Installation (General)
Dry sprinklers connected to wet pipe systems must be installed as
indicated in Figure 6 and as required by NFPA 13 with the Exposed
Minimum Barrel Length located in a heated area.
Reliable Model DH56 dry sidewall sprinklers may be installed in
ductile or malleable cast iron threaded tees, or CPVC tees and
adapters upon verification that the sprinkler inlet fitting does not
interfere with the interior of the fitting (see Figure 7).
DO NOT install Reliable Model DH56 dry sidewall sprinklers into
elbows or couplings, welded outlets, mechanical tees, or gasket
sealed CPVC fittings.
DH56 HSW with Standard Escutcheon
Cut a 2-1/8” (54mm) diameter hole in the wall as shown in Fig.
2. Apply a PTFE based sealant to the sprinkler threads before
installing into the fitting. Use the Model F3R installation wrench
(see Fig. 8) on the square boss to tighten the sprinkler until
it is secured in the sprinkler fitting. Installation is completed
by removing the orange glass bulb protector and sliding the
escutcheon over the finished sleeve until tight to the finished
surface.
DH56 HSW with HB Escutcheon
Cut a 2-1/2” (64mm) diameter hole in the wall as shown in Fig.
3. Apply a PTFE based sealant to the sprinkler threads before
installing into the fitting. Use the Model F3R installation wrench
(see Fig. 8) on the square boss to tighten the sprinkler until it
is secured in the sprinkler fitting. Installation is completed by
removing the orange glass bulb protector and sliding the skirt
over the finished sleeve until tight to the finished suface.
DH56 HSW with FP Recessed Escutcheon
Cut a 2-5/8” (67mm) diameter hole in the wall as shown in Fig.
4. Apply a PTFE based sealant to the sprinkler threads before
installing into the fitting. Use the Model F3R installation wrench
(see Fig. 8) on the square boss to tighten the sprinkler until
it is secured in the sprinkler fitting. Installation is completed
by removing the orange glass bulb protector and pushing (or
threading) the FP escutcheon into the threaded cup. Final
adjustment is made by turning the FP escutcheon clockwise until
the flange makes full contact with the wall surface.
DH56 HSW SWC Concealed Cover Plate
Cut a 2-5/8” (67mm) diameter hole in the wall as shown in Fig.
5. Apply a PTFE based sealant to the sprinkler threads before
installing into the fitting. Use the Model F3R installation wrench
(see Fig. 8) on the square boss to tighten the sprinkler until
it is secured in the sprinkler fitting. Installation is completed
by removing the orange glass bulb protector and pushing (or
threading) the SWC cover plate into the threaded cup. Final
adjustment is made by turning the cover plate clockwise until the
cover plate flange makes full contact with the finished surface.
Note:
1. The Model XLO2 installation wrench for FP Recessed
and SWC Concealed installations has a open side to
accommodate the sprinkler deflector and can only be
inserted in one way (see Figure 8). Care must be taken not to
damage the deflector during installation.
2.
Do not over-tighten sprinklers into fittings. It is recommended
that Reliable dry sprinklers be installed using the wrench
referenced in this bulletin. A pipe wrench may also be used
to install dry sprinklers provided that it only engages the
outer tube (steel pipe) of the assembly. Note that a pipe
wrench will impart a large amount of torque into the final
assembly. This torque will need to be matched or exceeded
to remove the sprinkler at a later date. A leak free joint can
normally be obtained by installing the sprinkler to a minimum
torque of 22 ft-lb (30 N-m) after applying an appropriate
thread sealant.
3. Glass bulb sprinklers have orange bulb protectors to
minimize bulb damage during shipping, handling, and
installation. Reliable installation wrenches are designed to
install sprinklers while bulb protectors are in place. REMOVE
THE PROTECTORS AT THE TIME THE SPRINKLER SYSTEM
IS PLACED INTO SERVICE. Removal of the protectors before
this time may leave the glass bulb vulnerable to damage.
Remove protectors by undoing the clasp by hand. DO NOT
USE TOOLS TO REMOVE THE PROTECTORS.
4.
Do not remove the wax fillet in the gap between the cup that
supports the bulb and the wrenching boss.
Step 3
Step 2
Step 1
Figure 8
XLO2 Installation Procedure
Bulletin 016
March 2022
Page 9 of 10
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