Greenheck Fan 470656 manual Apply Sealant, Install Exhaust Fan, Install Exhaust Options

Installation of Roof Mounted Unit Arrangement DBC, continued

4. Apply Sealant

Apply an appropriate sealant around the perimeter of the curb and duct adapter(s) to isolate fan vibration and prevent water penetration.

Exhaust Duct Installed

Sealant

Supply Duct with

Duct Adapter Installed

Sealing Ductwork

5. Install Exhaust Fan

Fasten exhaust fan to curb extension with self-tapping sheet metal screws.

Exhaust Fan

Installing Exhaust Fan

Note

Installing the exhaust fan prior to the supply unit will allow for easier installation of options.

6. Install Exhaust Options

Install optional hinge kit with restraining cables and grease trap with drain connection.

Note

NFPA 96 requires that the exhaust fan be hinged.

6Model IG / IGX Make-Up Air

7. Install Supply Unit

Use a crane and a set of spreader bars hooked to the factory lifting lugs to lift and center the unit on the extension/equipment support(s).

Use self-tapping sheet metal screws to fasten the unit to the extension/equipment support(s).

Installing Supply Unit

Note

The use of all lifting lugs and a set of spreader bars is mandatory when lifting unit.

Note

Be sure to complete the outdoor venting installation instructions.

Note

Some units come with the weatherhood attached and step 8 may not apply.

8. Assemble and Attach Weatherhood

The weatherhood can now be assembled and/or attached to the unit. Detailed assembly instructions can be found with the weatherhood. If the optional evaporative cooling module was selected, this step does not apply, refer to the Installation Instructions for the Optional Evaporative Cooling Module section, page 7.

9. Seal Weatherhood Seam

Using an appropriate sealant, seal the seam between the weatherhood and the unit.

Complete Combination Installation

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