Greenheck Project Profile

Parma 8200 by D’Amico

Minneapolis, MN

Engineering Firm

White Bear Lake, MN

Mechanical and Design Build Contractor

Legacy Co., Inc.
Bloomington, MN

Greenheck Representative

TMS Johnson
New Hope, MN

The kitchen features a free-standing, back-to-back cook line as well as a separate cook area with more than 50 feet of kitchen hoods.

The Challenge

Efficiently exhaust smoke and cooking odors to the outside rear of the building.
Obtain approvals regarding city building codes relating to grease removal in the ductwork.
Find an economical, low maintenance solution to this exhaust challenge.
Minimize the amount of grease entering the duct work to reduce duct cleaning maintenance costs.
Make the large supply air system installed on the side of the building aesthetically pleasing.

Parma 8200 is a very attractive and popular Italian restaurant in suburban Minneapolis, Minnesota, owned by Richard and Larry D’Amico, well known restaurateurs in the Minneapolis area. Parma 8200 opened in 2010 on the main level of a multistory office building that had been open for several years. The space occupied by Parma 8200 was not originally designed to exhaust smoke and grease through a traditional vertical ductwork system to the roof.

This presented a major ventilation exhaust challenge. The huge kitchen at the restaurant requires nearly 13,000 cfm of air exhange and contains free-standing, back-to-back cook lines as well as a separate cook area with more than 50 total feet of kitchen hoods. Exhaust air from the kitchen needed to travel horizontally approximately 100 feet to an outside wall at the rear of the building.

Parma 8200 is located on the main level of a multistory office building.

The Solution

(3) Greenheck Grease Grabber H2O Kitchen Ventilation Hoods (Model GGH20)
(1) Make-up Air Unit (Model DGX-118-H32) with cooling
(1) Greenheck Utility Centrifugal Fan (Model SWB-230-75)
(1) Exterior Louver Model ESD-403

Due to space limitations above the ceiling and no rooftop outlets, the horizontal ductwork required to exhaust air through the kitchen hoods could not be pitched steadily downward ¼” per foot to the outside rear wall of the building per the local codes. One proposed solution was to include duct sumps throughout the duct run. The addition of duct sumps included additional wiring and piping along the duct as well as drain concerns that had not been accounted for. Furthermore, city officials insisted that the grease sump area would have to be cleaned daily at great expense to the owner.

Screen Shot 2015-11-05 at 5.28.17 PMA second proposal was the addition of an electrostatic precipitator (ESP). Lack of space both inside the building and out helped to eliminate this option. Despite the unique duct sump design, the operating costs were too high. The acceptable solution was three Greenheck Grease Grabber H20 auto-cleaning kitchen hoods that handle both grease extraction and filter cleaning. The Grease Grabber H20 system incorporates Greenheck’s Grease Grabber dual-stage filtration system (tested to ASTM F2519-2005 and capable of removing 100% of the grease in the airstream five microns or larger) and a hot water/detergent spray system that automatically washes the filters as needed. The system purges and rinses with fresh hot water. This process eliminates the need to remove and clean filters by hand. A decorative Greenheck louver, Model ESD-403, was built to match the window mullions on the visible side of the building for the intake air provided to the make-up air unit installed above the collars inside the building.

The Results

Having seen the Greenheck Grease Grabber systems in action at another installation in the city, the building code officials agreed to provide a variance for the exhaust air system with the authority to require additional features to be added if upon inspection of the grease inspection sump area six months after the restaurant opened, there was no evidence of any grease in the ductwork.

“Thanks to the efficiency of the Grease Grabber H20 kitchen hood systems, the local mechanical inspector was so impressed after the six month inspection, he said he would never have to inspect the ductwork again,” said Clint Anderson,C.E.O./ project manager for Legacy Co., Inc., the design-build mechanical contractor. As for hiding the outside supply air equipment from view, Anderson was pleased with that as well. “People drive right by and don’t even notice the supply air unit on the side of the building,” he said.


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