As long as The Sun Rises...

Solar Water Heaters With Evacuated Tubes

ABOUT US
KUZEYMAK is the leading company in heating and cooling sector of Turkey since its
foundation in 2002. The company is located in Mersin, the south east coast of Turkey
and provides water and space heating solutions to his customers all over the world.
Kuzeymak is the first company introduced vacuum tube technology to Turkey.
Kuzeymak takes its power from the country-wide sales and service network by its 800
dealers over the whole country.
Kuzeymak improves its products and service quality continuously and has a wide
range of product spectrum; hot water heater tanks, solid fuel boilers, radiators and
ecoboilers in addition to solar water heater with evacuated tubes.
Kuzeymak has the certificates of CE, ISO9001: 2008, ISO14001: 2004. It also exports to
over 20 countries; USA, Iran, Netherlands, Montenegro, Morocco, Azerbaijan, Syria etc.
PROPERTIES of EVACUATED GLASS TUBE

The evacuated tubes are produced from nested glass tubes. After completing the nesting process of tubes,
the air is depleted and the tube is vacuumed via the hole below the tube. Later, this hole is heated and welded.
Thus, any vacuum leakage is prevented.

One piece of vacuum tube can produce averagely 40 kcal/h energy. This value increases by higher solar radiation,
decreases by lower solar radiation. The average value 40 kcal/h is used for the calculations.
Evacuated Glass Tube
Support Clip Vacuum Water Input - Output
Absorber Layer Outer Glass Surface
Hot
Water
Cold
Water

PROPERTIES of EVACUATED GLASS TUBE VACUUM TUBE FLAT-TYPE THE RATIO OF VACUM TUBE
LENGHT (mm) 1800 MONTH COLLECTOR COLLECTOR COLLECTOR TO
OUTER DIAMETER of TUBE (mm) Ø47 MJ/M 2 MJ/M 2 FLAT-TYPE COLLECTOR
INNER DIAMETER of TUBE (mm) Ø37 JANUARY 53 13 4.08
THICKNESS of GLASS (mm) 1.6 FEBRUARY 123 54 2.28
THERMAL EXPANSION (°C) 3.3X10 -6 MARCH 223 116 1.92
MATERIAL Borosilicate APRIL 310 180 1.72
ABSORBANT SURFACE MATERIAL Al-N/Al MAY 387 232 1.67
ABSORPTIVITY >93% JUNE 393 243 1.62
REFLECTIVITY >7% JULY 437 267 1.64
PRESSURE OF VACUUM (Pa) <5x10 -3 AUGUST 357 223 1.60
TEMPERATURE of EMPTY TUBE (°C) 250 SEPTEMBER 240 143 1.68
THERMAL HEAT LOSS COEFFICIENT (mm) Ø25 OCTOBER 163 84 1.94
2 NOVEMBER 67 23 2.91
RESISTANT to HAIL (W/m °C) <0.8
LIFE of TUBE (Year) 15 DECEMBER 47 10 4.70
THE COMPARISON of KUZEYMAK Solar Water Heaters with Flat-Type Solar Collectors
KUZEYMAK solar water heater system tubes produced from nested glass tubes. The heat loss is minimized due to vacuum between two tubes. The outer tube
glass is resistant to any hard weather conditions. Transparent and durable inner tube is made of a special combination of glass and its surface is coated by a
special selective coating. Through this selective coating, 93% of sunshine can be absorbed perfectly by tubes and converted to heat. The reflection ratio of
sunshine is reduced to minimum values (7%).

Due to vacuum between two glass tubes, there are negligible heat losses by conduction or convection. Vacuum process prevents the heat losses caused by
rainy, snowy, windy and cold weather conditions. Thus, the KUZEYMAK solar water heater system can be used during the whole year.
Flat-Type solar collectors don’t have vacuum property, the heat losses are really higher than vacuum tube solar systems in cold weather conditions. Heat losses reduce the thermal efficiency sharply and
prevent the usage of the solar water heater system the whole year.

There is no need to add antifreeze to KUZEYMAK solar water heaters with evacuated tubes. The solar water heater system can run regularly and produce hot water
even at -40 °C and under suitable weather conditions.
The flat-type solar collectors need antifreeze because of the risk of freezing. Although adding antifreeze to the flat-type solar collectors, these collectors can’t run efficiently under 0 °C.

All the metal sections of the KUZEYMAK solar water heater systems made of stainless steel (Chrome-Nickel). Due to this material property, the hot water in the water
tank of the system is drinkable; this depends on the drinkable property of the main water.
As a result of the materials used on production of flat-type collectors, some problems such as rust, calcification and obstruction may occur. Also the water produced in the flat-type collectors is not
suitable for drinking.

The polyurethane insulation material which has a very low heat transfer coefficient and 55 mm in thickness is used in hot water tanks of KUZEYMAK solar water heater
systems, thus the temperature of hot water can be protected for a long time, also at cold weather conditions.
Glass wool is generally used as insulation material for the hot water tanks in flat-type solar collectors. The insulation property of glass wool is lower than polyurethane.

Cylindrical vacuum tubes of KUZEYMAK solar water heater systems get sunshine vertically during the whole day. Through the tubes special surface coating, the
reflection ratio can be minimized.
The flat-type solar collectors can get the sunshine vertically only at midday, this property prevents to be effective of the solar system.
WORKING PRINCIPLE of Non-Pressurized Solar Water Heaters with Evacuated Tubes

There is no need any power supply to run this type of solar water heaters. When the cold water is heated by solar radiation in vacuum tubes,
the density of water decreases. The heated water moves through above into hot water tank. However, the density of heated and rising water isn’t
higher than the hot water in the water tank. So, the heated water stays below of the hot water tank and relocates hotter water above the
water tank. This principle is called natural circulation. Non-pressurized solar water heaters work by this natural circulation principle.

Additionally, when the solar water heater system is installed on the roof, the natural pressure of water supplies Cold Water Input (1/2")

the necessary boosting pressure to hot water main. Ventilation (3/4")

Polyurethane (55mm)
Cold Water Input (1/2")
Hot Water Tank (Stainless Steel)

Bleed Pipe Input of Cold Water Feed

to Water Tank (3/4")
Polyurethane (35mm) Cr - Ni Ball of Small Tank
Inner Tank (Stainless Steel)

Polyurethane (55mm)
Ventilation (3/4") Supporter
Black Joint

Vacuum Tube Made of Glass

Cold Water Feed to
Water Tank (3/4")
420
310

Standparts
Electrical Resistance (1 1/4")

Hot Water Output (3/4")

Glass Vacuum Tubes

Vacuum Tube Mount

Silicon Joint
(Resistant up to 300 °C down from -60 °C)
KM 18-100 F430 GT

GUARANTEE PERIOD 2 YEARS

KM 18-100 F430 GT
NUMBER OF TUBES 18
DIMENSION OF TUBES (mm) Ø47x1800
B

D
HOT WATER TANK CAPACITY (L) 100
HOT WATER TANK INNER MATERIAL Stainless Steel (Cr-Ni) (304 2B)
E
HOT WATER TANK OUTER MATERIAL Stainless Steel (Cr-Ni) (430)
ABSORBANT AREA (m2 ) 1.6

C DIMENSION (mm)
A

A 1265 B 1410 C 1500 D 420 E 1830

KM 24-150 F304 GT

ICW 24

CW 24

GUARANTEE PERIOD 4 YEARS

KM 24-150 F304
NUMBER OF TUBES 24
DIMENSION OF TUBES (mm) Ø47x1800
B

D
HOT WATER TANK CAPACITY (L) 150
HOT WATER TANK INNER MATERIAL Stainless Steel (Cr-Ni) (304 2B)
E
HOT WATER TANK OUTER MATERIAL Stainless Steel (Cr-Ni) (304 BA)
ABSORBANT AREA (m2 ) 2.4

C DIMENSION (mm)
A

A 1675 B 1830 C 1500 D 420 E 1830

KM 24-150 F430
GT

ICW 24

CW 24

GUARANTEE PERIOD 2 YEARS

KM 24-150 F430
NUMBER OF TUBES 24
DIMENSION OF TUBES (mm) Ø47x1800
B

D
HOT WATER TANK CAPACITY (L) 150
HOT WATER TANK INNER MATERIAL Stainless Steel (Cr-Ni) (304 2B)
E
HOT WATER TANK OUTER MATERIAL Stainless Steel (Cr-Ni) (430)
ABSORBANT AREA (m2 ) 2.4

C DIMENSION (mm)
A

A 1675 B 1830 C 1500 D 420 E 1830

KM 24-150 S GT

ICW 24

CW 24

GUARANTEE PERIOD 2 YEARS

KM 24-150 S
NUMBER OF TUBES 24
DIMENSION OF TUBES (mm) Ø47x1800
B

D
HOT WATER TANK CAPACITY (L) 150
HOT WATER TANK INNER MATERIAL Stainless Steel (Cr-Ni) (304 2B)
E
HOT WATER TANK OUTER MATERIAL Galvanized Steel Couted FT
ABSORBANT AREA (m2 ) 2.4

C DIMENSION (mm)
A

A 1675 B 1830 C 1500 D 420 E 1830

KM 30-200 F304 GT
ICW 30

ICW 24

CW 30

CW 24

GUARANTEE PERIOD 4 YEARS

KM 30-200 F304
NUMBER OF TUBES 30
DIMENSION OF TUBES (mm) Ø47x1800
B

D
HOT WATER TANK CAPACITY (L) 200
HOT WATER TANK INNER MATERIAL Stainless Steel (Cr-Ni) (304 2B)
E
HOT WATER TANK OUTER MATERIAL Stainless Steel (Cr-Ni) (304 BA)
ABSORBANT AREA (m2 ) 3

C DIMENSION (mm)
A

A 1675 B 2250 C 1500 D 420 E 1830

KM 30-200 F430
ICW 30 GT

ICW 24

CW 30

CW 24

GUARANTEE PERIOD 2 YEARS

KM 30-200 F430
NUMBER OF TUBES 30
DIMENSION OF TUBES (mm) Ø47x1800
B

D
HOT WATER TANK CAPACITY (L) 200
HOT WATER TANK INNER MATERIAL Stainless Steel (Cr-Ni) (304 2B)
E
HOT WATER TANK OUTER MATERIAL Stainless Steel (Cr-Ni) (430)
ABSORBANT AREA (m2 ) 3

C DIMENSION (mm)
A

A 1675 B 2250 C 1500 D 420 E 1830

KM 30-200 S GT
ICW 30

ICW 24

CW 30

CW 24

GUARANTEE PERIOD 2 YEARS

KM 30-200 S
NUMBER OF TUBES 30
DIMENSION OF TUBES (mm) Ø47x1800
B

D
HOT WATER TANK CAPACITY (L) 200
HOT WATER TANK INNER MATERIAL Stainless Steel (Cr-Ni) (304 2B)
E
HOT WATER TANK OUTER MATERIAL Galvanized Steel Couted FT
ABSORBANT AREA (m2 ) 3

C DIMENSION (mm)
A

A 1675 B 2250 C 1500 D 420 E 1830

KM 36-240 F430 GT
ICW 30

ICW 24

CW 30

CW 24

GUARANTEE PERIOD 2 YEARS

KM 36-240 F430
NUMBER OF TUBES 36
DIMENSION OF TUBES (mm) Ø47x1800
B

D
HOT WATER TANK CAPACITY (L) 240
HOT WATER TANK INNER MATERIAL Stainless Steel (Cr-Ni) (304 2B)
E
HOT WATER TANK OUTER MATERIAL Stainless Steel (Cr-Ni) (430)
ABSORBANT AREA (m2 ) 3.6

C DIMENSION (mm)
A

A 1675 B 2545 C 1500 D 420 E 1830

WORKING PRINCIPLE of Pressurized Solar Water Heaters with Evacuated Tubes

The difference between the non-pressurized and pressurized solar water heaters is the presence of serpentine in the hot water tank for the
pressurized systems. The mains water is circulated in the serpentine, so the heat transfer occurs between the mains water and hot water in the
water tank. The serpentine diameter is 16 mm and made of stainless steel.

When the installation of solar water heater is completed, to prevent the pressure variation, pressure reducer is used
with this type of solar water heaters. The cause of preferability of pressurized systems is the insufficient pressure
Cold Water Input (1/2")
of non-pressurized solar water heaters for some applications. With this systems, the necessary pressure Ventilation (3/4")
is supplied for the hot water usage. Cold Water Input (1/2")
Polyurethane (55mm) Inner Tank (Stainless Steel)
Hot Water Tank (Stainless Steel)

Bleed Pipe
Input of Cold Water Feed
to Water Tank (3/4")
Polyurethane (35mm) Cr - Ni Ball of Small Tank Serpentine

Polyurethane (55mm)
Ventilation (3/4") Supporter
Black Joint

Vacuum Tube Made of Glass

Cold Water Feed to
Water Tank (3/4")
420
310

Pressure Reducer

Serpentine
Standparts

Electrical Resistance (1 1/4") Hot Water Output (1/2") Cold Water Feed to
Serpentine (1/2”)
Optional Output
for Open Type System
Glass Vacuum Tubes

Vacuum Tube Mount

Silicon Joint
(Resistant up to 300 °C down from -60 °C)
 GUARANTEE PERIOD 2 YEARS
KM 24-150 SBA GT KM 30-200 SBA GT
NUMBER OF TUBES 24 30
PRESSURIZED SOLAR WATER HEATERS DIMENSION OF TUBES (mm) Ø47x1800 Ø47x1800
HOT WATER TANK CAPACITY (L) 150 200
HOT WATER TANK INNER MATERIAL Stainles Steel (Cr-Ni) (316 2B) Stainles Steel (Cr-Ni) (316 2B)
HOT WATER TANK OUTER MATERIAL Galvanized Steel Couted FT Galvanized Steel Couted FT
ABSORBANT AREA (m2 ) 2.4 3
DIMENSION (mm)
B

D A 1675 A 1675
B 1830 B 2250
E
C 1500 C 1500
D 420 D 420
E 1830 E 1830
C
A

KM 30-200 SBA GT

KM 24-150 SBA GT
WORKING PRINCIPLE of Heat Pipes and Heat Pipe Solar Collectors

The heat pipe is hollow with the space inside evacuated tube. In this type of solar water heater, the insulation is not the goal, but rather to alter the
state of the liquid inside. Inside the heat pipe is a small quantity of purified water and some special additives. At sea level water boils at 100 °C, but
at the top of a mountain the boiling temperature will be less that 100 °C. This is due to the difference in air pressure. Based on this principle, it can
be achieved by evacuating the heat pipe. So, when the heat pipe is heated above lower temperatures than 100 °C, the water vaporizes. This
vapour rapidly rises to the top of the heat pipe transferring heat. As the heat is lost at the condenser (top of the heat pipe), the vapour condenses
to form a liquid (water) and returns to the bottom of the heat pipe to repeat the process once again.

Manifold
Serial Connection of Panels

Hot Water
Output
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Standparts
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Evacuated GlassTube with Heat Pipe

This type of solar water heaters work as integrated with an additional boiler, pump,
automation equipment and expansion tank. Many heat pipe solar water heaters
can be connected to each other as serial according to required hot water capacity.
HEAT PIPE SOLAR COLLECTORS

KMPT 30 BA

GUARANTEE PERIOD 2 YEARS

KMPT 30 BA
NUMBER OF TUBES 30
DIMENSION OF TUBES (mm) Ø58x1800
B

D
HOT WATER TANK CAPACITY (L) According to Required Capacity
MANIFOLD MATERIAL Aluminium
E
MANIFOLD CONTENTS Copper Header (Inside Manifold)
ABSORBANT AREA (m2 ) 3

C DIMENSION (mm)
A

A 2180 B 2290 C 1350 D 150 E 1550

“Enjoy your shower fully,
we deal with the hot water.”
WORKING PRINCIPLE of Ecoboiler

Kuzeymak Ecoboiler is used for heating the domestic water and space in buildings
and apartments that have central heating installation. The 90 °C water from
the central heating system to ecoboiler, circuits between inner and outer tank of
ecoboiler and heats the usage water feeded from the main network. Heated water
exits from the hot water output to be used. Kuzeymak Ecoboilers also heat the space,
because there isn’t any insulation material between inner and outer tanks.
input water 90 °C from
central heating system Besides central heating systems and renewable energy resources it is a practical and
economical solution that also has electrical heating option. For some models of
Kuzeymak Ecoboilers, there are temperature indicator and assembly point option for
electrical resistance application. Electrical Ecoboilers can also be used with the
installation systems without central heating system as instant water heater. For this
type of application, the input and output of the central heating system should be
closed by plugs.

return water 70 °C to
central heating system
A safety valve with 3 bars should be installed at the cold water input to prevent an
resistance explosion that may be caused pressure increase in the Ecoboiler.

hot water output cold water input

ECOBOILER
S

FE

SE

GUARANTEE PERIOD 2 YEARS

EKOBOYLER F
A TYPE S - F SE - FE (Resistance)
HOT WATER CAPACITY (L) 65 65
MAX. WORKING PRESSURE (bar) 4 4
QUALITY CONTROL TEST PRESSURE (bar) 8 8
C B WEIGTH (kg) 29 29
RESISTANCE (W) - 2000
INPUT - OUTPUT CONNECTION (Ø) 1/ " 1/ "
2 2

RESISTANCE CONNECTION (Ø) 1 1/4" 1 1/4"

DIMENSION (mm)

A Ø300 B 790 C 610

PROPERTIES of TUBULAR SOLID FUEL BOILERS with ECONOMISER HOST SYSTEMS

Autonomous Combustible Feed KSK 3S

Suitable solid fuels are coal, walnut coal and pirina.

Manuel Feed KSK 3F

Suitable solid fuels are coal, walnut coal, pirina, wood and any other non-standard fuels that is environment friendly.

- Kuzeymak Solid Fuel Boilers are pressure-resistant and non-deformable.

- Sophisticated design for high efficiency independent from solid fuel type.
- Monoblock economizer steel body.
- Boilers capacity are in the range of 25.000 kcal/h and 900.000 kcal/h.
- Three to five pass flue circulation.
- High quality control standards; under the condition of 5 bar pressure and 100% hydraulic testing.
- Modern and aesthetic appearance; the external body casing produced high quality sheet.
- Insulation with Aluminium foil and 5 cm glass wool in thickness.
- Combustion safety; 50-90 °C automatic control and 100 °C temperature limit by a thermostat for manual reset.
- Auto switch-off in case of no fuel.
- Digital control panel for autonomous operation.
- Adjustable flame through exhaust fan speed modulation for high efficiency and environmental sensitivity.
- Kuzeymak boilers also provide capability to get hot water from the system by installing hot water cylinders.
- The boilers include pumps with capacity between 25.000 kcal/h and 60.000 kcal/h.
TUBULAR SOLID FUEL BOILERS with ECONOMISER HOST SYSTEMS
AUTONOMOUS COMBUSTIBLE FEED KSK 3S

Brand KUZEYMAK

Model KSK 3S
Types KSK 3S 25 KSK 3S 40 KSK 3S 60 KSK 3S 80 KSK 3S 100
Capacity (Coal 7500 kcal/kg) kW 29 47 70 93 116
kcal/h 25.000 40.000 60.000 80.000 100.000
Weight (Net) kg 283 312 364 398 443
Water Volume L 110 131 171 189 211
Flue Draft Pa 25-28 27-30 29-33 30-34 32-37
mbar 0,25-0,28 0,27-0,30 0,29-0,33 0,30-0,34 0,32-0,37
Temperature Setting Range °C 50-90
Max. Temperature °C 100
Min. Return Water Temperature °C 50 (Recommended)
Safety System Engagement Temperature °C 90
Max.Operating Pressure bar 3
Test Pressure bar 4,3
Round Trip R 1" 1¼ 1½ 2" 2½
Expansion Tank Round Trip R ¾ 1" 1" 1¼ 1¼
Input Mouth Diameter R ½ ½ ½ ¾ ¾
Fuel Tank Capacity Lt 148 148 167 198 198
Fuel Tank Capacity (Coal) kg 106 106 120 142 142
(H) mm 1310 1310 1310 1420 1420
(B) mm 620 620 620 760 760
(B1) mm 410 410 420 500 500
External Dimensions
(L) mm 780 830 880 940 1140
(L1) mm 620 670 820 860 960
(H1) mm 1020 1020 1020 1080 1080
D mm
Flue Diameter (D) mm 140 160 160 200 200
Power Supply V/Hz 230/50
Power Consumption W 400 400 600 600 600
Pump Not Included
TUBULAR SOLID FUEL BOILERS with ECONOMISER HOST SYSTEMS
MANUAL FEED KSK 3F

Brand KUZEYMAK

Model KSK 3F
Types KSK 3F 25 KSK 3F 40 KSK 3F 60 KSK 3F 80 KSK 3F 100
Capacity (Coal 7500 kcal/kg) kW 29 47 70 93 116
kcal/h 25.000 40.000 60.000 80.000 100.000
Weight (Net) kg 283 312 364 398 443
Water Volume L 110 131 171 189 211
Flue Draft Pa 25-28 27-30 29-33 30-34 32-37
mbar 0,25-0,28 0,27-0,30 0,29-0,33 0,30-0,34 0,32-0,37
Temperature Setting Range °C 50-90
Max. Temperature °C 100
Min. Return Water Temperature °C 50 (Recommended)
Safety System Engagement Temperature °C 90
Max.Operating Pressure bar 3
Test Pressure bar 4,3
Round Trip R 1" 1¼ 1½ 2" 2½
Expansion Tank Round Trip R ¾ 1" 1" 1¼ 1¼
Input Mouth Diameter R ½ ½ ½ ¾ ¾
(H) mm 1310 1310 1310 1420 1420
(B) mm 620 620 620 760 760
External Dimensions (L) mm 780 830 880 940 1140
(L1) mm 620 670 820 860 960
(H1) mm 1020 1020 1020 1080 1080
Flue Diameter (D) mm 140 160 160 200 200
Power Supply V/Hz 230/50
Power Consumption W 400 400 600 600 600
Pump Not Included
CERTIFICATES
 As long as The Sun Rises...

Solar Water Heaters With Evacuated Tubes

KUZEYMAK İŞ MERKEZİ Portakal Mah.

80023 Sk. No:2 Toroslar / MERSİN TÜRKİYE
Tel: +90 444 44 88 Fax: +90 324 321 16 50
kuzeymak@kuzeymak.com
www.kuzeymak.com