1.5
MAIN COMPONENTS
"BF" model
"BFT" model
KEY
1 Control panel
2 D.H.W. exchanger
3 Gas valve
4 Gas rate adjuster
5 Positive pressure take-off
6 Breather valve
8 Sensing electrode
9 Water-gas exchanger
10 Limit stat
11 Ignition electrode
12 Fan
13 Negative pressure take-off
14 Gas pressure take-off
15 Automatic breather
16 100°C safety stat
17 C.H. sensor (SM)
18 Circulating pump
19 Aqua Guard
KEY
1 Control panel
2 Motor-operated diverter valve
3 Gas valve
4 Gas rate adjuster
5 Positive pressure take-off
6 Breather valve
8 Sensing electrode
9 Water-gas exchanger
10 Limit stat
11 Ignition electrode
12 Fan
13 Negative pressure take-off
14 Gas pressure take-off
15 Automatic breather
16 100°C safety stat
17 C.H. sensor (SM)
18 Circulating pump
19 Ignition transformer
Fig. 3
97