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Velocity VDOT-H3 Instruction Manual

Analog heat detector
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Instruction Manual
VDOT-H3/VDOT-H3-H
Analog Heat 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.
Note: Follow the requirements for the installation of the product 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-H3 and VDOT-H3-H is an attractively-styled, low profile, analog addressable, heat detector for use with the
Velocity MMP Control Panel series in analog fire alarm systems.
This analog addressable heat 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 detector's condition to the
fire alarm control panel.
The VDOT-H3 is a 8.3 °C (15 °F) rate-of-rise temperature heat detector with 57 °C (135 °F) fixed temperature alarm.
The VDOT-H3-H is a high temperature heat detector with 83 °C (181 °F) fixed temperature alarm.
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-H3 and VDOT-H3-H common 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
TM
360°) of VDOT-H3 and VDOT-H3-H operate as follows:
1
ZETA ALARMS LIMITED
72-78 MORFA ROAD, SWANSEA, SA1 2EN
https://www.velocitydetection.com
GLT-337-7-2 Rev.0
May. 31, 2023

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Summary of Contents for Velocity VDOT-H3

  • Page 1: Section 1 - Introduction

    The VDOT-H3 is a 8.3 °C (15 °F) rate-of-rise temperature heat detector with 57 °C (135 °F) fixed temperature alarm. The VDOT-H3-H is a high temperature heat detector with 83 °C (181 °F) fixed temperature alarm.

  • Page 2: Section 2 - General Operation

    Section 2 – GENERAL OPERATION The VDOT-H3 heat detector initiates an alarm in response to both 8.3 °C (15 °F) rate-of-rise temperature or a 57 °C (135 °F) fixed temperature alarm point. The VDOT-H3-H heat detector initiates an alarm in response to 83 °C (181 °F). Heat detector incorporates a highly linear thermistor circuit, with the thermistor mounted externally.

  • Page 3: Section 4 - Terminals

    Section 5 – BASE MODELS There are 5 mounting bases that are available for use with the VDOT-H3. For VDOT-H3-H, there are 2 mounting bases. In order to operate correctly, it is important to use the appropriate mounting base as indicated in the table below.

  • Page 4: Section 7 - Installation

    The operating temperature range is 0 °C to 38 °C (32 °F to 100 °F) for VDOT-H3 and 0 °C to 65.6 °C (32 °F to 150 °F) for VDOT-H3-H.
  • Page 5 7.2.1 Spacing of heat detectors Spot type heat detector spacing is based on detector installation on a flat smooth ceiling at 3 m (10 ft.) high. Spacing of spot type detector is shown in Figure 2. The coverage area of a detector is represented as a square. Actual detector coverage covers a circle whose radius is 0.7 times the listed spacing.
  • Page 6 Figure 3: Detector circle of coverage Listed Spacing 9.1m x 9.1m = 84m (30ft x 30ft = 900ft A : 7.6m x 10.4m = 79m (25ft x 34ft = 850ft B : 6.1m x 11.3m = 69m (20ft x 37ft = 740ft C : 4.6m x 11.9m = 54m (15ft x 39ft = 585ft D : 3.1m x 12.5m = 38m...
  • Page 7 When installed on the ceiling, spot type heat detectors must be located a minimum of 10 cm (4 in.) from side walls. When installed on side walls, the detector must be between 10 cm (4 in.) and 30 cm (12 in.) from the ceiling, as shown in Figure 5.
  • Page 8 7.2.2 Ceiling construction and heat detectors When installing heat detectors on other than flat and smooth ceilings or at ceiling height greater than 3 m (10 ft.), spacing must be adjusted. The table below shows the reduction in listed spacing to be applied when detectors are mounted on ceilings higher than 3 m (10 ft.).
  • Page 9 Figure 8: Heat detector spacing — solid joist construction (plan view) 7.2.4 Exposed beams Exposed beams may impede the heat flow to the detectors. Beams are defined as members extending 10 cm (4 in.) or more down from the ceiling and spaced more than 91 cm (36 in.) apart. The spacing of heat detectors must be reduced by 33% in the direction perpendicular to the beam.
  • Page 10 deep beams Beam deep beams and Heat detector wide spacing Beam S = 15 m (50 ft.) 2/3 S = 10 m (33 ft.) 1/2 S = 8 m (25 ft.) 1/3 S = 5 m (17 ft.) Figure 10: Heat detector spacing — beam construction (plan view) GLT-337-7-2 Rev.0 May.
  • Page 11 7.2.5 Sloping 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 12 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 13 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 14: Section 8 - Testing

    Tamper resistance feature The VDOT-UB series, VDOT-S6 Base, and VDOT-STB series of smoke/heat detector mounting bases have a tamper- resist feature that works in conjunction with the detectors. W hen this feature is enabled, the detectors cannot be removed from the base without the use of a small hexagonal wrench. To avoid unauthorized removal of the detector, turn the locking screw in the mounting base counterclockwise until the screw extends out about 4 mm (3/16 in.) from the rim of the base, as shown in Figure 15.

  • Page 15: 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 16: Section 10 - Specifications

    20 VDC to 38 VDC peak System Voltage 35VDC Stand-by Current 200 µA Alarm Current (with red LED) 6 mA VDOT-H3 57 °C (135 °F) Fixed Alarm Temperature 83 °C (181.4 °F) VDOT-H3-H 8.3°C (15 °F )/min. VDOT-H3 Rate of Rise Detection...

  • Page 17: 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 18 Annex A Quick Instruction of VDOT-AD2 This quick instruction of VDOT-AD2 is prepared to VDOT-H3 and VDOT-H3-H. 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 19 Type of device is assigned to the detectors as below. VDOT-H3: VDOT-H3-H: 134 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.

This manual is also suitable for:

Vdot-h3-h

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