Viking Microfast M-5 Instruction manual

1. PRODUCT NAME
Viking Microfast®Model M-5 Residen-
tial Horizontal Sidewall Sprinkler
•Base Part No. 09533
•Available since 1996.
2. MANUFACTURER
The Viking Corporation
210 N. Industrial Park Road
Hastings, Michigan 49058, USA
Telephone:[phone]
[phone]
Fax:[phone]
e-mail: [email protected]m
3. PRODUCT DESCRIPTION
The Viking Microfast ® Model M-5 Resi-
dentialHorizontalSidewallSprinklerisa
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. The orifice design, with a
K-factor of 5.5, allows efficient use of
availablewatersuppliesforthehydrauli-
cally 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
providing being aesthetically pleasing.
The sprinkler is listed for use below
smooth, flat, horizontal ceilings and
ceilings with slopes up to and includ-
ing a 6/12 (26.6°) pitch.
Duringfireconditions,theheat-sensitive
liquidintheglassbulbexpands,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 extin-
guish or control the fire.
4. TECHNICAL DATA
LISTINGS AND APPROVALS
Refer to Table 1 on page 142 L.
See chart for minimum water supply re-
quirements and maximum areas of
coverage. Refer also to Installation
Guidelines:
—Figure 1 (page 142 m)
—Figure 2 (page 142 n)
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: ½" (15 mm) NPT
Orifice Size: Nominal ½" (13 mm)
K-factor: 5.5 U.S. (7,9 Metric*)
* Metric K-factor shown is for use when pressure is
measuredin kPa. Whenpressure is measured in
BAR, multiply the metric K-factor shown by 10.0.
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-C11000 and
Stainless Steel UNS-S30400
ACCESSORIES
Sprinkler Wrenches:
•Standard: Part No. 05000CW/B
•Recessed: Part No. 07398W
Refer to the “SPRINKLER ACCES-
SORIES” section of the Viking Engi-
neering and Design Databook for tech-
nical data on escutcheons.
5. AVAILABILITY AND SERVICE
Vikingsprinklers are availablethrough a
network of domestic, Canadian, and in-
ternational distributors. See the Yellow
Pagesofthetelephonedirectoryforalo-
cal distributor (listed under “Sprin-
klers-Automatic-Fire”)orcontactViking.
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
currentpricescheduleorcontactTheVi-
king Corporation directly.
7. INSTALLATION
WARNING:Viking sprinklers are manu-
factured and tested to meet the rigid re-
quirements of approving agencies. The
sprinklersaredesignedto be installedin
accordance with recognized installation
standards.Deviationfromthestandards
or any alteration to the sprinkler after it
leaves the factory including, but not lim-
ited to: painting, plating, coating, or
modification, may render the sprinkler
inoperative and will automatically nullify
the approval and any guarantee made
by The Viking Corporation.
A.Sprinklersaretobeinstalledinaccor-
dance with the latest published stan-
dards of the National Fire Protection
Association, Factory Mutual, Loss
Prevention Council, Assemblee
Pleniere, Verband der
Sachversicherer or other similar or-
ganizations,and alsowith provisions
of governmental codes, ordinances,
and standards whenever applicable.
For conditions not specifically cov-
ered by the Standards, refer to the
“Viking Residential Installation
Guide”. Final approval and accep-
tance of all residential sprinkler in-
stallationsmust be obtainedfrom the
Authority Having Jurisdiction. Resi-
dential sprinklers are special-service
sprinklers for use in one- and
two-family dwellings, mobile homes,
and residential portions of other oc-
cupancies, where allowed. The use
of residential horizontal sidewall
sprinklers may be limited due to oc-
cupancy and hazard. The minimum
flow rate indicated for a listed area of
coverage must be provided at the
sprinkler. Therefore, the system
mustbe hydraulically calculated.Re-
fer to the Authority Having Jurisdic-
tion prior to installation.
B.Sprinklersmustbehandledwithcare.
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
amountoffluid, itshouldbe setaside
and returned to Viking (or an autho-
rized Viking distributor) for analysis
assoonaspossible.Ifthesprinkleris
not returned to Viking, it should be
destroyed immediately. Never install
sprinklersthat have beenexposed to
temperatures in excess of maximum
ambient temperature allowed. Such
sprinklers should be destroyed im-
mediately.
C. Corrosion-resistant sprinklers must
be installed when subject to corro-
sive atmospheres. Viking Microfast ®
Model M-5 Residential Horizontal
Sprinkler 142 j
Replaces sprinkler page 142 j-n, dated June 4, 1998
(revised pip-cap materials).
May 27, 1999
Form No. F_060297
Units of measure in parentheses may be approximations.
TECHNICAL DATAMicrofast®MODEL M-5
RESIDENTIAL HORIZONTAL
SIDEWALL SPRINKLER
OBSOLETE

Sidewall 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
will be exposed to temperatures that
exceed the maximum recommended
ambient temperature for the temper-
ature rating used.
E. Sprinklers must be protected from
mechanical damage. Adequate heat
must be provided when sprinklers
are installed on wet-pipe systems.
F. Before installation, be sure to have
the appropriate sprinkler model and
style, with the correct orifice size,
temperature rating, and response
characteristics.
DEFLECTOR LOCATION:
Microfast®Model M-5 Residential
Horizontal Sidewall Sprinklers must
be installed only below smooth, flat,
horizontal ceilings or sloped ceilings
allowed by the listing.
For any area of coverage below a
smooth, flat, horizontal ceiling, these
sprinklers mustbe installed with the
deflectors located 6" to 12" (152 mm
to 305 mm) below the ceiling.
Microfast®Model M-5 Residential
Horizontal Sidewall Sprinklers to be
locatedonthesideofaslopedceiling
with spray directed across the slope
mustbe installed with their deflec-
tors6"to12"(152mmto305mm)be-
low the ceiling for any area of cover-
age.
Microfast®Model M-5 Residential
Horizontal Sidewall Sprinklers to be
locatedatthepeakofaslopedceiling
with spray directed down the slope
must be installed with the deflectors
6" (152 mm) below the ceiling for any
area of coverage.
Always align the top of the horizontal
sidewalldeflectorsparalleltotheceil-
ingor roof. Thesprinklers must bein-
stalled after the piping is in place to
prevent mechanical damage.
1. Install escutcheon (if used), which
is designed to thread onto the ex-
ternalthreadsofthe sprinkler. Re-
fer to the “Sprinkler Accessories”
section of the Viking Engineering
and Design Databook for techni-
cal data on approved escutch-
eons and other accessories.
2. Apply a small amount of pipe-joint
compound or tape to the external
threads of the sprinkler only, tak-
ing care not to allow a build-up of
compound in the sprinkler inlet.
3. Install the sprinkler on the piping
usingthe special sprinklerwrench
only, taking care not to over
tighten or 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 stan-
dards. The test is applied after sprin-
kler installation to ensure that no
damagehasoccurredtothesprinkler
during shipment and installation, and
to make sure the unit has been prop-
erlytightened.Ifathreadleakoccurs,
normally the unit must be removed,
new pipe-joint compound or tape ap-
plied, and then 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’s
pamphlet that describes care and main-
tenance of sprinkler systems. In addi-
tion, the Authority Having Jurisdiction
may have additional maintenance, test-
ing, and inspection requirements that
must be followed.
A.Thesprinklersmustbeinspectedona
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.
Microfast® Model M-5 Residential
Horizontal Sidewall Sprinklers that
are 20 years old shall be tested
and/or replaced immediately as re-
quired. Never attempt to repair or re-
assemble a sprinkler. Sprinklers that
have operated cannot be reassem-
bled or re-used, but must be re-
placed. When replacing sprinklers,
useonlynewsprinklerswithidentical
performance 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 sprinkler. All
obstructionsmustbeimmediatelyre-
moved or, if necessary, additional
sprinklers installed.
D. When replacing existing sprinklers,
the system must be removed from
service.Refertotheappropriate 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. Using the special sprinkler
wrench, remove the old sprinkler
and install the new unit. Care
must be taken to ensure that the
replacement sprinkler is the
proper model and style, with the
correct orifice size, temperature
rating, and response characteris-
tics.A fully stockedsprinkler cabi-
net 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
subjected to a fire must be returned
to service as soon as possible. The
entire system must be inspected for
damage,andrepairedorreplacedas
necessary. Sprinklers that have
been exposed to corrosive products
of combustion or high ambient tem-
peratures, but have not operated,
should be replaced. Refer to the Au-
thority Having Jurisdiction for mini-
mum replacement requirements.
May 27, 1999
Sprinkler 142 k
TECHNICAL DATAMicrofast®MODEL M-5
RESIDENTIAL HORIZONTAL
SIDEWALL SPRINKLER
OBSOLETE

Sprinkler 142 LMay 27, 1999
TECHNICAL DATAMicrofast®MODEL M-5
RESIDENTIAL HORIZONTAL
SIDEWALL SPRINKLER
Sprinkler
Temperature
Classification
Nominal Sprinkler
Temperature Rating
(Fusing Point)
Ceiling Temperature at Sprinkler
Maximum Ambient
Temperature Allowed1Maximum Recommended
Ambient Temperature 2Bulb Color
Ordinary155 °F (68 °C)135 °F (46 °C)100 °F (38 °C)Red
Intermediate175 °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)
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, an d other requirements of the Authority Having
Jurisdiction. Refer to specific installation standards.
Deflector StyleNPTThread SizeNominal OrificeNominal K-FactorOverall LengthBase Part
Number 3
InchmmInchmmUSmetric 9Inchmm
Horizontal Sidewall½15½155.57,92.7569,909533
Approval Chart
Microfast ®Model M-5
Residential Horizontal Sidewall Sprinkler
(Refer to Figures 1 and 2 on pages 142 m-n.)
Smooth, Flat, Horizontal Ceilings, or Sloped Ceilings with Sprinklers at Peak Spraying Down t he Slope
Maximum Areas
of Coverage 6,7
Width x Length
Minimum Water Supply RequirementsListings 4
Single SprinklerTwo or More SprinklersUL 5C-UL8
12' x 12'
(3,7 m x 3,7 m)21.0 gpm @ 14.6 psi (79,5 L/min @ 101,0 kPa15.0 gpm @ 7.4 psi (56,8 L/min @ 51,0 kPaA1XA1X
14' x 14'
(4,3 m x 4,3 m)22.0 gpm @ 16.0 psi (83,3 L/min @ 110,0 kPa17.0 gpm @ 9.6 psi (63,4 L/min @ 66,0 kPaA1XA1X
16' x 16'
(4,9 m x 4,9 m)24.0 gpm @ 19.0 psi (90,9 L/min @ 131,0 kPa21.0 gpm @ 14.6 psi (79,5 L/min @ 101,0 kPaA1XA1X
16' x 18'
(4,9 m x 5,5 m)27.0 gpm @ 24.1 psi (102,2 L/min @ 166,0 kPa22.0 gpm @ 16.0 psi (83,3 L/min @ 110,0 kPaA1XA1X
16' x 20'
(4,9 m x 6,1 m)32.0 gpm @ 33.9 psi (121,1 L/min @ 234,0 kPa30.0 gpm @ 29.8 psi (113,6 L/min @ 206,0 kPaA1XA1X
Sloped Ceilings with Sprinklers at Side Spraying Across the Slope
Maximum Area
of Coverage 6,7
Width x Length
Minimum Water Supply RequirementsListings 4
Single SprinklerTwo or More SprinklersUL 5C-UL8
12' x 12'
(3,7 m x 3,7 m)21.0 gpm @ 14.6 psi (79,5 L/min @ 101,0 kPa15.0 gpm @ 7.4 psi (56,8 L/min @ 51,0 kPaA1XA1X
16' x 16'
(4,9 m x 4,9 m)24.0 gpm @ 19.0 psi (90,9 L/min @131,0 kPa21.0 gpm @ 14.6 psi (79,5 L/min @ 101,0 kPaA1XA1X
Approved
Temperatures
A - 155 °F (68 °C) and
175 °F (79 °C)
Approved Finishes
1 - Brass, Bright Brass, Chrome-
Enloy ®, White (paint), and
Navajo White (paint)
Approved Escutcheons
X - Standard surface-mounted escutcheons or Microfast ®Model F-1
Adjustable Escutcheon 10, orrecessed with the Micromatic ® Model
E-1 Adjustable Recessed Escutcheon
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 and ceilings with slopes up to a 6/12 (26.6°) pitch. See Footnotes
6, 7, and 8.
6Listed area of coverage measured along ceiling. Consult Figures 1 and 2 on pages 142 m-n, an d "Residential Installation Guide" para-
graphs that pertain to sprinklers with listings for both smooth, flat, horizontal ceilings a nd sloped ceilings for installation details.
7For areas of coverage smaller than shown, use the "Minimum Water Supply Requirement" for the next larger area listed. Flows and pres-
sures listed are per sprinkler.
8Listed by Underwriters Laboratories Inc. for use in Canada.
9Metric 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.
10The Microfast®Model F-1 Adjustable Escutcheon is considered a surface-mounted escutcheon because it do es not allow the fusible ele-
ment of the sprinkler to be recessed behind the face of the wall or ceiling.
Table 1
KEY
Temperature
Finish
A1XEscutcheon (if applicable)
OBSOLETE

Figure 1: Installation Guidelines
Sprinklers installed on the side of a sloped ceiling with throw directed across the slope.
NOTES:
1.A single sprinkler installation has been shown for clarity. Actual installations may req uire
multiple sprinklers. For multiple sprinkler installations, sprinklers may be inst alled on opposite
walls, throwing toward each other.
2.This figure shows an installation of a sprinkler on the side of a sloped ceiling. Installations in
this configuration are limited to a 6/12 (26.6 °) maximum ceiling slope.
3.For “cathedral” ceiling applications, install sprinklers in a symmetrical mirror-image of Figure 1.
4.Maximum allowable compartment sizes are as follows: (Area measured along slope)
One Sprinkler, Single Wall:16’ Width x 16’ Throw (Calculate one sprinkler)
One Sprinkler Each, Opposite Walls:16’ Width x 32’ Throw (Calculate two sprinklers)
Two Sprinklers, Single Wall:32’ Width x 16’ Throw (Calculate two sprinklers)
Two Sprinklers Each, Opposite Walls:32’ Width x 32’ Throw (Calculate two sprinklers)
Three Sprinklers, Single Wall:48’ Width x 16’ Throw (Calculate three sprinklers)
Three Sprinklers Each, Opposite Walls:48’ Width x 32’ Throw (Calculate three sprinklers)
5.Maximum allowable number of sprinklers percompartmentis six.
6.Sprinklers may be installed in any combination of acceptable installation locations, aslong as
each sprinkler is located in accordance with its individual listings.
May 27, 1999
Sprinkler 142 m
TECHNICAL DATAMicrofast®MODEL M-5
RESIDENTIAL HORIZONTAL
SIDEWALL SPRINKLER
Maximum ceiling
slope = 6/12
(26.6°). See Note
2 below.
Maximum Throw
16’-0"
Deflector must
be 6" (152 mm)
minimum to 12"
(305 mm) maxi-
mum from the
ceiling. Keep top
of deflector
parallel to the
ceiling.
Listed areas of cov-
erage correspond
to ceiling slope.
(For sloped ceiling
installations, actual
floor coverage will
be less than listed
area.)
Maximum 8’-0"
(2,4 m) high
opening
allowed in
perimeter
walls.
OBSOLETE

Figure 2: Installation Guidelines
Sprinklers installed at peak of a sloped ceiling with spray directed downthe slope.
NOTES:
1.Actual installations may require multiple sprinklers. A single sprinkler installation has been
shown for clarity.
2.This figure describes installations at the peak of sloped ceilings. Installations in this configura-
tion are limited to a 6/12 (26.6°) pitch.
3.Sprinkler mustbe installed 6" (152 mm) down from peak.
4.Maximum height from finished floor to sprinkler deflector is 18’-0".
5.Maximum width of compartment regardless of sprinkler area of coverage is 32’-0".
Maximum compartment sizes are based on sprinkler listings (i.e.: 12’ x 32’, 14’ x 32’, etc.)
6.Listed areas of coverage are measured along ceiling (for sloped ceiling installations, actual
floor coverage will be less than listed area).
7.A maximum of two sprinklers are required to be hydraulically calculated per compartment.
Sprinkler 142 n
May 27, 1999
TECHNICAL DATAMicrofast®MODEL M-5
RESIDENTIAL HORIZONTAL
SIDEWALL SPRINKLER
26.6° max.
Microfast ®Model M-5
Residential Horizontal Sidewall
installed with Micromatic®Model
E-1 Adjustable Recessed
Escutcheon. Top of deflector
mustbe 6" from ceiling.
Top of deflector must
be 6" from ceiling.
Always align top of
deflector parallel to ceiling.
Maximum height
from deflector to finished
floor = 18’-0".
OBSOLETE