Basepump Installation
For Models RB750; HB1000; CB1500
(&AVB)
Two General Types of Installations:
Note: Your situation may be quite
different from these GENERAL drawings. Basepump can be adapted to many
different applications including longer discharge runs, offset suction
pipes, installations closer to the floor, sealed radon covers, etc. Don't be
intimidated or discouraged by the simplified drawings here; if we tried to
present every possibility, we'd have hundreds of sketches and too much
confusion. Call or email us if you have questions.
Outdoor Discharge
(Independent to the Outdoors)
Indoor Discharge
(Connected to the Main Pump Discharge)
In this video, the homeowner had damage
caused by not only a main sump pump failure, but also a battery backup
sump pump failure. He ended up replacing both the old battery backup as
well as the main sump pump that died. He put in a new submersible,
electric sump pump and replaced the battery backup pump with a Basepump
water powered backup sump pump. This installation is very helpful in
seeing how a typical outdoor discharge installation of the Basepump works.
In this case, the homeowner opted for
the Model RB750-AVB, which included the Atmospheric Vacuum Breaker. Your
installation may or may not include that device, depending on local regulations,
your particular application, etc.
Basepump
Suction and Discharge Options
Some common examples of installations.
Under
Joist Discharge
Standard
Discharge
Basepump
mounted underneath ceiling joist with flexible discharge hose sloping
upward and out through exterior wall.
Basepump
mounted on side of ceiling joist; discharge straight to exterior.
Perpendicular
Discharge
Offset
Suction Pipe
Basepump
mounted perpendicular to ceiling joist, discharged at right angle from
pump through hole in joist to exterior.
Suction pipe
offset using two 45 or 90 degree elbows to clear obstacles or to make
installation easier in some cases.
Indoor
Discharge
Use
Male Adapter and Hose
Ejector Directly Into Tee
In some cases, it may be
necessary to connect the discharge from Basepump to
the existing discharge pipe from your main sump pump. The suction pipe
remains as a separate pipe, but the discharges run out together. The
drawing above illustrates how this can be done quite easily. The parts
you need are included with Basepump. You may screw Basepump directly
into the threaded opening in the side of the tee or screw in the male
adapter and use the hose that comes with Basepump. The
tee fitting you use this way will replace the discharge relief
tee that comes with the pump unit. Always make certain that there is a
good, working check valve in the main pump discharge somewhere below the
tee-in point that you are creating here. Otherwise, Basepump will send
city water down through the main pump and flood the basement.
Install with AVB Backflow Preventer
Note: When using the -AVB add-on, the discharges must
not be connected together indoors. The discharge for Basepump in this
application must be self-draining to the exterior. Any connection to a
drain outside MUST have an air gap to prevent blockage or back siphon-age to occur, rendering the AVB
inoperable. See
Back-flow Prevention.
Important!
Pre-Qualify
Your System:
Basepump
Water Supply Checklist
Pre-Installation,
4 Point Checklist
Before
installing, use this handy checklist to verify each item below. Improper
installation will result in reduced pumping capacity or pump may not
operate at all. Each pump model has slightly different requirements so
take note of each model number and the information associated with it.
Household
Water Pressure:
Minimum: 40 lbs. PSI
Maximum: 100 lbs. PSI
Compensate for normal pressure loss from test point to Basepump
location. Avoid excessive piping from "tee-in" location,
whenever possible. If incoming municipal water pressures exceed 95 lbs.
PSI, then it is necessary to "tee-in" after the Pressure
Regulator Valve (PRV) to protect the pump valve from damage.
1
Pressure: 40-100 PSI
Household
Water Flow- Extremely Important; DO NOT SKIP THIS TEST: You must be able to fill a five gallon bucket
with water from a hose spigot at the following rates:
RB750: 40 seconds or
less HB1000: 30
seconds or less
CB1500: 20 seconds or less
If it takes longer,
you may have a restriction that must be bypassed or removed to maximize
pumping capacity. If your reading is right on the border of these numbers,
you may select either one. Keep in mind that you can always get the
smaller one, but not always the larger one. Example: you get a reading of
30 seconds. You may choose either the RB750 OR the HB1000. The RB750 will
run at the higher end of its range 850-900 GPH, but the HB1000 will run at
the lower end of its range 950-1000 GPH. The difference may be very small
between them. "Frost-Free" spigots restrict flow by about
30% so adjust the time you measure by reducing it by 30%. (A 40 second
time would adjust to 28 seconds)
2
Flow 7-15 GPM
Type
of Piping: Must be
installed using copper, CPVC, OR PEX pipe (check local codes if unsure) in the sizes indicated below.
DO NOT connect to or install using galvanized iron pipe.
The smaller Inside Diameter and the potential for rust and debris to break
loose could hinder pump from operating properly.
Basepump Model: RB750: 1/2" or 3/4"
HB1000: 3/4" Pipe
CB1500: 3/4" or 1" Pipe
3
Piping
1/2"-1"
Pipeline
Restrictions: Basepump must be teed-in before any devices that restrict water
flow. Examples of such devices are: stop & waste valves, globe-type
valves, pressure
regulator valves (PRV), water conditioners, filters, etc. Water meter must
be minimum 3/4" standard (usually marked as 5/8"). A Dual Check Valve or an SVB
(Spill-Resistant Vacuum Breaker) Backflow device installed in the water
supply line before Basepump is often required and should pose no problem.
The more flow-restrictive, Reduced Pressure Zone (RPZ) devices will often prevent Basepump from
operating. We offer backflow devices in two versions as optional
equipment. One is a dual check valve and the other is a built-in AVB device. If you are unsure if you need one, take a look first and then
contact your local plumbing department if you have any further questions. Refer back to point #1 if incoming pressures exceed 95 lbs.
PSI
4
No
Restrictions
General Instructions:
This is NOT a complete
instruction manual. It is an overview of the most important details to
help you determine if Basepump is the right fit for your application.
Complete instructions are included with your pump.
Please READ all the instructions
that come with the product BEFORE attempting
to install Basepump. The average pumping capacity of Basepump may vary depending
on your municipal water supply, pressure, and any restrictions that may exist in
your piping. DO NOT connect Basepump BEFORE the Water Meter. This is stealing
water and is a crime. DO NOT OVER TIGHTEN FITTINGS WHEN CONNECTING TO BASEPUMP!!
DO NOT APPLY HEAT DIRECTLY TO BASEPUMP!! MAKE COPPER CONNECTIONS SEPARATELY AND
THEN THREAD THEM INTO BASEPUMP AFTER THEY COOL! Damage to the pump unit can occur if this is ignored
and will VOID THE WARRANTY!! Ask your plumber about adding a shut-off valve right
after the Basepump Tee-in point so you would be able to turn off the water to
the rest of the house and leave Basepump operational; GREAT FOR VACATIONERS.
Additional parts or supplies needed:
RB750 can be installed
using 1/2" or 3/4" copper pipe or equivalent; 1" PVC Suction
& Discharge pipe
HB1000 is installed using
3/4" copper pipe or equivalent; 1-1/4" PVC Suction & Discharge pipe
CB1500 can be installed
using 3/4" or 1" copper pipe or equivalent; 1-1/2" Suction &
Discharge pipe.
The following pipe and fittings are typically
used in the installation process. Your application may be different than
this, so you must plan accordingly.
Copper (or equivalent) pipe and fittings, usually a "T", a couple
90 Degree
elbows, and enough pipe to connect your existing water supply to the inlet
fitting of Basepump.
Full Flow "Ball" or "Gate" Valve.
Union fitting
Dual check valve or
Atmospheric Vacuum Breaker to prevent back-flow into the potable water
supply may be needed. Check with your local Plumbing Department to be sure.
Female adapter to connect to 3/4" threaded male
fitting on Basepump.
Clear PVC cement and pipe thread sealant
tape or paste.
PVC pipe for the
suction line in the proper size for your pump model and enough to fit your
application.
Power drill with
screwdriver bits and hole saw attachment (RB750:
1-1/2" HB1000:
1-3/4" CB1500: 2" ), especially needed for
outdoor discharge installations.
Phillips and Slotted Screwdrivers.
Utility Knife and Tape Measure.
Plumbing tools for the water supply pipe you are using.
