UKY Series Boilers
Product Code: ÜKY

ÜNMAK ÜKY three-pass heating boilers produced with superior technology comply with EN 303-5 Standard. The special cast grill design makes it suitable for burning any type of domestic and foreign lignite and ensures complete combustion.

It is designed to burn solid fuel, which is known as walnut coal or orange coal in the market.

It provides ease of use with its wide covers that allow easy loading in manual fuel loading.

It has a compact structure with its prismatic body, making it easy to be mounted in narrow spaces.

Thanks to its three-pass structure, it increases the surface of transferring heat energy from smoke to water and reduces emissions.

The heat transfer surface area is increased with the flame smoke pipes, thus the efficiency is increased.

It provides more precise thermostat control with its digital control panel. When it reaches the set temperature, it stops the fan, switches it on again when the temperature drops, and continues heating from where it left off.

Thanks to the fan, it reaches the set temperature faster and provides combustion optimization.

With the option of connecting the room thermostat, it provides the comfort of adjusting the boiler water temperature remotely.

Thanks to the heat insulated body, keeping the temperature emitted from the boiler surface inside saves fuel.

If the outside temperature is high, the boiler can be closed from the control panel. In this case, the burning of fuel is darkened and the burning is postponed after the fan is turned off. When the need for heat arises again, the boiler is opened from the control panel and continues to burn without the need for ignition and reaches the desired temperature in a short time (burning delay can be done up to 24 hours according to the quality of coal).

Thanks to its automatic stop feature, the control panel detects when the fuel runs out; fan and circulation pump stop automatically. This feature saves energy.

Fuel filling, ignition, ash removal and pipe cleaning can be done easily thanks to the easy-to-use large filling, pipe cleaning and ash removal covers.

Its elegant appearance and protection against rusting is provided by covering the body plates coated outside of the boiler with electrostatic powder paint. Boiler surfaces are protected with special wet paint.

Casting grades have been made resistant to high temperatures and their strength has been increased. Thanks to its modular structure, it can be easily installed, disassembled and replaced when necessary.

The ash discharge arm enables the grills to move and after the combustion, the ash is discharged into the ash tray under the grill.

It provides the opportunity to obtain hot water with the addition of hot water storage tank.

  1. 1- Safety Outlet
  2. 2- Chimney
  3. 3- Boiler inlet 
  4. 4- Safety inlet
  5. 5- Ash Box
  6. 6- Ash Discharge cover
  7. 7- Moveable Cast İron Gril
  8. 8- Observing Glass
  9. 9- Protection Cover
  10. 10- Control Board
  11. 11- Water inlet
  12. 12- Filling Cover
  13. 13- Filling/Discharge
  14. 14- Fan
  15. 15- Ash Discharge rod
MODEL  ÜKY 16 25 34 45 60 80 100
Fuel Log Wood - Coal
Heating Power kW 19 29 40 52 70 93 116
kcal/h 16.000 25.000 34.000 45.000 60.000 80.000 100.000
Combustion Chamber Height mm 380 430 540
Combustion Chamber Width mm 300 355 500 585
Combustion Chamber Depth mm 400 480 415 485 650 860 860
Fuel Feeding Cap mm 170x300 170x355 185x500 190x585
Water Volume lt 45 70 80 100 130 200 240
Boiler Weight kg 193 234 270 320 370 475 590
Required Draft in Chimney Pa 15-20 20-30 25-35 30-40
Temperature Control Range C 40-80
Recommended Return Temp. C 40
Max. Operating Pressure bar 3
Test Pressure bar 5
Dimensions a mm 462 515 662 780
b mm 820 890 820 940 1100 1400 1420
c mm 200 250
d mm 1230 1290 1400 1150 1250
e mm 535 605 535 605 765 980
f mm 1200 1260 1350 1450
g mm 522 575 722 840
h mm 1320 1380 1470 1565
Flue Connection Diameter mm 130 180 220
Min-Max Flue Temperature °C 170-210
Boiler Flow - Return Pipes R" 1" 1 1/4" 1 1/2" 2"
Safety Flow - Return Pipes R" 3/4" 1" 1 1/2"
Filling/Discharging Pipes R" 1/2" 3/4"
Electricity Connection V/Hz 230  - 50 

*The right to make changes in dimension is reserved.