Frequently Asked Questions

Do you have a question about SunMaxx or solar thermal systems? Just take a look at the list below…each question has been submitted by one of our solar thermal dealers, installers or clients, and answered by our team of professionally trained technicians and engineers.

Can’t find your solar thermal questions on the list below? No problem, just use the link below and submit your solar thermal question for our team to answer and post on the site.

I Am Installing A Drainback Solar Thermal System How Do I Facilitate Proper Drainback?

I am installing a drainback solar thermal system how do I facilitate proper drainback? In order for your system to "drainback" when the pump shuts off your collectors and piping must be sloped at 1/4" per 12" of run.  Be aware that visually your collectors will not be parallel with your roof ridge.

How Do I Determine Sun Angles Throughout the Year For My Location?

How Do I Determine Sun Angles Throughout the Year For My Location? The University of Oregon provides a free online tool that does just this. Plug in your location and this tool will provide a PDF with precise sun data. With this information you can determine the appropriate distances to place your arrays so as not to shade them during...

How Do I Balance The Flow of My Collectors?

How Do I Balance The Flow of My Collectors?  I have 2 arrays of 6. Use balancing valves, 1 on the cold side for each array. This will allow you to adjust the flow in each array and optimize your collectors output. SunMaxx Carries these for a variety of applications from small residential (2-7 Gallons Per Minute) all the way...

Do I Need To Mix The Glycol I Purchased From SunMaxx With Water?

Do I Need To Mix The Glycol I Purchased From SunMaxx With Water? No. You can commission your system with glycol strait out of the container. Our XMaxx Glycol Solution is not only premixed with distilled water but also made with bio-based raw materials and uses 20% less energy to produce than standard propylene glycol!

I Just Got Finished Installing My Solar Thermal System, Its About 3pm and The Sun Has Been Shining All Day. Should I Begin Commissioning The System With Heat Transfer Fluid?

I Just Got Finished Installing My Solar Thermal System, Its About 3pm and The Sun Has Been Shining All Day.  Should I Begin Commissioning The System With Heat Transfer Fluid? NO!!!  This is dangerous.  If your collectors have been sitting in the sun all day they have been heating up.  As soon as you introduce the Heat Transfer Fluid in...

What Are My Options For Heat Exchangers?

What are my options for Heat Exchangers? SunMaxx offers a wide variety of Heat Exchanger options for your solar system. External Brazed Plates are available for applications from 50,000 BTU's to 160,000 BTU's. SunMaxx also offers Air to Water Heat Exchangers from 60,000 BTU's to 220,000 BTU's allowing your solar system to be utilized in central forced hot air applications....

What Is A Pump Station And How Do I Size It?

What Is A Pump Station And How Do I Size It? SunMaxx's Pump Stations are an all in one solar hot water component featuring a circulator pump, a digital controller and valves engineered to keep your system circulating the solar heat transfer fluid through the collectors and into the storage tank. SunMaxx will size a pump station specific to your...