1. PRODUCT NAME
VIKING HORIZON
®
MIRAGE
®
EX-
TENDED COVERAGE CONCEALED
PENDENT SPRINKLERS
Model B-1 Standard Orifice Sprinkler
Base Part No. 08498
Available since 1993
Model B-2 Large Orifice Sprinklers
Base Part No. 10485
Available since 1998
Base Part No. 10680
Available since 1999
Cover Plate Assembly
Base Part No. 09804
Available since 1996
2. MANUFACTURER
THE VIKING CORPORATION
210 N. Industrial Park Road
Hastings, Michigan 49058 U.S.A.
Telephone:
(616) 945-9501
(877) 384-5464
Fax:
(616) 945-9599
e-mail: techsvcs@vikingcorp.com
3. PRODUCT DESCRIPTION
Viking Extended Coverage Horizon
®
Mi-
rage
®
Concealed Sprinklers are small,
solder link and lever spray sprinklers
designed for installation on concealed
pipe systems.
Equipped with a special deflector, the
sprinklers are designed to meet Light
Hazard density requirements for specific
extended areas of coverage when the
required minimum water supply is pro-
vided at the sprinkler.
After the sprinkler system has been
tested and the ceiling finish applied, the
sprinkler is hidden from view by a low
profile, small-diameter cover plate, in-
stalled flush to the ceiling. The cover
plate is available in several decorative
finishes to meet design requirements.
The "push on", "thread off" design al
lows for easy installation of the cover
plate, with up to 1/2" (12,7 mm) of
vertical adjustment. The "thread off" fea-
ture is designed to prevent unwanted
disengagement of the cover assembly.
The cover assembly can be removed
and reinstalled to permit temporary re-
moval of ceiling panels without taking
the sprinkler system out of service and
removing the sprinkler.
Inside the body of the sprinkler, the de-
flector and sealing assembly are held in
position by a heat-sensitive fusible link.
The sprinklers are listed as standard
response sprinklers when installed
according to the listed 20 ft. x 20 ft.
(6,1 m x 6,1 m) spacing. (Refer to the
approval chart on this page for other
listings.)
Listed for this spacing as Quick Resp. Ext. Coverage Sprin-
kler. See Quick Resp. Ext. Coverage Sprinkler page 58 a-d.
Listed for this spacing as Quick Response
Extended Coverage Sprinklers. See Quick Re-
sponse Extended Coverage Sprinkler page 58 a-d.
Sprinkler 87 a
Form No. F_061593
TECHNICAL DATA
HORIZON
®
MIRAGE
®
EXTENDED COVERAGE
20 ft x 20 ft (6,1 m x 6,1 m)
CONCEALED SPRINKLERS
Note: Units of measure in parentheses may be approximations.
Figure B
Figure A
Replaces page 87 a-d, dated August 4, 1998
(added new Model B-2 Part Number 10680).
February 11, 1999
Viking Horizon
®
Mirage
®
Extended Coverage
Concealed Sprinkler
Cover Plate Assembly: P/N 09804
1/2" NPT Sprinklers:
P/N 08498 (std. orifice)
P/N 10485 (large orifice)
3/4" NPT Sprinkler:
P/N 10680
(large orifice)
Sprinkler
Nominal
Highest Ambient
Required
Temperature
Temperature
Temperature Allowed
Cover Assembly
Classification
Rating
1
at Ceiling
2
Temperature Rating
Ordinary
165 °F (74 °C)
100 °F (38 °C)
165 °F (74 °C)
Areas of Coverage
Model B-1 Standard Orifice Horizon
®
Mirage
®
Extended Coverage Concealed Sprinkler
Sprinkler
NPT Max. Area
Nominal
Minimum
Approvals
4
Part
Thread
of Coverage
5
K-factor
6
Water Supply
Number
3
Size
L x W
Requirements UL
7
C-UL
7
NYC
8
08498
1/2" 16 ft. x 16 ft. 5.5
(15 mm)
4,9 m x 4,9 m
7,9
08498
1/2" 18 ft. x 18 ft.
5.5
(15 mm)
5,5 m x 5,5 m
7,9
08498
1/2" 20 ft. x 20 ft.
5.5
40 gpm @ 53.0 psi
Yes
Yes Yes
(15 mm)
6,1 m x 6,1 m
7,9 151,4 L/min @ 368 kPa
Footnotes
1
Temperature rating of Viking Horizon
®
Mirage
®
Concealed Sprinkler is stamped on the sprinkler body.
2
Based on NFPA-13. Other limits may apply depending on fire loading, sprinkler location, and other
requirements of the Authority Having Jurisdiction. Refer to specific installation standards.
3
Base part number shown. For complete part number, refer to Viking price list.
4
This chart shows listings and approvals available at time of printing. Other approvals are in process.
Check with the manufacturer for additional approvals.
5
For areas of coverage smaller than shown, use the "Minimum Water Supply Requirement" for the next
larger "Area of Coverage" listed for the sprinkler used. The distance from sprinklers to walls shall not
exceed one-half the sprinkler spacing indicated for the "Minimum Water Supply Requirement" used.
6
Metric K-factor shown is for use when pressure is measured in kPa. When pressure is measured in
BAR, multiply the metric K-factor shown by 10.0.
7
Listing is limited to Light Hazard Occupancies with smooth, flat, horizontal ceilings.
8
Accepted for use by City of New York Department of Buildings, MEA 89-92-Vol. IX.
Listed for this spacing as Quick Resp. Ext. Coverage Sprin-
kler. See Quick Resp. Ext. Coverage Sprinkler page 58 a-d.
Areas of Coverage
Model B-2 Large Orifice Horizon
®
Mirage
®
Extended Coverage Concealed Sprinklers
Sprinkler
NPT
Max. Area
Nominal
Minimum
Approvals
4
Part
Thread
of Coverage
5
K-factor
6
Water Supply
Numbers
3
Size
L x W
Requirements
UL
7
C-UL
7
--
10485 1/2" (15 mm)
16 ft. x 16 ft.
8.0
10680 3/4" (20 mm)
4,9 m x 4,9 m
11,5
10485 1/2" (15 mm)
18 ft. x 18 ft.
8.0
10680 3/4" (20 mm)
5,5 m x 5,5 m
11,5
10485
1/2" (15 mm)
20 ft. x 20 ft.
8.0
40 gpm @ 25.0 psi
Yes
Yes --
10680 3/4" (20 mm)
6,1 m x 6,1 m 11,5
151,4 L/min @ 174 kPa
Listed for this spacing as Quick Response
Extended Coverage Sprinklers. See Quick Re-
sponse Extended Coverage Sprinkler page 58 a-d.
For Light Hazard Occupancies only.
OBSOLETE
