Sentry SY8052 User manual

Model SY8052
Standard Coverage, Quick Response Concealed Pendent
Sprinkler, K-factor 5.6 (80 metric)
10967 Lake Underhill Rd, Unit 103 Orlando, Florida 32825 Tel:[phone] Fax:[phone]
www.SentrySprinklers.com Page 1/4
Description:
Sentry Sprinklers Model SY8052 is an Automatic Quick
Response Concealed Pendent Sprinkler head that utilizes
a frangible thermo-sensitive glass bulb to operate the
sprinkler. The sprinkler is available in various finishes
and temperatures. Sprinkler Model SY8052 is listed and
approved for standard coverage for Light and Ordinary
hazards. Model SY8052 is a 5.6 K-Factor (80 metric)
intended for use in fire sprinkler systems designed in
accordance with the standard installation rules recognized by
the applicable listings or approved agency. The Concealed
Sprinkler Assembly includes a Cover Plate Assembly that
covers the operating components above the ceiling. The
Cover Plate Assembly is mounted to the Sprinkler Cup
Assembly. Upon the release of the Cover Plate Assembly,
the Concealed Pendent Sprinkler produces a hemispherical
water distribution pattern below the deflector.
Technical Data:
Minimum Operating Pressure: 7 psi (0.5 bar)
Maximum working Pressure: 175 PSI (12 bar)
Factory Test: 100% @ 500 psi (34.5 bar) Hydrostatically
Nominal K-Factor: 5.6 (80 metric)
Thread Size: 1/2” NPT
Bulb size: 3mm
Operation:
Upon fire initiation within a protected hazard, the temperature inside the hazard rises fusing the solder
between the cover plate and its assembly. A spring on the Sprinkler Cover plate Assembly ensures
the ejection of the cover plate from its assembly. The rising heat causes the liquid inside the Thermo-
Sensitive bulb to expand. The liquid expansion causes the glass bulb to break, releasing the bulb seat
assembly. The water discharges through the sprinkler orifice striking the deflector producing a uniform
distribution pattern within the hazard area.
Model SY8052

Model SY8052
Standard Coverage, Quick Response Concealed Pendent
Sprinkler, K-factor 5.6 (80 metric)
10967 Lake Underhill Rd, Unit 103 Orlando, Florida 32825 Tel:[phone] Fax:[phone]
www.SentrySprinklers.com Page 2/4
Approval Material Standard
UL 1- Frame: Brass 7- Set Screw: Brass
2- Mounting Cup 8- Deflector: Bronze
3- Button Seal: Teflon Tape 9- Cover Plate
4- Spring Seal: Stainless Steel 10- Ejection Spring
5- Bulb: Glass Bulb with Glycerine Solution,
3mm Nominal 11- Label
6- Enclosure
Coverage:
For coverage area and placement of the sprinkler refer to NFPA 13
standard.
Guarantee:
Sentry Sprinklers shall replace any of its products if found to be
defective in materials or workmanship for a period of one year from
order date. The guarantee does not cover wear and tear or improper
installation.
Installation:
All sprinkler heads must be inspected prior to installation. If a sprinkler is damaged, the bulb is cracked,
the bulb has loss of liquid and or lost its protective cap, do not install the sprinkler and contact Sentry
Sprinklers for replacement. With the sprinkler held in the horizontal orientation, a small air bubble
should be present inside the glass bulb.
Sprinkler Mounting Cup Assembly

Model SY8052
Standard Coverage, Quick Response Concealed Pendent
Sprinkler, K-factor 5.6 (80 metric)
10967 Lake Underhill Rd, Unit 103 Orlando, Florida 32825 Tel:[phone] Fax:[phone]
www.SentrySprinklers.com Page 3/4
Use Sentry Sprinklers recommended wrench to install the sprinkler. Slide the sprinkler wrench around
the sprinkler frame arms and press the wrench down to engage sprinkler wrench flats. Rotate the
wrench clockwise to tighten the sprinkler head. The frame arms must be parallel to the pipe. Never
tighten the sprinkler from sprinkler arms. Any torque applied to the frame arms will dislodge the bulb
seating assembly causing the sprinkler to leak.
The concealed sprinkler must not be used in any application where the air pressure above the ceiling
is greater than that below it. Downdraft through the Mounting Cup could delay sprinkler operation in a
fire condition.
Only use Sentry Sprinklers recommended wrench to install the sprinkler.
Exercise caution when installing the sprinkler. If the sprinkler is damaged during installation, do not
attempt to fix it, replace it immediately.
After the ceiling has been completed with a 2 ½” (64mm) to 2
13/16” (72mm) diameter clearance hole, remove and discard
the protective cap and verify that the sprinkler is intact.
Do not attempt to make up for insufcient adjustment in
the sprinkler assembly by under or overtightening the
sprinkler Mounting Cup Assembly. Instead, readjust the
position of the sprinkler tting.
Do not remove Sprinkler Protective Cap until you are
ready to install the Cover Plate Assembly.
Absence of the Cover Plate Assembly may delay the sprinkler
operation time in a fire situation.
For additional details, refer to NFPA and UL for installation
guidelines.
Care and Maintenance:
The owner is responsible for maintaining their fire protection system
and devices in proper operating condition. Refer to NFPA 25 for
inspection, testing and maintenance requirements. It is recommended
that an automatic sprinkler system be inspected quarterly by qualified
inspection personnel.
Sprinklers must never be shipped and or stored where ambient
temperature exceeds 100° F / 38° C. Inspect Sprinkler before and
after installation. Exercise caution during installation to avoid damage
to the sprinkler. Damaged sprinkler due to dropping, striking, and or
wrench slippage must be replaced. Cover Plate Assembly

Model SY8052
Standard Coverage, Quick Response Concealed Pendent
Sprinkler, K-factor 5.6 (80 metric)
10967 Lake Underhill Rd, Unit 103 Orlando, Florida 32825 Tel:[phone] Fax:[phone]
www.SentrySprinklers.com Page 4/4
If a sprinkler must be removed for any reason, do not reinstall it or a replacement without reinstalling the
Cover Plate Assembly. If a Cover Plate Assembly becomes dislodged during service, replace it immediately.
Properly installed sprinklers must have a nominal 3/32” (2.4mm) air gap between the lip of Cover Plate
and the ceiling. The air gap is necessary for the proper operation of the sprinkler. If the ceiling is to
be painted after installation of the Cover Plate Assembly, care must be taken to ensure that new paint
does NOT seal off the nominal 3/32” (2.4mm) air gap.
Sprinklers and or cover plates must not be painted, coated or otherwise altered after leaving the factory.
Sprinklers that have been exposed to corrosive products of combustion, but have not operated, must
be replaced.
CONCEALED PENDENT SPRINKLERS
SIN + TEMPERATURE + FINISH CODE
PART SY8052135* SY8052155* SY8052175* SY8052200*
K-FACTOR 5.6 (80 METRIC) 5.6 (80 metric) 5.6 (80 metric) 5.6 (80 metric)
ORIENTATION CONCEALED CONCEALED CONCEALED CONCEALED
RESPONSE QUICK QUICK QUICK QUICK
TEMPERATURE 135° F (57° C) 155° F (68° C) 175° F (79° C) 200° F (93° C)
BULB COLOR ORANGE RED YELLOW GREEN
TEMP. CLASSIFICATION ORDINARY ORDINARY INTERMEDIATE INTERMEDIATE
HAZARD TYPE LIGHT/ORDINARY LIGHT/ORDINARY LIGHT/ORDINARY LIGHT/ORDINARY
APPROVAL UL UL UL UL
THREADS 1/2" NPT 1/2" NPT 1/2" NPT 1/2" NPT
* FINISH CODE: 2 FOR CHROME
COVER PLATE PART NUMBER
SIZE WHITE 135° F (57° C) CHROME 135° F (57° C) WHITE 155° F (68° C) CHROME 155° F (68° C)
ADJUSTMENT 1/6" (4.2 mm) 1/6" (4.2 mm) 1/6" (4.2 mm) 1/6" (4.2 mm)
3- 5/16" CP80135-W CP80135-C CP80155-W CP80155-C
*Do not attempt to paint or repaint the cover plate. Only factory paint is allowed.