS, POWER IS CUT TO ACTUATOR AND DAMPER SPRINGS CLOSED. MANUAL RESET.
Reopenable Damper
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Basic Fire and Smoke Training
High Limit Sensor and Reset switch
Status Lights (Optional)
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Basic Fire and Smoke Training
Standards & Codes
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Basic Fire and Smoke Training
Vertical Shafts – fire-smoke dampers required at penetrationsThis is one of the the most important protection
against smoke spread in a fire.
Elevator shafts and lobbies – sprinkler trade-offs exist in IBC, not UBC.
Corridors – derated requirement in IBC, not UBC. These are the escape paths. They should be protected.
You are not safer in an IBC building.
Pressurized stairway – required in IBC and UBC. People must be able to escape fires.
Codes and Standards
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Basic Fire and Smoke Training
UL555 & UL555S
• Damper manufacturer requirement• High temperature test for 250F or 350F
• Damper and Actuator
• Heated Air Flow test ensures actuator closes damper.
• Others for damper only: Drop test, salt spray, Leakage rating
• 75 second is the UL 15 time requirement. UBC required 15 seconds for some years.
Belimo is 15 seconds for FSLF and FSNF; 75 sec drive and 20 sec spring for FSAF.
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Basic Fire and Smoke Training
NFPA
• 90A, B HVAC• 92A, B Smoke Control Systems for atria and large
spaces.• 80 (fire) & 105 (smoke) doors and dampers
• TESTING REQUIREMENTSEvery 4 years per NFPA. Local codes vary.
Hospitals every 6 years.
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Basic Fire and Smoke Training
NFPA
• NFPA 80 is fire opening protectives – fire doors and dampers
• NFPA 105 is smoke opening protectives – smoke doors and dampers.
• Testing requirements:• At end of first year• Every 4 years• Except hospitals – every 6 years.
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Basic Fire and Smoke Training
Local Codes
• Vary by city, county, state, region
• NFPA 5000 is not used. • IBC is now dominant
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Basic Fire and Smoke Training
Codes and Standards are quite intensive a subject. Not covered here in any detail.
Smoke Control System RequiredAtria, High rise smokeproof exit enclosures (>75’ ),underground buildings, auditoriums & stages.
Smoke Dampersrequired at smoke barrier penetrations
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Basic Fire and Smoke Training
Life Safety Standards and Codes are always changing and developing.
Trade-offs between levels of cost and safety will always exist. Different views exist.
Purpose of Life Safety is to protect people, not buildings. By protecting the building we protect people. First code to clearly state this was the 1997 UBC.
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Basic Fire and Smoke Training
• Codes require life safety systems be maintained in operating condition.
• Rules are mostly unwritten.
• Use common sense – if it breaks, fix it.
• AHJ – usually the Fire Marshal – is the final authority on dampers and alarms.
Actuator & Damper Replacement and Repair
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Basic Fire and Smoke Training
Actuator & Damper Replacement and Repair
• NFPA 80 & 105 require maintenance and repair or replacement.
• UL accepts actuator replacement; does not regulate.
• Use Belimo or damper manufacturer instructions.
• Actuator should be UL555S Listed with the manufacturer.• “Equal or Better” is required.
• Separate Belimo documents detail repairs on different types of dampers.
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Basic Fire and Smoke Training
Balanced Strategy
Sprinklers Structural CompartmentalizationAlarmsFire and Smoke DampersSmoke Control SystemsMaintenance
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Basic Fire and Smoke Training
Indicator Lights and Aux Switches
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Basic Fire and Smoke Training
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Basic Fire and Smoke Training
Indicator Lights
Red Green Amber
Courtesy of Pottorff
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Basic Fire and Smoke Training
Product & New Applications
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Basic Fire and Smoke Training
Belimo F&S Product Line
FSLF 4 sq.ft.
FSNF 12 sq.ft.
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Basic Fire and Smoke Training
FSAF max 18 sq.ft.
2-position 24, 120, 230 volt.
24 VDC as well as AC
FSAF24-BAL 3-Position
FSAF24-SR 2-10Vdc Proportional
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Basic Fire and Smoke Training
Underfloor HVAC Pressure Control
FSAF24-SR
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Basic Fire and Smoke Training
Stairwell Pressurization
Stairwell pressurization allows occupants to safely exit the building, while firefighters can stage and safely access an upper level fire.
Typically one damper
and pressure
sensor per 3 floors.
Stairwell
Pressurization
Actuator Damper
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Basic Fire and Smoke Training
Proportional 2-10Vdc
F&S Actuator
FSAF24-SR
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Basic Fire and Smoke Training
Com 24VACHot 24VAC
123
Maximum Potentiometer20 % to 100%
Close to Overridefull open
FSAF24 - BAL
Powering wire 3, regardless of state of wire 2, drives actuator full open.
Wiring 1
With 1 & 2 powered, actuator drives to Maximum Potentiometer setting.
Unique, first of its kind.
3-position for balancing and F&S
BALANCING
FIRE & SMOKE
FSAF24-BAL
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Basic Fire and Smoke Training
Why Specify
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Basic Fire and Smoke Training
1. 5 year warranty
2. Micro Controller: Actuator cannot burn out if stalled before full rotation is achieved.
3. Motor runs cool for a long life span.
4. DC Motor: No noise when holding.
5. Very low Current Draw
6. Steel cold-weld clamp: no shaft slip
7. Steel housing: rugged integrity
8. ISO 9001 Quality Control
9. Not the cheapest.
Belimo Quality
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Basic Fire and Smoke Training
1. Fire and Smoke actuators have been treated like a commodity item. This has resulted in poor quality and lifespan in the market.
2. Most specifications put the dampers in Duct Accessories.
Life safety should be treated with more respect.
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Basic Fire and Smoke Training
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Basic Fire and Smoke Training
THANK YOU
AMERICAS