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Installation

Do not install the G5-56, G5-42 and G5-28 in ceilings which 

have positive pressure in the space above. 
•  Cut a 2

5

/

8

” inch (67mm) diameter hole is cut in the ceiling, the 

sprinkler is easily installed with the Model FC Wrench.  The 
wrench has a socket drive which is inserted into the body of 
the sprinkler.  When installing a sprinkler the wrench is first 
positioned into the sprinkler/cup assembly until the wrench 
socket engages the body of the sprinkler.  The sprinkler is 
then tightened into the pipe fitting.  When inserting or remov-
ing the wrench from the sprinkler/cup assembly, care should 
be taken to prevent damage to the sprinkler.  DO NOT 
WRENCH ON ANY OTHER PART OF THE SPRINKLER/
CUP ASSEMBLY.  Install the cover plate by hand turning the 
cover in the clockwise direction until it is tight against the ceil-
ing. 

A protective cap is provided to protect the drop-down sprinkler 
deflector from damage which could occur during construction 
before the cover plate is installed.  The cap is factory installed 
inside the sprinkler cup. Remove cap to install sprinkler, then re-
install cap until the cover plate is installed.

Maintenance

The Model G5-56, G5-42 and G5-28 should be inspected 

quarterly and the sprinkler system maintained in accordance 
with NFPA 25.  Do not clean sprinklers with soap and water, am-
monia or any other cleaning fluids. Remove any sprinkler that 
has been painted (other than factory applied) or damaged in 
any way.  Concealed sprinklers cover plates can not be painted 
in the field, after installation or have any other coating applied 
other than the factory finish. A stock of spare sprinklers should 
be maintained to allow quick replacement of damaged or oper-
ated sprinklers.  Prior to installation, sprinklers should be main-
tained in the original cartons and packaging to minimize the 
potential for damage to sprinklers that would cause improper 
operation or non-operation.

UL Listing Category 

Sprinklers, Automatic and 
Open
Quick Response Sprinkler

UL Guide Number

VNIV

Maximum Working Pressure

175 psi (12 bar)
100% Factory tested Hydrostatically to 500 psi (34.5 bar)

Temperature Rating

Classi

fi

 cation

Sprinkler 

Cover

Plate

Max. Ambient 

Temp.

Ordinary

165°F/74°C

135°F/57°C

100°F/38°C

Intermediate

212°F/100°C

165°F/74°C

150°F/66°C

Model FC Sprinkler Wrench

Ordering Information 

1. Sprinkler Model 
2. Nominal Orifice
3. Flat Cover Plate
    Plain or Perforated 
4. Flat Cover Plate 
    Assembly Finish 
5. Inlet Type

Cover Plate Finishes

(1)

Standard Finishes

Chrome
White Paint

Special Application
Finishes

(2)

Bright Brass
Finished Bronze
Black Plating
Black Paint
Off White
Satin Chrome

(1)

 Other finishes and colors are 

available on special order. 
Consult factory for details. 
Coverplate custom paint is 
semi-gloss, unless specified 
otherwise.

(2)

 For the perforated style cover-

plate, consult factory for avail-
ability on these and other cus-
tom finishes.

2.

Summary of Contents for G5-28

Page 1: ...ring an at tractive appearance and 3 4 19mm of cover adjustment for ease of installation The small diameter cover plate assem bly is easily attached and blends into the ceiling concealing the most dependable fire protection available an automatic sprinkler system The Model G5 56 G5 42 and G5 28 are designed for use where aesthetic appearance is important Offices hospitals motels and restaurants ar...

Page 2: ...uids Remove any sprinkler that has been painted other than factory applied or damaged in any way Concealed sprinklers cover plates can not be painted in the field after installation or have any other coating applied other than the factory finish A stock of spare sprinklers should be maintained to allow quick replacement of damaged or oper ated sprinklers Prior to installation sprinklers should be ...

Page 3: ...2 8 40 NPT R 1 2 RA3411 For VdS Approval temperature rating sprinkler 165 F 74 c and cover plate 135 F 57 C only Notice FOR USE AS A REPLACEMENT OF MODEL G4A SPRINKLERS NOTE 1 Testing has shown that use of a nipple extension will not affect the listing of the sprinkler 2 For RETROFIT installations per NFPA 13 2010 section 8 15 19 4 which allows the use of nipples as the same pipe thread size as th...

Page 4: ...throughout the United States Canada and foreign countries Automatic sprinklers Flush automatic sprinklers Recessed automatic sprinklers Concealed automatic sprinklers Adjustable automatic sprinklers Dry automatic sprinklers Intermediate level sprinklers Open sprinklers Spray nozzles Alarm valves Retarding chambers Dry pipe valves Accelerators for dry pipe valves Mechanical sprinkler alarms Electri...

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