Tyco ACC-1 User Manual

Technical Services: Tel: (800) 381-9312 / Fax: (800) 791-5500
Model ACC-1 Dry Pipe Accelerator
Model ACC‑1 Dry Pipe Valve Accelerator
External Resetting Quick Opening Device
External Resetting Quick Opening Device
For Dry Pipe Valves
For Dry Pipe Valves
General
General
Description
Description
The Model ACC-1 Accelerator is a
The Model ACC‑1 Accelerator is a quick
quick opening device intended for at-
opening device intended for attachment
tachment to the Tyco Fire Products, 4
to the Tyco Fire & Building Products, 2‑1/2,
or 6 inch Model DPV-1 Dry Pipe Valve.
The Model ACC-1 Accelerator reduces 3, 4 or 6" Model DPV‑1 Dry Pipe Valve. The
the time for valve operation following
Model ACC‑1 Accelerator reduces the time
the operation of one or more automatic
for valve operation following the operation
sprinklers.
of one or more automatic sprinklers.
The Model ACC-1 Accelerator auto-
The Model ACC‑1 Accelerator automatical‑
matically adjusts to both small and
ly adjusts to both small and slow changes
slow changes in system pressure, but
in system pressure, but trips when there is
trips when there is a rapid and steady
a rapid and steady drop in pressure (as in
drop in pressure (as in the case of a
the case of a sprinkler operation). Upon
sprinkler operation). Upon tripping, the
Accelerator transmits system air pres- tripping, the Accelerator transmits system
sure to the intermediate chamber of
air pressure to the intermediate chamber of
the Model DPV-1 Dry Pipe Valve. This
the Model DPV‑1 Dry Pipe Valve. This neu‑
neutralizes the differential pressure
tralizes the differential pressure holding the
holding the Model DPV-1 Dry Pipe
Model DPV‑1 Dry Pipe Valve closed and per‑
Valve closed and permits it to open.
mits it to open.
The Model ACC-1 Accelerator has a
The Model ACC‑1 Accelerator has a unique,
unique, positive action, internal anti-
positive action, internal anti‑flood device
flood device and a ball float which com-
and a ball float which combine to prevent
bine to prevent water and water borne
water and water borne debris from entering
debris from entering the more sensi-
tive operating areas of the accelerator. the more sensitive operating areas of the
The anti-flood device seals and
accelerator. The anti‑flood device seals and
latches immediately upon operation of
latches immediately upon operation of the
the Model ACC-1 Accelerator without
Model ACC‑1 Accelerator without waiting
waiting for a pressure build-up in the
for a pressure build‑up in the intermediate
intermediate chamber of the dry pipe
chamber of the dry pipe valve. The latching
valve. The latching feature keeps the
feature keeps the anti‑flood device sealed,
anti-flood device sealed, even while
even while the system is being drained. The
the system is being drained. The ball
ball float seals the pilot chamber inlet port
float seals the pilot chamber inlet port
if there is an inadvertent trip of the dry pipe
if there is an inadvertent trip of the dry
valve, due for example, to an air compressor
pipe valve, due for example, to an air
compressor failure combined with a failure combined with a slow loss in system
slow loss in system air pressure due to
air pressure due to a leak.
a leak.
The Model ACC‑1 Dry Pipe Valve Accelerator
The Model ACC-1 Dry Pipe Valve Ac-
is a direct replacement for the Central Mod‑
celerator is a direct replacement for
el B, Gem Model F311, and Star Model S430.
the Central Model B, Gem Model F311,
Contact the Technical Services Department
and Star Model S430. Contact the
for information concerning the use of the
Technical Services Department for in-
ACC‑1 for use with dry pipe valves other
formation concerning the use of the
than the Model DPV‑1.
ACC-1 for use with dry pipe valves
other than the Model DPV-1.
Page 1 of 10
Page 1 of 8
http://www.tyco-fireproducts.com
The Model ACC-1 Dry Pipe Valve Ac-
The Model ACC‑1 Dry Pipe Valve Accelerator
celerator described herein must be in-
described herein must be installed and main‑
stalled and maintained in compliance
tained in compliance with this document, as
with this document, as well as with the
well as with the applicable standards of the
applicable standards of the National
Fire Protection Association, in addition National Fire Protection Association, in addi‑
to the standards of any other authori-
tion to the standards of any other authori‑ties
ties having jurisdiction. Failure to do so
having jurisdiction. Failure to do so may im‑
may impair the integrity of this device.
pair the integrity of this device.
The owner is responsible for maintain-
The owner is responsible for maintaining their
ing their fire protection system and de-
fire protection system and devices in proper
vices in proper operating condition.
operating condition. The installing contrac‑
The installing contractor or sprinkler
tor or sprinkler manufacturer should be con‑
manufacturer should be contacted
tacted relative to any questions.
relative to any questions.
Technical Data
Approvals
UL and ULC Listed. FM and LPCB Approved.
Maximum Working Water Pressure
17,2 bar (250 psi)
Technical
Data
Maximum Working Air Pressure
4,8 bar (70 psi)
Approvals
Pressure Decay For Trip
UL and ULC Listed. FM and LPCB
0,07 bar/min (1 psi/min)
Approved.
Maximum Working Water Pressure
Physical Characteristics
250 psi (17,2 bar)
Body components constructed of alodine
Maximum Working Air Pressure
coated aluminum alloy with austenitic se‑
70 psi (4,8 bar)
ries stainless steel internal components.
Pressure Decay For Trip
Seals are EPDM and silicone.
1 psi/min (0,07 bar/min)
Physical Characteristics
Body components constructed of
alodine coated aluminum alloy with
austenitic series stainless steel inter-
nal components. Seals are EPDM and
silicone.
Patents
The following patents may be applica-
ble to the Model ACC-1:
U.S.A. 4,570,719 and
United Kingdom 2,159,406.
JANUARY, 2003
WARNING
WARNING
Design Data
Design
Data
The connection to the system piping,
Figure 4, must be located so that drain
back water will not flow into the Accel‑
The connection to the system piping,
erator piping and it must be located at
Figure 4, must be located so that drain
a point above the maximum expected
back water will not flow into the Accel-
level of the drain back/condensate water.
erator piping and it must be located at
a point above the maximum expected
If the connection is made to the riser, it
level of the drain back/condensate
must be located at least two feet above
water.
the level of the dry pipe valve. Connec‑
If the connection is made to the riser,
tions to a feed or cross main must be
it must be located at least two feet
made either to the side or top of the main.
above the level of the dry pipe valve.
Connections to a feed or cross main
must be made either to the side or top
NOTES
of the main.
Failure to follow the above instructions can
result in accidental tripping due to closure of
NOTES
the ball float.
Failure to follow the above instructions
can result in accidental tripping due to
Quick operation of the Accelerator does not
closure of the ball float.
ensure that the fire protection system will
meet the water delivery time requirement of
Quick operation of the Accelerator
the authority having jurisdiction (following
does not ensure that the fire protection
system will meet the water delivery opening of the Inspector's Test Connection).
time requirement of the authority hav-
The sprinkler system designer needs to be
ing jurisdiction (following opening of
aware that water delivery time is primarily
the Inspector's Test Connection). The
determined by the configuration and volume
sprinkler system designer needs to be
of the piping network, system air pressure
aware that water delivery time is pri-
at time of Accelerator trip, and water supply
marily determined by the configuration
characteristics.
and volume of the piping network, sys-
tem air pressure at time of Accelerator
trip, and water supply characteristics.
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