  
The unit base is designed with cold rolled structural channel around the perimeter and along split sections. Additional channel support is provided under critical internal components such as fans and coils.
Standard Features Include:
- All welded members
- 24-inch maximum distance between internal members
- L/200 maximum deflection
- Lifting lugs along perimeter channel
- Perimeter base with epoxy primer and two-part polyurethane topcoat
 
The floor is constructed of minimum 16 gauge, bright galvanized sheet metal. All joins are standing seam construction eliminating any penetration through the floor skin. Standing seams are caulked and capped with a drive cleat for an airtight seal. The floor is insulated with 2-inch, 1-1/2 lb/ft3, NFPA-90 approved, fiberglass insulation.
The unit casing is a double-break, formed panel design providing rigidity while encapsulating the raw insulation edges. Panels are caulked and bolted together for an airtight seal. The bolted construction eliminates any penetration through the exterior casing. Panels can be disassembled and reassembled for servicing without loss of structural integrity. 
Standard Features Include:
- Minimum 16 gauge, paint grip, galvanized panels
- 2-inch, 1-1/2 lb/ft3, fiberglass insulation
- NFPA-90 approved
- 7.7 R-Value
- Reverse double-break panels are provided along the coil sections for easy unbolting during coil removal
- Unit leakage rate less than 1% of total CFM up to 1-1/2 times design static pressure
- Two-part polyurethane topcoat, minimum 1,000 hour salt spray (ASTM B117)
The roof is reinforced with reverse double-break flanges along the seams. The flanges are caulked and capped with a drive cleat to ensure an airtight, weatherproof seal.
Roof panels are bolted to the casing panels along the exterior edge eliminating any penetration through the exterior casing. Outdoor units have a 1/4-inch per foot slope for rain run-off.
Doors are double wall construction with heavy
duty, corrosion resistant latches and adjustable, painted zinc,
die cast hinges.  
Standard Features Include:
- Double wall construction
- 24 gauge, paint grip, galvanized, exterior skin
- 24 gauge, bright galvanized, interior skin
- 2 inch, 2.2 lb/ft3, polyurethane foam insulation
- NFPA-90 approved
- 13 R-Value
- Extruded aluminum frame
- Door can be opened from inside or outside the unit
- Available with in-swing or out-swing configuration to open against pressure
IAQ drain pans are double-sloped to prevent standing water.
Standard Features Include:
- Fully welded, 16 gauge, 304 stainless steel pan recessed into floor
- 2 inch, 1-1/2 lb/ft3, NFPA-90 approved, fiberglass insulation under the pan to prevent condensation.
- 20 gauge, bright galvanized exterior liner to protect insulation
- 1-1/4 inch MPT, 304 stainless steel, low-point drain connection piped to unit exterior
Plenum and centrifugal fans are AMCA certified for sound and air performance. Fans are statically and dynamically balanced. Prior to shipment, fans are run tested at the specified design rpm.
Standard Features Include:
- Forward curve, backward incline and airfoil steel wheels available in sizes ranging from 12" through 66" nominal diameter
- Fully welded, structural steel, fan frame
- L50-200,000 hr bearings
- Vibration isolation with free floating, 2-inch deflection springs and seismic restraints to meet Zone Four of Uniform Building Code
- Flexible duct connection between fan and pressure wall
- Drive belts and sheaves rated at 150% of motor horsepower
- Inverter duty motors on adjustable motor bases
- Flexible, water tight conduit when wiring is required
- Two-part polyurethane topcoat
- AMCA Class I, II, and III construction
- Arrangement 1, 3 or 4 plenum fans in horizontal or vertical configurations
- DWDI centrifugal fans available in tophorizontal, bottom-horizontal, up-blast or down-blast configurations
Water, steam, and DX coils are constructed with plate type fins and extruded fin collars. Seamless 5/8 inch copper tubes are mechanically expanded into the fins to ensure maximum thermal contact. Coil performance is certified in accordance with ARI Standard 410.
Standard Features Include:
- Aluminum and copper fins
- Heavy-wall copper headers and connections
- Numerous circuiting options to meet job requirements
- 304 stainless steel casing supplied with chilled water and DX coils
- Intermediate drain pan between stacked chilled water and DX coils
- Coils submerged in water and pressure tested at 500 psig
Unit Base
- Standard base is constructed of cold rolled structural perimeter channel.
- Base is also available in aluminum or stainless steel.
- For weight reduction, choose a formed sheet metal perimeter channel as an alternative to structural channel.
Cabinet
- Cabinets can be sized to meet space constraints.
- Cabinets can be built dual-tunnel, right angle, or stacked.
- Cabinets can be built with horizontal or vertical split sections.
- Cabinets are available as knockdown construction with casing and roof panels shipped loose for field assembly.
Casing, Liners & Floor
- Sheet metal panels are available in painted galvanized, bright galvanized, stainless steel, and aluminum with thickness as specified.
- Panels can be built with thermal break construction.
- Floors are available with aluminum or painted steel tread plate.
- Standard floors have standing seams. Both sheet metal and tread plate floors are available with solid welded seams.
Insulation
- A wide variety of insulation is available including Rockwool, FSK faced fiberglass, and Mylar faced fiberglass.
- Special acoustical constructions are available including deep treatment sheetrock/fiberglass.
Paint
- Standard paint is two-part polyurethane.
- Optional coatings are available up to 5,000 hour salt spray protection per ASTM B117.
- Choose a custom color as an alternative to our standard gray.
Fans
- Plenum, DWDI, axial and mixed flow fans are available to suite job requirements.
- Fans are available with a variety of options including but not limited to flow measurement,3" deflection springs, inertia base, and L10-200,000 hour bearings.
Coils
- Racks are available for independent removal of stack coils.
- Special corrosion resistant coatings are available.
Doors
- Doors are available in 2" or 4" thickness with stainless steel or aluminum outer and inner door skins.
- Additional options include view window, locking handle, and thermal break construction.
Filters
- Popular flat, bag, cartridge and HEPA filters are available in a range of efficiencies and sizes.
- Frames are available in face-load, side-access, or angle configuration in standard bright galvanized or stainless steel.
Dampers
- Dampers are a low leak design with airfoil blades, side seals and galvanized frames.
- Dampers are AMCA certified for pressure drop and leakage rate.
- Casing and linkage are available in stainless steel.
Louvers & Rain Hoods
- Louvers and rain hoods are constructed of 16 gauge, galvanized sheet metal protected with bird screen.
- Both are available in stainless steel.
Electrical
- Electrical options include variable frequency drives, bypass panels, and single point power panels. Panels are UL listed and NEMA rated.
- Other accessories include vapor proof lights, door interlocks, and GFCI outlets.
- ETL listing labels are available on most unit configurations.
Factory Installed Controls
- Customer supplied control systems can be factory mounted and integrated into the overall unit design.
Other components are available but not limited to:
- Electric, Duct and Indirect Fired Heaters
- Sound Traps
- Air Blenders
- UV Lights
- Heat Wheels
- Air-to-Air Heat Exchangers
- Heat Pipes
- Humidifiers
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Alliance Air Products has brought together an engineering team focused on practical solutions to all aspects of air handling unit design. Our engineers are leaders in the industry with extensive experience in research and product development.
The payoff to our customers is a streamlined design and manufacturing process resulting in efficient, cost effective, custom units.
Responsive & Knowledgeable
Our Team is dedicated to providing in-depth engineering solutions. By bringing our design team early in the planning phase,
we can tailor the unit capacity, layout, and cabinet size to precisely fit any new or retrofit project.
The team is committed to quick customer response with design options focused on high quality, efficiency and cost savings.
Our qualified engineers and designers can meet the most challenging building requirements including:
- Sound Attenuation
- Space Constraints
- Weight Constraints
- Corrosive Environments
 Accurate,
Consistent & Reliable as Specified
Alliance Air customers are assured quality and performance through our testing capabilities. Knowledgeable engineers have extensive hands-on experience in testing, research and product development. All tests are conducted in accordance with the latest industry standards using the most current software and instrumentation.
Customers are encouraged to witness any test performed. Through accurate measurements and consistent test data, we can assure that our customer’s units will provide quiet, efficient operation as specified.
Our test capabilities include:
- Sound Power
- Airflow
- Unit Leakage
- Casing Deflection
- Vibration
 Seamless
Coordination with the Customer
The Alliance Air team is set up to provide customer service during the unit’s long life. Technicians are available to assist on startup, training and field service. Customers can depend on the their prompt and reliable workmanship.
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