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REMODELING

When remodeling, such as by adding
false beams or light fixtures or chang-
ing the location of compartment walls,
first verify that the new construction
will not violate the installation require-
ments stated under WARNINGS. Alter
the new construction and/or the sprin-
kler system to suit the requirements of
this document.

ORDERING PROCEDURE

Orders for the Model F978 Designer
Residential Concealed Pendent Sprin-
klers must include the description and
Product Symbol Number (PSN) where
applicable.

Contact your local distributor for avail-
ability.

Sprinkler Assemblies:

Specify:    4.2 K-factor, 155°F/68°C,
Model F978 Residential Concealed
Pendent Sprinkler with (specify type
finish) Cover Plate, PSN (specify).

Painted White

Cover Plate . . . . . . . . . . . PSN 51-978-0-155

Chrome Plated

Cover Plate. . . . . . . . . . . . PSN 51-978-9-155

Contact your local distributor for avail-
ability.

Product Symbol Numbers are not
specified when ordering F978 Sprin-
klers with a special painted finish for
the Cover Plate. It is suggested that a
color chip be provided when ordering
special painted finishes. Otherwise,
responsibility for duplication of the de-
sired finish cannot be accepted.

Separately Ordered Parts:

Specify: W-Type 13 Sprinkler Wrench,
PSN 56-976-1-001.

Order for NFPA publications should be
addressed to the:

Publication Sales Department
NFPA
Batterymarch Park
Quincy, MA 02269

Replacement Parts:

Specify: (description) for use with
F978 Sprinklers, PSN (specify).

Sprinkler/Mounting Cup Assemblies
are not available as replacement
parts.

Painted White

135°F/57°C
Cover Plate
Assembly

. . . . . . . . . . . . PSN 56-978-0-155

Chrome Plated

135°F/57°C
Cover Plate
Assembly . . . . . . . . . . . . . PSN 56-978-9-155

Product Symbol Numbers are not
specified for replacement Cover Plate
Assemblies with special  painted  fin-
ishes. Records are not maintained of
previously ordered special painted fin-
ishes. Therefore, it is suggested that a
color chip be provided when ordering
replacement parts with special painted
finishes. Otherwise, responsibility for
duplication of the desired finish cannot
be accepted.

PATENTS

The following patent is applicable to
the Model F978 Residential Con-
cealed Pendent Sprinkler:

U.S.A. 5,152,344

WEIGHT

The nominal weight of the Model F978
Residential Concealed Pendent Sprin-
kler is 7.2 oz. (204 g).

—10—

†

DuPont Registered Trademark

OBSOLETE

Содержание Gem F978

Страница 1: ...ster board ceiling tiles etc by pushing the ceiling product against the Cap When the ceiling in stallation is complete the Cap is re moved and the Cover Plate Assembly installed The F978 Sprinklers ha...

Страница 2: ...ndent Sprinklers are available in a 155 F 68 C temperature rating and they are rated for use at a maximum service pressure of 175 psi 12 1 bar The nominal installation dimensions are given in Figure A...

Страница 3: ...ng jurisdiction 5 The spray from the F978 is dis tributed radially outward and downward from the sprinkler deflector Consequently the sprinklers must be located such that there will not be any blind s...

Страница 4: ...in order to reduce the possibility of sprinkler opera tions outside of the fire area II Beams of at least 3 inches 76 2 mm in height should be used to border each of 5 or more adjoining areas of F978...

Страница 5: ...aced a minimum of 8 feet apart d the sprinklers are installed with Deflector Arms perpendicular to the ceiling ridge and e the sprinklers shown in Figures F 1 through F 8 are located in a plane which...

Страница 6: ...n kler joint should be obtained with a torque of 7 to 14 ft lbs 9 5 to 19 0 Nm More than 21 ft lbs 28 5 Nm of torque may distort the sprinkler orifice seat with consequent leakage Proceed with the ins...

Страница 7: ...ing Do not screw on the Cover Plate Assembly such that it will lift a ceiling panel out of its normal position If the Cover Plate Assembly can not be engaged with the Mount ing Cup or the Cover Plate...

Страница 8: ...UM OF ONE HALF THE LENGTH OF THE COVERAGE AREA BEING HYDRAULICALLY CALCULATED 2 THE MOUNTING SURFACE MUST BE LOCATED WITHIN 4 TO 6 INCHES 101 6 to 152 4 mm OF THE PEAK IF IT IS NOT CONTINUOUS OVER THE...

Страница 9: ...n drapes curtains or valances Do NOT hang anything from the sprinklers Automatic sprinklers are NOT to be tested with a heat source Op eration of the heat responsive element Bulb can result Do NOT cle...

Страница 10: ...ainted finishes Otherwise responsibility for duplication of the de sired finish cannot be accepted Separately Ordered Parts Specify W Type 13 Sprinkler Wrench PSN 56 976 1 001 Order for NFPA publicati...

Страница 11: ...11 O B S O L E T E...

Страница 12: ...O B S O L E T E...

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