Technical Specifications of a Low Pressure System 
Model 50L Black & White 100L Black & White 100L Green Series 150L Black & White 150L Green Series  200L Black & White 200L Green Series 250L Black & White 250L Green Series 300L Green Series 
Volume 50L In the tank 100 In the tank  100L In the tank 150L In the tank 150L In the tank 200L In the tank 200L In the tank 250L In the tank 250L In the tank 300L In the tank
Qty. of tubes 6 Tubes 12 Tubes 10 Tubes 18 Tubes  15  Tubes 24 Tubes 20 Tubes 30 Tubes  25 Tubes  30 Tubes 
Tube  58mmx1800mmx2mm 58mmx1800mmx2mm 58mmx1800mmx2mm 58mmx1800mmx2mm 58mmx1800mmx2mm 58mmx1800mmx2mm 58mmx1800mmx2mm 58mmx1800mmx2mm 58mmx1800mmx2mm 58mmx1800mmx2mm
Exterior tank material All exterior tanks comes with a 0.35mm white steel sheet. This is applicable to all models 
Interior tank material 0.41mm SUS304 stainless steel  0.41mm SUS304 stainless steel  0.31mm SUS304 stainless steel  0.41mm SUS304 stainless steel  0.31mm SUS304 stainless steel  0.41mm SUS304 stainless steel  0.31mm SUS304 stainless steel  0.41mm SUS304 stainless steel  0.31mm SUS304 stainless steel  0.31mm SUS304 stainless steel 
Outer tank diameter 470mm 470mm 470mm 470mm 470mm 470mm 470mm 470mm 470mm 470mm
Insulation 55mm Polyurethane Foam

Differences between high and low pressure systems are discussed on http://www.thesunpays.co.za/general_information.htm page:

Click here to download installation instructions

Stand:

  • 1.5 mm galvanized steel, painted black or green.
  • Adjustable. Installation is easy, especially for level surfaces or 26o roofs.
  • Without reflector.
  • Expected lifetime:15 to 20 years.

Operating pressure:

  • There is a breather in the top of the tank. IMPORTANT: This breather (vent) must be OPEN TO AIR. These systems boil easily, and the steam has to escape easily.
  • The pressure inside the house is gravitational, from the water in the tank only.
  • Tube seals: silicon rings. When inserting tubes, tubes should be lubricated with soapy water, NOT oil or Vaseline.
  • "Welded" by a high efficiency rolling machine, thus it cannot handle high pressures. 

Heating elements:

Standard 32mm screw in South African geyser element: 680W, 1kW, 1.5kW or 2kW, with pocket.
All these elements can be controlled by a thermostat or a SR609 programmable control panel.

SR 609 Electronic control panel:

This is a fully programmable switch. It features:

  • The current water temperature.
  • The time.
  • It can be set to heat the water in the tank electrically in three cycles of time and temperatures.
  • Default: if the water is cooler than 54oC between 4 and 5 am, the water will be heated to 60oC. The same happens between 5 and 10pm again.
  • A manual button raises the temperature up to the programmed temperature (usually 60oC), whenever needed.
  • There is a battery backup, so it will not forget its settings.

Glass Tubes

Model

58mm/1800mm

Length

1800mm 

Material

Borosilicate Glass 3.3 

Vacuum

P<5 x 10-3Pa

Glass thickness

2mm ± 0.15mm  

Outer tube diameter

58mm 

Inner tube diameter

47mm

Thermal expansion

3.3

Absorptive coating

Al/N - SS/Cu

Absorptive coefficient

>92% 

Emission coefficient

<8% 

Freezing temperature 

<-20o

Stagnation temperature

>250o

Net weight

≥2.4kg 

Idle sunning property parameters

≥ 175m2 x oC/kW

Solar irradiation for obtaining a preset water temperature

≤ 4.7 MJ/m2

Average heat loss coefficient

0.90 W/ (m2 x oC) 

CONTACT DETAILS

Landline

0860 SUNPAY

0860 786 729

012 734 0915

Mobile

082 515 1655

E-mail

sunpays@hotmail.com

sunpays2@hotmail.com

Physical address

Corner Ross and Short Streets

Cullinan

Operating Hours

Monday - Friday : 07:30 - 16:00

Saturday : 07:30 - 13:00

GPS Coordinates

S25.68027         E28.52323

S25o40.81620      E28o31.39380

S25o40'48.972"    E28o31'23.628"

 

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Copyright: The Sun Pays 2014

Designed and maintained by Sanet Strydom - DesignDynamics -http://www.designdynamics.co.za -studio@designdynamics.co.za

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