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This section discusses the installation and wiring of the hardware required to enable the TLS console to perform ISD monitoring of the site's gasoline vapor recovery equipment (non -gas tanks are not monitored): • Air Flow Meter • Vapor Pressure Sensor • Smart Sensor Interface Module (8 input and 7 input w/embedded pressure versions) • NVMEM board - required • 4-Rel2y Output Module • Line Leak Detection • Dispenser Interface Module • Probe Interface Module All field wiring, its type, its length, etc., used for TLS console sensors must conform to the requirements outlined in the Veeder-Root TLS-3XX Site Prep manual (P/N 576013-879). Air Flow Meter Install one Air Flow Meter in the vapor return piping of each gasoline dispenser following the instructions in the ISD Flow Meter Installation guide (P/N 577013-796). Program the meter following instructions in this manual. Vapor Pressure Sensor Install one Vapor Pressure Sensor in the vapor return piping of the gasoline dispenser closest to the tanks following the instructions in the ISD Pressure Sensor Installation guide (P/N 577013-797). Program the meter following instructions in this manual. Installing TLS Console Modules - General Notes TLS consoles have three bays in which interface modules can be installed; Comm bay (left door) and Power and Intrinsically -Safe bays (right door). Smart Sensor modules are installed in the Intrinsically -Safe (I.S.) bay only (Figure 2-2). Most consoles will be shipped with modules installed as ordered. If additional features are added at a later date, modules will be field installed. In all cases, the position of the modules, their respective connectors and the devices wired to the connectors must be recorded to prevent improper replacement during installation or service. A circuit directory for Power and I.S. bay Interface Modules is adhered to the back of the right-hand door for this purpose. 2-1