3
Safety Feature
Compressor overheating discharge protection
The system will promptly stop the operation of the compressor to ensure safety in case the compressor
overheats due to the fault of the water heater.
Abnormal operation protection of the relay
The system will shut down all loads to prevent overvoltage, fire and other incident in case the water
temperature continues rising after the stop of pump due to the fault of the relay.
Abnormal operation protection of electronic expansion valve
The system will stop the operation of the compressor to protect the pump due to the electronic expansion
valve not working or not working properly.
High and low voltage protection
The system will promptly shut down all loads to protect the component and prevent the electric appliances
accidents due to the high or low voltage beyond the safety level.
Refrigerant leakage protection
The system will promptly stop the operation of the compressor protect the pump in case the leakage of the
refrigerant.
High water temperature protection
The system will shut down all loads to ensure safety in case any of the multiple sensors inside the water
heater reaches 90°C
.
High Temperature Limit Protection Switch
A high temperature limit protection thermal cutout is equipped on the
heat pump water heater. The switch cuts off the phase and neutral line
instantaneously and simultaneously to guarantee safety in case water
temperature reaches the high temp limited due to water heater fault. If
this happens, please contact local authorized dealer.
Temperature and pressure relief valve
The water heater has a temperature and pressure relief valve, model
number: NPT3/4 1.03(see Figure 1), Default setting by factory is at
1.03MPa and not adjustable
.
The valve must be installed in the
position shown in Figure 1. The valve will release the pressure
automatically when the pressure in the water heater exceeds 1.03MPa or the temperature exceeds 99°C.
.
Figure
2
Temperature and pressure relief
Relief valve
Drain valve
This valve must install with a drain pipe at its outlet, and the pipe should be installed downward in a
frost-free environment, the diversion pipe overflow water should be discharged to floor drain.
