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Velocity VDOT-PY3 Instruction Manual

Analog photoelectric smoke detector
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Instruction Manual
VDOT-PY3
Analog Photoelectric Smoke Detector
Before Installation
Please read these instructions carefully and keep for future reference.
The information in this document is subject to change without notice. For updates please refer to our website.
Do not use the products outside the rated power supply voltage range specified in
the Specifications. It may cause a fire or damage to equipment.
Do not disassemble, repair, or modify the products. It may cause a fire or electric
shock.
Note: Follow the requirements for the installation of the products in accordance with the Specifications. Otherwise it
may cause malfunction.
Note: Do not install the product in any location where oil, dust, iron powder, chemicals, or hydrogen sulphide may occur
or affect the product. It may cause damage to equipment.
Section 1 – INTRODUCTION
1.1
General description
The VDOT-PY3 is an attractively-styled, low profile, analog addressable, photoelectric smoke detector for use with the
Velocity MMP Control panel series in analog fire alarm systems.
This analog addressable photoelectric smoke detector has a specific detector address to provide exact detector
locations throughout the installation. This allows for constant monitoring of the detector sensitivity and reports the
detectors condition to the fire alarm control panel.
1.2
LED Indicator
LED Indicators for 360° visibility (OMNIVIEW
Green LED flashes in normal operation.
Red LED illuminates and Green LED flashes in an alarm condition.
1.3
VDOT-PY3 features
* Low profile, stylish appearance
* Soft addressing
* Low monitoring current
* Supplied with protective dust cover
* OMNIVIEW
TM
360
o
LED Indicator for polling and fire alarm indication
* Photoelectric detector, detecting visible particles of combustion
* Automatic compensation for smoke detector contamination
! CAUTION
! CAUTION
360°) of VDOT-PY3 operate as follows:
TM
1
ZETA ALARMS LIMITED
72-78 MORFA ROAD, SWANSEA, SA1 2EN
https://www.velocitydetection.com
GLT-337-7-1 Rev.0
May. 31, 2023

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Summary of Contents for Velocity VDOT-PY3

  • Page 1: Section 1 - Introduction

    Section 1 – INTRODUCTION General description The VDOT-PY3 is an attractively-styled, low profile, analog addressable, photoelectric smoke detector for use with the Velocity MMP Control panel series in analog fire alarm systems. This analog addressable photoelectric smoke detector has a specific detector address to provide exact detector locations throughout the installation.

  • Page 2: Section 2 - General Operation

    Section 2 – GENERAL OPERATION The VDOT-PY3 chamber consists of a light emitting diode (LED) and photodiode arrangement. The chamber contains a unique design which allows smoke to enter the chamber while preventing external light from affecting the photodiode. The VDOT-PY3 has chemically etched, stainless steel insect screen therefore reducing the ingress of insects and airborne contaminants.

  • Page 3: Section 4 - Terminals

    Section 5 – BASE MODELS There are 5 mounting bases that are available for use with the VDOT-PY3. In order to operate correctly, it is important to use the appropriate mounting base as indicated in the table below. Refer to the specific mounting base instruction manuals for details.

  • Page 4: Section 7 - Installation

    Section 7 – INSTALLATION Before installing These smoke detectors must be installed in compliance with the manuals of the UL Listed Velocity MMP Series control panel (VL-MMP/6, VL-MMP/10, VL-MMP/26). The installation must meet the requirements of the Authority Having Jurisdiction (AHJ).
  • Page 5 The smoke detector signals a dirty sensor trouble to the control panel when it reaches the preset limit. The dirty sensor trouble indicates the detector is in need of servicing. 7.2.2 Spacing of Smoke Detectors The recommended spacing of spot type smoke detector is maximum 9.1 m (30 ft.), based on the detector installation on a smooth ceiling at 3 m (10 ft.) high.
  • Page 6 7.2.5 Exposed solid joists Exposed solid joists may impede the flow of smoke to detectors. A joist is defined as greater than 10 cm (4 in.) in depth and spaced less than 91 cm (3 ft.) apart. The detectors must be mounted on the bottom of the joists. Figure 3: Smoke detector spacing —...
  • Page 7 7.2.6 Exposed beams Beams are defined as any members extending 10 cm (4 in.) or more down from the ceiling and spaced more than 91 cm (3 ft.) apart. The spacing of smoke detectors must be reduced in the direction perpendicular to the beam. Smoke detectors shall be located on the ceiling in each beam pocket if the ratio of beam depth (D) to ceiling height (H), D/H, is greater than 0.1, and the ratio of beam spacing (W) to ceiling height (H), W/H, is greater than 0.4.
  • Page 8 7.2.7 Sloped ceiling (peaked and shed) In the rooms with peaked ceilings, the first row of detectors must be located within 91 cm (36 in.)(measured horizontally) of the ceiling peak, but not closer than 10 cm (4 in.) vertically to the peak. Additional detectors, if required, must be located based on the horizontal projection of the ceiling and the type of ceiling construction.
  • Page 9 Procedure for installing Note: All wiring must be installed in compliance with the National Electrical Code, applicable local codes and the Authority Having Jurisdiction. Proper wire gauges should be used. The installation wires should be color coded to limit wiring mistakes and ease system troubleshooting.
  • Page 10 SLC Line impedance is 50Ω at maximum and the maximum length is 2km. Refer to the manual of UL Listed Velocity MMP Series control panel (VL-MMP/6, VL-MMP/10, VL-MMP/26) to determine correct maximum loop load and maximum loop resistance for devices connected to each loop.

  • Page 11: Section 8 - Testing

    Check that the detector gives an alarm condition within 15 seconds. Check the red LED indicator is on and the green LED is flashing on the VDOT-PY3 detector. If the red LED fails to light, check the power to the detector and the wiring in the detector base.

  • Page 12: Section 9 - Maintenance

    Section 9 - MAINTENANCE Notes: • Before cleaning, notify the proper authorities that the system is undergoing maintenance, and therefore the system will temporarily be out of service. • Disable the loop or system undergoing maintenance to prevent unwanted alarms. It is recommended that the sensor be removed from its mounting base for easier cleaning and that sensors be cleaned at least once a year.

  • Page 13: Section 10 - Specifications

    Section 10 – SPECIFICATIONS Table 3: Specifications Light Emitting Diode Detector Element Photo Diode Stand-by: Flashing green LED LED Visual Indicator Alarm: Solid red LED with flashing green Operating Voltage 20VDC to 38VDC peak System Voltage 35VDC Stand-by Current 200 µA Alarm Current (with red LED) 6 mA Sensitivity...

  • Page 14: Section 11 - Warranties

    Section 11 – WARRANTIES Zeta warrants to the customers that: all products supplied hereunder will be of merchantable quality and will comply with any specification agreed between Zeta and customer. it is not aware of any rights of any third party in the market which would or might render the sale of the products, or the use of any of the trade marks on or in products, or the use of any of the trade marks on or in relation to the products, unlawful.
  • Page 15 Annex A Quick Instruction of VDOT-AD2 This quick instruction of VDOT-AD2 is prepared to VDOT-PY3. Please refer to “VDOT-AD2 programmer instruction manual” for details. Preparation VDOT-AD2 requires two 9v PP3 batteries. a) Before inserting the batteries, confirm the VDOT-AD2 is switched off and check polarity of battery, or damage could result.
  • Page 16 Pressing any key at any time during the information collection cycle, forces the VDOT-AD2 to display the address, and await new address selection. Set new address +100, +10, +1 keys are used to select the new address. Press the [Set] key a) The buzzer sounds, and all LED’s are turned off.

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