3
Installation
The Home Guard
®
MAX pump can be installed very easily as a standby to an electric sump pump (see sketches).
However, a check valve is required between the electric pump and the Home Guard
®
MAX.
Note 1:
Per the Uniform Plumbing Code and the Plumbing Codes of some states, installation of this product
requires the use of a RPZ backfl ow protection device. Contact your local plumbing or water authority for more
information regarding the requirements for your specifi c area.
Note 2:
Per the Uniform Plumbing Codes and IAPMO PS119, the discharge of the water-powered sump pump should
not be connected to the discharge of the primary sump pump.
STEP 1: Placement of the Pump in the Pit
Note: If your pit has a cover, it will have to be modifi ed to accommodate the Home Guard
®
Max pump.
1.1) Inspect the pit for debris and clean as necessary.
1.2) Place the pump in the pit, making certain that the inlet fi tting of the pump is at least 6” above the basement fl oor
or top of the sump pit. Ensure the pump is clamped securely to the primary pump discharge pipe. Mark the
location on the discharge pipe.
IMPORTANT
This pump is to be used as a backup to your primary pump. Make certain that there is no interference
between the two pumps, especially between the fl oat systems.
STEP 2: Float Stop Adjustment
2.1) With the Home Guard
®
Max pump in the pit, measure the desired fl oat ON position (this should be a few inches
above the ON level of the existing pump). The pump turns on at a water level of 2” to 3” below the upper fl oat
stop, depending on the incoming water pressure. Calculate the appropriate fl oat stop location based on this
distance.
2.2) The OFF level is determined by the buoyancy of the fl oat as well as the incoming water pressure, roughly 6” to
8” below the ON level. The OFF level must be above the suction screen of the foot valve. Adjusting the lower
fl oat stop will not change the OFF level of the pump. It is recommended to install the lower stop tight to the
bottom of the fl oat so that it cannot move on the fl oat rod.
2.3) Remove the pump from the pit and adjust the fl oat stops as necessary. Tighten all screws. Be sure to tighten
the lower stop properly so that it will not come off. If the lower stop comes off, the fl oat will drop off the fl oat rod,
rendering the pump non-operational and possibly damaging the pump.
2.4) Replace the pump in the pit at the same location on the primary pump discharge pipe as marked earlier (Step
1.2). This will ensure that the ON and OFF levels are consistent with the calculations.
STEP 3: Installation of the Discharge Piping
3.1) Glue the discharge pipe into the pump as shown in the fi gure below (reference SK2721B).
3.2) Per the Uniform Plumbing Codes and IAPMO PS119, the discharge of the water-powered sump pump should
not be connected to the discharge of the primary sump pump.
3.3) In order for this installation to work properly, a check valve must be installed onto the discharge line. The
following Zoeller check valves are recommended: 30-0100; 30-0101; 30-0102; 30-0103. Some local codes
require a union check with ball valve.
STEP 4: Installation of the Source Water Piping
4.1) Shut off the municipal water supply and plumb the tubing/piping into the municipal water supply line. This must
be branched off of a ¾" line and plumbed with ¾" tubing/piping to the Home Guard
®
Max . Do not use garden
hose or other fl exible hose/tubing. Install a shut off valve in the ¾" supply line to the Home Guard
®
Max. Use
the appropriate back-fl ow prevention for your jurisdiction.
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