Gx2-Uv" Series Principle Of Operation - GAYLORD Ultima Vent GX2-UV Technical Manual

FIRE PROTECTION
NFPA-96 requires the use of Surface Fire Protection (Duct,
Plenum, Surface/Appliance) on all hoods. It is these systems
that are the first line of defense against equipment fires.
The "GX2-UV-FDD" Series ventilator incorporates a fuse link
damper at the duct collar. In the event of a fire, should the
fuse link at the duct collar reach 280°F, the fuse link melts
allowing the damper to close. (See Fig. 3) After the fire is
extinguished the fuse link(s) in the duct collar needs to be
replaced and the damper reset.
The "GX2-UV-EDD" Series ventilator incorporates an Electric
Damper at the Duct collar and thermostat(s), which are
located at the point where the ductwork joins the ventilator.

"GX2-UV" SERIES PRINCIPLE OF OPERATION

FIG. 3
When the temperature of the conveying airstream, which
must pass over the thermostat(s), reaches 250°F, the
Electric Damper at the Duct collar closes and the Exhaust
and Supply fans and UV Lamps shut off, when the ventilator
and fans are wired according to Gaylord's wiring diagram.
After the thermostat(s) cool below 250°F the damper will
reset automatically, and the Exhaust and Supply fans will
restart, if the CUV-100 control is turned "ON".
The "GX2-UV-ND" Series ventilator does NOT have a damper.
The damper in the "GX2-UV-FDD" and the "GX2-UV-EDD"
prevent the flames from entering the ductwork and spread-
ing to other parts of the building. The fire is contained in the
kitchen area where it can be properly fought.
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