Description

Our 12V 20-Watt Solar Panels are perfectly matched for our S5 and D5 Solar Pumps!

What makes our solar hot water pumps unique, is that they can be connected directly to a solar panel. When the sun comes up and starts warming the water in your hot water system, the pump is able to handle the increased current flow. This way the pump slowly generates speed as the water slowly builds up its temperature.

Solar panels not only build current slowly as the sun rises, but every solar panel will also peak beyond its rated voltage at full sun.  This can be problematic, as many of the solar panels on the market these days are rated at a voltage higher than 12V.

Our S5 Solar Pump is a 12V pump that is designed to handle the slow buildup of current as it spins up to full speed. It will not be adversely affected by the peak voltage a 12V solar panel produces at full sun.

Occasionally what happens is that a customer will unknowingly connect their pump to a solar panel that has a voltage that the pump can run on until it reaches  a peak voltage outside of the pump’s range. Then, when the peak voltage is obtained, the S5 pump’s over-voltage protection will kick in and shut the pump down. This can result in the customer thinking that the pump is defective, but it is merely a safety feature built into the pump.

The S5 Solar Hot  Water Pump will only draw the wattage and amperage needed. It is only voltage that is important; therefore, if your wattage is higher than the pump’s minimum requirement, it will not affect the pump. In fact, often customers will choose a slightly higher wattage panel because it will spin the pump up to full speed a little earlier in the morning.

Specifications of our 12V 20-Watt Solar Panels:

• Max Power (Pmax) – 20W
• Open-circuit Voltage (Voc) – 14.4V
• Short-circuit Voltage (Isc) – 1.76A
• Optimum Operating Voltage (Vmp) – 12V
• Optimum Operating Current (Imp) – 1.67A
• Temp Coefficient of Pmax – -0.45%/C°
• Temp Coefficient of Voc – -0.37%/C°
• Temp Coefficient of Isc – 0.1%/C°
• Max Snow/Wind Load – 2400 Pa
• Max System Voltage – 1000V DC
• Dimensions – 14.2″ x 13.2″ x 0.7″

Uses of our 12V 20-Watt Solar Panels:

This solar panel can be used with most of our pumps and the It is perfect for an off-grid set-up or to reduce your electricity bill.
It works well with our S5 Solar Pump and when combined with our CWX Ball Valve, as pictured below, is perfect for customers who deal with thermo-syphoning at night when the pump shuts down.

Warnings:

1. This 12V 20-Watt solar panel generates electricity as soon as it is exposed to light. Any work including wiring should follow relevant safety standards and should be carried out by an appropriate and qualified person.
2. Do not damage or scratch the surface or the solar panel.
3. Expose the solar panel to sunshine without any shade.
4. Refer to the instruction manual for more details.

If you need more information or have questions about our 12V 20-Watt Solar Panels, please feel free to contact us. We’d be happy to answer your questions.