Installation 4
Figure 2: Typical installation with separate discharge pipes.
Figure 3: Typical installation with common discharge pipe.
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 Batter Backup Unit. 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 must be above the
BBU pump intake.
Typical installation,
assembled.
Not to scale.
Wiring omited for clarity.
* Supplied with the Battery Backup Unit.
Intems in italics must be purchased separately.
Both check valves
must be installed
on the pump side
of the wye.
1-1/2” PVC Upper
Discharge Pipe
(cut to fit)
U74-68 Hose and
Clamp Assembly
1-1/2” PVC Riser Pipe
(cut to fit)
45 degree Slip Wye
Optional 1-1/2”
PVC Pipe (cut to fit)
45 degee
slip elbow
Battery Backup
Switch*
Alternate Wye/Elbow
Setup
