7215845 - 01 (08/14) MainEco Heat 19
Description of the Product 4
4.3 Main Components
1. Heat Exchanger
2. Combustion Control Unit
3. Condensate Trap
4. Exhaust Tube
5. Inlet Silencer
6. User Interaction Controller
7. Gas Cock
8. Air Pressure Switch (21 & 24 model only)
9. System Drain Cock
10. Air Vent
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