MODENA 80 E
6
2.03 Boiler water flow diagram
OUT
IN
MIN
AIR
IN
AIR
IN
FLUE
OUT
C.H.
OUT
D.H.W.
OUT
GAS
IN
D.H.W.
IN
C.H.
IN
2.02 Boiler main components
Key
5 Room sealed compartment
7 Gas inlet
8 Domestic hot water outlet
9 Domestic hot water inlet
10 Central heating flow outlet
11 Central heating return inlet
14 Safety valve
16 Fan
19 Combustion chamber
20 Burner assembly
21 Main injector
22 Burner
26 Combustion chamber insulation
27 Copper heat exchanger for central
heating and domestic hot water
28 Flue collector from heat exchanger
32 Central heating pump
34 Central heating flow temperature
sensor
Fig. 2
Fig. 3
43
16
27
50
19
49
28
5
20
21
26
132
90
91
818222
56
IN
OUT
MIN
36
0
5
1
2
3
4
6
98 63 157 14562
10 874 784 85 44
136
114
34
14 42 9 11
32
73
36 Automatic air vent valve
42 Domestic hot water flow
temperature sensor
43 Air pressure switch
44 Gas valve
49 Safety overheat thermostat
50 Central heating flow limit
thermostat
56 Expansion vessel
62 Time clock (option)
63 Central heating temperature
adjustment
81 Ignition electrode
82 Sensor electrode
84 Primary gas valve solenoid
85 Secondary gas valve solenoid
*90 Flue sampling point
*91 Air sampling point
98 On/Off/Reset switch
114 Low water pressure cut off
switch
132 Flue gas deflector
136 Flow meter
145 Central heating pressure gauge
157 Domestic hot water
temperature adjustment
* For use with flue gas analysis
equipment
