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Sprinkler 87 b
During fire conditions, when the tem-
perature around the sprinkler ap-
proaches it's operating temperature, the
cover plate detaches. Continued heat-
ing of the exposed sprinkler causes the
fusible link to disengage, releasing the
deflector and sealing assembly. Water
flowing through the sprinkler orifice
strikes the deflector, forming a uniform
spray pattern to extinguish or control the
fire.
4. TECHNICAL DATA
Refer to table 1 previous page for ap-
provals.
Rated to 175 PSI (1 207 kPa) water
working pressure
Factory tested pneumatically to 95 PSI
(655 kPa)
Spring: U.S.A. Patent No. 4,570,720.
Thread Size:
P/N 08498: 1/2" (15 mm) NPT
P/N 10485: 3/4" (20 mm) NPT
Orifice Size:
P/N 08498: Nominal 1/2" (15 mm)
P/N 10485: Nominal 17/32" (20 mm)
K Factor:
P/N 08498: 5.5 ( 7,9 Metric*)
P/N 10485: 8.0 (11,5 Metric*)
*Metric K Factor shown is for use when pres-
sure is measured on kPa. When pressure is
measured in BAR, multiply the metric K Fac-
tory shown by 10.0
Minimum operating pressure: 7 PSI
(48,3 kPa)
Maximum distance from sprinklers to
walls: One half the allowable sprin-
kler spacing indicated in the Approval
Chart for the "Maximum Area of Cov-
erage Length X Width" used.
Available Cover Plate Adjustment:
1/2" (12,7 mm) (+/- 1/4" [6,4 mm])
Sprinkler Materials:
Body: Brass Casting UNS-C84400
Body Cap: Brass UNS-C26000
Deflector: Copper UNS-C19500
Deflector Pins: Stainless Steel UNS-
S30300
Lever Bar: Copper Alloy UNS-C72500
Compression Screw: Brass UNS-
C36000
Fusible Link Assembly*: Nickel Alloy
and Eutectic Solder
*
Fusible links of Viking Extended Coverage Hori-
®
®
zon
Mirage
Concealed Sprinklers are marked
with a yellow Stripe or Dot for identification pur-
poses.
Fusible Link Levers: Stainless Steel
UNS-S31600
®
Seal: Teflon
Tape
Spring: Nickel Alloy
Cover Plate Assembly Materials:
Cover Plate Assembly: Brass
UNS-C26000
Spring: Nickel Alloy
Solder: Eutectic
TECHNICAL DATA
Cover Finishes:
Bright Brass
Polished Chrome
1
Painted
White (No. 1004)
1
Painted
Ivory (No. 1634)
1
Painted
Black (No. 1007)
1
Painted finish consists of Polyester Baked
.
Enamel
2
®
Sherwin-Williams
Color Answers™ Interior
Color Number. Other Colors available on re-
®
quest. See Sherwin-Williams
Interior Color Selection color numbers.
Ordering Instructions:
To order the Viking Extended Coverage
®
®
Horizon
Mirage
Concealed Sprinkler
and Cover Plate Assembly, refer to:
Model B-1 Standard Orifice
Sprinkler Base Part No. 08498 and
Model B-2 Large Orifice
Sprinkler Base Part No. 10485
Cover Plate Assembly
Base Part No. 09804.
Specify sprinkler temperature rating and
finish and temperature rating of
Cover
Plate Assembly.
Accessories:
Concealed Sprinkler Wrenches*
Heavy Duty
PN 08336W/B
Manufactured since 1983
Light Duty**
P/N 10366W/B
*
A 1/2" ratchet is required (not available from Vi-
king).
** Ideal for Sprinkler Cabinets.
5. AVAILABILITY AND SERVICE
Viking sprinklers are available through a
network of Domestic, Canadian, and In-
ternational Distributors. See the Yellow
Pages of the telephone directory for your
nearest distributor (listed under "Sprin-
klers Automatic Fire") or contact The
Viking Corporation.
Viking Technical Data may be found on
The Viking Corporation's Web site at :
http://www.vikingcorp.com
The Web site may include a more recent
edition of this Technical Data page.
6. GUARANTEES
For details of warranty, refer to Viking's
current price schedule or contact Viking
directly.
7. INSTALLATION
WARNING: Viking sprinklers are manu-
factured and tested to meet the rigid
requirements of the approving agency.
The sprinklers are designed to be in-
stalled in accordance with recognized
installation standards. Deviation from
the standards or any alteration to the
sprinkler or cover plate assembly after it
HORIZON
EXTENDED COVERAGE
20 Ft X 20 Ft (6.1 M X 6.1 M)
CONCEALED SPRINKLER
2
Extended
2
Coverage
Concealed
2
Sprinkler
Color Answers™
Protective Cap
Concealed
Sprinkler
wrench**
Part No.
08336W/B
(shown) or
Part No.
10366W/B
**
A 1/2" ratchet
is required.
(Not available
through Viking).
leaves the factory including, but not lim-
ited to, painting, plating, coating or modi-
fication, may render the sprinkler inop-
erative and will automatically nullify the
approval and any guarantee made by
The Viking Corporation.
A. Sprinklers must be installed in accord-
ance with recognized standards in
the country of installation. Regard-
less of the standard used, the instal-
lation must be acceptable to all
Authorities Having Jurisdiction.
B. Sprinklers must be handled with care.
Horizon
klers are protected with a plastic pro-
tective shell, which should remain in
place over the sprinkler body during
installation, testing, and any time the
sprinkler is handled or shipped. The
plastic protective shell must be re-
moved prior to placing the system in
service. See paragraph "I" below.
Prior to installation, sprinklers must
be stored in a cool, dry place in their
original shipping container. Never in-
s ta ll sp ri nk le rs th at ha ve be en
dropped, damaged in any way, or
have been exposed to temperatures
in excess of maximum ambient tem-
perature allowed. Such sprinklers
should be destroyed immediately.
C. Extended Coverage Horizon
®
rage
April 13, 1998
®
®
MIRAGE
Figure C
®
®
Mirage
Concealed Sprin-
®
Concealed Sprinklers must be
Mi-
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