Viking Microfast M Instruction manual

1. PRODUCT NAME
Viking Microfast®Model M Quick
Response Sprinkler
•Styles: Upright, Pendent, and
Conventional
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 Quick
Response Sprinkler is a small,
thermosensitive glass-bulb spray
sprinkler. The pip-cap and sealing
assemblyofthesprinklerisheldinplace
by a rugged 3 mm glass bulb.
Viking Microfast®Model M Quick
Response Sprinklers are available in
three styles with several finishes,
temperature ratings, and orifice sizes to
meet design requirements. The special
polyester and Teflon®coatings can be
used in decorative applications where
colorsaredesired.Inaddition,thesetwo
finishes are corrosion resistant and
provide protection against many
corrosive environments.
During fire conditions, when the
temperature around the sprinkler
reaches its operating temperature, the
heat-sensitive liquid in the glass bulb
expands, causing the bulb to shatter,
releasing the pip-cap and sealing spring
assembly. Water flowing through the
sprinkler orifice strikes the sprinkler
deflector, forming a uniform spray
pattern to extinguish or control the fire.
4. TECHNICAL DATA
LISTINGS AND APPROVALS
Refer to Table 2 on page 51 c.
Glass-bulb fluid temperature rated to
-65 °F (-55 °C).
Rated to 175 psi (1 207 kPa) water
working 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
Minimumoperatingpressure:7psi(48,3
kPa)
SPRINKLER MATERIALS
Frame: Brass Castings UNS-C84400
Deflector: Brass UNS-C26000
Bushing: Brass UNS-C36000
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
Polyester-Coated Sprinklers:
Spring: Nickel Alloy, exposed
Screw: Brass UNS-C36000
Painted for appearance only.
Pip Cap: Copper UNS-C11000 and
Stainless Steel UNS-S30400
Teflon®-Coated Sprinklers:
Spring: Nickel Alloy, exposed
Screw: Brass UNS-C36000
Painted black for appearance only.
Pip Cap: Copper UNS-C11000 and
Stainless Steel UNS-S30400,
Teflon®Coated
ACCESSORIES
Sprinkler Wrenches:
•StandardWrench:PartNo.05000CW/B
•Wrench for coated and recessed
Microfast®Sprinklers: Part No.
07398W*
* A ½" ratchet is required (not available from
Viking).
Refer to the “SPRINKLER
ACCESSORIES” section of the Viking
Engineering and Design Databook for
technical data on approved
escutcheons and other accessories.
5. AVAILABILITY AND SERVICE
Vikingsprinklersareavailablethrougha
network of domestic, Canadian, and
international distributors. See the
YellowPages ofthe telephonedirectory
for a local distributor (listed under
“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.
Form No. F_080488
TECHNICAL DATAMicrofast ®MODEL M
QUICK RESPONSE
SPRINKLER
Sprinkler51a
May 27, 1999
Replacessprinklerpage51a-d,datedJune18,1998
(revised pip-cap materials).
Sprinkler
Temperature
Classification
Nominal Sprinkler
Temperature Rating
(Fusing Point)
Ceiling Temperature at SprinklerBulb
Color
Max. Ambient
Temp.Allowed 1Max. Recommended
Ambient Temp.2
Ordinary135 °F (57 °C)115 °F (46 °C)100 °F (38 °C)Orange
Ordinary155 °F (68 °C)135 °F (57 °C)100 °F (38 °C)Red
Intermediate175 °F (79 °C)155 °F (68 °C)150 °F (65 °C)Yellow
Intermediate200 °F (93 °C)180 °F (82 °C)150 °F (65 °C)Green
High286 °F (141 °C)266 °F (130 °C)225 °F (107 °C)Blue
Sprinkler Finishes: Brass, Bright Brass, Chrome-Enloy ®(patents pending), White Poly-
ester 3, Navajo White Polyester3, Black Polyester 3, and Black Teflon ®3
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.
3The corrosion-resistant coatings have passed standard corrosion tests required by
particular approving agencies. Refer to the approval chart on page 51 c. These tests can-
not and do not represent all possible corrosive environments. Prior to installation, verify
through the end-user that the coatings are compatible with or suitable for the proposed
environment. The coatings indicated are applied to the exposed exterior surfaces only.
NOTE: The sprinkler is exposed on the Polyester-Coated and Teflon ®-coated sprinklers.
Table 1
OBSOLETE

6. GUARANTEES
For details of warranty, refer to Viking’s
currentlistpricescheduleorcontactThe
Viking Corporation directly.
7. INSTALLATION
WARNING:Viking sprinklers are
manufactured and tested to meet the
rigid requirements of approving
agencies. The sprinklers are designed
to be installed in accordance with
recognized installation standards.
Deviation from the standards or any
alteration to the sprinkler after it leaves
the factory including, but not limited 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. Sprinklers are to be installed in
accordance with the latest published
standards of the National Fire
Protection Association, Factory
Mutual, Loss Prevention Council,
Assemblee Pleniere, Verband der
Sachversicherer or other similar
organizations, and also with the
provisions of governmental codes,
ordinances, and standards
whenever applicable. The use of
quick response sprinklers may be
limitedduetooccupancyandhazard.
Refer to the Authority Having
Jurisdiction prior to installation.
B.Sprinklersmustbehandledwithcare.
They must be stored in a cool, dry
place in their original shipping
container. Never install sprinklers
that have been dropped, damaged in
anyway,orexposedtotemperatures
in excess of the maximum ambient
temperature allowed. Never install
any glass-bulb sprinkler if the bulb is
cracked or if there is a loss of liquid
fromthebulb.Ifaglassbulblacksthe
appropriate amount of fluid, it should
be set aside and returned to Viking
(or an authorized Viking distributor)
for analysis as soon as possible. If
thesprinklerisnot returned to Viking,
it should be destroyed immediately.
C. Corrosion-resistant sprinklers must
be installed when subject to
corrosive atmospheres. When
installing corrosion-resistant
sprinklers, take care not to damage
the corrosion-resistant coating. Use
only the special wrench designed for
installingcoatedandrecessedViking
sprinklers (any other wrench may
damage the unit).
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
temperature rating used.
E. Before installation, be sure to have
the appropriate sprinkler model and
style, with the proper orifice size,
temperature rating, and response
characteristics. The sprinklers must
beinstalledafterthepipingisinplace
to prevent mechanical damage.
1. Installescutcheon(ifused), which
is designed to thread onto the
external threads of the sprinkler.
Refer to the “Sprinkler
Accessories”sectionoftheViking
Engineering and Design Data
book for technical data on
approved escutcheons and other
accessories.
2. Apply a small amount of pipe-joint
compound or tape to the external
threads of the sprinkler only,
taking care not to allow a build-up
ofcompoundinthesprinklerinlet.
3. Install the sprinkler on the piping
usingthespecialsprinklerwrench
only, taking care not to
over-tighten or damage the
sprinkler operating parts. DO
NOT use the deflector to start or
thread the sprinkler into a fitting.
F. After installation, the entire sprinkler
systemmustbetestedinaccordance
with the recognized installation
standards. The test is applied after
the sprinkler installation to ensure
that no damage has occurred to the
sprinkler during shipping and
installation, and to make sure the
sprinkler has been properly
tightened. If a thread leak occurs,
normally the sprinkler must be
removed, new pipe-joint compound
or tape applied, and then reinstalled.
This is due to the fact that when the
joint seal is damaged, the sealing
compound or tape is washed out of
the joint. Air testing the sprinkler
piping priorto testing withwater may
be considered in areas where
leakage during testing must be
prevented. Refer to the Installation
Standards and the Authority Having
Jurisdiction.
G. Sprinklers must be protected from
mechanical damage. Wet-pipe
systems must be provided with
adequateheat. When installing quick
response sprinklers on dry systems,
refer to the Installation Standards
and the Authority Having
Jurisdiction.
8. MAINTENANCE
NOTICE:The owner is responsible for
maintaining the fire-protection system
and devices in proper operating
condition. For minimum maintenance
and inspection requirements, refer to
the National Fire Protection
Association’s pamphlet that describes
care and maintenance of sprinkler
systems. In addition, the Authority
Having Jurisdiction may have additional
maintenance, testing, and inspection
requirements that must be followed.
A.Sprinklers must be inspected on a
regular basis for corrosion,
mechanical damage, obstructions,
paint, etc. The frequency of the
inspections may vary due to
corrosive atmospheres, water
supplies, and activity around the
device.
B. Sprinklers that have been painted or
mechanically damaged must be
replaced immediately. Sprinklers
showing signs of corrosion shall be
tested and/or replaced immediately
as required. Quick response
sprinklers that are 20 years old shall
be tested and/or replaced as
required. Sprinklers that have
operated cannot be reassembled or
re-used,butmustbereplaced.When
replacing sprinklers, use only new
sprinklers.
C. The sprinkler discharge pattern is
critical for proper fire protection.
Nothing should be hung from,
attachedto,orotherwiseobstructthe
discharge pattern. All obstructions
must be immediately removed or, if
necessary, additional sprinklers
installed.
D.When replacing existing sprinklers,
the system must be removed from
service.Refertotheappropriate
TECHNICAL DATAMicrofast®MODEL M
QUICK RESPONSE
SPRINKLER
Sprinkler 51 bMay 27, 1999
(Continued on page 51 d)
OBSOLETE

TECHNICAL DATAMicrofast®MODEL M
QUICK RESPONSE
SPRINKLER
Sprinkler 51 c
May 27, 1999
Approval Chart
Microfast Model M Quick Response Sprinklers
(Standard Orifice, 3 mm Glass Bulb)
Thread
SizeNominal OrificeDescriptionNominal K-factorOverall LengthListings and Approvals 2
NPTBSPInchesmmStyleBase P/N 1U.S.metric 10InchesmmULULCFM 9NYC3VdSLPCB
1/2"–1/2–Upright06661B5.5–2.358A2A2A1B2– –
1/2"15 mm1/215Pendent 606662B5.57,92.358A2X, D2YA2X, D3YA1X, D1YA2X, D2YC1A1Z
–15 mm– 15Upright07060B–7,9– 58– – A1–C1A1
Large Orifice
3/4"20 mm17/3220Upright06665B8.011,52.461A2A3A1A2– –
3/4"20 mm17/3220Pendent 606666B8.011,52.461A2X, D2YA3XD1YA2X, D2Y– –
1/2"–17/32–Pendent 5,606765B8.0–2.974A2XA3X–A2X– –
1/2"–17/32–Upright 506764B8.0–2.974A2A3–A2– –
Small Orifice 7
1/2"–3/8–Pendent 4,606718B2.7–2.769A2X, D2YA2X, D2Y–A2X– –
1/2"–3/8–Upright 406717B2.7–2.769A2A2–A2– –
1/2"–7/16–Upright 406719B4.0–2.769A2A2–A2– –
1/2"–7/16–Pendent 4,606720B4.0–2.769A2XA2X–A2X– –
–10 mm– 10Upright06931B–5,82.358– – – – C1–
–10 mm– 10Pendent 606932B–5,82.358– – – – C1–
Conventional
1/2"15 mm1/215Conventional06766B5.57,92.461A2– – A2–A1
3/4"20 mm17/3220Conventional06768B8.011,52.461A2– – A2– –
Approved Temperatures
A - 135 °F (57 °C), 155 °F (68 °C),
175 °F (79 °C), 200 °F (93 °C),
and 286 °F (141°C)
B - 135 °F (57 °C) and 155 °F
(68 °C)
C - 155 °F (68 °C)
D - 135 °F (57 °C), 155 °F (68 °C),
175 °F (79 °C), and 200 °F
(93 °C)
Approved Finishes
1 - Brass and Chrome-Enloy
2 - Brass, Bright Brass, Chrome-
Enloy ®, White Polyester 8, Navajo
White Polyester 8, Black Polyester 8,
and Black Teflon ®8
3 - Brass, Bright Brass, Chrome-
Enloy ®, White Polyester 8, Navajo
White Polyester 8, and Black Polyes-
ter 8
Approved Escutcheons
X - Standard surface-mounted escutcheon or Microfast ®
Model F-1 Adjustable Escutcheon 11
Y - Standard surface escutcheon or Microfast®Model F-1
Adjustable Escutcheon 11, orrecessed with Micro-
matic ® Model E-1 Adjustable Recessed Escutcheon
Z - Standard surface-mounted escutcheon or Microfast ®
Model F-1 Adjustable Escutcheon 11 , orrecessed
Footnotes
1Base part number is shown. For complete part number, see Viking's current price schedule.
2This table shows the listings and approvals available at the time of printing. Other approvals arein process. Check with the manufacturer
for any additional approvals.
3Acceptance for use, City of New York Board of Standards and Appeals, Calendar Number 219-76-SA.
4The sprinkler frame is identified with the nominal orifice size, and the deflector has a protrudin g pintle. The sprinkler orifice is bushed.
5 The sprinkler frame is identified with the nominal orifice size, and the deflector has a protrudingpintle.
6Refer to the "Sprinkler Accessories" section of the Viking Engineering and Design Data book for technical data on approved escutcheons
and other accessories.
7 UL and ULC Listings, and FM and NYC Approvals are limited to Light Hazard hydraulically calc ulated systems.
8UL and ULC Listed and NYC Approved as a corrosion-resistant sprinkler.
9 FM Approved for use in wet-pipe sprinkler systems (or preaction systems qualifying as wet sy stems) for protection of occupancies de-
scribed in the Factory Mutual Engineering and Research Loss Prevention Data Sheets and Technical Advisory Bulletins.
10Metric K-Factor shown is for use when pressure is measured in kPa. When pressure is measured in BA R, multiply the metric K-Factor
shown by 10.0.
11The 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 2
KEY
Temperature
Finish
A1XEscutcheon (if applicable)
OBSOLETE

system description and/or valve in-
structions. Prior to removing the sys-
tem from service, notify all Author-
ities Having Jurisdiction. Consider-
ation should be given to employment
of a fire patrol in the affected 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
appropriate orifice size, tempera-
ture rating, and response charac-
teristics. A fully stocked spare
sprinkler cabinet should be pro-
vided 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 and repaired or replaced as
necessary.Sprinklersthathavebeen
exposed to corrosive products of
combustion or high ambient
temperatures,buthavenotoperated,
should be replaced. Refer to the
Authority Having Jurisdiction for
minimumreplacementrequirements.
FormNo.F_080488
Replaces sprinkler page 51 a-d, dated June 18, 1998
(revised pip-cap materials).
TECHNICAL DATAMicrofast® MODEL M
QUICK RESPONSE
SPRINKLER
Sprinkler 51 d
May 27, 1999
OBSOLETE