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Introduction
In-Station Diagnostics (ISD) is designed to monitor the collection and containment of gasoline vapors by vapor
recovery equipment using the Veeder-Root (V-R) TLS-450PLUS console platform, sensor inputs, and dispenser
fuel events. The ISD feature provides test reports, generates alarms following test/equipment failures, and finally,
shuts down the site upon the occurrence of designated alarms.
This manual provides instructions to set up, and operate the special components of the Veeder-Root ISD
discussed in the Site Requirements section below. The ISD feature is an option for the TLS-450PLUS console
platform, and as such, many of the setup/operation instructions for non-ISD specific ATG tasks (e.g., tank
inventory, line leak detection, etc.) are covered in TLS-450PLUS/TLS4 Operator’s Manual or using TLS-450PLUS
Online Help.
Revision or reprogramming of the TLS may require notification of the local Certified
Unified Program Agency (CUPA).
Site Requirements
Below are the requirements for all vapor recovery systems except where noted.
1. TLS-450PLUS installed as per TLS-450PLUS Site Prep and Install manual 577014-073. Required TLS-
450PLUS modules are listed below.
a. A dedicated comm port is required by the Regulator for obtaining ISD reports.
b. An Input/Output Module (IOM) or optional 10 Amp Relay Module is required to shut down each gasoline
line or gasoline dispenser upon activation of certain ISD alarms. These alarms can also be assigned to a
Line or 10A relay in Automatic Events>Device Tasks setup to shut down the gasoline line or gasoline
dispenser - install as per instructions shipped with module. Setup ISD shutdown alarms in Automatic
Events section of this manual.
c. ISD requires dispenser transactions to be collected. Refer to TLS Consoles Point-of-Sale (POS)
Application Guide (P/N 577013-401) and TLS-450PLUS / TLS4 Operator’s Manual (P/N 577014-110).
Console DIM requirement is dependent on dispenser type installed on site.
d. Universal Sensor Module (USM) is required to monitor Air Flow Meters, Vapor Valve and Vapor Pressure
Sensor (up to 16 devices per module). USM/ATM Module Group for TLS-450PLUS (P/N 0332812-006)
may be used and or required for SVCM or PMC.
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One V-R Mag probe in each of the gasoline tanks being monitored - install as per installation manual shipped
with device, setup following instructions in TLS-450PLUS / TLS4 Operator’s Manual or using the TLS-
450PLUS Online Help.
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Air Flow Meters (one for each gasoline dispenser) - install as per ISD Flow Meter installation manual shipped
with meter, setup following instructions in this manual.
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Vapor Pressure Sensor (one per site) - install as per ISD Pressure Sensor installation manual shipped with
sensor, setup following instructions in this manual.
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Veeder-Root Vapor Polisher or Healy CAS - If installing the Vapor Polisher, follow the instructions in the Vapor
Polisher Installation and Maintenance Guide (P/N 577013-920), setup following instructions in this manual.
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The canister can only be installed in systems with a vapor recovery vent stack fitted with a UL Listed pressure/
vacuum (P/V) valve that complies with California Air Resources Board (CARB) requirements.
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The total leak rates for P/V valves, shall be less than or equal to: 0.17 CFH at +2.0 inches H2O, 0.63 CFH at -
4.0 inches H2O.
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If installing the Healy CAS, follow instructions in the accompanying manual(s). There is no TLS-450PLUS
setup required for the Healy CAS.
