• L-shaped, U-shaped, stacked design;
• Aluminum, galvanized or stainless steel construction;
• Centrifugal, plenum, or axial flow/mixed flow fans;
• Multiple fan arrays;
• Multiple coil configuration options:split, stacked, staggered;
• Specialized construction & performance features to accommodate:
  • Extremes of temperature and condensation
  • Sound reduction
  • High filtration
  • Energy recovery

Design

General Construction

• 2", 3" or 4" double wall panels.
• Injected foam or fiberglass insulation.
• Galvanized steel, aluminum or stainless steel casings and floors.
• Welded structural aluminum or steel channel bases.
• 3/16" welded floors in painted steel, galvanized, aluminum or stainless steel; treadplate optional.
• IAQ triple-sloped, 12 gauge, stainless steel drain pans in cooling coil sections for complete condensate removal.
• Access doors for inspection, service and maintenance designed to open opposite the unit operating pressure.
• 1/2% to 1% leakage rate.

Fan Section

• Direct- or belt-drive fans.
• Single or multiple direct-drive plenum fans.
• Fan belt-driven fans, fan, motor and drive are mounted on a welded, heavy-duty steel vibration base with spring-isolators properly selected for the specified vibration efficiency. Inertia bases are available for critical applications.
• Complete fan assembly is factory run, tested and dynamically balanced.
• Centrifugal fans (DWDI) for maximum efficiency in return and supply fan applications.
• Plenum fans for applications with multiple discharges.
• Axial fans for reduced sound levels in the low-octave bands.
• Direct-drive available to meet critical balance criteria, and to eliminate the possibility of belt dust (as well as the necessity of belt maintenance).
• Multiple direct-drive plenum fan arrays for "N+1" capability.
• Full height, full width diffuser plate in centrifugal fan, blow through applications reduces pressure drop by 50% or more when compared to conventional diffusers.
• Monorails for fan and/or motor removal.

Coil Section

• Staggered or split-fit coils for limited coil pull areas.
• Chilled water and glycol cooling coils; hot water and glycol, and steam heating coils.
• IAQ triple-sloped, 12-gauge stainless steel drain pans in cooling 
coil sections.
• Support racks for independent coil removal available in stainless, galvanized or painted steel.
• Intermediate drain pans, troughs and downspouts for stacked coils.
• Steam coils raised for proper condensate removal.

Filter Section

• Flat and angle configurations.
• Upstream and side service options.
• ASHRAE rated, Carbon and HEPA filters

Dampers

• Opposed blade for maximum control.
• Parallel blade for mixing.

Louvers

• Drainable
• Acoustic
• Hurricane

Blenders

Sound Attenuators

• Inlet, outlet and fan mounted.
• Sized to provide good airflow, minimum pressure drop, and to meet noise criteria.
• Fiberglass filled, mylar lined, or packless
• Elbow discharge type available to meet size constraints.

 

Electrical Controls/Components

• Marine, fluorescent or LED lights, switches and receptacles.
• Single-point wiring.
• Starters, disconnects, variable-frequency drives.
• Mount customer supplied controls to maintain unit integrity.

Thermal Break Construction

Service Corridors/Vestibules

• Side and center available on outdoor units.
• Optional unit heaters and piping supports