Riello Array AR 399 SE - 2 PRODUCT DESCRIPTION; 2.8 System layout

10
PRODUCT DESCRIPTION
2.8 System layout
Array AR SE
1 Flow-meter
2 Air pressure switch
3 Flue gas pressure switch
4 Minimum Water Pressure Switch (set to 7 psi/0.5 bar)
5 Flue gas exhaust connection
6 Gas valve
7 Gas pressure switch 2,5 mbar (only for ARRAY AR 500 SE)
8 Return temperature sensor
9 Pump
10 Relief valve
11 Gas pressure switch 8 mbar (only for ARRAY AR 500 SE)
12 Fan
13 Ignition
14 Combustion chamber
15 Casing
16 Leg
17 Thermomanometer
18 Purge valve
19 LWCO probe
20 Safety Water High-limit Thermostat
21 Supply temperature sensor
22 Detection electrode
23 Flue sensor
5
1
22
3 6
2
7
23
10
11
13
14
16
15
9
84
20
19
12
21
18
17
Fig. 3 System layout