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QUICK RESPONSE 

SPRINKLERS

GENERAL

 

CARE, INSTALLATION,

AND MAINTENANCE GUIDE

TECHNICAL DATA

May 19, 2006

Use only the special wrench designed 
for installing coated and recessed Viking 
sprinklers (any other wrench may dam-
age the unit). 
Use care when locating sprinklers near 
fixtures that can generate heat. Do 
not install sprinklers where they could 
be exposed to temperatures exceeding 
the maximum recommended ambient 
temperature for the temperature rating 
used.
Wet-pipe systems must be provided 
with adequate heat. Sprinklers supplied 
from dry systems in areas subject to 
freezing must be listed dry sprinklers, or 
upright or horizontal sidewall sprinklers 
installed so that water is not trapped. 
For dry systems, pendent sprinklers 
and sidewall sprinklers installed on re-
turn bends are permitted, where the 
sprinklers, return bend, and branch line 
piping are in an area maintained at or 
above 40 °F (4 °C).

6. INSTALLATION

WARNING:

 Viking sprinklers are manu-

factured and tested to meet the rigid re-
quirements of approving agencies. The 
sprinklers are designed to be installed in 
accordance with recognized installation 
standards. Deviation from the standards 
or any alteration to sprinklers or cover 
plate assemblies after they leave the 
factory including, but not limited to: 
painting, plating, coating, or modifica-
tion, may render them inoperative and 
will automatically nullify the approvals 
and any guarantee made by Viking.  

Viking sprinklers are to be installed 
in accordance with the latest edi-
tion of Viking technical data, the 
latest standards of NFPA, FM Global, 
LPCB, Assemblee Pleniere, VdS or 
other similar organizations, and also 
with the provisions of governmental 
codes, ordinances, and standards, 
whenever applicable. The sprinkler 
technical data page may contain 
installation requirements specific 
for the sprinkler model selected.
The use of quick response sprinklers 
may be limited due to occupancy 
and hazard. Refer to the Authority 
Having Jurisdiction prior to installa-
tion. NOTE: QR concealed sprinklers 
must be installed in neutral or nega-
tive pressure plenums only.

Before installation, be sure to have the 

1. PRODUCT NAME

Viking Quick Response Sprinklers  - 

 

General Care, Installation, and Mainte-
nance Guide

2. MANUFACTURER

THE VIKING CORPORATION
210 N. Industrial Park Road
Hastings, Michigan 49058 U.S.A.
Telephone: (269) 

945-9501

  

(877) 384-5464

Fax: (269) 

945-9599

e-mail: [email protected]

3. PRODUCT DESCRIPTION

Viking quick response sprinklers are 
thermosensitive spray sprinklers con-
sisting of a small frame and either a 
glass bulb or a fusible operating ele-
ment that meets the criteria for quick 
response. Available styles include pen-
dent, flush pendent, concealed pendent, 
concealed sidewall, upright, horizontal 
sidewall, flush horizontal sidewall, verti-
cal sidewall, or conventional (old style). 
Quick response sprinklers are avail-
able with various finishes, temperature 
ratings, and K-Factors to meet design 
requirements†. 

† Refer to the appropriate sprinkler technical 

data page for available styles, finishes, 
temperature ratings, and nominal K-Factors 
for specific sprinkler models. 

4. TECHNICAL DATA

Refer to the appropriate sprinkler tech-
nical data page for listing and approval 
information and technical information on 
sprinkler materials and accessories.

5. CARE AND HANDLING

(Also refer to Bulletin - Care and Handling of 
Sprinklers, Form No. F_091699.)

Sprinklers must be handled with care. 
They must be stored in a cool, dry 
place in their original shipping container. 
Never install sprinklers that have been 
dropped, damaged, or exposed to tem-
peratures exceeding the maximum am-
bient temperature allowed. Never install 
any glass-bulb sprinkler if the bulb is 
cracked or if there is a loss of liquid from 
the bulb. Any sprinkler with a loss of 
liquid from the glass bulb or damage to 
the fusible element should be destroyed 
immediately.
Sprinklers must be protected from me-
chanical damage. Sprinklers subject to 
mechanical damage must be protected 
with an approved sprinkler guard. 
Use only sprinklers listed as corrosion 
resistant when subject to corrosive en-
vironments. When installing corrosion-
resistant sprinklers, take care not to 
damage the corrosion-resistant coating. 

appropriate sprinkler model and style, 
with the correct orifice size, temperature 
rating, and response characteristics. 
Sprinklers must be installed after the 
piping is in place to prevent mechanical 
damage. Keep sprinklers with protective 
caps or bulb shields contained within 
the caps or shields during installation 
and testing, and any time the sprinkler 
is shipped or handled.
A1. For frame-style sprinklers, install es-

cutcheon (if used), which is designed 
to thread onto the external threads of 
the sprinkler.* 

Refer to the appropriate sprinkler data page 
to determine approved escutcheons.

A2. 

For quick response flush and 

concealed style sprinklers: 

Cut the 

sprinkler nipple so that the ½” or 3/4” 
(15 mm or 20 mm)** NPT outlet of the 
reducing coupling is at the desired lo-
cation, and centered in the opening** 
in the ceiling or wall.

**Size depends on the sprinkler model used. 

Refer to appropriate sprinkler data page.

B. 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 of com-
pound in the sprinkler inlet. 

NOTE:

 Sprinklers with protective caps or 

bulb shields must be contained within 
the caps or shields before applying pipe-
joint compound or tape. 

Exception: For 

concealed sprinklers VK302, VK352, 
VK462, VK463, and VK464, remove 
the protective cap for installation. 

C. Refer to the appropriate sprinkler 

technical data page to determine the 
correct sprinkler wrench for the model 
of sprinkler used. DO NOT use the 
deflector or fusible element to start or 
thread the sprinkler into a fitting.
Install the sprinkler onto the piping 
using the special sprinkler wrench 
only, taking care not to over-tighten or 
damage the sprinkler operating parts.

For flush and concealed style sprin-
klers:

 the internal diameter of the 

special sprinkler installation wrench 
is designed for use with the sprinkler 
contained within the protective shell. 

Exception: For concealed sprinklers 
VK302, VK352, VK462, VK463, and 
VK464, remove the protective cap for 
installation, and then place it back on 
the sprinkler temporarily. 

Thread the 

quick response flush or concealed 
sprinkler into the ½” or 3/4” (15 mm 
or 20 mm)†† NPT outlet of the cou-
pling by turning it clockwise with the 
special sprinkler wrench.

††Thread size depends on the particular 

*

Note: Units of measure in parentheses may be approximations.

Form No. F_011500

Replaces page QR1-2, dated Jan. 16, 2006 (updated for new con-
cealed sprinklers). 

Refer to the appropriate sprinkler technical 

data page for detailed information on specific sprinkler models.

Sprinkler QR1

For Institutional Flush Style

Sprinklers, refer to the appropriate

institutional sprinkler technical data 

page for installation instructions.

OBSOLETE

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