|
|
|
|
|
|
R-102™
Fire Suppression Systems
Frequently
Asked Questions (FAQs)
|
- How
are tilt skillets and tilt braising pans
protected?
- At
what point does an existing dry chemical
or wet chemical system need to be upgraded
to a UL 300 wet chemical system?
- Can
carbon dioxide cartridges be used instead
of nitrogen in pre-UL 300, R-102™ systems?
- Can
the Hose/Grommet Pkg. (Part No. 418511)
be used to connect to an add-on tank with
painted bracket? Also, do you have to
manifold two tanks together to use the
Hose/Grommet Pkg.?
- How
are industrial fryers (potato chip, corn
chip, pork rind, etc.) or large donut
fryers protected?
-
How are ranges protected when a shelf
or salamander broiler is installed above
the back of the range?
- How are
tilt skillets and tilt braising pans protected?
Currently, there is no UL test for tilt
skillets and braising pans. However,
UL
has stated that because these appliances
can be used for frying, they must be
protected
as fryers. Multiple nozzle protection
for fryers is limited by UL to fry vats
not exceeding 6 sq. ft. (864 sq. in.).
This limitation does not apply when
multiple
nozzle protection is used for tilt skillets
and braising pans. Also, because tilt
skillets/braising pans do not have insulated
sides to the cooking pan, the maximum
dimensions (area and longest side) for
fryers with drip boards, can be used.
- At
what point does an existing dry chemical
or wet chemical system need to be upgraded
to a UL 300 wet chemical system?
UL
300 changes affect only pre-engineered
restaurant fire suppression systems manufactured
after November 20, 1994. All existing
R-102 installed systems are "grandfathered"
and remain listed using the UL guidelines
in effect at the time of manufacture
(R-101 Dry Chemical System service and
replacement components are no longer
available. Consequently, this system
is no longer listed, according to Underwriter’s
Laboratories (UL)).
To ensure the best
fire protection available in applications
where vegetable oil is used in depths
greater than 1/4", a UL 300, R-102,
or PIRANHA wet chemical fire suppression
system
should
be used.
- Can carbon
dioxide cartridges be used instead of
nitrogen in pre-UL 300, R-102™ systems?
No. Even though the system may operate
satisfactorily, pre-UL 300 R-102 systems
still require the use of nitrogen cartridges
to comply with their listings.
- Can the
Hose/Grommet Pkg. (Part No. 418511) be
used to connect to an add-on tank with
painted bracket? Also, do you have to
manifold two tanks together to use the
Hose/Grommet Pkg.?
The Hose/Grommet Pkg. can be used with
the add-on tank in the stainless steel
enclosure, or an add-on tank in
a painted bracket (if acceptable to the
Authority Having Jurisdiction). The Hose/Grommet
Pkg. can be utilized either with manifolded
agent discharge piping or when two tanks
are piped separately.
- How are
industrial fryers (potato chip, corn chip,
pork rind, etc.) or large donut fryers
protected?
UL will not allow multiple nozzle protection
for fryers that exceed 6 sq. ft. (864
sq. in.)* unless the fire suppression
system manufacturer obtains a listing
for the protection of the specific appliance
brand and model number of the fryer (i.e.,
Krispy Kreme Fryers – Models 150
D/H, 270 D/H, 600 D/H, and 1000 D/H).
As an alternative, an engineered carbon
dioxide system may be used when designed
in accordance with NFPA 12. Under certain
conditions, a PIRANHA wet chemical system
may be used. Contact Ansul Technical
Services for assistance.)
*NOTE: This limitation does not apply
when multiple nozzle protection is used
for tilt skillets and braising pans. (See
question number one.)
- How are
ranges protected when a shelf or salamander
broiler is installed above the back of
the range?
UL has designed a test for ranges that
have shelves installed. Shelves and salamander
broilers can obstruct the discharge pattern
of a nozzle when it is installed over
the center of the range. Therefore, a
low proximity nozzle(s) must be used under
a salamander or shelf. Or, a specifically
listed nozzle designed to protect a range
when a shelf is present must be used.
|
| |
|
|
|
|
|
