Tyco Fire Suppression & Building Products ANSUL AQUASONIC, Design, Installation, Recharge, And Maintenance Manual

Page: 47 / 141

SECTION II
3-1-2010 Page 2-3
TYPES OF DETECTION
There are two approved types of automatic release avail-
able for the AQUASONIC System: electronic control panel
and electric releasing device.
Electronic Control Panel
Electric actuation of the AQUASONIC System is obtained
through the use of electronic control systems which monitor
and control various system functions. All detection equip-
ment must be installed according to NFPA 70 and NFPA 72,
and must be FM Approved. Available detection devices
include: ionization smoke detectors, photoelectric smoke
detectors, flame detectors, and rate-compensated heat
detectors.
Note:
When designing the system, make certain the type of
detector used is appropriate for the type of hazard to
ensure proper response is attained in a fire situation. When
a detector senses a fire, a signal is sent to the control
panel. The panel in turn sends an electrical signal to the
solenoid actuator located on the pilot cylinder valve. The
actuator opens the cylinder valve, releasing the nitrogen
into the manifold. The pressure in the manifold then causes
the slave valves to open and discharge into the piping
network and out the atomizers.
Electric Releasing Device
The ANSUL AUTOMAN II-C electric releasing device uses
approved contact closure devices and actuates the
AQUASONIC cylinders pneumatically, utilizing high-pres-
sure nitrogen to operate the cylinder valve.
SYSTEM LIMITATIONS
Note:
The final AQUASONIC water and nitrogen supply
location will be determined by the results of the calculations
performed in the Design section of this manual.
The AQUASONIC System is approved for hazard and
storage temperatures from 40 °F to 130 °F (4 °C to 54 °C).
The AQUASONIC System may be applied to potential
hazard volumes greater than 9200 ft
3
(260m
3
) up to and
including 36730 ft
3
(1040m
3
).
Maximum Ceiling Height: 26 ft 5 in. (8.0 m).
Enclosure materials (wall, ceiling, and floor) must be non-
combustible as defined by NFPA 13 or equivalent national
or international standards, or have a fire-resistant rating no
less than 30 minutes.
The AQUASONIC System must be installed in a non-corro-
sive environment; the system may be installed in a weather-
proof enclosure for outdoor installations that will not fall
outside the acceptable temperature range of 40 °F to 130
°F (4 °C to 54 °C).
Note:
If located outdoors, a weather-proof ANSUL
AUTOMAN II-C must be utilized or provisions must be
made to protect standard ANSUL AUTOMAN II-C from the
elements.
AQUASONIC Atomizer
The AQUASONIC Atomizer is only to be used in environ-
ments where alloy 316 stainless steel will provide accept-
able corrosion resistance, and the Atomizer Dust Caps will
be resistant to deterioration.
Atomizers should be installed using the provided mounting
bracket. The mounting bracket is designed to allow system
supply piping mounted on a 1 5/8 in. (40 mm) UNISTRUT
channel (www.unistrut.com) to align with the inlet connec-
tions when the bracket is also mounted on the channel.
The water flow rate per atomizer is between 2.2 and 2.7
gpm (8.3 and 10.2 lpm).
Maximum rated volume per atomizer = 3673 ft
3
(104 m
3
).
AQUASONIC Atomizer Placement and Obstructions
When locating the atomizers, select locations that provide
the most uniform distribution of the atomized water droplets
within the protected space. Whenever possible, atomizers
should be located to avoid obstructions in the discharge
path. The discharge path is defined in this section of the
manual. In the event that atomizer locations cannot be
found that allow for unobstructed discharge of the atomized
water droplets, while observing the atomizer placement
requirements outlined in the design section of this manual,
some obstruction to the discharge may be allowed as
described in this section of the manual.
Direct impingement occurs when any part of the discharge
path, as defined in Figure 1, intersects with the turbine
housing. Incidental impingement due to turbulent mixing
outside of the discharge path is not considered direct
impingement.
General Information
CAUTION
!
In turbine enclosures, the AQUASONIC discharge
cannot impinge directly onto the turbine housing.