Table of Contents
Advertisement
2.02 Boiler main components
5
28
90
132
49
56
22
82
20
21
114
34
10
14
8
42
84
7
85 44
Fig. 2
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
29
Internal flue exit
32
Central heating pump
34
Central heating flow temperature sensor
36
Automatic air vent valve
6
DOMINA 102 DGT
29
187
43
81
FERROLI
GRUNDFOS
9
136
11
145
62
2.03 Boiler water flow diagram
16
91
27
50
19
26
36
32
C.H.
OUT
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)
81
Ignition electrode
82
Sensor electrode
84
Primary gas valve solenoid
85
Secondary gas valve solenoid
90* Flue outlet test point
91* Air test point
114 Low water pressure cut off switch
132 Flue gas deflector
136 Flow meter
145 Central heating pressure gauge
187 Restrictor
* For use with flue gas analyser
FLUE
OUT
AIR
AIR
IN
IN
D.H.W.
GAS
D.H.W.
OUT
IN
IN
Fig. 3
C.H.
IN
Advertisement
Table of Contents
