Franklin Electric SUBDRIVE CONNECT Serie Manuel Du Propriétaire page 14

INSTALLATION PLANNING
Typical Surface Pressure Boosting Application
Typical Surface Pressure Boosting Application
The above drawing illustrates how a typical surface mounted pump system should be arranged for a
pressure boosting application.
1. W W a a t t e e r r S S u u p p p p l l y y
2. C C h h e e c c k k V V a a l l v v e e
3. B B a a l l l l V V a a l l v v e e
4. P P r r e e s s s s u u r r e e R R e e l l i i e e f f V V a a l l v v e e : :
CAUTION
Risk of bodily injury or property damage.
•
Pumps can develop very high pressure in some situations. Always install a pressure relief valve
able to pass full pump flow up to 100 psi.
•
Install the pressure relief valve near the pressure tank and route to a drain capable of full sys-
tem flow.
5. P P r r e e s s s s u u r r e e T T a a n n k k : : Refer to
6. P P r r e e s s s s u u r r e e G G a a u u g g e e
7. P P r r e e s s s s u u r r e e T T r r a a n n s s d d u u c c e e r r o o r r S S e e n n s s o o r r : : Install in a vertical position after the pressure tank, and within 6 ft
(1.8 m) of the tank to minimize pressure fluctuations. There should be no elbows between the tank
and sensor.
8. V V F F D D
9. P P o o w w e e r r S S u u p p p p l l y y f f r r o o m m E E l l e e c c t t r r i i c c a a l l P P a a n n e e l l : : Single phase (shown) 208/230 VAC ± 10%
10. P P o o w w e e r r t t o o M M o o t t o o r r : : Three-Phase.
11. O O p p t t i i o o n n a a l l B B y y p p a a s s s s : : For system maintenance.
IMPORTANT: If the pump is equipped with a built-in pressure switch, the power wires from the VFD
must bypass the pressure switch and connect directly to the motor.
14
"Minimum Pressure Tank and Supply Pipe Sizing" on page 15.