General
Description
The Model G1 & G4 Sprinkler Guards
(Ref. Figure 1) are designed for use
with specific types of Series TY-B, TY-
FRB, TY-L, and TY-FRL Sprinklers that
may be located in areas that make
them susceptible to mechanical or
physical damage. Table A provides
compatibility details.
The Model G1/S1 & G4/S3 Sprinkler
Guards with Shields (Ref. Figure 2), in
addition to providing protection from
mechanical or physical damage,
shields the sprinkler from water spray
of higher elevation sprinklers (e.g.,
rack storage sprinkler installations).
When the G1/S1 and G4/S3 are used
with the Series TY-B, TY-FRB, TYL,
and TY-FRL Sprinklers shown in Table
A, the assemblies form Upright Inter-
mediate Level Sprinklers intended for
use in fire sprinkler systems designed
in accordance with the standard instal-
lation rules recognized by the applica-
ble Listing agency (i.e., UL Listing is
based on NFPA requirements).
The G1 and G4 are a redesignation for
the Gem F938 & F937, and the G1/S1
& G4/S3 are a redesignation for the
Gem F938/Q-76 and F937/Q-75.
WARNINGS
The Model G1 & G4 Sprinkler Guards
and G1/S1 & G4/S3 Sprinkler Guards
with Shields described herein must be
installed and maintained in compli-
ance with this document, as well as
with the applicable standards of the
National Fire Protection Association,
in addition to the standards of any
other authorities having jurisdiction.
Failure to do so may impair the integ-
rity of these devices.
The owner is responsible for maintain-
ing their fire protection system and de-
vices in proper operating condition.
The installing contractor or manufac-
turer should be contacted relative to
any questions.
Technical
Data
Approvals
UL and C-UL Listed. FM Approved.
(Refer to Table A)
Finishes
Red Painted and Zinc Chromate
Physical Characteristics
Welded assembly fabricated from
carbon steel
Design Criteria
In accordance with the requirements
of the NFPA, sprinkler guards shall be
listed. Guards are only listed for use
with specified sprinklers; therefore, the
G1, G4, G1/S1, and G4/S3 must only
be used with the Series TY-B, TY-FRB,
TY-L, and TY-FRL Sprinklers shown in
Table A.
Installation
The Models G1, G4, G1/S1, and
G4/S3 are to be installed as follows:
Step 1. TheG1,G4,G1/S1,orG4/S3
is to be mounted on the sprinkler after
the sprinkler has been installed in ac-
cordance with its applicable technical
data sheet.
Step 2. With the Clips loose, first
spread the two halves of the Sprinkler
Guard just enough to pass by the
sprinkler deflector from the side. Then,
once again spread the two halves of
the Sprinkler Guard just enough to
pass over the sprinkler “thread relief”
or “wrenching area”, as applicable,
portion of the sprinkler. (Refer to Table
A, as well as Figures 1 and 2.)
Step 3. With the Sprinkler Guard posi-
tionedonthe“thread relief” or
“wrenching area” portion of the
sprinkler, as applicable, engage the
Clips and then slide the Clips until they
Model G1 & G4 Sprinkler Guards
Model G1/S1 & G4/S3 Guards with Shields
Series TY-B, TY-FRB, TY-L, and TY-FRL Sprinklers
Page 1 of 4 TFP780
DECEMBER, 2003
Technical Services: Tel: (800) 381-9312 / Fax: (800) 791-5500
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