1 Flow connection
2 Flue gas outlet
3 Return connection
4 Flue gas collector
1 Gas pressure measuring point
2 Gas supply tube
3 Gas - air connection piece
4 Pressure measurement point
5 Non-return valve
6 Gas filter
7 Gas valve
8 Air box
9 Fan
10 Venturi
11 Air supply hose
1 Display cover
2 Power button
3 Control panel
4 Service connector
5 Control box rear part - for expansion PCBs with wire connections
6 Control box front part - for the control unit and connectivity
expansion PCBs
1 Temperature sensor (external control) immersion tube (½")
2 Air vent (⅛")
3 Safety valve connection (1½")
4 Pressure gauge (½")
5 Flow temperature sensor (M6)
Fig.3
C 640 - back
AD-3001554-01
3
2
1
4
Fig.4
Gas - air unit
AD-3001555-01
1
2
3
4
5
6
7
8
9
10
11
Fig.5
Control box
AD-3001556-01
1
2
3
4
5
6
Fig.6
Flow pipe
AD-3001557-01
1
2
4
3
5
3 Description of the product
7762666 - v.02 - 29092020
C 340 / C 640
13
