Grinnell F946 Quick Start Manual

CONCEALED SPRINKLER
MODEL F946 CLEANLINE, SOLDER TYPE, 1/2" ORIFICE
C
l"x 1/2
11
REDUCER
(TYPICAL INSTALLATION)
------1----
A (DIA.)---+------,
ENCLOSURE
Components: Dim. Inches MM
1-Enclosure Assembly A- 4 101.6
2-Mounting Plate 8- 3-3/8 85. 7
Assembly C-Min. 1 /4 6.3
3-Retaining Clip C-Nom. 3/8 9.5
4-Model F950 C-Max. 1 /2 12. 7
1/2" Orifice O-Nom. 1-7/8 47.6
Pendent Sprinkler E- 9/16 14.3
FIGURE A, MODEL F946 CLEANLINE SPRINKLER ASSEMBLY
and Appeals under Calendar Number
340-81-SA.
WARNING
The Model F946 Qeanline Sprinklers
described herein must be installed
and maintained in compliance with
this document, as well as with the ap-
plicable 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 integrity of this device.
The Model F946 aeanline Sprinklers
must not be used in applications where
the air pressure above the ceiling is
greater than that below. Downdrafts
thru the Enclosure could delay the
time to sprinkler operation in a fire
situation.
The owner is responsible for maintain-
ing his fire protection system and
devices in proper operating condition.
The installing contractor or manufac-
turer should be contacted relative to
any questions.
TECHNICAL DATA
The Model F946 Cleanline Sprinklers
are available in 165F/74C and 212F/ ______________________________ __. 100C temperature ratings. Their nom-
GENERAL DESCRIPTION
dard finishes for the Cover Plate are inal installation dimensions are given
The 1/2 inch orifice Model F946 satin chrome and painted white. Other in Figure A. The 1/2 inch orifice,
Cleanline Sprinklers (Ref. Figure A) painted finishes for the Cover Plate are natural brass finish F950 Pendent
are pendent automatic sprinl<:lers of available on "special" order. Sprinklers used in.the F946 assemblies
the fusible solder type. They are "stan- are described in Technical Data Sheet
dard sprinklers" and produce a hemi- TD517.
spherical water distribution pattern be-
low the deflector.
The separable two-piece design of the
Enclosure and Mounting Plate Assem-
blies allows installation of the sprink-
lers and pressure testing of the fire
protection system/evaluation of leak
tightness, prior to installation of a
suspended ceiling or application of the
finish coating to a fixed ceiling. They
also permit ·removal of suspended ceil-
ing panels for access to building service
equipment, without having to first
shut down the fire protection system
and remove sprinklers.
The Cover Plate has a subtle spherical
radius which tends to mask its depth
and blend with the ceiling for an aes-
thetically pleasing appearance. Stan-
Printed in U.S.A.
11-86
APPROVALS AND ST ANDA RDS
The 1/2 inch orifice Model F946
Cleanline Sprinklers are listed by
Underwriters Laboratories Inc. and
Underwriters' laboratories of Canada.
They are approved by Factory Mutual
Research Corporation for use in Light
Hazard occupancies, and by the Fire
Offices' Committee for use in Extra
Light Hazard as well as Ordinary Haz-
ard Groups I and 11 occupancies.
The laboratory listings and approvals
only apply to the temperature rnting
and finish combinations stated in ttie
Technical Data section.
The 1/2 inch orifice F946 Cleanline
Sprinklers are also approved by the
New York City Board of Standards
The following table summarizes the
maximum permissible ceiling tempera-
tures for use with the F946.
Sprinkler
Maximum Ceiling
Rating Temperature
165Fn4C 100F/38C
212F/100C 150F/66C
The Enclosure Assembly consists of a
Cover Plate which is soldered to an
Enclosure at three equidistant loca-
tions around their peripheries. The En-
closure and Cover Plate are brass per
ASTM 836(C26000 or C26800). A
small Ejection Spring of Type 302
stainless steel is mounted between the
flange of the Enclosure and the Cover
TD578