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Installation <br /> Overview <br /> A simplified Veeder-Root Vacuum Sensor system installation in an STP sump is shown in Figure 1.Vac Sensor <br /> (VS) and Vac Float (VF) modules are assembled in a housing which is shown in Figure 2.A separate mounting <br /> bracket(see Figure 2) is easily attached to the STP riser to support the Vac Sensor housing.Approximately 12 <br /> inches of clearance is required below the pump manifold for the Vac Sensor system. Final vacuum connections are <br /> made once the housing and bracket are in place.A 1/4" NPT port into the interstitial space of the double-wall <br /> vapor return line,double-wall product line,and/or double-wall sump must be accessible in the sump. For <br /> installations requiring tank interstice monitoring,a riser must be in the same sump for the interstitial sensor. Field <br /> wiring connections of the Vac Sensor system components are sealed in a customer supplied sump junction box <br /> Q B). <br /> Epoxy seal per STP <br /> NFPA spec <br /> Product line <br /> Dual weatherproof vacuum fitting <br /> junction boxes w/ <br /> cord grip wiring <br /> entries <br /> Double wall sump <br /> vacuum fittingi ... .............. ........ .. ... <br /> t ----------------•.% Vapor return line <br /> vacuum fitting <br /> Double wall tank ••-,- i <br /> Tank interstitial i <br /> sensor vacuum fitting Four Vac Sensor <br /> Housing Assembly <br /> bracketed to riser <br /> Figure 1. Four Vacuum Sensor assembly w/lank interstitial sensor Installation Example <br /> 3 <br />