| Sales code (boiler only) | | 7714519 | 7714161 |
| Controls and accessories | | | |
| Reset button | | Yes | Yes |
| User adjustable DHW temperature | | Yes | Yes |
| User adjustable CH temperature | | Yes | Yes |
| LED temp/status/fault diagnosis display | | Yes | Yes |
| Gas | | | |
| Natural gas | | Yes | Yes |
| Nominal inlet supply pressure | mbar | 20 | 20 |
| Maximum gas rate | m3/h | 2.71 | 3.26 |
| Propane LPG | | No | No |
| Heat input central heating (CH) | kW Max Gross(QnHs) | 22.86 | 22.86 |
| kW Min Gross(QnHs) | 6.87 | 6.87 |
| Heat output CH non-condensing | kW Max (Pn) | 20.00 | 20.00 |
| kW min (Pn) | 6.20 | 6.20 |
| Heat output CH condensing | kW max (Pnc) | 21.16 | 21.20 |
| kW min (Pnc) | 6.70 | 6.70 |
| Heat input domestic hot water | kW Max Gross (QnwHs) | 25.77 | 30.00 |
| Heat output domestic hot water | kW Max (Pn) | 25.00 | 30.93 |
| ErP product information | | | |
| NOx | class | 6 | 6 |
| Space heating efficiency class | | A | A |
| Water heating declared load profile | | XL | XL |
| Water heating efficiency class | | A | A |
| Seasonal space heating energy efficiency | % | 93 | 93 |
| Electrical | | | |
| Electrical supply | Volts/Hz | 230/50 | 230/50 |
| Permanent live required | | Yes | Yes |
| Fitted electrical cable | | No | No |
| Power consumption | Watts | 68 | 68 |
| External fuse rating | Amps | 3 | 3 |
| Internal fuse rating | Amps | F2AH250V | F2AH250V |
| Ingress protection rating | | IPX5D | IPX5D |
| Integral ‘boiler only’ frost thermostat | | Yes | Yes |
| Mechanical | | | |
| Multifit Pre-Plumb jig (7682545) | | Yes | Yes |
| Isolating valves | | Yes | Yes |
| Gas supply connection | mm | 22 | 22 |
| Central heating connections | mm | 22 | 22 |
| Domestic hot water connections | mm | 15 | 15 |
| Condensate drain connection | mm | 21.50 | 21.50 |
| Safety discharge connection | mm | 15 | 15 |
| Safety discharge pressure | bar | 3 | 3 |
| Temporary rigid filling loop included | | Yes | Yes |
| Hydraulic | | | |
| Domestic hot water output (raised 35°C) (max) | l/min | 10.2 | 12.2 |
| Domestic hot water operating flow rate (min) | l/min | 2* | 2* |
| Domestic hot water operating pressure (min) | bar | 0.5 | 0.5 |
| Domestic hot water system pressure (max) | bar | 8 | 8 |
| CH safety discharge pressure | bar | 3 | 3 |
| Integral automatic bypass | | Yes | Yes |
| Integral expansion vessel capacity | litres | 7 | 7 |
| Max capacity of central heating system | litres | 100 | 100 |
| Compartment ventilation requirement | | No | No |
| CH system inhibitor required | | Yes | Yes |
| 24 hour pump exercise | | Yes | Yes |
| Pump overrun | | Yes | Yes |
| Concentric flue systems | | | |
| Concentric flue diameters | mm | | 60/100 |
| Standard horizontal flue kit length (60/100mm) | mm | 685 | 685 |
| Max equiv length horizontal/vertical (60/100mm) | m | 10 | 10 |
| Equivalent length per 135º bend | m | 0.50 | 0.50 |
| Equivalent length per 93º bend | m | 1.00 | 1.00 |
| Weights | | | |
| Max installation lift weight | kg | 29 | 29 |
| Gross packaged boiler weight | kg | 32 | 32 |