December 2008
Section 3
ZD Design
Page 3 – 45
Amerex Restaurant Fire Suppression System (EX 4658)
ZONE OF PROTECTION – CON’T.
The “Zone of Protection” requires that the nozzles be placed at 46 to 51 inches above the top surface of the
appliance, all ZD nozzles are to be placed at the same elevation and the nozzles are to be aimed straight
down. No additional aiming is required because the eligible appliances are protected no matter where they
are located within the “Zone of Protection”. Therefore,
the spray is not to be impeded in any manner
.
When an appliance such as an upright broiler or salamander is part of the cooking appliance lineup, a
dedicated appliance nozzle must be used to protect it. The ZD nozzles cannot protect cooking appliances with
an enclosed cooking area such as an upright broiler or salamander.
No ZD nozzles are required above the
upright broiler protected by a dedicated nozzle, however the ZD nozzle located to the right and left of
the appliance must be no more than 6 inches from the edge of the appliance.
The illustration below
reflects the situation described above. The location of the upright broiler is now fixed and the appliance must
remain in this location.
Dedicated appliance protection of salamanders, cheese melters, chain broiler or a range with a back-shelf is
always in
addition
to the zone defense nozzles located overhead.
DEDICATED APPLIANCE
NOZZLE PROTECTION
46”- 51”
46”- 51”
20” MAX.
6” MAX.
TOP OF APPLIANCE
TOP OF APPLIANCE
ZD Nozzles
PN14178 (2xR)
2
6” MAX.
6” MAX.
