Where is Nissan Qichen t70 warm water valve?

Between the main water tank and the hot air tank. The warm air water valve is the warm air switch of the automobile heater. The warm air working principle of Nissan Qichen t70 car heater is that the radiator in the heater is connected with the circulating water of the engine through the inlet and outlet pipes, and the water valve is the switch. The water valve is opened, the waterway is connected, the circulating water of the engine enters the radiator, and the fan blows the heat into the cab. The warm water valve is located between the main water tank and the warm water tank, which can adjust the specific amount of warm air, thus changing the attitude and temperature of warm air.