Xylem AC5660 Series A-C 1500 Vertical In-Line Pump - Manual (Page 16)

Check Explanation/comment Checked
Check that you have a foot valve of equal or greater
area than the pump suction piping when you use in
an open system with a suction lift.
Prevent clogging by using a strainer at the
suction inlet next to the foot valve. Make sure
that the strainer has an area three times that of
the suction pipe with a mesh hole diameter of
no less than 0.25 in. (0.64 cm).
Check that flexible piping is used on both the suction
and discharge sides of the pump when you use an
isolation base.
—
Check that a triple duty valve is installed in the
discharge line.
This valve serves as a check valve that protects
the pump from water hammer, and serves as an
isolation valve for servicing and for throttling.
Check that the pipeline has isolation valves around
the pump and has a drain valve in the suction pipe.
—
Use PTFE tape sealer or a high quality thread sealant
when you install the suction and discharge
connections to a threaded pump housing.
—
Typical installation
1
2
3
4
5
6
7
8
9
10
11
1. Compression tank (located in the suction piping)
2. Air separator
3. System supply
4. Circuit setter
5. Triple duty valve
6. Pump
7. Suction diffuser
8. Isolation valve
9. Pipe from boiler, chiller, or converter
10. Cold water supply
11. Reducing valve
Check that the control and safety devices have these characteristics:
• Properly sized for their purpose
• Placed correctly in the system before putting the system into operation
Installation
14 Series A-C 1500 Installation, Operation, and Maintenance Manual