Viking MICROFAST M Instruction manual

1. PRODUCT NAME
Viking Microfast®Model M
Residential Horizontal Sidewall
Sprinkler Base Part No. 06769B
2. MANUFACTURER
The Viking Corporation
210 N. Industrial Park Road
Hastings, Michigan 49058, USA
Telephone: [phone]
[phone]
Fax: [phone]
e-mail: [e-mail]
3. PRODUCT DESCRIPTION
The VikingMicrofast®Model M Residen-
tial Horizontal Sidewall Sprinkler is a
small, high-sensitivity, glass-bulb spray
sprinkler. The sprinkler is available in
several finishes, with temperature rat-
ings to meet design requirements. The
orifice design, with a K-factor of 5.5,
allows efficient use of available water
supplies for the hydraulically designed
fire-protection system.
The small, rugged 3 mm glass bulb and
special deflector combine speed of op-
eration and area of coverage to meet
residential sprinkler standards while be-
ing aesthetically pleasing. During fire
conditions, the heat-sensitive liquid in
the glass bulb expands, causing the
glass to shatter, releasing the pip cap
and sealing spring assembly. The water
flowing through the sprinkler orifice
strikes the sprinkler deflector, forming a
uniform spray pattern to extinguish or
control the fire.
4. TECHNICAL DATA
See approval chart on page 142 c for
approvals.
See chart for minimum water supply re-
quirements and maximum areas of
coverage.
Glass-bulb fluid temperature rated to
-65 °F (-55 °C).
Ratedto175psi(1207kPa)waterwork-
ing pressure.
Factory tested hydrostatically to 500 psi
(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 1/2" (15 mm)
K-factor: 5.5 (7,9 metric*)
*See Footnote 7 on approval chart on
page 142 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 Wrenches:
Standard: Part No. 05000CW/B
Recessed: Part No. 07398W
Referto "SPRINKLERACCESSORIES"
for escutcheons.
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 a
localdistributor(listedunder"Sprinklers-
Automatic-Fire") or contact Viking.
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 The
Viking Corporation 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,or modification,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". Final
approval and acceptance of all
residential sprinkler installations
mustbe obtained fromthe Author-
ity Having Jurisdiction. Residential
sprinklers are special-service sprin-
klers for use in one- and two- family
dwellings, mobile homes, and resi-
dential portions of other occupan-
cies, where allowed. The use of resi-
dential horizontal sidewall sprinklers
maybelimitedduetooccupancyand
hazard. The minimum flow rate indi-
cated for a listed area of coverage
must be provided at the sprinkler.
Therefore, the system must be hy-
draulically calculated. 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 from the bulb.
If a glass bulb lacks the appropriate
amount offluid,it should beset aside
and returned to Viking (or an author-
ized distributor) for analysis as soon
as possible. If the sprinkler is not re-
turned to Viking, it should be de-
stroyed immediately. Never install
sprinklers which have been exposed
to temperatures in excess of maxi-
mum ambient temperature allowed.
Such sprinklers should be destroyed
immediately.
C. Corrosion-resistant sprinklers must
beinstalledwhensubjecttocorrosive
atmospheres. Viking Microfast®
ModelMResidentialHorizontalSide-
wall Sprinklers are not intended for
use in corrosive environments.
D. Use care when locating sprinklers
near fixtures that can generate heat.
Do not install sprinklers where they
Replaces sprinkler page 142 a-c, dated May 14, 1998
(updated approved escutcheons list).
Sprinkler 142 a
January 28, 1999
Form No. F_080588
Units of measure in parentheses may be approximations.
TECHNICAL DATA MICROFAST®MODEL M
RESIDENTIAL HORIZONTAL
SIDEWALL SPRINKLER
OBSOLETE

will be exposed to temperatures that
exceed the maximum recommended
ambient temperature for the tem-
perature rating used.
E. Sprinklers must be protected from
mechanical damage. Adequate heat
mustbeprovidedwhensprinklersare
installed on wet-pipe systems. When
installing residential sprinklers on dry
systems, refer to appropriateinstalla-
tion standards.
F. The Microfast®Model M Residential
Horizontal Sidewall Sprinkler must
beinstalledafterthepipingisinplace
to prevent mechanical damage, and
must be installed in the horizontal
position. Before installation, be sure
to have the appropriate sprinkler
model and style, with the proper ori-
fice size, temperature rating, and re-
sponse characteristics.
Apply a small amount of pipe-joint
compound or tape to the male
threads only, taking care not to allow
abuild-upofcompoundinsidetheori-
fice. Install the sprinkler on the piping
using the special sprinkler wrench
only,while takingcare not todamage
the sprinkler operating parts. DO
NOT use the sprinkler deflector to
start or thread the sprinkler into a fit-
ting.
G. After installation, the entire sprinkler
systemmustbetestedinaccordance
with the recognized installation
standards. The test is applied after
sprinklerinstallation to ensure that 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 then reinstalled.
This is due to the fact that when the
joint seal leaks, the sealing com-
pound 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-
tionalFireProtectionAssociation’spam-
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
activity 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® Model M Residential Sprin-
klers that are 20 years old shall be
tested and/or replaced immediately
as required. Never attempt to repair
or reassemble a sprinkler. Sprinklers
that have operated cannot be reas-
sembled or re-used, but must be re-
placed. When replacing sprinklers,
use only new sprinklers.
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. All obstruc-
tions must be immediately removed
or, if necessary, additional sprinklers
installed.
D. When replacing existing sprinklers,
the system must be removed from
service. Refer to the appropriate sys-
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,
drain all water, and relieve all
pressure on the piping.
2.Usingthespecialsprinklerwrench,
remove the old sprinkler and in-
stall the new unit. Care must be
taken to ensure that the replace-
mentsprinkler is theproper model
andstyle,withtheappropriateori-
fice size, temperature rating, and
response characteristics. A fully
stocked sprinkler cabinet should
be provided for this purpose.
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 repairedorreplacedas
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.
January 28, 1999
Sprinkler 142 b
TECHNICAL DATA MICROFAST®MODEL M
RESIDENTIAL HORIZONTAL
SIDEWALL SPRINKLER
OBSOLETE

Units of measure in parentheses may be approximations.
APPROVAL CHART
AREAS OF COVERAGE4
Maximum Area Minimum Water Supply Requirements
of Coverage6Single Sprinkler Two or More UL5ULC5NYC8
Width Length
12 ft. x 12 ft. 21 gpm @ 14.7 psi 17 gpm @ 9.6 psi A1X and A1X and A1X and
3,7 m x 3,7 m 79,5 L/min @ 101,0 kPa 64,4 L/min @ 66,4 kPa C1X C1X C1X
12 ft. x 12 ft. 23 gpm @ 17.5 psi 17 gpm @ 9.6 psi A1Y and A1Y and A1Y and
3,7 m x 3,7 m 87,1 L/min @ 121,5 kPa 64,4 L/min @ 66,4 kPa C1Y C1Y C1Y
14 ft. x 14 ft. 25 gpm @ 20.7 psi 18 gpm @ 10.7 psi A1X and A1X and A1X and
4,3 m x 4,3 m 94,6 L/min @ 143,4 kPa 68,1 L/min @ 74,3 kPa C1X C1X C1X
16 ft. x 16 ft. 27 gpm @ 24.1 psi 23 gpm @ 17.5 psi
4,9 m x 4,9 m 102,2 L/min @167,4 kPa 87,1 L/min @ 121,6 kPa A1X A1X A1X
16 ft. x 16 ft. 28 gpm @ 25.9 psi 23 gpm @ 17.5 psi
4,9 m x 4,9 m 106,0 L/min @180,0 kPa 87,1 L/min @ 121,6 kPa B1X B1X B1X
16 ft. x 18 ft. 28 gpm @ 25.9 psi 23 gpm @ 17.5 psi A1X and A1X and A1X and
4,9 m x 5,5 m 106,0 L/min @ 180,0 kPa 87,1 L/min @ 121,5 kPa B1X B1X B1X
16 ft. x 20 ft. 37 gpm @ 45.2 psi 30 gpm @ 29.7 psi
4,9 m x 6,1 m 140,1 L/min @ 314,3 kPa 113,6 L/min @ 206,6 kPa A1X A1X A1X
16 ft. x 20 ft. 38 gpm @ 47.7 psi 31 gpm @ 31.7 psi
4,9 m x 6,1 m 143,9 L/min @ 331,5 kPa 117,4 L/min @ 220,8 kPa B1X B1X B1X
18 ft. x 16 ft. 29 gpm @ 27.8 psi 25 gpm @ 20.6 psi A1X and A1X and A1X and
5,5 m x 4,9 m 109,8 L/min @ 193,1 kPa 94,6 L/min @ 143,5 kPa B1X B1X B1X
18 ft. x 18 ft. 31 gpm @ 31.7 psi 26 gpm @ 22.3 psi A1X and A1X and A1X and
5,5 m x 5,5 m 117,3 L/min @ 220,6 kPa 98,4 L/min @ 155,2 kPa B1X B1X B1X
KEY
Temperature
Finish
A 1 X Escutcheon
Sprinkler 142 c
January 28, 1999
TECHNICAL DATA MICROFAST®MODEL M
RESIDENTIAL HORIZONTAL
SIDEWALL SPRINKLER
FOOTNOTES
3Base part number shown. For complete part number, see Viking price list.
4This chart shows the listingsand 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.
6For areas of coverage smaller than shown, use the "Minimum Water Supply Requirement" for the next larger area listed.
7Metric 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.
8Approved by the New York City Board of Standards and Appeals under Calendar Number 219-76-SA.
9The Microfast®Model F-1 Adjustable Escutcheon is considered a surface-mounted escutcheon because it does not allow the fusible element of the sprinkler to
be recessed behind the face of the wall or ceiling.
APPROVED ESCUTCHEONS
X - Standard surface escutcheon or Microfast®
Model F-1 Adjustable Escutcheon9
Y - Recessed with Micromatic®Model E-1
Adjustable Recessed Escutcheon
APPROVED FINISHES
1 - Brass, Bright Brass, Chrome-Enloy®,
White (Paint), and Navajo White
(Paint)
APPROVED TEMPERATURES
A - 155 °F (68 °C) installed with deflector located 4" to 6"
(102 mm to 152 mm) below the ceiling. See Footnote 5.
B - 155 °F (68 °C) installed with deflector located 6" to 10"
(152 mm to 254 mm) below ceiling. See Footnote 5.
C - 175 °F (79 °C) installed with deflector located 4" to 6"
(102 mm to 152 mm) below the ceiling. See Footnote 5.
Sprinkler Nominal Sprinkler Ceiling Temperature at Sprinkler
Temperature Temperature Rating Maximum Ambient Maximum Recommended Bulb
Classification3(Fusing Point) Temperature Allowed1Ambient Temperature2 Color
Ordinary 155 °F (68 °C) 135 °F (46 °C) 100 °F (38 °C) Red
Intermediate 175 °F (79 °C) 155 °F (68 °C) 150 °F (65 °C) Yellow
Sprinkler Finishes: Brass, Bright Brass, Chrome-Enloy®(patents pending), White (Paint), and Navajo White (Paint)
FOOTNOTES
1 Based on National Fire Prevention and Control Administration Contract No. 7-34860.
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.
Deflector Thread Nominal Nominal Overall
Style Size NPT Orifice K-factor7Length Base Part Number3
Horizontal 1/2 inch 1/2 inch 5.5 U.S. 2.75 inch
Sidewall (15 mm) (15 mm) (7,9 metric) (69,9 mm) 06769B
OBSOLETE