Parameter: Gas : LPG NG MG Start pressure:0.015-0.08pa Gas pressure: LPG 2800pa NG 2000pa MG 1000pa Features: 1) Flue pipe exhaust 2) Winter-summer shift 3) Switch of cold / hot water 4) Continuous control of gas and water 5) Safety devices for accidental flameout 6) Over water pressure and water temperature 7) Water drainage for antifreeze 8) lower water pressure start 9) With anti-blockage function 10) Brand name parts 11) Experienced technical staff 12) Environmentally friendly product 13) Guaranteed 14) International approval 15) with terperature display Description: Auto-cut-off protection: numerical control automatic ignition, the auto-cut-off protection will shut off gas supply immediately once flameout accidentally, and no gas leakage. Water-controlled automatic ignition: the water-controlled automatic ignition is applied for the unit, double-ignition device with high rate, the flame is sensed by ion, this sensitive control can be achieved, and easy and convenient to operate. Anti-dry combustion protection: once dry combustion occurs, the protection device will shut off gas supply automatically. Over-pressure protection: once water pressure is over than 1.0Mpa, the unit heater will relieve the pressure automatically to avoid damage. Low water pressure startup function: when water pressure is less than 0.025Mpa, the water heater can also startup, it is suitable to the user who living in high floor or lower water pressure. Anti-freezing protection: when temperature is very low, remove the water discharge valve to discharge cumulative water inside pipe to avoid the damage caused by freezing. Energy saving: advanced combustion system with the Winter/summer switch, the water temperature can be adjusted in the maximum range, save about 20% of energy.