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Bulletin 058 Rev. B
November 2016

Page 2 of 10

www.reliablesprinkler.com

Model LT56 Specific Application Sprinkler SIN RA5814

Technical Specifications

Style:

Pendent, Recessed Pendent, or

Conical Concealed

Threads:

1/2” NPT or ISO 7-1 R1/2

Nominal K-Factor:

5.6 (80 metric)

Max. Working Pressure:

250 psi (17.2 bar)

Min. Spacing:

14 ft. (4.3 m)

Material Specifications

Thermal Sensor:

3 mm glass-bulb

Sprinkler Frame:

Brass Alloy

Button:

Copper Alloy

Sealing Assembly:

Nickel Alloy with PTFE

Load Screw:

Bronze Alloy

Deflector:

Bronze Alloy

Sprinkler Finishes

(See Table H)

Sensitivity

Quick-response

Temperature Ratings

155°F (68°C)

200°F (93°C)

Recessed Escutcheons/Cover Plates

Model FV recessed escutcheon
Model FP recessed escutcheon
Model CCP cover plate

Sprinkler Wrenches

Model D (pendent)
Model GFR2 (recessed and concealed)

Listings and Approvals

cULus Listed

Model LT56 Sprinkler Components and Dimensions

Figure 1

Model LT56 Sprinkler Hydraulic Design Criteria

Table B

Minimum Flow and Residual Pressure

Max. Coverage Area

ft. x ft.

(m x m)

Flow

gpm

(l/min)

Pressure

psi

(bar)

28 x 8

(8.5 x 2.4)

(87)

16.9

(1.17)

28 x 10

(8.5 x 3.0)

(106)

25.0

(1.72)

Note:

For coverage area dimensions less than or between those listed above, use the minimum required flow for the next highest coverage

area for which hydraulic design criteria are stated.

Содержание LT56 Series

Страница 1: ...esponse 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 sp...

Страница 2: ...ensitivity Quick response Temperature Ratings 155 F 68 C 200 F 93 C Recessed Escutcheons Cover Plates Model FV recessed escutcheon Model FP recessed escutcheon Model CCP cover plate Sprinkler Wrenches Model D pendent Model GFR2 recessed and concealed Listings and Approvals cULus Listed Model LT56 Sprinkler Components and Dimensions Figure 1 Model LT56 Sprinkler Hydraulic Design Criteria Table B Mi...

Страница 3: ...H Sensitivity Quick response Temperature Ratings 165 F 74 C 212 F 100 C Recessed Escutcheons Cover Plates Model FV recessed escutcheon Model FP recessed escutcheon Model CCP cover plate Sprinkler Wrenches Model D pendent Model GFR2 recessed and concealed Listings and Approvals cULus Listed Model LT56L Sprinkler Components and Dimensions Figure 2 Model LT56L Sprinkler Hydraulic Design Criteria Tabl...

Страница 4: ...d Escutcheons Cover Plates Model FV recessed escutcheon Model FP recessed escutcheon Model CCP cover plate Sprinkler Wrenches Model D pendent Model GFR2 recessed and concealed Listings and Approvals cULus Listed Model LT56 300 Sprinkler Components and Dimensions Figure 3 Model LT56 300 Sprinkler Hydraulic Design Criteria Table D Minimum Flow and Residual Pressure Max Coverage Area ft x ft m x m Fl...

Страница 5: ...essed Escutcheons Cover Plates Model FV recessed escutcheon Model FP recessed escutcheon Model CCP cover plate Sprinkler Wrenches Model D pendent Model GFR2 recessed and concealed Listings and Approvals cULus Listed Model LT56L 300 Sprinkler Components and Dimensions Figure 4 Model LT56L 300 Sprinkler Hydraulic Design Criteria Table E Minimum Flow and Residual Pressure Max Coverage Area ft x ft m ...

Страница 6: ...kler Finishes See Table H Sensitivity Quick response Temperature Ratings 165 F 74 C 212 F 100 C Cover Plate Model G4 Sprinkler Wrench Model FC Listings and Approvals cULus Listed Model LT56C Sprinkler Components and Dimensions Figure 5 Model LT56C Sprinkler Hydraulic Design Criteria Table F Minimum Flow and Residual Pressure Max Coverage Area ft x ft m x m Flow gpm l min Pressure psi bar 28 x 8 8 ...

Страница 7: ...65 3 4 19 2 1 4 57 1 1 2 38 1 25 1 4 6 165 F 3 74 C Table G Recessed Escutcheon and Conical Concealed Cover Plate Dimensions Notes 1 Face of fitting to ceiling dimensions are based on nominal thread make up Verify dimensions based on fitting and thread sealing method prior to installation 2 For use with 155 F 68 C and 165 F 74 C temperature rated sprinklers where the Maximum Ceiling Temperature do...

Страница 8: ... plate is the only concealed cover plate permitted for use with the Model LT56C sprinkler Use of any other recessed escutcheon or cover plate will void all approvals and warranties Do not install Model FV and FP escutcheons or Model CCP and G4 cover plates in ceilings that are positively pressurized with respect to the occupied space below When installing Model LT56 LT56L LT56 300 and LT56L 300 sp...

Страница 9: ...Coverage Area Figure 7 Adjacent Sprinklers Figure 8 Example Sprinkler Layout Figure 9 Bulletin 058 Rev B November 2016 Page 9 of 10 www reliablesprinkler com ...

Страница 10: ... could cause improper operation or non operation Do not clean sprinklers with soap and water ammonia liquid or any other cleaning fluids Remove dust by gentle vacuuming without touching the sprinkler Replace any sprinkler which has been painted other than facto ry applied Properly installed Model CCP and Model G4 cover plates will have an air gap that is required for proper operation do not seal t...

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