Hayward HCP Pump HCP Series LITCPOMA10 - Page 11

In permanent installations, with the pump positioned at a higher level than that of the water, the suction pipe must be connected to a foot valve, and it is advisable for its longest stretch to be below the suction center line of the pump until it reaches the vertical pipe which coincides with it. In fixed installations, with the pump below the water level, a shut-off valve will be placed on the suction pipe and another on the discharge pipe. 5.3 HCP PUMP PIPING - SUCTION LIFT INSTALLATION Figure 5.3 Installation Diagram. NOT TO SCALE. MINIMUM SUCTION PIPE DIAMETER 4" LONG RADIUS ELBOW PREFERRED STRAIGHT RUN AS SHORT AS POSSIBLE BUT AT LEAST 6 TIMES PIPE DIAMETER (TO STABILIZE FLOW) FROM NEAREST FITTING TO STRAINER. SLOPE PIPE UPWARD TO PUMP. SUPPORT PIPE TO FILTER DISCHARGE PIPE DIAMETER 4". THE DISTANCE TO THE FIRST ELBOW MUST BE AT LEAST 5 TIMES THE PIPE DIAMETER. 4" UNION FROM POOL SUCTION PLUMBING. MAXIMUM SUCTION LIFT 10'. 4" UNION SUPPORT PIPE 5.4 HCP PUMP PIPING - FLOODED INSTALLATION Figure 5.4 Installation Diagram. NOT TO SCALE. FROM POOL SUCTION PLUMBING ISOLATION VALVES FULL OPEN WHEN PUMPING STRAIGHT RUN AS SHORT AS POSSIBLE BUT AT LEAST 6 TIMES PIPE DIAMETER (TO STABILIZE FLOW) FROM NEAREST FITTING TO STRAINER. SUPPORT PIPE TO FILTER DISCHARGE PIPE DIAMETER 4". THE DISTANCE TO THE FIRST ELBOW MUST BE AT LEAST 5 TIMES THE PIPE DIAMETER. 4" UNION LONG RADIUS ELBOW PREFERRED 4" UNION SUPPORT PIPE 11