General Installation Instructions
Model F3QR dry sprinklers must be installed only in stan-
dard (ANSI B 16.3 class 150 and ANSI B 16.4 class 125)
pipe tees in the horizontal position, even at branch line ends.
They should not be installed into elbows or pipe couplings
located on drop nipples to the sprinklers. For these and
other fittings including CPVC*, the dry sprinkler should be
installed into a fitting to allow protrusion into the fitting in ac-
cordance with the diagrams. The “A” dimension of the dry
sprinkler, which extends into the freezers or a freezing zone
from wet pipe systems, should be selected to provide, as a
minimum, the specified lengths in inches shown in Fig. 10.
Caution:
Do not install Model F3QR Dry sprinklers into CPVC
adapter fittings or tees that have an internal obstruction.
This will damage the sprinkler and /or the fitting. Refer to
Fig. 11.
During installation, the following steps must be followed:
1. Cut the specified size hole (see illustrations) for the sprin-
kler in the ceiling or wall directly in line with the tee.
2. Apply pipe joint compound to the 1” (25mm) pipe
threads and install sprinkler using the Model F3 or
XLO2 Sprinkler Wrench as specified.
3. Install the Model FP push-on / thread-off escutcheon
or CCP cover plate if required.
Note:
Installation of the Model F3QR Sprinklers is not rec-
ommended in copper pipe systems, as this may reduce
the life expectancy of the sprinklers.
Model F3QR Concealed and Recessed In-
stallation Instructions
• The Model XLO2 wrench (Fig. 12) is designed to lo-
cate on the wrenching pads of the recessed sprin-
kler while centering in the cup. A standard ½” drive
ratchet may be used to drive this wrench. Fig. 13 and
Fig. 14 show sequentially the insertion of the wrench.
First the wrench, with its jaws above the sprinkler de-
flector, is moved laterally until centered with the cup.
Then raise the wrench inside of the cup until its jaws
engage the sprinkler’s square wrenching pads (Fig.
14). To remove the wrench, follow this procedure in
reverse order. Care should be taken to avoid striking
the deflector, with the wrench.
• Model F3 Wrench (Fig. 15) is used for installation of
Pendent and Horizontal Sidewall sprinklers.
• Glass bulb sprinklers have orange bulb protectors
to minimize bulb damage during shipping, handling
and installation. REMOVE THIS PROTECTION AT THE
TIME THE SPRINKLER SYSTEM IS PLACED IN SER-
VICE FOR FIRE PROTECTION. Removal of the pro-
tectors before this time may leave the bulb vulnerable
to damage. RASCO wrenches are designed to install
sprinklers when covers are in place. REMOVE PRO-
TECTORS BY UNDOING THE CLASP BY HAND. DO
NOT USE TOOLS TO REMOVE THE PROTECTORS.
Maintenance
The Model F3QR Quick Response Dry Sprinklers should
be inspected and the sprinkler system maintained in accor-
dance with NFPA 25. Do not remove the factory applied
thermally sensitive wax fillet between the bulb supporting
cup and the wrenching boss. Do not replace this wax with a
substitute substance. An Alternate substance may interfere
with proper operation of the sprinkler. Do not clean sprinklers
with soap and water, ammonia or any other cleaning fluids.
Remove dust by using a soft brush or gently vacuuming.
Remove any sprinkler which 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 sprinklers. Prior to installation,
sprinklers should be maintained in the original cartons and
packaging until used to minimize the potential for damage
to sprinklers that would cause improper operation or non-
operation.
Caution:
Use specified by RASCO wrenches only, which are
designed to engage sprinkler’s wrenching pad. (Fig. 15,
page 9)
6.