Direct Flat Plate Solar Water Heater

Direct flat plate solar water heater working principle:
Direct flat plate solar water heater is such a kind of thermosiphon solar water heating device, which flat plate collector placed below high pressure hot water tank. The tank and flat plate are connected with two circulation pipes to form a closed-loop solar water heating system, the whole system only use water, always designed as a direct system, so can’t use other liquid as circulation medium. By continuously circulating in this way, the water is heated directly inside flat collector and rise to be stored inside hot water tank.
Direct flat plate solar water heater characteristic:
1. Whole system certified by Solar Keymark (EN12976), flat plate solar collector certified by Solar Keymark (EN12975).
2. Multifunctional bracket for both flat and sloped roof installation.
3. Withstanding high pressure (0.6MPa), comfortable shower.
4. Suitable for hot area, where is no frozen risk area.
5. No Glycol, No Chemicals! 

               

Outer tank
Insulation layer
T/P valve
Magnesium rod
Sensor port
Inner tank
Electric heater
Bracket
Tempered glass
Header pipe
Back sheet
Insulation laye
Riser pipe
Absorber plate
Frame
Direct flat plate solar water heater Key Components

Direct flat plate solar water heater specification
1. Inner tank: Stainless steel SS304-2B / SS316L.
2. Outer tank: Galvanized steel / stainless steel / PVDF.
3. Insulation layer: Polyurethane foam, 41 kg/m3 high density.
4. Support: Painted galvanized steel / Stainless steel.
5. Flat plate solar collector: 2 size, blue titanium coating.
6. Working pressure: 6 Bar; Testing pressure: 10 Bar.
7. Capacity: 150L-300L.

Parameter table:
Model Tank capacity Absorber Area Person No. Loading Qty. (set)
(L) (m2) 20GP 40GP 40HQ
JFP-150 150 2 3 46 95 105
JFP-200 200 2 4 40 88 96
JFP-250 250 4 5 29 62 68
JFP-300 300 4 6 27 52 60

Necessary Accessories:
Temperature & Pressure relief valve
- Used for tank pressure release
- Working temperature: 90℃
- Working pressure: 8 Bar
 
Check valve
- Used for control one-way flow and prevent water from flowing back.
- Material: brass.
Item No. Size Quantity Item No. Size Quantity
812 007 067 3/4 inch 1 unit 812 007 002 3/4 inch 1 unit
 
Magnesium rod
- Used for tank protection
- Φ22 x 300mm length(small)
- Φ28 x 600mm length(big)
 
Insulated pipe
- Pipe: Corrugated stainless steel
- Insulation pipe
- Connection size: 3/4 inch
Item No. Size Quantity Item No. Size Quantity
812 801 002 3/4 inch, 1 inch 1 unit 812 007 054 3/4 inch 2 units
 
Brass elbow
- Material: Brass
- Connection size: DN22 ×3/4 inch
 
Brass elbow
- Material: Brass
- Connection size: 3/4 ×3/4 inch
Item No. Size Quantity Item No. Size Quantity
812 002 807 3/4 inch 2 units 812 002 808 3/4 inch 2 units
 
Coupling
- Used for flat collector
- Material: Brass
- Connection size: DN22 x DN22mm
 
Plug
- Used for flat collector
- Material: Brass
- Connection size: DN22mm
Item No. Size Quantity Item No. Size Quantity
812 010 004 DN22 mm 0 / 2 units 812 010 042 DN22 mm 2 units

Optional Accessories:
Thermostatic mixing valve
- Material: Nickle plated brass
- Cold water temperature: 5-29℃
- Hot water temperature: 50-95℃
- Regulating temperature: 35-55℃
- Working pressure: 0.03-1 Mpa
 
Expansion vessel
- Capacity: 18/24/60 L
- Max. working pressure: 10 Bar
- Working temperature: -10~90℃
- Pre-charge: 2 Bar
- Connection size: 3/4 inch
Item No. Size Quantity Item No. Size Quantity
812 007 052 3/4 inch 1 unit 812 003 012 3/4 inch 1 unit
 
Controller (luxury version)
- Used for pressure solar water heater
- Automatic operation
- Water temperature display
- Intelligent control electric heater
 
Controller (economic version)
- Used for pressure solar water heater
- Automatic operation
- Water temperature display
- Intelligent control electric heater
Item No. Voltage Quantity Item No. Voltage Quantity
812 003 609 110V/ 220V 1 unit 812 007 007 110V/ 220V 1 unit