Page 4
Pump & Pipe
Installation Instructions
INSTALLATION A:
DIRECT DISCHARGE TO THE OUTSIDE OF THE
BUILDING (Diagram A)
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. 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.
3. 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.
4. Attach a union or a check valve to the top of
the 1½” pipe. This will allow the pump to be
removed easily, should the need arise.
The path of the rest of the pipe and the details
of each installation will vary. Using sound
plumbing practices, route the discharge pipe to
an exterior wall via the shortest path with the
fewest turns. More turns will reduce the
pumping capacity. The pipe section exiting the
building should be on a downward slope so that
the water in the pipe will exit outside instead of
returning to the sump pit. Be sure to seal the
hole in the wall where the pipe exits, and prime
and cement or clamp all connections securely to
prevent leaking. (No check valve is needed with
this method of installation as long as you use
less than 20 feet of pipe.)
If you use more than a total of 20 feet of
pipe in the installation (including vertical
and horizontal runs), install a check valve in
place of the union. Make sure it is installed
with the arrow pointing up, or it will not
prevent the backflow of water. When a check
valve is used, a 1/8” hole must be drilled in
the PVC pipe above the Basement Watchdog
pump. Drill the hole at a 45° angle toward
the bottom of the sump to avoid splashing
water outside the sump pit. Make sure the
hole is above the water line and below the
check valve. If a hole is not drilled above the
pump, an air lock may prevent the pump
from operating.
PUMP
WIRE
PIPE ADAPTER
DRILL 1/8" HOLE
IF CHECK
VALVE USED
FLOOR
JOIST
MAIN
1/8” HOLE
BRICKS
AC PUMP
RIGID
1-1/2"
PVC PIPE
UNION
OR CHECK
VALVE
CHECK
VALVE
DRAIN TILE
SLOPE
PIPES
DOWN
BASEMENT
WATCHDOG
PUMP
1
2
3
4
Diagram A
!
DANGER
CAUTION
