7
FALCON
2.03 Boiler water fl ow diagram
OUT
I
MIN
AIR
IN
AIR
IN
FLUE
OUT
C.H.
OUT
D.H.W.
OUT
GAS
IN
D.H.W.
IN
C.H.
IN
Fig. 3
2.02 Boiler main components
Fig. 2
Key
5
Room sealed compartment
7
Gas inlet
8
Domestic hot water outlet
9
Domestic hot water inlet
10
Central heating fl ow 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 fl ue exit
32
Central heating pump
+
-
R
OVER RIDE
12:31
x
x
4
AUTO
P
O
I
P
STEP
STEP
OUT
IN
bar
4
3
2
1
bar
0
OFF
RESET
ON
60
80
50
70
40
°
C
°
C
157 63
98
145 189
190
62
10
14
8
84
7 85 44 9
136
11
32
36
56
26
19
27
43
187
29
5
28
90
132
49
22
82
81
20
21
114
34
42
50
91
16
34
Central heating fl ow
temperature sensor
36
Automatic air vent valve
42
Domestic hot water fl ow
temperature sensor
43
Air pressure switch
44
Gas valve
49
Safety overheat thermostat
50
Central heating fl ow limit thermostat
56
Expansion vessel
62
Time clock
63
Central heating
temperature adjustment
81
Ignition electrode
82
Sensor electrode
84
Primary gas valve solenoid
85
Secondary gas valve solenoid
*90
Flue gas test point
*91
Air test point
98
On/Off/Reset switch
114
Low water pressure cut off switch
132
Flue gas defl ector
136
Flow meter
145
Central heating pressure gauge
157
Domestic hot water temperature
adjustment
187
Flue diaphragm
189
Indication lack of fl ame
190
Indication lighted burner
*
For use with fl ue gas analyser