Recently, several customers asked about how to apply solar connection to palm heat pump according to our installation manual “solar application 1 ” to utilize solar in the best way. Finally we help them to solve the problem. So we think maybe many our customers may have the same question.
Triaqua heat pump adopt many very advanced technologies in the world.
One of the most energy saving technology is to utilize the solar for both room heating and domestic hot water. If the sunshine is excellent, the heat pump don’t need to consume any electricity, except the circulation water pump.
In some degree, this function can also be used to cool down the solar system to prevent solar over heat.
Our Triaqua heat pump has a solar valve port G2, when the solar water is 5 degree higher than heat pump return water, the G2 will be powered on to switch the solar solenoid valve and let the room heating water to go through solar water to be heated.
> 1. The 3 way valve control wire need to be connected with G2 port. It is 220V.
> 2. The 3 way valve need 3 wires, 2 wires are to connected to any 220V power supply.(Can be connected with our Triaqua indoor unit L/N power supply), 1 wire is to connected with the G2 control signal.
> 3. The Triaqua solar sensor(Already in our indoor unit) need to be put into the solar tank.
>>> The connection method is noted at the foot of the application in manual page 36
1. Please check if the 3 way valve function is not malfunction. The 2 wires must always have power supply, the control wire is connected with G2 port.
2. Please check with voltage meter if the G2 has 220V power supply when solar tank temp is 5 degree higher than room heating returned temp. If the solar tank temp is not 5 degree higher, G2 has no power supply.
The following picture shows how to connect the solenoid 3 way valve to the solar control port of our Triaqua heat pump indoor unit.