31
T1
Non-return valve
Ball valve
Temperature gauge
B
preventer
Pump
Expansion vessel
Thermostat
Safety relief valve
Strainer
Clock
T
T1
T2
T2
°
C
0
20
80
60
40
°
C
0
20
80
60
40
Application diagrams
Recirculation not connected to tank
Recirculation connected to tank