Minimum Pressure Tank And Supply Pipe Sizing - Franklin Electric SUBDRIVE CONNECT PLUS Manuel Du Propriétaire

INSTALLATION PLANNING

Minimum Pressure Tank and Supply Pipe Sizing

Minimum Pressure Tank and Supply Pipe Sizing
A VFD system needs only a small pressure tank to maintain constant pressure, although a larger tank
may be used.
• If adding a drive to a system with an existing large tank, refer to
SW1 – Position 5)" on page
• The pressure tank pre-charge setting should be 70% of the targeted system pressure.
NOTE: The included transducer measures up to 200 PSI, ensure that the pressure tank is rated ad-
equately. For larger flow rates, consult pressure tank manufacturer for tank size selection.
Refer to the following recommendations for best performance.
Maximum Pump Flow
10 GPM
20 GPM
30 GPM
40 GPM
Over 40 GPM
Minimum Supply Pipes
The minimum supply pipe diameter past the pressure sensor (transducer) should be selected not to ex-
ceed a maximum velocity of 8 feet per second (2.4 m/s) based on the flow rate of the system.
IMPORTANT: Water system piping should be performed by an experienced professional to ensure ad-
equate flow.
Maximum GPM (lpm)
11.0 (41.6)
19.6 (74.2)
30.6 (115.8)
44.1 (166.9)
78.3 (296.4)
122.4 (463)
176.3 (667)
240.0 (908)
313.3 (1186)
396.6 (1501)
489.6 (1853)
14
28.
Minimum Tank Size
2 gallons (7.6 liters)
4 gallons (15.1 liters)
4 gallons (15.1 liters)
8 gallons (30.3 liters)
20 gallons (75.7 liters)
Minimum Pipe Diameter
0.75 in.
1 in.
1.25 in.
1.5 in.
2 in.
2.5 in.
3 in.
3.5 in.
4 in.
4.5 in.
5 in.
"Bump Mode Configuration (DIP