Internal view

Key to components
- Aluminium/Silicon WB3 Heat Exchanger
- Pre-mix Fan
- Circulating Pump
- Pressure Gauge
- Gas Valve
- Condensate Syphon
- Automatic Air Vent
- Down Firing Low NOx Burner
- Expansion Vessel Connection
- Drain Point
- Mains Cable Pre-wired to Control Board
- Central Heating Temperature Control
- Domestic Hot Water Temperature Control

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