Installation
"Separate Discharge"
NOTICE:
Check Valve Flapper(s) must swing AWAY and flow arrow(s) must point
AWAY from pump being protected.
The water level when the switch shuts off must be above the BBU
pump intake.
* Supplied with the Battery Backup System.
Items in italics must be purchased separately.
Slope DOWN
to outlet
1-1/2" PVC Upper
Discharge Pipe
(cut to fit)
U74-68 Hose and
Clamp Assembly
(Purchase Separately)
1-1/2" PVC Riser Pipe
(cut to fit)
Flow Arrow; Must point
AWAY from Pump
being Protected
FP0026-10
Check Valve
(Purchase
Separately)
Lower Discharge Pipe
1-1/2" PVC Pipe
(cut to fit)
Battery Backup
Switch*
Drill 1/8" Anti-Airlock
Hole
1-1/4" FNPTx1-1/2" Slip
Elbow*
PTFE pipe thread
sealant tape on all
threaded joints
Battery Back Up
Sump Pump*
Figure 2: Typical installation with separate
discharge pipes.
Not to scale.
Wiring omitted for clarity.
Sill
Floor
Joist
If the sump is small,
hang the BBU from
the Primary discharge
pipe on an angle bracket.
Primary Sump Pump
Check Valve
6782 0313a
"Common Discharge"
NOTICE: In this installation, if the Primary Sump Pump (PSP) does not have a
check valve installed below the wye, you MUST install a check valve for the PSP
as shown. This prevents backflow of water into the sump from the Battery Backup
System. Check Valve Flapper(s) must swing AWAY and flow arrow(s) must point
AWAY from the pump being protected.
The water level when the switch shuts off must be above the BBU pump intake.
Typical installation,
assembled.
Both check valves
must be installed
on the pump side
of the wye.
Optional 1-1/2"
PVC Pipe (cut to fit)
45º Slip Elbow
Battery Backup
Switch*
1-1/2" PVC Pipe
(cut to fit)
Flow Arrow; Must point
AWAY from Pump
being Protected
FP0026-10
Check Valve
(Purchase
Separately)
Lower Drischarge Pipe
1-1/2" PVC Pipe
(cut to fit)
Drill 1/8"
Anti-Airlock Hole
1-1/4" FNPTx1-1/2"
Slip Elbow*
PTFE pipe thread
sealant tape on all
threaded joints
Battery Back Up
Sump Pump*
Figure 3: Typical installation with common
discharge pipe.
Not to scale.
Wiring omitted for clarity.
* Supplied with the Battery Backup System.
Items in italics must be purchased separately
1-1/2" PVC Upper
Discharge Pipe
(cut to fit)
U74-68 Hose and
Clamp Assembly
(Purchase Separately)
1-1/2" PVC Riser Pipe
(cut to fit)
45 degree Slip Wye
AlternateWye/Elbow
Setup
45º Slip Street
Elbow
Primary Pump
Discharge Pipe
(cut to fit)
Thread to Slip
Adapter
Primary Pump
Check Valve
Flow Arrow; Must point
AWAY from Pump
being Protected
Primary Sump Pump
Discharge Port
6783 0313a
4