Unit installation

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Spring Air System Enviro Engineering Manual 01/0316
16
Sample Selection
A hospital cafeteria is expanding the kitchen. An additional SPRING AIR SYSTEMS water wash
hood model HF-B 10.4 is to be installed. The cafeteria is located on the first floor of a four-(4)
story section of the hospital. The exhaust must discharge at the ground floor level into a
courtyard. A SPRING AIR SYSTEMS kitchen enviro system (KES) is required.
Water wash hood: CD-B 10/4
Length: 10 ft.
Width: 4 ft.
Exhaust volume: 3,000 CFM
External Static Pressure: 1.26” W.C.
Ductwork:
Twenty (20) equivalent feet from hood to KES unit.
Eighty (80) equivalent feet from KES unit to exterior wall.
Discharge cowl and birdscreen on exterior wall.
Calculations:
A. Total External Static Pressure
Hood = 1.26” W.C.
Ductwork:
(20 + 80) x 0.15” W.C. / 100 ft = 0.15” W.C.
Discharge cowl = 0.34” W.C.
Total External Static = 1.75” W.C.
B. Refer to KES FAN CHART at 3000 CFM and 1.75” W.C. Select KES30 with 4.66 HP, and
2766 rpm. The SPRING AIR SYSTEMS Model KES30-30-IH KES unit, indoor design, horizontal
arrangement, with 5.0 HP motor. This unit is a combination of a KES30-30-ISH Filter box and a
KESF30-30-IH fan unit.
Engineering Data
Project Name: - Sample
Item Number: - H-1
Model Number: -CD-B-10/4
Number of Sections: - 1
Hood Length: - 10'0"
Hood Width: - 48"
Lights: - 1 fluorescent
Hot Water Flow (40 psi): - 9.9 USGPM
Exhaust Specifications
Exhaust Volume: - 3000 cfm
No. of Duct Collars: - 1
Size of Duct Collar: - 10" X 27.0"
Static Pressure: - 1.26" W.C.
Cold Water Specifications
Cold Water Flow (20 psi): - 0.35 USGPM
Sample Hood Selection Printout from Spring Air Program
Chart No. 3