Page
：
3 of 9
Document No.U086951
Date
：
Jan/11/2019
TABLE A
Type
SIN
Temperature
Frame or Deflector Color Code
Approvals
Remarks
162°F
（
72
℃）
None
205°F
（
96
℃）
White *
1
Upright SS2552
286°F
（
141
℃）
Blue *
1
c
UL
us
*
2,
*
3
FM *
4
162°F
（
72
℃）
None
205°F
（
96
℃）
White *
1
Pendent SS2551
286°F
（
141
℃）
Blue *
1
c
UL
us
*
2,
*
3
FM *
4
162°F
（
72
℃）
None
205°F
（
96
℃）
White *
1
c
UL
us
*
2,
*
3
FM *
4
Recessed
Pendent
SS2551
286°F
（
141
℃）
Blue *
1
c
UL
us
*
2,
*
3
Installed with the D1
Recessed Escutcheon
of 1/2” total adjustment
162°F
（
72
℃）
None
205°F
（
96
℃）
White *
1
Recessed
Pendent
SS2551
286°F
（
141
℃）
Blue *
1
c
UL
us
*
2,
*
3
Installed with the D2
Recessed Escutcheon
of 3/4” total adjustment
*1. Chrome Plated, White and Black Painted are indicated by a dot on the Deflector.
(Frame arms are colored for Natural Brass).
*2. Listed by UL as Quick Response Sprinklers.
*3. Listed by UL for use in Canada as Quick Response Sprinklers.
*4. Approved by FM as Quick Response Sprinklers.
OPERATION
The sprinkler assemblies fusible link is comprised of two link halves that are joined together with a thin layer of solder. When
the rated temperature is reached, the solder melts and the two link halves separate. This leads to the water flow to be
distributed on the affected fire area.
FIGURE 2. OPERATION PROCESS (The figure is for illustrative purposes only)
DESIGN CRITERIA
The Model FR-QR, Upright, Pendent and Recessed Pendent Sprinklers are listed by UL and FM as quick response / standard
coverage for use in accordance with NFPA. The herein stated rules for use and installation of Model FR-QR are provided by the
manufacturer and must be strictly implemented for safe and full results. Only the D1 or D2 Recessed Escutcheon, as applicable,
is to be used for recessed pendent installations.
