The test shall be performed at an ambient temperature of 70 ± 10 ☏ (21 ± 6 ☌).Ī) Connect the heaters gas regulator inlet to the gas supply with components sized to the regulator inlet, If the heater is electric, connect with wire sized to the current rating specified.Ĭ) Connect mixing valve to flow meter and flow meter to heater inlet with a thermocouple placed a minimum of 12 in (305 mm) upstream of inlet.ĭ) Connect thermocouple to the heater outlet a maximum of 6 in (153 mm) from outlet connection, then discharge to drain.Į) Adjust the inlet water temperature to the appropriate use temperature of 140 F (60 ☌) for storage heaters and 180 ☏ (82 ☌) for booster heaters. thermostat-monitoring sensor (e.g., current or voltage sensing device) to detect the point at which the thermostat actuates. temperature recording device accurate to ± 1 ☏ (± 0.5 ☌) If the inlet water temperature is 15 ☏ (9 ☌) lower than the outgoing water temperature, the temperature regulator shall become activated prior to the outlet temperature dropping 5 ☏ (3 ☌).
if provided, shall be 16 mesh (minimum 16 strands per 1.0 in
When intermediate transfer media is not supplied by the manufacturer, a permanently affixed label shall identify the intermediate transfer media to be used with the unit.ĥ.7.1 Louvers that may be subject to overhead splashes, spills, and drips shall be of a deflecting design, or they shall be readily removable and the space immediately behind the louver easily cleanable.ĥ.7.2 If electrical safety requirements prohibit the use of readily removable louvers, then such louvers need only be removable.ĥ.7.3 Louvers shall be deburred and shall have spaces large enough to allow for easy cleaning.ĥ.7.4 Screening on louvered openings. The intermediate transfer media shall conform to the requirements in 4.3. Single wall heat exchangers shall have one or more devices capable of automatically maintaining the pressure of the heat transfer medium entering the unit at a level less than the pressure of the potable water exiting the unit.ĥ.6.2.2 Single wall heat exchangers shall have a permanently affixed label identifying the intermediate transfer media, which must be used with the unit. NSF ANSI 5-2016 pdf download – Water heaters, hot water supply boilers, and heat recovery equipment.ĥ.6.2.1 The pressure of the heat transfer medium in a single wall heat excrianger sriaH e less man tue intended minimum operating pressure of the potable water system.
0 kommentar(er)
