CSA Approval Constant Temperature Water Heater Control Board BW-HK002R

gas water heater control board Function description 1) It works with a display. 2) It works with a ventilator. 3) It works with a on-off valve, a proportional valve and a section valve. 4) It is with a buzzer. 5) It has AC ionization flame signal detection. 6) Status keeping function:  If the nP menu was set as ON, after power on again, the system will return to the last status before the power is cut off. 7) Flue pipe block-up protection. 8) Malfunction protection and warning function. 9) Compliance with Standard: BS EN298: 2012. ANSI Z21.20 -2014. CAN/CSA C22.2 No. 60730-2-5-2014. More information you can click here Main technical parameters Working voltage range 90VAC ~ 120VAC Rated voltage 120VAC  60Hz Power frequency 50/60Hz±5% Rated frequency 50Hz Dielectric strength(V/1min) 1800V, 0.5mA, 3S Working ambient temperature  -10℃~70℃ Ambient temperature -20℃~70℃ Life cycle ≥50,000 times Temperature setting range 35-65℃ High temperature protection when the output water temperature ≥85℃ for 3S Pre- cleaning time 2S After cleaning time 20s Start-up water flow ≤3L/min Closing water flow ≤2.5L/min Ignition time 8±1S Cleaning time before 2nd ignition 3S Max. allowable No. of ignition  2 Valve moving pulse 0.5±0.05S 24V Valve open voltage ≥24V 24V Valve holding voltage ≥8.5V Output voltage of switch power supply 5VDC (with 300mA working current) 30±1.5VDC(with 510mA working current) 12±1VDC(with 110mA working current) Ion sensibility of flame detection ≥5.1MΩ Temperature detection precision ±2℃ Waiting time of reaching setted temperature ≤35S Water temperature overshoot range ±3℃ Timing tolerance ±1 minutes Post-purge time  20±2s Time to achieve safe shut down  ＜1s Trial for ignition period 7.5±1s