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Site PreparatioVd Installation Instructions � TLS-350 UST Monitoring System ■1 TO THE INSTALLER! READ AND UNDERSTAND THIS INFORMATION C. MODULE/CONNECTOR.POSITIONS 2. Connector Position. AND LABELING. a.Identify all connectors according to their Most TLS-350 systems will be shipped with mod- slot location using the self-adhesive num- ules installed as ordered.If additional features are bering labels furnished with each module. added at a later date, modules will be field in- b.Once a device has been wired to certain termi- stalled. nals on a connector and the system has been In all cases,the position of the modules,their programmed,the wires from that device may not be relocated to other terminals without respective connectors and the devices wired reprogramming the system. to the connectors must be recorded to pre- vent improper replacement during installa- c. Once devices such as probes, sensors,alarms, tion or service.A circuit directory is adhered to etc. have been wired to a connector on a the back of the right-hand door for this purpose. module and the module and devices have (See Figure 10.) been programmed to a particular module slot, the connector cannot be moved to another For safety,the module slots have been designed so module in another slot unless the system is that modules from the intrinsically safe and power reprogrammed. areas cannot be interchanged. Fig- During module positions and the 3. Circuit Directory.A circuit directory(see Fig- g P ure 10, "Circuit Directory—Example") appears devices wired to each module are identified and inside the front-panel door. It should be filled stored in memory. If a connector is removed and out by the installer as the module connectors are reinstalled on a different module or if an entire being wired. module with its connector is removed and rein- stalled in a different module slot, the system will The following information should be recorded not properly recognize the data being received. for each slot: a. Module Type: Record what type of module 1. Module Position. has been installed in each slot, i.e., Probe/ Thermistor Interface, 4-Relay Output, etc. a. Record on the circuit directory the type of module in each slot location. b.Position:Record the physical location or type of device wired to each position on the connec- • b. Once a particular type of module has been for in that slot. installed in a slot,the system will always look for that type of module in that slot. No other In the example shown in Figure 10,slot 4 contains a • type of module may be installed in that slot Probe/Thermistor Interface Module. Position 1 on without reprogramming the system. the connector receives the + and - wires from the probe in tank 1,position 2 from the probe in tank 2, c. If a system contains multiple modules of a etc.Since this system has five tanks,a second Probe/ single type(i.e.,two Probe/Thermistor Inter- Thermistor Interface Module is installed in slot 5 face Modules),they may be swapped between and its position 1 receives the wires from tank 5. their respective slot locations,however,THE Positions on each module are numbered and each CONNECTORS MUST REMAIN WITH terminal is identified. Eight spaces for each slot THEIR ORIGINAL LOCATIONS, NOT have been provided on the circuit directory al- WITH THE ORIGINAL MODULES. though some modules accept fewer devices. 15