A.
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Residential sewage pumping systems. A complete residential sewage pumping system shall include one
sewage grinder pump or one solids handling sewage pump; level controls,
fiberglass, polyethylene, PVC or concrete sump with removable cover
and vent flange; inlet and discharge flange, discharge pipe and check
valve. A weatherproof control box shall be supplied for mounting at
the sump location or remote from the sump location as required.
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1.
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Operating conditions.
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a.
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Solids handling sewage pumps shall be capable
of passing two-inch spherical solids with two-inch national pipe thread
(NPT) discharge.
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b.
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Sewage grinder pumps shall be capable of macerating
all material in normal domestic sewage and pump it through a discharge
of 1 1/2 inch.
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c.
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The pump shall have a minimum capacity of eight
gallons per minute at the operating conditions at the specific installation
location. Maximum output per pumping cycle shall not exceed 120 gallons.
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2.
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Motor. The motor shall
be capable of operating fully submerged and shall be provided with
an automatic reset thermal overload protector.
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3.
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Level control. Sump level
control shall be a sealed mercury switch in a float ball, pressure
switch or float switch.
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4.
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Electrical control panel.
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a.
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The control panel shall have a NEMA I enclosure
for inside mounting or a NEMA III enclosure for outside mounting.
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b.
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The panel shall have overload protection for
one leg for single-phase power and three legs for three-phase power,
manual reset button and a hands-off automatic switch. An electrical
underwriter's inspection certificate is required for the complete
electrical installation.
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5.
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Check valve and piping. A non-clog flapper-type or ball check valve shall be provided in
the discharge piping to prevent backflow. Discharge piping shall be
PVC pressure pipe minimum Schedule 40. All pressure pipe joints shall
be rigid. No flexible connectors will be permitted. A pipe union shall
be installed to access pump or check valve, or both.
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6.
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Sump basin cover. A separate
basin cover shall be supplied of the same material as the sump basin
and shall be provided with a sealing gasket. The cover shall include
mounting flanges, pipe discharge sealing flange, removable pump cover,
electrical cord grips and sealing and vent flange. A concrete basin
shall be provided with a raintight concrete cover.
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7.
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Sump basin. The sump
basin shall be fiberglass, polyethylene, PVC or concrete and shall
have a maximum storage capacity of 500 gallons. Septic tank and cesspools
shall not be utilized as a sump basin.
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8.
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Piping. All piping external
to the sump basin shall be PVC pipe conforming to ASTM specification
D2241, SDR26 (Class 160).
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9.
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Alarm. The sump basin
shall be equipped with a warning device to indicate when the basin
is filled to 75% of its capacity. Such warning device shall create
a visual or audible signal, or both, at a location frequented by the
owner or other responsible individual.
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B.
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Deletions from the BOCA National
Plumbing Code, 1993 Edition.
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1.
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The BOCA National Plumbing Code, 1993 Edition,
is further amended by deletion of the following sections: P-113.2,
P-116.4, P-121.0 and P-805.4.
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2.
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The code is further amended by deletion of the
following words from Section P-118.2; "shall be liable for a fine
of not less than (designate) dollars or more than (designate) dollars."
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