Internal view

Key to components

1. Aluminium/Silicon WB5 Heat Exchanger
2. Pre-mix Fan
3. Down Firing Low NOx Burner
4. Gas Valve (hidden)
5. Condensate Syphon
6. On/Off Button
7. Central Heating Temperature Control
8. Digital Display
9. Auto Air Vent
10. Drain Point (hidden)
11. Air/Gas Adjustment Screw
12. Expansion Vessel
13. Modulating Pump
14. Plug-in Control (Optional TD200 Text Display shown)
15. Pressure Gauge
16. Domestic Hot Water Temperature Control