CaptiveAire EWC Installation, Operation And Maintenance Manual page 24

Group Protection Example 1 – Appliance line separated by unprotected space.
End nozzles must be located 12" or less (horizontally) from the end of the hazard zone. Overlapping
nozzles must be spaced no further than the maximum allowed interval 24" on center.
Overlapping Hazard Zone
12"
Max
A
B
A. Zone 1 Overlapping Nozzle Spacing
B. Zone 1 Overlapping Nozzle Height
NOTE: Overlapping (TF1) nozzle spacing and height requirements are based on the appliances
protected for each individual zone, A TF1 nozzle must always be located at the start and end of
each zone, no more than 12" from the end of the hazard zone (edge of 1st/last cooking appliance
surface). Refer to "Overlapping Appliance Protection" on page 21.
Figure 24 - Example 1
12"
Max
A
ZONE 1
12"
Max
C
C. Zone 2 Overlapping Nozzle Spacing
D. Zone 2 Overlapping Nozzle Height
24
12"
Max
C
ZONE 2
D