Reliable Automatic Sprinkler Co., Inc.,
103 Fairview Park Drive, Elmsford, New York 10523
Bulletin 010
Rev
.
G
Bulletin 010
Rev.
G
Model HL22 (SIN RA1011)
K22.4 (320 metric)
Early Suppression
Fast Response (ESFR) Sprinkler
Features:
1. cULus, VdS, and LPCB listed as a nominal
K22.4 (320 metric) ESFR sprinkler.
2. FM Approved as a quick-response, storage
and non-storage, sprinkler.
3. Fusible link operating element.
4. UL Listed Specific Application Criteria to
Protect Class I - IV commodity and Cartoned
Unexpanded Group A plastics stored up to
43 ft (13.1 m) in a 48 ft (14.6 m) building
(see complete criteria in this Bulletin).
Product Description
The Reliable Model HL22 is an Early Suppression Fast
Response (ESFR) Sprinkler with a nominal k-factor of 22.4
(320 metric). This sprinkler is designed to respond quickly
to growing fires with a high volume of water discharge to
“suppress” rather than “control” fires.
FM Global classifies the Model HL22 as a quick-response
sprinkler, storage and non-storage, when the sprinkler is
used in accordance with FM Global Property Loss Preven-
tion Data Sheets.
The Model HL22 sprinkler utilizes a levered fusible alloy
solder link in either 165°F (74°C) or 212°F (100°C) tempera-
ture ratings. Model HL22 sprinklers are UL Listed for compli-
ance with UL 1767 and have successfully completed high
clearance tests for rack storage.
Application and Installation
The HL22 ESFR sprinkler is intended for installation in ac-
cordance with NFPA 13 and Factory Mutual (FM) Loss Pre-
vention Data Sheets 2-0 and 8-9, as well as the requirements
of any Authorities Having Jurisdiction. See Table 1 for infor-
mation on NFPA and FM Global design criteria for the Model
HL22 sprinkler.
In addition to design criteria permitted by NFPA 13, the
Model HL22 also has the following Specific Application List-
ing from UL:
Sprinkler: Model HL22 in 212°F (100°C) only
Maximum Ceiling Height: 48 ft. (14.6 m)
Maximum Storage Height: 43 ft. (13.1 m)
Minimum Aisle Width: 8 ft. (2.44 m)
Permitted Commodities: Class I - IV commodities, encap-
sulated or nonencapsulated, and Cartoned Group A Unex-
panded plastics. Permitted Storage Arrangements: Single-
and double-row rack storage (no open top containers or
solid shelves) and palletized and solid pile storage (no open
top containers or solid shelves).
Minimum System Operating Pressure: 55 psi (3.79 bar).
Installation and Obstruction Criteria: Same as for K25.2
ESFR sprinklers, but with a maximum deflector to ceiling
distance of 14 in. (356 mm)
Model HL22 Sprinkler
Installation Criteria
The following general guidelines are provided for infor-
mation only. NFPA and, where applicable, FM Global stan-
dards shall be consulted for complete design and instal-
lation criteria.
Sprinkler Position:
Pendent, align frame arms with
the pipe. Deflectors should be parallel with the ceil-
ing or roof.
System Type:
Wet Pipe Systems Only.
Maximum area of coverage:
100 ft
2
(9.3m
2
), greater
coverage area are allowable in some cases.
Minimum area of coverage:
64 ft
2
(5.8m
2
).
Maximum slope ceiling:
2/12 pitch (9.5°).
Maximum spacing:
12 ft (3.7m) for building heights
up to 30 ft (9.1m) and 10 feet (3.1m) for building
heights greater than 30 ft (9.1m), except where other-
wise permitted.
Minimum spacing:
8 feet (2.4m).
De
fl
ector distance from walls:
At least 4 inches
(102mm) from walls, and no more than one-half the
allowable distance permitted between sprinklers.
De
fl
ector to Top of Storage:
At least 36in (914mm).
De
fl
ector to ceiling Distance:
6-18 in (152-457mm)
per NFPA 13; 6-14 in (152-356mm) when using UL
Listed Special Application criteria for ceilings up to
48 ft (14.6m).
Center Line of Thermal Sensing
Element To Ceiling Distance (FM Only):
Max. 17 in
(425mm); Min. 2 in (50mm) with smooth ceilings; Min.
4 in (100mm) with non-smooth ceilings.
