21
Water scheme for heating-only system with optional HT or LT circuit
HP
direct circuit
LP
direct circuit
POSSIBLE SY
STEM OPTIONS
1
2
6
5
4
4
5
6
7
3
Fig. 17
1
Heat generator
2
Expansion vessel (indoor also available as an option)
3
System filter
4
System shut-off valve
5
Circulator (230Vac / 50Hz / P<120W)
6
Non-return valve
7
Safety thermostat with contact compatible at low volt-
age and low current
