Listings and Approvals
1. Listed by Underwriters Laboratories, Inc. and UL
certified for Canada (cULus).
2. FM Approved as a quick-response, storage and non-
storage, sprinkler (FM).
3. VdS Schadenverhütung (VdS).
4. Loss Prevention Certification Board (LPCB).
Patents
Covered by one or more of the following patents:
US Patent No. 6,502,643
US Patent No. 6,868,917
AU Patent No. 722593
GB Patent No. 233677
Maintenance
The HL22 Sprinkler should be inspected and the sprin-
kler system maintained in accordance with NFPA 25. Do
not clean sprinklers with soap and water, ammonia or any
other cleaning fluids. Remove dust by using a soft brush
or gentle vacuuming. Replace any sprinkler that has been
painted (other than factory applied) or damaged in any
way. A stock of spare sprinklers should be maintained to
allow quick replacement of damaged or operated sprin-
klers. Prior to installation, sprinklers should be maintained
in the original cartons and packaging until used. This will
minimize the potential for damage to sprinklers that would
cause improper operation or non-operation.
Engineering Speci
fi
cation
Model HL22 ESFR
Sprinklers shall be Early Suppression Fast Response
(ESFR) pendent suppression mode sprinklers cULus Listed
and FM, VdS, and LPCB Approved for commodity storage
applications. Sprinkler frame and deflector to be of bronze
construction with deflector located inside of the frame arms.
Sprinkler shall have a maximum listed/approved ceiling-to-
deflector distance of 18”. [Sprinklers shall have a UL Listed
Specific Application criteria permitting single- and double-
row rack storage (no open top containers or solid shelves)
and palletized and solid pile storage (no open top contain-
ers or solid shelves) of Class I-IV commodities encapsulat-
ed or nonencapsulated and cartoned Group A unexpand-
ed plastics stored up to 43 ft (13.1m) under ceilings up to
48 ft (14.6m) high when installed with 8 ft. aisles, a minimum
operating pressure of 55 psi (3.79 bar), a maximum deflec-
tor to ceiling distance of 14 in (356mm), and a temperature
rating of 212°F (100°C).]
Fusible alloy solder link assembly shall utilize the strut and
lever principle of operation with approved fast response
beryllium-nickel thermal element with protective [black
painted (165°F)] [white painted (212°F)] coating. Water
seal shall consist of a Teflon-coated Belleville spring washer
and brass cap assembly containing no plastic parts. ESFR
sprinklers shall have a nominal K-factor of 22.4 and [1 in
NPT][ISO 7-R1] threaded end connections. Sprinkler tem-
perature rating shall be [Ordinary 165°F (74°C)] [Intermedi-
ate 212°F (100°C)]. ESFR pendent sprinklers shall be Reli-
able Model HL22, SIN RA1011 (Bulletin 010).
Model HL22 Temperature Ratings and Approvals
Temperature
Classi
fi
cation
Temperature
Rating
Link
Color
Frame
Color
Maximum Ambient
Temperature
Approvals
Sprinkler
Identi
fi
cation
Number
(SIN)
°F
°C
°F
°C
Ordinary
165
74
Black
Uncolored
100
38
cULus, FM, VdS, LPCB
RA1011
Intermediate
212
100
White
White
150
66
cULus & UL Spec App, FM, VdS,
LPCB
RA1011
Installation Data
Sprinkler Type
Nominal Ori
fi
ce
Thread Size
Nominal K-Factor
Maximum Working
Pressure
US
Metric
Pendent
0.87”
(22.1mm)
1” NPT
ISO 7-R1 (Optional)
22.4
320
175 psi
(12.1 bar)
2.
