The Baxi 600 Combi 2 is compact, simple to use and comes with a seven-year parts and labour warranty*.
The Easy-Fill permanent filling link makes it easy when you need to top up the pressure, without having to call out an engineer. It is compatible with the Baxi uSense smart control that can be operated using a smart phone or tablet.
*Terms and conditions apply
Seven-year parts and labour warranty* for peace of mind
EasyFill makes it easy to top up the central heating system pressure without having to call an engineer
Compatible with Baxi uSense smart thermostat, so you can control it using an app on your phone
Pre-heated condensate trap to prevent freezing in winter - less risk of frozen condensate pipes
Works with natural gas or LPG, without a conversion kit
*Terms and conditions apply
| Technical Specifications | Baxi 624 Combi 2 | Baxi 630 Combi 2 | Baxi 636 Combi 2 | |
| Sales Code | 7796586 | 7796587 | 7796588 | |
| Gas | ||||
| Natural gas or LPG | Yes | Yes | Yes | |
| Inlet supply pressure (natural gas) | mbar (nominal) | 20 | 20 | 20 |
| Maximum Gas Rate (G20) Omax | m³ / hr | 2.61 | 3.26 | 3.9 |
| Heat Input CH | kW (max) Gross (OnHs) | 20.6 | 25.7 | 25.7 |
| kW (min) Gross (OnHs) | 4.9 | 6.0 | 7.2 | |
| Heat Output CH (non-condensing) | kW (Max) (Pn) | 20 | 25 | 25 |
| kW (Min) (Pn) | 4.8 | 5.8 | 7.2 | |
| Heat Output CH (condensing) | kW (Max) (Pnc) | 21.8 | 27.1 | 27.1 |
| kW (Min) (Pnc) | 5.2 | 6.3 | 7.6 | |
| Heat Input domestic hot water (DHW) | kW max gross (OnwHs) | 27.4 | 30.9 | 36.9 |
| Heat Output domestic hot water (DHW) | kW max | 24 | 30 | 36 |
| Water heating efficiency class | A | A | A | |
| Electrical | ||||
| Permanent live required | Yes | Yes | Yes | |
| External fuse rating (on connection board) | Amps | F0.5A L250VP | F0.5A L250VP | F0.5A L250VP |
| Pump overrun | Yes | Yes | Yes | |
| Integral 'boiler only' frost thermostat | Yes | Yes | Yes | |
| Hydraulic | ||||
| Maximum DHW flow rate (Delta T @35'C rise) | l/min | 10.2 | 12.2 | 15.0 |
| Minimum DHW flow rate required | l/min | 2 | 2 | 2 |
| Minimum operating DHW pressure required | bar | 0.5 | 0.5 | 0.5 |
| Integral expansion vessel | Size (litres) | 7 | 7 | 7 |
| Maximum capacity of the CH system | Litres | 100 | 100 | 100 |
| Integral automatic bypass | Yes | Yes | Yes | |
| Weights |
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| Installer Lift Weight | (kg) | 28 | 29 | 30 |
We show you how to find out how old your boiler is from its serial number.
Read how to reset your boiler, whether it has a dedicated reset button, an ON/OFF/SELECTOR switch or a thermostat control knob.
We explain how to use your boiler controls and what temperature they should be set at.
Read full FAQIt is quite simple to top up the water pressure in your boiler. You should be able to do it yourself without having to call a heating engineer. Watch our video to find out how.
If you've got a Baxi uSense smart control, we tell you how to operate it from your smart phone using the new My Baxi app.
Read full FAQ
