Rotex E-Solar Unit ESU 509 Installation And Maintenance Instructions Manual page 9

Fig. 2-2 Schematic design of the ROTEX E-SolarUnit
FA ROTEX ESU - 07/2008
2 Product description
A Electric heat generator
B Stratified hot water storage tank
C Unpressurised storage tank water
D Hot water zone
E Solar zone
F Heating support zone
G RPS control and pump unit (Solaris accessory)
1 Hot water connection (1" male)
2 Heating connection (1" male)
3 Solaris connection
4 Domestic water heat exchanger (TW-WT)
5 Heat exchanger for storage tank charging (SL-WT)
6 Heat exchanger for solar heating support (HU-WT)
7 Heat exchanger for heating (electric heat
generator with integrated safety temperature
limiting in heat-insulated housing, see
Chapter 7, page 51)
8 Heat insulation sleeve for HU-WT
9 Ready for installation of gravity brakes, not
included in the scope of delivery (165070)
10 Solaris flow layering pipe
11 Circulation pump for heating
12 3-way diverter valve
13 Safety overflow connection to rear (Tr 32x3 male)
14 Top filling connection (alternative: safety overflow
connection to front - Tr 32x3 male)
15 Electronic fill level probe
Safety devices
Gravity brake 16 50 70
9