If the pressure difference is greater than 6 mbar, then the boiler will lock
out. Once the cause of the fault has been remedied, the boiler can be
unlocked by pressing the button for 2 seconds.
4.2.5 Circulating pump
The boiler does not have a built-in pump. A circulating pump can be
installed on the connector of the standard control PCB. This can be an
on/off pump or a modulating pump (with 0 - 10 V control).
The pump settings can be changed.
See
Manual for the control panel.
For more information, see
Analogue output (Ctrl), page 44
4.3
Main components
4.3.1 Main components C 330 ECO
Fig.4
C 330 ECO
AD-0000521-01
2
1
3
4
5
6
7
8
27
40
28
29
30
32
34
31
33
35
36
37
38
39
11
12
14
13
15
16
17
18
19
20
22
24
26
21
23
25
10
9
1
Flow connection
2
Air pressure differential switch
3
Flue gas outlet
4
Return connection
5
Flue gas measuring point
6
Flue gas thermostat (if present)
7
Condensate collector sealant cap
8
Pivoting castor
9
Adjustment bolt
10
Frame
11
Second return connection
12
Heat exchanger insulation kit (if present)
13
Boiler casing
14
Air supply
15
Burner
16
Adapter
17
Ignition/ionisation electrode
18
Heat exchanger
19
Inspection trap
20
Temperature sensor for heat exchanger
21
Return temperature sensor
22
Gas filter
23
Data plate
24
Siphon
25
Transport wheels
26
Adjustment bolt
27
Gas connection
28
Gas pressure measuring point
29
Control panel
30
Installation option for weather-compensated boiler
control
31
Pressure measurement point
32
Flame inspection window
33
Non-return valve
34
Fan
35
Extension piece
36
Venturi
37
Gas valve unit
38
Air supply hose
39
Document holder
40
Ignition transformer
4 Description of the product
20 7600532 - v.11 - 13122018
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