19
Appliance Protection
The TANK Fire Suppression system utilizes both overlapping and dedicated nozzle appliance coverage,
depending on the type of cooking appliance(s) requiring protection. The Hazard Zone consists of the cook-
ing surface of each appliance underneath each hood. For dedicated and overlapping nozzle information,
refer to “Nozzles” on page 8.
Overlapping appliance coverage allows a given area under the hood, defined as the hazard zone, to be
protected by overlapping nozzles. Nozzles are evenly spaced at the same height and alignment (front-to-
back) relative to the hazard zone.
Dedicated appliance protection utilizes a nozzle, or nozzles, for protection of an individual appliance.
Overlapping, dedicated appliance, plenum, and duct protection may be incorporated in a single pipe
network on the TANK Fire Suppression extinguishing system, as long as the number of nozzles per tank
does not exceed five.
The following sections detail the different nozzle coverage and placement parameters for overlapping and
dedicated nozzle appliance protection methodologies. Double row coverage is allowed for TANK.
Overlapping Appliance Protection
A single hazard zone utilizing overlapping coverage is 30” deep, by the total length of the hazard zone for
the protected appliances. The cooking surface of all appliances protected by overlapping nozzles must be
located within the defined hazard zone area. Cooking appliances eligible for overlapping protection are
outlined in Table 3 on page 20. The lowest and highest cooking surface will determine the height of the
fire suppression nozzles. All overlapping nozzles must be mounted at the same height in a single hazard
zone.
For applications where overlapping protection cannot be used, such as an upright boiler, dedicated appli-
ance protection must be used.
Figure 22 - Overlapping Protection Option
15”
12” Max 12” Max
15”
Cooking
Appliances
Cooking
Appliances
35” Min
50” Max
35” Min
50” Max
36”
Max
36”
Max
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