Viking VK3522 Instruction Manual

F_111420 Rev 03 April 2023
TECHNICAL DATA SHEET
Page 1 of 9
TECHNICAL DATA SHEET VK3522 Quick Response
Pendent Sprinkler K8.0 (115)
1. PRODUCT IDENTIFICATION
This document covers the following product, hereafter
referred to as “sprinkler”:
VK3522: Quick Response, Standard Coverage,
Pendent, K8.0 (115) Sprinkler.
2. INTENDED USE
The sprinkler is intended to be used in automatic fire
sprinkler systems as allowed by applicable approval
authorities. The sprinkler must be used in accordance
with:
1. the sprinkler’s Listings, Approvals, and associated
design requirements.
2. the recognized design and installations standards
issued, for example NFPA, FM, EN, VdS, or LPCB.
3. the latest revisions of all applicable manufacturer’s
documentation.
Governmental codes, ordinances, and standards may apply and may differ from one another.
WARNING
!
Cancer and Reproductive Harm www.P65Warnings.ca.gov
3. LISTING AND APPROVALS
Refer to section 5 for details and requirements that must be followed.
cULus Listed VdS Approved
FM Approved UKCA Approved
CE MED Approved
LPCB Approved

F_111420 Rev 03 April 2023
Page 2 of 9
TECHNICAL DATA SHEET VK3522 Quick Response
Pendent Sprinkler K8.0 (115)
4. TECHNICAL SPECIFICATIONS
4.1 Definitions
Standard Pendent Sprinkler: A sprinkler intended to be oriented with the deflector below the frame so water flows
downward through the orifice, striking the deflector and forming an umbrella-shaped spray pattern downward. These
sprinklers are marked “SP/RP” (Standard Pendent/Recessed Pendent). When a standard pendent sprinkler is used
with a recessed escutcheon, it becomes a recessed pendent sprinkler.
Recessed Sprinkler: A spray sprinkler assembly intended for installation with a concealed piping system. The
assembly consists of a sprinkler installed in a decorative adjustable recessed escutcheon that minimizes the protrusion
of the sprinkler beyond the ceiling or wall without adversely affecting the sprinkler distribution or sensitivity. Refer to the
appropriate technical data page for allowable sprinkler models, temperature ratings, and occupancy classifications.
NOTICE: Do not recess any sprinkler not listed or approved for use with the escutcheon. Refer to Section 5.
Corrosion Resistant Sprinkler: A special service sprinkler with non-corrosive protective coatings, or that is fabricated
from non-corrosive material, for use in atmospheres that would normally corrode sprinklers. Sprinklers can be ordered
as corrosion resistant sprinklers and can be used with escutcheons when allowed by the approval body.
4.2 Ratings and Physical Characteristics
Parameter Value
Minimum operating pressure 7 psi (0.5 bar)
Maximum rated pressure 175 psi (12 bar)
Factory tested pressure 500 psi (35 bar)
Thread size 1/2” NPT or 15 mm BSPT
Nominal K–factor 8.0 U.S. (115)
Minimum temperature rating (glass bulb) –65 °F (–55 °C)

F_111420 Rev 03 April 2023
Page 3 of 9
TECHNICAL DATA SHEET VK3522 Quick Response
Pendent Sprinkler K8.0 (115)
4.3 Markings and Dimensions
Figure – 1 Markings Figure – 2: Dimensions
Ref Description Value
A
Response type QR: Quick Response
B
Listings and Approvals See sections 3 and 5
C
Sprinkler type SP/RP: Standard Pendent/Recessed Pendent
D
Manufacture date (year) See marking
E
Nominal temperature rating See marking
F
Manufacturers Sprinkler Identification Number (SIN) VK3522
G
Nominal pipe engagement 7/16” (11 mm)
H
Height 1-15/16” (51 mm)

F_111420 Rev 03 April 2023
Page 4 of 9
TECHNICAL DATA SHEET VK3522 Quick Response
Pendent Sprinkler K8.0 (115)
4.4 Materials of Construction
NOTICE: Do not disassemble the sprinkler.
Figure – 3 Sprinkler Components
Ref Description Material
1Compression screw
Brass CW612N, CW508L, UNS–C36000 or UNS–C26000
2Deflector
Stainless steel UNS S30400
3Sprinkler body CW602N, UNS–C84400 or QM brass
4Pip cap seal Polytetrafluoroethylene (PTFE)
5Pip cap shell Stainless steel UNS–S44400
6Belleville spring Nickel alloy
7Pip cap disc Stainless steel UNS–S30100
8Bulb
Glass, nominal 0.1" (3 mm) diameter

F_111420 Rev 03 April 2023
Page 5 of 9
TECHNICAL DATA SHEET VK3522 Quick Response
Pendent Sprinkler K8.0 (115)
5. LISTING AND APPROVAL DESIGN REQUIREMENTS
5.1 Listing and Approval Specifications
5.2 cULus Listing Requirements and Details
The sprinkler is cULus Listed as indicated in Table 5.1 for installation in accordance with the latest edition of NFPA 13
for standard spray sprinklers. This sprinkler is designed for use in light and ordinary hazard occupancies. Venting is not
required.
NOTE: The sprinkler is only UL Listed for retrofit, and not for new installations.
Sprinkler
Base Part
Number1
Thread Size Approval Body
Maximum WWP 175 psi (12 bar)
NPT BSPT
cULus FM
Approval
Specification
Approval
Specification
23874 1/2" —
A1, A2X, A3Y A1, B2X, B3Y
23886 — 15 mm
A1, A2X, A3Y A1, B2X, B3Y
Additional Listings and Approvals
Maximum WWP 175 psi (12 bar)
CE LPCB VdS UKCA MED
23874 1/2" —
A1, B2X, B3Y A1, A2X, A3Y A1 A1, A2X, A3Y A1, A2X, A3Y
23886 — 15 mm
A1, B2X, B3Y A1, A2X, A3Y A1 A1, A2X, A3Y A1, A2X, A3Y
Approval Specification (Temperature Ratings) Key:
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), 155 °F (68 °C), 175 °F (79 °C), and 200 °F (93 °C)
Approval Specification (Finishes) Key:
1 = Brass, Chrome, White Polyester
2,3
, Black Polyester
2,3
, and ENT
3,4
2 = Brass, Chrome, White Polyester
2,3
, and Black Polyester
2,3
3 = ENT
3,4
Approval Specification (Escutcheons) Key:
X = Installed with Viking Recessed Escutcheons Models E-1, E-2, E-3, NP-1, NP-2, and NP-3, or Viking Standard Surface
Mounted Escutcheons
Y = Installed with Viking Recessed Escutcheons Models E-1 and NP-1, or Viking Standard Surface Mounted Escutcheons
1 For complete part number, refer to Viking’s current price list.
2 For White Polyester and Black Polyester, other colors are available upon request and will carry the same Listings and Approvals as the standard colors.
3 cULus Listed as corrosion resistant.
4 FM Approved as corrosion resistant.

F_111420 Rev 03 April 2023
Page 6 of 9
TECHNICAL DATA SHEET VK3522 Quick Response
Pendent Sprinkler K8.0 (115)
5.3 FM Approval Requirements and Details
The sprinkler is FM Approved as quick response Non–Storage pendent sprinkler as indicated in the FM Approval
Guide. The sprinkler is also approved for use in FM Approved vacuum dry sprinkler systems with a maximum
supervisory vacuum pressure of –3 psi (–207 mbar). FM Global Loss Prevention Data Sheets contain guidelines
relating to, but not limited to: minimum water supply requirements, hydraulic design, ceiling slope and obstructions,
minimum and maximum allowable spacing, and deflector distance below the ceiling. For specific application and
installation requirements, refer to the latest applicable FM Loss Prevention Data Sheets (including Data Sheet 2–0).
NOTE: The sprinkler is only FM Approved for retrofit, and not for new installations.
5.4 Additional Approval Requirements and Details
Refer to Table 5.1 for approved configurations allowed by each of the following approvals.
• CE CPR: Standard EN 12259-1:1999 +A3:2006; Declaration of Performance DOP_XT1A.
• LPCB: Standard EN 12259-1:1999 +A3:2006; Certificate Number 096m.
• VdS: Standard EN 12259-1:1999 +A3:2006; Certificate Number G 422010.
• UKCA: Standard EN12259-1:1999 +A3:2006; Declaration of Conformity UKCA DOC_S5048.
• MED: Standard EN 12259-1:1999 +A3:2006; Declaration of Conformity DOC_MED_XT1.
For specific application and installation requirements, refer to the latest applicable governmental codes, ordinances,
and standards for the installation location.
5.5 Corrosion Resistant Coatings
The corrosion resistant coatings have passed the standard corrosion tests required by the approving agencies and are
listed and approved as indicated in Table 5.1. These tests do not represent all possible corrosive environments. The
Electro-less Nickel PTFE (ENT) finish passed the UL 199 thirty day corrosion test and is cULus listed and FM
Approved as corrosion resistant. For automatic sprinklers, the ENT coating is applied to all exposed exterior surfaces,
including the waterway.
Prior to installation, verify that the coatings are compatible with, or suitable for, the proposed environment. The ENT
finish has not been evaluated for environments containing chlorine, such as indoor swimming pools. It is not
recommended for these applications.
5.6 Sprinkler Guards and Water Shields
The sprinkler is approved for use with the Model XG Sprinkler Guard and the Model F-1 water shield. Refer to the
Guards and Water Shields for XT1 Sprinklers technical data sheet for more information.
5.7 Escutcheons
The sprinkler is approved for use with various styles of Viking escutcheons. Specific installation dimensions apply that
must be observed. Refer to the sprinkler's Handling and Installation instructions for more information.
5.8 Available Temperature Ratings
Viking sprinklers are available in several temperature ratings that relate to a specific temperature classification.
Applicable installation rules mandate the use and limitations of each temperature classification. In selecting the
appropriate temperature classification, the maximum expected ceiling temperature must be known. When there is
doubt as to the maximum temperature at the sprinkler location, a maximum-reading thermometer should be used to
determine the temperature under conditions that would show the highest readings to be expected. In addition,
recognized installation rules may require a higher temperature classification, depending upon sprinkler location,
occupancy classification, commodity classification, storage height, and other hazards. In all cases, the maximum
expected ceiling temperature dictates the lowest allowable temperature classification. Sprinklers located immediately
adjacent to a heat source may require a higher temperature rating.

F_111420 Rev 03 April 2023
Page 7 of 9
TECHNICAL DATA SHEET VK3522 Quick Response
Pendent Sprinkler K8.0 (115)
6. ORDERING PROCEDURE
6.1 Sprinkler
1. Choose a sprinkler base part number with the required thread size and listing or approval (refer to section 5):
2. Add the suffix for the desired finish.
3. Add the suffix for the desired temperature rating.
NOTE: For Polyester, insert the desired temperature rating suffix where the dash (–) is shown.
EXAMPLE: 23874MB/W = VK3522 with white polyester finish and 155 °F (68 °C) nominal temperature rating. This
sprinkler is to be installed into an area with a maximum ambient temperature of 100 °F (38 °C).
1. Sprinkler Base
Part Number 2. Finish 3. Temperature Rating
See Section 5 Description Suffix
Nominal
Temperature
Rating
Bulb
Color
Maximum
Ambient
Ceiling
Temperature
Suffix
23874 1/2" NPT Brass A 135 °F (57 °C) Orange 100 °F (38 °C) A
23886 15 mm BSPT Chrome F 155 °F (68 °C) Red 100 °F (38 °C) B
White Polyester M–/W 175 °F (79 °C) Yellow 150 °F (65 °C) D
Black Polyester M–/B 200 °F (93 °C) Green 150 °F (65 °C) E
ENT JN 286 °F (141 °C) Blue 225 °F (107 °C) G
OPEN — — Z

F_111420 Rev 03 April 2023
Page 8 of 9
TECHNICAL DATA SHEET VK3522 Quick Response
Pendent Sprinkler K8.0 (115)
6.2 Sprinkler Accessories
NOTE: Images not to scale.
Figure – 4: Sprinkler Accessories
Image Reference Part Number Description
1) 23559MB Straight wrench: required for proper installation
2) 23560MB Recessed socket wrench
3) 01724A Sprinkler cabinet: holds up to 6 sprinklers
4) 01725A Sprinkler cabinet: holds up to 12 sprinklers (not shown)
5) 06419A Model E-1 Slip-on style recessed escutcheon
07902 Model E-1 Slip-on style recessed escutcheon (stainless steel)
6) 11038 Model E-2 Threaded recessed escutcheon
7) 18347 Model E-3 Threaded recessed escutcheon (large diameter outer cup)
8) 01960A Large standard flat surface mount escutcheon (steel)
09488 Large standard flat surface mount escutcheon (stainless steel)
9) 02960A Small standard flat surface mount escutcheon (steel)
07526 Small standard flat surface mount escutcheon (stainless steel)
10) 01961B Large standard raised surface mount escutcheon (brass)
1
56
910
7
8
23 4

F_111420 Rev 03 April 2023
Page 9 of 9
TECHNICAL DATA SHEET VK3522 Quick Response
Pendent Sprinkler K8.0 (115)
7. CONTACT
The sprinkler and accessories are available through Viking distributors only. Contact your local Viking sales office
which can be found on our website:
Americas and Asia: www.vikinggroupinc.com/locations OR Europe, Middle East, Africa (EMEA):
www.viking-emea.com/contact
Manufacturer: Importer EU: Asia Pacific (APAC) Main Office:
The Viking Corporation
5150 Beltway SE
Caledonia, MI 49316
Tel.: [phone]
Fax: [phone]
Technical Services: 1–877–384–5464
[email protected]
Viking S.A.
21, Z.I, Haneboesch
L–4562 Differdange / Niederkorn
Tel.: [phone] – 1
Fax: [phone]
vikinglux@viking–emea.com
The Viking Corporation (Far East) Pte. Ltd.
69 Tuas View Square
Westlink Techpark, Singapore 637621
Tel: [phone]
Fax: [phone]
vikingAP[email protected]

F_030722 Rev 01 August 25, 2022
Handling and Installation
Instructions
Page 1 of 6
Handling and Installation
Instructions
Model XT-1 Pendent
Sprinklers
1. PRODUCT IDENTIFICATION
This document covers the following products, hereafter referred to as “sprinkler”:
• VK1021 Standard Response Pendent Sprinkler K5.6 (80.6)
• VK2021 Standard Response Pendent Sprinkler K8.0 (115)
• VK2022 Standard Response Pendent Sprinkler K8.0 (115)
• VK3021 Quick Response Pendent Sprinkler K5.6 (80.6)
• VK3521 Quick Response Pendent Sprinkler K8.0 (115)
• VK3522 Quick Response Pendent Sprinkler K8.0 (115)
2. OTHER APPLICABLE DOCUMENTS
For intended use and relevant conditions for the safe use of the specific sprinkler refer to the appropriate Te c h n ic a l
Data Sheet.
bg
Инсталирайте ипуснете продукта вексплоатация
само ако следната инструкция еясно разбрана.
lv
Produkta iemontēšanu un ekspluatācijas sākšanau
veikt tikai tad, ja dotāinstrukcija ir pilnībāsaprasta.
cs
Namontujte a spusťte do provozu produkt pouze
tehdy, když jste jasněpochopili tento návod.
lt
Produktąmontuokite ir pradėkite eksploatuoti tik
tuomet, jei aiškiai suprantate šiąinstrukciją.
de
Du må kun montere og idriftsætte produktet, hvis du
har forstået følgende vejledning til fulde.
mt
Installa u ħaddem il-prodott biss jekk l-istruzzjonijiet li
ġejjin jinftiehmu b'mod ċar.
de
Produkt nur einbauen und in Betrieb nehmen, wenn
die nachfolgende Anleitung klar verstanden wird.
nl
Product alleen installeren en in gebruik nemen, als
de volgende instructies begrepen zijn.
el
Ηεγκατάσταση και θέση σε λειτουργία του προϊόντος
επιτρέπονται μόνο εάν οι ακόλουθες οδηγίες έχουν
γίνει κατανοητές.
no
Ikke installer og ta i bruk produktet uten at følgende
anvisninger er tydelig forstått.
en
Do not install and commission the product unless you
have clearly understood the instructions below.
pl
Produkt należy montowaći uruchamiaćtylko wtedy,
gdy poniższe instrukcje sąw pełni zrozumiałe.
es
Instalar el producto y ponerlo en funcionamiento solo
cuando se hayan comprendido claramente las
siguientes instrucciones.
pt
Instalar e colocar o produto em funcionamento
somente se as instruções a seguir forem claramente
compreendidas.
et
Paigaldage toode ja kasutage seda ainult siis, kui
saate alljärgnevast juhendist selgelt aru.
ro
Montați produsul și puneți-l în funcțiune numai dacă
instrucțiunea următoare este înțeleasăclar.
fi
Tuotteen saa asentaa ja ottaa käyttöön vain, jos
jäljempänä oleva ohje ymmärretään selvästi.
ru
Не устанавливайте ине принимайте
оборудование вэксплуатацию, если вы четко не
поняли инструкции ниже
fr
N'installer et ne mettre en service le produit que si les
instructions suivantes ont été clairement comprises.
sk
Namontujte a spustite do prevádzky výrobok iba
vtedy, pokiaľste jasne pochopili tento návod.
ga
Ná déan an táirge a shuiteail agus a choimisiunu
mura dtuigeann tu na treoracha thios go soileir.
sl
Izdelek vgradite in zaženite samo, če ste dobro
razumeli navodila v nadaljevanju.
hr
Ne instalirajte i ne puštajte proizvod u rad ako niste
jasno razumjeli donje upute.
sr
Не инсталирајте ине пуштајте производ урад ако
нисте јасно разумели упутства унаставку.
hu
Csak akkor építse be a terméket és helyezze
üzembe, ha a következőútmutatót egyértelműen
megértette.
sv
Montera och driftsätt produkten endast om du förstår
den efterföljande instruktionen.
ls
Settu ekki upp eða taktu vöruna í notkun nema þú
hafir skilið greinilega leiðbeiningarnar hér að neðan.
tr
Aşağıdaki talimatlarıaçıkça anlamadan ürünü
kurmayın ve devreye almayın.
it
Montare il prodotto e metterlo in funzione solo se si
sono comprese appieno le seguenti istruzioni.

F_030722 Rev 01 August 25, 2022
Page 2 of 6
Handling and Installation
Instructions
Model XT-1 Pendent
Sprinklers
3. TRANSPORT AND HANDLING
WARNING
!
A damaged or compromised sprinkler poses the risk of fatal consequences.
Damaged or compromised sprinklers will not operate properly which could lead to loss of life.
• NEVER use a sprinkler that has been exposed to temperatures exceeding the maximum allowed ambient
temperature.
• NEVER use a sprinkler with a loss of liquid from the glass bulb or damage to the fusible element. A small bubble
should be visible within the glass bulb; rotate the sprinkler to a horizontal position while observing the bulb to see
the bubble.
• NEVER use a sprinkler that has been dropped or damaged.
• ALWAYS Protect the sprinkler from mechanical damage during storage, transport, and handling.
• NEVER use sprinklers that have been painted by anyone other than the manufacturer.
• ALWAYS protect sprinklers from being painted during installation or replacement in accordance with the installation
standards.
• NEVER clean sprinklers with anything other than 7 psi or lower compressed air.
• NEVER apply soap, water, ammonia, adhesives, solvents or any other fluids on sprinklers.
• Destroy every damaged or compromised sprinkler.
NOTICE
Protect sprinklers during transport and handling.
• ALWAYS handle the sprinkler with care.
• ALWAYS keep the protective cap on the sprinkler during transport and handling.
• NEVER remove the protective cap until the fire sprinkler system is placed in service and the potential for mechanical
damage no longer exists.
• ALWAYS protect the sprinkler from direct sunlight during transport and handling.
• ALWAYS store sprinkler in a cool, dry, protected area.
• ALWAYS use original manufacturer’s shipping containers.
• NEVER store a sprinkler loose in a box, bin, bucket, or other type of container.
• ALWAYS keep the sprinkler separated from other sprinklers.
• NEVER allow metal parts to contact the sprinkler operating elements.
NOTE: If the glass bulb included on the sprinkler has been exposed to ultraviolet light, the color inside the bulb
may fade. This color change does not affect the operation of the sprinkler.

F_030722 Rev 01 August 25, 2022
Page 3 of 6
Handling and Installation
Instructions
Model XT-1 Pendent
Sprinklers
4. INSTALLATION
WARNING
!
Installation by insufficiently qualified personnel poses the risk of fatal consequences.
• This sprinkler must be installed properly by qualified personnel familiar with safe practices and applicable and
recognized design and installation standards issued, for example, by NFPA, FM, VdS, or LPCB, and trained how to
properly perform the installation procedures.
WARNING
!
Incorrect recessed installation poses the risk of fatal consequences.
• For recessed applications, this sprinkler must be installed according to the dimensions shown in Figure 1.
CAUTION
!
Cutting Hazard.
Sprinklers, accessories, cabinets, and packaging can have sharp edges that can cause cuts.
• Wear appropriate personal protective equipment (gloves) while handling product.
Figure – 1 Installation Dimensions with Viking Escutcheons

F_030722 Rev 01 August 25, 2022
Page 4 of 6
Handling and Installation
Instructions
Model XT-1 Pendent
Sprinklers
Optional Guards, Shields, and Escutcheons: If the sprinkler shall be installed together with a guard, shield, or
escutcheon refer to the applicable documents for the products used.
1. Install all required piping in the intended installation location.
2. Verify that the sprinkler model/style, K-factor, temperature rating, and response characteristics are appropriate for
the intended installation location. See Table 1 and Figure 5.
3. Inspect the sprinkler for damage. Destroy every damaged or compromised sprinkler.
The following are examples in which sprinklers are considered damaged or compromised. Replace the sprinkler in
the following cases:
• Sprinkler with a loss of fluid from the glass bulb or damage to the fusible element.
• Sprinklers that have been field painted, caulked, or mechanically damaged.
• Sprinklers showing signs of corrosion.
4. Verify that the sprinkler is protected with the protective cap or clip.
5. Apply a small amount of pipe-joint compound or tape to the external threads of the sprinkler only. Do not allow a
build-up of compound inside the sprinkler inlet (Figure 2).
Figure – 2
6. If applicable, Install the escutcheon on the sprinkler threads.
7. NOTICE: Do not use the deflector to start threading the sprinkler into a fitting. Use ONLY the approved
wrench to install the sprinkler. Refer to the sprinkler’s Technical Data Sheet.
a) For recessed sprinkler wrench (Figure 3a): Carefully slide the wrench sideways around the protective cap
and push upwards to engage with the sprinkler wrench flats.
b) For the standard sprinkler wrench (Figure 3b): Carefully slide the wrench onto the sprinkler wrench flats.
Figure – 3

F_030722 Rev 01 August 25, 2022
Page 5 of 6
Handling and Installation
Instructions
Model XT-1 Pendent
Sprinklers
8. NOTICE: Over-tightening the sprinkler can cause permanent damage. For 1/2" NPT (or 15 mm BSPT)
sprinkler, tighten up to a maximum torque of 14 ft-lbs (19 Nm). For 3/4" NPT (or 20 mm BSPT) sprinkler,
tighten up to a maximum of 20 ft-lbs (27,1 Nm).
Tighten the sprinkler as necessary (Figure 4a and 4b). If applicable, install a sprinkler guard and water shield.
Figure – 4
9. NOTICE: Sprinkler protective caps/clips must be removed from the sprinkler before placing the system in
service. Test the entire sprinkler system.
Refer to the applicable system documentation, regulations, and standards to ensure compliance.
Table 1: Sprinkler Markings
Ref Parameter
A Response type
Figure – 5
B Listings and approvals
C Sprinkler type
D Manufacture date
E Nominal temperature rating
F Manufacturer’s Sprinkler Identification Number (SIN)

F_030722 Rev 01 August 25, 2022
Page 6 of 6
Handling and Installation
Instructions
Model XT-1 Pendent
Sprinklers
5. CONTACT
The sprinkler and accessories are available through Viking distributors only. Contact your local Viking sales office
which can be found on our website:
Americas and Asia: www.vikinggroupinc.com/locations OR Europe, Middle East, Africa (EMEA):
www.viking-emea.com/contact
Manufacturer: Importer EU: Asia Pacific (APAC) Main Office:
The Viking Corporation
5150 Beltway SE
Caledonia, MI 49316
Tel.: [phone]
Fax: [phone]
Technical Services: 1–877–384–5464
[email protected]
Viking S.A.
21, Z.I, Haneboesch
L–4562 Differdange / Niederkorn
Tel.: [phone] – 1
Fax: [phone]
vikinglux@viking–emea.com
The Viking Corporation (Far East) Pte. Ltd.
69 Tuas View Square
Westlink Techpark, Singapore 637621
Tel: [phone]
Fax: [phone]
vikingAP[email protected]

F_031022 Rev 01 August 25, 2022
Operation and Maintenance
Instructions
Page 1 of 3
Operation and Maintenance
Instructions Model XT-1 Sprinklers
1. PRODUCT IDENTIFICATION
This document covers the following product, hereafter referred to as “sprinkler”
(SR=Standard Response, QR=Quick Response):
• VK1001 SR Upright Sprinkler K5.6 (80.6)
• VK2001 SR Upright Sprinkler K8.0 (115)
• VK2002 SR Upright Sprinkler K8.0 (115)
• VK3001 QR Upright Sprinkler K5.6 (80.6)
• VK3501 QR Upright Sprinkler K8.0 (115)
• VK3502 QR Upright Sprinkler K8.0 (115)
• VK1021 SR Pendent Sprinkler K5.6 (80.6)
• VK2021 SR Pendent Sprinkler K8.0 (115)
• VK2022 SR Pendent Sprinkler K8.0 (115)
• VK3021 QR Pendent Sprinkler K5.6 (80.6)
• VK3521 QR Pendent Sprinkler K8.0 (115)
• VK3522 QR Pendent Sprinkler K8.0 (115)
• VK1181 SR Conventional Sprinkler K5.6 (80.6)
• VK1201 SR Conventional Sprinkler K8.0 (115)
• VK1202 SR Conventional Sprinkler K8.0 (115)
• VK3101 QR Conventional Sprinkler K5.6 (80.6)
• VK3541 QR Conventional Sprinkler K8.0 (115)
• VK3542 QR Conventional Sprinkler K8.0 (115)
WARNING
!
Cancer and Reproductive Harm www.P65Warning.ca.gov
2. OTHER APPLICABLE DOCUMENTS
For intended use and relevant conditions for the safe use of the specific sprinkler, refer to the appropriate Technical
Data Sheet. In case an installed sprinkler needs to be replaced, refer to the appropriate Handling and Installation
Instructions for the installation of the new sprinkler.
3. MAINTAINING OPERATIONAL READINESS
Functionality
During fire conditions, the operating element fuses or shatters (depending on the type of sprinkler), releasing the pip
cap and sealing assembly. Water flowing through the sprinkler orifice strikes the sprinkler deflector, forming a uniform
spray pattern to control or extinguish the fire.
WARNING
!
This section contains important safety information. Read and follow all information.
Damaged or Compromised Sprinklers
Damaged or compromised sprinklers will not operate properly which could lead to loss of life.
• NEVER clean, paint, or caulk sprinklers.
• NEVER apply soap, water, ammonia, adhesives, solvents or any other fluids on sprinklers.
• NEVER expose sprinklers to temperatures exceeding the maximum allowed ambient ceiling temperature. See the
Technical Data Sheet.
• ALWAYS replace a compromised or damaged sprinkler.
• NEVER attempt to repair or reassemble a sprinkler.
• ALWAYS replace operated sprinklers and cover assemblies and sprinklers exposed to corrosive products of
combustion.
• Replacement of sprinklers must only be performed following the instructions in section 4.
The following are examples in which sprinklers are considered damaged or compromised. Replace the sprinkler in the
following cases:
• Sprinkler with a loss of fluid from the glass bulb or damage to the fusible element.
• Sprinklers or cover plate assemblies that have been field painted, caulked, or mechanically damaged.
• Sprinklers showing signs of extraordinary corrosion.

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Operation and Maintenance
Instructions Model XT-1 Sprinklers
Obstructions and obstacles
Obstructions and obstacles may compromise sprinkler discharge patterns which are critical for proper fire protection.
• NEVER attach items to sprinklers or hang items from the ceiling in an area protected with sprinklers.
• NEVER install walls in areas protected with sprinklers without having a specialized company verifying the design of
the sprinkler system.
• ALWAYS remove obstructions and obstacles to sprinkler spray patterns.
Sprinkler systems that have been subjected to a fire
Sprinkler systems that have been subjected to a fire must be returned to service as soon as possible.
• After an event of fire, the entire sprinkler system must be inspected for damage and repaired as necessary.
• Refer to the minimum requirements of the Authority Having Jurisdiction for replacement of sprinklers.
• Consider the employment of a fire patrol as long as the sprinkler system is out of service.
Inspections and testing
The owner is responsible for having the sprinklers inspected and tested according to standards of the applicable
approval body and to the requirements of the Authority Having Jurisdiction to maintain proper operating condition of the
system.
• Sprinklers must be inspected on a regular basis for corrosion, mechanical damage, obstructions, paint, etc.
Frequency of inspections may vary due to corrosive atmospheres, water supplies, and activity around the sprinkler.
The applicable approval body or Authority Having Jurisdiction may require sprinklers to be replaced after a specified
term of service.
• Refer to the standards of the applicable approval body, such as NFPA, FM, VdS, or LPCB, and the requirements of
the Authority Having Jurisdiction for detailed inspection, testing and replacements requirements.
Sprinklers removed from the system for testing or for any other purpose must be replaced according to section 4.
4. REMOVAL AND REPLACEMENT
WARNING
!
Removal and replacement of sprinklers by insufficiently qualified personnel poses the risk of fatal consequences in case
of fire.
• Removal or replacement of sprinklers must be performed by qualified personnel familiar with safe practices and
applicable and recognized design and installation standards issued, for example, by NFPA, FM, VdS, or LPCB, and
trained how to properly perform the installation procedures.
WARNING
!
Removal and replacement of sprinklers will temporarily eliminate the fire protection capabilities of the sprinkler system.
• Consider the employment of a fire patrol in the affected area.
• Prior to proceeding, notify all Authorities Having Jurisdiction.

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Operation and Maintenance
Instructions Model XT-1 Sprinklers
WARNING
!
Re-installation of a removed sprinkler may compromise the operational safety of the sprinkler system.
• NEVER reinstall a removed sprinkler.
• ALWAYS use new sprinklers for replacement.
1. Select new sprinklers with identical performance characteristics as well as respective accessories such as
escutcheons, cover plates, and protective caps. A stocked spare sprinkler cabinet may be provided for this
purpose on site.
2. According to appropriate system description and/or valve instructions, remove the system from service, drain all
water, and relieve all pressure on the piping.
3. Only for flush and concealed style sprinklers: Remove the ceiling ring or cover plate assembly of the old sprinkler
by gently unthreading or pulling it off the sprinkler body (depends on the sprinkler model used).
4. Use the proper sprinkler wrench for the old sprinkler according to its Technical Data Sheet.
5. Only for flush and concealed style sprinklers, but not for domed concealed sprinklers: Replace the plastic
protective cap over the old sprinkler and fit the wrench over the cap.
6. Use the wrench to remove the old sprinkler by turning it counterclockwise to unthread it from the piping.
7. Install the new sprinkler by following its Handling and Installation Instructions.
8. Place the system back in service and secure all valves.
9. Check for and repair all leaks.
5. DISPOSAL
At end of use the product described here should be disposed of via the national recycling system.
6. CONTACT
The sprinkler and accessories are available through Viking distributors only. Contact your local Viking sales office
which can be found on our website:
Americas and Asia: www.vikinggroupinc.com/locations OR Europe, Middle East, Africa (EMEA):
www.viking-emea.com/contact
Manufacturer: Importer EU: Asia Pacific (APAC) Main Office:
The Viking Corporation
5150 Beltway SE
Caledonia, MI 49316
Tel.: [phone]
Fax: [phone]
Technical Services: 1–877–384–5464
[email protected]
Viking S.A.
21, Z.I, Haneboesch
L–4562 Differdange / Niederkorn
Tel.: [phone] – 1
Fax: [phone]
vikinglux@viking–emea.com
The Viking Corporation (Far East) Pte. Ltd.
69 Tuas View Square
Westlink Techpark, Singapore 637621
Tel: [phone]
Fax: [phone]
vikingAP[email protected]