AAF International SAH - Manual (Page 6)

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moving and lifting individual components, screwing components
together, and caulking. The SAH weights and dimensions can be
found on the product submittal drawings. The gas-phase chemical
filters will typically have a maximum weight of approximately 40
pounds (20kg). Particulate filters will typically weigh less than the
gas-phase filters.
Completion of the following preparations and provision of the following
items will be the responsibility of the installer or others:
– Site preparation
– Connecting screws and hardware for attaching inlet and outlet ducts
– Provisions for anchoring and supporting the Side Access Housing,
including anchor bolts, angles, straps, hangers and cradles, etc.
– Caulk, as required
– Inlet and outlet ducts, or other sheet metal parts, as required
These items will not be supplied by AAF, unless noted specifically in
the AAF quotation and in the accepted customer purchase order.
NO WELDING WILL BE REQUIRED.
In general, assembly of the filter system will consist of the following:
– Preparation of the installation location
– Transportation of all components to the installation location
– Unpacking the Side Access Housing
– Installing the Side Access Housing
– Installing inlet and outlet ducts
– Unpacking and preparation of the gas-phase chemical filter cassettes
– Installing gas-phase chemical filter cassettes
– Unpacking particulate filters
– Installing particulate filters
– Cleaning the site
– Start-up and commissioning of the filter system
1.7 Related System Equipment: Ventilation systems will often
include other equipment including but not limited to:
– Fan(s), if not supplied as part of the SAH
– Dampers
– Weather louvers
– Air tempering equipment
– Analog instrumentation
– Electronic instrumentation and controls
Neither the interface of these items with the filter system supplied by
AAF, nor the installation, operation, and maintenance of these items is
covered in this manual. Whether these items are supplied by AAF or
by others, consult the documentation specific to these products for
appropriate instructions.
2.0 Principles of Operation
An understanding of the design and operating principles of the Side Access
Housing with Gas-phase Chemical Filters is useful for effective installation,
operation, and maintenance. The system is intended to remove gaseous
contaminants from intake, re-circulated, or discharged ventilation air.
Examples of such contaminants may be nuisance odors and smells that
may cause domestic and neighborhood discomfort and reduce workplace
productivity, or harmful gases that may cause damage to health, plant and
product in industrial applications. The heart of the system is the AAF SAAF
Cassette. This is a high impact plastic frame that supports various types of
dry, granular, chemical media between perforated screens that allow air to
move through the filter. The SAAF Cassette is designed to support the
chemical media in a V-bank configuration of media beds that maximizes
the media exposed to the airstream, reduces the airstream velocity
through the media bed, maximizes energy efficiency, and maximizes the
removal of contaminants and the life of the product. The method of
contaminant removal is through a combination of the physical property of
adsorption and the chemical process of oxidation. AAF offers a variety of
impregnated and un-impregnated dry granular media to handle a wide range
of contamination problems. For more information on AAF’s gas-phase air
cleaning products contact your AAF representative.
The AAF Side Access Housing is one of the various framing and support
systems designed to support the SAAF Cassette in the air stream and to
allow easy installation, operation and maintenance of the system.
3.0 Installation Instructions
Consult the product drawing(s) submitted on this order before proceeding.
3.1 Space Requirements: A minimum of 36"clear space must be
available at the access side of the Side Access Housing to perform routine
maintenance and it is recommended that 24" clear space be available at
the opposite side for access during installation. Additional space may be
required for inlet and outlet ductwork. On large Side Access Housings,
greater than 4' wide, access doors may be supplied on both sides. In this
case 36"clear space must be provided on both sides for access.
3.2 Foundations, Supports, and Anchoring: The foundation and/or
supports must be designed to be adequate to support the filter system
operating weight, and any seismic, live or other loads (if any), with a
sufficient factor of safety as determined to comply with the
requirements of all applicable governing codes, standards, and laws.
Ensure that the foundation or support surface is level and smooth
before proceeding. The filter system is designed for operation in indoor
or, with appropriate modifications to resist weather, outdoor locations.
The equipment is not specifically designed to resist and operate under
unusual dynamic loading situations such as high winds or earthquake
conditions. If the equipment is required to function in such
circumstances special precautions may be required to ensure that the
equipment will remain intact, anchored, and functioning. If this situation
applies consult with a qualified professional engineer before installing
the equipment.