
damageto theDeflectorand Arms dur-
ing ceiling installation and/or during
application of the finish coating of the
ceiling. It may also be used to locate
the center of the clearance hole by
gently pushing the ceiling material
against the center point of the Protec-
tive Cap.
NOTICE
As long as the Protective Cap remains
in place, the system is considered to
be “Out of Service”.
Step 6. After theceilinghas beencom-
pleted with the 2-1/2 inch (63,5 mm)
diameter clearance hole and in prepa-
ration for installing the Cover Plate As-
sembly, remove and discard the Pro-
tective Cap, and verify that the
Deflector moves up and down freely. If
the Sprinkler has been damaged and
the Deflector does not move up and
down freely, replace the entire Sprin-
kler assembly. Do not attempt to mod-
ify or repair a damaged sprinkler.
Step 7. When installing an Air and
Dust Seal, refer to Figure 4, otherwise
proceed to Step 8. To attach the Air
and Dust Seal, verify the angle of the
outside edge of the seal is oriented
according to Figure 4. Start the edge
of the Retainer in the grooved slot of
the Air and Dust Seal and continue
around the retainer until the entire Air
and Dust Seal is engaged.
Step 8. Screw on the Cover Plate/Re-
tainer Assembly until the Retainer -
Figure 2 (or Air and Dust Seal - Figure
4) makes contact with the ceiling. Do
not continue to screw on the Cover
Plate/Retainer Assembly such that it
lifts a ceiling panel out of its normal
position. If the Cover Plate/Retainer
Assembly cannot be engaged with the
Support Cup or the Cover Plate/Re-
tainer Assembly cannot be engaged
sufficiently to contact the ceiling, the
Sprinkler Fitting must be repositioned.
Care and
Maintenance
The Tyco®ILLUSION™ must be
maintained and serviced in accord-
ance with the following instructions:
NOTICE
Absence of the Cover Plate Assembly
may delay sprinkler operation in a fire
situation.
When properly installed, there is a
nominal 3/32 inch (2,4 mm) air gap
between the lip of the Cover Plate and
the ceiling, as shown in Figure 2. This
air gap is necessary for proper opera-
tion of the sprinkler by allowing heat
flow from a fire to pass below and
above the Cover Plate to help assure
appropriate release of the Cover Plate
in a fire situation. If the ceiling is to be
repainted after the installation of the
Sprinkler, care must be exercised to
ensure that the new paint does NOT
seal off any of the air gap.
Factory painted Cover Plates MUST
NOT be repainted. They should be re-
placed, if necessary, by factory
painted units. Non-factory applied
paint may adversely delay or prevent
sprinkler operation in the event of a
fire.
Do not pull the Cover Plate relative to
the Enclosure. Separation may result.
Before closing a fire protection system
main control valve for maintenance
work on the fire protection system that
itcontrols,permission toshutdownthe
affectedfireprotectionsystemmustbe
obtained from the proper authorities
and all personnelwho may be affected
by this action must be notified.
Sprinklers that are found to be leaking
or exhibiting visible signs of corrosion
must be replaced.
Automatic sprinklers must never be
painted, plated, coated or otherwise
altered after leaving the factory. Modi-
fied or over heated sprinklers must be
replaced.
Care must be exercised to avoid dam-
age to the sprinklers - before, during,
and after installation. Sprinklers dam-
aged by dropping, striking, wrench
twist/slippage, or the like, must be re-
placed. Also, replace any sprinkler
that has a cracked bulb or that has lost
liquid from its bulb. (Ref. Installation
Section).
If a sprinkler must be removed, do not
reinstall it or a replacement without
reinstalling the Cover Plate Assembly.
If a Cover Plate Assembly becomes
dislodged during service, replace itim-
mediately.
The owner is responsible for the in-
spection, testing, and maintenance of
their fire protection system and de-
vices in compliance with this docu-
ment, as well as with the applicable
standards of the National Fire Protec-
tion Association (e.g., NFPA 25), in
addition to the standards of any other
authorities having jurisdiction. The in-
stalling contractor or sprinkler manu-
facturer should be contacted relative
to any questions.
Automaticsprinklersystemsshouldbe
inspected, tested, and maintained by
a qualified Inspection Service in ac-
cordance with local requirements
and/or national codes.
Page4of6 TFP184
FIGURE 4
OPTIONAL AIR AND DUST SEAL FOR THE ILLUSION (TY5521)
COVER
ASSEMBLY
RETAINER
PLATE
SPRINKLERSUPPORT
CUP CEILING
FACE OF
SHOWN
SEAL
ORIENT
BEVELAS
AIR
SEAL
AND DUST
LIP OF
RETAINER COVER
PLATE