SunEarth Solar Empire Collector EP-21
SunEarth Solar Empire Collector EP-21 is backordered and will ship as soon as it is back in stock.
SunEarth Empire EP-21 Flat-Plate Solar Collector
Part Number: EP-21 | Nominal 3 × 7 ft
The SunEarth Empire EP-21 collects solar heat for residential and commercial water-heating systems. A copper absorber with moderately selective black paint transfers energy into copper fluid passages beneath low-iron tempered glass.
Its bronze-anodized aluminum casing and layered insulation support outdoor service while limiting heat loss. The EP-21 can be integrated into properly designed direct-circulation, glycol, or drainback systems, depending on the climate and application.
Product Highlights
- Copper absorber and piping: Conduct collected heat into circulating system fluid.
- Moderately selective black coating: Captures solar radiation at the absorber surface.
- Low-iron tempered glass: Admits sunlight while protecting the absorber.
- Insulated aluminum casing: Combines outdoor durability with reduced heat loss.
- Integral mounting channel: Accommodates compatible SunEarth mounting components.
Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer / Model | SunEarth / Empire EP-21 |
| Part Number | EP-21 |
| Collector Type | Glazed liquid flat-plate |
| Nominal Size | 3 × 7 ft |
| Length × Width | 76.2 × 40.2 in |
| Gross Area | 21.8 ft² |
| Aperture Area | 18.8 ft² |
| Dry Weight | 70 lb |
| Fluid Capacity | Approximately 0.7 gal |
| Absorber Plate / Fluid Passages | Copper |
| Absorber Coating | Moderately selective black paint (SOLKOTE®) |
| Absorptivity / Emissivity | 94% / 56% |
| Glazing | Low-iron tempered glass |
| Frame | Bronze-anodized aluminum |
| Insulation | Polyisocyanurate and fiberglass; R ≥ 12 |
| Maximum Operating Pressure | 160 psi |
| Maximum Operating Temperature | 300°F |
| Maximum Wind / Snow Load | ±90 psf |
| Design Flow Rate | 0.62 gpm |
| Pressure Drop at Design Flow | 0.003 psi |
| Maximum Flow Rate | 12 gpm |
| Standard Connection | 1 in nominal copper sweat |
Cold-weather installations require a system designed for freeze protection. Final design, installation, and operating limits must follow manufacturer instructions.
Warranty
SunEarth's collector manual states a 10-year limited warranty for the Empire EP-21. Coverage, exclusions, and claim requirements are subject to the manufacturer's written warranty. See Link Below.
Technical Documents
SunEarth Solar Empire Collector EP-21
Payment & Security
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Let customers speak for us
The mini ultra boiler i purchased was built very strong and worked great after being installed.
Price was right
This is a great unit for anyone who is on a well!!
Great pump and great price. I actually ordered from a human being and they were great
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We live in an old 2 story brick farmhouse built in 1814! This unit replaced an Outdoor Wood Boiler with a 750 gallon tank. It was about 30 years old and last winter the tank rusted thru and busted.
We have 11 cast iron “American Radiators” and they heat the house well.
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The most impressive part is the Outdoor Temperature sensor. When it’s not that cold outside, the unit doesn’t turn on all the elements at once and slowly heats the water which saves a lot of electricity in the warmer months!
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Thanks.
The boiler works great easy install. But the tech support we got hold of was in French so not a lot of help.manual was easy to follow on wiring
Easy purchase - exactly what I needed
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I’ve been using Everflux for some years now and it’s simply the best there is.
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Once again, great quick service
Good go,, 👍👍👍
Great service. Happy to find the products I needed.
Great place to order from. No complaints.
