Solar Water Heater

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We at Dxb Solutions the best Solar Water heater Supplier in Dubai, UAE would like to extend our congratulations on your decision to purchase a solar water heating system and join the millions who use this cost-effective and reliable choice for hot water.

Dxb Solutions Solar heater has positioned itself to be the supplier of choice for those contractors and customers who demand the utmost reliability, performance and cost-effective solar heating systems. We offers a variety of solar water heating systems to meet your needs and requirements.

Please take the time to read this manual thoroughly before attempting to install the system. The Solar water heating system appropriate for your geographical and climatic area will provide you an efficient, reliable source of free hot water for years to come when installed according to this manual. Thank you for doing your part in energy conservation.

Systems description
This manual describes the direct systems. This system uses potable water in the solar collector and it is open to the city pressures. This is designed for installation in areas where the air temperature falling below 41° F does not occur more than 3 to 4 times annually and this low temperature does not exceed an 8-hour duration.

Solar Collectors
Solar collectors are the heart of the system. Their main function is to absorb solar radiation and transfer the heat collected to the fluid circulating through the system. In the northern hemisphere the ideal orientation of Solar collectors are directly south and tilted to the degree of your local latitude. The collectors are mounted in an area (roof or ground) with a full solar window.

Solar collectors are made of all copper or copper aluminum absorber plate with high performance absorber coating, isocyanurate back and side insulation board, and safety tempered glass cover. All enclosed in a corrosion resistant galvanized steel frame. The collector absorber plate can easily be repaired or replaced if needed.

Solar water storage tank
The storage tank has a glass lining and an anode rod for maximum corrosion protection. Its internal manifold provides even distribution of heat and an injected foam insulation minimizes heat loss. The tank is available with or without an electrical element. 

Automatic controller
The controller is a differential temperature thermostat designed specifically to regulate a solar system operation. Its basic function is to monitor collector and storage temperatures and to automatically turn a small circulator ON or OFF at the appropriate temperature differentials. The controller can also provide additional functions, such as: system freeze protection (drain down / drain back or re-circulation), storage tank high temp. limit and positive OFF when the collector is below 80°F. 

Low power circulation pump
All vital components are fabricated from corrosion-resistant, high-grade stainless steel. This quiet, self-lubricating circulator is maintenance free, and requires very little energy to operate. (UL Listed. 18-month warranty)
Using the basic system diagram a variety of system types and sizes and can be installed.

Sizing the System
Storage tank: Select 15 to 20 gallon per person per day or 15 to 20 gallons per bedroom (min. 60 gallon tank)
Example: For four persons household or for four bedrooms home select 80-gallon storage tank
Solar collectors: Select one half to one sq/ft of solar panels per one gallon of storage
Example: 80-gallon tank will required 40 to 80 sq/ft of solar panels.

Installation
All plumbing, electrical and structural must be installed according to specific local codes.

Solar Collectors Tilt and Orientation
The ideal orientation of Sun Ray Solar collectors are directly south (northern hemisphere) and tilted to the degree of your local latitude, but any direction within 90° from south is acceptable if the total degree of tilt + the orientation angle from due south is less then 130°.

Minimum system installation standards

Install the system according to the diagram.
  • The collectors should be installed as close in proximity as possible to the storage tank.
  • The collectors should be mounted in an area with a full solar window.
  • The collectors should be mounted with a minimum of 1 ½’ air gap above the roof sheeting.
  • The collectors and pipe runs must sloped at least 4″ in 10 feet to allow a complete drainage.
  • The collectors should be mounted in parallel positioning.
  • The collectors mounting bolts should penetrate the roof rafters, or use a wood block under the sheeting.
  • All roof penetrations should be sealed.
  • Install collector array piping in a reverse-return configuration so that path lengths of collector supply and return are of approximately equal length.
  • Install a freeze protection valve on the return line according to the diagram (optional).
  • An air vent should be installed vertically on the highest point of the system.
  • An air vent cup must remain loose for proper operation. The Air vent should be insulated
  • The collector sensor should be mounted near the collector outlet.
  • For best protection the freeze sensor should be mounted on the absorber in the center of the collector’s array.
  • Sensor wires should not be exposed to direct sunlight.
  • Wire nuts connecting the sensors should be filled with silicon to prevent any moisture from penetration the sensor.
  • Use ¾” copper pipe for total runs of over 50 ft. Use ½” or ¾” for runs less then 50 ft.
  • Use long 90’s and soft copper tubing as possible to minimize flow restrictions.
  • All pipe runs should be insulated to an R-value of 2.6 or better. (7/8″ ID x 5/8″ wall) (Cold line 5′ from tank)
  • All exterior pipe insulation should be protected from UV radiation and moisture. (Paint with exterior latex)
  • Set the storage tank indoors close in proximity to 110V electrical outlets. Secure tank in event of an earthquake.
  • Install a shut-off valve for the solar system so that the cold water supply is not interrupted.
  • Install a T&P Relief Valve. The drain line should be discharged the to the outdoors no higher then 6″ above grade.
  • Install the pump on the collectors feed line with the arrow pointing to the direction of flow. (To collectors)
  • Install a thermosyphon prevention check valve on the collectors return line.
  • Install the tank sensor on the threaded stud located behind the cover plate of the bottom portion of the tank.
  • Mount the automatic controller on the tank or next to the 110V outlet.
  • Install the controller according to the installation instructions provided with the controller.
  • Follow the tank manufacturers instructions for high voltage connection of the electrical element and element timer.
  • Attach the warning and instructions labels provided with the system.

System Maintenance
Solar water heating systems require relatively little attention. But, as with any mechanical system, some basic maintenance is essential to keep the system functioning smoothly. The maintenance requirements of Sun Ray Solar water heating system are similar to those of conventional water heaters. The collectors, piping and storage tank should be checked for leaks, the system should be flushed periodically to remove tank and collected impurities (scaling in hard water areas). The systems should be checked at least twice per year for a proper operation of the pump, controller and sensors. The collector’s glass can be rinsed periodically to remove dust collected in order to improve collector efficiency.

For more info contact Ariston solar water heater or call us at +971 4 252 2966
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