Ravelli HR EVO 170 Manuel D'installation, D'utilisation Et D'entretien page 67

Rev.1 16/03/2018
ENG
Pag.67
Impianto con acqua calda con scambiatore rapido
1
1
A. DELIVERY Heating male 1"
B. RETURN Heating male 1"
C. DHW DELIVERY male 3/4"
D. DHW RETURN male 3/4"
E. Reintegration (max 2 bar)
F. Safety Exhaust (3 bar)
G. Emptying the plant
1. Boiler
2. Circulating pump
3. Circuit/heating chamber air vent
4. Pressure relief valve P max 3 bar
5. Expansion vessel (preload 1 bar)
use and maintenance manual
HR EVO 170 - 250
4
3
6
12
P
5
2
9
9
G
13
F
4
F
8
8
11
6. DHW pump
7. Automatic thermostatic valve
8. Non-return valve
9. Shutoff valve/cock
10. Control system
11. Drain cock
12. Plate heat exchanger for DHW
13. Pressure relief valve P max 6 bar
T Water temperature sensor
P Circuit pressure sensor
F Flow switch
A
C
B
9
7
9
E
9
G