AS 4032.4-2014 pdf free download

AS 4032.4-2014 pdf free download.Water supply Valves for the control of heated water supply temperatures
Part 4: Thermostatically controlled taps for the control of heated water supply tern peratu res.
4.3 WATERTIGIITNESS AT AMBIENT TEMPERATURE
When tested in accordance with the ambient temperature hydrostatic test of Appendix C, each thermostatic mixing tap shall not leak at hydrostatic pressures up to the lesser of 2000 kPa or 1.5 times the manufacturer’s specified maximum working pressure.
4.4 THERMAL SHUT-OFF
4.4.1 Ceneral
All thermostatic taps shall comply with Clauses 4.4.2 and 4.4.3.
4.4.2 Cold water isolation
When tested in accordance with Appendix D, the thermal shut-off under cold water isolation of each thermostatic tap. when pre-adjusted to supply mixed water at temperatures of 38 ±1°C. 45±1°C and the manufacturer’s nominated maximum setting. shall not exceed the temperature rises and durations given in Table 4.1 during both the period of shut-off of the cold water supply and immediately following the restoration of the cold water supply.
The mixed water shall stabilize to within 2°C of the preset temperature, in not more than 20.0 s following restoration of the cold water supply.
4.4.3 heated water i%olalion
When tested in accordance with Appendix D. the thermal shut-off under heated water isolation of each thermostatic tap, when pre-adjusted to supply mixed water at temperatures of 38 ±1°C, 45±1°C and the manufacturer’s nominated maximum selling, shall not exceed the temperature rises and durations given in Table 4.1.
The amount of water discharged following thermal shut-off under heated water isolation of each thermostatic tap shall not exceed 0.75 L within 5—35 s following heated water supply isolation.
The mixed water shall stabilize to within 2°C of the preset temperature, in not more than 20.0 s following restoration of the heated water supply.
4.4.4 Electronic taps—Power failure
If electrical power is not available when outlet water flow commences, the outlet water temperature shall not exceed 50°C.
If electrical power failure occurs while the tap is delivering water, then the outlet water temperature shall not exceed 50°C under steady supply pressures and temperatures (see Appendix D).AS 4032.4-2014 pdf free download.