Bulletin 056
Page 24 of 24
December 2016
www.reliablesprinkler.com
Model DD56, DD80, and GP56 sprinklers are installed with
the Model R2 or W2 wrench. The Model DS56 wrench is
used to install Model DS56 sprinklers. The use of any other
wrench to installed Reliable Attic sprinklers is not permitted
and may damage the sprinkler. Insert the specified wrench
over the sprinkler until the wrench engages the wrench
flats. Do not wrench any other part of the sprinkler assem-
bly. Tighten the sprinkler into the fitting after applying a
PTFE based thread sealant to the sprinkler’s threads. Rec-
ommended installation torque is specified in Table I.
Installation Torque
Table I
Sprinkler Threads
Recommended
Installation Torque
(min. – max.)
ft-lb N-m
½” NPT or ISO7-1R1/2
8-18
11-24
¾” NPT or ISO7-1R3/4
14-20
19-27
Do not exceed the maximum recommended torque. Ex-
ceeding the maximum recommended torque may cause
leakage or impairment of the sprinkler. Use care when in-
serting or removing the wrench from the sprinkler to avoid
damage to the sprinkler.
Installation Wrenches
Figure 26
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Maintenance
Reliable Attic sprinklers should be inspected and the
sprinkler system maintained in accordance with NFPA 25,
as well as the requirements of any Authorities Having Ju-
risdiction.
Prior to installation, sprinklers should remain in the original
cartons and packaging until used. This will minimize the
potential for damage to sprinklers that could cause im-
proper operation or non-operation.
Do not clean sprinklers with soap and water, ammonia
liquid or any other cleaning fluids. Remove dust by gentle
vacuuming without touching the sprinkler.
Replace any sprinkler which has been painted (other than
factory applied). Replace any sprinkler which has been
damaged. A stock of spare sprinklers should be main-
tained to allow quick replacement of damaged or operated
sprinklers.
Failure to properly maintain sprinklers may result in inad-
vertent operation or non-operation during a fire event.
Guarantee
For the Reliable Automatic Sprinkler Co., Inc. guarantee,
terms, and conditions, visit www.reliablesprinkler.com.
Ordering Information
Specify the following when ordering.
Sprinkler
Model (DD56-6, DD56-27, DD80-6, DD80-27,
DS56, GP56)
Threads (NPT or ISO 7-1)
Sprinkler Wrench
Model R2 or W2 (for Model DD56, DD80, and
GP56 sprinklers)
Model DS56 (for Model DS56 sprinklers)
P/N 9999
970497
