Tyco VIZOR User manual

VIZOR Electronic Dry Pipe Accelerator (EDPA)
Quick-Opening Device for
Dry Pipe Systems
Page 1 of 12 AUGUST 2022 TFP1105
Worldwide
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General
Description
The TYCO VIZOR Electronic Dry Pipe
Accelerator (EDPA) is a quick-opening
device intended to reduce the operat-
ing time of the dry pipe valves listed in
Table A following operation of one or
more automatic sprinklers.
Unlike traditional mechanically oper-
ated quick-opening devices, the VIZOR
accelerator is a microprocessor-based,
electronic, quick-opening device.
The VIZOR accelerator automatically
adjusts to both small and slow changes
in system air pressure, but trips when
there is a steady drop in system air
pressure upon sprinkler operation.
The VIZOR accelerator features the
following:
• Direct mounting to the riser
• Installation consistent with the instal-
lation of mechanical devices
• Easy test-and-reset function,
as compared to mechanical
accelerators
• Operation of a dry pipe valve within
four seconds — over a wide range
of system volumes, system initial air
pressures, and sprinkler K-factors
•
Built-in low-pressure and high-pres-
sure alarm supervision
• Electronically self-supervising tech-
nology, similar to that used in typical
alarm panels for alarm and detection
systems
• Battery back-up in the event of pri-
mary power failure
The VIZOR Electronic Dry Pipe Acceler-
ator utilizes a unique, patented system
air pressure monitoring design that
continuously samples the system air
pressure.
When the VIZOR accelerator detects
a sustained drop in air pressure, the
VIZOR accelerator energizes its inter-
nal solenoid valve.
The energized solenoid valve then
opens to permit system air pressure
into the intermediate chamber of the
dry pipe valve.
The pressurized intermediate chamber
neutralizes the differential pressure
holding the dry pipe valve closed and
permits the dry pipe valve to trip and
ow water into the system piping.
NOTICE
The VIZOR Electronic Dry Pipe Acceler-
ator described herein must be installed
and maintained in compliance with this
document and with the applicable stan-
dards of the NATIONAL FIRE PROTEC-
TION ASSOCIATION, in addition to the
standards of any authorities having
jurisdiction. Failure to do so may impair
the performance of this device.
The owner is responsible for main-
taining their fire protection system
and devices in proper operating con-
dition. Contact the installing contrac-
tor or product manufacturer with any
questions.

TFP110 5
Page 2 of 12
Technical
Data
NOTICE
Quick operation of the TYCO VIZOR
Electronic Dry Pipe Accelerator does
not ensure that the fire protection
system will meet the water delivery time
requirement of the authority having
jurisdiction (following opening of the
Inspector’s test connection). The sprin-
kler system designer has to be aware
that water delivery time is primarily
determined by the configuration and
volume of the piping network, system
air pressure at the time of accelerator
trip, number and orifice size of open
sprinklers, and water supply character-
istics. It is essential for the designer to
verify the impact of these site-specific
factors on water delivery time.
Approvals
Listings and approvals are under
the name of Potter Electric Signal
Company Electric Dry Pipe Accelera-
tor (EDPA). See Table A for Listings and
Approvals for use of the VIZOR accel-
erator with specic dry pipe valves.
• UL and ULC Listed
The VIZOR accelerator is UL and ULC
Listed per UL1486 for a maximum system
capacity of 1690 gallons (6397 liters) for a
single nominal 5.6 K-factor sprinkler and
a maximum working water pressure of
300 psi (20,7 bar).
• FM Approved
The VIZOR accelerator is FM Approved
for TYCO Model DPV-1 Valves and can
be used with the following discontinued
models: Central Models AG and AF, GEM
Models F302 and F3021, and Star Models
A and A1.
Maximum Water Pressure
300 psi (20,7 bar)
Air Pressure
10 to 65 psi (0,69 to 4,48 bar)
Pressure Decay For Trip
0.1 psi/sec. (0,007 bar/s)
High/Low Pressure Settings
See Table B
VIZOR Environmental
Specifications
• VIZOR accelerator
• NEMA 2, Indoor use
40°F to 120°F (4°C to 49°C)
• Battery Cabinet
NEMA 1, Indoor use
32°F to 120°F (0°C to 49°C)
Power Requirements
Maximum 0.75 A @ 120/220 AC
Batteries (Ordered Separately)
• STANDARD 24-hour battery back-up
provided by two 12-volt (1.3 AH) batteries
• OPTIONAL 90-hour battery back-up
provided by two 12-volt (5 AH) batteries
Battery Current Draw
Standby: 43 ma; Alarm: 440 ma
Dry Contact Rating
Trouble: 5 A @ 30 VDC
High/Low: 5 A @ 30 VDC
Installation Dimensions
See Figure 6
NOTICE
When the VIZOR accelerator is installed
in accordance with these instructions,
the equipment’s design provides rea-
sonable protection against limited
radio frequency sources. Intention-
ally subjecting the equipment to radio
frequency sources could result in
unintended operation of the dry pipe
system.
VIZOR Accelerator Indicators and
Controls
See Figures 1 and 2.
• AC Power (Green LED): On steady
when AC power is present
• Trouble/Supervisory (Amber LED):
On steady for Trouble, 1 ash per
second (slow) for low pressure, 4
ashes per second (fast) for high
pressure
• Battery Trouble (Amber LED):
On steady for low battery
• Tripped (Red LED): Flashes for 30
seconds to indicate the solenoid
is open and the VIZOR accelera-
tor is tripped; lights steady after 30
seconds indicating the solenoid is
closed
• S1 (Two-Position Switch): Up to
SET to place the VIZOR accelerator
in service when air pressure matches
rotary switch setting; down to OFF
to take the VIZOR accelerator out of
service
• S2 (Two-Position Momentary
Switch): Up to RESET to reset the
VIZOR accelerator after activation;
down to SILENCE to silence the
buzzer
• Buzzer: Indicates any trouble or
supervisory condition by sounding
an audible alarm
• Trouble Dry Contacts (Normally
Open): Activate on any trouble con-
dition such as low batteries or when
S1 is pushed into the OFF position;
activate on a loss of AC power after
60 minutes
• High/Low Dry Contacts (Normally
Open): Activate when system pres-
sure is outside of the normal setting
of the rotary switch
Manufacturer
Valve
Model
Valve
Size
ANSI
Inches
(DN)
Laboratory
UL FM
TYCO
Model
DPV-1
4, 6
(DN100,
DN150) • •
Central
Models
AG, AF
3, 4, 6
(DN80,
DN100,
DN150)
•See
note
Gem
Models
F302, F3021
4, 6
(DN100,
DN150) •See
note
Star
Models
A, A1
4, 6
(DN100,
DN150) •See
note
Note: For retrot applications, the FM Ap-
proved Model DPV-1 application of EDPA
Electronic Accelerator Systems can be used
for the specied discontinued valves.
Switch
Setting
Pressure
Nominal
psi (bar)
Threshold
Low Air
psi (bar) High Air psi (bar)
0 10 (0,69) 7 (0,48) 15 (1,04)
115 (1,04) 7 (0,48) 20 (1,38)
2 20 (1,38) 15 (1,04) 25 (1,72)
325 (1,72) 15 (1,04) 35 (2,41)
430 (2,07) 20 (1,38) 40 (2,76)
5 35 (2,41) 25 (1,72) 45 (3,10)
640 (2,76) 30 (2,07) 50 (3,45)
745 (3,10) 35 (2,41) 55 (3,79)
855 (3,79) 45 (3,10) 65 (4,48)
9 65 (4,48) 55 (3,79) 75 (5,17)
TABLE A
LABORATORY LISTINGS
AND APPROVALS FOR
DRY PIPE VALVE
COMPATIBILITY
TABLE B
VIZOR ELECTRONIC
DRY PIPE ACCELERATOR
HIGH/LOW PRESSURE SETTINGS

TFP110 5
Page 3 of 12
Operation
The TYCO VIZOR Electronic Dry Pipe
Accelerator provides a microproces-
sor-based, electronic, dry pipe valve
accelerator designed to monitor the
air pressure in a dry pipe system and
reduce the time it takes for the dry pipe
valve to operate following the opening
of one or more sprinklers. The VIZOR
accelerator can be used in new instal-
lations or to replace mechanical type
accelerators in existing systems.
The VIZOR accelerator operates upon
detection of a steady drop in air pres-
sure of 0.1 psi per second (0,007 bar/s)
or greater, or if the pressure drops to
5.5 psi (0,38 bar). The VIZOR accelera-
tor typically responds to an open sprin-
kler in approximately 2 seconds.
In order to minimize false trips and
high/low air trouble conditions, the
use of a tank mounted air compres-
sor or plant air in conjunction with the
TYCO AMD-1 Air Maintenance Device
is strongly recommended, The com-
pressor, or plant air, should be set to
maintain a minimum of 10 psi greater
than the required system air pressure.
Note: Although the VIZOR accelera-
tor is designed to respond to an open
sprinkler in approximately 2 seconds,
operation of the dry pipe valve is
expected within 4 seconds. The dif-
ference of 2 seconds is a conserva-
tive estimation for the dry pipe valve to
physically trip.
Upon detection of a drop in air pres-
sure, the VIZOR accelerator opens
an internal solenoid valve allowing
system air pressure into the intermedi-
ate chamber of the dry pipe valve. The
pressurized intermediate chamber neu-
tralizes the differential pressure holding
the dry pipe valve closed and permits
the valve to open. The solenoid valve
automatically closes after 30 seconds.
The VIZOR accelerator contains two
sets of normally open, dry contacts.
The high/low supervisory contacts
close if the normal system air pressure
in the system increases or decreases
beyond a given point, see Table B. The
ten-position rotary switch, see Figure 2,
provides ten preset pressure settings.
The factory setting is position #4 for a
normal system air pressure of 30 psi.
The trouble dry contacts close during
any one of the following conditions:
• Low-battery condition (up to a 1-min-
ute delay is normal)
• AC power loss (after a 60-minute
delay)
• SET/OFF switch in the OFF position
An internal buzzer sounds during any
off-normal condition.
Installation
The TYCO VIZOR Electronic Dry Pipe
Accelerator must be installed in accor-
dance with this section.
NOTICE
When working on the VIZOR accelera-
tor or the dry pipe valve, S1 should be
in the OFF position; otherwise, the dry
valve can inadvertently trip.
Make all pipe fitting connections to the
VIZOR accelerator inlet and outlet ports
by using the wrench flats on the VIZOR
accelerator. DO NOT tighten connec-
tions by grasping the VIZOR accelera-
tor housing. Failure to do so may result
in damage to the components within
the device.
Install all required conduits and make
all connections with AC power off. The
VIZOR accelerator must be hard-wired
to complete the installation.
During installation, the buzzer may
sound. Silence the buzzer at any time
by momentarily pushing S2 to the
SILENCE position.
The VIZOR accelerator must be
installed according to applicable
NFPA codes (for example, NFPA 13,
70, and 72) as well as all local instal-
lation codes.
Step 1. Install the VIZOR accelerator
as shown in Figures 6 and 7. Apply
pipe-thread sealant sparingly to male
threads only.
Step 2. Following Figure 2 and Table B,
set the Ten-Position Rotary Switch to
the required setting using the provided
screw driver.
Step 3. As shown in Figure 2, tape the
12V, 1.3 AH batteries together. Connect
the harness wires (leads in Figure 2) to
AC POWER
TROUBLE / SUPERVISORY
LED INDICATOR CODES
TROUBLE /
SUPERVISORY
BATTERY
TROUBLE
TRIPPED
ON STEADY: SYSTEM TROUBLE
SLOW FLASH: LOW PRESSURE
FAST FLASH: HIGH PRESSURE
OFF
S1
SET
SILENCE
S2
RESET
OPERATING INSTRUCTIONS
Normal operation: Place S1 to SET after system reaches normalair pressure.
Disable for testing or maintenance: Place S1 to OFF.
Reset after a trip: Place S1 to OFF. After system reaches normal operating pressure,
press S2 to RESET and place S1 to SET.
Note: The accelerator will be in atrouble condition when S1 is placed to OFF. Press
S2 to SILENCE to silence the trouble buzzer.
HAZARDOUS VOLTAGE MAY BE PRESENT.
DISCONNECT POWER BEFORE SERVICING.
AC POWER
TROUBLE / SUPERVISORY
LED INDICATOR CODES
TROUBLE /
SUPERVISORY
BATTERY
TROUBLE
TRIPPED
ON STEADY: SYSTEM TROUBLE
SLOW FLASH: LOW PRESSURE
FAST FLASH: HIGH PRESSURE
OFF
S1
SET
SILENCE
S2
RESET
OPERATING INSTRUCTIONS
Normal operation: Place S1 to SET after system reaches normal air pressure.
Disable for testing or maintenance: Place S1 to OFF.
Reset after a trip: Place S1 to OFF. After system reaches normal operating pressure,
press S2 to RESET and place S1 to SET.
Note: The accelerator will be in a trouble condition when S1 is placed to OFF. Press
S2 to SILENCE to silence the trouble buzzer.
HAZARDOUS VOLTAGE MAY BE PRESENT.
DISCONNECT POWER BEFORE SERVICING.
FIGURE 1
VIZOR ELECTRONIC DRY PIPE ACCELERATOR
FRONT VIEW WITH COVER CLOSED

TFP110 5
Page 4 of 12
Notes
1.
Quick operation of the TYCO VIZOR Electronic Dry Pipe Accelerator does not ensure that the re protection system
will meet the water delivery time requirement of the authority having jurisdiction (following opening of the Inspector’s
test connection). The sprinkler system designer has to be aware that water delivery time is primarily determined
by the conguration and volume of the piping network, system air pressure at time of Accelerator trip, number and
orice size of open sprinklers, and water supply characteristics. It is essential for the designer to verify the impact
of these site-specic factors on water delivery time.
2.
The sensitivity criteria for the VIZOR accelerator is a function of its pressure decay for trip rating of 0.1 psi (0,007 bar)
per second, as well as the system volume, the K-factor of the sprinklers being utilized, and the minimum initial air
pressure. The larger the system volume combined with smaller sprinkler K-factor or lower initial air pressure results
in a slower air decay rate upon the rst sprinkler operation. Conversely, a smaller system volume combined with a
larger sprinkler K-factor or higher initial air pressure results in a faster air decay rate.
3.
When the sprinkler system has been designed within the criteria provided by Graph A, operation of the VIZOR
accelerator and subsequent operation of the associated dry pipe or preaction valve can be expected within four
seconds. In the case of the double interlock preaction system, operation is based on the electric detection system
operating before a rst sprinkler operation.
4.
The minimum system air pressure must be the greater of that required for the dry pipe / preaction valve as a function
of the maximum expected water supply pressure or per Graph A when using the VIZOR accelerator.
5.
When considering multiple sprinkler operations as in the case of using a dry system water delivery design per NFPA
13, use the “11.2 K-factor and larger” curve as referenced in Example 3 below.
Examples
1.
For a system volume of 1500 gallons (5680 liters) and the use of sprinklers having a K-factor of 5.6, the minimum
system air pressure must be 18.5 psi (1,3 bar).
2.
For a system volume of 2000 gallons (7570 liters) and the use of sprinklers having a K-factor of 8.0, the minimum
system air pressure must be 16.0 psi (1,1 bar).
3.
With the use of a dry system water delivery design per NFPA 13, wherein the operation of two 5.6 K-factor sprinklers
might be anticipated (and the effective K-factor is then 11.2), the “11.2 K-factor and larger” curve can be utilized.
Consequently, for a system volume of 2400 gallons (9084 liters), the minimum system air pressure must be 11.5 psi
(0,8 bar).
10 20 30 40 50 60
MINIMUM SYSTEM AIR PRESSURE, PSI (BAR)
K=4.2
K=5.6
K=8.0
K 11.2
(0,7) (1,4) (2,1) (2,8) (3,4)
(4,1)
MAXIMUM SYSTEM CAPACITY,
GALLONS (LITRES)
800 (3028)
1000 (3785)
1200 (4542)
1400 (5299)
1600 (6056)
1800 (6813)
2000 (7570)
2200 (8327)
2400 (9084)
2600 (9841)
2800 (10598)
GRAPH A
TYCO VIZOR ELECTRONIC DRY PIPE ACCELERATOR
SENSITIVITY CRITERIA BASED ON FM APPROVAL

TFP110 5
Page 5 of 12
the batteries, slide the battery assem-
bly into the housing, and plug the
harness connector into the VIZOR
accelerator circuit board.
For the optional 90-hour batteries,
mount the remote battery enclosure
horizontally and within 10 feet of the
VIZOR accelerator. Splice the battery
cable, see Figure 5, connect the cable
to the batteries, then plug the battery
assembly into the VIZOR accelera-
tor harness. Lastly, plug the harness
connector into the VIZOR accelerator
circuit board.
Step 4. Close and lock the cover.
Step 5. Push S1 to the OFF position.
Step 6. In order to minimize an inad-
vertent primary (A/C) power loss and
to facilitate maintenance, it is recom-
mended that a dedicated circuit be
hard-wired to the VIZOR accelerator.
The following notications occur:
•
The green AC LED lights, the amber
trouble / supervisory LED lights,
the red tripped LED lights, and the
buzzer sounds.
•
Assuming the batteries are charged,
the amber battery Trouble LED
remains unlit.
Step 7. Optionally conduct trip tests of
the VIZOR accelerator and the dry pipe
valve in accordance with the Care and
Maintenance section.
Step 8. Optionally, and/or if required
by local jurisdiction, hard-wire moni-
toring circuits to the Trouble and high/
low supervisory contacts using 14 to
18 AWG wire.
Step 9. Push S1 to the SET position.
Step 10. Verify proper operation of the
VIZOR accelerator using the “No Flow
Trip Test for Accelerator Only” proce-
dure described in the Care and Main-
tenance section.
Setting
Procedure
As soon as possible after an opera-
tion, reset and restore to service the
Dry Pipe Valve (listed in Table A) and
the TYCO VIZOR Electronic Dry Pipe
Accelerator in accordance with the fol-
lowing procedure.
NOTICE
Completely drain the system before
proceeding.
After setting a fire protection system,
notify the proper authorities and advise
those responsible for monitoring pro-
prietary and/or central station alarms.
Step 1. Push S1 to the OFF position.
Step 2. Silence the internal audible
alarm at any time by momentarily
pushing S2 to the SILENCE position.
Step 3. Locate all of the system’s low
point drain valves to help facilitate
resetting of the system. Refer to the
appropriate dry valve data sheet for
valve resetting procedures.
Step 4. Clean the strainer by removing
the clean-out plug and strainer basket.
Step 5. Follow the resetting procedure
for the installed dry pipe valve. When
the procedure calls for the system
piping to be pressurized with air, start
to pressurize the system and then
proceed to Step 6.
Step 6. When the system reaches an
air pressure of approximately 10 psi
and while the system is in the process
of reaching its intended pressure,
“blow-down” each drain valve. Be sure
to include the low body drains at the
dry pipe valve and the Inspector’s test
connection.
To “blow-down”, open each drain valve
individually, and when water stops
draining, close the drain valve. This
blow-down procedure assures that
complete draining of the system can
be more easily accomplished.
Step 7. When the system reaches the
normal intended air pressure, wait
approximately 30 seconds to allow for
stabilization of the air pressure within
the piping. Momentarily push button
S2 on the VIZOR to the RESET posi-
tion to clear the red tripped LED, and
then push button S1 the SET position.
Step 8. Open the inspector’s test con-
nection (ITC), verify that the VIZOR has
tripped. A momentary burst of air from
the dry pipe valve’s automatic drain
valve indicates that the VIZOR accel-
erator has tripped. Verify that the time-
to-trip for the accelerator is essentially
the same as in previous tests.
This procedure also clears scale and
debris from the pipe and ttings that are
connected to the VIZOR accelerator.
Step 9. Push S1 to the OFF position,
allow the system to automatically return
to its intended pressure via its auto-
matic air supply. After waiting approxi-
mately 30 seconds, momentarily push
S2 to the RESET position, and then
push S1 to the SET position.
Step 10. Partially open the main
control valve. Slowly close the system
main drain valve as soon as water dis-
charges from the drain connection.
Step 11. Depress the plunger on the
dry pipe valve’s automatic drain valve
to verify that it is open and that no water
discharges. The absence of water dis-
charge from the automatic drain valve
is an indication of a properly set water
seat within the dry pipe valve.
If water is discharging, see the Care
and Maintenance section within the
technical data sheet for the dry pipe
valve to determine/correct the cause of
the leakage problem.
If there are no leaks, fully open the
system main control valve.
The system is now set for service.