| Gas connection on appliance: |
1/2" |
| Heating system connection, flow/return on appliance: |
3/4" |
| Safety valve discharge pipe connection (minimum): |
15 mm |
| Condensate drain pipe (minimum): |
18.4 mm |
| Flue gas/air duct system connection: |
60/100 mm |
| Gas inlet pressure for natural gas (G20): 2 kPa (20 mbar) |
2 kPa (20 mbar) |
| Maximum flue gas temperature (80 °C / 60 °C): |
89 °C |
| Minimum flue gas temperature (80 °C / 60 °C): |
72 °C |
| Minimum gas volume flow at 15 °C and 1,013 mbar, G20: |
0.44 m³/h |
| Maximum gas volume flow in heating mode at 15 °C and 1,013 mbar, G20: |
2.96 m³/h |
| Maximum gas volume flow in domestic hot water (DHW) mode at 15 °C and 1,013 mbar, G20: |
2.96 m³/h |
| Seasonal efficiency at part load (30%): |
108,20% |
| NOx class: |
6 |
| Weighted NOx emission (Hs), G20: |
32,4 mg/kWh |
| CO emissions: |
131,17 ppm |
| Net weight: |
27.4 kg |
| Power |
|
| Nominal heat output range at P 50/30 °C: |
4,5 ․․․29,6 kW |
| Nominal heat output range at P 60/40 °C: |
4,4 ... 28,7 kW |
| Nominal heat output range at P 75/55 °C: |
4 ... 27,3 kW |
| Maximum domestic hot water heat input (Qmax) (Hi): |
28 kW |
| Flue gas mass flow rate at minimum heating output (P min): |
2 g/s (7,20 kg/h) |
| Flue gas mass flow rate at maximum heating output (P max): |
12,5 g/s (45 kg/h) |
| Nominal heat input range for heating: |
4,2 ... 28 kW |
| Heating |
|
| Maximum heating system temperature: |
75 °C |
| Maximum temperature control range: |
35 ... 75 °C |
| Maximum operating pressure (MWP): |
0.3 MPa (3 bar) |
| Nominal heating water flow rate through the boiler (ΔT = 20 K): |
1,176 l/h |
| Approximate condensate volume at nominal load (pH value between 3.5 and 4) 50/30 °C: |
2.80 l/h |
| Residual pump head (at nominal circulating water flow): |
0.0122 MPa (0.1220 bar) |
| Expansion vessel capacity of heating system: |
8 l |
| Domestic Hot Water (DHW) |
|
| Minimum water flow rate: |
1.7 l/min |
| Specific hot water flow rate D (ΔT = 30 K): |
13,4 l/min |
| Permissible operating pressure: |
0.03 ... 1 MPa (0.30 ... 10 bar) |
| Recommended supply pressure: |
0.03 MPa (3 bar) |
| Hot water outlet temperature range: |
35 ... 55 °C |
| Electrical |
|
| Rated voltage: |
230 V |
| Rated frequency: |
50 Hz |
| Permissible supply voltage: |
195 ... 253 V |
| Built-in fuse (slow-blow): |
T2/2 A, 250 V |
| Maximum power consumption: |
90 W |
| Power consumption in standby mode |
1,7 W |
