Pump & Pipe
Installation Instructions
INSTALLATION B:
CONNECTION TO AN EXISTING DISCHARGE
PIPE (Diagram B)
Depending on your installation requirements, PVC
pipe lengths will vary. Cut the pipes and assemble
them as shown in photo #7.
Do not cement them
together until you are sure they are cut to the
correct lengths.
It is important to keep the
discharge pipes on both pumps parallel to each
other, so that the pumps remain flat on the floor
of the sump. More detailed instructions follow.
Unplug the main AC pump when installing the
backup pump to avoid electric shock. Failure
to do so could cause serious injury or death.
1. Cut a piece of 1½” rigid PVC pipe long enough
to reach from the bottom of the sump pit to
one (1) foot above the floor. Prime and
cement it to the 1½” pipe adapter, then screw
the adapter into the pump.
2. Install a check valve on the top of the PVC
pipe attached to the Basement Watchdog
pump. Make sure it is installed with the arrow
pointing up or it will not prevent the backflow
of water.
3. When a check valve is used, a 1/8” hole
must be drilled in the PVC pipe above the
Basement Watchdog pump. Make sure it is
above the water line and below the check
valve. Drill the hole at a 45º angle toward
the bottom of the sump to avoid splashing
water outside the sump pit. If a 1/8” hole
is not drilled in the pipe above the pump,
an air lock may prevent the pump from
operating.
4. If there is no check valve on the discharge
pipe of the main AC pump, one must be
installed at this time. Cut the discharge pipe
approximately one (1) foot above the floor.
Install a check valve on the top of the pipe
and tighten the bottom hose clamp. Now
prime and cement a small piece of 1½” PVC
pipe to the bottom of a “Y” connector. Prime
and cement the top of the “Y” assembly to the
discharge pipe with the “Y” extension facing
down toward the backup pump. Now connect
the bottom of the assembly to the check valve
and tighten the hose clamp.
Failure to install a check valve between the “Y”
connector and the main AC pump will cause the
backup system to not operate properly. A 1/8”
hole must also be drilled in the PVC pipe above
the main AC pump.
5. Secure the pump wire so that the plug on the
end will not fall into the sump. Attach the
wire to the pipe with a piece of tape.
6. Place the pump with the PVC pipe attachment
on the bottom of the sump floor next to the
main AC pump.
The pumps should not touch
each other.
Do not mount the pump to any
existing pipes; it should be placed on the
floor of the sump. A brick should be placed
under the pump if there are rocks or other
debris on the sump floor that may clog the
pump.
7. Connect a piece of 1½” PVC pipe above
the check valve of the Basement
Watchdog pump, and attach a 45°
elbow to that pipe. Extend another
piece of pipe to reach from the 45°
elbow to the “Y” connector on the
other pipe.
8. Prime and cement all pipe connections
securely to prevent leaking, and
tighten all the hose clamps.
Page 5
PUMP
WIRE
PIPE
ADAPTER
FLOOR
JOIST
MAIN
1/8” HOLE
A
BRICKS
C PUMP
RIGID
1-1/2"
PVC PIPE
CHECK
VALVE
1/8" HOLE
45º ELBOW
"Y" CONNECTOR
CHECK
VALVE
DRAIN TILE
SLOPE
PIPE
DOWN
BASEMENT
WATCHDOG
PUMP
Diagram B
4
5
6
7
2
3
CAUTION
!
DANGER
1
CAUTION
