Viking MIRAGE VK462 - User Manual

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MIRAGE

STANDARD AND

QR CONCEALED PENDENT

SPRINKLER VK462 AND HP

SPRINKLER VK463 (K5.6)

TECHNICAL DATA

Form No. F_103005 21.08.14 Rev 21.1

Page 1 of 7

The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058

Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com

Visit the Viking website for the latest edition of this technical data page www.vikinggroupinc.com

1. DESCRIPTION

Viking Mirage

Standard and Quick Response Concealed Pendent Sprinkler VK462

and HP Sprinkler VK463 are thermosensitive glass-bulb spray sprinklers designed for

installation on concealed pipe systems where the appearance of a smooth ceiling is

desired.

The sprinkler is pre-assembled with a threaded adapter for installation with a low-

profile cover assembly that provides up to ½” (12.7 mm) of vertical adjustment. The

two-piece design allows installation and testing of the sprinkler prior to installation of

the cover plate. The “The “push-on” and “thread-on” designs of the concealed cover

plate assemblies allow easy installation of the cover plate after the system has been

tested and the ceiling finish has been applied. The cover assembly can be removed

and reinstalled, allowing temporary removal of ceiling panels without taking the sprinkler

system out of service or removing the sprinkler. The Electroless Nickel PTFE (ENT)

coating has been investigated for installation in corrosive environments and is listed and

approved as indicated in the Approval Charts. The ENT finish is only available for the

sprinkler assembly, the cover plate is not plated.

2. LISTINGS AND APPROVALS

cULus Listed: Category VNIV

FM Approval: Class 2015

NYC Approved: MEA 89-92-E, Volume 32

VdS Approved: Certificate G4080021

LPCB Approved: Ref. No. 096e/12

CE Certified: Standard EN 12259-1, EC-certificate of conformity 0832-CPD-2032

China Approval: Approved according to China GB Standard

Refer to the Approval Charts and Design Criteria listing and approval requirements that must be followed.

3. TECHNICAL DATA

Specifications:

Available since 2006.

Minimum Operating Pressure: 7 psi (0.5 bar)*

Maximum Working Pressure: Sprinkler VK463 is rated for use with water working pressures ranging from the minimum

7 psi (0.5 bar) up to 250 psi (17.2 bar) for high-pressure systems. High-pressure (HP) sprinklers can be identified by

locating “250” stamped on the deflector. Sprinkler VK462 is rated to a maximum 175 psi (12 bar) wwp.

Factory tested hydrostatically to 500 psi (34.5 bar)

Thread size: 1/2” (15 mm) NPT

Nominal K-Factor: 5.6 U.S. (80.6 metric

**)

Glass-bulb fluid temperature rated to -65°F (-55°C)

Patents Pending

* cULus Listing, FM Approval, and NFPA 13 installs require a minimum of 7 psi (0.5 bar). The minimum operating pressure for LPCB and CE Approvals

ONLY is 5 psi (0.35 bar).

** Metric K-factor measurement shown is when pressure is measured in Bar. When pressure is measured in kPa, divide the metric K-factor shown by 10.0.

Material Standards:

Sprinkler Body: Brass UNS-C84400

Deflector: Copper UNS-C19500 for Sprinkler; Phosphor Bronze UNS-C51000 for Sprinkler VK463

Deflector Pins: Stainless Steel Alloy

Bulb: Glass, nominal 3 mm diameter

Pip Cap and Insert Assembly: Copper UNS-C11000 and Stainless Steel UNS-S30400

Button: Brass UNS-C36000

Screws: 18-8 Stainless Steel

Belleville Spring Sealing Assembly: Nickel Alloy, coated on both sides with PTFE Tape

Yoke: Phosphor Bronze UNS-C51000

Cover Adapter: Cold Rolled Steel UNS-G10080, Finish: Clear Chromate over Zinc Plating

Cover Assembly Materials:

Cover: Copper UNS-C11000 or Stainless Steel UNS-S30400

Base: Brass UNS-C26000 or UNS-C26800

Springs: Nickel Alloy

Solder: Eutectic

Ordering Information: The sprinkler and cover plate must be ordered separately. Refer to Tables 1 and 2.



Replaces Form No. F_103005 Rev 20.3

(Revised VdS Approval requirements.)

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Do you have a question about the Viking MIRAGE VK462 and is the answer not in the manual?

The Viking Mirage® Standard and QR Concealed Pendent Sprinklers VK462 and HP Sprinkler VK463 (K5.6) are fire protection devices designed to activate and distribute water in a specific pattern to extinguish or control fires. These sprinklers are available in various models and styles, offering flexibility for different installation requirements and aesthetic preferences.

Function Description:

Viking fire sprinklers consist of a threaded frame, a specific waterway or orifice size, and a deflector. A closed or sealed sprinkler includes a thermosensitive operating element that activates at a predetermined temperature, releasing water. An open sprinkler, conversely, does not use an operating element and is open at all times, relying on a separate detection system for water release. The primary function is to distribute water in a controlled spray pattern to suppress fires.

The Mirage® concealed pendent sprinklers are designed for aesthetic integration into ceilings. They feature a cover plate assembly that conceals the sprinkler until activation. The cover plate is held in place by a fusible element that detaches when exposed to sufficient heat, allowing the sprinkler to drop down and activate. The cover plate assembly consists of a cover plate, a support cup, and a fusible element. The cover plate is available in various finishes and temperature ratings to match interior designs and environmental conditions.

Important Technical Specifications:

Sprinkler Models: VK462 (Standard and QR Concealed Pendent) and VK463 (HP Sprinkler).
K-Factor: Nominal K-factor of 5.6 (U.S.) or 80.6 (metric) for both VK462 and VK463. The K-factor is a tapered waterway, and the nominal U.S. K-factors are provided in accordance with the 1999 edition of NFPA 13, Section 3-2.3.
Thread Size: 1/2" NPT (15 mm) for both VK462 and VK463.
Maximum Water Working Pressure:
- VK462: 175 psi (12 bar) for both Standard and Quick Response applications.
- VK463: 250 psi (17.2 bar) for both Standard and Quick Response applications.
Temperature Ratings:
- Sprinkler Nominal Ratings: 155 °F (68 °C), 175 °F (79 °C), 200 °F (93 °C).
- Cover Plate Nominal Ratings:
  - UL: 135 °F (57 °C) (Ordinary classification, corresponds to 155 °F/68 °C sprinkler).
  - FM: 139 °F (59 °C) (Ordinary classification, corresponds to 155 °F/68 °C sprinkler).
  - 165 °F (74 °C) (Intermediate classification, corresponds to 175 °F/79 °C or 200 °F/93 °C sprinkler).
Maximum Ambient Ceiling Temperature:
- 100 °F (38 °C) for 135 °F/57 °C cover plate (155 °F/68 °C sprinkler).
- 150 °F (65 °C) for 165 °F/74 °C cover plate (175 °F/79 °C or 200 °F/93 °C sprinkler).
Cover Plate Dimensions:
- Thread-On Style: 2-3/4" (70 mm) round (Base Part 23190) and 3-5/16" (84 mm) round (Base Part 23174) or square (Base Part 23179). Stainless steel versions are also available: 2-3/4" (70 mm) round (Base Part 23193) and 3-5/16" (84 mm) round (Base Part 23183).
- Push-On Style: 2-3/4" (70 mm) round (Base Part 23447) and 3-5/16" (84 mm) round (Base Part 23463) or square (Base Part 23482). Stainless steel versions are also available: 2-3/4" (70 mm) round (Base Part 23455) and 3-5/16" (84 mm) round (Base Part 23473).
Cover Plate Finishes: Polished Chrome, Brushed Chrome, Bright Brass, Antique Brass, Brushed Brass, Brushed Copper, Painted White, Painted Ivory, Painted Black. Stainless Steel versions are not available with finishes or paint. Custom colors are available and indicated by a label inside the cover assembly.
Approvals: cULus Listed, NYC Approved, VdS Approved, CE Certified, LPCB Approved, and China GB Standard Approved.
Corrosion Resistance: Some models are available with corrosion-resistant coatings or are fabricated from non-corrosive material. Specific models (e.g., 13503JN, 13667JN) are cULus Listed as corrosion resistant. Wax-coated sprinklers are available for enhanced corrosion resistance, with specific wax part numbers and melting points.

Usage Features:

Concealed Design: The concealed design allows the sprinkler to blend seamlessly with the ceiling, providing an aesthetically pleasing solution for fire protection. The cover plate is designed to be flush with the ceiling.
Quick Response (QR) and Standard Response (SR) Options: Both quick response and standard response models are available, allowing selection based on specific fire protection requirements and occupancy classifications. Quick response sprinklers are designed to activate faster than standard response sprinklers, which can be critical in certain applications.
Pendent Installation: These sprinklers are designed for pendent installation, meaning they hang down from the piping. The deflector is positioned below the frame to distribute water in a downward, umbrella-shaped spray pattern.
Installation Flexibility: The sprinklers are suitable for installation in neutral or negative pressure plenums only. VdS approval specifically prohibits installation in false ceilings where the void above contains a water-based active fire protection system.
Cover Plate Ordering: A clear ordering system is provided for cover plates, allowing users to select the base part number, desired finish, and required temperature rating. This ensures compatibility and proper aesthetic integration.
Installation Steps:
1. Prepare the sprinkler key.
2. Remove the plastic cover.
3. Hold the sprinkler with the wrench and fasten it.
4. Replace the plastic cover and do not remove until the cover is installed. The installation requires a 2-1/4" (57 mm) diameter opening in the ceiling. The sprinkler wrench (Part No. 14047W/B**) is specifically designed for installation, ensuring proper torque and preventing damage.
Residential Sprinklers: While the document primarily focuses on standard and QR concealed pendent sprinklers, it notes that residential sprinklers have a unique distribution pattern and fast-response operating element, designed for life safety. They should not be used to replace standard sprinklers unless specifically tested and approved by the Authority Having Jurisdiction.
Wax-Coated Sprinklers: For wax-coated sprinklers, a special sprinkler head wrench is required for installation to avoid damaging the wax coating. Wax is also available in bar form for touch-ups after installation to maintain corrosion resistance.

Maintenance Features:

Care and Handling: Sprinklers are fragile and must be handled with care during storage, transport, handling, and installation. They should be stored in a cool, dry place in their original shipping containers, separated to prevent metal parts from contacting operating elements.
Protective Shields and Caps: Many Viking sprinklers come with plastic protective caps or shields to temporarily cover operating elements, preventing mechanical damage. These shields/caps MUST be removed BEFORE placing the system in service and only after installation and ceiling finish work are complete. Removal should be done carefully, without tools, to avoid damaging the sprinkler.
Installation Tools: Only the designated sprinkler head wrench should be used for installation to prevent damage to the sprinkler. Over-tightening should be avoided.
Damage Prevention: Sprinklers that have been dropped, damaged, painted in the field, or exposed to temperatures exceeding their maximum ambient limit must be replaced. Cleaning sprinklers with soap, water, ammonia, or other cleaning fluids, or using adhesives/solvents on them, is prohibited.
Inspections, Tests, and Maintenance: Regular inspections, tests, and maintenance should be performed in accordance with NFPA 25 requirements. For wax-coated sprinklers, frequent inspections are necessary to verify the integrity of the corrosion-resistant coating.
Technical Data Access: Comprehensive technical data pages, installation instructions, and care and handling bulletins are available from Viking or its distributors and on the Viking website (www.vikinggroupinc.com). These resources provide detailed information for proper installation and maintenance.
Regulatory Warnings: The product includes regulatory and health warnings, particularly regarding chemicals known to cause cancer or reproductive harm in California (www.P65Warnings.ca.gov).