Greenheck Fan Series L manual Severe Duty Option, Severe Duty Installation

Severe Duty Option

SEVERE DUTY - Specifically designed for applications with extremely high structural design load requirements. The severe duty models LDP and LBP are far superior to any centrifugal roof exhaust fan currently in the market. Designed with structural steel supports and ESD-603D louver blades, the severe duty louver enclosure (SDLE) may be used in any application which requires a fan to endure high winds with the potential of wind blown debris. The louvered housing has been tested in accordance with the following Miami-Dade test protocols:

•Large Missile Impact Test - TAS-201-94

•Uniform Static Air Pressure - TAS-202-94

•Uniform Cyclic Wind Loading - TAS-203-94

To meet the above protocols, the severe duty fan must be mounted on a severe duty roof curb, which is attached directly to the building

structure. Maximum design load is 140 psf.

Available on sizes

•LDP - 60 though 120

•LBP - 10 through 30

NOTICE OF ACCEPTANCE NUMBER 03-0422.05

Weights and dimensions will vary from standard LDP and LBP construction.

Severe Duty Installation

Models LDP and LBP severe duty exhaust fans are designed to meet the needs of general clean air applications. Tests have been conducted to ensure safe, rugged and reliable fans capable of withstanding severe exhaust conditions.

The severe duty roof curb model SD is supplied with this product and is designed with 12 gauge welded steel construction. Greenheck recommends the severe duty curb to be anchored to the structure of the building. Dependent upon roofing material it shall be bolted and welded. For recommended duct size, refer to CAPS or installation manual.

Installation must include a means for inspecting, cleaning, and servicing the exhaust fan.

Due to the varying airstreams encountered in commercial ventilation, system designers must be aware of national, state, and local codes and guidelines governing these installations. Local code authorities should be consulted before proceeding with any ventilation project.

							3/4 INCH (19 MM)
1 3/4 INCH (44 MM)				THROAT DIMENSION		1 3/4 INCH (44 MM)
				(ROOF OPENING)
			OUTSIDE CURB DIMENSION
12, 18 OR 24 INCHES		1 INCH (25 MM) INSULATION
(305, 457, 610 MM)
	4 IN.			ROOF OPENING		4 IN.
	(102 MM)
					(102 MM)

CORRUGATED

ROOF DECK

CONCRETE

ROOF TRUSS RECOMMENDED

DUCT & DAMPER SIZE

	1 1/4 INCH (32 MM)
	2 1/2 INCH (64 MM)	1 3/4 INCH	2 1/2 INCH (64 MM)
4 INCH
	6 INCH x 3 INCH	(44 MM)	4 INCH
(102 MM)
	(152 MM x 76 MM)
			(102 MM)
	STEEL MOUNTING ANGLE
	(12 GAUGE MINIMUM)

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