ASME A112.3.4:2013 pdf download

ASME A112.3.4:2013 pdf download Plumbing fixtures with pumped waste and macerating toilet systems
4.1.3 Electrical requirements
The electrical system in the macerating unit shall comply with the applicable CSA Group or UL electricalstandards.
4.1.4 Water closets
Water closets that connect with the macerating system shall comply with ASME A112.19.2/CSA B45.1, orCSA B45.5-/IAPMOZ124.The performance of the water closet shall be tested accordingly prior to
connection to the macerating unit. The drain line carry test shall not be required.Water closets with anintegral grinder/pump system shall be tested as a system.
4.1.5 Lavatories and sinks
Lavatories or sinks that are a part of a pumped waste system or that connect to a macerating toilet systemshall comply with ASMEA112.19.1/CSAB45.2,ASMEA112.19.2/CSAB45.1,ASMEA112.19.3/CSA B45.4,or CSA B45.5-10/IAPMO Z124.10.The lavatory or sink shall not be required to conform to the drainageopening area and drain diameter of these standards.
4.1.6 Bathtubs
Bathtubs that are a part of a pumped waste system or that connect to a macerating toilet system shallcomply with ASMEA112.19.1/CSA B45.2,ASME A112.19.3/CSA B45.4,ASME A112.19.15,or csAB45.5-10/IAPMO Z124.10. The bathtub shall not be required to conform to the drainage opening areaand drain diameter of these standards.
4.1.7 Showers
Showers that are a part of a pumped waste system or that connect to a macerating toilet system shallcomply with ASME A112.19.1/CSA B45.2,ASME A112.19.2/CSA B45.1,ASME A112.19.3/CSA B45.4, orCSA B45.5-10/IAPMO Z124.10. Showers may also be field fabricated in accordance with the applicableplumbing code. The shower shall not be required to conform to the drainage opening area and draindiameter of these standards.
4.1.8 Macerating system housing
The housing tank assembly shall be watertight, leakproof, and protected from backflow of sewage.Thehousing tank shall be free from cracks, porosity, chips, flash, or other significant defects that affect theperformance, appearance, or serviceability of the system.The tank assembly shall be capable of
withstanding a hydrostatic pressure as described in Clause 5.4. The tank shall comply with the resistanceto staining, the wear and cleanability, and the chemical resistance tests of CSA B45.5-10/IAPMO Z124.10for plastic sumps.
4.1.9 Clamps
Clamps used to connect the fixture with the holding tank shall comply with the band requirements ofeither ASTM C1173 or CAN/CSA-B602.
4.2 General requirements
4.2.1 Fastening
A means to fasten the water closet to the holding tank shall be provided.
4.2.2 Return of discharged wastes
A check valve shall be provided with the macerating system to prevent the return of discharged wastes tothe macerating tank.
4.2.3 Accessibility
The holding tank shall allow access to the internal working components.
4.2.4 Function
The unit shall dispose of the contents of the water closet upon activation of the flushing mechanism.Themacerating pump shall be capable of discharging the ground-up waste a distance of 3.7 m (12 ft) invertical height as covered in Clause 5.2.
4.2.5 Hydrostatic pressure integrity
The check valve in the holding tank shall be capable of resisting a hydrostatic pressure test as defined inClause 5.3.
4.2.6 Minimum size
The minimum size of the pressure portion of the piping shall be 19 mm (0.75 in) inside diameter.
4.2.7 venting
The sump shall be vented according to the manufacturer’s instructions with a minimum vent size of notless than 32 mm (1.25 in) inside diameter.
Note: This is not considered to be a sewage sump.4.3 Pumped waste components4.3.1 Pump
The pump for pumped waste systems shall comply with either UL 778 or CSA C22.2 No.108 and meetthe performance requirements for permanently installed pumps.
4.3.1.1 Pump activation and function
The pump shall automatically activate to discharge the contents of the fixture when the fixture is used.The pump system shall prevent waste from rising in the fixture. The pump shall be capable of dischargingthe waste to a vertical height of 3.7 m (12 ft) as covered in Clause 5.2.
4.3.2 Discharge pipe
The discharge pipe from the pump of a pumped waste system shall be a minimum size of 19 mm (0.75 in)nominal.
4.3.3 Backflow prevention
A check valve shall be provided with the pumped waste system to prevent the return of discharged wasteto the plumbing fixture. The check valve shall be capable of resisting a 3.7 m (12 ft) column of water headpressure when tested in accordance with Clause 5.3.
4.3.4 venting not required
vent shall not be required for a pumped waste system.