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Alternate Energy Technologies EagleSun Installation, Operation And Maintenance Manual

Eaglesun solar water heating systems “dxr” drainback
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INSTALLATION,
OPERATION AND
MAINTENANCE
MANUAL
EagleSun™ Solar Water Heating Systems
"DXR" Drainback
This manual covers the installation, operation and maintenance of the system models below;
DX-50-26, DX-50-32
Alternate Energy Technologies, LLC
1345 Energy Cove Ct · Green Cove Springs, FL 32043
Toll-free: 800-874-2190

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  • Page 1 INSTALLATION, OPERATION AND MAINTENANCE MANUAL EagleSun™ Solar Water Heating Systems “DXR” Drainback This manual covers the installation, operation and maintenance of the system models below; DX-50-26, DX-50-32 Alternate Energy Technologies, LLC 1345 Energy Cove Ct · Green Cove Springs, FL 32043...
  • Page 2 DXR Drainback (this page left blank intentionally) Page 2...

  • Page 3: Theory Of Operation

    The system uses the sun’s energy to heat your water, reducing your electricity consumption. The EagleSun system will pay for itself many times over the life of the system. All installations require a connection to your existing home water system. Only a qualified installer, regulated by the local code compliance office or the “Authority Having Jurisdiction”, should do the installation.
  • Page 4 4 mounting brackets for each solar collector. All collectors specified in these systems are SRCC certified, manufactured by Alternate Energy Technologies, of the AE or MSC series, using Thermafin absorbers with Selective Crystal Clear Black coating. The Crystal Clear Black surface has been proven to withstand very high temperatures for long periods of time and will not flake or chip.
  • Page 5 5°F difference. SYSTEM PROTECTION VALVES The EagleSun drainback system is equipped with several thermal protection valves. A temperature and pressure relief valve, on the water heater, insures that excessive temperatures and system pressure is adequately relieved as needed.

  • Page 6: Installation Instructions

    DXR Drainback INSTALLATION INSTRUCTIONS Page 6...

  • Page 7: Pre-Installation Checklist

    Use of galvanized steel, CPVC, PVC, PEX or any other type of plastic pipe is prohibited. EagleSun drainback systems are designed to use 3/4” copper pipe (1/2” pipe is acceptable for single collector installations) for the collector loop and 1/2” copper for the tank interconnect piping. Type M may be used except where otherwise specified by the Authority Having Jurisdiction.
  • Page 8 DXR Drainback The hot water output to the house from the tank should be connected to the port labeled "Hot Outlet" on the top of the tank. Again, a dielectric nipple must be used where a connection is made between galvanized and copper pipes. (Dielectric unions are not recommended.) A tempering valve must be installed at this point to limit the temperature of water delivered to the home and prevent a scald hazard.

  • Page 9: Collector Location

    DXR Drainback COLLECTOR LOCATION The solar collectors provided with your EagleSun system have been certified for performance by the Solar Rating and Certification Corporation. Proper location of the solar collector(s) is important for maximum system efficiency. The collector(s) should be located in a section of the roof which is unshaded for the middle six hours of the day in each month of the year.

  • Page 10: Mounting Hardware Spacing

    DXR Drainback MOUNTING HARDWARE SPACING Solar Collector Dimensions Model No. AE-21 AE-24 AE-26 AE-28 AE-32 AE-40 MSC-21 MSC-24 MSC-26 MSC-28 MSC-32 MSC-40 Length (l) 85.187 97.187 77.187 85.187 97.187 121.187 86.125 98.125 78.125 86.125 98.125 122.125 Width (w) 35.187 35.187 47.187 47.187 47.187...

  • Page 11: Mounting Hardware

    DXR Drainback MOUNTING HARDWARE Provided in the EagleSun system, is a specially designed mounting hardware to speed collector installation. This hardware consists of ten LOCK-TIGHT hinge sets, four roof brackets, two rear struts, and bolts (see details below). a) After locating the mounting points, the mounting bracket holes should be drilled.

  • Page 12: Attachment Options

    DXR Drainback ATTACHMENT OPTIONS The collector shall be installed on a mount capable of maintaining tilt and azimuth to design conditions. There are three acceptable ways to secure the collector mounting brackets to the roof. Of these three methods, lag bolting is preferred since the wood swells around the lag so the hardware does not loosen over time.

  • Page 13: Pitch Pan

    DXR Drainback LAG BOLT MOUNTING In lag bolt mounting you must locate the center of the rafters along the top and bottom chalk lines. One method is to have one person on the roof and another in the attic. Using a hammer the person on the roof can tap the roof and determine where it is denser sounding.
  • Page 14 DXR Drainback ARRAY MOUNTING ON TILE / METAL ROOFS Tile and metal roofs are a little more difficult to mount solar collectors on but following this procedure will render a leak free installation. The solar panels are mounted on two rails located about a foot and half from the top and bottom of the solar collectors.

  • Page 15: Collector Piping

    DXR Drainback COLLECTOR PIPING The piping of the system should be considered before a final decision is made on how the collectors are mounted. Piping should be made of copper tube of the type meeting local codes, insulated with a flexible elastomeric pipe insulation or equivalent, and painted or wrapped where exposed to ultraviolet radiation (pipe insulation should be rated for 230°F).

  • Page 16: Piping Through The Roof

    DXR Drainback PIPING THROUGH THE ROOF Penetrations of the building through which piping or wiring is passed shall not reduce or impair the function of the enclosure. Penetrations through walls or other surfaces shall not allow intrusion by insects and/or vermin. Required roof penetrations shall be made in accordance with applicable codes and also by practices recommended by the National Roofing Contractors Association.
  • Page 17 DXR Drainback WATER HEATER PLUMBING NOTE: Prior to connecting the solar system to an existing water heater, be sure to turn-off the power to the water heater at the circuit breaker and drain the water tank to a suitable drain location. The installer should also check the quantity and condition of the anode rod(s) and recommend replacement if necessary.
  • Page 18 This EagleSun drainback system is a two-pump system, incorporating a high head pump to provide flow to the collectors while a secondary pump circulated potable water through the heat exchanger, transferring heat to the water heater.

  • Page 19: Electrical Installation

    EAGLESUN DIFFERENTIAL TEMPERATURE CONTROLLER The EagleSun Delta-T Control / Energy Meter, is designed for use on a solar thermal water heating system. It will monitor collector and storage water temperature sensors and operate their respective water pump(s) in order to maintain desired differential temperature between them;...

  • Page 20: Operation Instructions

    DXR Drainback OPERATION INSTRUCTIONS Refer to the diagrams on pages 30-32 for part identifications Page 20...
  • Page 21 EMERGENCY / SHUT DOWN PROCEDURE To shut down the EagleSun drainback system, simply switch the controller to the off mode or unplug the differential controller. Both pumps will stop and the water will drain out of the collectors and into the drainback reservoir. The system can be totally isolated by closing the isolation valves (valves “F”) should the drainback tank require offsite...

  • Page 22: Service / Maintenance Procedures

    DXR Drainback SERVICE / MAINTENANCE PROCEDURES Page 22...

  • Page 23: Troubleshooting Guide

    DXR Drainback TROUBLESHOOTING GUIDE The homeowner will know that the solar system is operating if both pumps are running and the water level in the sight glass is at the marked running level. This indicates that the pump has pumped the water from the reservoir through the collectors.

  • Page 24: Other Problems

    DXR Drainback The table below lists some of the possible problems, their cause, and their remedy. System owners are advised to contact the installer whenever a remedy requires some type of in-depth interaction with the solar system. PROBLEM POSSIBLE CAUSE REMEDY Insufficient Hot Water Insufficient Solar Energy...
  • Page 25 Grundfos UP 15-100F w/flange kit and UP 15-10 SU7P or Taco 009F5 w/flange kit and Taco 003B varies EagleSun DTC-ES-1 or Goldline GL-30 w/2 -10k sensors BD-75 Watts BD Series or equivalent PR-30 Watts 3L-Z9 (30 psi) or equivalent– included with the drainback tank...

  • Page 26: Fluid Quality

    Relief valves may discharge fluids at high temperature and/or pressure. FLUID SAFETY LABELING Included with your EagleSun drainback system is a set of labels which describe the component function. These labels are necessary to alert the owner of potential hazards. These labels are affixed by string/wire tie (on valves) and/or “peel-and-stick”...

  • Page 27: System Warranty

    AET has partnered with Service Net to provide a 5 Year Parts and Labor OEM warranty with every bundled AET EagleSun Solar Water Heating System. The installing dealer will have the ability to upgrade the end-user’s coverage from the base 5 year parts and labor warranty to a 12 year parts and labor warranty giving the end-user an additional 7 years of coverage.

  • Page 28: Returns Policy

    DXR Drainback Service Agreement Contact Information Contact information is listed below. Only Calls directly referencing the Service Net – AET warranty or ESA coverage should be fielded by Service Net Customer Service! All other calls should be directed to AET. PO Box 928 Jeffersonville, IN.
  • Page 29 DXR Drainback APPENDIX A Trigonometric Functions of Angles ANGLE ANGLE 0.0000 1.0000 0.0000 46.0 0.7193 0.6947 1.0355 0.0174 0.9998 0.0175 47.0 0.7314 0.6820 1.0724 0.0349 0.9994 0.0349 48.0 0.7431 0.6691 1.1106 0.0523 0.9986 0.0524 49.0 0.7547 0.6561 1.1504 0.0698 0.9976 0.0699 50.0 0.7660...
  • Page 30 DXR Drainback The collector and collector plumbing should be sloped back toward the drainback reservoir at 1/4" per foot minimum to allow the system to drain. Page 30...
  • Page 31 DXR Drainback The collector and collector plumbing should be sloped back toward the drainback reservoir at 1/4" per foot minimum to allow the system to drain. Page 31...
  • Page 32 DXR Drainback The collector and collector plumbing should be sloped back toward the drainback reservoir at 1/4" per foot minimum to allow the system to drain. Page 32...
  • Page 33 DXR Drainback Alternate Energy Technologies, LLC 1345 Energy Cove Ct · Green Cove Springs, FL 32043 PH 904-297-9369 · FAX 904-529-9837 www.aetsolar.com · info@aetsolar.com Document: Drainback_DXR_Retrofit_Manual Page 33...

This manual is also suitable for:

Eaglesun dx-50-26Eaglesun dx-50-32

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