EAN:
Part number:
Item no:
Technical specifications
- Material heat exchanger: Stainless steel
- Material quality: Steel sheet
- Closed version: Yes
- Operation as open (air supply) version possible: No.
- Boiler system: Flame pipe
- Nominal power 80-60 °C: 23.5 kW
- Nominal power 50-30 °C: 25.2 kW
- Nominal load upper value: 25.3 kW
- Rated load lower value: 16.6 kW
- Adjustable heating power: No.
- Electronic ignition: Yes
- Medium: water.
- Suitable for natural gas: No.
- Suitable for propane: No.
- Suitable for butane: No.
- Suitable for methane: No.
- For class II fuel oil: Yes
- For class I fuel oil: Yes
- Burner control high/low: No.
- Modulating burner regulation: Yes
- Max. Cycle temperature (working temperature): -85°C.
- Max. Permissible operating pressure: 3 bar
- Min Operating pressure 0.3 bar
- Max. Gas footprint 25 mbar
- Water-sided resistance at DT 20 °C: 1 kPa
- Built-in filling/emptying tap: Yes
- Built-in pump circuit: Yes
- Built-in train interruption: No.
- In-built circulation pump: No.
- In-built pressure gauge: No.
- In-built weather-dependent controller: No.
- Built-in expansion tank: No.
- Built-in relief valve: No.
- Height: 1272 mm
- Width 570 mm
- Depth: 700 mm
- Outflow connection: Internal thread
- Pipe outer diameter of inlet: 59.614 mm
- Rewind connection: Internal thread
- Pipe outer diameter Return: 59.614 mm
- Fuel connection: External thread
- Pipe outer diameter of fuel: 20995 mm
- Connection air supply: Insert
- Nominal diameter duct air supply: 125 mm
- Smoke extraction connection: Insert
- Nominal diameter channel flue gas discharge: 80 mm
- Condensate connector: Other
- Pipe outer diameter condensate:21 mm
- Energy efficiency Hot water: 98%
- Energy efficiency class: A
- Heat dissipation at nominal heat discharge in operation at high temperature (P4): 23.5 kW
- Efficiency at high temperature (n4) nominal heat emission: 91.2%
- Additional power consumption at full load (elmax): 0.17 kW
- Additional power consumption in standby mode (PSB): 0.006 kW
- Operating voltage
0 V
25.3 kW
- Heater features
Web-enabled
- Dim
(L x W x H) 570 x 570.00 x 1272.00 mm
- Weight
140 kg
- Height
1272.00 mm
- Length
570 mm
- Depth
700.00 mm
- Width
570.00 mm
- Material
Non-corrosive steel
- Nominal voltage
0 V
- UKCA
not relevant
Documents & Downloads
User & Safety Instructions
User & Safety Instructions 3148761 Vaillant VKO 256 Oil heater VKO 256
Description
IcoVIT exclusively VKO 256/3-7 Oil condensing boiler Product advantages, efficient, low noise blue burner technology, suitable for fuel oil EL low sulfur and heating oil EL standard and 20% FAME, innovative stainless steel plain-pipe heat exchanger, compact housing design, large water content equipment, stainless steel condensing boiler with smoke gas feed in the counter-current principle, 2-stage low noise silencer, low-noise prepared for connection of the sys- certified Vaillant air/exhaust pipes, DIA system with clear text display, illuminated, CO2 Adjustment via display Nominal power range 140 Grd.C 99/25.3 kW 80/60 Grd.C 15.7/23.5 kW Heating power in WW mode 23.5 kW Standard usage degree 1 % (HS) / 105 % (Hi) Supply temperature max. 85 Grd.C Supply/return connection Rp 85 Oil hose connection R 570/700 Air/exhaust connection 80/125 mm Height/width/depth 1272/1/2 mm Weight 40/30 kg Water content 16.9 l CE PIN CE-0085CL0499 Seasonal Energy Efficiency Class A (Spectrum A+++ to D)
This text is machine translated.
This text is machine translated.