1 Technical Services 8. 00-381-9312 | +1-401-781-8220. VIZOR Electronic Dry pipe Accelerator (EDPA). Quick -Opening Device for Dry pipe Systems 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 sys- tem air pressure, but trips when there is a steady drop in system air pressure upon sprinkler operation.
2 The VIZOR Accelerator features the When the VIZOR Accelerator detects For additional information, refer to the following: a sustained drop in air pressure, the Potter Electric Signal Company Data VIZOR Accelerator energizes its internal Sheet 5401212. Direct mounting to the riser solenoid valve. Installation consistent with the in- The energized solenoid valve then stallation of mechanical devices opens to permit system air pressure Easy test-and-reset function, as into the intermediate chamber of the compared to mechanical dry pipe valve. accelerators The pressurized intermediate chamber Operation of a dry pipe valve within neutralizes the differential pressure four seconds over a wide range holding the dry pipe valve closed and of system volumes, system initial air permits the dry pipe valve to trip and pressures, and sprinkler K-factors flow water into the system piping.
3 Built-in low-pressure and high- pressure alarm supervision NOTICE. Electronically self-supervising tech- The VIZOR Electronic Dry pipe nology, similar to that used in typ- Accelerator described herein must be ical alarm panels for alarm and installed and maintained in compliance detection systems with this document and with the ap- plicable standards of the National Fire Battery back-up in the event of pri- Protection Association, in addition to mary power failure the standards of any authorities having The VIZOR Electronic Dry pipe jurisdiction. Failure to do so may impair Accelerator utilizes a unique, patented the performance of this device.
4 System air pressure monitoring design Owners are responsible for maintaining that continuously samples the system their fire protection system and devices air pressure. in proper operating condition. The install- ing contractor or sprinkler manufacturer should be contacted with any questions. Page 1 of 12 APRIL 2011 TFP1105. TFP1105. Page 2 of 12. Technical FM Approved The VIZOR Accelerator is FM. Battery Current Draw Standby: 43 ma; Alarm: 440 ma Data Approved for TYCO Model DPV-1. valves and can be used with the fol- Dry Contact Rating lowing discontinued models: Central Trouble: 5 A @ 30 VDC. NOTICE Models AG and AF, GEM Models High/Low: 5 A @ 30 VDC.
5 Quick operation of the TYCO VIZOR F302 and F3021, and Star Models A. and A1. Installation Dimensions Electronic Dry pipe Accelerator does Refer to Figure 6. not ensure that the fire protection system will meet the water delivery time require- Maximum Water Pressure ment of the authority having jurisdiction 300 psi (20,7 bar) NOTICE. (following opening of the Inspector's When the VIZOR Accelerator is installed Test Connection). The sprinkler system Air Pressure 10 to 65 psi (0,69 to 4,48 bar) in accordance with these instructions, the designer has to be aware that water equipment's design provides reasonable delivery time is primarily determined Pressure Decay For Trip protection against limited radio frequency by the configuration and volume of the psi/sec.
6 (0,007 bar/s) sources. Intentionally subjecting the piping network, system air pressure at equipment to radio frequency sources the time of Accelerator trip, number and High/Low Pressure Settings could result in unintended operation orifice size of open sprinklers, and water Refer to Table B. of the dry pipe system. supply characteristics. It is essential for the designer to verify the impact VIZOR Environmental VIZOR Accelerator Indicators and of these site-specific factors on water Specifications Controls delivery time. VIZOR Accelerator Refer to Figures 1 and 2. NEMA 2, Indoor use Approvals 40 F to 120 F (4 C to 49 C) AC Power (Green LED): On steady Listings and approvals are under Battery Cabinet when AC power is present the name of Potter Electric Signal NEMA 1, Indoor use Trouble/Supervisory (Amber LED): Company Electric Dry pipe Accelerator 32 F to 120 F (0 C to 49 C) On steady for Trouble, 1 flash per (EDPA).
7 Refer to Table A for Listings second (slow) for low pressure, 4. and Approvals for use of the VIZOR Power Requirements flashes per second (fast) for high Accelerator with specific dry pipe Maximum A @ 120/220 AC pressure valves . Batteries (Separately ordered) Battery Trouble (Amber LED): UL and ULC Listed On steady for low battery Standard The VIZOR Accelerator is UL and 24-hour battery back-up provided Tripped (Red LED): Flashes for 30. ULC Listed per UL1486 for a maxi- by two 12-volt ( AH) Batteries seconds to indicate the solenoid mum system capacity of 1690 gallons (6397 liters) for a single nominal is open and the VIZOR Accelera- Optional tor is tripped; lights steady after 30.
8 K-factor sprinkler and a maximum 90-hour battery back-up provided working water pressure of 300 psi seconds indicating the solenoid is by two 12-volt (5 AH) Batteries closed (20,7 bar). S1 (Two-Position Switch): Up to SET to place the VIZOR Accelerator in service when air pressure match- es rotary switch setting; down to Valve Size OFF to take the VIZOR Accelerator Manufacturer/Valve UL FM. ANSI Inches Model Listed Approved out of service (DN). S2 (Two-Position Momentary TYCO 4 and 6 X X. Switch): Up to RESET to reset the Model DPV-1 (DN100/150) VIZOR Accelerator after activation;. down to SILENCE to silence the Central 3, 4, and 6 buzzer Model AG X See note.
9 (DN80/100/150). Model AF Buzzer: Indicates any trouble or su- Gem pervisory condition by sounding an Model F302. 4 and 6 X See note. audible alarm Model F3021 (DN100/150). Trouble Dry Contacts (Normally Star 4 and 6. Open): Activate on any trouble con- Model A X See note. dition such as low batteries or when Model A1 (DN100/150). S1 is pushed into the OFF position;. Note: For retrofit applications, the FM Approved Model DPV-1 application of activate on a loss of AC power after EDPA Electronic Accelerator Systems can be used for the specified 60 minutes discontinued valves . High/Low Dry Contacts (Normal- TABLE A ly Open): Activate when system LABORATORY LISTINGS AND APPROVALS FOR pressure is outside of the normal DRY pipe VALVE COMPATIBILITY setting of the rotary switch Patent No.
10 5,971,080. TFP1105. Page 3 of 12. S1 S2 AC POWER. SET RESET HAZARDOUS VOLTAGE MAY BE PRESENT. DISCONNECT POWER BEFORE SERVICING. TROUBLE /. SUPERVISORY. TROUBLE / SUPERVISORY BATTERY. LED INDICATOR CODES TROUBLE. ON STEADY: SYSTEM TROUBLE. SLOW FLASH: LOW PRESSURE TRIPPED. OFF SILENCE FAST FLASH: HIGH PRESSURE. 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.