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Gas Train and Controls| maximum gas train capacity | 400, 000 Btu/hr |
|---|---|
| gas train ignition system | direct spark ignition |
| safety shutoff valve control signal | 120 VAC |
Fan Specifications| fan type | centrifugal |
|---|---|
| fan inlet type | double width, double inlet |
| fan bearing life | 100, 000 hours |
Cooling Coil| coil type | direct expansion or chilled water |
|---|---|
| coil fin density | 12 fpi or less |
| drain pan extension | 12 inches |
Evaporative Cooling Section| evaporative cooling media depth | 12 inches |
|---|---|
| evaporative cooling media fire rating | UL 900 class II |
| wind load resistance | 25 PSF |
Highlights G90 galvanized steel construction and lifting lugs for robust durability.
Details high-quality burners, electronic modulation, and flame safeguard for efficient heating.
Outlines standard control components like voltage, motor starter, and disconnect switch.
Explains neoprene or spring isolators for minimizing noise transmission into the building.
Discusses fan wheel construction, balancing, and performance ratings from a test chamber.
Notes large panels for easy inspection and maintenance of internal components.
Confirms units are tested prior to shipment for proper operation of all systems.
Tracks make-up air volume with exhaust for energy savings.
Details four methods for controlling make-up air volume by varying fan speed.
Maintains pressure drop across the burner as air volumes change for proper combustion.
Allows recirculation of space air with outdoor air for heating needs.
Lists four methods for controlling recirculated air to outdoor air ratio via dampers.
Covers three options for heat control: Discharge, Space, and DDC Interface.
Controls gas valve based on fan discharge sensor for desired temperature.
Uses a thermostat to maintain desired room set point via discharge temperature.
Allows external signal for modulating burner output to satisfy monitored conditions.
Details stand-alone installation options for downblast, upblast, or horizontal discharge.
Simplifies installation and reduces labor costs for kitchen ventilation applications.
Describes an option ideal when roof penetration is not desirable for specific housing sizes.
Offers various remote control panels with combinations of switches, thermostats, and indicators.
Permatector™ coating and decorative paints available for durability and aesthetics.
Factory-provided roof curbs ensure compatibility with the make-up air unit and roof curb.
Allows for easy alignment of the supply duct connection with factory supplied roof curbs.
Available with washable aluminum mesh or 2-inch 30% efficient disposable filters.
Options include standard, filtered, and louvered intake hoods with birdscreen or mesh filters.
Intake or discharge dampers prevent backdrafts when the supply fan is not in operation.
One inch fiberglass insulation lines the housing to prevent condensation and provide acoustical barrier.
Features an interior metal liner to isolate fiberglass insulation from the airstream.
Spring blower vibration isolators are an alternative to neoprene isolators.
Factory mounted starters allow electrical interlock between supply and exhaust fans.
Monitors filter pressure drop and indicates when cleaning or replacement is needed.
Automatically shuts down the supply fan when discharge temperature drops below a set point.
Turns heating on/off based on the outdoor air temperature for efficiency.
Available as 3-way for horizontal or 4-way for downblast discharge.
External 115 volt GFCI outlet for service personnel convenience.
Provide normally open/closed contacts for supply fan status and interlocks.
Specifies make-up air unit manufactured by Greenheck, meeting ETL and CSA standards.
Details direct gas-fired system with adjustable burners, ignition, fault indicator, and Maxitrol control.
Describes internal frame construction of G90 galvanized steel with standing seams for weather protection.
Specifies 1-inch fiberglass insulation meeting NFPA 90A and UL 181 erosion requirements.
Covers double width, double inlet centrifugal fans mounted on a common base with lubricated bearings.
Details energy-efficient motors, permanently lubricated, and drives sized for 150% of driven horsepower.
Outlines prewired components, UL listing, NEC compliance, motor starters, and overload protection.
Designed for velocities under 550 fpm, using 2-inch washable aluminum mesh or disposable filters.
Specifies G90 galvanized steel construction with birdscreen mounted at the intake.
Recirculation airflow controlled by return damper position, not permitted across the burner.
Volume varied by 2-speed motor or VFD; includes self-adjusting burner bypass damper.
DX or chilled water coils with copper tubes, aluminum fins, and sloped drain pans.
Includes galvanized steel housing, mesh filters, and a stainless steel evaporative cooling module.
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