32
Range with Obstruction
Coverage for range w/obstruction is 18" wide by 26" long (deep) per nozzle. The R nozzle must be
positioned at the left and/or right edge and centered on the depth of the protected area. One R nozzle can
provide protection for ranges 18 inches wide by 26 inches deep. Additional nozzle(s) must be used for
ranges exceeding 18” in width, provided no single nozzle coverage exceeds 18” max-width. Refer to
Figure 32 for an example of modular coverage using two nozzles.
All dimensions fixed unless otherwise noted (e.g., min/max).
NOTE: Appliance Drop Fittings Must Not be Sealed with Pipe Dope or Teflon Tape.
Figure 32 - Range with Obstruction
Notes:
When protecting ranges in accordance with these low proximity recommendations, the following minimum
pipe requirements must be met to prevent splash:
• Minimum of 16’ of pipe, 1 tee & 4 elbows prior to the first R nozzle protecting a low-proximity range.
• Minimum 6.5’ of pipe after the tee.
• Minimum of 6 flows in the system.
1. R Nozzle
2. Shelf/obstruction that extends more than 11”
from the rear edge of the cooking hazard to
the front edge of shelf/obstruction.
3. 45° Elbow
4. Top of Cooking Surface
Centered Along
Hazard Zone Edge
18” Min
18”
18”
26” Max
per
Nozzle
18” Max
per Nozzle
1
2
4
4
1
3
1
3
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