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- SECTION 15831
-
- AIR CURTAINS, COMMERCIAL
- NOTE ** This section is based on products manufactured by
- Mars(R) Air Doors, at the following address:
- NOTE ** 14716 South Broadway
- NOTE ** Gardena CA 90248
- NOTE ** Tel: (213) 770-1555
- NOTE ** Tel: (800) 421-1266
- NOTE ** Fax: (310) 324-3030
- NOTE **
- NOTE ** Mars Air Doors offers a complete line of Air
- Curtains providing the benefits of temperature
- control and environmental separation. Models are
- offered in a commercial and industrial design and
- can be configured with heat. Heated units include
- gas, electric, steam and hot water coil models.
-
- NOTE ** A typical installation is over a building's
- exterior door or window opening. They provide
- excellent protection at reducing a building's
- heating and cooling costs when these exterior doors
- need to be opened. At the same time, they repel
- gusts of wind and minimize the entrance of
- windborne dust, fumes, pollutants, and flies.
- Additionally, they help to expedite the flow of
- traffic from one work area to another or in and out
- the building, by providing an unobstructive view of
- the opening. This section covers the commercial
- part of their product line: "Service Window,"
- "Whispurr Air(R)," "C-CH-CHS," "Combi(R) and
- Super Combi," "Hepac(R)," and National Sanitation
- Foundation (NSF) models. Commercial models
- configured with heat are available in electric heat
- only. For other forms of heat, see their other
- Section 15832 for industrial models.
- NOTE **
- NOTE ** SECTION 15831 - AIR CURTAINS, COMMERCIAL, Copyright
- 1998, The Architect's Catalog, Inc.
-
- PART 1 GENERAL
-
- 1.1 SECTION INCLUDES
- NOTE ** Select paragraphs below applicable to project.
-
- A. Service Window Models.
-
- B. Whispurr Air(R) Models.
-
- C. C-CH-CHS Models.
-
- D. Combi(R) and Super Combi Models.
-
- E. National Sanitation Foundation (NSF) Models.
-
- F. High Efficiency Particulate Air Curtain (HEPAC) Models.
- NOTE ** The following includes service window, C-CH-CHS
- models only.
-
- G. Air Curtains with Electric Heat.
-
- 1.2 RELATED SECTIONS
- NOTE ** Sections listed in the following paragraphs
- represent those most likely to relate to this
- section; coordinate with other sections, delete
- those not relevant to this project, add others as
- required.
-
- A. Section 08110 - Steel Doors and Frames.
-
- B. Section 08330 - Coiling Doors and Grilles.
-
- C. Section 08400 - Entrances and Storefronts.
-
- D. Section 08500 - Windows.
-
- E. Section 08580 - Pass Windows.
-
- F. Sections of Division 16 affecting, or affected by,
- construction activities of this section.
-
- 1.3 SUBMITTALS
-
- A. Submit under provisions of Section 01300.
-
- B. Product Data: Manufacturer's descriptive literature for
- products specified in this section; indicate options
- specified.
-
- C. Shop Drawings: Indicate installation and connection
- details for air curtains.
-
- D. Quality Assurance Submittals:
- 1. Certificates: Indicate compliance to Regulatory
- Requirements specified in QUALITY ASSURANCE Article
- of this section.
- 2. Manufacturer's instructions: Printed installation
- instructions for each specified product.
-
- E. Closeout Submittals:
- 1. Operation and maintenance data: Manufacturer's
- printed instructions for operating and maintaining
- air curtain components.
- 2. Warranty documents: Issued and executed by
- manufacturer.
-
- 1.4 QUALITY ASSURANCE
-
- A. Manufacturer Qualifications: Minimum five years
- documented experience producing respective products
- specified in this Section.
- NOTE ** Delete agency certifications below not required for
- project.
-
- B. Regulatory Requirements: Product compliance with the
- following regulatory agencies:
- 1. Underwriters Laboratories.
- 2. National Sanitation Foundation (NSF models only).
- 3. National Electrical Code.
- 4. United States Food and Drug Administration.
- 5. United States Department of Agriculture.
-
- 1.5 DELIVERY, STORAGE, AND HANDLING
-
- A. Store products of this section in manufacturer's unopened
- packaging until installation.
-
- B. Maintain dry, heated storage area for products of this
- section until installation of products.
-
- 1.6 WARRANTY
-
- A. Supply manufacturer's standard warranty against defects
- in product workmanship and materials.
-
-
- PART 2 PRODUCTS
-
- 2.1 MANUFACTURERS
-
- A. Acceptable Manufacturer: Mars Air Doors, 14716 South
- Broadway, Gardena CA 90248; ASD. Tel: (213) 770-1555 or
- (800) 421-1266; Fax: (310) 324-3030.
- NOTE ** Delete one of the two following paragraphs;
- coordinate with Division 01 requirements.
-
- B. Requests for substitutions will be considered in
- accordance with provisions of Section 01600.
-
- C. Substitutions: Not permitted.
-
- 2.2 MANUFACTURED UNITS
- NOTE ** Retain following paragraph if specifying Mars Model
- Number W-25 service window air curtains. Model W-
- 25 provides protection from insects, dust, and
- fumes; available heated or unheated.
- NOTE **
- NOTE ** The housing will not crack, chip, fade, or peel,
- and is impervious to high humidity and all climatic
- conditions.
-
- A. Service Window Air Curtains:
- 1. Acceptable Product: Mars Model Number W-25.
- 2. Product Description: Self-contained electrically-
- operated air curtain for mounting at head or jamb of
- openings up to 60 inches (1,524 mm) high by 30 inches
- (762 mm) wide.
- 3. Housing: One piece molded high impact white
- polyethylene material; resistant to high humidity and
- all climatic conditions. Contains factory-provided
- mounting brackets at each end, and removable,
- washable aluminum mesh air intake filter.
- NOTE ** Delete one of the following two paragraphs.
- Variable-speed fan assembly in the first paragraph
- is available on heated models only.
- 4. Fan Assembly: Variable-speed, double-shaft motor
- with dual inlet fans having capacity to provide 1,400
- feet per minute (7 m/sec) air velocity and 1,900
- cubic feet per minute (897 L/sec) air volume at
- nozzle, and minimum 600 feet per minute (3 m/sec) air
- velocity at 2 feet (610 mm) above counter when
- mounting height does not exceed 5 feet (1,524 mm)
- above counter.
- 5. Fan Assembly: Double-shaft motor with dual inlet
- fans having capacity to provide 1,400 feet per minute
- (7 m/sec) air velocity and 1,900 cubic feet per
- minute (897 L/sec) air volume at nozzle, and minimum
- 600 feet per minute (3 m/sec) air velocity at 2 feet
- (610 mm) above counter when mounting height does not
- exceed 5 feet (1,524 mm) above counter.
- NOTE ** Delete following paragraph if specifying unit
- without heater.
- 6. Heater Assembly: Electric heater having 4000 watt,
- 13,700 BTU (14,454 J) per hour output, with manual-
- reset thermal overload switch and on/off control
- switch.
- 7. Operating Noise Level: 59 decibels on A scale,
- measured from interior, at 10 feet (3.048 m) from
- unit.
- NOTE ** Retain one of following three paragraphs; retain
- first or second paragraph if specifying unit
- without heater, retain third paragraph if
- specifying unit with heater.
- 8. Utility Requirements: 115 Volts AC, single-phase,
- 2.6 Amperes.
- 9. Utility Requirements: 208/230 Volts AC, single-
- phase, 1.3 Amperes.
- 10. Utility Requirements: 208/230 Volts AC, single-
- phase, 22 Amperes.
- NOTE ** Retain following paragraph if specifying Mars
- Whispurr Air(R) unit. These units are 7-1/2 inches
- (190 mm) high, providing a low-profile design for
- restricted ceiling heights. Installed inside, they
- provide a cost-effective solution for doors in
- continual use or left open for extended periods.
- They can also be used over walk-in cooler/freezer
- doors to reduce cold air loss when door is opened.
-
- B. Air Curtains:
- NOTE ** Insert Model Number information in following
- paragraph.
- 1. Acceptable Product: Mars Whispurr Air(R) Model
- Number WA-__.
- 2. Product Description: Self-contained electrically-
- operated air curtain for mounting at head of openings
- up to 7 feet (2.134 m) high by 72 inches (1,829 mm)
- wide.
- 3. Housing:
- a. One piece molded, high impact, white polyethylene
- material; resistant to high humidity and all
- climatic conditions. Discharge outlet nozzle
- directional vanes adjustable +/- 20 degrees front
- to back.
- b. Mounting plate provided with keyhole slot for
- fast and easy installation and maintenance
- NOTE ** Delete all but one of the following subparagraphs.
- White is production color; custom colors available.
- c. Color: White.
- d. Color: Gray.
- e. Color: Gold.
- f. Color: Beige.
- g. Color: Dark Bronze.
- h. Color: Custom color selected by Architect.
- NOTE ** Insert information into following paragraph;
- consult manufacturer's product data for specific
- model specifications.
- 4. Blower Assembly: Variable-speed motor and switch;
- field adjustable with control knob capable of
- reducing outlet air velocity up to 60 percent.
- Injection molded type blower wheel utilizing
- PolyMars(R) material; capacity to provide 1,800 feet
- per minute (9 m/sec) air velocity and ____ cubic feet
- per minute (____ L/sec) air volume at nozzle.
- NOTE ** Retain following paragraph if specifying unit with
- optional door-activated microswitch.
- 5. Door-Activated Microswitch: Supply microswitch for
- automatic on/off control; turns air curtain on when
- door is opened and off when door is closed; field
- installed.
- NOTE ** Delete one of the following two paragraphs.
- Plunger type is for doors with hinges (swing
- doors), roller type for all other types of doors.
- a. Type: Plunger.
- b. Type: Roller.
- NOTE ** Insert information into following paragraph;
- consult manufacturer's product data for specific
- model specifications.
- 6. Operating Noise Level: __ decibels on A scale,
- measured from interior, 10 feet (3.048 m) from unit.
- NOTE ** Insert information into following paragraph;
- consult manufacturer's product data for specific
- model specifications.
- 7. Utility Requirements: ___ Volts AC, single-phase,
- ___ Ampere.
- NOTE ** Retain following paragraph if specifying a Mars
- Unheated C, CH, or CHS unit. The C Model is
- designed for use over customer entrances, acting as
- a barrier against outside climate. The CH/CHS
- Models produce greater air velocity with slightly
- higher sound levels and are recommended over
- receiving and service entrance doors at
- restaurants, hospitals, schools, food processing
- plants, etc. The C, CH, and CHS models are
- effective up to 8 feet (2.438 m), 10 feet (3.048
- m), and 12 feet (3.658 m) high, respectively.
-
- C. Air Curtains:
- NOTE ** Insert Model Number information in following
- paragraph.
- 1. Acceptable Product: Mars Model Number ____ C__.
- 2. Product Description: Self-contained electrically-
- operated air curtain for mounting at head of
- openings.
- 3. Housing:
- a. One piece molded white high-impact polyethylene
- material, resistant to high humidity and all
- climatic conditions.
- b. Internal steel bracket with sufficient strength
- to provide housing rigidity and fastening to
- wall.
- c. Mechanically field adjustable variable air intake
- louver assembly capable of reducing outlet air
- velocity up to 60 percent with louvers in totally
- enclosed position.
- d. Wedge shaped discharge air outlet nozzle
- containing adjustable air directional vanes with
- a +/- 20 degree sweep from front to back.
- NOTE ** Delete one of the following two paragraphs. White
- is production color; gold, gray, beige, dark
- bronze, and custom colors are available at a
- nominal charge.
- e. Color: White.
- f. Color: ______________.
- NOTE ** Insert information into following paragraph;
- consult manufacturer's product data for specific
- model specifications.
- 4. Blower Assembly: Direct-drive, double-width and
- double-inlet squirrel cage steel blower wheels having
- capacity to provide ____ feet per minute (____ m/sec)
- air velocity and ____ cubic feet per minute (____
- L/sec) air volume at nozzle.
- NOTE ** Delete three of the following four paragraphs;
- consult manufacturer's product data for specific
- model specifications.
- 5. Motor: Single 1/2 horsepower, maximum 1,750
- revolutions per minute, single-speed, with two-speed
- option.
- 6. Motor: Single 1 horsepower, maximum 1,750
- revolutions per minute, single-speed, with two-speed
- option.
- 7. Motor: Two 1/2 horsepower, maximum 1,750 revolutions
- per minute, single-speed, with two-speed option, both
- controlled by single switch.
- 8. Motor: Two 1 horsepower, maximum 1,750 revolutions
- per minute, single-speed, with two-speed option, both
- controlled by single switch.
- NOTE ** Retain following paragraph if specifying unit with
- optional door-activated microswitch.
- 9. Door-Activated Microswitch: Supply microswitch for
- automatic on/off control, on when door is opened, off
- when door is closed; field installed.
- NOTE ** Delete one of the following two paragraphs.
- Plunger type is for doors with hinges (swing
- doors), roller type for all other types of doors.
- a. Type: Plunger.
- b. Type: Roller.
- NOTE ** Insert information into following paragraph;
- consult manufacturer's product data for specific
- model specifications.
- 10. Operating Noise Level: __ decibels on A scale,
- measured from interior, 10 feet (3.048 m) from unit.
- NOTE ** Insert information into following paragraph;
- consult manufacturer's product data for specific
- model specifications.
- 11. Utility Requirements: ___ Volts AC, ______-phase,
- ___ Ampere(s).
- NOTE ** Retain following paragraph if specifying Mars
- Heated Model C, CH, or CHS unit. Heated air
- curtains must be mounted on inside of building.
- They come complete with air curtain, motor control
- panel (factory mounted to air curtain housing) and
- wall mounted thermostat (shipped loose to be field
- installed). They can be used with fan only in warm
- weather, or with fan and heater in cold weather
- when they will contribute to the building heating
- system. Heated air curtains should primarily be
- used to reduce the "wind chill" effect of the air
- stream for those walking through it.
-
- D. Air Curtains with Heater Assemblies:
- NOTE ** Insert Model Number information in following
- paragraph; C-1 or C-3, CH-1 or CH-3, CHS-1 or CHS-
- 3.
- 1. Acceptable Product: Mars Model Number Heated___ C__.
- 2. Product Description: Self-contained electrically-
- operated air curtain for mounting at head of
- openings.
- 3. Housing:
- a. One piece molded white high-impact polyethylene
- material, resistant to high humidity and all
- climatic conditions.
- b. Internal steel bracket with sufficient strength
- to provide housing rigidity and fastening to
- wall.
- c. Mechanically field adjustable variable air intake
- louver assembly capable of reducing outlet air
- velocity up to 60 percent with louvers in totally
- enclosed position.
- d. Wedge shaped discharge air outlet nozzle
- containing adjustable air directional vanes with
- a +/- 20 degree sweep from front to back.
- NOTE ** Delete one of the following two paragraphs. White
- is production color; gold, gray, beige, dark
- bronze, and custom colors are available at a
- nominal charge.
- e. Color: White.
- f. Color: ______________.
- NOTE ** Insert information into following paragraph;
- consult manufacturer's product data for specific
- model specifications.
- 4. Blower Assembly: Direct-drive, double-width and
- double-inlet squirrel cage steel blower wheels having
- capacity to provide ____ feet per minute (____ m/sec)
- air velocity and ____ cubic feet per minute (____
- L/sec) air volume at nozzle.
- NOTE ** Delete three of the following four paragraphs;
- consult manufacturer's product data for specific
- model specifications.
- 5. Motor: Single 1/2 horsepower, maximum 1,750
- revolutions per minute, single-speed, with two-speed
- option.
- 6. Motor: Single 1 horsepower, maximum 1,750
- revolutions per minute, single-speed, with two-speed
- option.
- 7. Motor: Two 1/2 horsepower, maximum 1,750 revolutions
- per minute, single-speed, with two-speed option, both
- controlled by single switch.
- 8. Motor: Two 1 horsepower, maximum 1,750 revolutions
- per minute, single-speed, with two-speed option, both
- controlled by single switch.
- NOTE ** Retain one of the three following paragraphs if
- specifying unit with optional door-activated
- microswitch.
- 9. Door-Activated Microswitch: Supply microswitch for
- automatic on/off control, on when door is opened, off
- when door is closed; field installed.
- NOTE ** Delete one of the following two paragraphs.
- Plunger type is for doors with hinges (swing
- doors), roller type for all other types of doors.
- a. Type: Plunger.
- b. Type: Roller.
- NOTE ** Electric heated units can feature optional delay
- microswitches. Delay microswitches feature delay
- timers pre-mounted in the control panel. Delay
- microswitches keep the air curtain running for a
- specified period of time after the door is closed,
- preventing the electric coil from cooling down
- after the door closes, thereby providing the
- necessary heat on demand when the door is re-
- opened. They are best used when sporadic traffic
- flows through the door opening. Two types are
- offered; select from the following two paragraphs.
- 10. Fixed Delay Microswitch:
- NOTE ** Select one of the following paragraphs.
- a. Delay: 30 seconds, factory preset.
- b. Delay: 60 seconds, factory preset.
- c. Delay: 90 seconds, factory preset.
- d. Delay: 120 seconds, factory preset.
- e. Delay: 240 seconds, factory preset.
- f. Delay: 600 seconds, factory preset.
- NOTE ** Delete one of the following two paragraphs.
- Plunger type is for doors with hinges (swing
- doors), roller type for all other types of doors.
- g. Type: Plunger.
- h. Type: Roller.
- 11. Adjustable Time Delay Microswitch: Field adjustable
- to 17 minutes.
- NOTE ** Delete one of the following two paragraphs.
- Plunger type is for doors with hinges (swing
- doors), roller type for all other types of doors.
- a. Type: Plunger.
- b. Type: Roller.
- NOTE ** Insert information into following paragraph;
- consult manufacturer's product data for specific
- model specifications.
- 12. Operating Noise Level: __ decibels on A scale,
- measured from interior, 10 feet (3.048 m) from unit.
- NOTE ** Insert information into following paragraph;
- consult manufacturer's product data for specific
- model specifications.
- 13. Heater Assembly: Electric heater, ______ watts,
- ______ BTUs (______ J) per hour output, with
- temperature limit controller.
- 14. Thermostat: Wall-mounted, 24-Volt operation, with
- heater on/fan on and heater off/fan on selection.
- NOTE ** Insert information into following paragraph;
- consult manufacturer's product data for specific
- model specifications.
- 15. Utility Requirements: ___ Volts AC, ______-phase,
- ___ Ampere(s).
- NOTE ** Retain following paragraph if specifying Mars
- COMBI(R) units. These units are available only
- unheated. Otherwise, they can be used for the same
- purposes as the C, CH, and CHS models.
-
- E. Air Curtains:
- NOTE ** Insert Model Number information in following
- paragraph.
- 1. Acceptable Product: Mars Model Number ____ COMBI(R).
- 2. Product Description: Self-contained electrically-
- operated air curtain for mounting at head of openings
- up to 10 feet (3.048 m) high.
- 3. Housing:
- a. One piece molded white high-impact polyethylene
- material, resistant to high humidity and all
- climatic conditions.
- b. Internal steel bracket with sufficient strength
- to provide housing rigidity and fastening to
- wall.
- c. Mechanically field adjustable variable air intake
- louver assembly capable of reducing outlet air
- velocity up to 60 percent with louvers in totally
- enclosed position.
- d. Wedge shaped discharge air outlet nozzle
- containing adjustable air directional vanes with
- a +/- 20 degree sweep from front to back.
- NOTE ** Delete all but one of the following subparagraphs.
- White is standard; custom colors available.
- e. Color: White.
- f. Color: Gray.
- g. Color: Gold.
- h. Color: Beige.
- i. Color: Dark Bronze.
- j. Color: Custom color selected by Architect.
- NOTE ** Insert information into following paragraph;
- consult manufacturer's product data for specific
- model specifications.
- 4. Blower Assembly: Direct-drive, double-width and
- double-inlet squirrel cage steel blower wheels having
- capacity to provide ____ feet per minute (____ m/sec)
- air velocity and ____ cubic feet per minute (____
- L/sec) air volume at nozzle.
- NOTE ** Delete one of the following two paragraphs; consult
- manufacturer's product data for specific model
- specifications.
- 5. Motor: Single 1/2 horsepower, three-speed, with
- three-speed on/off control switch; single phase only.
- 6. Motor: Two 1/2 horsepower, three-speed, both
- controlled by single three-speed on/off control
- switch; single phase only.
- NOTE ** Retain following paragraph if specifying unit with
- optional door-activated microswitch.
- 7. Door-Activated Microswitch: Supply microswitch for
- automatic on/off control, on when door is opened, off
- when door is closed; field installed.
- NOTE ** Delete one of the following two paragraphs.
- Plunger type is for doors with hinges (swing
- doors), roller type for all other types of doors.
- a. Type: Plunger.
- b. Type: Roller.
- NOTE ** Insert information into following paragraph;
- consult manufacturer's product data for specific
- model specifications.
- 8. Operating Noise Level: __ decibels on A scale,
- measured from interior, 10 feet (3.048 m) from unit.
- NOTE ** Insert information into following paragraph;
- consult manufacturer's product data for specific
- model specifications.
- 9. Utility Requirements: ___ Volts AC, ______-phase,
- ___ Ampere(s).
- NOTE ** Retain following paragraph if specifying Mars Type
- NSF units, available unheated only. The NCH suffix
- models, for customer entrance doors, utilize one or
- two 1/2-horsepower motors, providing up to 3,400
- FPM (17 m/sec) air velocity at the nozzle and 600
- FPM (3 m/sec) measured 3 feet (0.914 m) off the
- floor. The NHV prefix models, for receiving doors,
- utilize one 1-horsepower motor, providing up to
- 4,600 FPM (23 m/sec) air velocity at the nozzle and
- 1,600 FPM (8 m/sec) measured 3 feet (0.914 m) off
- the floor.
-
- F. National Sanitation Foundation (NSF) Certified Air
- Curtains:
- NOTE ** Insert Model Number information in following
- paragraph.
- 1. Acceptable Product: Mars Model Number ____.
- 2. Product Description: Self-contained electrically-
- operated air curtain for mounting at head of openings
- up to 12 feet (3.658 m) high.
- 3. Housing:
- a. One piece molded white high-impact polyethylene
- material, resistant to high humidity and all
- climatic conditions.
- b. Internal steel bracket with sufficient strength
- to provide housing rigidity and fastening to
- wall.
- c. Washable aluminum mesh air intake filter.
- d. Wedge shaped discharge air outlet nozzle
- containing adjustable air directional vanes with
- a +/- 20 degree sweep from front to back.
- NOTE ** Delete all but one of the following subparagraphs.
- White is standard; custom colors available.
- e. Color: White.
- f. Color: Gray.
- g. Color: Gold.
- h. Color: Beige.
- i. Color: Dark Bronze.
- j. Color: Custom color selected by Architect.
- 4. Motors and Blower Wheels: Totally enclosed air over
- (TEAO) type motor(s), suitable for continuous heavy
- duty, all angle operation.
- NOTE ** Delete the following paragraph unless explosion
- proof motors are required.
- a. Explosion proof.
- b. Sealed lifetime pre-lubricated ball bearings,
- resilient mounted and protected by an automatic
- reset thermal overload switch.
- c. Quick disconnect plugs for fast easy removal of
- motor/fan assemblies for inspection and cleaning.
- NOTE ** Insert information into following paragraph;
- consult manufacturer's product data for specific
- model specifications.
- d. Double extended shaft and direct drive, double
- inlet, dynamically balanced forward curved
- squirrel cage blower wheels having capacity to
- provide ____ feet per minute (____ m/sec) air
- velocity and ____ cubic feet per minute (____
- L/sec) air volume at nozzle.
- NOTE ** Delete two of the following three paragraphs;
- consult manufacturer's product data for specific
- model specifications.
- e. Motor: Single 1/2 horsepower, maximum 1,750
- revolutions per minute, single-speed, with two-
- speed option.
- f. Motor: Single 1 horsepower, maximum 1,750
- revolutions per minute, single-speed, with two-
- speed option.
- g. Motor: Two 1/2 horsepower, maximum 1,750
- revolutions per minute, single-speed, with two-
- speed option, both controlled by single switch.
- NOTE ** Insert information into following paragraph;
- consult manufacturer's product data for specific
- model specifications.
- 5. Utility Requirements: ___ Volts AC, ______-phase,
- ___ Ampere(s).
- NOTE ** Delete one of the following two paragraphs.
- Junction box mounted on right side is standard;
- complete the second paragraph if an alternative
- mounting is required.
- 6. Electrical Wiring: Junction box mounted on right
- side.
- 7. Electrical Wiring: Junction box mounted ___________.
- NOTE ** Retain following paragraph if specifying unit with
- optional door-activated microswitch(s).
- 8. Door-Activated Microswitch(s): Supply 20 amp
- microswitch(s) for automatic on/off control, on when
- door is opened, off when door is closed; field
- installed.
- NOTE ** Delete one of the following two paragraphs.
- Plunger type is for doors with hinges (swing
- doors), roller type for all other types of doors.
- a. Type: Plunger.
- b. Type: Roller.
- NOTE ** Mars recommends the use of a motor control panel on
- three phase motors whenever a door microswitch is
- used to start and stop the air curtain. One door
- microswitch is used to directly control one or two
- 1/2 HP single phase motors without the need for a
- motor control panel. If a motor control panel is
- required, select one of the following two
- paragraphs and indicate the total number of motors
- (1, 2, 3, or 4) to be powered through the panel.
- 9. Wall Mounted Control Panel: Power ___ motors through
- the panel.
- 10. Factory Mounted Control Panel on Air Curtain: Power
- ___ motors through the panel.
- NOTE ** Insert information into following paragraph;
- consult manufacturer's product data for specific
- model specifications.
- 11. Operating Noise Level: __ decibels on A scale,
- measured from interior, 10 feet (3.048 m) from unit.
- NOTE ** Retain following paragraph if specifying Mars Super
- COMBI units. These units utilize 1 horsepower
- motors and provide up to 4,600 FPM (23 m/sec) at
- the nozzle. They are available unheated only and
- can be used for the same purposes as CHS models.
-
- G. Air Curtains:
- NOTE ** Insert Model Number information in following
- paragraph.
- 1. Acceptable Product: Mars Model Number ____ Super
- COMBI.
- 2. Product Description: Self-contained electrically-
- operated air curtain for mounting at head of openings
- up to 12 feet (3.658 m) high.
- 3. Housing:
- a. One piece molded white high-impact polyethylene
- material, resistant to high humidity and all
- climatic conditions.
- b. Internal steel bracket with sufficient strength
- to provide housing rigidity and fastening to
- wall.
- c. Mechanically field adjustable variable air intake
- louver assembly capable of reducing outlet air
- velocity up to 60 percent with louvers in totally
- enclosed position.
- d. Wedge shaped discharge air outlet nozzle
- containing adjustable air directional vanes with
- a +/- 20 degree sweep from front to back.
- NOTE ** Delete all but one of the following subparagraphs.
- White is standard; custom colors available.
- e. Color: White.
- f. Color: Gray.
- g. Color: Gold.
- h. Color: Beige.
- i. Color: Dark Bronze.
- j. Color: Custom color selected by Architect.
- NOTE ** Insert information into following paragraph;
- consult manufacturer's product data for specific
- model specifications.
- 4. Blower Assembly: Direct-drive, double-width and
- double-inlet squirrel cage steel blower wheels having
- capacity to provide ____ feet per minute (____ m/sec)
- air velocity and ____ cubic feet per minute (____
- L/sec) air volume at nozzle.
- NOTE ** Delete one of the following two paragraphs; consult
- manufacturer's product data for specific model
- specifications.
- 5. Motor: Single 1 horsepower, two-speed, with two-
- speed on/off control switch; single phase only.
- 6. Motor: Two 1 horsepower, two-speed, both controlled
- by single two-speed on/off control switch; single
- phase only.
- NOTE ** Retain following paragraph if specifying unit with
- optional door-activated microswitch.
- 7. Door-Activated Microswitch: Supply microswitch for
- automatic on/off control, on when door is opened, off
- when door is closed; field installed.
- NOTE ** Delete one of the following two paragraphs.
- Plunger type is for doors with hinges (swing
- doors), roller type for all other types of doors.
- a. Type: Plunger.
- b. Type: Roller.
- NOTE ** Insert information into following paragraph;
- consult manufacturer's product data for specific
- model specifications.
- 8. Operating Noise Level: __ decibels on A scale,
- measured from interior, 10 feet (3.048 m) from unit.
- NOTE ** Insert information into following paragraph;
- consult manufacturer's product data for specific
- model specifications.
- 9. Utility Requirements: ___ Volts AC, ______-phase,
- ___ Ampere(s).
- NOTE ** Retain following paragraph if specifying Mars
- HEPAC(R) unit Model HF40. HEPAC(R) air curtains
- contain a pre-filter and HEPA filter that is rated
- at 99.97 percent efficiency at removing airborne
- particle down to 0.3 microns, including dust,
- bacteria, molds, pollens, and tobacco smoke.
- NOTE **
- NOTE ** Mars HEPAC(R) units are supplied with electrical
- cord and standard wall outlet plug; they can also
- be used in portable bench top operations and are
- effective when placed adjacent to critical work
- areas.
- NOTE **
- NOTE ** To be mounted inside building only, their typical
- use is over an entrance to a cleanroom.
-
- H. High Efficiency Particulate Air Curtain (HEPAC(R)):
- 1. Acceptable Product: Mars Model Number HF40.
- 2. Product Description: Self-contained electrically-
- operated air curtain for mounting at head of openings
- up to 8 feet (2.438 m) high.
- 3. Housing:
- a. One piece molded white high-impact polyethylene
- material, resistant to high humidity and all
- climatic conditions.
- b. Internal steel bracket with sufficient strength
- to provide housing rigidity and fastening to
- wall.
- c. Mechanically field adjustable variable air intake
- louver assembly capable of reducing outlet air
- velocity up to 60 percent with louvers in totally
- enclosed position.
- d. Wedge shaped discharge air outlet nozzle
- containing adjustable air directional vanes with
- a +/- 20 degree sweep from front to back.
- NOTE ** Delete one of the following two paragraphs. White
- is production color; custom colors available.
- e. Color: White.
- f. Color: Custom color selected by Architect.
- 4. Blower Assembly: Direct-drive, double-width and
- double-inlet squirrel cage steel blower wheels having
- capacity to provide ____ feet per minute (____ m/sec)
- air velocity and ____ cubic feet per minute (____
- L/sec) air volume at nozzle.
- NOTE ** Insert information into following paragraph;
- consult manufacturer's product data for specific
- model specifications.
- 5. Utility Requirements: 1/2 horsepower motor, ___
- Volts AC, ______-phase, ___ Ampere(s).
-
- I. Fastening Devices: Types recommended in manufacturer's
- printed installation instructions for indicated
- substrates.
-
-
- PART 3 EXECUTION
-
- 3.1 EXAMINATION
-
- A. Verify that required utilities are in correct location
- and are of correct capacities for specified products.
-
- 3.2 INSTALLATION
-
- A. Install air curtains in accordance with shop drawings and
- manufacturer's printed installation instructions.
-
- B. Connection to utilities is specified in Sections of
- Division 16.
-
-
- END OF SECTION
-