| 2 | 990683 | Expansion vessel | | |
| 8 | 990658 | Condensate trap (upper) | | |
| 11 | 990695 | O' Ring (condensate trap) | | |
| 12 | 990659 | Condensate trap (lower) | | |
| 13 | 990686 | Temperature probe (C.H.- T335D) + clips (18) | | |
| 14 | 573727 | Drain valve | | |
| 15 | 995903 | Low water pressure switch | | |
| 16 | 990685 | Secondary exchanger | | |
| 18 | 997153 | U clips | | |
| 19 | 997181 | O' Ring (C.H. flow pipe -lower) | | |
| 20 | 990383 | O' Ring (C.H. flow manifold) | | |
| 24 | 997088 | Safety valve (3 bar) | | |
| 25 | 999245 | Pressure gauge | | |
| 26 | 995948 | Flow switch (D.H.W.) | | |
| 28 | 995896 | Pump motor | | |
| 31 | 997147 | Motor (3-way valve) | | |
| 32 | 990692 | Printed circuit board (main) | | |
| 40 | 999600 | Time clock | | |
| 42 | 990693 | Printed circuit board (display) | | |
| 49 | 998516 | Seal (combustion chamber - 10×6 - 5 pieces) | | |
| 57 | 990664 | Flexible pipe (condensate tray - condensate trap) | | |
| 58 | 573520 | Gasket 3/4'' | | |
| 59 | 569390 / 164 225 | Gasket 1/4'' | | |
| 60 | 573825 / 164 261 | O' Ring (secondary exchanger) | | |
| 61 | 995934 | Manifold (D.H.W) | | |
| 62 | 990387 | O' Ring (3081) | | |
| 63 | 998458 | Temperature probe (D.H.W) | | |
| 64 | 990384 | Manifold (C.H.flow) | | |
| 65 | 998077 | O' Ring (C.H. flow manifold - by -pass pipe) | | |
| 67 | 995976 | O' Ring (by -pass pipe - return housing) | | |
| 68 | 990386 | Clip (C.H. flow manifold - by - pass) | | |
| 69 | 998517 | Gasket (pressure gauge - C.H. flow manifold) | | |
| 71 | 990392 | O' Ring (D.H.W. flow switch | | |
| 72 | 990745 | Manifold (cold water inlet) | | |
| 73 | 990393 | O' Ring (C.H. return flange - return manifold) | | |
| 74 | 999473 | By-pass (FUGAS) | | |
| 75 | 990391 | Spring (diverter valve) | | |
| 81 | 990694 | Gasket (fan) | | |
| 82 | 990656 | Injector (L.P.G) | | |
| 82 | 990657 | Injector (N.G) | | |
| 86 | 998680 | Gasket (burner) | | |
| 97 | 990677 | Condensate tray | | |
| 98 | 666497 | Seal (condensate tray) | | |
| 99 | 998769 | Gasket (insulation - ignition/detection electrode) | | |
| 100 | 995964 | Electrode (ignition/detection) | | |
| 103 | 998668 | Burner | | |
| 107 | 998888 | Fan | | |
| 108 | 990689 | Cable (fan) | | |
| 109 | 995983 | Cable (ignition/detection electrode) | | |
| 111 | 573521 / 164 282 | Gasket 3/8" | | |
| 113 | 995865 | Auto air vent | | |
| 115 | 995930 | Actuator (diverter valve) | | |
| 116 | 995910 | Spindle (diverter valve) | | |
| 117 | 990366 | Spindle guide (diverter valve) | | |
| 118 | 990489 | O' Ring (3100 - diverter valve) | | |
| 120 | 990488 | O' Ring (3118 - diverter valve) | | |
| 121 | 990487 | O' Ring (R1×P70 - diverter valve) | | |
| 122 | 996123 | Gasker (pump) | | |
| 124 | 990395 | Return manifold | | |
| 126 | 990378 | O'Ring (3030) | | |
| 130 | 990682 | Gas valve (Sigma 848) | | |
