Tyco VIZOR EDPA Manual Download Page 1

VIZOR Electronic Dry Pipe Accelerator (EDPA) 

Quick-Opening Device for 

Dry Pipe Systems

Page 1 of 12 

AUGUST 2018 

TFP1105

Worldwide 

Contacts

www.tyco-fire.com

IMPORTANT

Refer to Technical Data Sheet 

TFP2300 for warnings pertaining to 

regulatory and health information.

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 

installation 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 

technology, similar to that used in 

typical alarm panels for alarm and 

detection systems

•  Battery back-up in the event of 

primary 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 

flow 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.

Technical 

Data

NOTICE

Quick operation of the TYCO VIZOR 

Electronic Dry Pipe Accelerator 

does not ensure that the fire protec-

tion system will meet the water deliv-

ery 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 primar-

ily 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). Refer to Table A for List-

ings and Approvals for use of the 

VIZOR Accelerator with specific dry 

pipe valves.

•  UL and ULC Listed

The VIZOR Accelerator is UL and 

ULC Listed per UL1486 for a max-

imum 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.

Summary of Contents for VIZOR EDPA

Page 1: ...intermediate chamber neutralizes the differential pressure holding the dry pipe valve closed and permits the dry pipe valve to trip and flow water into the system piping NOTICE The VIZOR Electronic Dr...

Page 2: ...when AC power is present Trouble Supervisory Amber LED On steady for Trouble 1 flash per second slow for low pressure 4 flashes per second fast for high pressure Battery Trouble Amber LED On steady f...

Page 3: ...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 dr...

Page 4: ...ve 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 first sprinkler operation 4 The minim...

Page 5: ...eding 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 Ste...

Page 6: ...TTERY BATTERIES ASSEMBLE THEN SWITCH ROTARY PRESSURE HIGH LOW ROTARY SWITCH SETTING DATA COVER CONNECTOR 120 VAC POWER L N TROUBLE C NO HI LOW AIR C NO SOLENOID BAT WITH WIRING HARNESS BATTERIES VALVE...

Page 7: ...137 mm 8 7 16 214 mm 6 5 8 168 mm 1 5 8 41 mm 6 3 4 171 mm COVER FRONT STEEL ENCLOSURE 18 GA KNOCKOUTS 4 TOTAL 1 2 CONDUIT INLET 1 2 NPT OUTLET 1 2 NPT VALVE SOLENOID TRANSDUCER PRESSURE BOARD CIRCUI...

Page 8: ...LERATOR TRIM CONNECTION TO INTERMEDIATE CHAMBER 1 2 NPT ACCELERATOR TRIM CONNECTION TO DRY SYSTEM 1 2 NPT MODEL DPV 1 DRY PIPE VALVE WITH TRIM 6 11 9 6 8 6 7 4 8 1 2 ELECTRONIC DRY PIPE ACCELERATOR VI...

Page 9: ...INCH DN150 LEFT SIDE FRONT FRONT LEFT SIDE 14 355 mm 14 3 4 375 mm 12 3 4 324 mm 13 7 8 352 mm 12 300 mm 11 1 2 290 mm 27 1 2 700 mm 29 737 mm FIGURE 6 VIZOR ELECTRONIC DRY PIPE ACCELERATOR INSTALLAT...

Page 10: ...models shown 1 NOTES valve trim and riser connections Refer to Data Sheets Star Model A 1 2 2 1 31 2 00 4 Inch 2 2 1 41 2 00 6 Inch 2 2 1 30 6 97 4 Inch 2 2 1 40 6 97 6 Inch Gem 4 6 Inch Model F302 F...

Page 11: ...After verification of water deliv ery to the Inspector s Test Connection close the system s Main Control Valve and reset the system Partial Flow Trip Test Valve and Accelerator Step 1 Close the system...

Page 12: ...ct name VIZOR Electronic Dry Pipe Accelerator with Trim Specify VIZOR Electronic Dry Pipe Accelerator for use with the 4 or 6 inch TYCO Model DPV 1 Dry Pipe Valve trim P N 52 312 3 001 Required batter...

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