Aiming The Nozzles; Operation; Unit Pre-Suppression Functions - Accurex XRRS Installation, Operation And Maintenance Manual

Aiming the Nozzles

NOTE
Aiming of the hood nozzles is typically performed by
factory authorized fire equipment distributer during
startup. Do not adjust after startup and arming has
been performed.
1. Using a 1 inch box end wrench and crescent wrench,
loosen the locking nut on the adjustable ball fitting on
both nozzles.
2. Adjust the nozzle so they are angled at a point
halfway between the center of the front and back
burners.
3. After nozzles are correctly aimed, re-tighten the
locking nut on both nozzles.
4. Recheck nozzles are aimed correctly.
NOZZLE
AIMING POINT
(LEFT)
--
45° TOTAL
INCLUDED ANGLE
OF ADJUSTMENT
IN ANY DIRECTION

Operation

Before operating the system, system must be armed
per the instructions on page 16.

Unit Pre-Suppression Functions

The XRRS functions as a standard ventilation range
hood with the added capability to suppress stove top
fires.
Designed to use over a standard 30 and 36-inch
domestic range, the system relies on input from a
combination of sensors to control the fan and shutoff
power to the stove when the temperature reaches
preset points.
The fans and lights can be turned on and off using the
user interface. The range can also be unlocked via the
user interface. A password may be required to unlock
(turn on) the range and the range may be automatically
locked again after a time limit (default 2 hours) if the
hood system was configured for NFPA 101 compliance.
NOZZLE
If the temperature reaches the cooking detection
AIMING POINT
(RIGHT) temperature setpoint (default 115°F), the hood turns
the fan on (if not already on) and the fan speed control
buttons are disabled. The speed of the fan is no longer
controlled via the user, instead the fan is controlled via
the hood temperature.
If the temperature continues to climb, upon the
temperature reaching the high temperature setpoint
(default 180°F), the hood will immediately lock (shut off)
the range. An alarm will appear on the user interface
warning the user of the high temperature. The dry fire/
fault contacts at this point will switch state.
If the temperature continues to climb, upon reaching
approximately 216°F, the fire suppression system
will discharge, dispersing wet chemical on top of the
appliance and suppress the fire below.
NOTE
Fire Ready Hood 15