Viking Microfast M-6 User manual

1. PRODUCT NAME
VIKING Microfast® Model M-6
Low-Flow Residential Pendent
Sprinkler
Sprinkler Base Part No. 10149
Manufactured 1997-
2. MANUFACTURER
THE VIKING CORPORATION
210 N. Industrial Park Road
Hastings, Michigan 49058 USA
Telephone: [phone]
[phone]
Fax No: [phone]
From outside U.S.A.
Telephone: [phone]
Fax: [phone]
3. PRODUCT DESCRIPTION
The Viking Microfast® Model M-6, Low-
Flow Residential Pendent Sprinkler, isa
small, high sensitivity, glass-bulb resi-
dential spray sprinkler. The sprinkler is
available in several finishes, with tem-
perature ratings to meet varying design
requirements. Theorificedesign, with a
K Factor of 3.1, allows efficient use of
available water supplies for the hydrau-
lically designed fire protection system.
The small rugged 3mm glass bulb, and
special deflector combine speed of op-
eration and area of coverage to meet
residential sprinkler standards, while
providing a pleasing aesthetic appear-
ance. The sprinkler is listed for use be-
low smooth, flat horizontalceilings only.
During fireconditions, the heat sensitive
liquid intheglassbulbexpands,causing
theglasstoshatter,releasingthepipcap
andsealingspringassembly. Thewater
flowing through the sprinkler orifice
strikes the sprinkler deflector forming a
uniform spray pattern to extinguish or
control the fire.
4. TECHNICAL DATA
See chart (Page 150 c) for approvals.
See chart for minimum water supply re-
quirements and maximum areas of
coverage.
Glass Bulb Fluid Temperature rated to -
650F (-550C)
Rated to 175 PSI (1 207 kPa) water
working pressure
Factorytestedhydrostaticallyto500PSI
(3 448 kPa)
Spring: USA Patent No. 4,167,974
Bulb: USA Patent No. 4,796,710
Testing: USA Patent No. 4,831,870
Thread Size: 1/2" (15 mm) NPT
Orifice Size: Nominal 3/8"
K Factor: 3.1 (4,5 Metric*)
*See footnote 8 on Approval Chart
(Page 150 c)
SPRINKLER MATERIALS:
Frame: Brass Castings
UNS-C84400
Deflector: Copper UNS-C19500
Bulb: Glass
Nominal 3 mm diameter
Seal: Teflon®Tape
Spring: Nickel Alloy
Screw: Brass UNS-C36000
Pip Cap: Copper UNS-C14500
ACCESSORIES:
Sprinkler Wrench
Standard: P/N 05000CM
Recessed: P/N 07398W
Referto"SPRINKLERACCESSORIES"
for escutcheons.
5. AVAILABILITY AND SERVICE
Viking Sprinklers are available through
a network of Domestic, Canadian, and
International Distributors. See the Yel-
low Pages of the telephone directory
(listed under "Sprinklers Automatic
Fire") or writeto TheVikingCorporation,
Hastings, Michigan USA Attention:
Sales Department.
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 approving agencies.
The sprinklers are designed to be in-
stalled in accordance with recognized
installation standards. Deviation from
the standards or any alteration to the
sprinkler after it leaves the factory in-
cluding, but not limited to, painting, plat-
ing,coating,ormodification,mayrender
the sprinkler inoperative and will auto-
matically nullify the approval and any
guaranteemadebyTheVikingCorpora-
tion.
A. Sprinklers are to be installed in ac-
cordance with the latest published
standardsoftheNationalFireProtec-
tion Association, Factory Mutual,
LossPreventionCouncil,Assemblee
Pleniere, Verband der Sachver-
sicherer or other similar organiza-
tions,andalsowithprovisionsof gov-
ernmental codes, ordinances, and
standards whenever applicable. For
conditionsnotspecificallycoveredby
the Standards, refer to the "Viking
Residential Installation Guide". Fi-
nal approval and acceptance of all
Residential Sprinkler Installations
mustbe obtained from the Author-
ity Having Jurisdiction. Residen-
tial sprinklers are special service
sprinklersforuseinoneandtwofam-
ilydwellings,mobilehomes,andresi-
dential portions of other occupancies
where allowed. The use of Residen-
tial Pendent sprinklers may be lim-
ited due to occupancy and hazard.
The minimumflowrate indicatedfora
listed area of coverage must be pro-
vided at the sprinkler, therefore, the
system must be hydraulically calcu-
lated. Refer to the Authority Having
Jurisdiction prior to installation.
B. Sprinklers must be handled withcare.
They must be stored in a cool, dry
place in their original container.
Never install sprinklers that have
been dropped or damaged in any
way. Never install any glass bulb
sprinkler if the bulb is cracked or if
there is a loss of liquid fromthe bulb.
Never install sprinklers which have
been exposed to temperaturesin ex-
cess of maximum ambient tempera-
ture allowed. Such sprinklers should
be destroyed immediately.
C. Corrosion resistant sprinklers must
beinstalledwhensubjecttocorrosive
atmospheres. Viking Microfast®
Residential Pendent Sprinklers are
not intended for use in corrosive en-
vironments.
D. Use care when locating sprinklers
near fixtures that can generate heat.
Do not install sprinklers where they
will be exposed to temperatures that
exceed the maximum recommended
Sprinkler 150 aAugust 29, 1997
Form No. 082197 New Page issued August 29, 1997
Units of measure in parentheses may be approximations.
TECHNICAL DATA Microfast® MODEL M-6
LOW-FLOW RESIDENTIAL
PENDENT SPRINKLER
OBSOLETE

ambient temperature for the tem-
perature rating used.
E. Sprinklers must be protected from
mechanical damage. Adequate heat
mustbeprovidedwhensprinklersare
installed on wet pipe systems.
F. The Microfast®Model M-6 Residen-
tial Pendent Sprinkler must be in-
stalled after the piping is in place to
prevent mechanical damage, and
only in the pendent position. Before
installing, make sure the appropriate
model, style, orifice size, and tem-
peratureratingisused. Applyasmall
amount of pipe joint compound or
tape to the male threads only, taking
care not to allow a build up of com-
pound inside the orifice. Install the
sprinkler onthe piping using the spe-
cial sprinkler wrench only, while tak-
ing care not to damage the sprinkler
operating parts. DO NOT use the
sprinkler deflector to start or thread
the sprinkler into a fitting.
G. After installation the entire sprinkler
systemmustbetestedinaccordance
with the recognized installation
standards. The test is applied after
sprinkler installation to insure no
damagehasoccurredtothesprinkler
during shipment and installation, and
to make sure the unit has beenprop-
erly tightened. If a threadleak should
occur, normally the unit must be re-
moved, new pipe joint compound or
tape applied, and reinstalled. This is
duetothefactthatwhenthejointseal
leaks, the sealing compound is
washed out of the joint.
8. MAINTENANCE
NOTICE: The owner is responsible for
maintaining the fire protection system
and devices in proper operating condi-
tion. For minimum maintenance and in-
spection requirements, refer to the Na-
tional Fire Protection Association Pam-
phlet that describes care and mainte-
nance of sprinkler systems. In addition,
the "Authority Having Jurisdiction" may
have additional maintenance, testing,
andinspectionrequirementswhichmust
be followed.
A. The sprinklers must be inspected on
a regular basis for signs of corrosion,
mechanical damage, obstructions,
paint, etc. The frequency of the in-
spections may vary due to corrosive
atmospheres,water supplies and ac-
tivity around the device.
B. Sprinklers that have been field
painted, caulked, or mechanically
damaged must be replaced immedi-
ately. Sprinklers showing signs of
corrosion shall be tested and/or re-
placed immediately as required. Mi-
crofast® Residential sprinklers that
are 20 years old shall be tested
and/or replaced immediately as re-
quired. Never attemptto repair or re-
assemble a sprinkler. Sprinklers that
have operated cannot be reassem-
bledorreused,butmustbereplaced.
When replacing sprinklers, use only
newsprinklerswithidenticalperform-
ance characteristics.
C. The sprinkler discharge pattern is
critical for proper fire protection.
Nothing should be hung from, at-
tached to, or otherwise obstruct
the discharge pattern of the sprin-
kler. All obstructions must be imme-
diately removed or, if necessary, ad-
ditional sprinklers installed.
D. When replacing existing sprinklers,
the system must be removed from
service. Refertotheappropriatesys-
tem description and/or valve instruc-
tions. Prior to removing the system
from service, notify all Authorities
Having Jurisdiction. Consideration
should be given to employment of a
fire patrol in the effected area.
1. Remove the system from service,
draining all water and relieving all
pressure on the piping.
2.Usingthespecialsprinklerwrench,
remove the old sprinkler and in-
stall the new unit. Care must be
taken to replace the sprinkler with
the proper model, style, orifice
size, and temperature rating. A
fully stocked sprinkler cabinet
should be provided for this pur-
pose.
3. Place the system back in service
and secure all valves. Check and
repair all leaks.
E. Sprinkler systems that have been
subjectedtoafiremustbereturnedto
service as soon as possible. The en-
tire system must be inspected for
damage and repaired or replaced as
necessary.Sprinklersthathavebeen
exposed to corrosive products of
combustionorhighambienttempera-
tures, but have not operated, should
be replaced. Refer to the Authority
Having Jurisdiction for minimum re-
placement requirements.
New Page issued August 29, 1997
August 29, 1997
Sprinkler 150 b
TECHNICAL DATA
Form No. 082197
Microfast® MODEL M-6
LOW-FLOW RESIDENTIAL
PENDENT SPRINKLER
OBSOLETE

New Page issued August 29, 1997
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Sprinkler 150 c
August 29, 1997
Form No. 082197
Units of measure in parentheses may be approximations.
TECHNICAL DATA
APPROVED
ESCUTCHEONS
X- Standard (surface)
and E-1 Adjustable
APPROVED
FINISHES
1- Brass, Bright Brass,Chrome,
White (Paint), Navajo White (Paint)
APPROVED
TEMPERATURES
A- 155oF (68oC) and 175oF (79oC).
Sprinkler Nominal Sprinkler Ceiling Temperature at Sprinkler
Temperature Temperature Rating Maximum Ambient Maximum Recommended Bulb
Classification (Fusing Point) Temp. Allowed1Ambient Temp.2 Color
Ordinary 155oF (68oC) 135oF (46oC) 100oF (38oC) Red
Intermediate 175oF (79oC) 155oF (68oC) 150oF (65oC) Yellow
Sprinkler Finishes: Brass, Bright Brass, Polished Chrome, White (Paint) and Navajo White (Paint).
1Based on National Fire Prevention and Control Administration Contract No. 7-34860.
2Based on NFPA-13. Other limits may apply depending on fire loading, sprinkler location and other Authority Having Jurisdiction requirements. Refer to
specific installation standards.
Deflector Thread Nominal Nominal Overall
Style Size NPT Orifice K Factor 8 Length Base Part Number 3
Pendent 1/2 inch 3/8 inch 3.1 US 2.25 inch
(15 mm) (4,5 metric) (57,2 mm) 10149
FOOTNOTES
3Base part number shown. For complete part number, see price list.
4This chart shows the listings and approvals available at the time of printing. Other approvals are in process. Check with manufacturer for any additional
approvals.
5Listing is for Residential occupancies with smooth, flat, horizontal ceilings. See Footnotes 6, and 7.
6For areas of coverage smaller than shown, use the "Minimum Water Supply Requirement" for the next largest area listed. Flows and pressures listed are
per sprinkler.
7Listed by Underwriters Laboratories Inc. for use in Canada.
8Metric 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.
KEY
AREA OF COVERAGE 4Temperature
Finish
A1X Escutcheon
Smooth, Flat Horizontal Ceilings
Maximum Area Minimum Water Supply Requirements Approvals
of Coverage 6
One Sprinkler Two or Three UL5C-UL7FM NYC
Width Length
12 ft. x 12 ft. 9.0 GPM @ 8.4 PSI 8.5 GPM @ 7.5 PSI
3,7 m x 3,7 m 34,1 L/Min @ 57,4 kPa 32,2 L/Min @ 51,2 kPa
14 ft. x 14 ft. 10.0 GPM @ 10.4 PSI 8.5 GPM @ 7.5 PSI
4,3 m x 4,3 m 37,9 L/Min @ 70,9 kPa 32,2 L/Min @ 51,2 kPa
16 ft. x 16 ft. 11.0 GPM @ 12.6 PSI 9.5 GPM @ 9.4 PSI
4,9 m x 4,9 m 41,6 L/Min @ 85,5 kPa 36,0 L/Min @ 64,0 kPa
18 ft. x 18 ft. 13.0 GPM @ 17.6 PSI 11.0 GPM @ 12.6 PSI
5,5 m x 5,5 m 49,2 L/Min @ 119,5 kPa 41,6 L/Min @ 85,5 kPa
20 ft. x 20 ft. 14.0 GPM @ 20.4 PSI 14.0 GPM @ 20.4 PSI
6,1 m x 6,1 m 53,0 L/Min @ 138,7 kPa 53,0 L/Min @ 138,7 kPa
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Microfast® MODEL M-6
LOW-FLOW RESIDENTIAL
PENDENT SPRINKLER
OBSOLETE

Form No. 082197
OBSOLETE