MPS Master
SECTION 23 40 00
HVAC AIR CLEANING DEVICES
PART 1 - GENERAL
1.01 SUMMARY
A.Section Includes:
1.Furnish and install filters for all air handling equipment as scheduled on the Drawings.
2.All air handling equipment shall contain a filter system consisting of 2inch thick, minimum 25to 30percent Dust Spot Efficiency (MERV 8) efficient throwaway prefilter and 12inch thick, minimum 60to 65percent Dust Spot Efficiency (MERV11) efficient final filter.
3.All filter shall be either standard size 24”x24” or 24”x12”
4.Furnish and install Dwyer, Magnehelic Series 2000 or owner approved filter gauge for each filter system. Draft shall be reported in inches and each gauge shall have a shut off valve.
- Pre-filter gauge shall be Model 2001-AF with a range of 0-1.0” W.C. and 0.02” increments.
- Final filter gauge shall be Model 2003-AF with a range of 0-3.0” W.C. and 0.10” increments.
- The filter bank shall be constructed to provide a sufficient air gap between filter banks for individual air pressure drop reporting.
- Outdoor units shall provide gauge protection to prevent sun fading of gauge. These gauges shall also be rated for outdoor (low temperature/wet) environments.
1.02 SUBMITTALS
A.General: Provide submittals in accordance with Section 013300.
B.Product Data: Product brochure and data, including dimensions, weights, required clearances, flow capacity including initial (clean) and final (dirty) pressure drop at rated air flow, efficiency and test method, and fire classification.
1.03 QUALITY ASSURANCE
A.General:
1.Select filter media that is UL listed, Class1 or Class2, as approved by governing authorities.
2.Base filter performance data in accordance with ASHRAE 5276, Test Method Using Atmospheric Dust.
PART 2 - PRODUCTS
2.01 MANUFACTURERS
A.Acceptable Manufacturers: Subject to compliance with requirements of the Contract Documents, acceptable manufacturers are as follows:
1.Filters: Airguard, American Air Filter, Continental, Farr
2.Filter Housings: Airguard, American Air Filter, Continental, Farr
3.Filter Gauges: Dwyer or Owner approved equal
2.02 PLEATED PRE-FILTERS
A.General: Factory fabricated, 2inch thick pleated filters, having an arrestance value of 90to 92percent average. Provide filters with initial resistance of no greater than 0.30inch water column at 500 feet per minute velocity and final resistance of not greater than 0.90inch water column.
1.Example: Fare 30/30 or Equal (35 Percent Efficient)
2.03 FINAL FILTERS
A.General: Provide 12inch thick cartridge filters, pleated with metal contour stabilizers, diagonal support bracing welded wire support grid in galvanized steel enclosure frame, in sizes indicated or required by air handling manufacturer. Filters to carry a related face velocity of 500 feet per minute with initial (clean) resistance of not greater than 0.030w.g. (inches of water column) and a final resistance of 1.5w.g. (inches of water column) and average arrestance of 97percent.
1.Example: Farr RigaFlo (65Percent Efficient)
2.04 FILTER HOUSINGS
A.General: Provide manufactured and/or fabricated filter housing of 16gauge galvanized steel with support angles located 24inches on center. Weld, clean, and paint all joints.
B.Filter Channels: Provide 1piece, filter channels of 16gauge galvanized steel for both prefilter and final filter. Provide an air gap between pre-filter and final filter racks to allow for proper pressure drop readings.
C.Gasketing: Provide continuous gasketing in final filter channel to prevent air leakage around final filter when in place.
D.Access Doors: Provide access doors with lever handles each side of housing for filter replacement. Gasket doors and install additional gasket on inside of door to seal between door and filter.
23 40 00 - 1
HVAC Air Cleaning Devices
MPS Master
SECTION 23 40 00
PART 3 - EXECUTION
3.01 INSTALLATION
A.General:
1.Install air filters and holding devices of types indicated and where shown following air filter manufacturer’s written instructions and with recognized industry practices to ensure that filters meet requirements and serve intended purposes.
2.Locate each filter unit accurately in position indicated in relation to other work. Position unit with clearance for normal service and maintenance.
a.If unit will be used for temporary heating or ventilation, filter media shall be installed over all return duct openings. Contractor shall replace loaded filter media as necessary during the construction project. At completion of project, contractor shall remove filter media.
3.Install filters in position to prevent passage of unfiltered air, and provide felt, rubber, or neoprene gaskets where necessary.
4.Install a filter gauge for each filter bank.
a.Install filter gauge static pressure tips upstream and downstream of filters to indicate air pressure drop through filter. Install filter tip in center of filter bank. Mount filter gauges on outside of filter housing or filter plenum in an accessible position. Do not interfere with cabinet access doors. Adjust and level inclined gauges.
5.Do not operate any fan system connected to filter banks until all filters (temporary or permanent are in place). Provide clean filters in all air handling equipment immediately before balancing the systems. When balancing is completed, replace all filters just prior to turning the Project over to the Owner.
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HVAC Air Cleaning Devices
MPS Master
SECTION 23 40 00
END OF SECTION
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HVAC Air Cleaning Devices