Reliable LT56 Series Manual

Reliable LT56 Series Manual

Special sprinklers
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Model LT56 Series Special Sprinklers
Designed specifically for corridors and hallways
Model LT56C
Model LT56C Sprinkler with Model G4 Flat Cover Plate
Product Features
• 28 ft x 10 ft (8.5 m x 3 m) max. coverage area
• cULus Listed for Light Hazard occupancies
• Increased spacing and reduced water demand
in corridors compared with traditional extended
coverage sprinklers
Product Description
Model LT56 series sprinklers are cULus Listed Specific Ap-
plication sprinklers designed for installation in accordance
with NFPA 13. The sprinklers produce a spray pattern that is
specifically designed to cover long narrow spaces, such as
corridors and hallways, with fewer sprinklers and less wa-
ter demand compared with traditional extended coverage
sprinklers.
Model LT56 series sprinklers are quick-response sprinklers
for use in Light Hazard occupancies only. Model LT56 and
Model LT56-300 sprinklers have a glass bulb operating ele-
ment. Model LT56L, LT56L-300, and LT56C sprinklers have
a fusible link operating element. Model LT56, LT56-300,
LT56L, and LT56L-300 sprinklers are available with Model
FV recessed escutcheons, Model FP recessed escutch-
eons, or Model CCP concealed cover plates. Model LT56C
sprinklers require a Model G4 flat concealed cover plate.
Operating
Sprinkler Model
Element
LT56
Glass Bulb
LT56L
Fusible Link
LT56-300
Glass Bulb
LT56L-300
Fusible Link
LT56C
Fusible Link
Max. Working
Pressure
psi (bar)
250 (17.2)
250 (17.2)
Pendent, Recessed Pendent or
Conical Concealed Pendent
300 (21)
300 (21)
175 (12)
www.reliablesprinkler.com
Bulletin 058 Rev. B November 2016
Models LT56 & LT56-300
Model FV Escutheon
Model FP Escutheon
Model CCP Cover Plate
Styles
Flat Concealed
K5.6 (80 Metric)
cULus Listed
Models LT56L & LT56L-300
Model FV Escutheon
Model FP Escutheon
Table A
Sprinkler
Coverage
Identification
Areas
Number (SIN)
Table B
RA5814
Table C
R5814
Table D
RA5914
Table E
R5914
Table F
RA5994

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Summary of Contents for Reliable LT56 Series

  • Page 1 Model FV Escutheon coverage sprinklers Product Description Model LT56 series sprinklers are cULus Listed Specific Ap- plication sprinklers designed for installation in accordance with NFPA 13. The sprinklers produce a spray pattern that is specifically designed to cover long narrow spaces, such as...
  • Page 2 Model LT56 Specific Application Sprinkler SIN RA5814 Technical Specifications Sprinkler Finishes Style: Pendent, Recessed Pendent, or (See Table H) Conical Concealed Threads: 1/2” NPT or ISO 7-1 R1/2 Sensitivity Nominal K-Factor: 5.6 (80 metric) Quick-response Max. Working Pressure: 250 psi (17.2 bar) Min.
  • Page 3 Model LT56L Specific Application Sprinkler SIN R5814 Technical Specifications Sprinkler Finishes Style: Pendent, Recessed Pendent, or (See Table H) Conical Concealed Threads: 1/2” NPT or ISO 7-1 R1/2 Sensitivity Nominal K-Factor: 5.6 (80 metric) Quick-response Max. Working Pressure: 250 psi (17.2 bar) Min.
  • Page 4 Model LT56-300 Specific Application Sprinkler SIN RA5914 Technical Specifications Sprinkler Finishes Style: Pendent, Recessed Pendent, or (See Table H) Conical Concealed Threads: 1/2” NPT or ISO 7-1 R1/2 Sensitivity Nominal K-Factor: 5.6 (80 metric) Quick-response Max. Working Pressure: 300 psi (21 bar) Min.
  • Page 5 Model LT56L-300 Specific Application Sprinkler SIN R5914 Technical Specifications Sprinkler Finishes Style: Pendent, Recessed Pendent, or (See Table H) Conical Concealed Threads: 1/2” NPT or ISO 7-1 R1/2 Sensitivity Nominal K-Factor: 5.6 (80 metric) Quick-response Max. Working Pressure: 300 psi (21 bar) Min.
  • Page 6 Model LT56C Specific Application Sprinkler SIN RA5994 Technical Specifications Sprinkler Finishes Style: Flat Cover Plate Concealed Pendent (See Table H) Threads: 1/2” NPT or ISO 7-1 R1/2 Nominal K-Factor: 5.6 (80 metric) Sensitivity Max. Working Pressure: 175 psi (12 bar) Quick-response Min.
  • Page 7 Recessed Escutcheon and Conical Concealed Cover Plate Dimensions Table G Maximum Face Minimum Face of Maximum Minimum Cover Plate Adjustment of Fitting to Fitting to Deflector Deflector Temperature Type Inch Ceiling Ceiling Distance Below Distance Below °F (mm) Inch Inch Ceiling Inch Ceiling Inch (°C)
  • Page 8: Listings And Approvals

    Model LT56 series sprinklers; note that LT56 series sprinkler are not permitted to be installed with the Model LT56 series sprinklers must be installed with the frame arms short coverage length oriented towards the short coverage length or towers perpendicular to the length of the corridor or hallway.
  • Page 9 Coverage Area Figure 7 Adjacent Sprinklers Figure 8 Example Sprinkler Layout Figure 9 Bulletin 058 Rev. B Page 9 of 10 November 2016 www.reliablesprinkler.com...
  • Page 10: Maintenance

    Model GRF2 Model FC Maintenance Guarantee Reliable Model LT56 series sprinklers should be inspected and For the Reliable Automatic Sprinkler Co., Inc. guarantee, terms, the sprinkler system maintained in accordance with NFPA 25, and conditions, visit www.reliablesprinkler.com. as well as the requirements of any Authorities Having Jurisdic- tion.

This manual is also suitable for:

Lt56Lt56cLt56-300Lt56lLt56l-300

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