Greenheck Fan Vektor-HS manual Duct Installation, Stack Extensions, System Assembly

Duct Installation

Bottom Inlet Duct Connection

The end of the duct (customer-supplied) is secured between the roof curb’s top edge and the curb cap of either the Vektor-H or bypass air plenum. If an isolation damper is present in the roof curb, the duct is located between the roof curb and the damper adapter tray.

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Vektor-H or Vektor-HS

Duct Roof Curb

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Vektor-H

Adapter Tray

Isolation Damper

Duct

Duct Connection to Curb

Side or End Duct Connection

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NOTE

Plenum is provided with removable side or end panels, allowing the proper duct connection.

Duct flange and gasketing by

others

Bypass Air

Plenum

Roof Curb

Duct to Bypass Air Plenum

Stack Extensions

Systems with multiple stack extensions require all sections assembled and installed on site between the main fan body and the discharge cone. Each section has guy wire attachment brackets located on the upper end of each section. The order sections are installed in are universal. Gasketing (3/16 x 1/2 inch with sticky back) is provided and is to be installed between each joining section.

Guy wires are required on system with multiple stack extensions. Location of connections, wiring and anchorage is determined by a structural engineer.

System Assembly

NOTE

When installing each section, be certain to rig each section separately using the lifting lugs provided.

Gasket		Bolt and Washer
			Detail
Gasket
	5/16 inch self-tapping screws
	Gasket

5/16 inch self-tapping screws

Gasket

1.Mount roof curb to roof deck in accordance with local codes.

2.Install 3/16-inch thick x 1/2-inch wide, closed-cell gasket on the top edge of the curb, adhesive side down (gasket provided). Leave no gaps between gasket sections to ensure tight seal.

3.Place the bypass air plenum (BAP) onto the previously installed gasket and secured roof curb. If a BAP is not provided for the unit, skip to Step 5. Pre-drill pilot holes into the roof curb and attach the BAP to the roof curb with mounting hardware (by others).

4.Install 3/16-inch thick x 1/2-inch wide, closed-cell gasket on the top edge of BAP, adhesive side down (gasket provided). Leave no gaps between gasket sections to ensure a tight seal.

5.Place the curb cap of the fan housing onto the gasket and BAP or onto roof curb if BAP is not provided. Attach the curb cap using the provided 5/16-inch self-tapping screws. If a BAP is not provided, pilot holes must be drilled into the roof curb.

6.Install the final nozzle subassemblies as shown in the submittal drawing. Align flange bolt holes and fasten sections using the 316 stainless steel bolts, washers, and lock washers provided.

7.Follow electrical connection and pre-start-up checks as listed on pages 7 and 8.

Laboratory Exhaust System 5

®