ASME A112.19.13 pdf download ELECTROHYDRAULIC WATER CLOSETS
1.4 Electrohydraulic Water Closet An electrohydraulic water closet is a siphonic or wash-down water closet as described in ASME A112.19.2M with a nonmechanical trap seal. The water closet incorporates electrical motor(s), pump(s), and controllers to facilitate the flushing action. In this Standard, the term water closet means an electrohydraulic water closet unless otherwise indicated.
2.1.1 Water Closet. The water closet shall conform to the requirements contained in ASME A112.19.2M or ANSI Z124.4, as appropriate. It shall also meet the requirements of ASME A112.19.6.
2.1.2 Electronic and Electrical Components. The electronic and electrical components utilized in the water closet shall comply with the appropriate Underwriters Laboratories (UL) standard or portions thereof as may be indicated in this Standard.
2.2 Pump System The pump systems of an electrohydraulic water closet shall be tested as a water pump in accordance with UL 778. The applicable sections of UL 778 for compli- ance are:
(a) Construction, sections 1 through 8 and 10 through 28;
(b) Performance, sections 29 through 35 and 37 through 47;
(c) Manufacturing and Production Tests, sections 49 and 50;
(d) Rating, section 51; (e) Markings, sections 48, 52, and 53;
(f) Instruction, sections 54 and 55.
2.3 Pump Motor and Impeller The pump motor to the pump impeller coupling shall be nonmechanical and seamless. To minimize electrical hazards, the design shall provide a completely sealed chamber for the motor and electronics without the use of seals or O-rings.
2.4 Pump Housing Electric motors or pump enclosures shall comply with UL 746C and be plastic rated 94-5V or better as specified in UL 746C.
2.5 Jet Hose The pump jet hose, if provided, shall withstand a pressure of 25 ± 1 psi (172 ± 6.9 kPa) for 60 min.
2.6 Printed Wiring Boards Wiring boards shall comply with UL 244A-1994, sections 14.1 and 14.2, and UL 796.
2.7 Switches Switches shall be located in class 2 circuits only. NOTE: A class 2 circuit is a circuit with an open potential of no more than 30 V rms (42.2 V peak) supplied by either an inherently limited class 2 transformer or by a transformer and fixed impedance that together comply with all the requirements for inherently limited class 2 transformers in UL 1585.
2.8 Electrical Supply Cord Electrical supply cords shall be provided with 3 ft (0.9 m) minimum, 6 ft (1.8 m) maximum ofpermanently attached cord and an attachment plug for connection to the branch-circuit supply. The cord shall conform to UL 62 or UL 817. It shall be marked “Water Resistant” and include an equipment-grounding conductor.
Where the electrical supply cord exits the fixture, the surface shall be smooth, with rounded surfaces or provided with a grommet. Seals and gaskets shall conform to UL 157.
2.9 Pump Temperature Testing The pump shall be tested as described in para. 2.2(b), section 34 of UL 778, at the maximum duty cycle the pump will allow. 2.10 Wiring Harness Entrance and Location The wiring harness and electrical controls not en- closed in the pump housing shall be located above the flood level rim of the tank or reservoir and above the drains or overflows.
2.11 Life Cycle Test The electrical components and pump shall pass a 75,000 life cycle test. The test shall be performed on the water closet at the maximum cycle rate the electronic controls will allow. Upon completion of the life cycle test, the average volume per flush shall not vary more than 0.15 gal (0.57 L) or 10%, whichever is greater.
3 MARKING AND INSTRUCTION MANUAL
3.1.1 Water Closet. The water closet shall be legibly marked as specified in ASME A112.19.2M and other standards referenced in this Standard (see para. 1.3).
3.1.2 Pump. The pump shall have the following markings visible on it in its normal operating position and a second label visible on the exterior of the water closet or cord stating: WARNING: To reduce the risk of shock, connect only to a properly grounded type receptacle, protected by a ground-fault circuit interrupter (GFCI). The word warning shall be a minimum of 3 ⁄ 32 in. (2.4 mm) high.
3.2 Instruction Manual An instruction manual shall be provided that includes instructions for routine maintenance and operation.