8
13
12
11
10
9
8
7
6
5
4
3
2
1
14
15
16
17
18
19
20
21
22
1.5
MAIN COMPONENTS
Fig. 3
1.4
FUNCTIONAL DIAGRAM
Fig. 2
LEGEND
1 Fan
2 Air/gas mixer
3 Primary exchanger
4 Gas valve
5 40 litre hot water tank
6 Heating probe (SM)
7 100°C safety thermostat
8 Air bleed valve
9 Heating system circulator
10 Hot
water
circulator
11 Heating expansion tank
12 Hot water safety valve
13 Heating system safety valve
14 Boiler
drain
15 Water
pressure
transducer
16 Automatic
bypass
17 Hot water expansion tank
18 Gas
cock
19 Heating system return cock
20 Heating system delivery cock
22 Hot water tank drain cock
23 Hot water probe (SB)
24 Limit thermostat 85°C
25 Magnesium anode
26 Assembly template (optional)
27 Tundish
28 One-way valve
29 Condensation drain trap
30 Flow switch
31 Air bleed valve
36 Pressure reducing valve
37 Single check valve
38 Expansion relief valve
39 Tundish expansion relief valve
40 Filling loop (optional)
LEGEND
1 Control
panel
2 Heating system circulator
3 Hot
water
circulator
4 One-way
valve
5 Heating system safety valve
6 Water
pressure
transducer
7 Positive
pressure
intake
8 Fan
9 Detection
electrode
10 Primary
exchanger
11 Ignition
electrode
12 Ignition
transformer
13 Flue gas thermostat
14 Automatic
bleed
15 85°C limit thermostat
16 40 litre hot water tank
17 Hot water safety valve
18 Heating expansion tank
19 100°C
safety
thermostat
20 Condensation drain trap
21 Heating probe (SM)
22 Flow switch
