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58
ENGLISH
Water scheme for HT + LT circuit system and domestic water storage tank (3-way command)
circuito diretto BT
circuito
diretto A
T
1
4
8
9
5
6
7
4
6
4
5
4
4
4
3
2
10
Fig. 22
1
Heat generator
2
Expansion vessel
3
System filter
4
System shut-off valve
5
Circulator (230Vac / 50Hz / P<120W)
6
Non-return valve
7
Safety thermostat with contact even compatible with
low voltage/low current
8
Mixer valve (230VAC/ 50Hz / P<50W / 120sec)
9
LT circuit probe (NTC 12kΩ@25°C
β
3760 or, alterna-
tively,
β
3740)
10
Storage cylinder