SunEarth Cascade 2 Hot Water Station | 80 & 120 Gallon
SunEarth Cascade 2 Hot Water Station | 80 & 120 Gallon - 80 Gal is backordered and will ship as soon as it is back in stock.
SunEarth Cascade 2 Hot Water Station – 80 & 120 Gallon
Residential Solar Water Heating • Gravity Drainback • Integrated Hot Water Station
The SunEarth Cascade 2 Hot Water Station is a factory- assembled solar thermal water-heating package designed for residential domestic hot water applications. Available in 80-gallon and 120-gallon storage configurations, the system combines solar storage, circulation, heat exchange, and control components into an integrated installation.
Cascade 2 uses a gravity drainback design for freeze protection. When solar circulation stops, properly sloped collector piping allows the heat transfer fluid to drain from the exposed collector circuit into a storage reservoir. This helps protect the system from freezing without relying solely on glycol.
The Cascade 2 system incorporates a brazed plate heat exchanger to transfer heat between the collector fluid and potable water circuits. This arrangement separates the solar collection circuit from the domestic water system.
The integrated hot water station is designed to simplify installation by reducing the number of individual field connections and bringing key mechanical and control components into a coordinated assembly. Proper installation, piping slope, circulation, and controller setup are essential to reliable operation.
SunEarth publishes ICC-SRCC OG-300 certifications for specified Cascade 2 solar water-heating system packages. Certification of the final installation depends on the exact collector, storage, and equipment combination.
Available Models
| Manufacturer SKU | Storage Size | Configuration |
|---|---|---|
| 100004-14.1-80 | 80 Gallons | Cascade 2 Drainback HWS |
| 100004-14.1-120 | 120 Gallons | Cascade 2 Drainback HWS |
Key Features & Benefits
| Feature | Details & Benefits |
|---|---|
| 80 & 120 Gallon Options | Choose the solar storage configuration to suit the residential hot water demand and engineered system design. |
| Factory-Assembled Station | Reduces field plumbing and mechanical assembly work. |
| Gravity Drainback | Allows collector-loop fluid to drain into a protected reservoir when circulation stops. |
| Freeze Protection | Properly installed Cascade 2 systems have published ICC-SRCC freeze tolerance down to -50°F. |
| Brazed Plate Heat Exchanger | Transfers collected solar heat to the domestic hot water circuit while separating the two fluids. |
| Integrated Circulation | Provides solar and potable water circulation as required by the system design. |
| Differential Temperature Control | Controls solar collection based on temperature conditions in the system. |
| Service Connections | Facilitate commissioning, maintenance, and inspection. |
| Integrated Water Heating | Combines the storage and solar thermal functions into a coordinated package. |
| ICC-SRCC System Certification | Specified Cascade 2 system combinations are independently evaluated under the OG-300 program. |
Technical Specifications
| Specification | 80 Gallon | 120 Gallon |
|---|---|---|
| SKU | 100004-14.1-80 | 100004-14.1-120 |
| Storage Size | 80 Gallons | 120 Gallons |
| System Type | Indirect Drainback | Indirect Drainback |
| Heat Exchanger | Brazed Plate | Brazed Plate |
| Collector Area | Up to 160 ft², subject to design | Up to 160 ft², subject to design |
| Maximum Building Height | 30 ft | 30 ft |
| Potable Plumbing | 3/4" | 3/4" |
| Product Dimensions | Verify with Manufacturer | Verify with Manufacturer |
| Product Weight | Verify with Manufacturer | Verify with Manufacturer |
General Materials & Components
| Specification | Details |
|---|---|
| Manufacturer | SunEarth |
| Product Family | Cascade 2 HWS |
| Product Type | Solar Domestic Hot Water Station |
| Freeze Protection | Gravity Drainback |
| Heat Exchanger Type | Brazed Plate |
| Storage Tank | 80 or 120 Gallon, model dependent |
| Solar Controller | Differential Temperature Control |
| Solar Fluid | Compatible water or approved heat-transfer fluid per system design |
| Piping Requirement | Collector and return piping must permit complete gravity drainback |
| OG-300 Certification | Applies to qualified, model-specific system configurations |
Product Highlights
- SunEarth Cascade 2 residential solar water-heating station.
- Available with 80-gallon or 120-gallon solar storage.
- Gravity drainback provides passive freeze protection.
- Brazed plate heat exchanger separates solar and potable water circuits.
- Integrated pumping and temperature-control components.
- Factory-assembled design simplifies installation.
- Compatible with engineered SunEarth Cascade 2 solar collector configurations.
- Qualified system combinations carry ICC-SRCC OG-300 certification.
Technical Documents
- SunEarth 2026 Product Catalog (PDF)
- Cascade 2 HWS Specification Sheet
- Cascade 2 HWS Operations & Maintenance Manual
- Cascade 2 System Installation Manual
- Cascade 2 Warranty Information
Installation & Availability Notice: Drainback systems require proper collector pitch, piping slope, component sizing, and commissioning to operate correctly. Confirm the appropriate collector configuration, storage capacity, system specifications, and current product availability with SunEarth before ordering.
SunEarth Cascade 2 Hot Water Station | 80 & 120 Gallon
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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
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Great pump and great price. I actually ordered from a human being and they were great
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Thanks.
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Good go,, 👍👍👍
Great service. Happy to find the products I needed.
Great place to order from. No complaints.
