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Chapter 2 - Principle of Operation, Page 2-6__________________________________________________
Optional Continuous Cold Water Mist
Overview
Some ventilators may be equipped with optional continuous cold water mist. NFPA-96 requires that all
hoods used over solid fuel burning appliances be equipped with a “spark arrester” to knock down any
embers, created by the burning of solid fuel, to reduce the possibility of embers or sparks being drawn
up into the exhaust duct and fan where it could ignite collected grease. Continuous cold water mist is
one of the acceptable spark arresters.
Continuous cold water mist ventilators incorporate a water manifold with spray nozzles, located at
the lower edge of the air inlet slot (Refer to Figure 2-6-1). The Wash Control Cabinet contains a Cold
Water Mist loop that contains a pressure regulator and pressure gauge (Refer to Figure 2-7-1). The
regulator is adjusted for a flow pressure of 40 PSI. When the exhaust fan is started, the solenoid
valve in the cold water loop in the Wash Control Cabinet opens (Refer to Figure 2-7-1), turning on the
mist nozzles which remain on as long as the exhaust fan is on. The nozzles produce a very fine mist and
are located so that the entire air stream passes through the mist.
Figure 2-6-1
Optional Cold Water Mist
Cold Water Mist Nozzles
Содержание CG3-UVi-SPC Series
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Страница 136: ...Figure 8 1 1 Typical UVi and SPC Internal Wiring ...
Страница 157: ...Form TM CG3 UVi SPC Rev 04 0516 20934 Copyright 2016 Litho in USA ...