2000 Hook-up Book

aa

a a a HOOK-UP DIAGRAMS When multiple pumps in parallel are used to meet the load, Pump #1 fills first and Pump #2 operates at full load. Supply piping is arranged to reduce simultaneous discharge. Better staging occurs when Pump #2 is elevated 3” to 6” above the floor. Intake pipe to Pump #3 is located above the Filling Head required by Pump #1 & #2 so it will function as a “Standby” and only operate on peak loads or in the event of primary pump failure. Figure II-68 Installation of Pump/Trap Combination when Vertical Space is Limited Figure II-69 Multiple Pressure Powered Pump Hookups for Staged Operation and Standby Duty Pressure Powered Pump #3 Pressure Powered Pump #1 Pressure Powered Pump #2 Receiver Condensate Supplies Vent Return Exhaust PPF-Top Pressure Powered Pump Reservoir Strainer Balanced Pressure Thermostatic Air Vent Thermo Dynamic Steam Trap Return Main Float & Thermostatic Steam Trap Drain to Safe Place Check Valve Check Valve Motive Supply Drain to Safe Place Check Valve Condensate from Process Equipment

a aaaa aa

a Return

a aa

117

aa a