Solartrope Supply    

Wholesale Solar Distributor                 (800) 515-1617
(714) 637-6226


 Solar Collectors (Domestic Water Heating)

We carry various types of domestic water heating collectors by Sunearth including Flat Plate, ICS (Integrated Collector Storage), and Thermosiphon.

 Flat Plate (Sunearth Empire Series)

The Empire Series Liquid Flat Plate Collectors–The Solar Professional’s First Choice.

America’s leading distributors and contractors have made the SunEarth Empire Series liquid flat plate collectors the solar professional’s first choice.  The Empire Series has everything that professional contractors demand in a solar collector: sleek appearance, high performance, versatility, ease of installation, and rugged field-tested durability. SunEath’s Empire Series collectors have over thirty-two consecutive years of engineering and design experience built into every product.  The Empire Series collectors define quality and value in the North American market.

The Empire collectors’ versatility make them the best choice for residential, multi-family or commercial systems. Large diameter Type-M copper riser tubes allow the Empire collector to be used in glycol forced circulation, drainback, or open-loop system configurations depending upon the climate and application.

Available with either 1” or 1.5” internal headers, the Empire makes multi-family and commercial projects simpler to design, install, and maintain. The Empire’s large commercial headers allow more collectors to be safely installed in a bank while continuing to accommodate normal expansion and contraction in the fully plumbed array.

SunEarth Empire Series collectors come in four sizes (3'x7', 3'x8', 4'x8', 4'x10') with a choice of two high performance absorber coatings (Black Paint and Black Chrome).

Solar water heating should never be a gamble. With SunEarth’s Empire Series collectors professional contractors rest easy. They know their customers will enjoy trouble free and persistent energy savings for many years to come.

Spec sheet 


Landscape Rack



ICS - Integrated Collector Storage

The CopperHeart integral collector storage system, or ICS, combines thermal collection and storage in a single unit. The CopperHeart is engineered to meet the international demand for a simple, durable and inexpensive domestic water heating system. The retrofit CopperHeart installation  typically serves as a solar preheater to the existing electric or gas water heater.  For new construction the backup heater of choice is most often a compatible tankless gas water heater. In non-freeze climates the CopperHeart may be used as the primary water heater. For durability, reliability and simplicity of installation and operation the CopperHeart ICS has no peers.

If properly installed and maintained the CopperHeart ICS can safely be deployed in areas that experience occasional mild freeze conditons.  SRCC Rated Freeze Tolerance:  20° F for 18 hours.

Click here for manual

Spec Sheet


Thermosiphon (SunSiphon)

A Thermosiphon unit is a completely passive design that relies on buoyancy effects to circulate fluid through the collectors as opposed to the pumps and controllers found in active systems.

When sunlight strikes the collectors in the SunSiphon system it heats the food-grade antifreeze within them, which then rises due to buoyancy into the jacket-style heat exchanger on the bottom of the storage tank. Here the antifreeze transfers heat into the tank, becomes cooler, and sinks to the bottom of the collectors to repeat the process.

During periods of no sun, the cool fluid in the base of the collectors is not heated, does not rise, and thereby stops circulation of the antifreeze. In this manner, thermosiphon units achieve the operational characteristics of active systems but without the pumps and controls.

Indirect Series Spec Sheet

Direct Series Spec Sheet

Click here for manual


Solar Tanks

We offer a variety of Rheem manufactured tanks both with and without heat exchange in various storage capacities.

With Heat Exchange



  • Brass drain valve

  • Temperature and pressure relief valve included

  • Collector feed and return fittings located at front of tank for convenient installation

  • Isolated tank design for better heat retention

  • High efficiency heating element

  • Rheemglas tank lining resists corrosion and prolongs tank life

  • Heat exchanger: copper tubing wrapped around and secured to the tank.  Double wall, vented design for positive leak detection

  • Cold water inlet brings cold water to tank bottom to prevent mixing with heated water

  • Anode rod equalizes aggressive water action for prolonged tank life

  • Cold water inlet, hot water outlet, relief valve and anode rod at top of tank for easy access and fast, economical installation

  • Automatic temperature control

    Spec Sheet             
    SunEarth Brand Spec Sheet                      

 Without Heat Exchange

  • Brass drain valve

  • Special threaded stud located near the outlet for attachment of tank sensors

  • Temperature and pressure relief valve included

  • Separate top or side connect models for convenient collector installation

  • Isolated tank design for better heat retention

  • High efficiency heating element

  • Rheemglas tank lining resists corrosion and prolongs tank life

  • Cold water inlet brings cold water to tank bottom to prevent mixing with heated water

  • Anode rod equalizes aggressive water action for prolonged tank life

  • Cold water inlet, hot water outlet, relief valve and anode rod at top of tank for easy access and fast, economical installation

  • Automatic temperature control

Spec Sheet

SunEarth Brand Spec Sheet


CopperStor DrainBack Tanks

The CopperStor represents a cost effective advance in drainback tank design. Fabricated from spun-end seamless copper tubing with no ferrous metal components, the CopperStor is nearly impervious to corrosion and allows for direct sweated connections without the need for troublesome dielectric unions. High temperature 15% silver brazed joints ensure high strength and are not affected by lower temperature flames used for sweating the connections. A 3/4" brass cap on the top of the units creates a simple and cost effective method for checking the fill level with a dipstick. CopperStor tanks are finished with a water-based matte black paint and wrapped in 1/2" Rubatex insulation to minimize heat loss and sound.

CopperStor drainback tanks have been designed for use with the SunEarth Cascade OG-300 solar water heating system, but they may be incorporated into most other professionally engineered drainback systems.

Typical Applications

CopperStor drainback tanks can be seamlessly coupled with the Ruud HE tanks to create a drainback version of our popular SolaRay closed loop design. Using the Ruud HE tank eliminates the need for the second pump on the potable water side that adds both cost and complications found in other drainback designs. The CopperStor drainback tank can easily be hung from the wall adjacent to the Ruud HE tank for easy and unobtrusive installation.

For retrofit applications where it is not economical to replace the existing storage tank, the Copperstor may be used in combination with our SunTherm heat exchangers to convert existing solar systems to freeze-proof drainback designs. The SunTherm may be used as a natural-convection heat exchanger as shown below or may be coupled with a pump on the potable water side for enhanced performance.

                             New Installation                                          Retrofit Installation

SunEarth Model Number Width (in) Length (in) Depth (in) Dry Weight (lbs) Fluid Capacity (US gal) Wet Weight (lbs) Max Pressure (psig) Connection Pipe Dia. (in)
DB-5.0 12 50 5 42 5.0 82 160 3/4
DB-7.5 18 50 5 56 7.5 117 160 3/4
DB-10.0 24 50 5 84 10.0 164 160 3/4

Control Units

Solartrope Supply is fully stocked with the latest technology in domestic water heating and pool heating control units.

Domestic Hot Water Controls

Steca - TR 0301U

SunEarth has partnered with Steca GmbH, a prime manufacturer of solar control electronics, to provide the U.S. market with the next generation of advanced differential controls.  SunEarth controls are distinguished by their technical sophistication, functionality, simplicity and competitive pricing.  All SunEarth controls are listed by ETL, a nationally recognized testing laboratory.

SunEarth controls are menu-driven and include a large LCD that provides the homeowner or commercial user with a variety of real time information about system operation and performance.

The TR 0301 U controller was specially developed for the North American market based on the TR 0301 basic controller. With its special certification (ETL label) from a Nationally Recognized Testing Laboratory (NRTL) in the US, the controller meets the safety standards and minimum requirements of the North American market.

A feature of the TR 0301 series of controllers is the animated graphic display, which offers a complete visualization of the solar energy system's operating status and solar circuit.

Product features

  • Compact, multipart designer casing
  • Maximum storage tank temperature
  • High level of operational safety through fault diagnosis
  • Temperature display °C / °F
  • Collector over temperature disconnection
  • Spring clamp terminals allow rapid and easy installation

Steca 0301 U Manuel 

Steca 0301 U Spec Sheet

Steca 0603 Spec Sheet

Steca 0603 Manual

GL-30 (Goldline Solar Domestic Hot Water Control)

Product features

  • Differential temperature control
  • 8-20ºF adjustable turn-on differential
  • 4ºF fixed turn-off differential
  • 110-230ºF adjustable high limit
  • 120/240 VAC input
  • 20A, 2HP output
  • 3 Year Warranty (provided by the manufacturer - see warranty statement for details)
Spec Sheet


Pool / Spa Control Units

GL-235 (Goldline Pool Heating Control)

Spec Sheet & Manual


The GL-235 is designed to meet the need for easy installation, dependable operation, and serviceability. The GL-235 incorporates unique, microprocesser based construction to ensure reliability and accurate performance. The GL-235 offers advanced operating features to provide differential temperature control, selectable high limit, programmable recirculation freeze protection, nocturnal cooling and optional booster pump control.

AUTOMATIC HEATING: If the collectors are warmer than the pool water by 4N or more, and the pool is below the selected desired temperature, the valve will rotate allowing heat collection. This heat collection will stop when the solar sensor falls to within 1.5NF of the pool temperature or the pool temperature exeeds the “desired temperature” set on dial.
AUTOMATIC COOLING: (Field selectable option) If the collectors are cooler than the pool water by 6NF or more, and the pool is above the selected desired temperature, the valve will rotate allowing cooling via the solar collectors. The heat dissipation will stop when the collectors rise within 3NF of the pool temperature or the pool temperature is lowered below the set desired temperature.

SINGLE SETTING FOR DESIRED TEMPERATURE: The GL-235 logic is set by a single dial adjustment with the desired pool/spa temperatures clearly indicated. The dial is calibrated with the temperatures from 70NF to a high of 104NF for quick and easy, user-friendly operation. The temperature set indicates set pool/spa temperature, and the GL-235 will automatically determine if the water should be solar heated or cooled, thus maximizing the system capabilities.

TERMINAL STRIP CONNECTIONS: For input power, and sensor inputs. Controls also have industry standard 3 pin connectors for both forward and reverse valve actuator operation and screw terminal connectors.

LED INDICATORS: Show the status of the system operation, Four highly visible LED’s show 1) power to the control, 2) power output directing valves and/or pump to collect heat (heating), 3) power output directing valves and/or pump to dissipate heat (cooling), 4) sensor fault indicator shows sensor(s) not operating properly.

GL-235 VALVE OUPUT: Rating is the industry standard 24 VAC. A jumper switches the output to 12VAC for compatibility with older valve actuators. Output is fuse protected.

RECIRCULATION FREEZE PROTECTION: (field selectable operation) turns the GL-235 output ON, directing warmer pool/spa water through the collectors when near freezing temperatures are reached at the collector sensor. The GL-235 will allow recirculation when the collector temperature rises to 42NF. Two 10K Ohm sensors are required for operation. One or more freeze snap switches are recommended if freeze recirculation protection is utilized. Important--see installation instructions before using Recirculation Freeze.

SYSTEM TEST SWITCH: Allows the user to manually override the automatic function of the GL-235 and verify operation.


Power: 105-130VAC, .5A 50/60Hz. or 192-250VAC, .3A 50/60Hz.

Output: Low Voltage 12/24VAC,20VA,1.7/.85A 3 pin connectors for both forward and reverse operation Model GL-235-LV-HV also has terminal block connections

Sensors: 2 required-thermistor, 10K @ 25NC/77NF. (snap switches recommended if recirculate freeze protection is used)

On differential: 4NF

Off differential: 1.5NF

High Limit: 70-104NF selectable via calibrated scale

Nocturnal cooling: On when collector 6NF less than pool and pool hotter than high limit, off when collector 3NF less than pool or pool cooler than high limit.


  • GL-235 (see above description)
  • Diverter Valve
  • 24 VAC Actuator
  • Sensors

This is an all in one combo pack for added savings!


SolarTouch *New from Pentair*
Spec Sheet
Quick Reference Guide

The smart, easy, efficient way to go solar!

Solar pool heating is a smart investment, made easier with the smartest, most efficient solar controller available: SolarTouch™ automation from Pentair®. The SolarTouch solar system offers the precision and reliability of full digital control. Once the digital thermostat is set, SolarTouch will monitor the temperature of the pool water and solar collectors, opening a motorized valve and sending filtered water to the collectors whenever the sun offers sufficient energy for effective heating. If temperatures drop, the system shuts the valve to keep cold water out of the pool. This effective monitoring of the sun's energy helps optimize energy use, earning the SolarTouch solar system the Eco Select brand.


  • Exclusive digital touch controls eliminate the imprecise settings and moving parts of mechanical dials.
  • Exclusive digital calibration of water and solar temperature sensors allow for more precise monitoring.
  • Power Center/Control Panel lets you set your pool temperature and solar temperature differentials with the touch of a button.
  • Exclusive to pool applications, the Solar Valve automatically drains the solar collectors when the pump shuts off. Durable polytetrafluoroethylene (PTFE) seal is maintenance-free for years of dependable service.
  • Motorized valve actuator—built to last with sturdy steel gears, a highly efficient low-voltage motor, service switch for flow direction and a weatherproof composite enclosure.
  • Automatic nocturnal cooling and recirculation freeze protection, with filter-pump timer override.
  • Integration with IntelliFlo and IntelliPro Variable Speed Pumps, for further energy savings


PVC Valves

PVC 2" Sch. 40

                                 2" Ball Valve                2" Clear Swing Check Valve

                         2" White Swing Check Valve     2" Spring Check Valve

2" 3-Way Diverter Valve

Pool Pumps

Intelliflo VS3050

VS-3050 & VS+SVRS Variable Speed Pumps

The world's most intelligent pumps are a "no brainer"

IntelliFlo Variable Speed pumps combine variable drive technology, on-board digital intelligence, and permanent magnet motors (used in hybrid cars) to reduce pump-related energy costs by up to 90%. The new IntelliFlo VS+SVRS model is the first swimming pool pump to feature a built-in Safety Vacuum Release System that detects drain blockage and automatically shuts the pump off.

An Eco Select Brand Choice: Standard pool pumps can consume as much energy as all other home appliances combined, often costing residential pool owners more than $1,000 per year! IntelliFlo pumps can typically cut energy use up to 90%, generally saving $620 to $1,360 in utility costs annually...more where rates are higher than average.*

*Savings based on comparison pump running between 6 and 12 hours per day at the national average of 15 cents/kilowatt hour in a 20,000 gallon pool. Actual savings may vary based on plumbing size and length, pump model, service factor, flow rates, and other hydraulic factors.


  • Ability to program exact pump speeds for specific operation - filtering, heating, cleaning, spa jets, water features and more - slashes energy costs up to 90%
  • SVRS model complies with Virginia Graeme Baker Safety Act
  • Built-in diagnostics protect the IntelliFlo pump from the most common causes of premature failure - overheating, freezing and voltage irregularities (SVRS model includes priming protection as well)
  • Safety lock-out feature (password protected) on SVRS model prevents pump speed settings from being changed by unauthorized personnel
  • Ability to set minimum and maximum speeds on SVRS model so IntelliFlo will only operate within the ranges set to help assure safe operation and long life
  • Compatible with IntelliTouch®, EasyTouch® and SunTouch® pool control systems
  • NSF Certified, UL and ETL listed as an ASME A112.19.17.2002 Device

Users Guide
Wiring Instructions
Quick Start Guide


Pump Station

The SolarStation is a pre-engineered assembly of quality components in compact enclosure with an advanced differential controller. A simple, labor saving, attractive solution for closed loop glycol solar systems.

Spec Sheet
Charging Instructions

Freeze Valves

We now offer freeze valves that do not require pressure behind them, great for SOLAR POOL or SOLAR DOMESTIC HOT WATER applications to combat potential freeze.

We offer two models, both are 3/4" threaded:

Freeze Valve 35

This valve starts to open at 39F, fully open at 35F, and closes at 43F, great for pool applications. This unit comes 3/4" female threaded  on both sides.
Spec Sheet

Freeze Valve 40

This valve starts to open at 45F and closes at 50F perfect for SDHW applications. This unit comes 3/4" male threaded. Spec Sheet

Lead Free Ball Valves (Compliant to California Health & Safety Code 116875)

3/4", 1", 1 1/2", 2" Full Port Ball Valve

Air Vents

1/8" and 1/4" NPT for SDHW Collectors


Vacuum Relief Valves

3/4" and 1/2" Vacuum Relief Valve

2" Vacuum Relief Valve for Solar Pool Applications

Hybrid Vacuum Relief Valves for Solar Pool Applications

Roof Flashing

Oatey Roof Flashing 12.5" x 9"                          Oatey Roof Flashing 18"x18" FHA Approved

Pressure Gauge

0-160 psi (0-1100 kPa)


Pentair SL-1D SL-2D


10K Plug Sensor 1/4" and 1/2"

10K Bolt-On Sensor for Hot Water Application

10K Sensor for Pool Applications

Probe Sensor for Steca Control Units

Freeze Snap Switch (Normally Closed)
Opens at 37.4F and closes at 42.8F

Sensor Wire

18/2 Sensor Wire - 250' per spool

Flow Meters

Blue White F-44750LB-12

  • Tough Polysulfone meter body resists high temperature and pressure
  • Brass adapters with sweat connection
  • Brass half unions
  • Direct reading permanent scale
  • #316 stainless steel float guide rod
  • Not recommended for direct sunlight

  • Max working pressure 150 psig (10.3 bar) @ 70F (21C)
  • Max fluid temperature 240F (115C) @ 0 PSI
  • Full scale accuracy at +/- 5%
  • Meter body material Polsulfone
  • Adapter material brass
  • O-ring seal viton
  • Approx shipping weight 1/2 lb
  • Pipe size 3/4"
  • 1-10 GPM (5.0 to 37.5 LPM)


SunEarth RexRack sets the structural standard for residential and commercial liquid flat plate collector mounting hardware.  RexRack is engineered to meet exacting contractor racking requirements for strength, simplicity, versatility, durability and cost.   Constructed of corrosion resistant 6063-T6 anodized aluminum, RexRack is the right  choice for challenging high wind and snow load conditions or everyday new or retrofit construction projects.

RexRack provides solar professionals with an incredibly strong, versatile and modular residential and commercial racking solution. RexRack incorporates telescoping front and rear legs to accommodate uneven roof surfaces and to provide a range of slope adjustment for the array. RexRack is constructed from corrosion resistant anodized 6063-T6 structural aluminum. All fasteners are stainless steel. RexRack is differentiated from traditional mounting systems by eliminating lateral runners on the roof surface. RexRack runners are fabricated from 6063-T6 aluminum and are located directly under the solar collectors. By relocating the runners to the backside of the collectors, a reinforced lattice is created between the two strut runners and the collectors that are clamped to them. The array itself becomes a single unified rigid body, much like unibody construction in newer automobiles. When the array itself is rigid, the rear legs need only carry the vertical load of the array, eliminating the cross bracing required for lateral loads in conventional racking systems. RexRack is the clear racking choice in areas that are prone to high wind loads.


RexRack - 2 Collectors Flush Feet

Landscape Rack

Landscape Rack Install Manual

UR Connectors

UR Connectors by 3M (100/box)

UY2 Connectors

UY2 Connectors by 3M (100/box)
Aonde Rod

Flexible Link Anode Rod
Replacement to give your tank a longer lifespan.
Designed to allow for easy installation even in tight spots.
Mixing Valves

Watts 70A 3/4" Lead Free

Watts LFN170M3
Lead Free Commercial Up to 2"
Installation Manual