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OBSOLETE
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
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