User Guide

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Upblast Discharge - Arrangement UB

The Greenheck combination package

simplifies installation and reduces field labor

costs. The pre-engineered design ensures that

the supply fan, exhaust fan, curb, and

combination extension components interface

properly for kitchen ventilation applications.

Equally important, Greenheck combination

packages are specifically designed to comply

with NFPA 96.

NFPA 96 states:

• Exhaust duct must terminate at least 24

inches above the roof deck

• Fan discharge must be at least 40 inches

above the roof deck

• Air intake shall have a horizontal separation

of 10 feet from the exhaust discharge

Note: Consult local codes and the authority

having jurisdiction if there are questions

concerning the use of this product.

Model DGX (Housing 12, 22, & 32 only) is available with a pre-engineered thru-wall installation option, which is

ideal when a roof penetration is not desirable.

Factory options that facilitate easy installation

and ensure problem-free operation:

Weatherhood: A full down turn design with

generous intake area to minimize intake velocity

and moisture entrainment.

Thru-Wall Sleeve: Sleeve provides attachment

interface between weatherhood and burner

section. Accommodates walls up to 15 inches in

depth.

Filter Section: Aluminum mesh media filters

outdoor air and strips fine mist from the air. A

drain pan weeps moisture out the front of the

wall sleeve.

Roof Mounted Installation

Thru-Wall Installation

INSTALLATION OPTIONS

Model DGX is available for stand alone installations as shown below. Downblast (Arrangement DB), upblast

(Arrangement UB), or horizontal (Arrangement HZ) discharge may be specified.

Horizontal Discharge - Arrangement HZ

Combination Package - Arrangement DBC

The combination curb extension

is the component that pulls the

Combination Package together,

providing a factory engineered

interface between the roof curb

and the fans. It is also designed

to satisfy NFPA 96 requirements

- above the roof line - for

kitchen hood exhaust.